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Sample records for anti-mielina na esclerose

  1. Determinação de autoanticorpos para antígenos da mielina no soro de pacientes HLA - DQB1*0602 com esclerose múltipla

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    Carvalho Adriana

    2003-01-01

    Full Text Available Esclerose múltipla (EM é doença inflamatória desmielinizante do sistema nervoso central (SNC de natureza autoimune, mediada por linfócitos Th1. A produção de autoanticorpos séricos para proteína básica da mielina (MBP, proteolipídeo PLP e sequência da glicoproteína de oligodendrócito MOG 92-106, foi determinada em 54 indivíduos saudáveis e 26 pacientes com EM expressando ou não o alelo de suscetibilidade HLA-DQB1*0602. Independentemente da expressão do alelo DQB1*0602, todos os pacientes apresentaram produção marcante (p< 0,0001 de autoanticorpos isotipo IgG para MBP e MOG 92-106, e do isotipo IgA para PLP e MOG 92-106. Os resultados sugerem que outros alelos HLA da classe II exerçam influência na suscetibilidade à EM e no reconhecimento imunológico dos antígenos encefalitogênicos, determinando o padrão de resposta autoimune e contribuindo na manutenção e/ou controle da inflamação no SNC.

  2. Caracterização molecular da mielina do camarão Litopenaeus Vannamei

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    Carvalho, Gabriela de Castro e

    2010-01-01

    Originalmente conceituava-se a mielina como uma inovação evolutiva exclusiva dos vertebrados com mandíbulas, capaz de permitir o aumento na velocidade de transmissão de impulsos nervosos graças à transmissão saltatória. Este conceito tem sido desafiado pela identificação de estruturas morfologicamente equivalentes à mielina em grupos independentes de invertebrados, incluindo anelídeos e crustáceos capazes de garantir propagação de impulsos nervosos em velocidades superiores à de vertebrados. ...

  3. Qualidade de vida e espiritualidade na esclerose múltipla

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    Pereira, Marlene Alexandra Cardoso

    2009-01-01

    Dissertação apresentada à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Psicologia, especialização em Psicologia da Educação e Intervenção Comunitária. A Esclerose Múltipla (EM) consiste numa doença crónica, incapacitante e de carácter imprevisível, sendo que a sua progressão origina problemas físicos, psíquicos e sociais, que têm impacto na Qualidade de Vida (QDV) dos doentes. Paralelamente, a investigação tem mostrado que a Espiritualidade é um...

  4. Intervenção fonoaudiológica na esclerose sistêmica: relato de casos

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    Leylane Fonseca Almeida

    2016-02-01

    Full Text Available RESUMO A Esclerose Sistêmica é uma doença reumática autoimune do tecido conjuntivo, progressiva, pouco frequente, de etiologia desconhecida e com evolução variável. Atinge órgãos nobres e tecidos periorais, causando limitação na abertura da boca, hipertonia dos órgãos fonoarticulatórios, face com "aparência de máscara", dificuldades na mastigação e deglutição. Com o objetivo de comparar os resultados pré e pós-intervenção fonoaudiológica miofuncional orofacial em sujeitos com esclerose sistêmica, realizou-se estudo clínico exploratório qualiquantitativo no setor de Reumatologia do Hospital Universitário e na Clínica escola de Fonoaudiologia da Universidade Federal de Sergipe, no período de julho/2012 a dezembro/2013. A amostra foi composta por cinco indivíduos, de ambos os gêneros, com faixa etária entre 24 e 60 anos e diagnóstico médico confirmado da referida afecção. Os indivíduos passaram por avaliação por meio do protocolo MBGR e 36 sessões de terapia fonoaudiológica (miofuncional e mioterápica. Ao término, os resultados iniciais e finais foram comparados a partir dos indicadores clínicos trabalhados. Diante da análise dos resultados obtidos, foram observadas melhoras em todos os aspectos trabalhados. A avaliação anterior à fonoterapia revelou restrição na abertura da boca em todos os indivíduos e os resultados finais apresentaram ganhos entre 5.3 e 14.2 mm de abertura (média: 9,26 mm. Com relação à tonicidade, mobilidade dos órgãos fonoarticulatórios e dormência orofacial, observaram-se melhoras e evidências de adequação das funções orais. Pode-se concluir que, apesar de alguns pacientes ainda apresentarem alterações, a reabilitação fonoaudiológica promoveu melhoras significativas no quadro clínico e qualidade de vida dos indivíduos do grupo de estudo.

  5. Ressonância magnética na esclerose múltipla: análise de 270 casos

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    Minguetti Guilberto

    2001-01-01

    Full Text Available O autor apresenta 270 casos de pacientes com história clínica e imagens de ressonância magnética compatíveis com esclerose múltipla. São feitas considerações sobre a incidência quanto ao sexo, grupos etários e localização das lesões. Por se tratar de doença considerada rara nos países tropicais, o autor tece considerações didáticas sobre os critérios clínicos e de imagem úteis na prática radiológica e alerta os neurologistas para o significado desta doença na capital (Curitiba de um estado brasileiro (Paraná situado entre os paralelos 22º e 30º Sul.

  6. Auto-anticorpos na Esclerose Sistêmica (ES Autoantibody in the Systemic Sclerosis (SS

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    Luís Eduardo Coelho Andrade

    2004-06-01

    Full Text Available A esclerose sistêmica (ES é uma enfermidade inflamatória crônica idiopática, cujo principal indício de vínculo com a auto-imunidade é a presença de auto-anticorpos na maior parte dos pacientes. Pelo teste de imunofluorescência indireta em células HEp-2, observa-se reatividade predominantemente contra o nucléolo e o núcleo, sendo que títulos de anticorpos antinucléolo acima de 1/640 são fortemente sugestivos de ES. Alguns desses auto-anticorpos apresentam alta especificidade para a ES, sendo considerados marcadores diagnósticos dessa enfermidade. São exemplos os anticorpos anti-Scl-70, antifibrilarina e anti-RNA polimerase I. Outros apresentam interessantes associações com manifestações específicas da ES, como os anticorpos anticentrômero, associados às formas limitadas, os anticorpos anti-RNA polimerase III, associados ao extenso comprometimento da pele, e os anticorpos anti-To/Th, associados às formas limitadas com propensão ao desenvolvimento de hipertensão pulmonar. Algumas dessas associações estão bem estabelecidas em diversos estudos, de diferentes grupos de pesquisadores. Outras, entretanto, devem ser vistas com cautela, pois a exigüidade de casos disponíveis para estudo pode ensejar conclusões preliminares e não acuradas. A detecção de anticorpos anticentrômero por técnica de IFI e anti-Scl-70 por imunodifusão dupla ou por ELISA está disponível nos principais laboratórios clínicos capacitados na área de auto-imunidade. O mesmo não se aplica para a maior parte dos demais auto-anticorpos associados à ES. Espera-se que, com a implementação rotineira de técnicas para detecção desses outros auto-anticorpos, o real significado clínico dos mesmos venha a ser melhor conhecido.Systemic Sclerosis (SS is a chronic idiopathic inflammatory disease whose main hint towards autoimmunity is given by the presence of high serum levels of autoantibodies in the majority of the patients. In indirect

  7. Diplopia como primeiro sintoma de esclerose múltipla

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    Maria Auxiliadora Monteiro Frazão

    2015-04-01

    Full Text Available Objetivo: Determinar a frequência e as características clínicas das alterações da motilidade ocular extrínseca em indivíduos portadores de esclerose múltipla, residentes no estado de São Paulo, em série de casos consecutivos de 1996 a 2011. Métodos: Foram selecionados oitenta e três indivíduos com esclerose múltipla, com idade entre 17 e 59 anos. Todos foram submetidos à anamnese e exame ocular completo. Resultados: Alterações da motilidade ocular extrínseca foram encontradas em 17 ( 20,48% dos 83 indivíduos. A diplopia ocorreu como primeiro sintoma da doença em 11 (13,25% indivíduos. Conclusão: A frequência de diplopia como primeiro sintoma de esclerose múltipla é relevante. Por esse fato, é fundamental ressaltar a importância da difusão do conhecimento desse achado para a realização de diagnóstico precoce de esclerose múltipla, tanto para o oftalmologista geral, como para o médico generalista, melhorando assim o prognóstico dos pacientes que dela padecem.

  8. Lipoproteínas e inflamação na esclerose múltipla

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    Cascais, Maria João Coelho Melo

    2010-01-01

    Preâmbulo Os processos inflamatórios induzem alterações marcadas do metabolismo das lipoproteínas plasmáticas e estas, por sua vez, regulam as reacções imunitárias. Dadas as muitas relações existentes entre imunidade inata e adquirida e o metabolismo das lipoproteínas, investigámos neste trabalho a sua possível relevância para a compreensão da Esclerose Múltipla (EM), uma doença neuroinflamatória e neurodegenrativa do Sistema Nervoso Central (SNC). Como será evidente ao l...

  9. Sistematizacao da Assistencia de Enfermagem para acompanhamento ambulatorial de pacientes com esclerose multipla

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    Nair Assunta Antonia Corso

    2013-06-01

    Full Text Available Relato da experiência de enfermeiros na implementação da sistematização da assistência de enfermagem para acompanhamento ambulatorial em um centro interdisciplinar de atendimento a pacientes com esclerose múltipla de um hospital público de Fortaleza, Ceará. Essa implementação é baseada nas classificações da North American Nursing Diagnosis Association International, Classificação das Intervenções de Enfermagem e Classificação dos Resultados de Enfermagem. Um dos resultados diz respeito à sistematização do cuidado de enfermagem, partindo da identificação e da compreensão das respostas dos pacientes com esclerose múltipla aos problemas de saúde reais e potenciais. A sistematização enseja ampliar os conhecimentos por meio de uma prática pautada em evidências científicas, além de favorecer a atuação do enfermeiro em uma abordagem integral e fomentar outras investigações.

  10. Comprometimento pulmonar na esclerose sistêmica: revisão de casos Pulmonary involvement in systemic sclerosis: cases review

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    Marcel Koenigkam Santos

    2006-06-01

    Full Text Available OBJETIVO: Rever e avaliar os padrões de alterações encontrados em exames de imagem de pacientes com comprometimento pulmonar da esclerose sistêmica. MATERIAIS E MÉTODOS: Foram retrospectivamente estudados os exames de radiografia simples e tomografia computadorizada de alta resolução de 23 pacientes com esclerose sistêmica. RESULTADOS: Na radiografia simples, o padrão reticular em bases pulmonares foi predominante, tendo sido verificado em 18 pacientes (78,2%. A tomografia computadorizada de alta resolução evidenciou lesão pulmonar em todos os pacientes estudados, encontrando-se faveolamento em nove pacientes (39,1%, opacidades em vidro fosco associadas a opacidades reticulares em oito (34,7%, predomínio de opacidades reticulares em cinco (21,7% e vidro fosco em um paciente (4,3%. CONCLUSÃO: O padrão de anormalidades tomográficas possui boa correlação com os achados histopatológicos, diferenciando padrões predominantemente inflamatórios de fibróticos, com os padrões inflamatórios estando associados a uma resposta superior ao tratamento. Dessa maneira, observou-se alteração sugestiva de fibrose na maior parte dos casos (faveolamento e opacidades reticulares somando 60,8%, porém com boa parte apresentando padrões sugestivos de processo inflamatório.OBJECTIVE: To review and evaluate the patterns of imaging examinations findings of lung disease in patients with systemic sclerosis. MATERIALS AND METHODS: Plain x-rays and high-resolution computed tomography studies of 23 patients with systemic sclerosis were retrospectively analyzed. RESULTS: At plain x-rays, pulmonary disease with reticular pattern had higher prevalence, appearing in 18 patients (78.2%. High-resolution computed tomography showed lung involvement in the whole group of patients, with honeycombing in nine patients (39.1%, ground-glass opacities associated with reticular opacities in eight patients (34.7%, predominance of reticular opacities in five (21

  11. Atualização na etiopatogênese da esclerose sistêmica

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    Adriana Fontes Zimmermann

    2013-12-01

    Full Text Available A Esclerose Sistêmica (ES é uma doença autoimune de etiologia multifatorial, desencadeada pela combinação de fatores genéticos e ambientais. Sua variada expressão clínica resulta da complexa interação fisiopatogênica de três elementos principais: a vasculopatia proliferativa, a desregulação imunológica e a deposição e remodelamento anormais da matriz extracelular (MEC, da qual resulta a fibrose característica da doença. Eventos fisiopatogênicos precoces parecem ser a lesão endotelial e o desequilíbrio no reparo vascular, com a ativação de células endoteliais, do sistema imune e das plaquetas, com a liberação de múltiplos mediadores, como as citocinas proinflamatórias TH2 e os fatores de crescimento, desencadeando uma sequência de eventos simultâneos ou em cascata que envolve diversas vias de sinalização intracelular. O resultado mais importante desses eventos é a hiperativação dos fibroblastos, as principais células efetoras da fibrose, as quais passam a produzir grandes quantidades de constituintes da MEC e a secretar múltiplos fatores de crescimento e citocinas que perpetuam o processo. Neste artigo apresentamos uma revisão dos principais fatores potencialmente implicados na etiologia da ES e revisitamos os conhecimentos atuais sobre os mais importantes mecanismos envolvidos no desenvolvimento das lesões características da doença. O melhor entendimento desses mecanismos fisiopatogênicos possibilita identificar potenciais alvos terapêuticos, o que pode resultar em avanços no manejo dessa complexa e debilitante doença.

  12. Concomitância de autoanticorpos na esclerose sistêmica: como interpretar? Autoantibodies coexistence in systemic sclerosis: how to interpret it?

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    Scheila Fritsch

    2012-12-01

    Full Text Available Os autoanticorpos possivelmente influenciam as manifestações clínicas da esclerose sistêmica (ES. Essa correlação clínico-sorológica, associada à insuficiência de casos de concomitância de autoanticorpos, originou o paradigma histórico de que seriam mutuamente excludentes. Porém, pode-se questionar essa tese. Poderia a multiplicidade de autoanticorpos significar a coexistência de duas patologias distintas? Por outro lado, se assumidos como anticorpos específicos de uma doença única, essa multiplicidade seria um evento aleatório ou representaria um subgrupo distinto de pacientes, com características clínicas, patogênicas e imunogenéticas próprias? A prevalência de autoanticorpos na ES precoce é elevada. Entretanto, a duplicidade do anticorpo anticentrômero (AAC e do anticorpo antitopoisomerase 1 (AAT é um evento raro. Já a coexistência de AAC, AAT e anticorpo anti-RNA polimerase (anti-RNA-P III ainda não foi descrita em um paciente isolado. Neste relato, com positividade para AAC, AAT e anti-RNA-P III, notamos manifestações vasculares precoces e posterior comprometimento cutâneo limitado. Este parece ser o primeiro relato de concomitância de três autoanticorpos específicos em um paciente com ES. Acreditamos que essa coexistência representa um subgrupo sorológico raro de uma única doença, com possível valor clínico e prognóstico - porém, ainda há necessidade de confirmação.Autoantibodies possibly influence clinical manifestations of systemic sclerosis (SSc. This clinical-serological correlation, associated with the paucity of autoantibodies concomitance, gave rise to the historical paradigm of autoantibodies mutual exclusivity. However, one can question this assumption. Does autoantibodies concomitance mean coexistence of two different entities? On the other hand, if considered a unique disease, is this phenomenon a random event or does it represent a distinct subgroup of patients, with peculiar

  13. Heterogeneidade neuropsicológica na esclerose múlipla Neuropsychological heterogeneity in multiple sclerosis

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    Eduardo de Paula Lima

    2008-01-01

    Full Text Available A esclerose múltipla (EM é uma doença neurológica progressiva e incapacitante, cujos sintomas afetam o funcionamento motor, sensorial e psicológico. Diversas variáveis clínicas e psicossociais influenciam o perfil neuropsicológico na EM, que é extremamente heterogêneo. O objetivo principal do presente estudo foi investigar a possibilidade de estratificar estatisticamente portadores de EM e controles a partir das dimensões neurológica, sócio-demográfica e neuropsicológica de funcionamento. A partir desse objetivo, foi conduzido um procedimento de análise de conglomerados utilizando cinco instrumentos neuropsicológicos, selecionados dentre uma gama de nove medidas, de acordo com a acurácia diagnóstica. A amostra foi constituída por 45 pessoas saudáveis e 35 portadores de EM com características sócio-demográficas semelhantes. Os resultados indicaram uma solução ideal com quatro conglomerados a partir de duas dimensões, funcionamento "cognitivo" e "psicossocial", que representam aspectos independentes, porém não disjuntivos, do funcionamento neuropsicológico na EM.Multiple sclerosis (MS is a progressively disabling neurological disease which symptoms affect sensory, motor and psychological functioning. Several clinical neurological and psychological variables influence the neuropsychological profile in MS, which is extremely heterogeneous. The main objective of the present study was to investigate if it is possible to statistically stratify control subjects and MS patients from neurological, socio-demographic and neuropsychological dimensions. With this purpose we applied cluster analysis procedures to five neuropsychological instruments selected according to diagnostic accuracy from a pool of 9 neuropsychological tests. The sample was composed of 45 healthy controls and 35 MS patients with similar socio-demographic characteristics. The results indicated an ideal solution with 4 different clusters according to two

  14. Glioma and multiple sclerosis: case report Glioma e esclerose múltipla: relato de caso

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    Lineu Cesar Werneck

    2002-06-01

    Full Text Available We report a case of a 44-years-old woman with relapsing-remitting and secondarily progressive form of multiple sclerosis (MS since aged 24 years, who developed an anaplastic astrocytoma. The neurological manifestations of the tumor were misinterpreted as resulting from MS. Sequential MRI examination and seizures raised the possibility of another nature of her symptoms, besides MS. Her initial good response to high doses corticosteroids led to the initial assumption her symptoms were only exclusively due to the demyelinating process. She underwent craniotomy with radical excision of the lesion. Pathological examination disclosed anaplastic astrocytoma. Other cases of coincidental MS and primary CNS tumors are reviewed, as well as their possible relation.Relatamos o caso de uma paciente de 44 anos, portadora de esclerose múltipla forma surto-remissão e progressiva secundária, que na evolução desenvolveu um astrocitoma anaplásico. Os sintomas do tumor se confundiram com os da esclerose múltipla e com a repetição de ressonâncias magnéticas foi possível suspeitar do diagnóstico. Além dos sinais neurológicos, também apresentava crises convulsivas. A melhora com os cursos de pulsoterapia mascaravam os sintomas do tumor. Submetida a craniotomia e retirado tumor com características histológicas e histoquímicas de astrocitoma anaplásico, ao lado de áreas de desmielinização típicas de esclerose múltipla. São discutidos os aspectos radiológicos, incidência e mecanismos da concomitância das duas doenças.

  15. Esclerose sistêmica progressiva: aspectos na tomografia computadorizada de alta resolução Progressive systemic sclerosis: high-resolution computed tomography findings

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    Emerson L. Gasparetto

    2005-09-01

    Full Text Available OBJETIVO: Descrever os achados de tomografia computadorizada de alta resolução de pacientes com esclerose sistêmica pulmonar, independentemente dos sintomas respiratórios. MATERIAIS E MÉTODOS: Foram revisados 73 exames de tomografia computadorizada de alta resolução de 44 pacientes com diagnóstico de esclerodermia estabelecido através de critérios clínicos e laboratoriais. Os exames foram revisados por dois radiologistas, que estabeleceram os achados por consenso. RESULTADOS: Em 91,8% (n = 67 dos exames observaram-se alterações. Os principais achados foram lesões de padrão reticular (90,4%, opacidades em vidro-fosco (63%, bronquiectasias e bronquiolectasias de tração (56,2%, dilatação esofagiana (46,6%, faveolamento (28,8% e sinais de hipertensão pulmonar (15,6%. Na maioria dos casos as lesões eram bilaterais (89% e simétricas (58,5%. Quanto à localização, houve predomínio de lesões basais (91,2% e periféricas (92,2%. CONCLUSÃO: A esclerose sistêmica progressiva acarreta fibrose pulmonar na maioria dos pacientes, caracterizada principalmente por lesão reticular basal e periférica.OBJECTIVE: To describe the high-resolution computed tomography findings in the lung of patients with systemic sclerosis, independently of the respiratory symptoms. MATERIALS AND METHODS: Seventy-three high-resolution computed tomography scans of 44 patients with clinical diagnosis of systemic sclerosis were reviewed and defined by the consensus of two radiologists. RESULTS: Abnormalities were seen in 91.8% (n = 67 of the scans. The most frequent findings were reticular pattern (90.4%, ground-glass opacities (63%, traction bronchiectasis and bronchiolectasis (56.2%, esophageal dilatation (46.6%, honeycombing pattern (28.8% and signs of pulmonary hypertension (15.6%. In most cases the lesions were bilateral (89% and symmetrical (58.5%. The lesions were predominantly located in the basal (91.2% and peripheral (92.2% regions. CONCLUSION: In

  16. Mesial temporal sclerosis in children Esclerose mesial temporal em crianças

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    Eliana Maria Domingues Brandão

    2007-12-01

    Full Text Available Mesial temporal sclerosis is the most frequent cause of drug-resistant temporal lobe epilepsy but has a satisfactory response to surgery, and is considered infrequent in children. OBJECTIVE: To evaluate the clinical, electrographic and radiological spectrum of the disease in children. METHOD: Retrospective study by review of charts of 44 children with a diagnosis of mesial temporal sclerosis on magnetic resonance imaging, attended at the "Hospital das Clínicas" of the University of São Paulo Faculty of Medicine. RESULTS: Febrile seizure was identified in the history of 54% of the patients. Injuries at the left side predominated in patients with schooling difficulties (p=0.049, in those with the first seizures between six months and five years (p=0.021 and in those with complex febrile seizure (p=0.032. Thirteen patients were submitted to surgery and of these, eight remained without seizures. CONCLUSION: Febrile seizure may be related in a more direct way to the presence of left-side mesial temporal sclerosis.Em adultos, esclerose mesial temporal é a causa mais freqüente de epilepsia do lobo temporal intratável por medicamentos e que responde satisfatoriamente a cirurgia, sendo considerada pouco freqüente em criança. OBJETIVO: Avaliar o espectro clínico, eletrográfico e radiológico desta patologia em crianças. MÉTODO: Estudo retrospectivo, por revisão de prontuário de 44 crianças com diagnóstico de esclerose mesial temporal na ressonância magnética, atendidos no Hospital das Clínicas da Faculdade de Medicina de São Paulo. RESULTADO: Foi identificado que 54% dos pacientes apresentaram antecedente de crise febril. Lesão no lado esquerdo predominou nos pacientes com dificuldade escolar (p=0.049, naqueles com primeiras crises entre seis meses e cinco anos (p=0,021 e naqueles com crise febril complicada (p=0,032. Treze pacientes foram operados, dos quais oito ficaram livres de crises. CONCLUSÃO: Crise febril pode estar

  17. Esclerose lateral amiotrófica e neurossífilis

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    Eliova Zukerman

    1973-09-01

    Full Text Available É relatado um caso clínico de esclerose lateral amiotrófica (ELA, caracterizado por amiotrofias extensas na cintura escapular e membros superiores, associadas a exaltação dos reflexos osteotendinosos nos membros inferiores, com sinal de Rossolimo bilateral e sinal Babinski esboçado a esquerda, sem distúrbios sensitivos ou esfinterianos, em mulher de 51 anos de idade e com história progressiva de um ano. O exame de líquido cefalorraqueano permitiu o diagnóstico de neurossífilis parenquimatosa. Chamando a atenção para a raridade dessa associação, os AA. discutem o papel da neuro-lues como fator causal da síndrome de ELA, concluindo por uma provável relação de causa e efeito no caso descrito, por ter havido estabilização do quadro sintomatológico após terapêutica penicilínica.

  18. Síndrome de Erasmus: silicose e esclerose sistêmica

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    Aryádine Allinne Machado de Miranda

    2013-06-01

    Full Text Available A silicose é a pneumoconiose mais frequente, decorrente da inalação de sílica ou de poeiras minerais contendo silicatos, caracterizada principalmente pela fibrose pulmonar de caráter irreversível. Está associada com o desenvolvimento de outras doenças, incluindo tuberculose pulmonar, câncer pulmonar e doenças autoimunes. A doença do tecido conjuntivo posterior à exposição à sílica ocorre geralmente após 15 anos do início da exposição. A síndrome de Erasmus refere-se ao desenvolvimento de esclerose sistêmica em indivíduos previamente expostos à sílica e que apresentavam ou não silicose. Os autores relatam dois casos de pacientes com diagnóstico de silicose que desenvolveram esclerose sistêmica.

  19. Anestesia subaracnóidea para cesariana em paciente portadora de esclerose múltipla: relato de caso

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    Barbosa, Fabiano Timbó; Bernardo, Ronaldson Correia; Cunha, Rafael Martins da; Pedrosa, Maria do Socorro Melo

    2007-01-01

    JUSTIFICATIVA E OBJETIVOS: A esclerose múltipla é uma doença adquirida que se caracteriza por áreas desmielinizadas no encéfalo e na medula espinal. O quadro clínico depende das áreas anatômicas acometidas. As principais causas de morte são infecção, falência respiratória e estado de mal epiléptico. Ocorre em pacientes geneticamente predispostos após contato com fatores ambientais, principalmente os vírus. O objetivo desse relato foi apresentar a técnica anestésica adotada em paciente com esc...

  20. Prevalência de achados cutâneos em portadores de esclerose sistêmica: experiência de um hospital universitário Prevalence of cutaneous findings in systemic sclerosis patients: experience of a teaching hospital

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    Fernanda Guidolin

    2005-10-01

    Full Text Available FUNDAMENTOS: A esclerose sistêmica é colagenose pouco comum e muito rica em manifestações cutâneas. OBJETIVO: Estudar a prevalência das manifestações cutâneas na esclerose sistêmica em geral e nos seus diferentes subtipos (formas limitada, generalizada e mista. MÉTODOS: Analisaram-se 32 pacientes de esclerose sistêmica (20 com forma limitada, oito com generalizada e quatro com forma mista quanto à esclerose de pele, fenômeno de Raynaud, cicatrizes estelares, telangiectasias, leucomelanodermia, microstomia, calcinose e prurido. RESULTADOS: Encontraram-se esclerose de pele e fenômeno de Raynaud em 100% dos pacientes; cicatrizes estelares em 65,6%; telangiectasias em 43,7%; leucomelanodermia em 43,7%; microstomia em 31,25%; prurido em 28,1% e calcinose em 12,5%. Não se observaram diferenças entre as formas localizada e difusa da doença, sendo p = 1 para cicatrizes estelares; p = 0,69 para telangiectasias; p = 0,22 para microstomia, p = 1 para calcinose e prurido. A forma mista de doença não diferiu das formas isoladas (limitada e difusa quanto aos mesmos achados. CONCLUSÕES: As manifestações mais comuns na esclerose sistêmica são a esclerose de pele e o fenômeno de Raynaud, e a mais rara é a calcinose. As três formas apresentam freqüências semelhantes de Raynaud, cicatrizes estelares, microstomia, telangiectasia, calcinose e prurido.BACKGROUND: Systemic sclerosis or scleroderma is a rare collagen disease presenting several cutaneous manifestations. OBJECTIVE: To study the prevalence of cutaneous manifestations in systemic sclerosis and its subtypes (limited form, diffuse form and overlap syndrome. METHODS: We studied 32 patients with scleroderma (20 with the limited form; 8 with the diffuse form and 4 with overlap syndrome considering skin sclerosis, Raynaud's phenomenon, digital scars, telangiectasia, leucomelanoderma (pigmentary changes, microstomy, calcinosis and pruritus. RESULTS: We found skin sclerosis and

  1. Disfagia orofaríngea em pacientes com esclerose múltipla: as escalas de classificação da doença refletem a gravidade da disfagia?

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    Alessandro Murano Ferré Fernandes

    2013-08-01

    Full Text Available A esclerose múltipla é uma afecção neurológica que envolve distúrbios da deglutição. Muitos estudos têm mostrado associação entre o comprometimento neurológico e o desempenho da deglutição, porém, os resultados têm sido conflitantes. OBJETIVO: Identificar a frequência de disfagia nos pacientes com esclerose múltipla e os indicadores neurológicos que podem representar o desempenho da deglutição. MÉTODO: Neste estudo (estudo transversal, 120 pacientes com esclerose múltipla foram submetidos à avaliação funcional da deglutição por fibronasofaringolaringoscopia, cujos resultados foram comparados com a pontuação das escalas de classificação (Formas Clínicas Evolutivas da Doença, Escala de Incapacidade Funcional por Sistemas e Escala Ampliada de Incapacidade Funcional [Kurtzke Expanded Disability Status Scale]. RESULTADOS: A disfagia foi identificada em 90% dos pacientes. Dentre as formas clínicas, as formas progressivas (primária progressiva e secundária progressiva apresentaram com maior frequência disfagia grave, enquanto a forma remitente-recorrente apresentou mais frequentemente disfagia leve e moderada. Em relação à Escala de Incapacidade Funcional por Sistemas, as funções cerebelares, do tronco encefálico e mental tiveram associação com a disfagia, especialmente na forma grave. Quanto à Escala Ampliada de Incapacidade Funcional, pontuações mais altas se associaram aos quadros graves de disfagia. CONCLUSÃO: A disfagia é frequente em pacientes com esclerose múltipla, especialmente naqueles com maior comprometimento das funções neurológicas.

  2. Tireoidite de Hashimoto pode estar associada a um subgrupo de pacientes de esclerose sistêmica com hipertensão pulmonar

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    Ciliana Cardoso B. Costa

    2014-10-01

    Full Text Available Introdução: Estudos recentes mostram associação entre tireoidites autoimunes e esclerose sistêmica (ES, e sugerem que essa condição pode interferir no fenótipo da ES. Entretanto, esses estudos avaliam as tireoidites autoimunes como um todo e nenhum deles aborda especificamente a tireoidite de Hashimoto (TH na ES. Objetivo: Investigar a presença de TH em pacientes com ES e sua possível associação com as manifestações da doença. Casuística e métodos: Manifestações clínicas de hipotireoidismo, TSH, T4 livre e anticorpos antitireoidanos (anti-TPO, anti TBG e TRAb foram pesquisados em 56 pacientes com ES. Pacientes com ES e TH foram comparados com pacientes com ES sem tireoidite. Resultados: TH foi observada em 19,64% dos pacientes com ES. Não foi encontrada associação entre a TH e as diferentes formas de doença ou com o perfil de autoanticorpos. Da mesma forma, não houve diferença entre a média do escore de Rodnan modificado e entre a presença de fenômeno de Raynaud, cicatrizes estelares, necrose digital, miosite, artrite, sintomas sicca, dismotilidade esofágica ou crise renal esclerodérmica quando os grupos foram comparados. Por outro lado, pacientes com TH apresentaram maior frequência de hipertensão pulmonar quando comparados a pacientes sem TH (66,6% vs 22,5%; p = 0,016. Conclusões: Na amostra de ES estudada, a TH está associada a uma maior prevalência de hipertensão pulmonar. Estudos de seguimento a longo prazo, englobando um número maior de pacientes com ES e TH, são necessários para confirmar esses dados.

  3. Tireoidite de Hashimoto pode estar associada a um subgrupo de pacientes de esclerose sistêmica com hipertensão pulmonar

    OpenAIRE

    Costa, Ciliana Cardoso B.; Medeiros, Morgana; Watanabe, Karen; Martin, Patricia; Skare, Thelma L.

    2014-01-01

    Introdução: Estudos recentes mostram associação entre tireoidites autoimunes e esclerose sistêmica (ES), e sugerem que essa condição pode interferir no fenótipo da ES. Entretanto, esses estudos avaliam as tireoidites autoimunes como um todo e nenhum deles aborda especificamente a tireoidite de Hashimoto (TH) na ES. Objetivo: Investigar a presença de TH em pacientes com ES e sua possível associação com as manifestações da doença. Casuística e métodos: Manifestações clínicas de hipotireoidi...

  4. Esclerose tuberosa: avaliação de miofibroblastos em angiofibromas cutâneos - relato de caso

    OpenAIRE

    Perez,Erick Gomes; Paranaíba,Lívia Ribeiro; Bonan,Paulo Rogério; Orsi Júnior,Julian Miranda; Oliveira,Adriano Macedo de; Martelli Júnior,Hercílio

    2010-01-01

    Esclerose tuberosa é uma condição rara e autossômica dominante. Miofibroblastos são células que exibem fenótipo híbrido entre fibroblastos e células musculares lisas. O objetivo deste caso clínico é mostrar as características clínicas e histopatológicas da esclerose tuberosa e avaliar miofibroblastos nos angiofibromas cutâneos dessa condição. Lesões removidas foram coradas em HE e tricrômico de Masson. Para determinar a presença de miofibroblastos foi usada imunoistoquímica para α-SMA. E...

  5. Uso da sequência FLAIR-EPI na análise da esclerose mesial temporal EPI-FLAIR sequence in the evaluation of mesial temporal sclerosis

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    Marcos Alberto da Costa Machado Júnior

    2001-06-01

    Full Text Available O objetivo deste estudo é analisar as alterações morfológicas e de intensidade de sinal das regiões hipocampais em pacientes, com epilepsia temporal fármaco-resistente. Para tal, estudamos 8 pacientes com esclerose mesial temporal, utilizando aparelhagem de RM de 1,5T, com sequências Spin Eco - SE, Fast Spin Eco - FSE, Fluid Atenuation Inversion Recovery, com Eco Planar Imaging - FLAIR-EPI. Observamos a superioridade da sequência FLAIR na detecção do aumento da intensidade de sinal da região hipocampal, particularmente com cortes coronais, em relação às sequências SE e FSE, com a vantagem de ser uma técnica de rápida execução. A sequência STIR evidenciou adelgaçamento da cortical do hipocampo, na metade dos casos que apresentavam alteração de sinal.The purpose of this study is to evaluate morpholologycal and signal intensity changes in the hippocampus in patients with medically intractable temporal lobe epilepsy. We studied 8 patients with mesial temporal sclerosis using a 1.5 -T MR and the following sequences Spin Eco- SE, Fast Spin Echo- FSE, Fluid Atenuation Inversion Recovery Echo Planar Imaging - FLAIR-EPI. We noticed a sensitive increase signal intensity on FLAIR- EPI sequences, particularly, in coronal images, than on SE and FSE sequences. The STIR sequence showed a cortical hippocampus atrophy in half of the cases, in whom signal abnormalities were present.

  6. Relação entre fadiga e distúrbios autonômicos na esclerose múltipla Relation between fatigue and autonomic disturbances in multiple sclerosis

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    Andréa Temponi Lebre

    2007-09-01

    Full Text Available A fadiga é sintoma comum na esclerose múltipla (EM. O objetivo deste estudo é relacionar a fadiga nos portadores de EM aos distúrbios autonômicos. Participaram deste estudo, 50 pacientes portadores de EM na forma clínica remitente recorrente. Trinta e três (66% eram mulheres e 17 (34% homens; pontuação menor ou igual a 3,5 na Escala de EDSS. Foram aplicados em todos os pacientes cinco testes cardiovasculares, já padronizados, para avaliação das funções simpáticas e parassimpáticas. Os resultados encontrados no teste do exercício isométrico foram elevações da pressão arterial de 14,62±9,13 mmHg para o grupo com fadiga e de 21,68±7,18 mmHg para o grupo sem fadiga, sendo estatisticamente significante (pFatigue is a common symptom in multiple sclerosis (MS. The objective of this study was to relate fatigue and autonomic disturbances in MS. Fifty patients with MS relapsing remitting clinical form participated of this study. Thirty three (66% were women and 17 (34% men. Score less or equal to 3.5 in the EDSS. Five non invasive cardiovascular tests were applied in all patients for the sympathetic and parasympathetic evaluation. The results obtained in the hand grip test were increase in the blood pressure of 14.62±9.13 mmHg for the group with fatigue and of 21.68±7.18 mmHg for the non fatigue group. This difference was statistically significant (p<0.05. Conclusion is that there is a loss in the capacity to increase the blood pressure in patients with fatigue suggesting a sympathetic dysfunction.

  7. Spinal cord tumor in a patient with multiple sclerosis: case report Tumor de medula espinal em paciente com esclerose múltipla: relato de caso

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    Mario Augusto Taricco

    2002-06-01

    Full Text Available The association between multiple (MS sclerosis and cerebral gliomas has been sporadically reported in the literature, causing a long lasting discussion if these lesions occur coincidentally or if MS plaques may actually lead to the genesis of gliomas. We report a 36 year old man who developed a rapid onset of right side weakness and loss of vision, having established a diagnosis of MS which was confirmed by CSF analysis and MRI. Nine years later he developed progressive tetraparesis, leading initially to suspicion of illness relapse and a demyelinating plaque in the spinal cord. However, after MRI investigation, a spinal cord tumor was diagnosed. The patient underwent cervical spine laminotomy for microsurgical removal of the spinal cord tumor diagnosed as ependimoma. The neurological deficits improved significantly.A associação entre esclerose múltipla (EM e gliomas cerebrais foi relatada esporadicamente na literatura, levando a longa discussão quanto à possibilidade das placas de esclerose estarem envolvidas na etiologia dos gliomas ou dessas lesões ocorrerem coincidentemente. Relatamos um paciente de 36 anos que desenvolveu hemiparesia direita rapidamente progressiva e perda visual, sendo estabelecido o diagnóstico de EM após análise do LCR e imagens de RM de encéfalo. Após nove anos o paciente desenvolveu tetraparesia lentamente progressiva, levantando inicialmente a hipótese de atividade da doença e aparecimento de placa de EM na medula espinal. Contudo, após investigação com RM de coluna, um tumor medular foi diagnosticado. Foi então submetido a laminectomia cervical para ressecção microcirúrgica do tumor, que foi diagnosticado como ependimoma. Os déficits neurológicos melhoraram significativamente.

  8. Perfil de autoanticorpos e correlação clínica em um grupo de pacientes com esclerose sistêmica na região sul do Brasil Autoantibody profile and clinical correlation in a group of patients with systemic sclerosis in southern Brazil

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    Carolina de Souza Müller

    2011-08-01

    Full Text Available OBJETIVOS: Este estudo visou à análise das manifestações da esclerose sistêmica (ES, com ênfase na pesquisa dos autoanticorpos e de suas correlações clínicas, na população de pacientes em acompanhamento no ambulatório de ES do Hospital de Clínicas da Universidade Federal do Paraná. METODOLOGIA: Realizou-se um estudo transversal com 96 pacientes em acompanhamento no ambulatório de ES do hospital, entre setembro de 2007 e setembro de 2009. RESULTADOS: A maioria dos pacientes era do sexo feminino, com idade entre a quarta e quinta décadas e tempo de doença com mediana de 10 anos. A forma cutânea limitada de ES foi a mais prevalente. Na análise dos autoanticorpos, o anticorpo anticentromérico (ACA associou-se a ES forma limitada, idade mais avançada ao diagnóstico, maior tempo de doença, intervalo maior entre o surgimento do fenômeno de Raynaud (FRy e o primeiro sintoma não FRy, maior prevalência de hipertensão arterial sistêmica (HAS e de bloqueios de condução cardíaca. O anticorpo antitopoisomerase-1 (antitopo-1, previamente denominado anti-Scl-70 foi mais comum na forma difusa da ES, na presença de doença ativa e de úlceras digitais. O anticorpo anti-RNA polimerase III (antipol III correlacionou-se com a forma difusa de ES, presença de doença ativa e sinovite. CONCLUSÕES: Este estudo vem ressaltar e ratificar o papel relevante dos autoanticorpos na avaliação dos pacientes com ES, sendo possível correlacionar o perfil autoimune dessa população com manifestações específicas da doençaOBJECTIVES: To assess the manifestations of systemic sclerosis (SSc, with an emphasis on the analysis of autoantibodies and their clinical correlations, in a population of patients followed up at the SSc Outpatient Clinics of the Hospital de Clínicas of the Universidade Federal do Paraná. METHODOLOGY: Cross-sectional study with 96 patients followed up at the SSc Outpatient Clinics of the hospital between September 2007 and

  9. Esclerose sistémica progressiva – Um caso clínico

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    Inês Vicente

    2002-09-01

    Full Text Available RESUMO: A esclerose sistémica é uma doença relativamente rara sendo a terceira doença mais frequente do tecido conjuntivo, logo após a artrite rewnatoide e o lupus eritematoso sistemico. A sua forma de apresentação é variada e depende dos órgão afectados.Os autores apresentam um caso clínico de fibrose pulmonar em doente do sexo feminino de 68 anos, apresentando queixas de dispneia há váraos anos e que foram sempre atribuidas a insuficiência cardíaca. O estudo da doençe permitiu concluir tratarse de urn caso de doença intersticial pulmonar (pneumonia intersticial usual enquadrado no quadro de esclerose sistémica.REV PORT PNEUMOL 2002; VIII (5: 425-431 ABSTRACT: Systemic sclerosis is relatively rare, being the third most frequent disease of the connective tissue, just behind rhewnatoid arthritis and systemic erythematous lupus. It’s presentation form varies with the affected organs.The authors present a clinical case of lung fibrosis in a 68 years old female patient, with several years’ dyspnoea, always attributed to cardiac insufficiency. The investigation allowed to diagnose a lung interstitial disease (usual interstitial pneumonia as a manifestation of systemic sclerosis.REV PORT PNEUMOL 2002; VIII (5: 425-431 Palavras-chave: Pneumonia Intersticial Usual, esclerose sistémica, corticoterapia, Key-words: Usual Interstitial Pneumonia, systemic sclerosis, corti coid therapy

  10. Fadiga na forma remitente recorrente da esclerose múltipla Fatigue in multiple sclerosis relapsing-remitting form

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    MARIA FERNANDA MENDES

    2000-06-01

    Full Text Available Foram avaliados 95 pacientes com forma remitente-recorrente da esclerose múltipla quanto à presença de fadiga. A Escala de Severidade de Fadiga foi aplicada em todos os pacientes. Em 64 pacientes (67,4% a fadiga foi encontrada. Não observamos diferenças clínicas quanto ao gênero, idade, grau de incapacidade funcional e depressão, nos pacientes com e sem fadiga. Foi encontrada correlação entre ansiedade e tempo de doença com a presença de fadiga. Ao analisarmos estas variáveis quanto à intensidade da fadiga, observamos haver associação entre fadiga grave e maior incapacidade funcional.In 95 patients with the remitting-relapsing form of multiple sclerosis we investigated fatigue. All of them were evaluated with the Fatigue Severity Scale and we found it in 64 patients (67.4%. Gender, age, depression and fuctional incapacity was not predictive of fatigue occurrence, while anxiety and time of disease seems to be correlated with it. When we analysed the fatigue severity, a correlation between the EDSS and the increasing fatigue severity was found.

  11. Prevalence of epilepsy in a case series of multiple sclerosis patients Prevalência de epilepsia numa coorte de pacientes com esclerose múltipla

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    Cynthia Dumas Viveiros

    2010-10-01

    Full Text Available OBJECTIVE: The prevalence of epilepsy in multiple sclerosis (MS patients has been a subject of interest for some years. The objectives of this study were to describe the clinical, radiological and electroencephalographic characteristics of epileptic seizures and to calculate the prevalence of epilepsy in a case series of MS patients. METHOD: Medical charts of MS patients were reviewed and patients who had suffered epileptic seizures were identified. RESULTS: Of 160 cases analyzed, 5 had suffered epileptic seizures and one had comorbid mesial hippocampal sclerosis, confirmed by magnetic resonance imaging in a patient with complex partial seizures that began fifteen years prior to her diagnosis of MS. In the other four patients, seizures occurred both during the acute phase of the disease and in the chronic phase. CONCLUSION: The prevalence of epileptic seizures in MS patients in this study was 2.5%, similar to that found in other studies.OBJETIVO: A prevalência da epilepsia em pacientes com esclerose múltipla (EM tem sido objeto de interesse há vários anos. Os objetivos deste estudo foram descrever as características clínicas, radiológicas e eletroencefalográficas das crises epilépticas e estimar a prevalência de epilepsia na EM numa série de casos. MÉTODO: Foram revisados prontuários de pacientes com EM e identificados os casos que apresentaram crise epiléptica. RESULTADOS: Dos 160 casos analisados, cinco apresentaram crise epiléptica, sendo que, um caso, houve a presença de comorbidade com esclerose mesial do hipocampo, comprovada através de ressonância magnética numa paciente com crises parciais complexas iniciadas quinze anos antes do diagnóstico de EM. Nos outros quatro pacientes, as crises ocorreram tanto na fase aguda da doença, como na fase crônica. CONCLUSÃO: A prevalência de crises epiléticas nos pacientes com EM neste estudo foi de 2,5%, semelhante à encontrada em outros estudos.

  12. A linhaça (Linum usitatissimum como fonte de ácido α-linolênico na formação da bainha de mielina Flaxseed (Linum usitatissimum as a source of α-linolenic acid in the development of the myelin sheath

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    Kátia Calvi Lenzi de Almeida

    2009-10-01

    Full Text Available A linhaça (Linum usitatissimum é uma semente oleaginosa que tem sido estudada por seus efeitos benéficos à saúde. É considerada um alimento funcional, pelo fato de ser uma fonte natural de fitoquímicos, e por conter o ácido graxo α-linolênico (C18:3 n-3, que pode ser metabolicamente convertido nos ácidos docosaexahenóico (C22:6 n-3 e eicosapentaenóico (C20:5 n-3, sendo o primeiro essencial para o desenvolvimento do sistema nervoso central. Durante o crescimento do cérebro, há uma grande incorporação do ácido docosaexahenóico, que tem papel importante na formação de suas membranas celulares. Diante disto, esta comunicação visa a abordar os prováveis mecanismos pelos quais o ácido docosaexahenóico, proveniente do ácido α-linolênico presente abundantemente na semente de linhaça, interfere na formação da bainha de mielina, assim como relatar a técnica mais adequada para visualização desta bainha.Flaxseed is an oily seed that has been studied for its beneficial health effects. It is considered a functional food because it is a natural source of phytochemicals and contain the fatty acid α-linolenic acid (C18:3 n-3 that can be metabolically converted into docosahexaenoic acid (C22:6 n-3 and eicosapentaenoic acid (C20:5 n-3. The former is essential for the development of the central nervous system. During brain growth, there is a great incorporation of docosahexaenoic acid which plays in important role in the formation of cell membranes. This communication intended to address the likely mechanisms by which docosahexaenoic acid originating from α-linolenic acid, present in abundance in flaxseed, interferes in the formation of the myelin sheath and report the best method to see this structure.

  13. Desenvolvimento bem-sucedido com esclerose múltipla: um ensaio em psicologia positiva Successful development with multiple sclerosis: an essay in positive psychology

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    Vitor Geraldi Haase

    2005-08-01

    Full Text Available A natureza crônica e progressivamente incapacitante de muitas enfermidades neurológicas, tais como a esclerose múltipla, constitui um desafio para a reabilitação. Uma abordagem que objetive apenas a restituição funcional corre o risco de fracassar, impondo uma carga de sofrimento adicional ao portador. As abordagens compensatórias têm se demonstrado eficazes no intuito de capacitar os portadores de doenças crônicas a enfrentar suas dificuldades cotidianas a curto-prazo e planejar o seu curso de vida a longo-prazo, aumentando assim o senso de controle e autonomia e melhorando a qualidade de vida. A abordagem compensatória impõe o estabelecimento de uma agenda positiva. Neste ensaio nós estabelecemos um paralelo entre a adaptação psicossocial à esclerose múltipla e os processos observados no desenvolvimento psicológico adulto. São notadas tanto semelhanças quanto diferenças. Algumas possibilidades são exploradas, que os modelos derivados do estudo do desenvolvimento bem-sucedido na idade adulta e velhice oferecem para o estabelecimento de uma agenda positiva para os portadores de esclerose múltipla.The chronic and progressively incapacitating nature of many neurological illnesses, such as multiple sclerosis, poses major challenges to the rehabilitative efforts. Approaches based solely on the pursuit of functional restitution incur the risk of failure and additional distress to the sufferers. Compensatory approaches have been consistently shown effective in the empowerment of individuals both to cope with daily life in the short run and to plan their life courses in the long run, thus regaining control and autonomy and improving well being. Compensation requires the establishment of a positive agenda. In this essay we establish a parallel between the processes of psychosocial adaptation to multiple sclerosis and normal adult development. Both similarities and differences are noted. We try to explore some perspectives derived

  14. Relato de caso: esclerose tuberosa

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    Samuel Simis

    2016-10-01

    Full Text Available Introdução: O Complexo de Esclerose Tuberosa (CET é uma síndrome neurocutânea transmitida hereditariamente, de traço autossômico dominante e que se manifesta por uma tríade clássica: deficiência mental, convulsões e adenoma sebáceo. A mutação responsável pela síndrome está presente em até 85% dos portadores de CET e.ocorre nos genes supressores tumorais TSC1 e TSC2, que produzem hamartina e tuberina, respectivamente.A prevalência do CET é de 1:10.000 a 1:170.000, atinge mais indivíduos do sexo masculina e é rara em negros. Relato de Caso: R.C.S.B., paciente do sexo feminino, 16 anos, vem encaminhada ao ambulatório de neurologia devido a quadro de convulsões tônico-clônicas generalizadas e crises de ausência diárias há 1 ano, mas com história de convulsões aos 2 anos que cessaram espontaneamente. Está em tratamento com fenitoína 200mg/dia e carbamazepina 800mg/dia, mas ainda apresenta crises de ausência. A paciente apresenta as lesões cutâneas típicas do CET: adenomas sebáceos (angiofibroma em face distribuídos simetricamente entre nariz e bochechas, envolvendo ainda fronte e queixo. Não há sinais de retardo mental. A ressonância nuclear magnética revelou imagens com padrão compatível com áreas de desmielinização. O eletroencefalograma encontrava-se normal. Conclusão: O tratamento do CET ainda é um desafio para muitos neurologistas, uma vez que não há tratamento específico para doença. A paciente deve contar com equipe multidisciplinar, por vezes é necessário acompanhamento com neurologista, dermatologista, geneticista, psicólogos e outros, dependendo das manifestações do CET. A finalidade terapêutica é a qualidade de vida da paciente, que pode ser prejudicada pelas várias convulsões ou alterações estéticas da doença.

  15. Potencial evocado miogênico vestibular: novas perspectivas diagnósticas em esclerose múltipla Vestibular evoked myogenic potential: new perspectives in multiple sclerosis

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    Renata Chade Aidar

    2005-02-01

    Full Text Available OBJETIVO: Avaliar o potencial evocado miogênico vestibular em pacientes com esclerose múltipla, como método de auxílio diagnóstico. FORMA DE ESTUDO: Caso-controle. MATERIAL E MÉTODO: Estudamos um grupo-controle (n=15 de indivíduos normais e um grupo experimental (n=15 que foi composto por pacientes com diagnóstico de esclerose múltipla. Ambos os grupos foram submetidos ao exame de potencial evocado miogênico vestibular. Em cada orelha foram aplicados 200 estímulos na forma de cliques e repetidos por 2 ciclos consecutivos com objetivo de avaliar a reprodutibilidade. Os eletrodos ativos de superfície foram colocados no S‡superior do músculo esternocleidomastoideo e de referência na borda anterior da clavícula ipsilateral. Os indivíduos foram instruídos à rotação lateral da cabeça em direção contralateral à orelha estimulada. RESULTADOS: Obtivemos no potencial evocado miogênico vestibular respostas rápidas, reprodutíveis e bifásicas. A latência das ondas P1 e N2 e amplitude P1-N2 apresentaram um maior valor no grupo experimental quando comparada com o grupo-controle. Não observamos diferença significativa nas respostas das ondas P1 e N2 e amplitude P1-N2 quando comparamos as orelhas. Verificamos que os indivíduos com esclerose múltipla apresentaram ausência de respostas em 30% dos casos. Ao avaliarmos os indivíduos do grupo experimental com sintomas otoneurológicos e compararmos com os pacientes sem sintomas, observamos que a latência da onda P1, N2 e amplitude P1-N2 estiveram maiores nos casos sintomáticos. CONCLUSÃO: O potencial evocado miogênico vestibular foi considerado um bom método de auxílio diagnóstico da via vestíbulo-espinal nos casos de esclerose múltipla.AIM: To evaluate vestibular evoked myogenic potentials in patients with multiple sclerosis as method of diagnostic support. STUDY DESIGN: Case-control. MATERIAL AND METHOD: We studied a group of normal individuals (n=15 and a Studied group

  16. Ulcerative colitis and esclerosant cholangitis in children and adolescents; case report and literature revision

    International Nuclear Information System (INIS)

    Parra G, Giovanna S; Edelberto Mulett V; Mario Santacoloma O

    2002-01-01

    In spite of being considered rare in the pediatric practice, the intestinal inflammatory illness is recognized now with more frequency in children of all the ages. In fact, 25 to 30% of all the patients with Crohn illness, and 20% the patients with ulcerative colitis, they consult before the 20 years. A case is presented of patient of 15 years with primary esclerosant cholangitis

  17. Consenso expandido do BCTRIMS para o tratamento da esclerose múltipla: II. As evidências para o uso de glicocorticóides e imunomoduladores The BCTRIMS expanded consensus on treatment of multiple sclerosis: II. The evidences for the use of glucocorticoids and immunomodulatory treatments

    Directory of Open Access Journals (Sweden)

    Marcos Aurélio Moreira

    2002-09-01

    Full Text Available A esclerose múltipla (EM é doença inflamatória em que mecanismos imunológicos desempenham importante papel na patogênese das lesões do sistema nervoso central. Drogas que agem em diferentes etapas destes mecanismos têm sido usadas em seu tratamento. O presente artigo analisa com base nas classes de evidências científicas e tipos de recomendações propostos pela comunidade científica, os mais importantes ensaios clínico-terapêuticos com os glicocorticóides e os imunomoduladores, incluindo a imunoglobulina humana endovenosa, no tratamento da esclerose múltipla. Ele tem por objetivo fornecer subsídios para a formulação do Consenso Expandido para o Tratamento da Esclerose Múltipla.Multiple sclerosis is an inflammatory disease in which immunological mechanisms play an important role in causing demyelinating lesions in the central nervous system. A number of drugs acting in different stages of these mechanisms have been tested for its treatment. This paper analyses the most important clinical trials with glucocorticoids and immunomodulatory treatments, including human immunoglobulin, using the classes of evidences and types of recommendations as have been defined and widely accepted by the international scientific community. It aims to provide sufficient information to support the BCTRIMS Expanded Consensus on Treatment of MS.

  18. Características psicométricas dos instrumentos usados para avaliar a qualidade de vida na esclerose múltipla: uma revisão bibliográfica

    OpenAIRE

    Pedro,Luísa Maria Reis; Pais-Ribeiro,José Luís

    2008-01-01

    A esclerose múltipla (EM) é a doença crônica neurológica que mais afeta adultos jovens; em 80% dos casos, a doença progride para situações de níveis variados de incapacidade, o que torna necessário avaliar a qualidade de vida (QV) desses indivíduos. O objetivo desta revisão foi localizar estudos que avaliam a QV em indivíduos com EM, identificando os instrumentos utilizados e suas características psicométricas. Foram consultadas as bases Psycinfo, Psycarticles, Psycbooks, Psychology & Beh...

  19. Correlation between fatigue and self-esteem in patients with multiple sclerosis Correlação entre gravidade da fadiga e baixa estima na esclerose múltipla

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    Yára Dadalti Fragoso

    2009-09-01

    Full Text Available OBJECTIVE: To assess the possible association of fatigue with self-esteem in multiple sclerosis (MS patients. METHOD: Thirty patients were prospectively assessed. None of them presented moderate or severe depression or anxiety and their degree of disability was low (EDSSOBJETIVO: Avaliar a possível associação entre fadiga e autoestima em pacientes com esclerose múltipla (EM. MÉTODO: Trinta pacientes foram avaliados de forma prospectiva. Nenhum deles apresentava depressão ou ansiedade moderada ou grave, e o grau de incapacidade foi baixo (EDSS<3,5. Eles estavam clinicamente estáveis por pelo menos três meses e estavam recebendo a mesma medicação por pelo menos seis meses. O nível socioeconômico foi avaliado. A gravidade da fadiga e a autoestima foram avaliadas pelo uso de escalas especificas e validadas. Pacientes com ansiedade e/ou depressão moderadas ou graves foram excluídos. RESULTADOS: Baixa autoestima se mostrou correlacionada com fadiga (p=0,01, porém não relacionada a qualquer outra variável, como sexo, idade, EDSS, duração da EM, número se surtos, depressão e/ou ansiedade leves. CONCLUSÃO: Maior gravidade de fadiga na EM se correlaciona com baixa autoestima, sugerindo assim que esta queixa crônica que afeta tantos pacientes pode interferir com a maneira pela qual eles se vêem e se valorizam.

  20. Unilateral mesial temporal atrophy after a systemic insult as a possible etiology of refractory temporal lobe epilepsy: case report Esclerose mesial temporal unilateral após insulto sistêmico como possível etiologia de epilepsia refratária do lobo temporal: relato de caso

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    Arthur Cukiert

    1997-09-01

    Full Text Available Mesial temporal sclerosis is the main pathological substrate present in refractory temporal lobe epilepsy and its presence is often related to the occurrence of febrile seizures in infancy. There is an on-going discussion on the nature of mesial temporal sclerosis as it related to epilepsy: cause or consequence. A previously normal child developed hyperosmolar coma after abdominal surgery at the age of 6. Three months afterwards he developed simple and complex partial seizures with an increasing frequency and refractory to multiple mono-and polytherapic drug regimens. He was evaluated for surgery at the age of 13. Ictal and interictal recordings showed left temporal lobe abnormalities. Early CT scaning suggested left temporal atrophy. MRI showed mesial temporal sclerosis. Neuropsichological testing showed verbal memory deficits and he passed a left carotid artery amytal injection. He was submitted to a cortico-amygdalo-hippocampectomy and has been seizure-free since then. The clinical data obtained from this patient suggest that at least in this case mesial temporal sclerosis would be related to the cause of epilepsy and not resultant from repeated seizure activity.A esclerose mesial temporal é o principal substrato anatomo-patológico envolvido na epilepsia refratária do lobo temporal e está frequentemente associada à ocorrência de convulsões febris na infância. Persiste até o momento intensa discussão se a esclerose mesial seria causa ou consequência da síndrome epiléptica. Uma criança previamente normal, desenvolveu coma hiperosmolar após intercorrência em cirurgia abdominal aos 6 anos de idade. Após 3 meses iniciaram-se crises parciais simples e complexas em frequência ascendente e refratárias a múltiplos esquemas terapêuticos em mono- e politerapia. Ele realizou investigação pré-operatória para epilepsia aos 13 anos de idade. Registros eletrencefalográficos de superfície ictais e interictais mostraram anormalidades

  1. Esclerose lateral amiotrófica com surdez: relato de um caso e revisão da literatura

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    Annibal Coelho de Amorim

    1982-06-01

    Full Text Available É relatado um caso de paralisia bulbo-pontina crônica progressiva com surdez, de início precoce, evoluindo de maneira protraída há 9 anos. Pelos achados histopatológicos e eletromiográficos concluem tratar-se de variante da forma juvenil de esclerose lateral amiotrófica, forma de Van Laere.

  2. Alterações encontradas no potencial visual evocado por padrão reverso em pacientes com esclerose múltipla definida Pattern-reversal visual evoked potential abnormalities in patients with defined multiple sclerosis

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    Eric Pinheiro de Andrade

    2007-12-01

    Full Text Available INTRODUÇÃO: Esclerose múltipla é uma doença desmielinizante idiopática, podendo acometer o nervo óptico com perda visual unilateral aguda que pode ser observada através do potencial visual evocado (PVE, definindo tal exame como de grande validade para o estudo pré-quiasmático das vias visuais na esclerose múltipla. OBJETIVO: Analisar os achados dos potenciais visuais evocados por reversão de padrões em pacientes com diagnóstico prévio de esclerose múltipla e sua comparação com a acuidade visual. MÉTODOS: Vinte e quatro pacientes com diagnóstico definido de esclerose múltipla foram submetidos ao PVE por reversão de padrões no período de outubro de 2001 a março de 2007. RESULTADOS: Na resposta do componente P100, nos estímulos de 15' e 1º, se observou que 19 olhos apresentaram resposta de latência até 115 ms em ambas as estimulações, coincidindo também em 6 olhos que apresentaram resposta de latência entre 116 a 135 ms, em 11 olhos que apresentaram resposta de latências superiores a 135 ms, e em 4 olhos que não apresentaram respostas às estimulações. Correlacionando a acuidade visual com a latência de P100 para 15', obtemos na correlação de Pearson r= 0,85 com p= 0,000000123, e para 1º, r= 0,87 com p= 0,0000000338. CONCLUSÃO: Aproximadamente 60,4% dos pacientes apresentaram anormalidades no PVE por padrões reversos. Contudo, a correlação entre a latência de P100 (15' e 1º e a acuidade visual foi estatisticamente significativa, assim sendo, quanto melhor a acuidade visual, melhor será sua resposta aos estímulos do PVE por reversão de padrões.INTRODUCTION: Multiple sclerosis is an idiopathic demyelinating disease that may affect the optic nerve leading to acute unilateral visual loss, which could be observed by means of evoked visual potential (VEP. This exam is much valued for studying prechiasmatic visual paths in multiple sclerosis. PURPOSE: To analyze the findings of pattern reversal VEP in

  3. Capilaroscopia periungueal pode sugerir atividade de doença pulmonar na esclerose sistêmica Nailfold capillaroscopy can predict active pulmonary involvement in systemic sclerosis

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    Markus Bredemeier

    2004-02-01

    Full Text Available OBJETIVO: Estudar a associação entre alterações capilaroscópicas e lesões em órgãos-alvo na esclerose sistêmica (ES. MÉTODOS: Noventa e um pacientes com ES foram avaliados através de entrevista, exame físico, capilaroscopia periungueal (CPU, sorologia, provas de função pulmonar, cintilografia de trânsito esofágico, ecocardiografia com Doppler e tomografia computadorizada de alta resolução pulmonar (TCAR. A deleção capilar na CPU foi avaliada usando o escore de deleção vascular de Lee; consideraram-se alterações severas na CPU um escore médio de deleção >1 ou número médio de megacapilares por dedo >1 para fins de análise. Hipertensão arterial pulmonar (HAP foi definida como pressão sistólica na artéria pulmonar >40 mmHg. RESULTADOS: Pacientes com alterações capilaroscópicas severas apresentaram maior prevalência de áreas de opacidades em vidro-fosco (OVF (P=0,016, redução da capacidade difusional pulmonar (P=0,026 e disfunção esofágica (P=0,001. HAP ocorreu somente em pacientes com alterações severas na CPU (P=0,114. Naqueles com duração de doença OBJECTIVE: To evaluate the association of capillaroscopic alterations with end-organ damage in systemic sclerosis (SSc. METHODS: Ninety-one SSc patients were studied through interview, physical examination, nailfold capillary microscopy (NCM, serology, pulmonary function tests, esophageal transit scintigraphy, Doppler echocardiography and pulmonary highresolution computed tomography (HRCT. Capillary loss on NCM was evaluated using the avascular score (AS; patients with mean AS =1 or mean number of megacapillaries per finger =1 were considered to have severe capillaroscopic alterations for analytical purposes. Pulmonary arterial hypertension (PAH was defined as systolic pulmonary arterial pressure =40 mmHg. RESULTS: Patients with severe NCM alterations had greater prevalence of ground-glass opacities (GGO areas (P=0.016, reduced pulmonary diffusing

  4. Esclerose sistêmica e sarcoidose Scleroderma and sarcoidosis

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    Fernanda Guidolin

    2005-10-01

    Full Text Available Os autores descrevem o caso de uma paciente com esclerose sistêmica (ES - forma limitada - com comprometimento pulmonar tipo fibrose intersticial. Após sete anos sem acompanhamento, foram identificados gânglios mediastinais e esplenomegalia. A biópsia de linfonodos mostrou granuloma não caseoso sugestivo de sarcoidose. Estamos mostrando, neste caso, a associação de ES e sarcoidose, para chamar a atenção para esse fato e enfatizar que a sarcoidose deve ser lembrada no diagnóstico diferencial das complicações pulmonares da esclerodermia.The authors describe the case of a patient with limited scleroderma and interstitial lung disease. Follow-up was lost for seven years, when patient returned presenting nodular mediastinal enlargement and splenomegaly. Lymph node biopsy showed granulomatous lesions without caseum suggestive of sarcoidosis. This case is being presented to remind the association of scleroderma and sarcoidosis as a possible differential diagnosis of scleroderma pulmonary complications.

  5. Avaliação da pressão venosa periférica na esclerose sistêmica Peripheral venous pressure in systemic sclerosis

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    João Potério-Filho

    2004-02-01

    Full Text Available OBJETIVO: Estabelecer a utilidade da medida indireta da pressão venosa periférica (PVP na avaliação de pacientes com esclerose sistêmica (ES, comparando com uma população controle normal. MÉTODOS: Estudo prospectivo avaliando 18 pacientes esclerodérmicas do sexo feminino (sendo oito delas com úlcera cutânea isquêmica submetidas à medida indireta da PVP (por pletismografia. Os dados foram comparados a um grupo controle normal de 18 mulheres hígidas, pareadas para idade. RESULTADOS: Os níveis de pressão arterial foram semelhantes nos dois grupos. Os valores de PVP estavam significativamente diminuídos nos pacientes com ES (58.9 ± 11.6 mmHg no grupo ES e 96.9 ± 7.1 mmHg no grupo controle; p OBJECTIVE: The aim of this prospective study was to establish the usefulness of indirect measurement of peripheral venous pressure (PVP in the evaluation of patients with systemic sclerosis (SSc, comparing them with a normal control population. METHODS: Eighteen female SSc patients (eight patients presenting cutaneous ischemic ulcers were submitted to indirect measurement of the PVP (by plethysmography, and data were compared with a control group of 18 healthy women, paired by age. RESULTS: Arterial pressure levels were similar in both groups. PVP levels were significantly decreased in the SSc patients (58.9 ± 11.6 mmHg in the SSc group and 96.9 ± 7.1 mmHg in the control group; p < 0.0001; in the SSc group, patients with ischemic ulcers presented PVP levels significantly decreased compared with those patients without ulcers (50.6 ± 10.8 mmHg in the ulcer group and 65.5 ± 7.2 mmHg in the group without ulcers; p = 0.006. CONCLUSIONS: It can be concluded that decreased PVP in SSc is associated with a decrease in the blood flow of these patients, predisposing them to cutaneous ischemic ulcers.

  6. Esclerose lateral amiotrófica variante distal dos membros inferiores apresentação de três casos

    OpenAIRE

    Godoy, J. M.; Skacel, M.; Balassiano, S. L.; Neves, J. R. M.; Goffredo Filho, G. S.; Castro, R. B. de; Nicaretta, D. H.; Souza, R. G. S.; Mendes, M. H. F.

    1991-01-01

    Os autores apresentam três casos de pacientes com esclerose lateral amiotrófica, variante de Patrikios, chamando a atenção para a importância do diagnóstico diferencial desta com as neuropatias periféricas. The, authors describe the neurological findings in ALS, Patrikios form, of three patients, calling attention for the differential diagnosis with peripheral neuropathies.

  7. Configurações do ativismo anti-aids na contemporaneidade Anti-aids activism in the contemporaneity

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    Maio Spellman Quirino de Farias

    2006-04-01

    Full Text Available Este artigo tem como objetivo apresentar as investigações acerca da atual prática do ativismo anti-aids entre os técnicos vinculados ao Grupo de Apoio à Vida (GAV, na cidade de Campina Grande/PB. Outros objetivos da investigação foram: identificar as concepções de ativismo anti-aids para técnicos e conhecer como esses atores sociais avaliam essas práticas atualmente realizadas pela ONG. O favorecimento ou não da criação de novas estratégias de ativismo, através do funcionamento do GAV, também foi investigado. A pesquisa teve início com visitas à instituição, no segundo semestre de 2004, na cidade de Campina Grande-PB, onde foram realizadas entrevistas - a partir de um roteiro semi-estruturado - com seis técnicos da referida entidade. Resultados iniciais da pesquisa indicam que a nova forma de ativismo está consubstanciada na execução de projetos e na inserção da ONG nos conselhos de representação social, mas a mobilização de rua precisa ser resgatada.This article has the objective to present the investigations concerning the current practice of anti-aids activism among the technicians linked to the Group of Support to Life (GSL, in Campina Grande, Paraiba State - Brazil. Other objectives of the investigation were: to identify the conceptions of anti-aids activism for technicians and to know how they evaluate those practices accomplished by the Non-Governmental Organization. The favoring or not on the creation of new strategies of activism, through the operation of GSL, was also investigated. The research started with visits to the institution, in the second semester of 2004, in the city of Campina Grande, where semi-structured interviews were accomplished with six volunteer technicians of the referred entity. Preliminary results indicate that the new form of activism is consubstantiated in the execution of projects and in the insertion of NOG in the social representation councils, but the street mobilization needs

  8. Envolvimento macrovascular e esclerose sistêmica Macrovascular involvement and systemic sclerosis

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    Emmanuelle Tenório Albuquerque Madruga Godoi

    2009-03-01

    Full Text Available Este artigo tem como objetivo revisar os aspectos descritos na literatura sobre o acometimento da macrovasculatura na esclerose sistêmica e avaliar a ocorrência e distribuição das alterações macrovasculares nos pacientes com esclerose sistêmica através do eco-Doppler e do índice tornozelo-braço, além da associação desses achados com as características demográficas, forma clínica, tempo de evolução da doença, fenômeno de Raynaud (FR, alterações digitais, ulcerações de membros, reabsorção de falange, amputação, bem como fatores de risco e antecedentes da doença ateromatosa. O estudo foi prospectivo, do tipo série de casos, constituído de 20 pacientes, sendo 19 do sexo feminino, com idade média de 46,30 anos. Todos os pacientes tinham fenômeno de Raynaud objetivo, 85% a forma clínica difusa, 55% alteração de polpa digital, 15% úlcera atual de membros, 25% reabsorção de falange, nenhuma amputação e 70% de um a quatro fatores de risco. Foram estudadas pelo eco-Doppler as artérias aorta e carótida, dos membros inferiores e superiores, para a avaliação de espessamento do complexo íntimo-medial e presença de placas e aneurismas. Nas artérias dos membros inferiores, foi também realizado o índice tornozelo-braço. O índice tornozelo-braço foi normal em todos os pacientes; entretanto, 12 (60% destes apresentaram doença macrovascular pelo eco-Doppler, sendo nove (45% na aorta, seis (30% nas carótidas, uma (5% nas artérias dos membros superiores e sete (35% nas dos membros inferiores. Observou-se associação entre doença macrovascular e alterações de polpas digitais (p = 0,0045. A doença macrovascular foi identificada em 60% dos pacientes através do eco-Doppler, mas não pelo índice tornozelo-braço, que foi normal em todos. Verificou-se associação significante da doença macrovascular com as alterações atuais de polpas digitais, o que não ocorreu com as demais variáveis estudadas

  9. Anestesia subaracnóidea para cesariana em paciente portadora de esclerose múltipla: relato de caso Anestesia subaracnoidea para cesárea en paciente portadora de esclerosis múltiple: relato de caso Subarachnoid anesthesia for cesarean section in a patient with multiple sclerosis: case report

    OpenAIRE

    Fabiano Timbó Barbosa; Ronaldson Correia Bernardo; Rafael Martins da Cunha; Maria do Socorro Melo Pedrosa

    2007-01-01

    JUSTIFICATIVA E OBJETIVOS: A esclerose múltipla é uma doença adquirida que se caracteriza por áreas desmielinizadas no encéfalo e na medula espinal. O quadro clínico depende das áreas anatômicas acometidas. As principais causas de morte são infecção, falência respiratória e estado de mal epiléptico. Ocorre em pacientes geneticamente predispostos após contato com fatores ambientais, principalmente os vírus. O objetivo desse relato foi apresentar a técnica anestésica adotada em paciente com esc...

  10. Papel da vitamina B12 na patogenia da mielose funicular

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    Horacio M. Canelas

    1965-12-01

    Full Text Available Foi estudada a absorção da vitamina B12 radioativa em 29 casos de mielose funicular. O diagnóstico baseou-se na clássica sintomatologia neu- rológica e na presença de acloridria gástrica e eventuais alterações hemato-lógicas. As manifestações neurológicas foram avaliadas de modo semiquan-titativo e correlacionadas com os resultados do teste de excreção urinária da vitamina B12. Não foi verificada correlação significante da absorção da vitamina B12, quer com a sintomatologia nuerológica total, quer com as síndromes periférica e funicular dorsal. Contudo, foi encontrada significante correlação negativa entre a síndrome piramidal e a absorção da vitamina B12. Os resultados são confrontados com o papel desempenhado pela vitamina B12 na síntese das bainhas de mielina e do ácido ribonuclêico, sendo salientada a importância dêste último para a vida das células nervosas e dos longos axônios.

  11. Biology of the repair of central nervous system demyelinated lesions: an appraisal Biologia da reparação de lesões desmielinizantes do sistema nervoso central: uma avaliação

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    L. A. V Peireira

    1996-06-01

    Full Text Available The integrity of myelin sheaths is maintained by oligodendrocytes and Schwann cells respectively in the central nervous system (CNS and in the peripheral nervous system. The process of demyelination consisting of the withdrawal of myelin sheaths from their axons is a characteristic feature of multiple sclerosis, the most common human demyelinating disease. Many experimental models have been designed to study the biology of demyelination and remyelination (repair of the lost myelin in the CNS, due to the difficulties in studying human material. In the ethidium bromide (an intercalating gliotoxic drug model of demyelination, CNS remyelination may be carried out by surviving oligodendrocytes and/or by cells differentiated from the primitive cell lines or either by Schwann cells that invade the CNS. However, some factors such as the age of the experimental animals, intensity and time of exposure to the intercalating chemical and the topography of the lesions have marked influence on the repair of the tissue.A integridade da bainha de mielina é fornecida pelos oligodendrócitos e pelas células de Schwann, no sistema nervoso central (SNC e no sistema nervoso periférico, respectivamente. O fenômeno de desmielinização refere-se à remoção das bainhas de mielina de axônios e este fato é característico na esclerose múltipla, a doença desmielinizante do SNC mais comum no homem. Muitos modelos experimentais têm sido utilizados para o estudo da biologia da desmielinização e remielinização no SNC, face à dificuldade de estudo de material humano. No modelo experimental da droga intercalate, gliotóxica, brometo de etídio, a remielinização do SNC pode ser efetuada por oligodendrócitos sobreviventes à lesão e/ou oriundos de diferenciação de linhagens celulares mais primitivas e por células de Schwann que invadem o SNC. No entanto, fatores como a idade dos animais, a intensidade, e o tempo de exposição ao agente intercalante e a

  12. Esclerose múltipla: estudo clínico de 50 pacientes acompanhados no Ambulatório de Neurologia UNIFESP-EPM

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    OLIVEIRA ENEDINA MARIA LOBATO DE

    1999-01-01

    Full Text Available Esclerose múltipla é doença que apresenta índice de baixa prevalência no Brasil. No entanto, a doença é similar àquela observada em outras regiões do globo, onde a doença é mais comum. São apresentados 50 casos de esclerose múltipla, classificados de acordo com os critérios internacionais. A série estudada apresenta características epidemiológicas semelhantes às séries internacionais, em que se observa acometimento maior de adultos jovens do sexo feminino, preferencialmente. Os sinais e sintomas mais comuns foram piramidais e cerebelares, sendo pouco frequente o acometimento visual. A forma clínica mais comum foi surto-remissiva. O número de surtos, o tempo de evolução da doença, o tipo de comprometimento piramidal e a presença de sinais cerebelares no início do quadro foram os fatores determinantes da incapacidade funcional dos pacientes, refletida por valores mais altos de EDSS. A ressonância magnética de crânio, realizada em 22 pacientes mostrou alterações de substância branca, compatível com doença desmielinizante. Não foi observada relação entre o quadro clínico e o grau de comprometimento evidenciado pelo exame.

  13. Musical identity of patients with multiple sclerosis Identidade musical em pacientes com esclerose múltipla

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    Shirlene Vianna Moreira

    2009-03-01

    Full Text Available Musical autobiographies consist of a powerful therapeutic tool by which individuals define themselves. The use of this technique may help (reconstruction personal identities and improve quality of life of patients with multiple sclerosis (MS. Eight adult patients on treatment at CIEM Multiple Sclerosis Investigation Center after selecting 10 to 15 pieces of music most significant in their lives were interviewed. The data collected were classified according to Even Rudd categories, which reveal how a person expresses his personal, social, temporal and transpersonal identities. We observed that recall of musical history makes MS patients get better perception both of their feelings and body awareness, as well as provide them with an alternative way to express themselves, activate and contextualize affective memories, and achieving a sense of life continuity in spite of the disease.Autobiografias musicais constituem um recurso terapêutico pelo qual indivíduos definem a si mesmos, auxiliando a (reconstrução da identidade e contribuindo para a melhora da qualidade de vida de portadores de esclerose múltipla (EM. Oito pacientes adultos sob acompanhamento no Centro de Investigação em esclerose múltipla (CIEM da UFMG, selecionaram entre 10 e 15 músicas significativas em sua vida, a respeito das quais discorreram em entrevista aberta. Os dados foram analisados qualitativamente segundo categorias criadas por Even Rudd, que visam revelar como o indivíduo expressa suas identidades pessoal, social, temporal e transpessoal. Submetidos a tratamento quantitativo, os dados demonstraram que, através da sua história musical, os pacientes aumentaram a percepção dos sentimentos e sensações corporais, expressaram-se de maneiras alternativas e ativaram memórias afetivas, contextualizando-as e adquirindo um senso de continuidade da vida.

  14. Effectiveness of adalimumab for the treatment of ulcerative colitis in clinical practice: comparison between anti-tumour necrosis factor-naïve and non-naïve patients.

    Science.gov (United States)

    Iborra, Marisa; Pérez-Gisbert, Javier; Bosca-Watts, Marta Maia; López-García, Alicia; García-Sánchez, Valle; López-Sanromán, Antonio; Hinojosa, Esther; Márquez, Lucía; García-López, Santiago; Chaparro, María; Aceituno, Montserrat; Calafat, Margalida; Guardiola, Jordi; Belloc, Blanca; Ber, Yolanda; Bujanda, Luis; Beltrán, Belén; Rodríguez-Gutiérrez, Cristina; Barrio, Jesús; Cabriada, José Luis; Rivero, Montserrat; Camargo, Raquel; van Domselaar, Manuel; Villoria, Albert; Schuterman, Hugo Salata; Hervás, David; Nos, Pilar

    2017-07-01

    Ulcerative colitis (UC) treatment is focused to achieve mucosal healing, avoiding disease progression. The study aimed to evaluate the real-world effectiveness of adalimumab (ADA) in UC and to identify predictors of remission to ADA. This cohort study used data from the ENEIDA registry. Clinical response, clinical remission, endoscopic remission, adverse events (AE), colectomy, and hospitalisations were evaluated; baseline characteristics and biological parameters were compared to determine predictors of response. We included 263 patients (87 naïve and 176 previously exposed to anti-tumour necrosis factor alpha, TNF). After 12 weeks, clinical response, clinical remission, and endoscopic remission rates were 51, 26, and 14 %, respectively. The naïve group demonstrated better response to treatment than the anti-TNF-exposed group at short-term. Clinical and endoscopic remission within 1 year of treatment was better in the naïve group (65 vs. 49 and 50 vs. 35 %, respectively). The rates of AE, dose-escalation, hospitalisations, and colectomy during the first year were higher in anti-TNF-exposed patients (40, 43, and 27 % vs. 26, 21, and 11 %, respectively). Patients with primary failure and intolerance to the first anti-TNF and severe disease were associated with worse clinical response. Primary non-response to prior anti-TNF treatment and severe disease were predictive of poorer clinical remission. Low levels of C-reactive protein (CRP) and faecal calprotectin (FC) at baseline were predictors of clinical remission. In clinical practice, ADA was effective in UC, especially in anti-TNF naïve patients. FC and CRP could be predictors of treatment effectiveness.

  15. Anestesia subaracnóidea para cesariana em paciente portadora de esclerose múltipla: relato de caso Anestesia subaracnoidea para cesárea en paciente portadora de esclerosis múltiple: relato de caso Subarachnoid anesthesia for cesarean section in a patient with multiple sclerosis: case report

    Directory of Open Access Journals (Sweden)

    Fabiano Timbó Barbosa

    2007-06-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A esclerose múltipla é uma doença adquirida que se caracteriza por áreas desmielinizadas no encéfalo e na medula espinal. O quadro clínico depende das áreas anatômicas acometidas. As principais causas de morte são infecção, falência respiratória e estado de mal epiléptico. Ocorre em pacientes geneticamente predispostos após contato com fatores ambientais, principalmente os vírus. O objetivo desse relato foi apresentar a técnica anestésica adotada em paciente com esclerose múltipla submetida à cesariana. RELATO DO CASO: Paciente com 32 anos, 60 kg, portadora de esclerose múltipla, tratada com metilprednisolona, deu entrada no centro obstétrico para realização de cesariana. Após monitoração foi realizada anestesia subaracnóidea com bupivacaína a 0,5% hiperbárica (12,5 mg associada à morfina (0,1 mg. O procedimento evoluiu sem intercorrências e a paciente recebeu alta hospitalar 48 horas após o parto sem piora dos sintomas preexistentes. CONCLUSÕES: O presente caso sugere que a raquianestesia pode ser administrada em paciente portador de esclerose múltipla sem a ocorrência obrigatória de exacerbações agudas dos sintomas no período pós-operatório.JUSTIFICATIVA Y OBJETIVOS: La esclerosis múltiple es una enfermedad adquirida que se caracteriza por áreas desmielinizadas en el encéfalo y en la médula espinal. El cuadro clínico depende de las áreas anatómicas acometidas. Las principales causas de muerte son infección, falencia respiratoria y estado de mal epiléptico. Ocurre en pacientes genéticamente predispuestos después del contacto con factores ambientales, principalmente los virus. El objetivo de este relato fue presentar la técnica anestésica adoptada en paciente con esclerosis múltiple sometida a cesárea. RELATO DEL CASO: Paciente con 32 anos, 60 kg, portadora de esclerosis múltiple, tratada con metilprednisolona, entró en el centro obstétrico para realizaci

  16. Benefit with methylprednisolone in continuous pulsetherapy in progressive primary form of multiple sclerosis: study of 11 cases in 11 years Benefício do uso de pulsoterapia contínua com metilprednisolona na forma primária progressiva da esclerose múltipla: estudo de 11 casos em 11 anos

    Directory of Open Access Journals (Sweden)

    Edmar A.S. de Araújo

    2008-06-01

    Full Text Available Primary progressive multiple sclerosis (PPMS is defined clinically with a progressive course from onset. There is no approved treatment for the PPMS. Methylprednisolone IV (MP hastens the recovery from MS relapses. We studied 11 patients that met the MacDonald's diagnostic criteria for PPMS. The dose of MP was 30 mg/kg in 250 mL of glucose solution in three consecutive days during the first week, two doses during the second and one dose in the third week. One weekly session for eight consecutive weeks was given. After, a once-a week/eight-week interval was maintained. The medium EDSS before treatment was 6.2, and after 11.2 years of treatment, the EDSS was 4.9. Although we studied a small sample of PPMS we may conclude that therapy with IVMP prevents clinical worsening of MS in the majority of patients with improvement in EDSS scores.A forma progressiva da esclerose múltipla (FPEM é definida como progressiva desde o início. Não há tratamento eficaz para esta forma. A metilprednisolona por via endovenosa (MPEV é usada para os surtos de exacerbação da EM. Estudamos 11 pacientes que preenchiam os critérios de MacDonald para FPMS. A dose inicial de MPEV foi de 30 mg/kg em 250 mL de soro glicosado por três dias consecutivos na primeira semana, duas doses na segunda e uma dose na terceira semana. Seguiu-se uma sessão semanal por oito semanas. Após manteve-se uma dose semanal a cada oito semanas. A média do EDDS foi 9,6 antes e 4,9 após 11,2 anos de tratamento. Embora tenhamos estudado número reduzido de casos, podemos dizer que o uso de MPEV impede a progressão da FPEM na maioria dos pacientes estudados com melhora do EDDS.

  17. Aiming for a precise measurement of K{sup +} → π{sup +}ν anti ν. The start of the NA62 experiment

    Energy Technology Data Exchange (ETDEWEB)

    Khoriauli, Gia [Johannes Gutenberg University Mainz (Germany); Collaboration: NA62-Collaboration

    2016-07-01

    NA62 is a fixed target experiment at CERN. The main goal of the experiment is to measure precisely the rare Kaon decay K{sup +} → π{sup +} anti νν. Kaons are produced together with other particles by hitting a Beryllium target with a 400 GeV/c proton beam supplied by the CERN SPS. A secondary Kaon beam with 75 GeV/c (± 1%) momentum and signal events are selected with the NA62 detector. K{sup +} → π{sup +} anti νν is an extremely interesting decay, since its tiny branching ratio is precisely known in the Standard Model. Therefore, this decay is sensitive to possible new physics phenomena, which can alter its branching ratio. As a FCNC interaction, the decay is forbidden at the tree level in the Standard Model. The most recent theoretical calculation provides BR(K{sup +} → π{sup +} anti νν)=(9.11 ± 0.72) . 10{sup -11} with the uncertainty stemming mostly from the knowledge on vertical stroke V{sub ts} vertical stroke. The NA62 experiment aims to test the Standard Model expectation by reaching an uncertainty of 10% in BR(K{sup +} → π{sup +}ν anti ν). NA62 collected first data during a pilot run in 2014. The first physics run took place in 2015. Important steps have been made in understanding and optimization of the performance of the NA62 sub-detectors and the physics triggers during the physics run 2015. First preliminary physics results as well as the theory framework and the NA62 detector are presented in this work.

  18. Consenso expandido do BCTRIMS para o tratamento da esclerose múltipla: III. Diretrizes baseadas em evidências e recomendações

    Directory of Open Access Journals (Sweden)

    Lana-Peixoto Marco Aurélio

    2002-01-01

    Full Text Available Em razão dos avanços no conhecimento da esclerose múltipla (EM, dos novos critérios diagnósticos e ensaios terapêuticos publicados, a atualização e expansão das diretrizes para orientação do neurologista brasileiro em relação ao tratamento da EM se tornam necessárias. O Consenso Expandido do BCTRIMS enfatiza a individualização do tratamento a critério do neurologista, e a necessidade de informação do paciente quanto aos potenciais benefícios e riscos das drogas, assim como do Consentimento Informado e compromisso de realização de controles periódicos. Na ausência de evidências científicas favorecendo uma determinada droga o médico deve considerar o custo diferencial dos imunomoduladores ao fazer sua opção terapêutica. As várias situações clínicas e os diferentes agentes modificadores da doença, assim como as outras intervenções terapêuticas de eficácia no tratamento são consideradas à luz das classes de evidências científicas e dos tipos de recomendação, aceitos pela comunidade científica internacional. O Consenso Expandido do BCTRIMS pode servir de modelo para outros países em desenvolvimento.

  19. Esclerose sistêmica difusa com hipertensão pulmonar isolada: relato de caso Diffuse systemic sclerosis with isolated pulmonary hypertension: a case report

    Directory of Open Access Journals (Sweden)

    SILMÉIA GARCIA ZANATI

    2000-12-01

    Full Text Available A esclerose sistêmica (ES é uma doença incomum, caracterizada por alterações vasculares e fibrose em pele e vários órgãos. O envolvimento pulmonar é freqüente na ES; entretanto, hipertensão pulmonar (HP na ausência de fibrose intersticial é raramente observada. Os autores descrevem um caso de ES difusa com HP isolada em paciente do sexo feminino, de 49 anos. O diagnóstico de HP pôde ser sugerido pelo exame físico e confirmado por ecodopplercardiograma, que permitiu estimar a pressão sistólica em artéria pulmonar em 80mmHg. Tratamento foi iniciado com nifedipina; entretanto, devido a efeitos colaterais da droga, não foi possível o aumento da dose além de 30mg ao dia; nesta dosagem, a nifedipina não acarretou redução da pressão arterial pulmonar.Systemic sclerosis (SS is an uncommon disease characterized by small blood vessel vasculopathy and increased connective tissue in the skin and in other organs. The pulmonary involvement is common in SS; however, pulmonary hypertension without interstitial fibrosis is rare. The authors present a case of the diffuse form of SS with isolated pulmonary hypertension. The diagnosis of pulmonary hypertension was suggested by physical examination and confirmed by doppler-echocardiography which allowed for the estimation of the pulmonary artery systolic pressure in 80 mmHg. The authors started treatment with nifedipine; however, as the patient presented side effects, it was not possible to increase the dose beyond 30 mg/day. In this dosage, nifedipine did not decrease the pulmonary arterial pressure.

  20. Cognitive performance of neuromyelitis optica patients: comparison with multiple sclerosis Desempenho cognitivo de pacientes com neuromielite óptica: comparação com esclerose múltipla

    Directory of Open Access Journals (Sweden)

    Sandra Vanotti

    2013-06-01

    Full Text Available The aim of the present research was to investigate cognitive pattern of patients with neuromyelitis optica (NMO and to compare it with multiple sclerosis (MS patients' performance. Methods: Fourteen NMO, 14 relapsing remitting multiple sclerosis (RRMS, and 14 healthy control patients participated in the investigation. Neuropsychological functions were evaluated with the Brief Repeatable Neuropsychological Battery for MS; Symbol Digit Modalities Test; Digit Span; and Semantic Fluency. Results: Fifty-seven percent of NMO patients and 42.85% of the MS ones had abnormal performance in at least two cognitive tests. The NMO Group showed abnormal performance in verbal fluency, verbal and visual memories, with greater attention deficits. NMO patients outperformed healthy control in the paced auditory serial addition test (PASAT. However, no difference was found between NMO and RRMS patients. Conclusions: The NMO Group showed more dysfunction in attention and verbal fluencies than in verbal and visual memories. When compared with the MS patients, a similar dysfunction pattern was found. O objetivo da presente pesquisa foi investigar o padrão cognitivo de pacientes com neuromielite óptica (NMO e compará-lo com o desempenho de pacientes com esclerose múltipla (EM. Métodos: Quatorze pacientes com NMO, 14 com esclerose múltipla recorrente remitente (EMRR e 14 participantes do Controle saudáveis participaram da presente investigação. As funções neuropsicológicas foram avaliadas com a Bateria Breve de Testes Neuropsicológicos de Rao, Teste Símbolo Digit e a Fluência Semântica. Resultados: Cinquenta e sete por cento dos pacientes com NMO e 42,85% daqueles com EM apresentaram desempenho anormal em pelo menos dois testes cognitivos. O Grupo NMO apresentarou desempenho anormal na fluência verbal e nas memórias visual e verbal, com maiores déficits de atenção. Pacientes com NMO superaram os controles saudáveis em PASAT. No entanto, não foi

  1. Immunomodulator therapy migration in relapsing remitting multiple sclerosis: a study of 152 cases Migração medicamentosa de imunomoduladores em esclerose múltipla: estudo em 152 pacientes

    Directory of Open Access Journals (Sweden)

    Sergio Semeraro Jordy

    2008-03-01

    Full Text Available BACKGROUND: Since 1997, immunological modulators have been used for treatment of Relapsing Remitting Multiple Sclerosis (RRMS in the Multiple Sclerosis Attendance and Treatment Center (CATEM with significant alterations in this disease natural history. AIM: To add data on the experience of CATEM for the treatment of RRMS patients that had immunomodulators. METHOD: RRMS patients that received continuously immunomodulator drugs were evaluated on adherence, migration, withdrawal and progression rates. The patients were divided in three groups by the period of immunomodulators intake. RESULTS: There were registered in Group 1 withdrawal in 98 patients (25% and adherence in 292 cases (74%; Group 2 interruption of therapy in 140 patients, 92 (31% due to progression for PSMS, 14 (5% for pregnancy, withdrawal in 34 (11%, adherence in 88%; Group 3 progression in 41 (26%, pregnancy in 3 (2% withdrawal in 42 (27% and adherence in 72%. The migration rate was about one third (31.57% and the principal cause was therapeutic failure; the mean migrating time was 0.5-2.5 years in group 3. CONCLUSION: Immunomodulatory treatment for RRMS patients may have significant levels of failure and side effects; the adherence was compatible with the international literature.INTRODUÇÃO: Na última década foram introduzidos os imunomoduladores para o tratamento da esclerose múltipla (EM forma remitente-recorrente (RR. OBJETIVO: Complementar o relato anterior da experiência de centro brasileiro no acompanhamento dos pacientes em uso dos imunomoduladores. MÉTODO: 390 pacientes que faziam uso de imunomoduladores no Centro de Atendimento à Esclerose Múltipla (CATEM, foram subdivididos por tempo de uso em três grupos, avaliando-se as ocorrências de: abandono, gravidez, conversão da forma RR para secundária progressiva (SP e da aderência. RESULTADOS: No Grupo 1, foram observados abandono do uso de imunomoduladores em 98 pacientes (25% e aderência de 292 casos (74%; no

  2. Aglutinina anti-T (Thomsen-Friedenreich na doença de Chagas

    Directory of Open Access Journals (Sweden)

    Marcos Palatnik

    1986-10-01

    Full Text Available Uma amostra de soros de pacientes e controles de uma área endêmica da Doença de Chagas do País foi titulada contra hemácias de grupo O tratadas pela neuraminidase (células OT ativadas e hemacias normais de grupo A e B (sistema ABO. Também foram feitos alguns testes de aglutinação de hemácias de pacientes com cardiomiopatia com as lectinas de amendoim (anti-T + anti-Tk e com anticorpo humano anti-T. O escore médio da aglutinina anti-T dos pacientes foi similar ao do grupo controle. En- tretanto, o escore médio dos indivíduos com a forma cardíaca íoi significantemente maior que o dos pacientes assintomáticos e também maior que o do grupo controle. A comparação entre indivíduos com sorologia diagnóstica positiva versus negativa foi não significante. Nem a sorologia para Chagas nem as variáveis raça, sexo, idade, idade ao quadrado, in-fecção intestinal parasitária, teor de proteínas do soro, volume globular eritrocitário (hema-tócrito, grau de palidez da mucosa bucal, cardíomiopatia e os termos de interação sexo x idade, sexo x idade ao quadrado, estão associados significativamente com o logaritmo do título ou com o logaritmo do escore de aglutinação. Os escores de aglutinação das aglutininas anti-A e anti-B do sistema de grupo sangüíneo ABO estão dentro da faixa de variação normal. As hemácias de pacientes com a forma cardíaca não são aglutinadas nem pelas lectinas de amendoim (antiT + anti-Tk e da soja (anti-T nem pela aglutinina anti-T de origem humana. A prova de Coombs direta foi negativa em todos os pacientes, demonstrando a aparente ausência de imunoglobulinas IgG e IgM na superfície eritrocitária. O fato de que o aumento dos níveis de anti-T só foi detectado em uma das formas clínicas da doença em pacientes da mesma área endêmica constitui um argumento contra a possibilidade de que a variação observada seja produzida por uma infecção concomitante.

  3. Deuteron and anti-deuteron production in CERN experiment NA44

    International Nuclear Information System (INIS)

    Simon-Gillo, J.

    1995-01-01

    The abundances of light nuclei probe the later stages of the evolution of a system formed in a relativistic heavy-ion collision. After the system has cooled and expanded, nucleons in close proximity and moving with small relative momenta coalesce to form nuclei. Light nuclei production enables the study of several topics, including the mechanism of composite particle production, freeze-out temperature, size of the interaction region, and entropy of the system. NA44 is the only relativistic heavy-ion experiment to have both deuteron and anti-deuteron results in both pA and AA collisions and the first CERN experiment to study the physics topics addressed by d and bar d production

  4. Insuficiência respiratória aguda como primeira manifestação de esclerose lateral amiotrófica: dois casos clínicos

    Directory of Open Access Journals (Sweden)

    Susana Moreira

    2004-11-01

    Full Text Available RESUMO: A esclerose lateral amiotrófica (ELA é uma doença neuromuscular rapidamente progressiva que envolve todos os grupos musculares com excepção dos músculos extra-oculares e dos esfíncteres. A maior causa de morbilidade e mortalidade são as complicações respiratórias que surgem habitualmente numa fase tardia da história natural da doença. Num número reduzido de casos, a ELA tem como manifestação inicial a insuficiência respiratória aguda.Os autores apresentam 2 casos clínicos de doentes internados num Serviço de pneumologia, sem doença neuromuscular prévia conhecida, com o diagnóstico de insuficiência respiratória aguda de etiologia desconhecida e que se revelaram ser ELA.A análise dos casos discutidos, e dos que estão já publicados na literatura, sugere que o aparecimento de insuficiência respiratória aguda em doentes sem história prévia de patologia pulmonar e/ou cardíaca, especialmente na 5.ª e 6.ª décadas de vida, deve alertar para a ELA como hipótese diagnóstica.REV PORT PNEUMOL 2004; X (6: 499-504 ABSTRACT: Amyotrophic lateral sclerosis (ALS is a fast progressing neuromuscular disease that affects all but the extrinsic muscles of the eye and sphincters. The main cause of morbidity and mortality are the respiratory complications that usually start in a late stage of the disease’s natural history. In a small number of cases acute respiratory failure is the initial manifestation of the disease.The authors present 2 case studies admitted to a pulmonary department, without previously known neuromuscular disease, with the diagnosis of acute respiratory failure of unknown ethiology and that were later shown to be cases of ALS.Analysis of the cases presented here, and those already published in the literature, suggests that the occurrence of acute respiratory failure in patients without a previous history of pulmonary and

  5. Lesões Ósseas de Novo: Quando a Origem Não é a Mais Evidente

    Directory of Open Access Journals (Sweden)

    Marta Vaz Batista

    2017-09-01

    dúvida diagnóstica de qual a doença primária que está na base destas alterações. Conclui-se tratar-se de envolvimento ósseo da esclerose sistémica que, apesar de raro na localização onde surgiu, se encontra descrito na literatura. Recebido: 12/07/2017 - Aceite: 05/09/2017

  6. Erupção acneiforme aguda induzida por interferon beta-1b durante tratamento para esclerose múltipla Acute acneiform eruption induced by interferon beta-1b during treatment for multiple sclerosis

    Directory of Open Access Journals (Sweden)

    Dário Júnior de Freitas Rosa

    2011-04-01

    Full Text Available Esclerose múltipla é uma doença inflamatória desmielinizante, com presumida origem autoimune, que afeta o sistema nervoso central. A principal modalidade terapêutica é baseada no uso de imunomoduladores, como o interferon beta, que são geralmente bem tolerados. As manifestações cutâneas secundárias ao interferon beta-1b são representadas, na maioria das vezes, por reações no local de sua aplicação subcutânea. Descrevemos o caso de uma paciente do sexo feminino que desenvolveu um quadro de erupção acneiforme pelo interferon beta-1b.Multiple sclerosis is an inflammatory demyelinating disease of presumed autoimmune origin that affects the central nervous system. The main form of therapy is based on the use of immunomodulators such as interferon beta, which are usually well tolerated. Skin manifestations resulting from treatment with interferon beta-1b consist principally of reactions at the site of subcutaneous application of the drug. The present case report describes a female patient who developed an acneiform eruption resulting from treatment with interferon beta-1b.

  7. Música e Identidade: relatos de autobiografias musicais em pacientes com esclerose múltipla Music and identity: musical autobiographies in multiple sclerosis patients

    Directory of Open Access Journals (Sweden)

    Cecilia Cavalieri França

    2009-01-01

    Full Text Available Autobiografias musicais constituem um recurso terapêutico eloqüente a respeito de como os indivíduos definem a si mesmos, auxiliando a (reconstrução da identidade e contribuindo para a melhoria da qualidade de vida de portadores de Esclerose Múltipla. Oito pacientes adultos sob acompanhamento no Centro de Investigação em Esclerose Múltipla (CIEM - UFMG, selecionaram entre 10 a 15 músicas significativas em sua vida, a respeito das quais discorreram em entrevista aberta. Os dados foram analisados qualitativamente segundo categorias criadas pelo musicoterapeuta norueguês Even RUDD (1998, que visam revelar como o indivíduo expressa suas identidades pessoal, social, temporal e transpessoal. Submetidos a tratamento quantitativo, os dados indicaram que, através da sua história musical, os pacientes aumentaram a percepção dos sentimentos e sensações corporais, expressaram-se de maneiras alternativas e ativaram memórias afetivas, contextualizando-as e adquirindo um senso de continuidade da vida.Musical autobiographies consist a powerful therapeutic tool through which individuals define themselves, helping in the (reconstruction of their identities and in enhancing quality of life of Multiple Sclerosis patients. Eight adult patients under treatment in the Research Centre for Multiple Sclerosis (CIEM - UFMG, selected 10 to 15 significant pieces of music in their lives, after which they narrated in open interview. The data collected were submitted to the music therapist Even RUDD (1998 categories, which reveal how the person expresses his personal, social, temporal and transpersonal identities. The quantitative treatment indicate that, through their musical history, patients could better the perception of their feelings and body awareness, they could express themselves through alternative ways and activated affective memories, contextualizing them and achieving a sense of continuity of life.

  8. Aplicação de toxina botulínica tipo A para reduzir a saliva em pacientes com esclerose lateral amiotrófica Application of botulinum toxin to reduce the saliva in patients with amyotrophic lateral sclerosis

    Directory of Open Access Journals (Sweden)

    Dayse Manrique

    2005-10-01

    Full Text Available OBJETIVO: Demonstrar o efeito da aplicação local Botox® em glândulas salivares de pacientes com diagnóstico de esclerose lateral amiotrófica (ELA, seguindo nosso protocolo institucional de tratamento da sialorréia de 2002. FORMA DE ESTUDO: Clínico prospectivo. MATERIAL E MÉTODO: Cinco pacientes com ELA avaliados na Clínica de Otorrinolaringologia da AACD (Associação de Assistência à Criança Deficiente foram submetidos à aplicação tópica de Botox® nas glândulas salivares e acompanhados por um ano. O protocolo consiste num questionário clínico sobre as habilidades de deglutir saliva e as repercussões na qualidade de vida. Os pacientes deveriam ter tratamento odontológico prévio, intolerância aos efeitos adversos dos anti-colinérgicos, e ausência de aplicação de. Botox® em outros sítios por pelo menos seis meses. A aplicação foi guiada por ultra-sonografia para as glândulas submandibulares e a dose administrada foi de 30U em um ponto, e 20U em cada glândula parótida distribuída em dois pontos, após anestesia tópica com prilocaína. RESULTADOS: Cinco pacientes com ELA, com idade entre 45 e 59 anos foram submetidos ao tratamento de redução de saliva pela aplicação de Botox® em glândulas salivares. Nós observamos que os sintomas de sialorréia melhoraram dramaticamente em quatro pacientes. Três pacientes permaneceram quatro meses sem queixas, com acentuada melhora na qualidade de vida. Nenhum paciente apresentou efeitos colaterais locais ou sistêmicos com a aplicação de Botox® em glândulas salivares. Nós observamos que os sintomas de sialorréia melhoraram dramaticamente em quatro pacientes. Três pacientes permaneceram quatro meses sem queixas, com acentuada melhora na qualidade de vida. Nenhum paciente apresentou efeitos colaterais locais ou sistêmicos com a aplicação de Botox® em glândulas salivares.AIM: To demonstrate the effect of local application of Botox® in patients with amyotrophic

  9. Relação entre Otimismo e Autonomia Funcional em indivíduos com Esclerose Múltipla

    Directory of Open Access Journals (Sweden)

    Luísa Pedro

    2012-07-01

    Full Text Available Objetivo: O presente estudo tem como objetivo verificar a relação existente entre autonomia funcional e otimismo. Método: Os participantes são 280 indivíduos portadores de esclerose múltipla (EM diagnosticada há mais de um ano em que a maioria são mulheres, com nível elevado de escolaridade, maioritariamente casados, e a trabalhar em regime de tempo integral. A funcionalidade foi avaliada com a Escala de Impacto de Participação e Autonomia – IPA, e o otimismo com o Life Orientation Test – Revised (LOT-R. A recolha de dados realizou-se em unidades de saúde de Lisboa e cumpriu as regras conforme a Declaração de Helsínquia. Conclusão: Os resultados mostram que existem valores de correlação estatisticamente significativos, mas moderados entre as dimensões da LOT-R e IPA, sugerindo que o otimismo é um fator importante para a autonomia funcional dos indivíduos portadores de EM.

  10. Hydrogen sulfide protects neonatal rat medulla oblongata against prenatal cigarette smoke exposure via anti-oxidative and anti-inflammatory effects.

    Science.gov (United States)

    Yan, Xiang; Lei, Fang; Hu, Yajie; Nie, Lihong; Jia, Qingyi; Zhou, Hua; Zhao, Fusheng; Zheng, Yu

    2018-01-01

    We previously demonstrated that hydrogen sulfide (H 2 S) protected neonatal rat medulla oblongata from prenatal cigarette smoke exposure (CSE) via anti-apoptotic effect. The present work further investigated the involvement of anti-oxidative and anti-inflammatory effects of H 2 S in the protection. Pregnant Sprague-Dawley rats were randomly divided into NaCl, CSE, CSE + NaHS (a donor of H 2 S) and NaHS groups. All the tests were performed with corresponding neonatal rats. Nissl staining revealed that NaHS treatment ameliorated neuronal chromatolysis in the hypoglossal nucleus and nucleus ambiguus resulted from prenatal CSE. Moreover, NaHS eliminated decrease of glutathione level, increase of malondialdehyde content and inhibition of superoxide dismutase activity within neonatal rat medulla oblongata caused by prenatal CSE. NaHS also relieved the up-regulation of tumor necrosis factor-α, interleukin-1β and interleukin-6 in the medulla oblongata of the neonatal CSE rats. These results suggest that H 2 S can alleviate prenatal CSE-induced injuries of neonatal rat medulla oblongata through anti-oxidative and anti-inflammatory effects. Copyright © 2017 Elsevier B.V. All rights reserved.

  11. Influence of treatment in multiple sclerosis dysability: an open, retrospective, non-randomized long-term analysis Influência do tratamento na incapacidade da esclerose múltipla: estudo aberto, retrospectivo e não randomizado em longo prazo

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    Lineu Cesar Werneck

    2010-08-01

    , no statistical difference was found in the long-term progression of disability among the IMS and IMM treated cases, nor in the cases treated only with corticosteroids.A eficácia das medicações imunossupressivas (IMS e imunomoduladoras (IMM na esclerose múltipla (MS tem sido relatada em diversos estudos. Essas medicações podem reduzir o número de surtos e de lesões observadas nos estudos de ressonância magnética. Entretanto, o efeito dessas medicações na progressão da incapacidade em período acima de quatro anos é raramente estudado. OBJETIVO: Estudar a incapacidade associada à MS em longo prazo e analisar os benefícios dos diferentes tipos de tratamento na progressão da doença. MÉTODO: Estudo aberto e retrospectivo da progressão da incapacidade utilizando a escala expandida do grau de incapacidade (EDSS e o escore da gravidade da esclerose múltipla (MSSS em 155 casos de MS, sendo 76% do sexo feminino, idade média no início da doença 30,21±9,70 anos e período médio de seguimento 115,39±77,08, mediana 92 (3 a 447 meses. Os casos foram submetidos a 277 tipos diferentes de tratamentos: 62 casos não usaram IMS ou IMM, somente corticosteróides (SYT; 53 com azatioprina (AZA; 53 com interferon-β (IFNβ-1b 250 µg (BET; 55 com IFNβ-1a 22 µg (R22; 19 com IFNβ-1a 30 µg (AVO; 15 com IFNβ-1a 44 µg (R44; 15 com acetato de glatiramer (COP 20 mg, e 5 casos com mitoxantrone (MIT. RESULTADOS: A mediana do EDSS do grupo foi 2,0 (0 a 5,5, média total do grupo foi 1,89±1,52 no início de cada tratamento e 2,50 (0 a 9, média de 3,06±2,18 no fim. A mediana inicial da MSSS foi 3,34 (0,25 a 9,50, média 3,94±2,91 e a final 3,90 (0,05 a 9,88, média 4,02±2,78. O EDSS entre o início e o fim do tratamento do grupo mostrou progressão estatisticamente significante e também para os subgrupos SYT, AZA, BET e R22. Não foi encontrada diferença estatística no MSSS entre o início e fim do tratamento no grupo total ou nos subgrupos. Não foi encontrada

  12. The value of csf analysis for the differential diagnosis of HTLV-I associated myelopathy and multiple sclerosis Valor da análise do LCR para o diagnóstico diferencial de mielopatia associada ao HTLV-I e esclerose múltipla

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    Marzia Puccioni-Sohler

    1995-12-01

    Full Text Available Cerebrospinal fluid (CSF and serum of 17 patients with HAM/TSP (HTLV-I associated myelopathy/ tropical spastic paraparesis, six with multiple sclerosis and six with idiopathic epilepsy (non inflammatory control from Brazil were analysed for the presence of intrathecal synthesis of virus-specific antibodies against measles, rubella, varicella zoster virus and herpes simplex virus by enzyme-linked immunosorbent assay (ELISA. All HAM/TSP and multiple sclerosis cases had an intrathecal immune response (oligoclonal IgG. In HAM/TSP, only 1/17 case showed a polyspecific intrathecal immune response against measles and rubella virus. In multiple sclerosis, specific antibodies against measles and rubella (MRZ response were observed in all patients but not in the control with idiopathic epilepsy. The diagnostic and theoretical relevance of mono- and polyspecific immune responses is discussed for these chronic neurological diseases.Amostras de líquido cefalorraquidiano (LCR e soro de 17 pacientes brasileiros com HAM/TSP, seis com esclerose múltipla e seis com epilepsia idiopática (controle não-inflamatório foram analisadas para a presença de anticorpos para os vírus do sarampo, rubéola, varicela zoster e herpes simples pelo método de ELISA. Todos os casos de HAM/TSP e esclerose múltipla tinham resposta imune intratecal (IgG oligoclonal. Somente 1/17 casos de HAM/TSP apresentavam resposta imune poliespecifica intratecal para sarampo e rubéola. Anticorpos específicos para sarampo e rubeola (resposta MRZ foram observados em todos os pacientes com esclerose múltipla, mas não nos controles com epilepsia idiopática. A relevância das respostas poliespecifica e monoespecifica é discutida para essas doenças neurológicas crônicas.

  13. Alterações neurorradiológicas cerebrais na degeneração combinada de medula: relato de caso

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    SILVA MARCUS TULIUS TEIXEIRA DA

    2000-01-01

    Full Text Available A carência da vitamina B12 em muitas situações manifesta-se também por alterações neuropsiquiátricas, sendo a mais comum a degeneração combinada subaguda da medula espinhal. No sistema nervoso central a repercussão maior é na mielina, sendo a degeneração esponjosa e a desmielinização difusa das colunas lateral e posterior da medula as mais típicas alterações patológicas. O mesmo ocorre nos hemisférios cerebrais, sendo que anormalidades nas imagens por ressonância magnética são esperadas. No entanto muito pouco tem sido relatado e a carência da cobalamina não figura habitualmente na lista de diagnósticos diferenciais de lesões desmielinizantes. Relatamos caso de anemia perniciosa com manifestações neurológicas em que a ressonância magnética mostrou alterações compatíveis com desmielinização do feixe piramidal, consequentes, possivelmente, à carência da vitamina B12. Discutimos os achados neuropatológicos da hipovitaminose. Sugerimos que a degeneração combinada subaguda da medula deve fazer parte do diagnóstico diferencial radiológico das lesões desmielinizantes no sistema nervoso central.

  14. Mitoxantrone in secondarily progressive multiple sclerosis: a series of 18 patients Mitoxantrone na esclerose múltipla secundária progressiva relato de 18 casos

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    María Belén Montú

    2005-06-01

    Full Text Available Mitoxantrone hydrochloride (Novantrone® is an anthracenedione that has been used as one of the latest in a long line of general immunosuppresive agents studied in multiple sclerosis (MS. We reviewed the clinical, laboratory, neuroimaging and echocardiography data of 18 patients from February 2001 to March 2004 out of a total number of 100 patients with definite MS. Fourteen patients were women (77.7% and four were men. The mean age of the patients was 41.6±10 years old (confidence intervals 95%: 36.4-46.7 years old. The mean duration of disease was 10.5±6.3 years. Fourteen patients had the secondarily progressive form of MS, and four had the relapsing-remitting form. Mitoxantrone is an useful and clinically effective drug in MS and its major limitation is the potencial cardiotoxicity due to cumulative dose (140 mg.Hidrocloridrato de mitoxantrone (Novantrone® é um antracenedione utilizado como o agente mais recente de uma longa linha de imunossupressivos gerais estudados em esclerose múltipla (EM. Realizamos revisão de dados clínicos, laboratoriais, de neuroimagem e ecocardiografia de 18 pacientes, no período de fevereiro de 2001 a março de 2004, a partir de um total de 100 pacientes com EM definida. Quatorze pacientes eram do sexo feminino (77,7% e quatro eram do sexo masculino. A idade média dos pacientes foi 41,6±10 anos (intervalo de confiança 95%: 36,4-46,7 anos. A duração média da doença foi 10,5±6,3 anos. Quatorze pacientes apresentavam a forma secundária progressiva de EM e quatro a forma surto-remissão. O mitoxantrone é uma droga útil e clinicamente eficaz , sendo a principal limitação sua potencial cardiotoxicidade devido à dose cumulativa (140 mg.

  15. Ativação plaquetária na esclerose sistêmica e alternativas metodológicas para sua avaliação Platelet activation in systemic sclerosis and methodological options to its assessment

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    Paulo Sergio Massabki

    2004-02-01

    Full Text Available A esclerose sistêmica (ES é uma doença sistêmica caracterizada por microangiopatia, exuberante atividade do fibroblasto e anormalidades imunológicas. A faceta microangiopática é responsável pela maioria das complicações com potencial mortalidade. A interação entre o endotélio e as plaquetas desempenha um papel importante na fisiopatologia da ES. Evidências de ativação plaquetária na ES incluem níveis séricos elevados de substâncias derivadas das plaquetas (fator 4 plaquetário, fator de Von Willenbrand, tromboxane A2 e ß-tromboglobulina, agregados plaquetários circulantes, anormalidades ultraestruturais nas plaquetas e a presença de plaquetas aderidas ao endotélio. A presente revisão aborda de forma crítica os princípios e problemas potenciais dos principais métodos de avaliação da função e ativação plaquetárias. A avaliação da capacidade de agregação das plaquetas é feita com e sem a adição de agonistas (adenosina difosfato, colágeno e adrenalina. A ativação plaquetária pode ser avaliada de duas formas: pela dosagem da concentração plasmática de substâncias que são liberadas pela ativação plaquetária (ex., tromboxane, fator 4 plaquetário e pela mensuração da expressão em membrana plaquetária de moléculas que são transportadas para a membrana plaquetária durante o processo de ativação das plaquetas (ex., GMP-140 e glicoproteína IIb/IIIa. Uma contribuição recente para este campo foi dada pela demonstração de que a enolase específica de neurônios (NSE é liberada das plaquetas para o plasma em pacientes com ES em atividade. Assim, a dosagem da NSE, que é um exame disponível nos principais laboratórios com ênfase na dosagem de marcadores tumorais, pode se tornar um marcador de atividade plaquetária de grande utilidade em diversas condições clínicas.Systemic sclerosis (SSc is a multisystemic disease characterized by microangiopathy, exuberant fibroblast activity and

  16. The effect of functional limitations and fatigue on the quality of life in people with multiple sclerosis O efeito das limitações funcionais e da fadiga na qualidade de vida de indivíduos com esclerose múltipla

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    Leandro Alberto Calazans Nogueira

    2009-09-01

    Full Text Available The purpose of this study was to determine the effect of functional limitations and fatigue on the quality of life (QoL in people with multiple sclerosis (MS. A descriptive case series study at Lagoa Hospital - Rio de Janeiro, Brazil was carried. The main outcome measurements were demographic variables, QoL (SF-36 v.1, disability (EDSS, motor function of the upper limb (Box & Blocks test, Tone (Modified Ashworth Scale, gait (Hauser ambulatory index and fatigue (Fatigue Severity Scale. Sixty one patients fulfilled the study criteria. The mean age of patients was 39 years and 74% of patients were female. The most of cases presented mild disability (EDSSO objetivo do estudo foi determinar o efeito das limitações funcionais e da fadiga na qualidade de vida (qv de indivíduos com esclerose múltipla (em. foi conduzido um estudo descritivo de série de casos no Hospital da Lagoa - Rio de Janeiro, Brasil. As principais medidas utilizadas foram as variáveis demográficas, QV (SF-36 v.1, incapacidade (EDSS, função motora da extremidade superior (Teste da Caixa e Blocos, Tônus (Escala Modificada de Ashworth, marcha (Índice Ambulatorial de Hauser e fadiga (Escala de Severidade de Fadiga. Sessenta e um pacientes preencheram os critérios do estudo. A média de idade foi de 39 anos e 74% dos pacientes eram do gênero feminino. A maioria dos casos apresentou incapacidade leve (EDSS<3,5. Foi encontrada uma diminuição em todas dimensões da QV. Foi observada uma associação entre a função física e as variáveis EDSS, fadiga, tônus dos membros inferiores e marcha. Marcha, incapacidade, hipertonia dos membros inferiores e fadiga afetam negativamente a QV de indivíduos com EM.

  17. Resposta imune celular na vacinação anti-rábica canina

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    Jorge Timenetsky

    1985-02-01

    Full Text Available Os Autores estudaram a resposta imune celular e os níveis de anticorpos na vacinação e re-vacinação canina. A vacina utilizada foi a Fuenzalida & Palacios, empregada rotineiramente na imunização humana e canina, no Brasil. A avaliação da resposta mediada por células foi feita por testes de inibição de migração de leucócitos periféricos. Os níveis de anticorpos foram determinados por provas de soro-neutralização e fixação do complemento. Os cinco cães envolvidos no experimento receberam um esquema inicial de 5 doses e uma dose de reforço 210 dias após. Todos os animais exibiram níveis moderados de anticorpos após o esquema inicial e uma nítida resposta secundária após o reforço. A resposta imune celular, contudo, ocorreu apenas após a imunização inicial, não sendo detectada em resposta à dose de reforço. Concluem os Autores que a resposta imune celular ocorre na primo-vacinação anti-rábica canina nas condições experimentais empregadas e que embora a resposta secundária não tenha sido obtida neste estudo sua existência não pode ser descartada e deve ser reestudada em outras condições.

  18. Fatores associados à submissão ao teste rápido anti-HIV na assistência ao parto

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    Maria Inês Couto de Oliveira

    Full Text Available Resumo Os testes rápidos anti-HIV vêm sendo empregados nas maternidades com vistas à prevenção da transmissão vertical. O objetivo do estudo foi analisar os fatores associados à submissão ao teste rápido anti-HIV (desfecho. Estudo transversal, conduzido em 2009, em 15 hospitais do SUS do Rio de Janeiro/RJ, mediante entrevista a amostra representativa de 835 parturientes internadas e consulta a prontuários. Razões de prevalência ajustadas foram obtidas por regressão de Poisson, segundo modelo hierarquizado, permanecendo no modelo final as variáveis associadas ao desfecho (p ≤ 0,05. Segundo os prontuários (SP, 79,6% das mães foram submetidas ao teste rápido anti-HIV e, segundo as entrevistas (SE, 55,7%. No nível distal, a ausência de companheiro (SP, ter ≥ 6 moradores na residência (SP e a cor da pele não branca (SE se associaram a uma maior prevalência do desfecho. No nível intermediário, não dispor de sorologia negativa para o HIV do pré-natal (SP e SE se associou a uma maior prevalência do desfecho, bem como a realização de pré-natal na rede básica (SP e a não realização de pré-natal (SE. No nível proximal, o parto em hospital não certificado como amigo da criança se associou a uma maior prevalência do desfecho (SP e SE.

  19. Very low background gamma spectrometer mounted in anti-Compton with NaI(Tl) for the study of glaciers and sediment samples; Spectrometrie gamma a tres bas niveau avec anti-Compton NaI(Tl), pour l`etude des glaciers et des sediments

    Energy Technology Data Exchange (ETDEWEB)

    Pinglot, J.F.; Pourchet, M. [Centre National de la Recherche Scientifique (CNRS), 38 - Grenoble (France). Lab. de Glaciologie

    1994-05-01

    The determination of natural and artificial radioactivities of snow (glaciers, polar ice-caps) or sediment samples (lakes, oceans), takes great benefit with the use of the superior resolution of high purity germanium detector, N type, in a broad energy range( 10 keV up to 1.6 MeV). This detector (relative efficiency: 20%), very low background specified, is mounted in anti-Compton with a 9`x 8` NaI(Tl) scintillator, also with low background. International standards, used with a quantitative software allows the determination of the efficiency curve and the isotopes identification and specific activity. The anti-Compton suppressed spectrometer exhibits a decrease of the background by a factor of ten, without any change in efficiencies. Applications of this spectrometer deal with samples from lake Titicaca and a glacier from Spitsbergen. (authors). 6 figs., 7 refs.

  20. Auto-anticorpos anti-β2-glicoproteína I e síndrome metabólica Anticuerpos anti-β2-glicoproteína I y síndrome metabólico Anti-beta2-glycoprotein I autoantibodies and metabolic syndrome

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    Rodrigo B. Krás Borges

    2011-04-01

    Full Text Available FUNDAMENTO: A síndrome metabólica (SM é uma entidade pró-aterogênica. Autoanticorpos tais como β2-glicoproteína I (β2-gpI podem influenciar o aparecimento de ateromas. Estudos anteriores confirmaram uma associação entre anticorpos IgA anti-β2-gpI e isquemia cerebral, infarto do miocárdio, doença arterial periférica e doença da carótida. OBJETIVO: O objetivo desse estudo de caso-controle foi avaliar uma possível associação entre anticorpos anti-β2-gpI e anticardiolipina (aCL com SM não-complicada. MÉTODOS: Pacientes com SM sem histórico de eventos vasculares e indivíduos-controle, consistindo em pacientes da Enfermaria de Ortopedia admitidos devido a doenças musculoesqueléticas foram incluídos no estudo. Idade, sexo, etnia, histórico de hipertensão, tabagismo, hipercolesterolemia e diabetes mellitus foram avaliados como fatores de risco em ambos os grupos. Anticorpos IgG, IgM, e IgA anti-β2-gpI e aCL foram detectados através de imunoensaios enzimáticos. RESULTADOS: Um total de 68 pacientes com SM e 82 controles foram estudados. Os pacientes com SM tinham média de idade superior à dos controles (P = 0,001, enquanto homens (P = 0,003; OR 0,31; IC95%: 0,15-0,16 e etnia caucasiana (P = 0,004; OR 0,25; IC95%:0,10-0,60 eram predominantes nos controles. Histórico de hipertensão, hipercolesterolemia e diabetes mellitus foi mais prevalente nos pacientes com SM do que nos controles (P FUNDAMENTO: El síndrome metabólico (SM es una entidad pro-aterogénica. Autoanticuerpos tales como β2-glicoproteína I (β2-GPI pueden influir en la aparición de ateromas. Estudios previos han confirmado una asociación entre anticuerpos IgA anti-β2-GPI y la isquemia cerebral, infarto de miocardio, enfermedad arterial periférica y enfermedad carotidea. OBJETIVO: El objetivo de este estudio de caso-control fue evaluar una posible asociación entre los anticuerpos anti-β2-GPI y anticardiolipina (aCL con SM complicada. MÉTODOS: Se

  1. Análise do masseter, por espectroscopia de próton, em pacientes com esclerose sistêmica Proton spectroscopy study of the masseter in patients with systemic sclerosis

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    Marcelo Marcucci

    2009-06-01

    Full Text Available OBJETIVO: Avaliar a concentração de metabólitos no masseter em portadores de esclerose sistêmica, analisando os índices de creatina, colina, lipídio e lactato, e relacionar com a presença de osteólise mandibular. MATERIAIS E MÉTODOS: Foram selecionados 25 pacientes, sendo 15 com diagnóstico de esclerose sistêmica e agrupados de acordo com a presença (grupo I ou ausência (grupo II de osteólise, e 10 indivíduos normais (grupo III, controle. Todos foram submetidos a exame de espectroscopia de próton por ressonância magnética, com técnica PRESS e aquisição tridimensional. RESULTADOS: O estudo dos metabólitos dos três grupos apresentou os mesmos valores absolutos de creatina e lipídio. Os pacientes do grupo I apresentaram maior quantidade de colina em relação aos do grupo III. Já os indivíduos dos grupos I e II apresentaram menor quantidade de lactato em relação aos indivíduos normais. Os índices creatina/lipídio e colina/lactato foram os mesmos em todos os grupos. CONCLUSÃO: Observamos menor quantidade de lactato nos pacientes com esclerose sistêmica (grupos I e II. A colina está aumentada nos pacientes com osteólise mandibular (grupo I. Os índices creatina/colina, creatina/lactato, lipídio/lactato e colina/lipídio foram diferentes entre os grupos estudados. Mais estudos são necessários para a compreensão da participação do masseter no desenvolvimento da osteólise mandibular.OBJECTIVE: To evaluate metabolite concentration in the masseter of patients with systemic sclerosis, by analyzing creatine, choline, lipid and lactate levels, and correlating them with the presence of mandibular osteolysis. MATERIALS AND METHODS: The sample included 25 individuals, 15 of them with diagnosis of systemic sclerosis, divided into two groups according to the presence (group I or absence (group II of osteolysis, and 10 healthy individuals (group III, control. All of them were submitted to proton magnetic resonance

  2. Pediatric multiple sclerosis: analysis of clinical and epidemiological aspects according to National MS Society Consensus 2007 Esclerose múltipla pediátrica: análise de aspectos clínicos e epidemiológicos de acordo com o Consenso de 2007 da Sociedade Americana de Esclerose Múltipla

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    Maria Lúcia Brito Ferreira

    2008-01-01

    Full Text Available OBJECTIVE: To describe the epidemiological and clinical characteristics of child/adolescence multiple sclerosis (MS. METHOD: According to a descriptive, cohort study, with comparison of groups, data of 31 cases of child/adolescent MS, diagnosed at State Reference Center for Demyelinating Diseases - Hospital da Restauração, Recife, Pernambuco, Brazil, from 1987 to July 2007, were analyzed. The variables were: sex, initial symptoms, time for diagnosis, time of disease onset (early childhood, later childhood and adolescence, time of follow-up, number of relapses, relapses index and disability. Using SPSS software, version 13.0, t Student and Mann-Whitney tests were performed, with significance level of 0.05. RESULTS: There were 3 (9.7% cases of early childhood MS, 9 (29%, of late childhood MS, and 19 (61.3%, of adolescence MS. The general sex rate female: male was 1.8:1, varying according to age of onset. The predominant deficits were motor (12; 38.7% and brainstem/cerebellum (7; 22.5% especially on subsequent relapses of relapsing/remitting form. Time for diagnosis and average relapses index were higher in early childhood than in adolescence class (p=0.049 and p=0.028, respectively. Disability was higher for primary and secondary MS, as well as for early childhood. CONCLUSION: Early childhood MS presents proper and different characteristics from adults, consisting in a difficult diagnosis that demands aid of expert neurologist on MS.OBJETIVO: Descrever características epidemiológicas e clínicas de casos de esclerose múltipla (EM de início precoce. MÉTODO: Em estudo descritivo, prospectivo, tipo coorte, com comparação de grupos, foram analisados 31 portadores de EM de início precoce, diagnosticados no Centro Estadual de Referência para Atenção a Pacientes Portadores de Doenças Desmielinizantes do Hospital da Restauração, Recife, Pernambuco, entre 1987 e julho de 2007. As classes ao primeiro surto foram: infantil precoce, infantil

  3. Temporal pole signal abnormality on MR imaging in temporal lobe epilepsy with hippocampal sclerosis: a fluid-attenuated inversion-recovery study Anormalidade de sinal na imagem por RM do pólo temporal na epilepsia do lobo temporal com esclerose hipocampal: um estudo pela seqüência inversão recuperação com supressão da água livre (FLAIR

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    Henrique Carrete Junior

    2007-09-01

    Full Text Available OBJECTIVE: To determine the frequency and regional involvement of temporal pole signal abnormality (TPA in patients with hippocampal sclerosis (HS using fluid-attenuated inversion-recovery (FLAIR MR imaging, and to correlate this feature with history. METHOD: Coronal FLAIR images of the temporal pole were assessed in 120 patients with HS and in 30 normal subjects, to evaluate gray-white matter demarcation. RESULTS: Ninety (75% of 120 patients had associated TPA. The HS side made difference regarding the presence of TPA, with a left side prevalence (p=0.04, chi2 test. The anteromedial zone of temporal pole was affected in 27 (30% out of 90 patients. In 63 (70% patients the lateral zone were also affected. Patients with TPA were younger at seizure onset (p=0.018, but without association with duration of epilepsy. CONCLUSION: Our FLAIR study show temporal pole signal abnormality in 3/4 of patients with HS, mainly seen on the anteromedial region, with a larger prevalence when the left hippocampus was involved.OBJETIVO: Determinar a freqüência e o envolvimento regional da anormalidade de sinal do pólo temporal (APT em pacientes com esclerose hipocampal (EH utilizando seqüência inversão recuperação com supressão da água (FLAIR por RM, e correlacioná-la com a história. MÉTODO: Foram analisadas as imagens coronais FLAIR dos pólos temporais de 120 pacientes com EH e de 30 indivíduos normais, para avaliar a demarcação entre substâncias branca e cinzenta. RESULTADOS: Noventa (75% dos 120 pacientes tinham APT associada. Houve prevalência do lado esquerdo (p=0.04, chi2 teste na relação entre APT e o lado da EH. A zona ântero-medial estava acometida em 27 (30% destes pacientes. Em 63 (70% pacientes também a zona lateral estava acometida. Pacientes com APT apresentaram início da epilepsia quando mais jovens (p=0.018, porém sem associação com a sua duração. CONCLUSÃO: A seqüência FLAIR mostra haver ATP em 3/4 dos pacientes com EH

  4. Ausência de correlação entre as alterações morfológicas e bioquímicas na microcirculação de pacientes com esclerose sistêmica Absence of correlation between morphological and biochemical alterations in the microcirculation of patients with systemic sclerosis

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    Cristiane Kayser

    2004-02-01

    Full Text Available OBJETIVO: A medida da lacticemia de polpa digital sob estímulo frio (LPD-EF avalia um componente bioquímico da microcirculação, apresentando resultados anormais na esclerose sistêmica (ES. A capilaroscopia periungueal (CPU é um método estabelecido para avaliação do componente morfológico no fenômeno de Raynaud secundário à ES. No presente estudo pretende-se a confrontação dos achados da capilaroscopia periungueal com os dados da LPD-EF em dedos individuais de pacientes com esclerose sistêmica. MÉTODOS: Foram avaliados 14 pacientes com diagnóstico de ES e que apresentassem 3 dedos com grau discrepante de microangiopatia SD à CPU. Foi realizada dosagem da lacticemia de polpa digital nos três dedos selecionados em condições basais (LPD pré-EF e 10 minutos após estímulo frio (LPD pós-EF. A variação percentual das medidas de LPD pós-EF em relação à LPD pré-EF foi denominada ΔLPD. RESULTADOS: Houve acentuada variabilidade intraindividual (entre os diversos dedos nos parâmetros do teste do LPD-EF. Não encontramos diferença estatisticamente significante nos valores da LPD pré-EF, pós-EF ou ΔLPD ao compararmos os dedos com padrão capilaroscópico semelhante com os dedos díspares nos 14 pacientes com ES. Não houve correlação entre a intensidade dos achados morfológicos, registrados pela CPU, e as alterações funcionais, medidas pelo teste LPD-EF. CONCLUSÕES: A ausência de correlação entre as alterações microangiopáticas morfológicas verificadas pela CPU e as alterações funcionais de perfusão, avaliadas pelo teste da LPD-EF, sugere a possibilidade de que as últimas estejam relacionadas a lesões vasculares proximais, como arteríolas, artérias digitais e arco palmar.OBJECTIVE: The cold stimulus-fingertip lacticemy test (CS-FTL evaluates a microcirculation biochemical component and presents abnormal results in systemic sclerosis (SSc. Nailfold capillaroscopy is a well established method for the

  5. Systematic review versus internet search: considerations about availability and reliability of medical information regarding pregnancy in women with multiple sclerosis Revisão sistemática versus busca na internet: considerações sobre a disponibilidade e acurácia das informações médicas referentes à gravidez em portadoras de esclerose múltipla

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    Yara Dadalti Fragoso

    2012-12-01

    Full Text Available OBJECTIVE: To compare the results from a systematic medical review and meta-analysis on the subject of pregnancy and multiple sclerosis (MS with an internet review based on lay sites conducted by experts in computer-mediated communication, on the same subject. METHODS: The two reviews were carried out independently in English. Three medical doctors with experience in systematic reviews and two communication experts with experience in internet searching tools performed the study. RESULTS: Data from the medical systematic review showed some differences from that of highly accessed websites. CONCLUSION: Evidence-based studies conducted under the strictest rules for careful systematic reviews and meta-analyses should be available with open access, i.e. accessible without payment of a fee, thereby enabling worldwide knowledge on matters of great interest to healthcare providers and patients.OBJETIVO: Comparar os resultados de uma revisão sistemática médica com meta-análise sobre o tema gravidez em esclerose múltipla (EM aos resultados de uma revisão leiga, do mesmo assunto, baseada na Internet e conduzida por experts em comunicação mediada por computador. MÉTODOS: As duas revisões foram realizadas independentemente em inglês. Três médicos com experiência em revisões sistemáticas e duas experts em comunicação com experiência na busca de dados nas ferramentas da Internet realizaram este estudo. RESULTADOS: Os dados da revisão sistemática mostraram algumas diferenças daqueles que podem ser obtidos em websites de alto acesso. CONCLUSÃO: Estudos com dados baseado em evidência, realizados sob criteriosas regras válidas para revisão sistemática e meta-análise devem ser disponibilizados de forma aberta, ou seja, permitindo acesso sem pagamento de taxas, fazendo com que o conhecimento de assuntos de grande interesse a profissionais de saúde e pacientes se globalize.

  6. Working memory impairment in multiple sclerosis relapsing-remitting patients with episodic memory deficits Prejuízo de memória operacional em pacientes com esclerose múltipla recorrente-remitente com déficits de memória episódica

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    Simone Freitas Fuso

    2010-04-01

    Full Text Available Episodic memory is impaired in multiple sclerosis (MS patients, possibly because of deficits in working memory (WM functioning. If so, WM alterations should necessarily be found in patients with episodic memory deficits, but this has not yet been demonstrated. In this study we aimed at determining whether episodic memory deficits in relapsing-remitting MS are found in conjunction with impaired WM. We evaluated 32 MS patients and 32 matched healthy controls. Nineteen of the 32 patients had episodic memory impairment, and as a group only these individuals showed deficits in WM capacity, which may lead to difficulty in encoding, and/or retrieving information from episodic memory.Pacientes com esclerose múltipla (EM apresentam prejuízo de memória episódica possivelmente em decorrência de um déficit no funcionamento da memória operacional (MO. Se assim fosse, alterações de MO seriam necessariamente encontradas em pacientes com déficit de memória episódica, mas isto ainda não foi demonstrado. Neste estudo tivemos como objetivo determinar se déficits de memória episódica em pacientes com EM recorrente-remitente são encontrados em associação com prejuízo de MO. Avaliamos 32 pacientes com EM pareados com 32 voluntários saudáveis. Dezenove dos 32 pacientes apresentaram prejuízo de memória episódica, e como grupo, somente estes indivíduos apresentaram déficit na capacidade de MO, o que deve resultar na dificuldade de codificar, e /ou recuperar informações da memória episódica.

  7. Ensinando e aprendendo com portadores de Esclerose Múltipla: relato de experiência Enseñando y aprendiendo com los portatodes de Esclerósis Multiple: relato de experiencia Teaching and learning with Multiple Sclerosis patients: experience report

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    Lúcia Helena Rios Barbosa de Almeida

    2007-08-01

    Full Text Available Relatode experiência realizado para descrever a vivência de um grupo de estudantes de Enfermagem da Universidade Federal do Piauí, diante da realidade do ser portador de Esclerose Múltipla. A experiência evidencia a necessidade de uma equipe integrada para obter conhecimentos fundamentais e oferecer uma assistência holística ao portador. Enfatiza-se o impacto das ações desenvolvidas pelos estudantes, na Associação Piauiense de Esclerose Múltipla, possibilitando-os a conviver melhor com as dificuldades advindas com a doença. Além disso, a comunidade em geral é favorecida através dos conhecimentos repassados mediante atividades desenvolvidas pelo grupo. Concluímos que um conhecimento mais amplo acerca de uma patologia ainda tão cheia de mistérios só é possível quando se alia teoria à realidade do paciente.Este es un relato de una experiência de trabajo realizado por un grupo de estudiantes de Enfermería de la Universidad Federal de Piauí, sobre la siutación de un portador de Esclerosis Multiple. La experiencia demuestra la necesidad de un equipo integrado para obtener conocimientos fundamentales y ofrecer una asistencia integral al portador. Aquí se enfatiza las acciones desarrolladas por los estudiantes, dentro de la APPEM (Asociación Piauiense de Esclerósis Multiple, posible a coexistir mejor él las dificultades que se sucedierón con la enfermedad. Favorecen la comunidad en general con el conocimiento repasado por medio de las actividades desarrolladas para el grupo. Un conocimiento más amplio acerca de una patología llena de misterios, solo es posible, cuando se junta la teoria a la realidad del paciente.This report describes the experience of a group of nursing students from Universidad Federal do Piauí, in face of the reality of multiple sclerosis patient. The experience highlight the necessity of an integrated team to achieve fundamental knowledge and to offer a holistic assistance to the patient. The

  8. Frentenegrinas: notas de um capítulo da participação feminina na história da luta anti-racista no Brasil Frentenegrinas: notes on a Chapter of Women’s Participation in the History of Anti-Racism

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    Petrônio Domingues

    2007-06-01

    Full Text Available O artigo procura investigar a questão da mulher negra em uma perspectiva histórica, recuperando a trajetória e participação desse estrato populacional na Frente Negra Brasileira (1931-1937, considerada a maior (e a mais importante entidade anti-racista do país no período do pós-Abolição. A principal pergunta a ser respondida aqui se refere ao papel desempenhado pelas mulheres na Frente Negra Brasileira e no seu órgão informativo - jornal A Voz da Raça.This article investigates the black woman’s question in historical perspective, following their path and participation in the Frente Negra Brasileira (1931-1937, considered to be the major of the anti-racist movements in the country after the abolition period. The central question focuses on the women’s role in the Front and in its information organ, the newspaper A Voz da Raça.

  9. Anestesia combinada raqui-peridural em paciente portadora de esclerose lateral amiotrófica: relato de caso Anestesia combinada raquiepidural en paciente portadora de esclerosis lateral amiotrófica: relato de caso Combined spinal-epidural block in a patient with amyotrophic lateral sclerosis: case report

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    Adriano Bechara de Souza Hobaika

    2009-04-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A esclerose lateral amiotrófica é uma doença que se inicia entre a quinta e a sexta década de vida e provoca a degeneração e morte dos neurônios motores superiores e inferiores. Quando os músculos responsáveis pela ventilação são acometidos, o paciente evolui para o óbito em alguns anos em decorrência da insuficiência respiratória. RELATO DO CASO: Sexo feminino, 63 anos, esclerose lateral amiotrófica, submetida a tratamento cirúrgico de fratura transtrocantérica de fêmur. Quadro de fraqueza em membros superiores e inferiores, disartria, consciente e orientada. Aparelho respiratório: tosse ineficaz, diminuição da força dos músculos intercostais e diafragma e redução do murmúrio vesicular em bases pulmonares. Primeiramente, a punção peridural foi realizada em L3/L4, onde um cateter de silicone foi introduzido 5 cm. A seguir, a punção raquidiana foi feita em L4/L5 com administração de 7,5 mg de bupivacaína hiperbárica. Mais 37 mg de ropivacaína a 0,37% foram administrados pelo cateter peridural para que o bloqueio sensitivo alcançasse o dermátomo T10. O procedimento transcorreu sem complicações e a paciente recebeu alta hospitalar após três dias. CONCLUSÕES: As evidências têm demonstrado que a administração de bloqueios no neuroeixo parece ser segura em pacientes com esclerose lateral amiotrófica, pois evita a manipulação das vias aéreas e as complicações ventilatórias.JUSTIFICATIVA Y OBJETIVOS: La esclerosis lateral amiotrófica es una enfermedad que empieza entre la quinta y la sexta década de vida y que provoca la degeneración y la muerte de las neuronas motoras superiores e inferiores. Cuando los músculos responsables de la ventilación son acometidos, el paciente evoluciona a óbito en algunos años debido a la insuficiencia respiratoria. RELATO DEL CASO: Sexo femenino, 63 años, esclerosis lateral amiotrófica, sometida a tratamiento quirúrgico de fractura

  10. Ressonância magnética funcional na determinação da lateralização da área cerebral da linguagem

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    Meneses Murilo S.

    2004-01-01

    Full Text Available A ressonância magnética funcional (RMF é uma nova técnica capaz de detectar pequenas alterações no fluxo sanguíneo e oxigenação de tecidos cerebrais em que ocorre ativação neuronal. O seu emprego na avaliação pré-cirúrgica de pacientes com epilepsia portadores de esclerose mesial temporal está atualmente em avaliação em alguns centros de neurologia. O principal objetivo é encontrar o melhor paradigma de ativação na avaliação das funções de linguagem e memória, visando a substituição do teste de Wada, largamente utilizado nos dias de hoje. Para formular um paradigma já adaptado ao nosso idioma, apresentamos a nossa experiência em uma tarefa comportamental de fluência verbal na determinação da lateralização da área cerebral da linguagem. Avaliaram-se os exames de RMF de uma clínica de imagem particular em Curitiba por período de aproximadamente dois anos. Dos 19 pacientes estudados, obteve-se sucesso no exame em 16 e, destes, todos apresentavam dominância hemisférica cerebral da linguagem à esquerda. Em um subgrupo com 5 pacientes foi possível comparar os resultados obtidos com a técnica de Wada e RMF, havendo concordância entre as técnicas. A partir deste estudo e de vários outros semelhantes na literatura, acreditamos que a RMF está progressivamente conquistando seu espaço na prática médica.

  11. Auto-anticorpos anti-β2-glicoproteína I e síndrome metabólica

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    Rodrigo B. Krás Borges

    2011-04-01

    Full Text Available FUNDAMENTO: A síndrome metabólica (SM é uma entidade pró-aterogênica. Autoanticorpos tais como β2-glicoproteína I (β2-gpI podem influenciar o aparecimento de ateromas. Estudos anteriores confirmaram uma associação entre anticorpos IgA anti-β2-gpI e isquemia cerebral, infarto do miocárdio, doença arterial periférica e doença da carótida. OBJETIVO: O objetivo desse estudo de caso-controle foi avaliar uma possível associação entre anticorpos anti-β2-gpI e anticardiolipina (aCL com SM não-complicada. MÉTODOS: Pacientes com SM sem histórico de eventos vasculares e indivíduos-controle, consistindo em pacientes da Enfermaria de Ortopedia admitidos devido a doenças musculoesqueléticas foram incluídos no estudo. Idade, sexo, etnia, histórico de hipertensão, tabagismo, hipercolesterolemia e diabetes mellitus foram avaliados como fatores de risco em ambos os grupos. Anticorpos IgG, IgM, e IgA anti-β2-gpI e aCL foram detectados através de imunoensaios enzimáticos. RESULTADOS: Um total de 68 pacientes com SM e 82 controles foram estudados. Os pacientes com SM tinham média de idade superior à dos controles (P = 0,001, enquanto homens (P = 0,003; OR 0,31; IC95%: 0,15-0,16 e etnia caucasiana (P = 0,004; OR 0,25; IC95%:0,10-0,60 eram predominantes nos controles. Histórico de hipertensão, hipercolesterolemia e diabetes mellitus foi mais prevalente nos pacientes com SM do que nos controles (P < 0.05. A frequência de anticorpos aCL (todos os isotipos e do IgG e IgM anti-β2 gpI não diferiu de forma significante nos pacientes com SM e controles. Anticorpos IgA anti-β2-gpI foram significantemente mais frequentes nos pacientes com SM (42,2% do que nos controles (10,9% (P < 0,001. O OR ajustado para anticorpos IgA anti-β2-gpI foi 3,60 (IC95%: 1,55-8,37; P = 0,003. CONCLUSÃO: O presente estudo mostra que níveis elevados de autoanticorpos IgA para β2-gpI podem estar independentemente associados com SM.

  12. O uso de drogas anti-reumáticas na gravidez Use of anti-rheumatic drugs during pregnancy

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    Roger A. Levy

    2005-06-01

    Full Text Available A prescrição de drogas anti-reumáticas em pacientes férteis deve ter em conta o conhecimento atual sobre os efeitos na concepção, gestação e lactação. Um aconselhamento que levasse em consideração os riscos e benefícios do planejamento da gravidez, quando possível, seria o ideal. Com a incorporação de novas substâncias e o aparecimento constante de novos dados na literatura, esse assunto deve ser continuamente atualizado. O estagiamento de acordo com o fator de risco estabelecido pelo FDA é algumas vezes contraditório em relação a nossa prática, em parte porque os estudos em modelos animais podem não ser diretamente aplicáveis a humanos. A terapia com agentes modificadores da resposta biológica é aparentemente segura durante a gestação, considerando-se que tais agentes sejam compostos por moléculas grandes, incapazes de atravessar a placenta. Antiinflamatórios não-esteroidais (incluindo os inibidores específicos de COX-2 podem prejudicar a implantação do óvulo, mas o seu uso é possível no caso da gestação estar em curso, devendo ser evitados após 32 semanas do início da gravidez, quando estão relacionados com complicações fetais. Os inibidores específicos de COX-2 devem ser evitados pelo risco de malformação renal. Aspirina em baixa dose pode ser usada seguramente, quando indicada durante a gravidez. Há preferência pelas heparinas de baixo peso molecular, desde que a não fracionada apresente maior risco de induzir trombocitopenia e sangramento. A hidroxicloroquina é usada e de fato recomendada em gestantes com lúpus, com benefícios para a paciente e sem risco fetal. Varfarina é teratogênica se usada da 6ª a 9ª semana de gestação, mas pode ser usada durante o segundo e terceiro trimestres até a 34ª semana, quando deve ser interrompida com o intuito de evitar sangramento fetal. A imunoglobulina endovenosa é recomendada em casos difíceis de síndrome do anticorpo antifosfolipídeo e vem

  13. Esclerose sistêmica e níveis séricos elevados de organoclorado: uma associação possível? Systemic sclerosis and elevated organochlorine blood levels: a possible association?

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    Odirlei André Monticielo

    2008-02-01

    Full Text Available A patogênese da esclerose sistêmica (ES é complexa e pouco conhecida. Há a participação de ativação imune, dano vascular e excessiva produção de matriz extracelular com deposição de colágeno estruturalmente normal. Fatores genéticos e ambientais contribuem para a expressão da doença nos pacientes. Dentre os fatores ambientais, diversos agentes químicos já foram associados à doença. Descrevemos o caso de uma adolescente de 16 anos, com história prévia de hepatite criptogênica e câncer de lábio, que desenvolveu quadro atípico e rapidamente progressivo de esclerose sistêmica. Inicialmente o quadro era compatível com esclerodermia em placas, porém rapidamente evoluiu para uma forma sistêmica com grave acometimento cardiopulmonar e óbito. Durante a investigação de possíveis fatores etiológicos que pudessem estar relacionados, foram encontrados níveis séricos extremamente elevados de oxiclordano, um agrotóxico organoclorado. Uma possível correlação entre a intoxicação por esse agente químico e o surgimento de ES foi aventada.The pathogenesis of systemic sclerosis (SS is complex and not completely understood. Autoimmune mechanisms, vascular damage, and excessive extracelular matrix with collagen deposition play a significant role. Genetic and environmental factors also are decisive to the disease expression. Among environmental factors many chemical agents have been associated with the development of SS. A 16-year-old white woman, with previous history of cryptogenic hepatitis and cancer of the lips, developed an atypical and rapidly progressive form of SS. Initial sclerodermatous plaques progressed to a systemic form with severe cardiopulmonary involvement and death. Diagnostic workup revealed extremely high blood levels of oxychlordane. A possible association of organochlorine intoxication and SS is proposed.

  14. Esclerose de pequenos vasos venosos com corrente elétrica galvânica ponteada, em orelhas de coelhos Galvanic electric sharp stream and the sclerosis of marginal veins in the ear of rabbits

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    Sergio Santiago

    2001-12-01

    Full Text Available Foi idealizado e construido um aparelho que utiliza a corrente elétrica galvânica em baixa amperagem (100m A ,200m A, 300m A com o propósito de causar esclerose em vasos venosos de pequeno calibre, utilizando a veia marginal da orelha direita do coelho. O presente estudo buscou verificar em modelo experimental, o efeito da corrente elétrica galvânica em baixa amperagem. Foram utilizados 45 coelhos Nova Zelandia, distribuídos em 3 grupos de 15 animais , sendo utilizada a orelha esquerda como controle e a orelha direita como experimento. No grupo experimento os animais do grupo I foram submetidos à corrente elétrica galvânica de 100m A , no grupo II à 200m A, e no grupo III à 300m . No grupo controle, os animais foram submetidos somente ao procedimento mecânico de aplicação da agulha ao longo da veia marginal da orelha esquerda, sendo realizado uma, duas e três aplicações com intervalo de sete dias entre cada aplicação. Todos os animais foram avaliados quatorze dias após a última aplicação, em aspectos macro e microscópicos. Os resultados mostraram que, tanto a corrente elétrica galvânica em baixa amperagem, quanto o simples trauma mecânico da agulha, não são capazes de produzir esclerose na veia marginal da orelha do coelho que seja estatisticamente significante.Telangiectases, in accordance with current concepts, must be treated in a surgical way. The most commons surgicals treatments included the electrosurgery, electocauterization and electrolysis. The injury to the peripherical dermal tissue was a problem as the insatisfactory results in the vessels scleroses. Therefore, the aim of this study was estimated the value of one electrical device planned with care and exactness to provide a galvanic electric sharp stream to be used in a animal model. Thus, 45 white New Zealand adults male rabbits received a electrical galvanic pulse(marginal vein of the right ear or only the mechanical puncture(marginal vein of the left

  15. Questões éticas na esclerose múltipla sob o ponto de vista de médicos e pacientes Ethical issues in multiple sclerosis under physicians and patients point of view

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    Antonio Paulo Nassar Junior

    2005-03-01

    Full Text Available A esclerose múltipla (EM é afecção neurológica que acomete principalmente adultos jovens e evolui, geralmente, para graus variados de incapacidade física dos pacientes. Assim, a abordagem destes pacientes faz com que o médico depare-se com diversas questões éticas. OBJETIVO: Identificar as percepções de médicos e pacientes sobre a doença e, com isso, melhorar o relacionamento médico-paciente. MÉTODO: Foram feitos dois questionários, um respondido por 44 médicos e outro, por 103 pacientes, abordando questões sobre o diagnóstico e a conduta na EM. RESULTADOS: 96,1% dos pacientes sabiam seu diagnóstico, os outros gostariam de sabê-lo. Daqueles, 74,7% achavam que a forma contada foi correta e 90,9% que o médico é que deve contá-lo. Os sintomas que mais os incomodam são a fadiga (29,1% e os déficits motores (28,1%. Por outro lado, 68% dos pacientes afirmaram sofrer com a doença. O motivo mais importante para os médicos contarem o diagnóstico foi para melhorar a adesão ao tratamento (56,8%. A presença de um familiar neste momento é exigida por 54,6% dos médicos. Quando perguntados sobre as orientações de uma gravidez, 50% dos médicos não responderam adequadamente. Finalmente, 50% dos médicos manifestaram-se de forma contrária às terapias complementares. CONCLUSÃO: Os pacientes querem saber seu diagnóstico e o médico deve contá-lo da forma mais adequada e dar mais informações. Um debate sobre cuidados paliativos também faz-se necessário.Multiple sclerosis (MS is a neurologic disorder that mostly affects young adults and can usually evolute to physical disability. Thus, caring patients with MS brings many ethic questions for the physician. OBJECTIVE: To identify physicians and patients' perceptions about the illness and so improve doctor-patient relationship. METHOD: It was made two different questionnaires, one for patients and another for physicians, 103 patients and 44 physicians answered them. RESULTS

  16. Aloanticorpo anti-Diego (a em gestante Anti-Diego (a alloantibody in pregnant

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    Célia R. G. Silva

    2004-12-01

    Full Text Available O sistema de grupo sangüíneo Diego é composto principalmente por dois antígenos Diegoª (Diª e Diego b (Di b. A prevalência de Diª na população caucasóide é rara com uma freqüência de aproximadamente de 0,02%, podendo gerar anticorpos que são clinicamente significantes em medicina transfusional e neonatal. O presente estudo relata anti-Diª em gestante caucasóide detectado nos exames realizados no pré-parto por meio do teste indireto de antigamaglobulina humana. Na amostra de sangue de cordão foi realizado o teste de antigamaglobulina direto e o resultado foi negativo, o fenótipo do recém-nascido revelou Di (a - b +; portanto, a criança não desenvolveu doença hemolítica perinatal. O estudo fenotípico realizado em toda a família revelou que a sensibilização materna provavelmente ocorreu na segunda gestação gemelar onde as duas crianças demonstraram a presença de antígeno Diª adquirido por herança paterna.The Diego blood group system is composed of two principal antigens Diegoª (Diª and Diego b (Di b. In the Caucasian population the prevalence of Diª is rare with a frequency of about 0.02% and can lead to the production of antibodies that are important in newborn babies and in transfusional medicine. The present study reports on anti-Diª antibodies in a Caucasian pregnant woman, detected by indirect anti-globulin testing shortly before delivery. The direct anti-globulin test of the newborn's blood cord was negative because its phenotype was Di (a- b+. So the newborn did not develop any hemolytic diseases. A phenotyping study of the whole family was performed which revealed that probably the mother became sensitive during her second pregnancy of twins where the two children presented with the Diª antigen phenotype inherited from the father.

  17. Anormalidades do potencial evocado visual por padrão reverso em pacientes com esclerose múltipla definida Pattern reversal visual evoked potential abnormalities in patients with defined multiple sclerosis

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    Vítor Tumas

    1995-12-01

    Full Text Available O potencial evocado visual por padrão reverso, obtido por padrões de 14' e 28', foi analisado retrospectivamente em 28 pacientes com diagnóstico de esclerose múltipla definida. Observamos respostas anormais em 27/28 (96,4% pacientes, em 31/36 (86% dos olhos considerados sintomáticos e em 16/20 (80% dos ollhos assintomáticos. Classificando os achados em cada olho segundo as respostas obtidas aos dois estímulos, observamos uma possível relação entre essa classificação e a gravidade de comprometimento visual pela doença. Detectamos em alguns olhos anormalidades isoladas do N75 e também de P100 apenas à estimulação de 28'. Dessa forma, a técnica empregada foi considerada sensível e pôde definir inclusive comprometimento visual subclínico. Entretanto, não teve sensibilidade absoluta para detectar anormalidades em alguns olhos sintomáticos. O tipo de resposta aos estímulos empregados pode sugerir o grau de extensão de envolvimento do sistema visual pela doença. Os achados mostram ainda o envolvimento irregular e predominante das fibras mais centrais da visão pela esclerose múltipla, e sugerem processadores neurais distintos e paralelos para as respostas aos dois padrões utilizados.The pattern reversal visual evoked potential with checks of 14' and 28' was restropectivelly studied in 28 patients with definite multiple sclerosis. We observed abnormal responses in 27/28 (96.4% patients, in 31/36 (86% of symptomatic eyes, and in 16/20 (80% of asymptomatic eyes. When we classified the abnormalities in each eye according to the findings obtained with each check, there was a correlation between the pattern of abnormalities and the severity of visual involvement. Occasionally there were isolated abnormalities of N75 or only in P100 obtained with 28' checks. In conclusion the methodology applied was very sensible in detecting abnormalities in visual pathway. We could classify the findings in each eye and correlate them with the

  18. Profiles of HIV-infected anti-retroviral therapy naïve children from Mumbai, India.

    Science.gov (United States)

    Paranjpe, Supriya Mayur; Sarkate, Purva Pankaj; Ingole, Nayana Avinash; Raut, Shweta Sadanand; Mehta, Preeti Rajeev

    2016-11-01

    This study aimed to investigate the demographic profiles of human immunodifficiency virus (HIV) infected anti-retroviral therapy (ART) naïve children in our hospital and their relations to the clinical, immunological and nutritional status. A cross-sectional study was conducted in an Integrated Counselling and Testing Center (ICTC) at a tertiary care hospital in Mumbai. ART naïve HIV positive children were enrolled in the study. The demographic profiles, clinical features, immunological (CD4%/CD4 count) and nutritional status of these children were recorded. The agreement between clinical, immunological and nutritional staging was determined using Cohen's kappa test. In 192 HIV-infected ART naive children enrolled with a median age of 9 years (range 3 months-14 years), 97.4% acquired infection through vertical transmission. The most common clinical presentation was fever (39.6 %), followed by generalized lymphadenopathy (32.3%), cough (22.4%) and diarrhoea (9.9%). Tuberculosis was seen in 22.9% of the children. The agreement was fair between clinical and immunological staging, and slight between nutritional, immunological and clinical staging. Perinatal transmission is the most common mode of acquiring HIV infection in children. The Prevention of Parent to Child Transmission (PPTCT) program should be strengthened for lowering the transmission rate by providing extended ART to mothers during pregnancy and breast-feeding. Tuberculosis remains a major concern in HIV-infected children. The poor correlation between WHO clinical and immunological staging emphasizes the importance of making CD4 facilities available in HIV prevalent areas. Malnutrition cannot be used as a surrogate marker for predicting stage or severity as it is common at all stages of HIV disease.

  19. SYNTHESIS NEW POTENTIAL ANTI-INFLAMMATORY AGENT SODIUM SALT OF PENTAGAMAVUNON-0

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    Enade Perdana Istyastono

    2010-06-01

    Full Text Available Inflammation is the response of living tissues to injury. The process affects physiological changes such as erythema, edema, asthma and fever. Non-steroid Anti-inflammatory Drugs (NSAIDs have been developed since they could inhibit inflammation process because of its ability to inhibit biosynthesis of prostaglandin, one of inflammation mediators, through inhibition of cyclooxigenase (COX enzymes. Molecules, which have been reported having anti-inflammatory activity, for example, are curcumin, some curcumin derivatives and curcumin analogues. One of curcumin analogues that has been  developed is pentagamavunon-0 (PGV-0 whose IUPAC name is 2,5-bis(4'-hidroxy-3'-methoxy-benzylidenecyclo-pentanone. But PGV-0, which is like curcumin, practically insoluble in water, so it causes problems in the development. The aim of this research is to synthesize a derivative of PGV-0, a natrium salt of PGV-0 (natrium pentagamavunonate-0/Na-pentagamavunonate-0, which is hoped to have a better anti-inflammatory activity and solubility in water than PGV-0. PGV-0 was synthesized by reacting vanillin and cyclopentanone catalized by acid. Na-pentagamavunonate-0 was synthesized with PGV-0 as a starting material using an appropriate method. This research was able to synthesize new compound that was estimated as a natrium salt of PGV-0 (natrium pentagamavunonate-0/Na-pentagamavunonate-0.   Keywords: Curcumin, PGV-0, Na-pentagamavunonate-0, anti-inflammation

  20. [A spectrum of neurological diseases with anti-VGKC antibody].

    Science.gov (United States)

    Arimura, Kimiyoshi; Watanabe, Osamu; Nagado, Tatsui

    2007-11-01

    Anti-VGKC antibody causing peripheral nerve hyperexcitability is already an established clinical entity. Recently, many patients with non-herpetic limbic encephalitis (NHLE) with anti-VGKC antibody have been reported. The characteristic clinical features are low serum Na+ concentration and good response to immunotherapy. Anti-VGK antibody positive NHLE is relatively frequent among immune-mediated NHLE. It is important to know that this disease is responsive to immunotherapy. Furthermore, anti-VGKC antibody is also positive in some intractable epilepsies. These findings suggest that anti-VGKC is correlated with hyperexcitability in both the peripheral and central nervous system and that the spectrum of anti-VGKC antibody syndrome is now expanding.

  1. Prevenção primária de doenças cardiovasculares na obesidade infantojuvenil: efeito anti-inflamatório do exercício físico Early prevention of cardiovascular diseases in juvenile obesity: the anti-inflammatory effect of physical exercise

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    Márcia Braz Rossetti

    2009-12-01

    Full Text Available A pandemia da obesidade juvenil e do sedentarismo está relacionada com o maior risco de doenças cardiovasculares no futuro. Ambas com fisiopatologia inflamatória, essas condições têm atraído significativa atenção científica. O início dos eventos que agridem o endotélio vascular pode ocorrer na infância, porém, sinais clínicos da aterosclerose geralmente só aparecem na fase adulta. O tecido adiposo é hoje reconhecido por seu papel ativo, induzindo a produção de citocinas pró e anti-inflamatórias, como o fator de necrose tumoral-alfa, as interleucinas 1, 6 e 10, a proteína C-reativa e outras. Há várias evidências de que os níveis sanguíneos dessas citocinas se encontram mais altos em indivíduos com excesso de peso, inclusive crianças e adolescentes. A prevenção precoce, desde a infância, apresenta-se como a melhor maneira de evitar os danos da obesidade na fase adulta, enquanto o potencial da prática regular de exercícios físicos tem se mostrado surpreendente. Sua ação anti-inflamatória se manifesta através de menores concentrações séricas de interleucina 6, de proteína C-reativa e leptina, além de aumentos na adiponectina. Observa-se escassez de estudos randomizados e controlados avaliando as relações entre obesidade, inflamação e exercícios para a população jovem. Com resultados às vezes controversos, a maioria das conclusões é procedentede estudos com adultos. O objetivo desta revisão é avaliar o papel anti-inflamatório, e assim cardioprotetor, da atividade física regular na obesidade infantojuvenil.Nowadays, juvenile obesity and physical inactivity are pandemic conditions which relate to a greater future risk of cardiovascular diseases. From an inflammatory point of view, they have attracted massive scientific attention. The beginning of the events related to atherosclerosis may occur in childhood, generating endothelial and metabolic dysfunction; however, the symptoms usually only

  2. Capilaroscopia periungueal: importância para a investigação do fenômeno de Raynaud e doenças do espectro da esclerose sistêmica Importance of the nailfold capillaroscopy in the investigation of Raynaud's phenomenon and scleroderma-spectrum syndromes

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    Cristiane Kayser

    2004-02-01

    Full Text Available A capilaroscopia periungueal é um exame não invasivo e extremamente útil para avaliação do componente morfológico da microcirculação. Permite o diagnóstico diferencial precoce entre indivíduos com fenômeno de Raynaud (FRy primário e secundário. Na esclerose sistêmica e síndromes correlatas ocorrem alterações capilaroscópicas facilmente distinguíveis do padrão encontrado em indivíduos normais, sendo caracterizadas pela presença de ectasia capilar e áreas de deleção vascular, além de diminuição difusa da quantidade de alças. Em razão de sua relevância diagnóstica, a familiarização do médico clínico e do reumatologista com a CPU é de fundamental importância.Nailfold capillaroscopy is a noninvasive method useful for the evaluation of microcirculation morphologic component. It allows an early differential diagnosis between subjects with primary Raynaud's phenomenon and patients with secondary Raynaud's phenomenon. In systemic sclerosis and sclerodermaspectrum syndromes there are capillaroscopic findings easily distinguished from the pattern of healthy controls, and characterized by the presence of enlarged loops, avascular areas and diffuse loss of capillaries. Because of their diagnostic relevance, the acquaintance of internists and rheumatologists with nailfold capillaroscopy is of utmost importance.

  3. Amyotrophic lateral sclerosis: prospective study on respiratory parameters Esclerose lateral amiotrófica: estudo prospectivo de parâmetros respiratórios

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    Sara Regina Meira Almeida

    2010-04-01

    Full Text Available OBJECTIVE: To verify how efficient respiratory parameters are in the follow-up of subjects with amyotrophic lateral sclerosis (ALS and to observe possible correlations between respiratory and nutritional functions. METHOD: Sixteen patients with probable or defined ALS were selected and evaluated over eight months using the following respiratory parameters: spirometry, maximum inspiratory pressure (MIP, maximum expiratory pressure (MEP, arterial gasometry and pulse oximetry; and nutritional parameters such as body mass index (BMI and percentage weight loss. RESULTS: PaCO2 was a significant parameter to follow up disease evolution (p=0.051. There was significant correlation between MIP and MEP (r: 0.83; BMI and MIP (r: 0.70; BMI and MEP (r: 0.72; pulse oximetry and forced vital capacity (r: 0.57. CONCLUSION: PaCO2 was shown to be an efficient and significant parameter in the measurement of respiratory impairment; the correlations among MIP, MEP and BMI indicated that these are significant parameters for periodic clinical evaluation.OBJETIVO: Verificar a eficácia dos parâmetros respiratórios na evolução de indivíduos com esclerose lateral amiotrófica (ELA e identificar possíveis correlações entre função respiratória e nutricional. MÉTODO: 16 pacientes com diagnóstico provável ou definido de ELA foram selecionados por critérios definidos e avaliados, durante 8 meses, através de parâmetros respiratórios: espirometria, pressão inspiratória máxima (PIM, pressão expiratória máxima (PEM, gasometria arterial e oximetria de pulso; e parâmetros nutricionais: índice de massa corporal (IMC e porcentagem de perda de peso. RESULTADOS: PaCO2 foi um parâmetro significativo para acompanhar a evolução da doença (p=0.051. Houve correlação significante entre PIM e PEM (r: 0.83; IMC e PIM (r: 0.70; IMC e PEM (r: 0.72; oximetria de pulso e capacidade vital forçada (r: 0.57. CONCLUSÃO: PaCO2 foi marcador eficaz e significante para

  4. Avaliação da prevalência de hipertensão pulmonar na esclerose sistêmica Prevalence of pulmonary hypertension in systemic sclerosis

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    Ana Beatriz Cordeiro de Azevedo

    2004-02-01

    Full Text Available OBJETIVO: Avaliar a prevalência da hipertensão pulmonar (HP em pacientes com diagnóstico de esclerose sistêmica (ES em acompanhamento num serviço universitário terciário. MÉTODOS: Foram avaliados 57 pacientes com ES, em acompanhamento no Serviço de Reumatologia do HC-UFMG, através de exame clínico dirigido ao aparelho cardiorrespiratório, testes de função pulmonar e ecodopplercardiograma (ECO. Foram considerados critérios diagnósticos para HP: pressão sistólica de artéria pulmonar (PSAP > 40mmHg e/ou presença de outros sinais diretos ou indiretos de HP identificados durante o ECO. RESULTADOS: Dezesseis pacientes (28% apresentaram diagnóstico de HP, sendo 13 com PSAP > 40 mmHg e 3 com sinais indiretos de HP; 8 pacientes apresentaram HP isolada e 8 HP secundária à fibrose pulmonar. Em 9 pacientes havia sinais sugestivos de cor pulmonale ao ECO. Destes pacientes, 6 apresentaram PSAP > 40mmHg e 3 entre 35 e 40mmHg; dentre eles, 1 era assintomático e 8 apresentavam sinais sugestivos de HP ao exame físico. Dentre as variáveis clínicas e laboratoriais observadas, somente encontramos correlação de HP com a velocidade de hemossedimentação (VHS elevada (p = 0,004. CONCLUSÕES: A prevalência de HP associada à ES encontrada neste estudo foi semelhante a outras da literatura, apesar das limitações nesta comparação. A investigação da HP através do ECO é uma prática acessível, de grande auxílio para o diagnóstico precoce do acometimento vascular pulmonar. No entanto, é necessário que seja revisto o ponto de corte da PSAP medida ao ECO para diagnóstico de HP relacionada à ES.OBJECTIVE: To assess the prevalence of pulmonary arterial hypertension (PAH in patients with diagnosis of systemic sclerosis (SSc evaluated at a university tertiary service. METHODS: Fifty-seven SSc patients attending the Rheumatology outpatient clinic of HC-UFMG were studied by clinical assessment addressed to cardiopulmonary system

  5. Production of (anti)deuterons in heavy-ion collisions at SPS energies

    CERN Document Server

    Kolesnikov, Vadim Ivanovich

    2015-01-01

    In this paper NA49 results on the production of deuterons and anti-deuterons in semi-central Pb+Pb collisions at 158A GeV are presented. Midrapidity transverse momentum spectra of d ( ̄ d ) are analysed in several centrality bins. A combined analysis of (anti)deuterons and (anti)protons iss performed in the framework of the coalescence model.

  6. Application of anti-leptospira ELISA-lgM for the etiologic elucidation of meningitis Aplicação do ELISA-IgM anti-leptospira na elucidação etiológica das meningites

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    Marcos V Silva

    1996-04-01

    Full Text Available Leptospirosis is one of the causes of meningitis, although its importance is not well known. In the present study we contributed to this knowledge by demonstrating specific IgM class anti-leptospira antibodies by the immunoenzymatic method ELISA in 14.6% of cerebrospinal fluid (CSF samples from 171 patients with meningitis considered to be of indeterminate etiology. The frequencies of positivity were similar in cases with predominance of polymorphonuclear or lymphomononuclear leucocytes in the CSF. Age distribution showed a predominance of the 5 to 15 year age range (72%, and sex distribution showed a predominance of males (68%. The authors discuss the contribution of this method to the etiologic elucidation of meningitis.A Leptospirose é uma das causas de meningite, embora sua importância seja pouco conhecida. O presente estudo contribui para este conhecimento ao demonstrar anticorpos específicos da classe IgM anti-Leptospira pelo método imunoenzimático (ELISA, em 14,6% das amostras de líqüido cefalorraquianos (LCR de 171 pacientes com meningite considerada de etiología indeterminada. As freqüências de positividade foram parecidas nos casos com predomínio no LCR de leucócitos polimorfonucleares ou linfomononucleares. A distribuição por idade mostrou predomínio na faixa etária entre 5 e 15 anos (72% e por sexo o predomínio do masculino (68%. Os autores discutem a contribuição desse método na elucidação etiológica das meningites.

  7. Envolvimento renal na salmonelose septicêmica prolongada

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    Edgar Carvalho Filho

    1977-10-01

    Full Text Available Numa análise de 68 pacientes com o diagnóstico de salmonelose septicêmica prolongada (doentes com a forma hépato-esplênica da esquistossomose mansônica, e bactérias do gênero Salmonella isoladas do sangue, demonstrou-se que 28 deles (41,2% apresentaram, concomitantemente, proteinúria e alterações significantes do sedimento urinário (hematúria, leucocitúria e cilindrúria. Destes doentes 3 apresentaram quadro de síndrome nefrótica e quatro se apresentaram urêmicos. Em 10 doentes foi realizado estudo histológico dos rins, havendo em 5, glomerulonefrite proliferativo membranoss, em 2 esclerose glomerular focal, 1 paciente apresentou glomerulonefrite proliferativa mesangial e um apenas alterações histológicas mínimas. Infecção do trato urinário por Salmonella (a mesma isolada do sangue foi observada em 3 casos. A ocorrência do mesmo padrão histológico de alteração glomerular observado na glomerulopatia da esquistossomose sugeriu que o principal determinante da lesão glomerular foi, provavelmente, a infecção por S. mandoni. A elevada prevalência de alterações urinárias, em muitos casos desaparecendo com o tratamento da salmonelose, sugeriu que a infecção bacteriana contribuiu para o aparecimento das manifestações clínicas da nefropatia provavelmente através mecanismo imunológico. O achado de nefrite intersticial mais freqüente e intensa nestes casos do que naqueles apenas com esquistossomose também sugere uma peculiaridade desta condição provavelmente de natureza imunológica.

  8. Anti-inflammatory activity of Momordica charantia in edema paw and in cortisol seric modulation; Potencial antiinflamatorio da Momordica charantia no edema de pata e na modulacao do cortisol serico

    Energy Technology Data Exchange (ETDEWEB)

    Magnata, Simey S.L.P. [Pernambuco Univ., Recife, PE (Brazil). Dept. de Energia Nuclear]. E-mail: sfmagnata@terra.com.br; Correia, Marilia B.L.; Brandao, Jose Odinilson C.; Souza, Grace M.L.; Catanho, Maria Teresa J.A. [Pernambuco Univ., Recife, PE (Brazil). Dept. de Biofisica e Radiobiologia; Terra, Daniele A.; Amorim, Lucia F. [Rio Grande do Norte Univ., Natal, RN (Brazil). Dept. de Fisiologia

    2005-07-01

    The first sources that the humanity disposed to disease's treatment was plants and herbs. The Momordica charantia, Melao de Sao Caetano (bitter melon), occur in South and Central America and in East, it has been used as an anti-diabetic agent, anti-tumor, anti-helmintic and anti-ulcerogenic. The objective of this study is to research the Momordica charantia's activity on inflammatory process and the change on cortisol hormone seric concentration. To evaluate the anti-inflammatory activity were used mice (n=5) in test groups (30,60,100,250 mg/kg of extract) and control (negative and positive) groups (AAS 250 mg/kg and NaCl 0,9%); the inflammatory agent (carrageenan 1% p/v, 0,1 mL) was injected into right hind paw planter surface, 30 min after, the groups received each dose IP of extract, AAS and solution saline respectively; 4 hour after the mice was sacrificed and the difference between right and left hind foot mass was measured. There was a significant reduction (p<0,05)in carrageenan-induced edema paw at test from control group, the best result was obtained at 60 mg/kg dose which inhibits edema formation by 50%. To determinate the cortisol concentrations male Wistar rats, were divided in three groups: control, test A (2 hours of treatment) and test B (4 hours of treatment). The control group received 0,25 mL of saline solution (NaCl) 0,9% and the test groups 0,25 mL of Momordica charantia's aqueous extract, obtained by decoction of green leaves, (31,16 mg/kg animal); all by via IP. After the treatment, the animals were sacrificed and the serum obtained for realization of dosages. The cortisol was determined through radioimmunoassay. The results showed a reduction on a average by 83,9% from control group. The Momordica charantia's extract showed a high anti-inflammatory effect and was capable of reducing the seric cortisol on normal rats. (author)

  9. Aconselhamento em DST/Aids às gestantes que realizaram o teste anti-HIV na admissão para o parto: os sentidos de uma prática

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    Patrícia de Lima Fonseca

    Full Text Available Foram analisadas as práticas e os sentidos do aconselhamento para gestantes submetidas ao teste anti-HIV na admissão para o parto, e para profissionais de saúde que atuam na assistência à maternidade em Salvador, Brasil. Foi realizado um estudo qualitativo em uma maternidade, com observação participante e entrevistas semiestruturadas com 13 puérperas sem diagnóstico prévio para o HIV e sete profissionais de saúde. Observou-se que o exame anti-HIV é realizado de forma compulsória, sem considerar a autonomia da gestante, e que o aconselhamento se limita a informar o diagnóstico e dar orientações no pós-teste somente àquelas cujos resultados foram positivos. Os sentidos que permeiam o exame, assim como o entendimento da experiência e os significados construídos pelas puérperas, sobretudo quando se descobrem positivas para o HIV, não são abordados pelos profissionais, que não se sentem capacitados para acolherem a subjetividade das pacientes.

  10. Aconselhamento em DST/Aids às gestantes que realizaram o teste anti-HIV na admissão para o parto: os sentidos de uma prática

    Directory of Open Access Journals (Sweden)

    Patrícia de Lima Fonseca

    2012-06-01

    Full Text Available Foram analisadas as práticas e os sentidos do aconselhamento para gestantes submetidas ao teste anti-HIV na admissão para o parto, e para profissionais de saúde que atuam na assistência à maternidade em Salvador, Brasil. Foi realizado um estudo qualitativo em uma maternidade, com observação participante e entrevistas semiestruturadas com 13 puérperas sem diagnóstico prévio para o HIV e sete profissionais de saúde. Observou-se que o exame anti-HIV é realizado de forma compulsória, sem considerar a autonomia da gestante, e que o aconselhamento se limita a informar o diagnóstico e dar orientações no pós-teste somente àquelas cujos resultados foram positivos. Os sentidos que permeiam o exame, assim como o entendimento da experiência e os significados construídos pelas puérperas, sobretudo quando se descobrem positivas para o HIV, não são abordados pelos profissionais, que não se sentem capacitados para acolherem a subjetividade das pacientes.

  11. Determinación de anticuerpos anti-β2glicoproteína I en pacientes con síndrome antifosfolípido Anti- β2 glycoprotein antibodies in patients with antiphospholipid syndrome

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    Oscar Uribe Uribe

    2004-09-01

    Full Text Available EL objetivo de este estudio fue comparar la presencia de anticuerpos anti-β2glicoproteína I (anti- β2GPI con las pruebas convencionales de laboratorio de anticuerpos anticardiolipina (aCL y anticoagulante lúpico, y con las manifestaciones clínicas del síndrome antifosfolípido (SAF. Se incluyeron en el estudio 80 mujeres con SAF; 35 de ellas de la consulta de Reumatología y las otras 45 con historia de aborto recurrente espontáneo (ARE; 5 mujeres de la consulta de Reumatología sin SAF, 27 mujeres con ARE, sin SAF y un grupo control de 20 mujeres sanas en edad reproductiva. Se investigaron la presencia de anticuerpos IgG e IgM anticardiolipina (aCL e IgG anti- β2GPI por la técnica de ELISA, y el anticoagulante lúpico por la determinación del tiempo parcial de tromboplastina activado. Adicionalmente, se registraron las manifestaciones clínicas asociadas al SAF. De las pacientes con SAF, 25.7% del grupo de Reumatología (9/35 y 4.4% de las pacientes con ARE (2/45 fueron positivas para anticuerpos anti-β2GPI, mientras que ninguna de las mujeres sin SAF, ni de las mujeres del grupo control, fue positiva. La asociación entre la presencia de anti- β2GPI y los anticuerpos IgG e IgM aCL mostró una diferencia significativa en los títulos de 3+ (altamente positivos en contraste con los individuos negativos para anti- β2GPI. La positividad del anticoagulante lúpico también se correlacionó con la presencia de anticuerpos anti- β2GPI. No hubo diferencia significativa entre las diversas manifestaciones clínicas del SAF y la presencia de dichos anticuerpos. En conclusión, la determinación de anticuerpos anti- β2GPI tiene una alta especificidad en pacientes con SAF pero no se asoció con ninguna manifestación clínica en particular. The objective of this study was to compare the presence of anti-β2glycoprotein (anti- β2GPI antibodies with the conventional laboratory tests of anticardiolipin antibodies (aCL and lupus anticoagulant

  12. Influence of hexavanadates on Na+/K+- ATPase activity

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    Zdravković Aleksandra

    2016-01-01

    Full Text Available Introduction: There is a great interest in use of polioximetalates in clinical medicine, primary as antibacterial, antiviral and antitumoral agents. Considering the key role of Na+/ K+- ATPase in normal functioning of most animal cells, as well as pivotal roles in cancer cell migration, the aim of this paper was to examine the influence of new synthesized hexavandates [V6-CH3][Na]2, [V6-NO2][TBA]2, [V6-C3][H]2, [V6-C5d][TBA]2 on Na+/K+- ATPase activity. Material and methods: The enzymatic activity of porcine cerebral cortex Na+/K+- ATPase was followed in both the absence and presence of increasing concentration of [V6-CH3] [Na]2, [V6-NO2][TBA]2, [V6-C3][H]2, [V6-C5d][TBA]2 (within the range 10-8 - 10-3 mol/L. The released Pi, liberated from the enzymatic hydrolysis of ATP, was determined by spectrophotometric method, using Perkin Elmer Lambda 35 UV-VIS spectrophotometer. Results: Investigated compounds inhibit the activity of Na+/K+ ATPase in dose-dependent manner within the investigated range. Obtained results indicate that all investigated compounds inhibit the Na+/K+ ATPase activity, but with different inhibiting power. [V6-NO2] [TBA]2 (IC50 = 1,87 × 10-5 mol/L was the most potent inhibitor of Na+/K+ ATPase, while [V6-C5d][TBA]2 showed the least potent inhibiting power (IC50 = 1,31 × 10-4 mol/L . The results are consistent with previously published concentration-dependent inhibitory effect of polyoxometalates (including polioxovandates on ATPase activity from different model syistems. Conclusion: Based on the results, we can conclude that the examined compounds inhibit Na+/K+- ATPase activity in a dose-dependent manner. Inhibiting power of tested hexavanadates are different, and weaker than inhibiting power of decavanadates (tested earlier on Na+/K+- ATPase activity, which is probably due to differences in charge, size and shape of these polioxometalates. Considering the role of this enzymes in the functioning of healthy cells and the

  13. Efeito de anti-inflamatórios não esteroidais na apoptose de células epidermais lamelares de equinos com laminite

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    C.A.P. Gonçalves

    2013-10-01

    Full Text Available O objetivo deste trabalho foi avaliar a influência da administração dos anti-inflamatórios não esteroidais (AINEs cetoprofeno, fenilbutazona e flunixin meglumine sobre o índice apoptótico de células epiteliais do tecido lamelar de cavalos com laminite induzida por administração de amido. Foram empregados 20 equinos hígidos, divididos em quatro grupos experimentais (n=5: solução salina, cetoprofeno, fenilbutazona e flunixin meglumine. O tecido lamelar foi coletado por biópsia, fixado e corado pela técnica de TUNEL. À marcação positiva por essa técnica adicionou-se a avaliação morfológica celular para identificação da apoptose. Não houve diferença significativa no índice apoptótico entre os grupos tratados com anti-inflamatórios e o controle (P>0,05. Os anti-inflamatórios não interferiram sobre o índice apoptótico possivelmente porque foram administrados após a fase prodrômica da laminite e/ou porque não são eficazes em alterar a dinâmica da apoptose. Concluiu-se que a administração de anti-inflamatórios não esteroidais após a fase prodrômica da laminite não contribui para uma intervenção no curso da apoptose no tecido lamelar de cavalos com laminite quando comparados ao grupo controle não tratado. Outros estudos, com diferentes períodos de avaliação, são necessários para esclarecer os efeitos dos anti-inflamatórios não esteroidais na fisiopatologia da laminite em equinos, especialmente no que concerne à participação da apoptose.

  14. Ausência de anticorpos antilipoproteína lipase na doença de Behçet Lack of anti-lipoprotein lipase in Behçet's disease

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    Jozélio Freire de Carvalho

    2009-12-01

    Full Text Available OBJETIVO: A recente descrição de anticorpos antilipoproteína lipase (anti-LPL associados à dislipoproteinemia levounos a analisar sua presença e possível associação com achados clínicos e laboratoriais em pacientes com doença de Behçet. PACIENTES E MÉTODOS: Trinta e oito pacientes consecutivos com doença de Behçet [critérios do Grupo de Estudos Internacional em Doença de Behçet (International Study Group on Behçet's Disease - ISGBD] foram testados para a presença de anticorpos anti-LPL através da técnica de ELISA. Foi realizada avaliação clínica e laboratorial, incluindo perfil lipídico de jejum, pesquisa de autoanticorpos e marcadores inflamatórios (PCR, VHS na inclusão dos pacientes. Os critérios de exclusão foram quaisquer condição que afetassem o perfil lipídico. RESULTADOS: A média de idade foi de 42 ± 9 anos, sendo 68% do sexo feminino e 68% da cor branca. O tempo médio de duração da doença foi de 9,8 ± 7,5 anos. Vinte e nove por cento dos pacientes apresentaram história de trombose. Os níveis de PCR estavam elevados em 31% dos pacientes e VHS aumentada foi detectada em 31%, com níveis médios de 5,95 ± 10,3 mcg/mL e 14,5 ± 13,2 mm/1ªhora, respectivamente. Cerca de 47% dos pacientes estavam tomando prednisona, com dose média de 7,6 ± 10,8 mg/dia. Quanto aos níveis de risco cardiovascular da NCEP/ATPIII, colesterol elevado foi verificado em 26%, triglicerídeos em 18%, HDL baixo em 15% e elevado LDL em 25% dos pacientes com Behçet. Os níveis médios de CT foram 198 ± 48 mg/dL, de triglicerídeos 121 ± 61 mg/dL, HDL 52.4 ± 14.7 mg/dL e LDL 119 ± 35 mg/dL. Anticorpos anti-LPL to subtipo IgG foram detectados em 0/30 pacientes com Behçet. CONCLUSÃO: Esses dados aqui apresentados corroboram uma ausência de ligação entre inflamação, resposta imunológica e dislipoproteinemia nos pacientes com doença de Behçet e sugerem que outros mecanismos estão associados à dislipidemia vista

  15. The Anti-TNF-α Therapy in the Rheumatoid Arthritis A Terapia Anti-TNF-α na Artrite Reumatóide

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    Lilian Resende Faleiro

    2011-06-01

    Full Text Available Rheumatoid arthritis is a chronic, systemic autoimmune disease of unknown etiology that involves predominantly synovial articulations, which can lead to deformity and destruction. With the progression of the disease, patients with Rheumatoid Arthritis develop inability to perform activities of daily living both as a professional, generating a significant economic impact for the patient and to society. Although the exact cause of rheumatoid arthritis remains unknown, studies conducted over the past two decades has enabled greater understanding of the pathogenesis of this disease. This knowledge has allowed the development of new therapies used to treat severe forms of the disease. The main goal of treatment is to achieve remission, however, when this can not be expected to prevent joint damage and loss of function and even reduce pain. The latest strategies for the treatment of Rheumatoid Arthritis involve the early diagnosis and aggressive control of inflammation. The recognition of pro-inflammatory cytokines expressed more as tumor necrosis factor α (TNF-α and interleukin (IL 1 and IL6 enabled developing new therapies directed against these cytokines targets. TNF-α is a proinflammatory cytokine that plays a key role in immune response, defense against microorganisms and the inflammatory process. Biological agents that inhibit TNF-α are considered effective in reducing activity and in the retardation of structural joint damage in rheumatoid arthritis, especially in forms refractory to conventional treatments. Currently, they are available in Brazil, three anti-TNF-α: infliximab, etanercept and adalimumab. These drugs are relatively safe for Rheumatoid Arthritis, but may, however, present serious infectious complications such as reactivation of latent tuberculosis.The high cost of these drugs, their use in hospital and the risk to opportunistic infections remain the limiting factors for its widespread use in the treatment of Rheumatoid

  16. Analysis of Cl and Na in Hyperimmune Sera by NAA

    International Nuclear Information System (INIS)

    Baptista, T. S.; Zamboni, C. B.; Marcelino, J. R.

    2011-01-01

    The Cl and Na concentration values in four types of hyperimmune sera (anti-Bothrops, anti-Diphtheria, anti-Rabies and anti-Tetanus) used for immunological therapy were determined using Neutron Activation Analysis (NAA). These data were compatible with the specifications established by the Word Health Organization (WHO-OMS) and with the Brazilian Official Pharmacopea (Pharmaceutical Code Official of the Country). These data are an important support for quality control of hyperimmune sera production at Butantan Institute (Sao Paulo city, Brazil), responsible for supplying the Brazilian market.

  17. Pharmacokinetics and immunogenicity investigation of a human anti-interleukin-17 monoclonal antibody in non-naïve cynomolgus monkeys.

    Science.gov (United States)

    Han, Chao; Gunn, George R; Marini, Joseph C; Shankar, Gopi; Han Hsu, Helen; Davis, Hugh M

    2015-05-01

    The pharmacokinetics (PK) of biologic therapeutics, especially monoclonal antibodies (mAbs), in monkeys generally presents the most relevant predictive PK information for humans. However, human mAbs, xenogeneic proteins to monkeys, are likely to be immunogenic. Monkeys previously treated with a human mAb (non-naïve) may have developed antidrug antibodies (ADAs) that cross-react with another test mAb in subsequent studies. Unlike PK studies for small-molecule therapeutics, in which animals may be reused, naïve monkeys have been used almost exclusively for preclinical PK studies of biologic therapeutics to avoid potential pre-existing immunologic cross-reactivity issues. The propensity and extent of pre-existing ADAs have not been systematically investigated to date. In this study, the PK and immunogenicity of mAb A, a human anti-human interkeukin-17 mAb, were investigated in a colony of 31 cynomolgus monkeys previously exposed to other human mAbs against different targets. We screened the monkeys for pre-existing antibodies to mAb A prior to the PK study and showed that 44% of the monkeys had pre-existing cross-reactive antibodies to mAb A, which could affect the PK characterization of the antibody. In the subcolony of monkeys without measurable pre-existing ADAs, PK and immunogenicity of mAb A were successfully characterized. The impact of ADAs on mAb A PK was also demonstrated in the monkeys with pre-existing ADAs. Here we report the results and propose a pragmatic approach for the use of non-naïve monkeys when conducting PK studies of biologic therapeutics. Copyright © 2015 by The American Society for Pharmacology and Experimental Therapeutics.

  18. Papel da lidocaína por via venosa no tratamento da dor na esclerodermia: relato de caso Papel de la lidocaína por vía venosa en el tratamiento del dolor en la esclerodermia: relato de un caso Intravenous lidocaine to treat scleroderma pain: case report

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    Durval Campos Kraychete

    2003-12-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A esclerodermia ou esclerose sistêmica progressiva é uma doença sistêmica do tecido conjuntivo, de causa desconhecida, que costuma cursar com microangiopatia, isquemia de extremidades e dor intensa. O objetivo deste relato é descrever um caso do emprego de lidocaína por via venosa no tratamento da dor no curso de isquemia e enfatizar a possível ação antiinflamatória dos anestésicos locais nos pacientes com esclerodermia. RELATO DO CASO: Paciente do sexo feminino, 34 anos, auxiliar de enfermagem, portadora de esclerodermia há aproximadamente 8 anos, apresentava dor de elevada intensidade (escala numérica =10 nos membros superiores e inferiores, contínua, diária, acompanhada de alterações tróficas, da cor e da temperatura e pequenas úlceras nas extremidades. A paciente foi submetida a uma sessão semanal de lidocaína a 2% (400 mg sem vasoconstritor por via venosa durante 10 semanas com alívio da dor, do turgor, da elasticidade da pele e da perfusão periférica. CONCLUSÕES: O alívio da dor e de outros sintomas após a administração de lidocaína por via venosa sugere que os anestésicos locais podem modular a resposta inflamatória em vários estágios da esclerodermia.JUSTIFICATIVA Y OBJETIVOS: La esclerodermia o esclerosis sistémica progresiva es una enfermedad sistémica del tejido conjuntivo, de causa desconocida, que acostumbra acontecer con microangiopatía, isquemia de extremidades y dolor intenso. El objetivo de este relato es describir un caso del empleo de lidocaína por vía venosa en el tratamiento del dolor en el curso de isquemia y dar énfasis a una posible acción antiinflamatoria de los anestésicos locales en los pacientes con esclerodermia. RELATO DE CASO: Paciente del sexo femenino, 34 anos, auxiliar de enfermera, portadora de esclerodermia hace aproximadamente 8 años, presentaba dolor de elevada intensidad (escala numérica =10 en los miembros superiores e inferiores

  19. Neurobiologia do transtorno de personalidade anti-social Neurobiology of anti-social personality disorder

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    Cristina Marta Del-Ben

    2005-01-01

    Full Text Available Nos últimos anos, tem havido um interesse crescente a respeito de uma melhor compreensão sobre o comportamento anti-social. O aumento da criminalidade e violência urbanas pode ter contribuído para esse maior interesse. Além de fatores psicossociais, outros biológicos têm sido implicados na fisiopatogenia do transtorno de personalidade anti-social (TPAS. Estudos de neuroimagem apontam o envolvimento de estruturas cerebrais frontais, especialmente o córtex orbitofrontal, e a amígdala. Também tem sido sugerido que prejuízos na função serotonérgica estariam associados à ocorrência de comportamento anti-social, já que pacientes com diagnóstico de TPAS apresentam respostas hormonais atenuadas a desafios farmacológicos com drogas que aumentam a função serotonérgica cerebral e redução da concentração de receptores serotonérgicos. Uma abordagem ampla dos diferentes fatores possivelmente envolvidos na fisiopatogenia do TPAS poderia contribuir para o desenvolvimento de novas técnicas de prevenção e intervenção.Violence and crime have been increasing considerably in urban societies. As a consequence, some efforts have been made aiming at a better understanding of antisocial bevaviour. Apart from psychosocial factors, some evidences suggest the occurrence of biological factors in the pathogenesis of antisocial personality disorders (ASPD. Neuroimaging studies have shown the involvement of prefrontal areas, especially orbitofrontal cortex, and amygdala. Also, impaired serotonin (5-HT neurotransmission has been implicated, since patients with ASPD present alterations in measures of 5-Ht system, such as blunted hormonal response to 5-HT pharmacological challenges and reduced 5-HT receptors numbers. A comprehensive approach of antisocial behavior, including biological and psychosocial aspects could lead to the development of new techniques for prevention and intervention in ASPD.

  20. Noticias de la ciencia

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    Oscar F. Ramos M.

    1995-07-01

    Full Text Available Efectos anti-androgenicos del ddt : El DDT es un pesticida órganoclorado desarrollado durante la Segunda Guerra Mundial y actualmente de uso común para el control de la malaria. / Clonacion y caracterización de un tercer locus implicado en la enfermedad de Alzheimer: La enfermedad de Alzheimer es un trastorno degenerati vo del sistema nervioso central, el cual se manifiesta en el adulto por pérdida progresiva de la memoria hasta la demencia total. / caracterización molecular de un Autoantigeno involucrado en la Esclerosis múltiple:  La esclerosis múltiple es una enfermedad autoinmune que se caracteriza por una destrucción de la mielina mediada por los linfocitos T, B Y los macrófagos.

  1. Hepatites pós-transfusionais na cidade de Campinas, SP, Brasil: II. Presença dos anticorpos anti-HBc e anti-HCV em candidatos a doadores de sangue e ocorrência de hepatites pós-transfusionais pelo vírus C nos receptores de sangue ou derivados Post-transfusional hepatitis in the city of Campinas, SP, Brazil: II- Presence of anti-HBc and anti-HCV antibodies in blood donors and occurrence of post-transfusional hepatitis C virus in recipients of blood or derivates

    Directory of Open Access Journals (Sweden)

    Fernando Lopes Gonçales Júnior

    1993-02-01

    Full Text Available Pesquisamos os anticorpos anti-HBc e anti-HCV em amostras de soros provenientes de 799 candidatos a doadores, que tiveram suas unidades de sangue ou derivados transfundidas a 111 receptores. O anti-HBc e o anti-HCV foram reagentes, em respectivamente 9 e 2,1% dos doadores testados. Observamos que entre os 111 receptores, 44 haviam recebido pelo menos uma unidade anti-HBc positiva e 67 haviam sido transfundidos somente com unidades anti-HBc negativas. Houve um risco 4,5 vezes maior de aquisição de hepatite por vírus C pelos receptores que receberam pelo menos uma unidade anti-HBc positiva Se a pesquisa do anti-HBc fosse realizada na triagem sorológica dos doadores de sangue, cerca de 56% dos casos de HVC nos receptores saiam evitados. A população de receptores que recebeu pelo menos uma unidade anti-HCV reagente, apresentou um risco 29 vezes maior de adquirir esta hepatite, quando comparada aos receptores transfundidos com todas as unidades anti-HCV negativas. A realização do teste para a pesquisa do anti-HCV na triagem dos doadores de sangue, preveniria 79% dos casos de HVC pós-transfusionais. Os candidatos a doadores brasileiros parecem ser acometidos simultânea ou sequencialmente, pelos vírus B e C das hepatites, pois, 44,4% dos doadores anti-HCV positivos, também foram anti-HBc positivos. A realização dos testes para as pesquisas dos anticorpos anti-HBc e anti-HCV, nas triagens hemoterápicas, está indicada para prevenir a transmissão de hepatites pós-transfusionais, em nosso meio.We have analysed anti-HBc and anti-HCV antibodies in serum samples from 799 donors which had their blood or derivates transfused to 111 recipients. Anti-HBc and anti-HCV were reactive in respectively 9 and 2.1% of the donors tested. We have observed that among the 111 recipients, 44 had received at least one positive anti-HBc unit and 67 had been transfused only with negative anti-HBc, units. The risk of developing hepatitis C virus was 4.5 times

  2. Anticorpos anti-Brucella canis e anti-Brucella abortus em cães de Araguaína, Tocantins

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    Elaine Maria Seles Dorneles

    2011-04-01

    Full Text Available The aims of the present study were to determine the seroprevalence of infection by Brucella canis and Brucella abortus and to evaluate possible risk factors for infection in dogs from Araguaína, Tocantins, Brazil. Sera from 374 dogs, of the urban zones of the municipality, from both sexes, were submitted to the agar-gel immunodiffusion for Brucella canis-antibodies and to rose Bengal test (AAT and fluorescence polarization assay (FPA for Brucella abortus-antibodies. From the 374 tested dogs, 21 reacted in the AAT, but no one was positive in the FPA. The seroprevalence of B. canis infection found in Araguaína, Tocantins, Brazil, was 44.53% (95% IC; 39.43 to 49.72. No association was found among seropositivity for B. canis and the risk factors studied. Thus, data from the present study showed that there was no infection by B. abortus among dogs in the sample and that infection by B. canis is widespread and at high prevalence in Araguaína, Tocantins, Brazil.

  3. Baicalin benefits the anti-HBV therapy via inhibiting HBV viral RNAs

    International Nuclear Information System (INIS)

    Huang, Hai; Zhou, Wei; Zhu, Haiyan; Zhou, Pei; Shi, Xunlong

    2017-01-01

    Background: Although current antiviral treatments (nucleoside analogs, NAs) for chronic hepatitis B virus (HBV) infection are effective in suppressing HBV-DNA replication, their clinical outcomes can be compromised by the increasing drug resistance and the inefficiency in promoting HBsAg/HBeAg seroconversion. Objectives: In this study, we will explore possible effects and mechanism of a natural product baicalin (BA) with the anti-HBV efficacy of entecavir (ETV), a first-line anti-HBV drug, in HBV-DNA, HBsAg/HBeAg seroconversion and drug-resistance. Methods: The co-effects of BA and ETV were conducted in wild-type/NA-resistance mutant HBV cell lines and DHBV-infected duckling models. HBV-DNA/RNAs, HBsAg/HBeAg, host factors (hepatocyte nuclear factors) were explored for possible anti-HBV mechanism. Results and discussion: BA could significantly enhance and reduced HBsAg and HBeAg in hepG2.2.15, a wild-type HBV cell line. Co-treatment of BA and ETV had a more dramatic effect in NA-resistant HBV rtM204V/rtLl80M transfected hepG2 cells. Our study further revealed that BA mainly inhibited the production of HBV RNAs (3.5, 2.4, 2.1 kb), the templates for viral proteins and HBV-DNA synthesis. BA blocked HBV RNAs transcription possibly by down-regulating transcription and expression of HBV replication dependent hepatocyte nuclear factors (HNF1α and HNF4α). Thus, BA may benefit the anti-HBV therapy via inhibiting HBV viral RNAs. - Highlights: • Baicalin benefits the anti-HBV therapy. • Baicalin enhances ETV antiviral efficacy and overcomes NA-resistant HBV mutation. • The anti-HBV effect of baicalin is achieved by inhibiting HBV RNAs. • Baicalin down-regulates HBV replication-dependent host factors HNF 1α and HNF 4α.

  4. Baicalin benefits the anti-HBV therapy via inhibiting HBV viral RNAs

    Energy Technology Data Exchange (ETDEWEB)

    Huang, Hai, E-mail: HHai3552@sina.cn [Department of Microbiology and Biopharmacy, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203 (China); Zhou, Wei, E-mail: zhouw@fudan.edu.cn [Department of Chemistry, Fudan University, 220 Han Dan Road, Shanghai 200433 (China); Zhu, Haiyan, E-mail: haiyanzhu@fudan.edu.cn [Department of Microbiology and Biopharmacy, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203 (China); Zhou, Pei, E-mail: pzhou@shmu.edu.cn [Department of Microbiology and Biopharmacy, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203 (China); Shi, Xunlong, E-mail: xunlongshi@fudan.edu.cn [Department of Microbiology and Biopharmacy, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203 (China)

    2017-05-15

    Background: Although current antiviral treatments (nucleoside analogs, NAs) for chronic hepatitis B virus (HBV) infection are effective in suppressing HBV-DNA replication, their clinical outcomes can be compromised by the increasing drug resistance and the inefficiency in promoting HBsAg/HBeAg seroconversion. Objectives: In this study, we will explore possible effects and mechanism of a natural product baicalin (BA) with the anti-HBV efficacy of entecavir (ETV), a first-line anti-HBV drug, in HBV-DNA, HBsAg/HBeAg seroconversion and drug-resistance. Methods: The co-effects of BA and ETV were conducted in wild-type/NA-resistance mutant HBV cell lines and DHBV-infected duckling models. HBV-DNA/RNAs, HBsAg/HBeAg, host factors (hepatocyte nuclear factors) were explored for possible anti-HBV mechanism. Results and discussion: BA could significantly enhance and reduced HBsAg and HBeAg in hepG2.2.15, a wild-type HBV cell line. Co-treatment of BA and ETV had a more dramatic effect in NA-resistant HBV{sup rtM204V/rtLl80M} transfected hepG2 cells. Our study further revealed that BA mainly inhibited the production of HBV RNAs (3.5, 2.4, 2.1 kb), the templates for viral proteins and HBV-DNA synthesis. BA blocked HBV RNAs transcription possibly by down-regulating transcription and expression of HBV replication dependent hepatocyte nuclear factors (HNF1α and HNF4α). Thus, BA may benefit the anti-HBV therapy via inhibiting HBV viral RNAs. - Highlights: • Baicalin benefits the anti-HBV therapy. • Baicalin enhances ETV antiviral efficacy and overcomes NA-resistant HBV mutation. • The anti-HBV effect of baicalin is achieved by inhibiting HBV RNAs. • Baicalin down-regulates HBV replication-dependent host factors HNF 1α and HNF 4α.

  5. Efeito da dexametasona e do cetoprofeno na osteogênese e na resistência óssea em ratos

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    Patrícia Costa dos Santos da Silva

    2012-04-01

    Full Text Available O presente estudo teve como objetivo avaliar o efeito do cetoprofeno e da dexametasona na osteogênese ao redor de implante de hidroxiapatita densa (HAD na tíbia, no osso parietal, e na resistência óssea. Utilizaram-se 15 ratos Wistar, pesando 250±30 g, com 50 dias de idade. Após a anestesia com quetamina/xilazina IM, produziuse no osso parietal e na epífise proximal da tíbia uma cavidade de 3 mm, sendo implantada a HAD. Após a cirurgia os animais foram divididos em três grupos (n=5: controle (CT, anti-inflamatório não esteroidal (AINES e anti-inflamatório esteroidal (AIES. O grupo AINES foi submetido ao tratamento com cetoprofeno na dose de 12 mg/Kg/dia, o AIES recebeu doses de 0,10 mg/kg/dia de dexametasona o grupo CT recebeu solução fisiológica 0,9% (SF por via subcutânea durante 30 dias. Todos os grupos receberam a mesma dieta sólida e água ad libitum. Após 30 dias de experimento os animais sofreram eutanásia, os fêmures coletados, para teste mecânico, e os locais do implante das tíbias e o osso parietal, para análise histomorfométrica. Os grupos AINES e AIES apresentaram menor volume de osso neoformado na falha óssea e ao redor do implante de HAD , como também, menor força máxima para a ruptura completa dos fêmures, quando comparados com o grupo CT. O uso do cetoprofeno e a dexametasona interferiram na osteogênese ao redor do implante de HAD e no osso parietal, diminuindo a resistência óssea principalmente pela inibição da COX2 e diminuição das prostaglandinas, comprometendo a estabilidade e manutenção do implante.

  6. Mioscleroses

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    José Antonio Levy

    1968-09-01

    Full Text Available São apresentados os casos de 7 pacientes miopatas com retrações fibrotendinosas precoces. O autor é de opinião que este tipo de afecção não constitui uma unidade nosológica bem definida e compara suas observações com outras referidas na literatura médica citando ,entre outras, a miopatia esclerosa limitante, a esclerose muscular generalizada, as mioscleroses heredo-familiares, as miosites fibrosas, a miosclerose senil, a mesenquimose displásica e a atrogripose.

  7. Estabilidade do comportamento anti-social na transição da infância para a adolescência: uma perspectiva desenvolvimentista Stability of antisocial behavior on the infancy-adolescence transition: a developmental perspective

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    Janaína Pacheco

    2005-04-01

    Full Text Available O termo anti-social tem sido amplamente utilizado na literatura científica para descrição de problemas de comportamento não específicos, como comportamentos delinqüentes, agressividade e oposicionismo. O objetivo desse estudo é descrever e discutir o conceito de comportamento anti-social, como um indicador de transtornos mentais específicos e de algumas categorias de problemas comportamentais. Para isso, examinamos a relação entre o comportamento anti-social e o Transtorno Desafiador Opositivo, o Transtorno da Conduta, o Transtorno de Déficit de Atenção e Hiperatividade e o Transtorno de Personalidade Anti-social. Além disso, discute-se também os fatores que contribuem para a estabilidade desse comportamento na transição da infância para a adolescência e os prejuízos decorrentes ao longo do desenvolvimento. Propõe-se a ampliação das discussões conceituais acerca dos transtornos mentais, utilizando-se categorias mais amplas, como a de comportamento anti-social.The term antisocial is widely used in the literature to describe non-specific behavior problems such as delinquent behavior, aggressiveness, and oppositionist behavior. The aim of the present study was to describe and to discuss the concept of antisocial behavior as an indicator of specific mental disorders such as Attention-deficit and Hyperactivity Disorder, Conduct Disorder, Oppositional Defiant Disorder, and Antisocial Personality Disorder. Also, we discuss the factors that contribute to the stability of such behaviors in the transition from childhood to adolescence and the losses incurred throughout development. A recommendation is made to broaden conceptual discussions about mental disorders using wider categories such as antisocial behavior.

  8. Evolução favorável de recidiva de infecção por varicela zoster (cobreiro durante uso de natalizumabe em paciente com esclerose múltipla: relato de caso

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    Diego Rafhael Soares Carvalho Feitosa

    2017-04-01

    Full Text Available Objetivo: Relatar o caso de recidiva de herpes-zoster (HZ em paciente com esclerose múltipla (EM em uso de tratamento imunomodulador (natalizumabe com evolução favorável. Descrição de caso: Mulher de 39 anos com diagnóstico de EM há 1 ano e 6 meses, previamente tratada com interferon 1a, começou tratamento com natalizumabe, desenvolvendo HZ após três meses de tratamento. HZ foi tratado com aciclovir, por sete dias, via oral. Seguimento ambulatorial após três meses de tratamento mostrou resolução completa das lesões, sem desencadeamento de neuralgia pós-herpética. Conclusões: As novas terapias para a EM podem estar relacionadas a diferentes tipos de efeitos adversos. Nem todos os casos de HZ, associados com novas terapias para EM, evoluem de forma desfavorável. Estudos são necessários para reconhecer os fatores de riscos para as formas graves de HZ em tais pacientes.

  9. Binding modes and functional surface of anti-mammalian scorpion α-toxins to sodium channels.

    Science.gov (United States)

    Chen, Rong; Chung, Shin-Ho

    2012-10-02

    Scorpion α-toxins bind to the voltage-sensing domains of voltage-gated sodium (Na(V)) channels and interfere with the inactivation mechanisms. The functional surface of α-toxins has been shown to contain an NC-domain consisting of the five-residue turn (positions 8-12) and the C-terminus (positions 56-64) and a core-domain centered on the residue 18. The NC- and core-domains are interconnected by the linker-domain (positions 8-18). Here with atomistic molecular dynamics simulations, we examine the binding modes between two α-toxins, the anti-mammalian AahII and the anti-insect LqhαIT, and the voltage-sensing domain of rat Na(V)1.2, a subtype of Na(V) channels expressed in nerve cells. Both toxins are docked to the extracellular side of the voltage-sensing domain of Na(V)1.2 using molecular dynamics simulations, with the linker-domain assumed to wedge into the binding pocket. Several salt bridges and hydrophobic clusters are observed to form between the NC- and core-domains of the toxins and Na(V)1.2 and stabilize the toxin-channel complexes. The binding modes predicted are consistent with available mutagenesis data and can readily explain the relative affinities of AahII and LqhαIT for Na(V)1.2. The dissociation constants for the two toxin-channel complexes are derived, which compare favorably with experiment. Our models demonstrate that the functional surface of anti-mammalian scorpion α-toxins is centered on the linker-domain, similar to that of β-toxins.

  10. Perfil descritivo de esclerose múltipla com início até os 16 anos nos pacientes de um centro de referência do estado de São Paulo Perfil descriptivo de esclerosis múltiple con inicio hasta los 16 años de edad en los pacientes del centro de referencia del litoral de la provincia de São Paulo Descriptive profile of multiple sclerosis starting until the age of 16 in the reference center of the state of São Paulo

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    Yára Dadalti Fragoso

    2012-12-01

    Full Text Available OBJETIVO: Descrever o perfil de pacientes com esclerose múltipla iniciada até os 16 anos de idade no litoral do estado de São Paulo, Brasil. DESCRIÇÃO DOS CASOS: Análise retrospectiva das características dos pacientes que tiveram o episódio inicial de esclerose múltipla até os 16 anos. Nesta situação encontravam-se nove meninas e quatro meninos (7,1% da população total de esclerose múltipla da região. A idade média por ocasião do diagnóstico foi de 13,9 anos (variação entre 8 e 16, sendo a média atual de 19,5 anos (12 a 28. A apresentação inicial da doença foi: ataxia (quatro casos, neurite óptica (dois, motora cortical (dois, sensitiva cortical (dois, distonia (dois e esclerose múltipla medular (um. Todos os pacientes iniciaram com a forma remitente-recorrente da esclerose múltipla e dois deles, atualmente, apresentam a forma progressiva secundária. COMENTÁRIOS: A esclerose múltipla com início até os 16 anos precisa ser adequadamente registrada e discutida entre pediatras, neurologistas e neuropediatras. Poucos médicos têm bom conhecimento desta condição e a demora no diagnóstico e no tratamento pode ter consequências devastadoras para essas crianças e adolescentes.OBJETIVO: Describir el perfil de los pacientes con esclerosis múltiple iniciada hasta los 16 años de edad, en la región del litoral de la provincia de São Paulo, Brasil. DESCRIPCIÓN DE LOS CASOS: Análisis retrospectivo, a partir de los registros médicos, de las características de los pacientes que tuvieron episodio inicial de esclerosis multiple hasta los 16 años de edad. Fueron nueve muchachas y cuatro muchachos en esta situación (7,1% de la población total de esclerosis multiple en la región. El promedio de edad en el momento del diagnóstico fue de 13,9 años (variación 8-16, siendo el promedio de edad actual de 19,5 años (12-28. La presentación inicial de la enfermedad fue ataxia (4 casos, neuritis óptica (2 casos, motora

  11. Tradução e validação da versão brasileira da escala de gravidade na esclerose lateral amiotrófica (Egela Translation and validation of the amyotrophic lateral sclerosis severity scale (ALSSS

    Directory of Open Access Journals (Sweden)

    Núbia Maria Freire Vieira Lima

    2009-12-01

    Full Text Available O objetivo do trabalho foi traduzir a Amyotrophic Lateral Sclerosis Severity Scale para o português, como Escala de gravidade da esclerose lateral amiotrófica (Egela, além de validar e estudar sua confiabilidade. A escala foi submetida à versão e retroversão por tradutores bilíngües e três fisioterapeutas treinaram para padronizar sua aplicação. Foram avaliados 22 pacientes (5 mulheres, 17 homens, média de idade 45,9 anos pela Egela e pela medida de independência funcional (MIF; 11 foram examinados para classificação de disfagia. Os coeficientes de correlação intraclasse dos domínios da Egela foram acima de 0,89. Foi constatada alta consistência interna em todos os seus domínios e para cada avaliador; foram encontradas fortes correlações entre a MIF motora e o escore espinhal da Egela (r=0.87 e pThe purpose was to translate the Amyotrophic Lateral Sclerosis Severity Scale (ALSSS into Portuguese, to validate it and assess its reliability. The scale was submitted to bilingual translators, its abbreviation in Portuguese being Egela; three physical therapists were trained for its application. Twenty-two patients (5 women, 17 men, mean age 45.9 were evaluated by the Egela and by the functional independence measure (FIM; 11 of them were assessed for dysphagia classification. In all ALSSS domains the intraclass correlation coefficients were over 0.89; high internal consistency was found in all scale domains and for each examiner. Strong correlations were found between motor FIM and spinal ALSSS (r=0.87; p<0.0001, ALSSS swallow domain and both dysphagia classifications (r=-0.88; p=0.0015, and ALSSS speech domain and expression FIM (r=0.76; p<0.001. The Portuguese version of ALSSS showed significant inter-examiner reliability and internal consistency, as well as strong correlations with FIM scores, thus proving a valid and reliable tool for assessing patients with amyotrophic lateral sclerosis.

  12. Consenso brasileiro para transplante de células-tronco hematopoéticas para tratamento de doenças autoimunes Brazilian consensus on hematopoietic stem cell transplantation for autoimmune diseases

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    Júlio C. Voltarelli

    2010-05-01

    Full Text Available Neste trabalho, foram revisadas a literatura internacional e a experiência nacional com transplante de células-tronco hematopoéticas (TCTH para doenças autoimunes. A evidência acumulada indica que o TCTH autólogo pode beneficiar pacientes com esclerose múltipla em fase inflamatória, refratária aos tratamentos medicamentosos disponíveis, e pacientes com esclerose sistêmica cutânea difusa de caráter progressivo, com ou sem comprometimento sistêmico. Esse tratamento deveria ser disponibilizado na rede pública de saúde, numa fase inicial, em centros de referência com experiência em TCTH e no manejo clínico de doenças autoimunes sistêmicas graves.In this paper, international literature and national experience on hematopoietic stem cell transplantation (HSCT for autoimmune diseases were reviewed. Cumulative evidence indicates that autologous HSCT may benefit patients with inflammatory multiple esclerosis, refractory to available drug therapy, and progressive forms of diffuse cutaneous systemic sclerosis with or without systemic involvement. Initially, this treatment should be available in reference centers of the public health system, with experience in performing HSCT and in treating severe systemic autoimmune diseases.

  13. SEXUAL DYSFUNCTION INDUCED BY ANTI-PSYCHOTICS AND ANTI-DEPRESSANTS IN DRUG NAIVE PATIENTS – A COMPARATIVE STUDY

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    M. Mohanalakshmi

    2017-03-01

    Full Text Available BACKGROUND The aim of this study was to determine and compare sexual dysfunction caused by anti-psychotics and anti-depressants in drug naïve patients. MATERIALS AND METHODS Patients diagnosed as drug naïve schizophrenic and depression as per DSM-5 criteria & age between 18-45 years were recruited and allocated into group A (n=30–receiving anti-psychotics & group B (n=30 receiving anti-depressants after informed consent by the patients. Sexual dysfunction was assessed by Arizona Sexual Experiences Scale (ASEX during the initial 2 months of therapy. RESULTS ASEX mean for patients receiving antipsychotics increased from the baseline of 7.97 to 17.23 and the ASEX mean for patients receiving antidepressants increased from baseline of 7.80 to 18.67 with p value of 0.249 which is not statistically significant. Among the antipsychotics haloperidol ASEX mean increased from 7.87 to 18.00 and risperidone mean increased from 8.07 to 16.47 with the p value of 0.335 which is not significant. More patients on haloperidol showed evidence of sexual dysfunction as assessed by ASEX scoring than risperidone though p value was not significant. Among the two antidepressants ASEX score mean for amitriptyline patients increased from 8.07 to 16.47, and that of fluoxetine from 7.53 to 16.47 with the p value of 0.018* statistically significant at α of 0.05 level. CONCLUSION This study shows presence of sexual dysfunction in patients receiving antipsychotics & antidepressants by 2 nd month of therapy though statistically not significant. Fluoxetine group patients developed statistically significant sexual dysfunction. Implications for future research about sexual dysfunction in all new treatments should be strongly taken into account because this side effect adds to the emotional stress and worsening of mental dysfunction.

  14. Renal function in healthy dogs therapy with anti-inflammatory drugs

    OpenAIRE

    Borges, Marina

    2011-01-01

    Os anti-inflamatórios não-esteroidais têm uso extremamente difundido na clínica de pequenos animais, devido às suas propriedades analgésicas e anti-inflamatórias. Entretanto, o uso desses fármacos pode produzir alterações da função renal. O presente estudo teve como objetivo avaliar a função renal de cães saudáveis, submetidos à terapia com anti-inflamatórios não-esteroidais não seletivos, COX-2 preferenciais e COX-2 seletivos. Foram utilizados 30 cães, sem raça definida, adultos, machos e fê...

  15. Mielopatia por deficiência de vitamina B12 apresentando-se como mielite transversa

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    Vasconcellos Luiz Felipe Rocha

    2002-01-01

    Full Text Available As manifestações neurológicas associadas à deficiência de vitamina B12 incluem polineuropatia, mielopatia, demência e neuropatia óptica. O diagnóstico laboratorial é feito através da dosagem sérica de cianocobalamina ou homocisteína e da excreção urinária de ácido metilmalônico. No estudo anatomopatológico observa-se na microscopia a destruição da mielina e de axônios vistos na substância branca. A região mais comumente afetada é o cordão posterior cervical e/ou torácico. O acometimento da coluna lateral é raro, ocorrendo em casos graves e avançados. O tratamento consiste na reposição de vitamina B12 e a resposta depende da gravidade do quadro e do tempo transcorrido entre o inicio dos sintomas e inicio do tratamento. Relatamos o caso de um paciente que apresentou, como manifestação de deficiência de vitamina B12, mielite transversa. O estudo morfológico da medula demonstrou comprometimento dos tractos cortico-espinhais lateral e anterior, da coluna dorsal e ainda do tracto espino-talâmico.

  16. Oral Ultramicronized Palmitoylethanolamide: Plasma and Tissue Levels and Spinal Anti-hyperalgesic Effect

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    Stefania Petrosino

    2018-03-01

    Full Text Available Palmitoylethanolamide (PEA is a pleiotropic lipid mediator with established anti-inflammatory and anti-hyperalgesic activity. Ultramicronized PEA (PEA-um has superior oral efficacy compared to naïve (non-micronized PEA. The aim of the present study was two-fold: (1 to evaluate whether oral PEA-um has greater absorbability compared to naïve PEA, and its ability to reach peripheral and central tissues under healthy and local inflammatory conditions (carrageenan paw edema; (2 to better characterize the molecular pathways involved in PEA-um action, particularly at the spinal level. Rats were dosed with 30 mg/kg of [13C]4-PEA-um or naïve [13C]4-PEA by oral gavage, and [13C]4-PEA levels quantified, as a function of time, by liquid chromatography/atmospheric pressure chemical ionization/mass spectrometry. Overall plasma levels were higher in both healthy and carrageenan-injected rats administered [13C]4-PEA-um as compared to those receiving naïve [13C]4-PEA, indicating the greater absorbability of PEA-um. Furthermore, carrageenan injection markedly favored an increase in levels of [13C]4-PEA in plasma, paw and spinal cord. Oral treatment of carrageenan-injected rats with PEA-um (10 mg/kg confirmed beneficial peripheral effects on paw inflammation, thermal hyperalgesia and tissue damage. Notably, PEA-um down-regulated distinct spinal inflammatory and oxidative pathways. These last findings instruct on spinal mechanisms involved in the anti-hyperalgesic effect of PEA-um in inflammatory pain.

  17. Mielopatia neuro-óptica: Artério e arteriolosclerose. Considerações a propósito de um caso anátomo-clínico

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    J. Lamartine de Assis

    1951-06-01

    Full Text Available Os autores fazem uma síntese sobre o problema atual das doenças desmielinizantes do sistema nervoso, salientando o papel da alergia, de acordo com os trabalhos mais modernos, em particular os de Ferraro e col. Assinalam a dificuldade para o estabelecimento de uma classificação, em virtude da falta de conhecimento dos agentes etiológicos desencadeantes na maioria dos casos. Apresentam uma observação anátomo-clínica de mielo-patia neuro-óptica com artério e arteriolosclerose, em que a doença se iniciou pelo acometimento do nervo óptico direito, e, somente dois meses depois, surgiram os primeiros sinais de acometimento da medula espinal. No quarto mês de doença estabeleceu-se, de modo completo, o quadro medular, com uma sindrome motora tetraplégica pirâmido-extrapiramidal, outra motora primária nas extremidades distais dos membros superiores, por acometimento das pontas anteriores e, finalmente, uma sindrome sensitiva de tipo cordonai, abrangendo todas as formas de sensibilidade, a partir de C3. A enfermidade evoluiu em 12 meses, ocorrendo a morte em conseqüência de insuficiência respiratória de origem bulbar provável. O exame anátomo-patológico mostrou atrofia e esclerose total dos nervos ópticos, discretos infiltrados parvicelulares em torno de alguns vasos intracerebrais e piais e, na medula, um quadro histopatológico comparável ao que de regra se encontra na oftalmoneuromielite; apenas, no segmento cervical, onde as lesões eram muito extensas, havia foco de amolecimento mais pronunciado do que aqueles que se observam mais freqüentemente. 0 fato talvez decorra de esclerose arterial concomitante existente neste caso. Havia, também, lesões bulbares discretas.

  18. Natural antibodies in paracoccidioidomycosis Anticorpos naturais na paracoccidioidomicose

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    Carmelinda S. Unterkircher

    2004-06-01

    Full Text Available Recent attention has been focused on the natural antibodies as a component of natural immunity and as integral part of the idiotypic network. However, their functional role in different infections has rarely been studied. This work was undertaken to investigate the presence of natural antibodies in paracoccidioidomycosis (PCM. In addition, we analyzed anti-P. brasiliensis antibodies and their distribution in IgG subclasses in order to acquire better knowledge about the humoral immune response in this mycosis. Our findings show that the natural antibody response is not very much increased in PCM when compared with other parasite infections and this response is restricted to a few specificities, suggesting that P. brasiliensis moderately triggers CD5+ B cells. The anti-actin antibody was the main antibody specificity found in PCM. Specific antibodies to P. brasiliensis were mainly found in the IgG1 subclass in chronic patients of PCM.Recente atenção tem sido dada aos anticorpos naturais como componentes da imunidade natural e como parte integrante da rede idiotípica. Todavia, seu papel funcional em diferentes infecções tem, raramente, sido estudado. O objetivo deste trabalho foi investigar a presença de anticorpos naturais na paracoccidioidomicose (PCM. Em adição, analisamos os anticorpos específicos anti-P. brasiliensis e sua distribuição em subclasses a fim de adquirir mais conhecimento sobre a resposta imune humoral nesta micose. Nossos achados mostram que a resposta de anticorpos naturais não é acentuada na PCM quando comparada com outras infecções por parasitas e, é restrita a poucas especificidades, sugerindo que o P. brasiliensis estimula moderadamente as células B CD5+. O anticorpo anti-actina foi a principal especificidade encontrada na PCM. Os anticorpos especificos para P. brasiliensis, nos pacientes crônicos, eram, principalmente, da subclasse IgG1.

  19. Estudo longitudinal do anticorpo antilipoproteína lipase e sua relação com atividade de doença nos indivíduos com lúpus eritematoso sistêmico sem anticorpos anti-dsDNA Longitudinal fluctuation of anti-lipoprotein lipase antibody is related with disease activity in systemic lupus erythematosus patients without anti-dsDNA antibodies

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    Jozélio Freire de Carvalho

    2009-02-01

    Full Text Available INTRODUÇÃO: O Lúpus Eritematoso Sistêmico (LES se caracteriza por períodos de exacerbação e remissão clínica que frequentemente são acompanhados por alterações nos níveis séricos de anticorpos específicos, como o anti-dsDNA, que está presente em 40% dos casos, associado principalmente à atividade renal. Recentemente houve a descrição de duas subpopulações de anticorpos antilipoproteína lipase (anti-LPL no LES: uma com e a outra sem atividade anti-dsDNA. A possível relação desse último grupo de anticorpos com a atividade inflamatória de doença ainda não foi analisada no LES. OBJETIVOS: Avaliar longitudinalmente a associação dos níveis séricos dos anticorpos anti-LPL com atividade do LES em pacientes com anti-dsDNA persistentemente negativo. PACIENTES E MÉTODOS: Cinco pacientes com LES com anti-dsDNA persistentemente negativo mensurado por ELISA e por imunofluorescência indireta em crithidia luciliae e altos títulos de anti-LPL por ELISA (> 5 desvios-padrão (DP da média de 20 controles normais foram selecionados e acompanhados longitudinalmente durante um período mínimo de dois anos. RESULTADOS: Caso 1: Homem, 24 anos com LES desde 2001 apresentou hemorragia alveolar, proteinúria, hipertensão arterial sistêmica, eritema malar, aftas, artrite, FAN+, com SLEDAI (systemic lupus erythematosus disease activity index = 16 e anti-LPL = 144UA. Tratado com pulso de metilprednisolona e prednisona com melhora clínica e SLEDAI = 0 e redução do anti-LPL (109UA. Nova atividade com acometimento renal em abril de 2002, SLEDAI = 10 e aumento de anti-LPL (150UA. Iniciada pulsoterapia de ciclofosfamida e metilprednisolona com boa resposta, SLEDAI = 0 e diminuição de anti-LPL (77UA até a sua total negativação acompanhando a remissão do quadro no ano de 2003. Caso 2: Mulher, 32 anos, com LES desde 1997. Em setembro de 2001 iniciou vasculite cutânea, febre e rash, SLEDAI = 10, anti-LPL = 80UA. Em janeiro de 2002

  20. Anti-inflammatory activity of Adenanthera pavonina L., Fabaceae, in experimental animals Atividade anti-inflamatória de Adenanthera pavonina L., Fabaceae, em animais experimentais

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    Arzumand Ara

    2010-12-01

    Full Text Available Adenanthera pavonina L, Fabaceae alt. Leguminosae, Bengali name 'rakta kombol', is an Indian medicinal plant. It is endemic to Southern China and India, and widely naturalized in Malaysia, Western and Eastern Africa as well as in most islands of both the Pacific and Caribbean regions. This plant has been used in traditional medicine for the treatment of asthma, boil, diarrhoea, gout, inflammations, rheumatism, tumour and ulcers, and as a tonic. The dried and ground bark of A. pavonina L. was extracted, successively, with petroleum ether (PE, dichloromethane (DCM, ethyl acetate (EtOAc and methanol (MeOH, and the resulting extracts were assessed in vivo for anti-inflammatory activity on carrageenan-induced rat hind paw oedema as a model of inflammation. The extracts were administered orally at the doses of 200 and 400 mg/kg body weight, and statistically significant (pAdenanthera pavonina L, Fabaceae, conhecida na região de Bengala por "rakta kombol", é uma planta medicinal endêmica do sul da China e da Índia e amplamente difundida na Malásia, África Ocidental e Oriental, bem como na maioria das ilhas de ambas as regiões do Pacífico e Caribe. Esta planta tem sido utilizada na medicina tradicional para o tratamento da asma, febre, diarréia, gota, inflamações, reumatismo tumor, úlceras, e como tônico. Cascas secas e moídas de A. pavonina foi submetida a extração sucessiva com éter de petróleo (PE, diclorometano (DCM, acetato de etila (AcOEt e metanol (MeOH, e os extratos foram avaliados in vivo para atividade anti-inflamatória induzida por carragenina tendo como ensaio modelo de inflamação edema de pata em ratos.. Os extratos foram administrados por via oral em doses de 200 e 400 mg/kg de peso corporal, e foram observadas efeitos anti-inflamatórios de maneira dose-dependente, estatisticamente significativos (p<0,001. O extrato metanólico (400 mg/kg apresentou 37,10% (p<0,01 de inibição da inflamação na primeira hora do

  1. Crystal structure of Na3Sc2(PO4)3 at 60 deg C

    International Nuclear Information System (INIS)

    Lazoryak, B.I.; Kalinin, V.B.; Stefanovich, S.Yu.; Efremov, V.A.

    1980-01-01

    The structure of the ferroelectric phase of Na 3 Sc 2 (PO 4 ) 3 compound was studied. Na 3 Sc 2 (PO 4 ) 3 monocrystal heated by a jet of warm N 2 was investigated at 60 deg C. The rhombohedron modification was determined: a=8.927(3), c=22.34(4) A, Z=6, space group R anti 3c. Interatomic distances and inner angles of polyhedrons in Na 3 Sc 2 (PO 4 ) 3 structure were determined

  2. Determination of soluble ICAM-1 and TNFalphaR in the cerebrospinal fluid and serum levels in a population of Brazilian patients with relapsing-remitting multiple sclerosis Determinação dos níveis de ICAM-1 e TNFalfaR solúvel no líquido cefalorraqueano e soro numa população de pacientes brasileiros com esclerose múltipla forma surto-remissão

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    Soniza Vieira Alves-Leon

    2001-03-01

    Full Text Available Cytokines and adhesion molecules have been implicated in the pathogenesis of multiple sclerosis (MS, a chronic inflammatory disease of the central nervous system. In this study we analyzed intrathecal (CSF and serum levels of soluble intercellular adhesion molecule (ICAM-1 and TNFalphaR (60kD from 20 patients with clinically definite MS during acute relapse or stable disease. Comparing to control groups of healthy individuals and patients with intervertebral herniated disc, MS patients showed increased levels (pCitocinas e moléculas de adesão estão implicadas na patogênese da esclerose múltipla (EM, uma doença inflamatória crônica do sistema nervoso central. Neste estudo, nós determinamos os níveis solúveis da molécula de adesão intercelular (sICAM-1 e TNFalfaR (60kD no soro e líquido cefalorraqueano (LCR de 20 pacientes com EM clinicamente definida durante surto ou remissão. Os pacientes com EM apresentaram, em comparação com os grupos controle formados por indivíduos sadios e com hérnia de disco intervertebral submetidos a mielografia, níveis significativamente (p< 0.001 elevados de sICAM-1 e TNFalfaR tanto no soro como no LCR. Independente do estágio da doença, nenhuma diferença significativa foi encontrada entre os pacientes durante o surto (657±124.9 ng/ml ou na remissão (627±36.2 ng/ml. Um aumento consistente dos níveis de TNFalfaR no soro e LCR, apontam para a existência de processo inflamatório continuado no tecido cerebral dos pacientes com EM, a despeito da ausência de sinais clínicos de doença em atividade.

  3. Soroprevalência de anticorpos anti-Toxoplasma gondii em trabalhadores de um matadouro de suínos e em indivíduos com outras atividades na cidade de Palmas, Paraná, Brasil Seroprevalence of anti-Toxoplasma gondii antibodies in workers of a swine slaughterhouse and in individuals with other activities in the city of Palmas, Paraná, Brazil

    Directory of Open Access Journals (Sweden)

    Patricia Riddell Millar

    2007-02-01

    Full Text Available O risco de infecção por Toxoplasma gondii em trabalhadores de um frigorífico de suínos em Palmas, Paraná, Brasil, foi estudado comparativamente a outros indivíduos que não mantinham contato com animais e suas carcaças. As 174 amostras de soros foram divididas em dois grupos: grupo 1 - funcionários de um matadouro-frigorífico de suínos (133 e grupo 2 - controle (41. No ato da coleta, todos os participantes responderam a um questionário epidemiológico com as seguintes variáveis: sexo, idade, contato com gatos e solo, hábito de ingerir carne crua ou mal cozida, embutidos crus e leite cru. Todas as amostras de soros foram submetidas aos testes ELISA (Enzyme linked immunosorbent assay e RIFI (Reação de imunofluorescência indireta - IgG anti-T. gondii; por sua vez, para IgM anti-T. gondii, foi utilizada a RIFI. Todos os 174 indivíduos eram IgM soro não-reagentes. No grupo 1, 48,1% eram IgG sororreagentes na RIFI e 58,6% na ELISA. No grupo 2, 39,0% eram IgG sororreagentes na RIFI e 51,2% na ELISA. Não foram observadas diferenças estatisticamente significativas entre os grupos 1 e 2 em todas as variáveis, com exceção de "contato com gatos", para o grupo 1, e de "ingestão de leite cru", para o grupo 2, que foram estatisticamente significativas. Os resultados sugerem que a manipulação de carcaças (cistos não deve ter sido o único mecanismo de infecção envolvido na alta freqüência de sororeagentes na população estudada, embora possa ter contribuído na transmissão do parasita como fator de risco, assim como o contato com solo contaminado ou com gatos (oocistos.The risk of Toxoplasma gondii infection in workers of a swine slaughterhouse in Palmas, Paraná, Brazil was compared to other individuals not exposed to these animals and its carcasses. The 174 serum samples were divided in two groups: group 1 - slaughterhouse workers (133, and group 2 - control (41. During blood sampling, workers answered an epidemiological

  4. Ciclofosfamida: eficaz no tratamento do quadro cutâneo grave da esclerose sistêmica Cyclophosphamide: effective in the treatment of severe cutaneous involvement in systemic sclerosis

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    Patrícia Andrade de Macedo

    2009-06-01

    Full Text Available INTRODUÇÃO: A esclerose sistêmica (ES é uma doença reumatológica caracterizada por inflamação autoimune, vasculopatia e fibrose da pele e de vários órgãos. Poucos tratamentos são considerados eficazes para a doença com intenso envolvimento de pele como a ES na forma difusa. Portanto, avaliamos a eficácia da ciclofosfamida no tratamento de pacientes com ES difusa grave. PACIENTES E MÉTODOS: Nove pacientes com ES difusa (Critérios do Colégio Americano de Reumatologia [ACR] com escore de Rodnan de pele modificado (ERM > 30 (0-51 foram submetidos ao tratamento com ciclofosfamida (CFM EV na dose de 0,5 a 1,0 g/m² mensal por 18 meses, totalizando 18 pulsos. Além da realização do ERM a cada seis meses, exames laboratoriais e avaliação de efeitos adversos foram também analisados. Pacientes com doença pulmonar e envolvimento cardíaco foram excluídos. RESULTADOS: A maioria dos pacientes era do sexo feminino (77%, com média de idade de 41,7 anos e tempo de doença de 2,2 anos. Observou-se redução significativa do ERM de 37,7 ± 4,08 para 29,1 ± 8,13 após 12 meses de tratamento (P = 0,009. Sete pacientes completaram 18 meses de CFM e com redução persistente do ERM (média ERM = 26,4; P = 0,01. Houve também uma redução da proteína C-reativa (PCR (média inicial PCR = 8,9 mg/dL quando comparada com valores após 18 meses de tratamento (média PCR = 3,09 mg/dL; P = 0,04. Não foram observadas infecções, alterações urinárias e/ou quadro hematológico importante durante todo o tratamento. CONCLUSÃO: Nesta amostra de pacientes, o tratamento com a CFM foi eficaz e pode ser considerado como terapia alternativa para pacientes com ES e envolvimento cutâneo grave.INTRODUCTION: Systemic sclerosis (SSc is a rheumatologic disease characterized by autoimmune inflammation, vasculopathy and tissue fibrosis of skin and various organs. There are few effective treatments available for a severe cutaneous involvement of diffuse SSc

  5. Toxoplasmose em gestantes de Araraquara/SP: análise da utilização do teste de avidez de IgG anti-Toxoplasma na rotina do pré-natal = Toxoplasmosis in pregnant women from Araraquara/SP: analysis of Toxoplasma-specific IgG avidity test utilization in the prenatal care routine

    Directory of Open Access Journals (Sweden)

    Isabel, Thais F.

    2007-01-01

    Conclusões: O tratamento antiparasitário foi prescrito para algumas gestantes mesmo na presença de uma taxa de avidez de IgG anti-T. gondii alta no primeiro trimestre da gestação, mostrando que o teste de avidez não foi corretamente interpretado e utilizado na prática clínica

  6. A clinical epidemiological study of 251 cases of amyotrophic lateral sclerosis in the south of Brazil Estudo clínico epidemiológico de 251 casos de esclerose lateral amiotrófica no sul do Brasil

    Directory of Open Access Journals (Sweden)

    Lineu Cesar Werneck

    2007-06-01

    Full Text Available OBJECTIVE: To study the clinical forms of amyotrophic lateral sclerosis (ALS and the possible presence of risk factors in order to verify if there is any difference between cases in Paraná, Brazil. METHOD: We studied 251 cases, all of which fulfilled the diagnosis criteria proposed in El Escorial (WFN. Between 1977 and 2004, 157 male and 94 female patients were examined. RESULTS: 220 cases were classified as ALS-Spinal Onset (ALS-SO, 24 as ALS-Bulbar Onset (ALS-BO and 7 as Familial ALS. The mean age at time of evaluation was 54.4±12.3 years, and symptoms had started 17.9±15.7months previously. In the group studied, statistical relationships were found between heavy occupations and males; previous surgeries and females; ALS-BO and dysphagia and dysarthria in females; and ALS-SO and males, cramps, weakness, muscle atrophy, hypertonia, increased deep tendon reflex and abnormal gait. CONCLUSION: The average age at time of evaluation was lower than that registered in the literature but similar to the Brazilian series. Domestic work and heavy occupations appear to be related to precocious perception of the symptoms by interference with daily functions. The socioeconomically higher classes seek medical care early. There was no relationship with exposure to toxic agents or trauma.OBJETIVO: Estudar as formas clínicas de esclerose lateral amiotrófica (ELA e possíveis fatores de risco, a fim de verificar se existem diferenças entre os casos do Paraná, Brasil. MÉTODO: Estudamos 251 casos entre 1977 e 2004, que preencheram os critérios propostos em El Escorial (WFN, sendo 157 do sexo masculino e 94 do feminino. RESULTADOS: Foram classificados como ELA de início espinhal (ELA-IE 220 casos, ELA de início bulbar (ELA-IB 24 casos e 7 casos como ELA familiar. A idade média na avaliação foi 54,4±12,3 anos cujos sintomas iniciaram 17,9 ±15,7 meses antes. Foram encontradas relações estatísticas entre ocupação que demandam esforços físicos com

  7. Estudo comparativo entre o método convencional e o método da peroxidase anti-peroxidase na pesquisa do parasitismo tissular na cardiopatia chagásica crônica

    Directory of Open Access Journals (Sweden)

    A. J. A. Barbosa

    1986-04-01

    Full Text Available Na maioria dos chagásicos crônicos o Trypanosoma cruzi não é detectado no tecido ou apresenta se com extrema raridade, mesmo quando é pesquisado exaustivamente. Sendo os métodos utilizados, até então, inespecíficos para a demonstração do T. cruzi, propôs-se no presente trabalho proceder ao estudo comparativo entre o método convencional (HE e o método imunocitoquímico pela peroxidase anti-peroxidase (PAP, na avaliação quantitativa do parasitismo. Selecionaram-se 3 casos de cardiopatia chagásica crônica e, de um mesmo fragmento de cada caso, obtiveram se cortes que foram corados pelo H.E. (média de 100 cortes por caso e, consecutivamente, outros que foram corados pelo PAP (média de 70 cortes por caso. O caso n.° 1 foi autopsiado em 1952 e apresentava parasitismo freqüente. Nos demais, o exame rotineiro foi negativo. Obtiveram-se os seguintes resultados expressos em n.° de ninhos/100 cortes, respectivamente, corados pelo H.E. e pelo P.A.P. (HE/PAP. Caso n.° 1 - 80/171; caso n.° 2 = 5/116 e caso n.° 3 = 1/2. Os resultados mostram que o método imunocitoquímico empregado, além de facilitar o diagnóstico do parasitismo, demonstra também pequenos ninhos de amastigotas que dificilmente seriam diagnosticados pelos métodos convencionais; além disso mostrou-se útil mesmo em tecido incluídos em parafina há longo tempo.

  8. Multiple sclerosis or multiphasic disseminated encephalomyelitis? A new question about an old problem: case report Esclerose múltipla ou encefalomielite disseminada multifásica? Uma nova questão sobre um antigo problema: relato de caso

    Directory of Open Access Journals (Sweden)

    Pérciles A. Maranhão-Filho

    1996-09-01

    Full Text Available A 42 year-old woman developed paraplegia that resolved in six months, followed by sudden right hemiparesis and dysphasia two years later. The clinical work-up, including CT and MR scans, visual evoked potentials, CSF examination and cerebral biopsy suggested the posibility of either multiple sclerosis or multiphasic disseminated encephalomyelitis. The differential diagosis between both conditions is discussed.Relato de caso de uma mulher com 42 anos de idade, que apresentou paraplegia, com resolução em seis meses seguida por hemiparesia direita e disfasia de ínico súbito. Sua história, os aspectos da tomografia computadorizada e da ressonância magnética do crânio, os resultados do potencial evocado visual, do exame do líquido cérebroespinhal, da biópsia cerebral e da ressonância magnética de controle, sugeriram as possibilidade diagnosticas de esclerose múltipla ou encefalomielite disseminada multifásica. O diagnóstico diferencial entre ambas é discutido.

  9. Suplementação de N-acetilcisteína em pacientes infectados pelo HIV submetidos ao primeiro tratamento anti-retroviral: Avaliação do efeito sobre a carga viral, TNF-α, IL-6, IL-8, β2-microglobulina, IgA, IgG e IgM, haptoglobina e α1-glicoproteína ácida N-acetylcysteine supplementation of HIV-infected patients under the first anti-retroviral treatment: Evaluation of the effect on viral load, TNF-α, IL-6, IL-8, β2-microglobulin, IgA, IgG, IgM, haptoglobin and α1-acid glycoprotein

    Directory of Open Access Journals (Sweden)

    Aricio Treitinger

    2002-03-01

    Full Text Available Indivíduos infectados pelo vírus da imunodeficiência humana (HIV- 1 apresentam aumento progressivo da carga viral, da destruição do sistema de defesa imune celular e alterações imunológicas e inflamatórias, incluindo a elevação dos níveis séricos do fator de necrose tumoral alfa (TNF-α, interleucina 8 (IL-8, β2- microglobulina, IgA, IgG e IgM, haptoglobina e α1-glicoproteína ácida.O objetivo deste estudo foi avaliar os níveis séricos destes marcadores em indivíduos submetidos ao primeiro tratamento antiretroviral, suplementados ou não com N-acetilcisteína. Participaram deste estudo, duplo cego controlado por placebo, que teve a duração de 180 dias, 24 indivíduos que iniciaram a terapia antiretroviral O Grupo Estudo foi constituído por 11 indivíduos, que receberam suplementação de 600 mg/dia de Nacetilcisteína enquanto o Grupo Controle foi constituído por 13 indivíduo que receberam placebo. Os níveis dos marcadores avaliados foram determinados no dia anterior ao início do tratamento a que foram submetidos e após 60, 120 e 180 dias. Verificou-se diminuição significativa dos níveis de TNF-α (p=0,0001, IL-6 (p>0,05, IL-8 (p=0,0001, β2-microglobulina (p=0,0005, IgA (p=0,007, IgG (p=0,001, IgM (p=0,0001, haptoglobina (p=0,0001 e α1-glicoproteína ácida (p=0.012 em decorrência do tratamento anti-retroviral. A suplementação com N-acetilcisteína, na dose utilizada neste estudo, não teve efeitos aditivos ou sinérgicos sobre as variáveis analisadas. Em conclusão, a suplementação de pacientes HIV-positivos com 600 mg/dia de N-acetilcisteína não proporcionou benefícios adicionais àqueles decorrentes do tratamento anti-retroviral.Human immunodeficiency virus infection is associated with a progressive elevation of viral load and with a continuous destruction of the immune cellular defense system which is marked by immunological and inflammatory disorders characteristic of HIV-infected individuals. These

  10. Avaliação das funções cognitivas de atenção, memória e percepção em pacientes com esclerose múltipla Evaluation of cognitive functions related to attention, memory and perception of patients with multiple sclerosis

    Directory of Open Access Journals (Sweden)

    José Osmar Frazão Freitas

    2012-01-01

    Full Text Available Esclerose múltipla é uma doença desmielinizante, que leva à destruição de importantes estruturas do Sistema Nervoso Central. Essas lesões podem resultar em déficits cognitivos. Com o objetivo de investigar a relação entre esclerose múltipla e alterações cognitivas de atenção, memória e percepção, foram avaliados 28 pacientes em um Centro Estadual de Referência, que satisfaziam os critérios de inclusão: idade entre 20 e 55 anos, nível escolar mínimo de 2º grau completo e classificação na Escala Expandida de Incapacidade menor que 7,0. Foram empregados quatro testes neuropsicológicos, validados pelo Conselho Federal de Psicologia: teste da cópia e reprodução de memória da figura complexa A de Rey-Osterrieth, teste de aprendizagem áudio-verbal de Rey, teste d2 e teste de dígitos. Para investigar o impacto da fadiga sobre as atividades cognitivas foi utilizada a escala MFIS-21Br. A análise estatística consistiu dos testes ANOVA, t para amostras pareadas ou de Mann-Whitney e de Kolmogorov-Smirnoff, unicaudais à direita, para rejeição da hipótese nula com nível de significância de 0,05. Os resultados apontaram perdas cognitivas com significância estatística nos pacientes com idade entre 40 e 55 anos e nos que apresentaram comprometimento por fadiga nos subdomínios cognitivo e psicossocial. Os pacientes com tempo de doença entre 5,0 e 19,9 anos apresentaram redução da pontuação nos testes, mas sem significância estatística. Concluiu-se que, dentre as funções cognitivas avaliadas, memória foi a mais freqüentemente comprometida, seguindo-se de atenção, sendo a percepção, comparativamente, a mais preservada.Multiple sclerosis is a demyelinating disease that leads to the destruction of important structures of the Central Nervous System. These lesions may result in cognitive deficits. Aiming to investigate the relation between multiple sclerosis and cognitive alterations of attention, memory and

  11. O gerente de vendas no Brasil e a intenção de comportamento antiético - 1ª Parte

    OpenAIRE

    Urdan, André Torres

    2004-01-01

    O objetivo geral desta pesquisa é analisar a Intenção de Comportamento Antiético do executivo de vendas e alguns de seus possíveis determinantes, fruto de lacunas relevantes de conhecimento na realidade brasileira. Trata-se de uma replicação de estudo realizado nos Estados Unidos por SCHWEPKER Jr. (1999). Nesta linha, dois são os objetivos específicos. O primeiro, já cumprido na primeira parte do projeto, é descrever o perfil dos construtos Intenção de Comportamento Antiético, Julgamento Mora...

  12. Cistoadenocarcioma mucinoso de ovário e esclerose sistêmica Ovarian mucinous cystadenocarcinoma and systemic sclerosis

    Directory of Open Access Journals (Sweden)

    Maíta Poli de Araújo

    2004-02-01

    Full Text Available O câncer de ovário é a terceira causa de morte entre as neoplasias malignas em mulheres e o cistoadenocarcinoma mucinoso é uma neoplasia maligna originária do epitélio ovariano e que pode adquirir grandes dimensões. Alguns estudos sugerem um aumento do risco de neoplasia em pacientes com esclerose sistêmica (ES, mas a associação com neoplasia de ovário, principalmente do subtipo mucinoso, não é comum. Os autores descrevem um caso de cistoadenocarcinoma mucinoso de ovário em uma mulher branca de 52 anos com diagnóstico de ES difusa há seis anos, tratada previamente com D-penicilamina e ciclofosfamida, que procurou o serviço médico com queixa de dor e aumento do volume abdominal há três meses. Ao exame físico apresentava facies esclerodérmica, membros superiores com diminuição da elasticidade e enxerto bitibial em membros inferiores; no abdome havia a presença de uma massa endurecida estendendo-se da região suprapúbica até o epigástrio. Foi realizada laparotomia exploradora onde se encontrou uma massa cística no ovário direito, com peso de 3.300 gramas. Em seguida procedeu-se exérese do tumor com histerectomia total e ooforectomia bilateral. O exame histológico confirmou tratar-se de um cistoadenocarcinoma mucinoso sem invasão de cápsula.Ovarian cancer is the third cause of death among malignant neoplasia in women, and the mucinous cystadenocarcinoma is a malignant neoplasia of the ovarian epithelium, which may achieve great dimensions. Some studies suggest an increased risk of neoplasia in patients with systemic sclerosis (SSc, but the association with ovarian neoplasia, specially the mucinous subtype, is rare. The authors describe a case of ovarian mucinous cystoadenocarcinoma in a 52 year-old Caucasian woman who had the diagnosis of SSc 6 years ago, previously treated with cyclophosphamide and D-penicillamine, who sought for a medical service complaining of pain and increase of abdominal volume during the last

  13. Effects of Levetiracetam, Carbamazepine, Phenytoin, Valproate, Lamotrigine, Oxcarbazepine, Topiramate, Vinpocetine and Sertraline on Presynaptic Hippocampal Na(+) and Ca(2+) Channels Permeability.

    Science.gov (United States)

    Sitges, María; Chiu, Luz María; Reed, Ronald C

    2016-04-01

    Ion channels are targets of various antiepileptic drugs. In cerebral presynaptic nerve endings Na(+) and Ca(2+) channels are particularly abundant, as they control neurotransmitter release, including the release of glutamate (Glu), the most concentrated excitatory amino acid neurotransmitter in the brain. Several pre-synaptic channels are implicated in the mechanism of action of the pro-convulsive agent, 4-aminopyridine (4-AP). In the present study the effects of levetiracetam and other established and newer (vinpocetine) anti-epileptic drugs, as well as of the anti-depressant, sertraline on the increase in Ca(2+) induced by 4-AP in hippocampal isolated nerve endings were investigated. Also the effects of some of the anti-seizure drugs on the selective increase in Ca(2+) induced by high K(+), or on the selective increase in Na(+) induced by veratridine were tested. Sertraline and vinpocetine effectively inhibited the rise in Ca(2+) induced by 4-AP, which was dependent on the out-in Na(+) gradient and tetrodotoxin sensitive. Carbamazepine, phenytoin, lamotrigine and oxcarbazepine inhibited the rise in Ca(2+) induced by 4-AP too, but at higher concentrations than sertraline and vinpocetine, whereas levetiracetam, valproic acid and topiramate did not. The three latter antiepileptic drugs also failed in modifying other responses mediated by the activation of brain presynaptic Na(+) or Ca(2+) channels, including Glu release. This indicates that levetiracetam, valproic acid and topiramate mechanisms of action are unrelated with a decrease in presynaptic Na(+) or Ca(2+) channels permeability. It is concluded that depolarized cerebral isolated nerve endings represent a useful tool to unmask potential antiepileptic drugs targeting presynaptic Na(+) and/or Ca(2+) channels in the brain; such as vinpocetine or the anti-depressant sertraline, which high effectiveness to control seizures in the animal in vivo has been demonstrated.

  14. Rheumatic diseases and male infertility

    OpenAIRE

    Freire, Eutília Andrade Medeiros; Nepomuceno, Jamile De Castro Alves; Maia, Inês De Oliveira; Ciconelli, Rozana Mesquita [UNIFESP

    2006-01-01

    As doenças reumáticas podem causar distúrbios sexuais e reprodutivos. As razões destes distúrbios são multifatoriais. Manifestações e sintomas das doenças podem reduzir a libido e interferir no sucesso da reprodução, como ocorre na artrite reumatóide (AR), lúpus eritematoso sistêmico (LES), espondilite anquilosante (EA) e esclerose sistêmica (ES). A atividade da doença pode levar a uma alteração do eixo hipotálamo-hipófise, acarretando períodos de disfunção gonadal. Os auto-anticorpos e os di...

  15. Doenças reumáticas e infertilidade masculina

    OpenAIRE

    Freire,Eutília Andrade Medeiros; Nepomuceno,Jamile de Castro Alves; Maia,Inês de Oliveira; Ciconelli,Rozana Mesquita

    2006-01-01

    As doenças reumáticas podem causar distúrbios sexuais e reprodutivos. As razões destes distúrbios são multifatoriais. Manifestações e sintomas das doenças podem reduzir a libido e interferir no sucesso da reprodução, como ocorre na artrite reumatóide (AR), lúpus eritematoso sistêmico (LES), espondilite anquilosante (EA) e esclerose sistêmica (ES). A atividade da doença pode levar a uma alteração do eixo hipotálamo-hipófise, acarretando períodos de disfunção gonadal. Os auto-anticorpos e os di...

  16. Evolução branda de recidiva de infecção por varicela zoster após tratamento com fingolimode em paciente com esclerose múltipla: relato de casoBenign evolution of shingles with fingolimod in a patient with multiple sclerosis: case report

    Directory of Open Access Journals (Sweden)

    Antonio Arlindo Morais

    2016-03-01

    Full Text Available Objetivo: Relatar o caso de um paciente com recidiva de herpes-zoster (HZ e evolução benigna mesmo diante de imunomodulação para esclerose múltipla (EM. Descrição de caso: Mulher de 48 anos com história de EM durante seis anos, previamente tratada com interferon1b, iniciou tratamento com fingolimode, desenvolvendo HZ após 10 meses de tratamento. Mesmo sem tratamento com acyclovir, a paciente desenvolveu um curso brando, sem posterior desenvolvimento de neuralgia pós-herpética. Conclusões: As novas terapias para EM podem estar associadas a novos tipos de eventos adversos. Apesar da potencial gravidade, nem todos os pacientes com HZ em uso das novas terapias para EM têm curso desfavorável, sendo necessários estudos para identificar fatores de risco para as formas graves.

  17. Study on sodium water glass-based anti-reflective film and its application in dye-sensitized solar cells

    International Nuclear Information System (INIS)

    Huang, Q.Z.; Shi, J.F.; Wang, L.L.; Li, Y.J.; Zhong, L.W.; Xu, G.

    2016-01-01

    In this paper, anti-reflective (AR) films are prepared from sodium water glass with a simple dip-coating method. The effects of SiO_2/Na_2O molar ratio, concentration of water glass, and withdrawal speed on the anti-reflection performance of the AR films are systematically studied. The optimized AR film is further applied in dye-sensitized solar cells (DSCs). The optical properties and surface morphology of AR films are analyzed by ultraviolet-visible spectrophotometer, scanning electron microscope, and atomic force microscope. Transmittance of the glass coated with sodium water glass-based AR film is increased by 3.2% when the SiO_2/Na_2O molar ratio, concentration, and withdrawal speed equal to 3.8, 5 wt%, and 80 mm/min, respectively. Under this condition, the thickness of the AR film is 127 nm and the AR film has obvious porous structure. In addition, the power conversion efficiency of DSC coated by AR film is increased from 7.92% to 8.24%, compared with the DSC without AR film. - Highlights: • Anti-reflective films are prepared from sodium water glass. • Transmittance of anti-reflective film is increased by 3.2%. • Efficiency of dye-sensitized cell is improved by anti-reflective film.

  18. Study on sodium water glass-based anti-reflective film and its application in dye-sensitized solar cells

    Energy Technology Data Exchange (ETDEWEB)

    Huang, Q.Z. [Key Laboratory of Renewable Energy, Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510000 (China); University of Chinese Academy of Sciences, Beijing 100049 (China); Shi, J.F., E-mail: shijf@ms.giec.ac.cn [Key Laboratory of Renewable Energy, Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510000 (China); Wang, L.L.; Li, Y.J.; Zhong, L.W. [Key Laboratory of Renewable Energy, Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510000 (China); Xu, G., E-mail: xugang@ms.giec.ac.cn [Key Laboratory of Renewable Energy, Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510000 (China)

    2016-07-01

    In this paper, anti-reflective (AR) films are prepared from sodium water glass with a simple dip-coating method. The effects of SiO{sub 2}/Na{sub 2}O molar ratio, concentration of water glass, and withdrawal speed on the anti-reflection performance of the AR films are systematically studied. The optimized AR film is further applied in dye-sensitized solar cells (DSCs). The optical properties and surface morphology of AR films are analyzed by ultraviolet-visible spectrophotometer, scanning electron microscope, and atomic force microscope. Transmittance of the glass coated with sodium water glass-based AR film is increased by 3.2% when the SiO{sub 2}/Na{sub 2}O molar ratio, concentration, and withdrawal speed equal to 3.8, 5 wt%, and 80 mm/min, respectively. Under this condition, the thickness of the AR film is 127 nm and the AR film has obvious porous structure. In addition, the power conversion efficiency of DSC coated by AR film is increased from 7.92% to 8.24%, compared with the DSC without AR film. - Highlights: • Anti-reflective films are prepared from sodium water glass. • Transmittance of anti-reflective film is increased by 3.2%. • Efficiency of dye-sensitized cell is improved by anti-reflective film.

  19. Baicalin benefits the anti-HBV therapy via inhibiting HBV viral RNAs.

    Science.gov (United States)

    Huang, Hai; Zhou, Wei; Zhu, Haiyan; Zhou, Pei; Shi, Xunlong

    2017-05-15

    Although current antiviral treatments (nucleoside analogs, NAs) for chronic hepatitis B virus (HBV) infection are effective in suppressing HBV-DNA replication, their clinical outcomes can be compromised by the increasing drug resistance and the inefficiency in promoting HBsAg/HBeAg seroconversion. In this study, we will explore possible effects and mechanism of a natural product baicalin (BA) with the anti-HBV efficacy of entecavir (ETV), a first-line anti-HBV drug, in HBV-DNA, HBsAg/HBeAg seroconversion and drug-resistance. The co-effects of BA and ETV were conducted in wild-type/NA-resistance mutant HBV cell lines and DHBV-infected duckling models. HBV-DNA/RNAs, HBsAg/HBeAg, host factors (hepatocyte nuclear factors) were explored for possible anti-HBV mechanism. BA could significantly enhance and reduced HBsAg and HBeAg in hepG2.2.15, a wild-type HBV cell line. Co-treatment of BA and ETV had a more dramatic effect in NA-resistant HBV rtM204V/rtLl80M transfected hepG2 cells. Our study further revealed that BA mainly inhibited the production of HBV RNAs (3.5, 2.4, 2.1kb), the templates for viral proteins and HBV-DNA synthesis. BA blocked HBV RNAs transcription possibly by down-regulating transcription and expression of HBV replication dependent hepatocyte nuclear factors (HNF1α and HNF4α). Thus, BA may benefit the anti-HBV therapy via inhibiting HBV viral RNAs. Copyright © 2017 Elsevier Inc. All rights reserved.

  20. LASERTERAPIA NA INFLAMAÇÃO PULMONAR EXPERIMENTAL EM RATTUS NORVEGICUS OCASIONADO PELA PAPAÍNA

    Directory of Open Access Journals (Sweden)

    Diego Rodrigues Pessoa

    2017-01-01

    Full Text Available Resumo: A Doença Pulmonar Obstrutiva Crônica (DPOC é caracterizada pela limitação do fluxo aéreo decorrente da dilatação dos espaços aéreos distais aos bronquíolos terminais. Analisar os efeitos da laserterapia quanto ao processo cicatricial na lesão pulmonar experimental em Rattus Novergicus. Utilizaram-se trinta animais agrupados em três grupos de dez animais: grupo controle (GC (não recebeu nada, grupo DPOC (GD (foi pulverizado 3 doses de papaína 3mg/kg e grupo DPOC + Laser (GDL (após 7 dias da indução da lesão com papaína foi tratado com laser de 660 nm durante 15 dias.Para analise dos resultados foi realizado o lavado broncoalveolar. Quanto ao Lavado: GC (número de células normais, GD (aumento de células inflamatórias e GDL (diminuição de células inflamatórias. A laserterapia diminui o numero de células inflamatórias, entretanto, não possui efeito reconstrutor do parênquima pulmonar apenas estabiliza a lesão comprovando sua ação anti-inflamatória.

  1. Synthesis and structural characterization of the hexagonal anti-perovskite Na{sub 2}CaVO{sub 4}F

    Energy Technology Data Exchange (ETDEWEB)

    Green, Robert L., E-mail: rgreen@flpoly.org [Chemistry, Florida Polytechnic University, Lakeland, FL 33805 (United States); Avdeev, Maxim [Australian Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, NSW 2232 (Australia); School of Chemistry, The University of Sydney, Sydney, NSW 2006 (Australia); Vogt, Thomas [NanoCenter and Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208 (United States)

    2017-06-15

    The structural details of the ordered hexagonal oxyfluoride Na{sub 2}CaVO{sub 4}F prepared by solid-state synthesis using stoichiometric amounts of V{sub 2}O{sub 5}, CaCO{sub 3}, Na{sub 2}CO{sub 3} and NaF were characterized using high-resolution neutron powder diffraction. The structural changes between 25 °C and 750 °C revealed that the two structural subunits in this material behave different when heated: there is an expansion of the face-shared FNa{sub 4}Ca{sub 2} octahedra while the VO{sub 4} tetrahedra due to increased thermal disorder reveal marginal bond contractions. Bond valences and the global instability index point to significant structural disorder at 750 °C. - Graphical abstract: The structure of the novel oxyfluoride Na{sub 2}CaVO{sub 4}F is studied at room temperature and high-temperatures. The structure can be viewed as layers of compression and elongation of polyhedral subunits, which change as a function of temperature. - Highlights: • The novel oxyfluoride, Na{sub 2}CaVO{sub 4}F, is synthesized via solid-state method. • High-resolution neutron diffraction data is used to analyze the structure of Na{sub 2}CaVO{sub 4}F. • Structural subunits exhibit expansion and contraction with increasing temperature. • Higher temperatures increase instability within the structure of Na{sub 2}CaVO{sub 4}F.

  2. Anti-helmínticos na toxocaríase experimental: efeito na recuperação de larvas de Toxocara canis e na resposta humoral Anthelmintics in experimental toxocariasis: effects on larval recovery of Toxocara canis and on immune response

    Directory of Open Access Journals (Sweden)

    Susana Zevallos Lescano

    2005-02-01

    Full Text Available Estudou-se a recuperação de larvas na fase crônica de camundongos infectados por Toxocara canis, bem como a presença de anticorpos anti-Toxocara após tratamento com ivermectina, mebendazol ou tiabendazol, durante cinco dias consecutivos. Os animais foram sangrados pelo plexo retroorbitário entre 30 e 270 dias após a infecção (DPI. Os soros foram processados pela técnica de enzyme linked immunosorbent assay (ELISA para pesquisa de anticorpos da imunoglobulina da classe G (IgG, utilizando antígeno ES de T. canis. Aos 270 DPI, os animais foram sacrificados para recuperação de larvas no sistema nervoso central, no fígado, nos pulmões e músculos. Os resultados do teste imunoenzimático indicam que, aos 20 dias após tratamento (50 DPI, o nível de anticorpos anti-Toxocara IgG aumentou nos três grupos tratados, mantendo-se elevado ao longo do experimento até o 270º DPI. Em relação aos animais infectados e não-tratados, observou-se decréscimo significativo no número de larvas recuperadas nos animais dos três grupos tratados, não se conseguindo a cura parasitológica. Com este estudo conclui-se que as três drogas utilizadas no experimento têm eficácia similar.The effects of treatment with ivermectin, mebendazole or tiabendazole, during five days, on the larval recovery and immune response to Toxocara canis in experimental chronically infected mice were studied. Animals were bled, using the retro-orbital plexus between the 30th and the 270th days post-infection (Dpi, and sera were processed by ELISA technique for IgG antibodies using ES antigen from T. canis. On day 270 all the animals were killed for larval recovery in the central nervous system, liver, lungs and carcass. Immunoenzimatic test results indicate that 20 days after treatment (50 DPI the anti-Toxocara IgG antibody level increased in the three treated groups and remained elevated until 270 DPI. It was observed a significative decrease in larvae recovered from

  3. Intestinal intraluminal injection of glutamine increases trolox total equivalent antioxidant capacity (TEAC in hepatic ischemia-reperfusion Injeção na luz intestinal de glutamina aumenta a capacidade anti-oxidante total em equivalência ao trolox (TEAC na isquemia-reperfusão hepática

    Directory of Open Access Journals (Sweden)

    Alberto Bicudo Salomão

    2006-01-01

    Full Text Available PURPOSE: To evaluate the effects of intraluminal injection of glutamine on the serum trolox equivalent antioxidant capacity in an experimental model of ischemia-reperfusion of the liver observing the applicability of modifications on the original assay method. METHODS: Thirty Wistar rats underwent laparotomy to perform a 20 cm blind sac of small bowel and occlusion of the hepatic hilo for 30 minutes and reperfusion for 5 minutes. Into the gut sac it was injected glutamine (glutamine group, n=10 or distilled water (control group, n=10. Ten other animals (sham group underwent laparotomy without artery occlusion. Blood samples were collected for trolox equivalent antioxidant capacity assays in different temperature conditions, reagent quantities and time for spectrophotometer readings. RESULTS: Total antioxidant capacity was significantly greater in glutamine group than in both control group (1,60[1,55-1,77] vs 1,44[1,27-1,53] and sham group (1,60[1,55-1,77] vs 1,48[1,45-1,59]. CONCLUSION: Glutamine enhanced serum antioxidant capacity. The assay technique consistently reflected the changes in the antioxidant defenses in this experimental model.OBJETIVO: Avaliar em um modelo experimental de isquemia-reperfusão hepática os efeitos da injeção intraluminal de glutamina na capacidade anti-oxidante total em equivalência ao trolox (TEAC do plasma, verificando a aplicabilidade de modificações ao método original de dosagem. MÉTODOS: Trinta ratos Wistar foram submetidos a laparotomia e confecção de uma alça fechada de 20 cm de comprimento envolvendo o intestinal delgado distal seguido do clampeamento do hilo hepático por 30 minutos e reperfusão por 5 minutos. Na alça fechada foi injetada glutamina (grupo glutamina; n=10 ou água destilada (grupo controle; n=10. Em dez animais (grupo sham não foi realizado clampeamento hilar. Coletou-se sangue para dosagem da capacidade antioxidante total em equivalência ao trolox em condições modificadas

  4. Incremento na dissolução da caffeine em base de ammonium acryloyldimethyltaurate/vp copolymer: desenvolvimento farmacotécnico de géis anti-celulite

    Directory of Open Access Journals (Sweden)

    Éder Menezes Fernandes

    2015-09-01

    Full Text Available A hidrolipodistrofia ginóide (HLDG, popularmente conhecida como “celulite”, consiste em uma alteração patológica do tecido adiposo e da função veno-linfática. Géis contendo caffeine tem sido empregados no tratamento não-invasivo da HLDG, oferecendo resultados satisfatórios a baixos custos. Devido a baixa hidrossolubilidade da caffeine, este gel apresenta como principal inconveniente a formação de precipitados/grumos, oriundos da precipitação da caffeine na base hidrofílica (gel. Este trabalho tem como objetivo o incremento na dissolução da caffeine em gel de Ammonium Acryloyldimethyltaurate/VP Copolymer, através da adição de adjuvantes como o citric acid e o sodium benzoate, além de solução hidroalcoólica, empregada como co-solvente da caffeine. O incremento na dissolução da caffeine foi verificado através da determinação do seu teor nos géis. Além disso, todas as amostras foram submetidas a análises macroscópicas e determinações de pH e viscosidade. A análise macroscópica permitiu a nítida visualização dos precipitados/grumos nos géis preparados sem os adjuvantes, enquanto que o emprego dos mesmos originou géis sem a presença de precipitados. A determinação do teor de caffeine demonstrou que os adjuvantes e co-solvente quase dobraram a concentração deste ativo nos géis. O pH do gel e a concentração de citric acid não influenciaram na dissolução da caffeine. Por outro lado, esses parâmetros influenciaram negativamente na viscosidade dos géis, o que parece ter sido ocasionado pela instabilidade do ammonium acryloyldimethyltaurate/VP copolymer em valores baixos de pH. Com isso, o aumento na dissolução da caffeine no gel anti-celulite parece ter sido ocasionada pela formação de sais hidrossolúveis com os adjuvantes empregados.Palavras-chave: Hidrolipodistrofia ginóide. Gel redutor. Cafeína. Dissolução. ABSTRACTDissolution enhancement of caffeine in the ammonium

  5. Efeito do exercício físico e suplementação de potássio sobre a pressão arterial, metabolismo glicídico e albuminúria de ratos hipertensos

    Directory of Open Access Journals (Sweden)

    Evelyn Manuella Martins Gomes Jodas

    2014-09-01

    Full Text Available Introdução: Ainda é controverso se ocorre sinergismo entre as diferentes medidas não farmacológicas utilizadas no tratamento da hipertensão arterial. Objetivo: Avaliar o efeito do exercício físico aeróbico, da sobrecarga oral de potássio e da sua associação sobre a pressão arterial, metabolismo glicídico, excreção urinária de albumina e morfologia glomerular de ratos espontaneamente hipertensos (SHR. Métodos: SHRs foram divididos em: Grupo Controle (SHR; dieta padrão e sedentário, n = 10; Grupo Exercício (SHR + E; treinado em esteira rolante, dieta padrão, n = 10, Grupo Potássio (SHR + K; sedentário, dieta rica em potássio, n = 10 e Grupo Exercício + Potássio (SHR + E + K; exercitado, dieta rica em potássio, n = 10. Semanalmente, foi aferido o peso corporal (PC e a pressão arterial de cauda (PAC. Ao final de 16 semanas, foi realizado o Teste de Tolerância oral a Glicose. A albuminúria foi determinada nos períodos basal, na 8ª e 16ª semana. Após o sacrifício, foi realizada a análise do índice de esclerose glomerular e a pesagem da gordura visceral. Resultados: A PAC e o PC não variaram significativamente. Houve melhora da sensibilidade à insulina no Grupo Exercício e Grupo Potássio, mas não no Grupo Exercício + Potássio. Na 16ª semana, a albuminúria de todos os grupos foi significativamente menor que o grupo SHR Controle. O índice de esclerose glomerular e o peso da gordura visceral também foram significativamente menores em todos os grupos tratados quando comparados ao controle. Conclusão: A dieta rica em potássio e o exercício físico determinaram melhora no metabolismo glicídico, na albuminúria e na morfologia glomerular, porém, a sobreposição dos tratamentos não apresentou sinergismo.

  6. Significado prognóstico dos graus histológicos do linfoma de Hodgkin do tipo esclerose nodular Prognostic significance of histopathological grading of nodular sclerosing Hodgkin’s lymphoma

    Directory of Open Access Journals (Sweden)

    Luís Fernando Pracchia

    2005-10-01

    Full Text Available INTRODUÇÃO: A esclerose nodular (EN, do tipo histológico freqüente do linfoma de Hodgkin (LH, apresenta grande variabilidade em sua composição celular. Na década de 80, pesquisadores do British National Lymphoma Investigation (BNLI propuseram uma subclassificação histológica do LH EN. Eles identificaram dois graus histológicos - o LH EN grau I (LH EN I e o LH EN grau II (LH EN II - e demonstraram que os portadores de LH EN II apresentavam menor sobrevida em comparação aos portadores de LH EN I. Outros estudos, entretanto, não reproduziram esses achados. OBJETIVO: Avaliar o significado prognóstico da graduação histológica proposta pelo BNLI. MATERIAIS E MÉTODOS: Estudo retrospectivo que incluiu 69 casos de LH EN. Mais de 90% dos casos foram tratados com terapia combinada ou quimioterapia exclusiva, não havendo diferença no tipo de tratamento oferecido a depender do grau histológico. RESULTADOS: Trinta e cinco casos (51% foram classificados com EN I e 34 (49% como EN II. Não observamos diferenças na distribuição de outros fatores prognósticos entre os portadores dos dois graus. Remissão completa após o tratamento inicial foi obtida em 85,7% dos casos de EN I e em 82,4% dos casos de EN II (p = 0,75. A probabilidade estimada de sobrevida global em cinco anos foi de 67% para EN I e de 83,5% para EN II (p = 0,13 e a taxa de sobrevida livre de doença em cinco anos foi de 85,2% versus 87%, respectivamente (p = 0,72. CONCLUSÃO: Nesta população de pacientes uniformemente tratados a graduação histológica BNLI não esteve associada com o prognóstico do LH EN.BACKGROUND: Nodular sclerosis (NS, a frequent histological subtype of Hodgkin’s lymphoma (HL, presents great variability in its cellular composition. In the 80's, researchers of the British National Lymphoma Investigation (BNLI proposed a histological-based subclassification for NS HL. They identified two histological grades - NS HL grade I (NS HL I and NS HL grade

  7. [Hepatitis B infection transmission by anti-HBc-positive grafts].

    Science.gov (United States)

    Bárcena, Rafael

    2014-07-01

    In Spain, the rate of anti-HBc positive, HBsAg-negative carriers is approximately 10% of adults between the ages of 26 and 65 years. It is therefore impossible to exclude these donors without increasing the mortality of recipients on waiting lists. The incidence of de novo hepatitis B infection in HBsAg-negative recipients of anti-HBc-positive donors is high without prophylaxis and is related to the serological state of the recipient against HBV. Anti-HBc and anti-HBs-positive recipients have low risk, with or without prophylaxis. This patient group therefore does not require prophylaxis but rather periodic posttransplantation checkups. For the other recipient groups (naïve, anti-Hbc and anti-HBs isolates), prophylaxis with IgG HB, lamivudine or combined therapy decreases the incidence of infection. These patients should be treated with prophylaxis immediately after transplantation. Depending on the risk, cost and benefit, patients should currently be treated with lamivudine 100mg/d indefinitely or for longer periods (>10 years). Periodic checkups of HBsAg should be conducted, and if there is graft dysfunction then HBV DNA should be checked. IF HBV DNA is discovered in the donor and found to be positive in serum or in the biopsy, the prophylaxis should be an analogue with a high barrier to resistance from the start. Grafts from anti-HBc-positive donors are not considered at-risk grafts and are used according to donor severity, without being determined by the recipient's serological profile. Copyright © 2014 Elsevier España, S.L. All rights reserved.

  8. Neuropsychological heterogeneity in multiple sclerosis / Heterogeneidade neuropsicológica na esclerose múlipla

    Directory of Open Access Journals (Sweden)

    Eduardo de Paula Lima

    2008-01-01

    Full Text Available Multiple sclerosis (MS is a progressively disabling neurological disease which symptoms affect sensory, motor and psychological functioning. Several clinical neurological and psychological variables influence the neuropsychological profile in MS, which is extremely heterogeneous. The main objective of the present study was to investigate if it is possible to statistically stratify control subjects and MS patients from neurological, socio-demographic and neuropsychological dimensions. With this purpose we applied cluster analysis procedures to five neuropsychological instruments selected according to diagnostic accuracy from a pool of 9 neuropsychological tests. The sample was composed of 45 healthy controls and 35 MS patients with similar socio-demographic characteristics. The results indicated an ideal solution with 4 different clusters according to two dimensions: "cognitive" and "psychosocial" functioning, which represent independent but non-disjunctive aspects of neuropsychological functioning in MS.

  9. Silicon content design of CrSiN films for good anti-corrosion and anti-wear performances in NaOH solution

    Science.gov (United States)

    Wang, Haixin; Ye, Yuwei; Wang, Chunting; Zhang, Guangan; Liu, Wei

    2018-06-01

    The CrSiN films with different silicon contents were fabricated by medium frequency magnetron sputtering. The 304L stainless steel and Si (1 0 0) wafer were used for substrate specimens. Film plasticity, corrosion and tribological behaviors in 0.1 M NaOH solution were systematically investigated. Results show that the plasticity of CrN film could be improved by the addition of silicon. During the corrosion test, with the increase of silicon content, the corrosion current density exhibited a descending trend and impedance presented a rising trend. The COF and wear rate of as-prepared CrSiN film initially decreased and then increased as the silicon content increased. The CrSiN film with 12.7 at.% Si exhibited the lowest COF of 0.04 and a wear rate of 6.746  ×  10‑8 mm3 Nm‑1 in 0.1 M NaOH solution.

  10. Papel da ouabaína endógena sobre o sistema cardiovascular do modelo de hipertensão arterial DOCA-SAL.

    OpenAIRE

    Camilla Ferreira Wenceslau

    2012-01-01

    Tem sido demonstrado que na hipertensão arterial ocorre aumento de ouabaína plasmática, um inibidor da Na+K+-ATPase. Em 1998, Ferrari et al. desenvolveram uma molécula denominada de rostafuroxina, a qual é capaz de antagonizar os efeitos da ouabaína por deslocar a ligação desse glicosídeo com a Na+K+-ATPase. Dentro desse contexto, parece razoável sugerir que um anti-hipertensivo capaz de antagonizar os efeitos da ouabaína possa representar uma nova ferramenta farmacológica para o tratamento d...

  11. Tratamento com antiinflamatórios tópicos na osteoartrite de joelho Topical anti-inflammatory drugs in osteoarthritis of the knee

    Directory of Open Access Journals (Sweden)

    Helena Lúcia Alves Pereira

    2006-06-01

    Full Text Available Os antiinflamatórios não-esteroidais (AINEs orais são eficazes no alívio da dor na osteoartrite (OA, porém têm o risco de efeitos adversos sistêmicos. Para diminuir a toxicidade é necessário reduzir a concentração plasmática uma vez que os efeitos adversos são dose-dependentes. Os AINEs de uso tópico, em teoria, alcançam altas concentrações nos tecidos-alvo com concentrações plasmáticas baixas, sendo portanto uma alternativa terapêutica, especialmente para pacientes de risco. Nossa revisão dos ensaios clínicos randomizados mostrou que os AINEs tópicos foram mais efetivos que o placebo e tão eficazes quanto os AINEs orais. Porém, o pequeno número de ensaios e falhas na metodologia nos impossibilita de fazer conclusões definitivas, sendo necessários estudos bem desenhados e de maior duração.Oral non-steroidal anti-inflammatories drugs (NSAIDs are effective in pain relief in osteoarthritis (OA, but are also associated with risks of adverse systemic side effects. In order to reduce its toxicity, it would be desirable to decrease the plasmatic levels of NSAIDs since those side effects are dose-dependent. Topical NSAIDs would be a therapeutic alternative in theory, because while they reach high levels in local tissues, they also produce low plasmatic levels. Our review analyzed clinical randomized and shown that topical NSAIDs were superior to placebo and have similar efficacy to oral NSAIDs, but due a few number of trials and methodological weaknesses we can't make definitive conclusions. Further well designed, long term studies are required.

  12. Isolation and Identification of a Flavone Apigenin from Marine Red Alga with Antinociceptive and Anti-Inflammatory Activities

    Directory of Open Access Journals (Sweden)

    Gihan A. El Shoubaky

    2016-01-01

    Full Text Available Physicochemical investigation of the red alga Acanthophora spicifera (Vahl Borgesen, collected from Al-Shoaiba coast, Red Sea, Saudi Arabia, led to the isolation of a flavone from the algal tissue with acetone. Preparative chromatography on silica gel thin-layer chromatography was used for the separation of the flavone and eluted with the methanol:chloroform:ethyl acetate (1:7:2 solvent system. The physicochemical analyses infrared, mass spectra, and ultraviolet spectra in addition to shift reagents (NaOMe, NaOAc, NaOAc + H 3 BO 3 , AlCl 3 , and AlCl 3 + HCl were used for the identification and elucidation of the structure of the flavone compound (4,5,7-trihydroxy flavonoids. The flavone compound was identified as apigenin bycomparing its physicochemical data with those in the literature. Analgesic and anti-inflammatory activities of apigenin were evaluated. Apigenin showed promising analgesic and anti-inflammatory activities in the hot plate test and writhing test in mice as well as tail-immersion tests and carrageenan-induced paw edema and cotton pellet-induced granuloma formation in rats. It is concluded that apigenin possesses potent analgesic, anti-inflammatory, and antiproliferative activities, which might be due to the inhibition of PGE 2 as well as proinflammatory cytokines such as interleukin-1β, interleukin-6, and tumor necrosis factor- α.

  13. Effects of Anti-VEGF on Predicted Antibody Biodistribution: Roles of Vascular Volume, Interstitial Volume, and Blood Flow

    Science.gov (United States)

    Boswell, C. Andrew; Ferl, Gregory Z.; Mundo, Eduardo E.; Bumbaca, Daniela; Schweiger, Michelle G.; Theil, Frank-Peter; Fielder, Paul J.; Khawli, Leslie A.

    2011-01-01

    Background The identification of clinically meaningful and predictive models of disposition kinetics for cancer therapeutics is an ongoing pursuit in drug development. In particular, the growing interest in preclinical evaluation of anti-angiogenic agents alone or in combination with other drugs requires a complete understanding of the associated physiological consequences. Methodology/Principal Findings Technescan™ PYP™, a clinically utilized radiopharmaceutical, was used to measure tissue vascular volumes in beige nude mice that were naïve or administered a single intravenous bolus dose of a murine anti-vascular endothelial growth factor (anti-VEGF) antibody (10 mg/kg) 24 h prior to assay. Anti-VEGF had no significant effect (p>0.05) on the fractional vascular volumes of any tissues studied; these findings were further supported by single photon emission computed tomographic imaging. In addition, apart from a borderline significant increase (p = 0.048) in mean hepatic blood flow, no significant anti-VEGF-induced differences were observed (p>0.05) in two additional physiological parameters, interstitial fluid volume and the organ blood flow rate, measured using indium-111-pentetate and rubidium-86 chloride, respectively. Areas under the concentration-time curves generated by a physiologically-based pharmacokinetic model changed substantially (>25%) in several tissues when model parameters describing compartmental volumes and blood flow rates were switched from literature to our experimentally derived values. However, negligible changes in predicted tissue exposure were observed when comparing simulations based on parameters measured in naïve versus anti-VEGF-administered mice. Conclusions/Significance These observations may foster an enhanced understanding of anti-VEGF effects in murine tissues and, in particular, may be useful in modeling antibody uptake alone or in combination with anti-VEGF. PMID:21436893

  14. Brasília – DF Maio/2013 PTC 13/2013 PARECER TÉCNICO SOBRE PROMOÇÃO DA ADESÃO AO TRATAMENTO MEDICAMENTOSO ANTI- HIPERTENSIVO

    NARCIS (Netherlands)

    Stein, A.; Jornada Ben, A.; Coffy, Leila

    2013-01-01

    Tecnologia Abordagem Centrada na Pessoa Caracterização da tecnologia Esse parecer propõe avaliar o nível de recomendação da abordagem centrada na pessoa em relação à adesão ao tratamento medicamentoso anti-hipertensivo. Perguntas A abordagem centrada na pessoa promove a adesão ao tratamento

  15. Isolation of a human anti-epidermal growth factor receptor Fab antibody, EG-19-11, with subnanomolar affinity from naïve immunoglobulin repertoires using a hierarchical antibody library system.

    Science.gov (United States)

    Hur, Byung-ung; Yoon, Jae-bong; Liu, Li-Kun; Cha, Sang-hoon

    2010-11-30

    Specific antibodies that possess a subnanomolar affinity are very difficult to obtain from human naïve immunoglobulin repertoires without the use of lengthy affinity optimization procedures. Here, we designed a hierarchical phage-displayed antibody library system to generate an enormous diversity of combinatorial Fab fragments (6×10(17)) and attempted to isolate high-affinity Fabs against the human epidermal growth factor receptor (EGFR). A primary antibody library, designated HuDVFab-8L, comprising 4.5×10(9) human naïve heavy chains and eight unspecified human naïve light chains was selected against the EGFR-Fc protein by biopanning, and four anti-EGFR Fab clones were isolated. Because one of the Fab clones, denoted EG-L2-11, recognized a native EGFR expressed on A431 cells, the heavy chain of the Fab was shuffled with a human naïve light chain repertoire with a diversity of 1.4×10(8) and selected a second time against the EGFR-Fc protein again. One EG-L2-11 variant, denoted EG-19-11, recognized an EGFR epitope that was almost the same as that bound by cetuximab and had a K(D) of approximately 540 pM for soluble EGFR, which is about 7-fold higher than that of the FabC225 derived from cetuximab. This variant was also internalized by A431 cells, likely via receptor-mediated endocytosis, and it efficiently inhibited EGF-mediated tyrosine phosphorylation of the EGFR. These results demonstrate that the use of our hierarchical antibody library system is advantageous in generating fully human antibodies especially with a therapeutic purpose. Copyright © 2010 Elsevier B.V. All rights reserved.

  16. Producción y caracterización de un anticuerpo policlonal dirigido contra la fosfoproteína del virus de la rabia

    Directory of Open Access Journals (Sweden)

    Nadia Yadira Castañeda

    2007-06-01

    Materiales y métodos. El gen P que codifica para la proteína P del virus de la rabia, fue amplificado por reacción en cadena de la polimerasa de transcriptasa reversa y clonado en el vector de expresión PinPointTM Xa-1 T (PROMEGA. La proteína recombinante P fue expresada en E. coli purificada por cromatografía de afinidad y usada para la producción del anticuerpo policlonal anti-P. El anticuerpo obtenido fue purificado y caracterizado por inmunocitoquímica con un sistema enzimático, inmunofluorescencia, Cell-ELISA fluorométrica y Western blotting. Resultados. La proteína recombinante se expresó eficientemente como una proteína de fusión biotinilada de aproximadamente 50 kd, que corresponde a la forma completa de la proteína P del virus de la rabia. El anticuerpo policlonal anti-P detectó con alta especificidad la proteína P en cultivos de neuronas sensoriales infectados con el virus de la rabia. Conclusión. La proteína P recombinante expresada en E. coli se constituyó en un antígeno específico para producir un anticuerpo policlonal que reconoce la proteína P nativa en células infectadas con el virus de la rabia.

  17. Anti-S1P Antibody as a Novel Therapeutic Strategy for VEGFR TKI-Resistant Renal Cancer.

    Science.gov (United States)

    Zhang, Liang; Wang, Xiaoen; Bullock, Andrea J; Callea, Marcella; Shah, Harleen; Song, Jiaxi; Moreno, Kelli; Visentin, Barbara; Deutschman, Douglas; Alsop, David C; Atkins, Michael B; Mier, James W; Signoretti, Sabina; Bhasin, Manoj; Sabbadini, Roger A; Bhatt, Rupal S

    2015-04-15

    VEGFR2 tyrosine kinase inhibition (TKI) is a valuable treatment approach for patients with metastatic renal cell carcinoma (RCC). However, resistance to treatment is inevitable. Identification of novel targets could lead to better treatment for patients with TKI-naïve or -resistant RCC. In this study, we performed transcriptome analysis of VEGFR TKI-resistant tumors in a murine model and discovered that the SPHK-S1P pathway is upregulated at the time of resistance. We tested sphingosine-1-phosphate (S1P) pathway inhibition using an anti-S1P mAb (sphingomab), in two mouse xenograft models of RCC, and assessed tumor SPHK expression and S1P plasma levels in patients with metastatic RCC. Resistant tumors expressed several hypoxia-regulated genes. The SPHK1 pathway was among the most highly upregulated pathways that accompanied resistance to VEGFR TKI therapy. SPHK1 was expressed in human RCC, and the product of SPHK1 activity, S1P, was elevated in patients with metastatic RCC, suggesting that human RCC behavior could, in part, be due to overproduction of S1P. Sphingomab neutralization of extracellular S1P slowed tumor growth in both mouse models. Mice bearing tumors that had developed resistance to sunitinib treatment also exhibited tumor growth suppression with sphingomab. Sphingomab treatment led to a reduction in tumor blood flow as measured by MRI. Our findings suggest that S1P inhibition may be a novel therapeutic strategy in patients with treatment-naïve RCC and also in the setting of resistance to VEGFR TKI therapy. ©2015 American Association for Cancer Research.

  18. Redução na concentração de glicose no cérebro de camundongos inoculados com liquido cefalorraquiano de pacientes com esclerose lateral amiotrófica

    Directory of Open Access Journals (Sweden)

    J. M. Godoy

    1990-12-01

    Full Text Available Os autores analisam, por técnica cromatográfica, as concentrações de glicose no cérebro de camundongos inoculados com L.CR de 4 pacientes com ELA. Foi encontrada redução na, concentração do carboidrato no material estudado, sugerindo a presença de fator extrínseco veiculado pelo LCR.

  19. Corrosion behavior of novel imitation-gold copper alloy with rare earth in 3.5% NaCl solution

    International Nuclear Information System (INIS)

    Chen, J.L.; Li, Z.; Zhu, A.Y.; Luo, L.Y.; Liang, J.

    2012-01-01

    Highlights: → The design alloy has better anti-tarnish property than that of H7211 alloy during salt-spray test. → The corrosion rate of design alloy is much lower than that of H7211 alloy as immersed in NaCl solution. → In the low frequency region, the capacitive behavior normally faded and diffusion process had a key role. → In the medium frequency region, the Bode pattern showed a capacitive behavior. -- Abstract: A novel imitation-gold copper alloy with rare earth was designed and prepared. The corrosion behavior of the alloy immersed in 3.5% NaCl solution and its anti-tarnish property in the salt spray for different days has been studied. The designed alloy (CuZnAlNiMeRe) has more excellent anti-tarnish property and lower corrosion rate than those of currency coinage materials of H7211 alloy (used in China). A uniform and compact of corrosion film has been formed after the designed alloy immersed in 3.5% NaCl solution. The corrosion current densities I corr of the alloy decreased while the polarization resistance R p increased with time. The capacitance of the corrosion product film C film of the alloy decreased while the charge transfer resistance R ct . The Warburg diffusion impedance W R and the resistance of the equivalent circuit R increased with time.

  20. Anti-Candida albicans biofilm effect of novel heterocyclic compounds.

    Science.gov (United States)

    Kagan, Sarah; Jabbour, Adel; Sionov, Edward; Alquntar, Abed A; Steinberg, Doron; Srebnik, Morris; Nir-Paz, Ran; Weiss, Aryeh; Polacheck, Itzhack

    2014-02-01

    The aims of this study were to develop new anti-biofilm drugs, examine their activity against Candida albicans biofilm and investigate their structure-activity relationship and mechanism of action. A series of thiazolidinedione and succinimide derivatives were synthesized and their ability to inhibit C. albicans biofilm formation and destroy pre-formed biofilm was tested. The biofilms' structure, metabolic activity and viability were determined by XTT assay and propidium iodide and SYTO 9 live/dead stains combined with confocal microscopic analysis. The effect of the most active compounds on cell morphology, sterol distribution and cell wall morphology and composition was then determined by specific fluorescent stains and transmission electron microscopy. Most of the compounds were active at sub-MICs. Elongation of the aliphatic side chain resulted in reduced anti-biofilm activity and the sulphur atom contributed to biofilm killing, indicating a structure-activity relationship. The compounds differed in their effects on biofilm viability, yeast-to-hyphal form transition, hyphal morphology, cell wall morphology and composition, and sterol distribution. The most effective anti-biofilm compounds were the thiazolidinedione S8H and the succinimide NA8. We developed novel anti-biofilm agents that both inhibited and destroyed C. albicans biofilm. With some further development, these agents might be suitable for therapeutic purposes.

  1. The structure of Na sub 3 H sub 2 As sub 3 O sub 10. Structure d'un triarseniate: Na sub 3 H sub 2 As sub 3 O sub 10

    Energy Technology Data Exchange (ETDEWEB)

    Driss, A.; Jouini, T. (Tunis Univ. (Tunisia). Dept. de Chimie)

    1990-07-15

    Na{sub 3}H{sub 2}As{sub 3}O{sub 10}, M{sub r}=455.75, monoclinic, C2/c, a=10.860 (3), b=9.323 (3), c=18.270 (5) A, {beta}=103.00 (2)deg, V=1802 (1) A{sup 3}, Z=8, D{sub x}=3.27, D{sub m} (in bromobenzene) = 3.30 Mg m{sup -3}, {lambda}(Mo K anti {alpha})=0.7107 A, {mu}=11.5 mm{sup -1}, F(000)=1712, room temperature, final R=0.035 and wR=0.038 for 578 reflections. This structure contains a triarsenate anion H{sub 2}As{sub 3}O{sub 10}{sup 3-} formed from three AsO{sub 4} tetrahedra pointing in the same direction. They are connected by hydrogen bonds to form layers parallel to held (10anti 1) together by interleaved Na{sup +} cations. Only few triarsenate structures are known. The corresponding phosphate is unknown. An explanation is proposed. (orig.).

  2. Preparation and RGB upconversion optic properties of transparent anti-counterfeiting films.

    Science.gov (United States)

    Yao, Weijing; Tian, Qingyong; Liu, Jun; Xue, Qingwen; Li, Mengxiao; Liu, Li; Lu, Qiang; Wu, Wei

    2017-10-26

    Advanced anti-counterfeiting labels have aroused an intensive interest in packaging industry to avoid the serious issue of counterfeit. However, the preparation and cost of the existing labels associated with the drawbacks, including the complex and high-cost equipment, limit the protection of the authenticity of goods. Herein, we developed a series of anti-counterfeiting labels based on multicolor upconversion micro-particles (UCMPs) inks via straightforward and low-cost solutions, including spin-coating, stamping and screen printing. The UCMPs were synthesized through a facile hydrothermal process and displayed tunable red (R), green (G) and blue (B) color by doping different lanthanide ions, which are Er 3+ /Tm 3+ , Yb 3+ /Er 3+ and Yb 3+ /Tm 3+ in NaYF 4 hosts, respectively. The optimal UCMPs inks were deposited on a flexible polyethylene terephthalate (PET) substrate to obtain transparent anti-counterfeiting labels possessing higher transmittance, stronger upconversion fluorescence intensity and good photostability. Under ambient conditions, the patterns and films were transparent, but could exhibit multicolor light under 980 nm laser excitation. They can be used as anti-counterfeiting labels for die-cutting packages to further elevate the security of goods. The tunable and designable transparent anti-counterfeiting labels based on RGB UCMPs inks exhibit the merits of low-cost, easy-manufacture and versatility, underlying the practical application in the field of anti-counterfeiting.

  3. Produção de anticorpos policlonais anti-ricina Production of polyclonal anti-ricin antibodies

    Directory of Open Access Journals (Sweden)

    Roselayne Ferro Furtado

    2011-02-01

    Full Text Available A ricina é uma proteína bastante tóxica presente nas sementes de mamona que impossibilita o uso da torta de mamona "in natura", como ração. A torta de mamona destoxificada necessita ainda de métodos de análise que garantam a ausência de traços dessa proteína. Objetivou-se, neste trabalho, produzir e avaliar a sensibilidade e especificidade de anticorpos policlonais anti-ricina, para serem empregados como possíveis componentes de métodos sorológicos na detecção de ricina em torta de mamona destoxificada. Foram avaliadas três doses da proteína: 400, 180 e 100 µg cada uma dividida em duas aplicações em coelhos. A primeira dose foi injetada no animal no início do experimento e a segunda após 21 dias. O método de ELISA indicou que as duas doses menores (100 e 180 µg induziram respostas imunológicas primária e secundária com produção de anticorpos específicos. Enquanto a dose maior (400 µg de ricina apresentou uma resposta primária com elevação dos títulos de anticorpos, seguida de uma supressão da resposta. Esse perfil é sugestivo de tolerância imunológica. Pela técnica de Western blotting verificou-se que os anticorpos policlonais produzidos são bastante específicos para a ricina, no entanto, por detectarem ricina na forma nativa e desnaturada não são recomendados para o monitoramento de ricina em torta de mamona destoxificada por tratamento térmico.Ricin is a very toxic protein found in castor bean plants, making it impossible to use natural castor cake as animal food. The detoxificated castor cake needs to be analyzed by methods that ensure the absence of traces of this protein. This work had the objective to produce and to evaluate the sensitivity and specificity of anti-ricin polyclonal antibodies, to be employed as component of sorologic methods as the ELISA in the detection of ricin in detoxificated castor cake. Three doses of protein, 400, 180 and 100 µg were evaluated each one injected twice into

  4. Anticuerpos policlonales contra la proteína recombinante NS3 del virus del dengue

    Directory of Open Access Journals (Sweden)

    Liliana Morales

    2017-01-01

    Resultados. Los anticuerpos producidos fueron útiles en ensayos de Western blot e inmunofluorescencia y se reportó por primera vez un anticuerpo policlonal anti-NS3 que permitió la inmunoprecipitación de la proteína viral y la detecta con Western blot sin necesidad de inducir sobreexpresión de NS3 o de usar extractos de células marcados metabólicamente con radioisótopos. Conclusión. Las proteínas recombinantes expresadas y los anticuerpos producidos constituyen herramientas valiosas para estudiar procesos infecciosos del DENV que involucren a la proteína NS3 y evaluar pruebas dirigidas a interferir las funciones de esta proteína.

  5. Expression of Insoluble Influenza Neuraminidase Type 1 (NA1 Protein in Tobacco

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    Teen Lee Pua

    2012-12-01

    Full Text Available The avian influenza virus, particularly H5N1 strain, is highly virulent to poultry and mankind. Several expression systems, like yeast, baculovirus and mammalian cells, have been adopted to produce vaccine candidate for this lethal disease. The present research aimed at developing a recombinant vaccine candidate, neuraminidase type 1 (NA1, for the Malaysia isolate of H5N1 in Nicotiana benthamiana. The NA1 gene was fused directly in-frame in cowpea mosaic virus (CPMV-based pEAQ-HT vector with C-terminal polyhistidine-tag incorporated to ease the subsequent purification step. The expression of the NA1 gene in tobacco was confirmed at RNA and protein levels at 6 days post-infiltration (Dpi. From the insoluble fraction of the protein, a recombinant glycosylated NA1 protein with a molecular weight of ~56 kDa was immunogenically detected by a specific anti-NA polyclonal antibody. We report for the first time the insolubility of the plant-made NA1 protein where a native sequence was used for its expression. This study signifies the necessity of the use of optimised sequences for expression work and provides great opportunity for the exploration of plant-manufactured NA1 protein as vaccine candidate.

  6. Fatores de risco e medidas profiláticas nas pneumonias adquiridas na comunidade Risk factors and prophylaxis of community-acquired pneumonias

    Directory of Open Access Journals (Sweden)

    LUCY GOMES

    2001-03-01

    Full Text Available Este artigo revisa os efeitos do envelhecimento, tabagismo, DPOC, insuficiência cardíaca, colonização da orofaringe, aspiração (micro e macro, alcoolismo, cirrose hepática, deficiência nutricional, imunossupressão e fatores ambientais sobre o risco de adquirir pneumonia na comunidade e sua gravidade. Na segunda parte, é feita revisão sobre a ação profilática das vacinas antiinfluenza e antipneumococo, assim como a ação das drogas antivirais, na profilaxia e tratamento das pneumonias adquiridas na comunidade.This article reviews the effects of aging, tobacco-smoking, chronic bronchitis and emphysema, heart failure, oropharyngeal colonization, aspiration (micro and macro, alcoholism, hepatic cirrhosis, nutritional deficiency, immunosuppression, and environmental factors on the risk of community-acquired pneumonia and its severity. In the second part, the authors review the prophylactic action of anti-influenza and anti-pneumococcus vaccines as well as the role of prevention and treatment of antiviral agents in community-acquired pneumonia.

  7. [Analytic study of dot blotting for the detection of anti-Jo-1, anti-M2, anti-ribosomes and anti-LKM].

    Science.gov (United States)

    Huguet, S; Sghiri, R; Ballot, E; Johanet, C

    2004-01-01

    The Cyto-Dot 4 HM043 kit commercialised by BMD, has replaced the Cyto-Dot HM010 kit that allowed three auto-antibodies detection (anti-Jo-1, anti-M2 and anti-ribosomal protein). Detection of anti-LKM1 auto-antibody was added. These four auto-antibodies have in common only the intracytoplasmic localisation of their respective antigen. The aim of our study was to evaluate this new kit using 104 sera and to compare our results with reference techniques (indirect immunofluorescence IF for anti-M2, anti-ribosomal protein and anti-LKM1, double immunodiffusion ID for anti-Jo-1 and anti-LKM1, western blotting WB for anti-M2) and with Cyto-Dot HM010. The one hundred and four sera were divided into five groups: Group I (n = 12) with anti-Jo-1 detected by ID; Group II (n = 28) with 26 anti-M2 positive by IF and WB, 2 anti-M2 positive only by WB; Group III (n = 10) with anti-ribosomal protein detected by IF 5 of which precipitated by ID; Group IV (n = 32) with anti-LKM1 by IF and ID divided into 18 AIH2 and 14 HCV; Group V (n = 22) consisting of 14 healthy individuals and 8 patients with hypergammaglobulinemia. Results of this study are similar to those of Cyto-Dot HM010 for the three auto-antibodies already in use. Cyto-Dot 4 is a very good anti-LKM1 confirmation method as it is ID. Copyright John Libbey Eurotext 2003.

  8. Transplante de células tronco hematopoéticas para doenças auto-imunes no Brasil Hematopoietic stem cell transplantation for autoimmune diseases in Brazil

    Directory of Open Access Journals (Sweden)

    Júlio C. Voltarelli

    2002-03-01

    Full Text Available O transplante de células progenitoras hematopoéticas apresenta bases sólidas para ser indicado no tratamento das doenças autoimunes. No relato são apresentados estes dados e a seqüência de eventos que tem contribuído para a implantação de um protocolo brasileiro do procedimento na modalidade autogênica utilizando regimes de mobilização uniforme com Ciclofosfamida 2g/m2 mais fator estimulador de colônias granulocitárias e condicionamentos particulares para o lúpus eritematoso sistêmico, esclerose sistêmica e esclerose múltipla. As entidades descritas anteriormente foram escolhidas para o início do protocolo cooperativo após amplos debates em encontros ocorridos em Ribeirão Preto e São Francisco, EUA.Hematopoietic Stem Cell Transplantation presents a solid basis to be indicated for the treatment of autoimmune diseases. In this work data related to the procedure and the sequence of events which have contributed to the implantation of a Brazilian protocol are discussed. Included is a discussion of the autogenic procedure using uniform mobilization regimens with Cyclophosphamide 2g/m2 plus granulocyte-colony stimulation factor and particular conditioning for systemic lupus erythematosus, systemic sclerosis and multiple sclerosis. The formerly described entities were chosen for the beginning of a cooperative protocol after wide-ranging debates which took place both in Ribeirão Preto and San Francisco, USA.

  9. Messung der semileptonischen $\\Xi^{0}$-Zerfälle mit dem NA48/1-Detektor

    CERN Document Server

    Moosbrugger, Ulrich

    2005-01-01

    In 2002 a high intensity data acquisition for K_S mesons and neutral hyperons was performed by the NA48/1 experiment, in which about 10^9 Xi^0 decay candidates were recorded. Within this work 6657 Xi^0 -> Sigma^+ e^- anti-nu and 581 anti-Xi^0 -> anti-Sigma^+ e^+ nu events were selected from that data sample and the branching ratios BR1(Gamma(Xi^0 -> Sigma^+ e^- anti-nu)/Gamma(Xi^0 total))=( 2.533 +-0.032(stat) -0.076+0.089(syst) )10^-4 and BR2(Gamma(anti-Xi^0 -> anti-Sigma^+ e^+ nu)/Gamma(Anti-Xi^0 total))= ( 2.57 +-0.12(stat) -0.09+0.10(syst) )10^-4 were determined. The result for BR1 is 3.5 times more precise than the previously published measurement. The analysis of anti-Xi^0-beta decays is the first measurement of BR2. Both results agree with the theoretical prediction of 2.6*10^-4. From BR1, the CKM matrix element |Vus| = 0.209 +- 0.004(exp) +- 0.026(syst) was determined by using the experimental value for the form factor ratio g1/f1. The dominant uncertainty is given by the error on g1/f1. Besides, 99 X...

  10. Reatividade do anticorpo IgM anti-Treponema pallidum na soroconversão e na resposta sorológica ao tratamento de sífilis IgM antibody reactivity to Treponema pallidum in seroconversion and in the serologic response to syphilis treatment

    Directory of Open Access Journals (Sweden)

    Neuza Satomi Sato

    2012-12-01

    Full Text Available INTRODUÇÃO: A utilidade da detecção de anticorpos da imunoglobulina da classe M (IgM no diagnóstico da sífilis tem sido discutida há tempos. OBJETIVO: No presente estudo foi analisada a ocorrência de anticorpo IgM anti-T. pallidum (Tp-IgMAc nas amostras de pacientes com sífilis recente, na fase de soroconversão e no monitoramento da resposta sorológica pós-tratamento. MÉTODOS: Amostras séricas de 11 indivíduos. RESULTADOS: Na soroconversão, o Tp-IgMAc foi detectado nas amostras de 10 indivíduos, e em um paciente a reatividade IgM ocorreu anteriormente ao Venereal Disease Research Laboratory (VDRL. A sororreversão foi evidenciada nas amostras de três pacientes com sífilis secundária tratada, e em um indivíduo com reinfecção. CONCLUSÃO: A detecção de Tp-IgMAc mostrou ser um potencial marcador diagnóstico de sífilis ativa e o desempenho do ensaio imunoenzimático de captura de IgM (ELISA-IgM para o monitoramento pós-tratamento foi similar ao da VDRL.INTRODUCTION: The appropriateness of IgM antibody detection in the diagnosis of syphilis has been extensively discussed. OBJECTIVE: This study aimed at assessing the detection of anti-T. pallidum IgM antibody (TP-IgMAb in serum samples from patients with recent syphilis in seroconversion and in the monitoring of post-treatment serological response. METHODS: Serum samples from 11 individuals. RESULTS: At seroconversion, positive Tp-IgMAb was detected in 10 samples and IgM reactivity previous to Venereal Disease Research Laboratory (VDRL was detected in one sample. Seroreversion was found in samples from three treated patients with secondary syphilis and in one individual with reinfection. CONCLUSION: Tp-IgMAb detection proved to be a potential diagnostic marker for active syphilis, and IgM capture enzyme linked immunosorbent assay (ELISA-IgM performance was similar to VDRL in post-treatment monitoring.

  11. Anti-inflammatory activity of Momordica charantia in edema paw and in cortisol seric modulation

    International Nuclear Information System (INIS)

    Magnata, Simey S.L.P.; Correia, Marilia B.L.; Brandao, Jose Odinilson C.; Souza, Grace M.L.; Catanho, Maria Teresa J.A.; Terra, Daniele A.; Amorim, Lucia F.

    2005-01-01

    The first sources that the humanity disposed to disease's treatment was plants and herbs. The Momordica charantia, Melao de Sao Caetano (bitter melon), occur in South and Central America and in East, it has been used as an anti-diabetic agent, anti-tumor, anti-helmintic and anti-ulcerogenic. The objective of this study is to research the Momordica charantia's activity on inflammatory process and the change on cortisol hormone seric concentration. To evaluate the anti-inflammatory activity were used mice (n=5) in test groups (30,60,100,250 mg/kg of extract) and control (negative and positive) groups (AAS 250 mg/kg and NaCl 0,9%); the inflammatory agent (carrageenan 1% p/v, 0,1 mL) was injected into right hind paw planter surface, 30 min after, the groups received each dose IP of extract, AAS and solution saline respectively; 4 hour after the mice was sacrificed and the difference between right and left hind foot mass was measured. There was a significant reduction (p<0,05)in carrageenan-induced edema paw at test from control group, the best result was obtained at 60 mg/kg dose which inhibits edema formation by 50%. To determinate the cortisol concentrations male Wistar rats, were divided in three groups: control, test A (2 hours of treatment) and test B (4 hours of treatment). The control group received 0,25 mL of saline solution (NaCl) 0,9% and the test groups 0,25 mL of Momordica charantia's aqueous extract, obtained by decoction of green leaves, (31,16 mg/kg animal); all by via IP. After the treatment, the animals were sacrificed and the serum obtained for realization of dosages. The cortisol was determined through radioimmunoassay. The results showed a reduction on a average by 83,9% from control group. The Momordica charantia's extract showed a high anti-inflammatory effect and was capable of reducing the seric cortisol on normal rats. (author)

  12. Determination iodine in biological materials using instrumental neutron activation and anti-coincidence gamma-ray spectrometry

    International Nuclear Information System (INIS)

    Zhang, W.H.; Chatt, A.

    1997-01-01

    Iodine is an element of interest in nutritional research. Its lower limit of safe and adequate daily dietary intake for adults varies between 150 and 200 micrograms per day. In the present study, an epithermal instrumental neutron activation analysis (EINAA) method in conjunction with anti-coincidence counting has been developed for the determination of ppb levels of iodine in individual food items. Typically 200-300 mg of a sample are irradiated for 10 or 20 minutes at the Dalhousie University SLOWPOKE-2 reactor in an epithermal flux of 1x10 11 n cm -2 s -1 , followed by 1 min decay and then counting for 30 min. The 443-keV gamma-ray of 128 I is used for measuring iodine content by anti-coincidence counting. The anti-coincidence spectrometer consists of a 25% HPGe detector surrounded by a 10''x10'' NaI(TI) annulus and a 3''x3'' NaI(TI) plug. This system has a peak-to-Compton ratio of about 650 to 1 for the 661.6-keV photopeak of 137 Cs. The Compton background resulting from the scattering of many gamma-rays of energies higher than 443 keV can be reduced by a factor of about 4 using anti-coincidence counting compared to conventional counting. The detection limit for iodine can be improved by a factor of 2 to 5 depending on the sample matrix, dead time, position of the annulus and counting geometry among several other factors.The lowest detection limit of 5 ppb can be achieved for low-salt foods. This limit is comparable to that obtained by a preconcentration NAA (PNAA) method. However, a detection limit of 20 ppb is more realistic for samples containing high amounts of Na, Cl and Al. The results obtained for many reference materials are in good agreement with the certified values and those reported by the PNAA method. Details of the methods and results will be reported

  13. Determination iodine in biological materials using instrumental neutron activation and anti-coincidence gamma-ray spectrometry

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, W.H.; Chatt, A. [Dalhousie University, Halifax, Nova Scotia (Canada). Radiochemistry Research Laboratory

    1997-10-01

    Iodine is an element of interest in nutritional research. Its lower limit of safe and adequate daily dietary intake for adults varies between 150 and 200 micrograms per day. In the present study, an epithermal instrumental neutron activation analysis (EINAA) method in conjunction with anti-coincidence counting has been developed for the determination of ppb levels of iodine in individual food items. Typically 200-300 mg of a sample are irradiated for 10 or 20 minutes at the Dalhousie University SLOWPOKE-2 reactor in an epithermal flux of 1x10{sup 11} n cm{sup -2} s{sup -1}, followed by 1 min decay and then counting for 30 min. The 443-keV gamma-ray of {sup 128}I is used for measuring iodine content by anti-coincidence counting. The anti-coincidence spectrometer consists of a 25% HPGe detector surrounded by a 10``x10`` NaI(TI) annulus and a 3``x3`` NaI(TI) plug. This system has a peak-to-Compton ratio of about 650 to 1 for the 661.6-keV photopeak of {sup 137}Cs. The Compton background resulting from the scattering of many gamma-rays of energies higher than 443 keV can be reduced by a factor of about 4 using anti-coincidence counting compared to conventional counting. The detection limit for iodine can be improved by a factor of 2 to 5 depending on the sample matrix, dead time, position of the annulus and counting geometry among several other factors.The lowest detection limit of 5 ppb can be achieved for low-salt foods. This limit is comparable to that obtained by a preconcentration NAA (PNAA) method. However, a detection limit of 20 ppb is more realistic for samples containing high amounts of Na, Cl and Al. The results obtained for many reference materials are in good agreement with the certified values and those reported by the PNAA method. Details of the methods and results will be reported 6 refs., 2 tabs.

  14. Ação anti-úlcera e cicatrizante de algumas plantas brasileiras

    Directory of Open Access Journals (Sweden)

    Elfriede Marianne Bacchi

    Full Text Available Apresentamos uma revisão de algumas plantas brasileiras, existentes na região de São Paulo, conhecida por sua ação anti-úlcera e cicatrizante. As espécies citadas neste trabalho são: sucupira, jucá,erva de bugre, taiuiá, cipó-chumbo,coipó-caboclo, carobinha, saião, cordão de frade, aroeira e estoraque do campo.

  15. Parametri za procena na kvalitetot na polietilenska i na polipropilenska ambalaza i na gumeni zatvoraci nameneti za farmacevtski preparati

    Directory of Open Access Journals (Sweden)

    Liljana Ugrinova

    2002-03-01

    Full Text Available Napraven e pregled na parametrite za procena na kvalitetot na polietilenska i na polipropilenska ambalaza i na gumeni zatvoraci nameneti za farmacevtski preparati. Za procena na kvalitetot na ispituvaniot materijal bea izvrseni fizicki, hemiski i bioloski ispituvanja spored postapkite dadeni vo Ph. Eur., DIN i spored DIN ISO standardite. Baranjata za kvalitet na ovoj vid ambalaza propisani spored Ph. Eur., DIN i DIN ISO standardite se razlikuvaat vo odnos na predvidenite parametri za fizicki, za hemiski i za bioloski ispituvanja. Isto taka, propisani se i razlicni granici na dozvoleno otstapuvanje na oddelni parametri.

  16. Therapy of hyperthyroidism with Na131I

    International Nuclear Information System (INIS)

    Kakehi, Hirotake; Furukawa, Takashi; Fukakusa, Shunichi; Futonaka, Hiroshi; Takahashi, Yuji

    1984-01-01

    Forty one patients of hyperthyroidism were treated with Na 131 I. Men and women are in the ratio 1:3.1. The ages of patients are between twenties and sixties and the forties are the highest in number. The observation period of clinical courses is between 1 and 8 years. The number of patients observed over 5 years are 51% of them and over 2 years are 83%. The treatment frequency is as follows: On 37 cases each one was treated once with Na 131 I. 2 cases twice, 1 case at 4 times in 3 years and 1 case at 5 times in 6 years. The treatment doses are between 4,000-6,000 rad (40-60 Gray). In the cases treated with the irradiation dose of 6,000 rad, we often saw hypothyroidism. In cases aiming 4,000-5,000 rad, there is a tendency of leaving hyperthyroidism unrecovered. In conclusion, the patients should be treated giving 4,000-5,000 rad or with Na 131 I doses of 3-6mCi. If the effects of the treatment are insufficient, the patients should be further treated with anti-thyroid drug or treated again with Na 131 I. As the result, there are at present 25 cases (61.0%) in normal status of the thyroid gland, 12 cases (29.2%) in hyperthyroidism and 4 cases (9.8%) in hypothyroidism totaling 41 cases in all. (author)

  17. Anti-G with concomitant anti-C and anti-D: A case report in a pregnant woman.

    Science.gov (United States)

    Yousuf, Rabeya; Mustafa, Ahmad Nasirudin; Ho, Siew-Ling; Tang, Yee-Loong; Leong, Chooi-Fun

    2017-01-01

    The G antigen of Rh blood group system is present in almost all D-positive or C-positive red cells but absent from red cells lacking D and C antigens. The differentiation of anti-D and anti-C from anti-G is not necessary for routine transfusion; however, during pregnancy, it is important because anti-G can masquerade as anti-D and anti-C with initial antibody testing. The false presence of anti-D will exclude the patient from receiving anti-D immunoglobulin (RhIG) when the patient actually is a candidate for RhIG prophylaxis. Moreover, patients with positive anti-D or anti-G are at risk of developing hemolytic disease of the fetus and newborn and need close monitoring. Thus, proper identification allows the clinicians to manage patients properly. This case report highlights a rare case of anti-G together with anti-D and anti-C in a pregnant woman. This report disseminates knowledge on identification of anti-G and its importance in pregnant women.

  18. Autoanticorpos em esclerodermia e sua associação ao perfil clínico da doença: estudo em 66 pacientes do sul do Brasil Autoantibodies in scleroderma and their association with the clinical profile of the disease: a study of 66 patients from southern Brazil

    Directory of Open Access Journals (Sweden)

    Thelma Larocca Skare

    2011-12-01

    Full Text Available FUNDAMENTOS: A esclerodermia é uma colagenose relativamente rara, cujo perfil de autoanticorpos está associado a diferentes manifestações clínicas. A prevalência de autoanticorpos na esclerodermia sofre influência racial e genética. OBJETIVO: Estudar a prevalência dos anticorpos anti-Scl-70, anticentrômero e anti-U1-RNP em pacientes com esclerodermia do sul do Brasil e verificar suas associações às manifestações clínicas. MÉTODOS: Estudo retrospectivo de análise de 66 pacientes com esclerodermia para presença de anti-Scl-70, anticentrômero (ACA e anti-U1-RNP e de manifestações clínicas como: Raynaud, cicatrizes estelares, necrose digital, telangiectasias, calcinose, fibrose pulmonar, pleurites, pericardites, miocardiopatias, artralgias e artrites, grau de esclerose da pele, contraturas articulares e atritos de tendão, hipertensão pulmonar, manifestações esofágicas e crise renal. RESULTADOS: A prevalência do anti-Scl-70 foi de 17,8%, a do ACA, de 33,3%, e a do U1 RNP foi de 11,8 %. O anti-Scl-70 estava associado à forma difusa da doença (p=0,015, presença de miocardiopatias (p=0,016 e de cicatrizes estelares (p=0,05; o anticentrômero foi mais comum na forma limitada, embora sem significância estatística e mostrou-se protetor para as miocardiopatias (p=0,005. O anti-U1-RNP foi mais comum nas formas de superposição (p=0,0004. CONCLUSÃO: A prevalência e o perfil de associações clínicas dos autoanticorpos em esclerodermia de pacientes brasileiros assemelham-se aos da literatura mundial.BACKGROUND: Scleroderma is a fairly rare connective tissue disease whose autoantibody profile is associated with different clinical manifestations. The prevalence of autoantibodies in scleroderma is influenced by race and genetics. OBJECTIVE: To study the prevalence of anti-Scl-70, anti-centromere (ACA and anti-U1-RNP antibodies in patients with scleroderma in southern Brazil and verify their association with clinical

  19. Anti-Cyclic Citrullinated Peptide (Anti-CCP and Anti-Mutated Citrullinated Vimentin (Anti-MCV Relation with Extra-Articular Manifestations in Rheumatoid Arthritis

    Directory of Open Access Journals (Sweden)

    Laura Gonzalez-Lopez

    2014-01-01

    Full Text Available We evaluated the association between anti-cyclic citrullinated peptide antibodies (anti-CCP and anti-mutated citrullinated vimentin antibodies (anti-MCV with the presence of extra-articular (ExRA manifestations in 225 patients with rheumatoid arthritis (RA. Ninety-five patients had ExRA and 130 had no ExRA. There was no association of anti-CCP and anti-MCV levels with the presence of ExRA as total group (P=0.40 and P=0.91, resp.. Making an analysis of individual manifestations, rheumatoid nodules were associated with positivity for rheumatoid factor (RF; (P=0.01, anti-CCP (P=0.048, and anti-MCV (P=0.02. Instead, RF, anti-CCP, or anti-MCV were not associated with SS, chronic anemia, or peripheral neuropathy. Levels of anti-CCP correlated with the score of the Health Assessment Questionnaire-Disability Index (HAQ-Di (r=0.154, P=0.03, erythrocyte sedimentation rate (ESR; (r=0.155, P=0.03, and RF (P=0.254, P<0.001, whereas anti-MCV titres only correlated with RF (r=0.169, P=0.02. On adjusted analysis, ExRA was associated with longer age (P=0.015, longer disease duration (P=0.007, higher DAS-28 score (P=0.002, and higher HAQ-DI score (P=0.007, but serum levels of anti-CCP and anti-MCV were not associated. These findings show the need to strengthen the evaluation of the pathogenic mechanisms implied in each specific ExRA manifestation.

  20. Advances in neglected tropical disease vaccines: Developing relative potency and functional assays for the Na-GST-1/Alhydrogel hookworm vaccine.

    Directory of Open Access Journals (Sweden)

    Jill B Brelsford

    2017-02-01

    Full Text Available A new generation of vaccines for the neglected tropical diseases (NTDs have now advanced into clinical development, with the Na-GST-1/Alhydrogel Hookworm Vaccine already being tested in Phase 1 studies in healthy adults. The current manuscript focuses on the often overlooked critical aspects of NTD vaccine product development, more specifically, vaccine stability testing programs. A key measure of vaccine stability testing is "relative potency" or the immunogenicity of the vaccine during storage. As with most NTD vaccines, the Na-GST-1/Alhydrogel Hookworm Vaccine was not developed by attenuation or inactivation of the pathogen (Necator americanus, so conventional methods for measuring relative potency are not relevant for this investigational product. Herein, we describe a novel relative potency testing program and report for the first time on the clinical lot of this NTD vaccine during its first 60 months of storage at 2-8°C. We also describe the development of a complementary functional assay that measures the ability of IgG from animals or humans immunized with Na-GST-1/Alhydrogel to neutralize this important hookworm enzyme. While 90% inhibition of the catalytic activity of Na-GST-1 was achieved in animals immunized with Na-GST-1/Alhydrogel, lower levels of inhibition were observed in immunized humans. Moreover, anti-Na-GST-1 antibodies from volunteers in non-hookworm endemic areas were better able to inhibit catalytic activity than anti-Na-GST-1 antibodies from volunteers resident in hookworm endemic areas. The results described herein provide the critical tools for the product development of NTD vaccines.

  1. Advances in neglected tropical disease vaccines: Developing relative potency and functional assays for the Na-GST-1/Alhydrogel hookworm vaccine

    Science.gov (United States)

    Brelsford, Jill B.; Plieskatt, Jordan L.; Yakovleva, Anna; Jariwala, Amar; Keegan, Brian P.; Peng, Jin; Xia, Pengjun; Li, Guangzhao; Campbell, Doreen; Periago, Maria Victoria; Correa-Oliveira, Rodrigo; Bottazzi, Maria Elena; Hotez, Peter J.

    2017-01-01

    A new generation of vaccines for the neglected tropical diseases (NTDs) have now advanced into clinical development, with the Na-GST-1/Alhydrogel Hookworm Vaccine already being tested in Phase 1 studies in healthy adults. The current manuscript focuses on the often overlooked critical aspects of NTD vaccine product development, more specifically, vaccine stability testing programs. A key measure of vaccine stability testing is "relative potency" or the immunogenicity of the vaccine during storage. As with most NTD vaccines, the Na-GST-1/Alhydrogel Hookworm Vaccine was not developed by attenuation or inactivation of the pathogen (Necator americanus), so conventional methods for measuring relative potency are not relevant for this investigational product. Herein, we describe a novel relative potency testing program and report for the first time on the clinical lot of this NTD vaccine during its first 60 months of storage at 2–8°C. We also describe the development of a complementary functional assay that measures the ability of IgG from animals or humans immunized with Na-GST-1/Alhydrogel to neutralize this important hookworm enzyme. While 90% inhibition of the catalytic activity of Na-GST-1 was achieved in animals immunized with Na-GST-1/Alhydrogel, lower levels of inhibition were observed in immunized humans. Moreover, anti-Na-GST-1 antibodies from volunteers in non-hookworm endemic areas were better able to inhibit catalytic activity than anti-Na-GST-1 antibodies from volunteers resident in hookworm endemic areas. The results described herein provide the critical tools for the product development of NTD vaccines. PMID:28192438

  2. Anti-G with concomitant anti-C and anti-D: A case report in a pregnant woman

    Directory of Open Access Journals (Sweden)

    Rabeya Yousuf

    2017-01-01

    Full Text Available The G antigen of Rh blood group system is present in almost all D-positive or C-positive red cells but absent from red cells lacking D and C antigens. The differentiation of anti-D and anti-C from anti-G is not necessary for routine transfusion; however, during pregnancy, it is important because anti-G can masquerade as anti-D and anti-C with initial antibody testing. The false presence of anti-D will exclude the patient from receiving anti-D immunoglobulin (RhIG when the patient actually is a candidate for RhIG prophylaxis. Moreover, patients with positive anti-D or anti-G are at risk of developing hemolytic disease of the fetus and newborn and need close monitoring. Thus, proper identification allows the clinicians to manage patients properly. This case report highlights a rare case of anti-G together with anti-D and anti-C in a pregnant woman. This report disseminates knowledge on identification of anti-G and its importance in pregnant women.

  3. Bio-physicochemical characterization and applied studies of carotovoricin na5 (crna5) on blb affected rice plants

    International Nuclear Information System (INIS)

    Jabeen, N.; Rasool, S.A.; Naz, S.A.

    2014-01-01

    Erwinia carotovora is a common soil borne plant pathogen, which generally infects plants of family Solanacea. In the present study, bacteriocin (CrNA5), produced by an indigenously isolated E. carotovora NA5 has been characterized and its possible anti phytopathogenic potential was shown in the field studies. CrNA5 showed its antimicrobial activity against many gram-positive and gram-negative bacteria including those associated with the plant diseases. The bacteriocin showed substantial stability against wide range of temperatures and pH. Additionally, it was also found resistant to the treatment of metal ions, organic solvents and non-proteolytic enzymes. Conversely, its inactivation by proteinase K and protease suggested its protein nature. Mode of action studies revealed that CrNA5 is bactericidal, particularly against Xanthomonas oryzae oryzae. The electron micrograph of CrNA5 revealed spherical particle (empty head) like structures implicating the vestigial bacteriophage based origin of carotovoricin. In silico analyses were also conducted in order to deduce the plausible ratio of the amino acids present in the protein. The In vivo experiments showed the efficacy of CrNA5 against X. oryzae oryzae (Xoo), the causative agent of bacterial leaf blight (BLB) of rice, both in controlled conditions (green house) as well as in field trials. To the best of our knowledge, the present study is the first of its kind with the bacteriocin of Erwinia origin (tested against the BLB infected plants in the field). It is expected that the present study will help visit new insights of the bacteriocins produced by Erwinia carotovora and their potential (application) as anti phytopathogenic agent. (author)

  4. Linkage study of voltage-gated potassium channels in familial mesial temporal lobe epilepsy Análise de ligação dos canais de potássio voltagem-dependente na epilepsia de lobo temporal mesial familiar

    Directory of Open Access Journals (Sweden)

    Cláudia Vianna Maurer-Morelli

    2007-03-01

    Full Text Available Voltage-gated potassium channels (VGKCs play a critical role in the regulation of neuronal excitability and have been implicated in some types of epilepsies. Recently, autoimmune limbic encephalitis (LE was associated with antibodies against VGKC. In addition, patients with LE showed partial epilepsy and increased T2 signal abnormalities in limbic structures. We have reported familial mesial temporal lobe epilepsy (FMTLE associated with hippocampal atrophy (HA and other signs of mesial temporal sclerosis detected by magnetic resonance imaging (MRI. In order to investigate whether VGKC may be associated to HA present in FMTLE, we perform linkage study in these candidate genes. Seventy-three microsatellites markers were genotyped in different human autosomal chromosome. Two-point LOD scores did not show evidence for linkage with any of the microsatellite markers genotyped (Zmax ranging from 0.11to-9.53 at theta=0.00. In the present study, linkage data showed no evidence that VGKC are involved in the determination of HA in FMTLE.Canais de potássio voltagem-dependentes (CPVD desempenham importante papel na excitabilidade neuronal e estão associados a determinados tipos de epilepsia. Recentemente, um tipo de encefalite límbica autoimune (EL foi associado com anticorpos contra CPVD. Além disso, há relatos de pacientes com EL e epilepsia parcial, além de hipersinal em regiões límbicas detectadas em imagens de ressonância magnética (IRM. Nós temos descrito a epilepsia de lobo temporal mesial familial (ELTMF associada à atrofia hipocampal (AH e outros sinais de esclerose mesial temporal observadas em IRM. Para investigar se os CPVD podem estar associados com a AH identificada na ELTMF, empregamos o estudo de ligação genética nesses genes candidatos. Setenta e três marcadores microssatélites foram genotipados e o LOD score de dois pontos mostrou Zmax variando de 0.11 a -9.53 para teta=0.00. No presente estudo, os dados obtidos com a an

  5. Model independent calculation of B(anti B0→D(*)+τ- anti ν)/B(anti B0→D(*)+e- anti ν)

    International Nuclear Information System (INIS)

    Hwang, D.S.

    2000-01-01

    Using the formulas for the dΓ/dq 2 distribution with non-zero lepton mass and experimentally determined form factors, we calculate the dΓ(D (*)+ l - anti ν)/dq 2 spectra and branching fractions for l=e,μ and τ. We obtain the results B(anti B 0 →D + τ - anti ν)/B(anti B 0 →D + e - anti ν)=0.278 +0.049 -0.035 and B(anti B 0 →D *+ τ - anti ν)/B(anti B 0 →D *+ e - anti ν)=0.256 +0.014 -0.013 . Since we used the experimentally measured form factors, these results are independent of theoretical models of the form factors. (orig.)

  6. Hyperimmune anti-HBs plasma as alternative to commercial immunoglobulins for prevention of HBV recurrence after liver transplantation

    Directory of Open Access Journals (Sweden)

    Majno Pietro

    2010-07-01

    Full Text Available Abstract Background Hepatitis B immune globulins (HBIG in combination with nucleos(tide analogues (NA are effectively used for the prevention of hepatitis B virus (HBV recurrence after liver transplantation (LT. However, associated treatment costs for HBIG are exceedingly high. Methods Fresh frozen plasma obtained from blood donors with high anti-HBs levels (hyperimmune plasma, HIP containing at least 4,500 IU anti-HBs was used as alternative treatment for HBV recurrence prophylaxis post-LT. Results Twenty-one HBV-related LT recipients received HIP starting at transplantation, followed by long-term combination treatment with NA. Mean follow-up time was 4.5 years (range 0.5-12.6 and each patient received on average 8.2 HIP per year (range 5.8-11.4. Anti-HBs terminal elimination kinetic after HIP administration was 20.6 days (range 13.8-30.9, which is comparable to values reported for commercial HBIG products. All 21 patients remained free of HBV recurrence during follow-up and no transfusion-transmitted infection or other serious complication was observed. Seven patients developed reversible mild transfusion reactions. The cost for one HIP unit was US$140; average yearly HBIG treatment cost was US$1,148 per patient, as compared to US$25,000-100,000 for treatment with commercial HBIG. Conclusion The results of this study suggest that the use of HIP may be a useful and economical approach for the prevention of HBV recurrence post-LT if used in combination with NA. Additional prospective controlled studies in larger populations are needed to confirm these results.

  7. What is it really? Anti-G or Anti-D plus Anti-C: Clinical Significance in Antenatal Mothers.

    Science.gov (United States)

    Das, Soumya; Shastry, Shamee; Murugesan, M; B, Poornima Baliga; Shastry, Shamee

    2017-06-01

    G antigen of Rh blood group system is present either along with D and/or C positive red cells. Hence, [serologically anti-G presents with the similar picture as that of multiple antibodies (anti-D + anti-C). Differentiating them is important as anti-D + anti-C causes severe hemolytic disease of the fetus and newborn than anti-G. In pregnancies with anti-G alone, alloimmunization due to D antigen could be prevented by prophylactic administration of RhIg. Differentiating between anti-D + C from anti-G in alloimmunized pregnant mothers becomes essential. Sera from antenatal mothers, whose antibody identification by 11-cell panel gave a pattern for anti-D and anti-C were selected. Extended phenotyping for Rh system was performed for these antenatal cases. Differential adsorption and elution testing using R 2 R 2 cells initially and r'r cells subsequently were performed to distinguish anit-G from anti-D + anti-C. Antibody titers of these antibodies were determined and their clinical outcome in the newborn was followed. A pattern suggestive of anti D and anti C on antibody identification were observed in six antenatal cases. On further workup 50 % of them confirmed to have anti G. Antibody titers of anti-G and anti-C were lower than that of Anti-D. All newborns were sensitized in vivo and the antibody specificity in them were confirmed with elution studies. The mothers who had only anti-G were subsequently administered with an appropriate dose of RhIg.Differential adsorption and elution studies help in identifying anti-G and distinguishing it from anti-D plus anti-C, thus helping in better patient management.

  8. Tuberous sclerosis: evaluation of myofibroblasts in cutaneous angiofibromas - case report

    OpenAIRE

    Perez, Erick Gomes; Paranaíba, Lívia Ribeiro; Bonan, Paulo Rogério; Orsi Júnior, Julian Miranda; Oliveira, Adriano Macedo de; Martelli Júnior, Hercílio

    2010-01-01

    Esclerose tuberosa é uma condição rara e autossômica dominante. Miofibroblastos são células que exibem fenótipo híbrido entre fibroblastos e células musculares lisas. O objetivo deste caso clínico é mostrar as características clínicas e histopatológicas da esclerose tuberosa e avaliar miofibroblastos nos angiofibromas cutâneos dessa condição. Lesões removidas foram coradas em HE e tricrômico de Masson. Para determinar a presença de miofibroblastos foi usada imunoistoquímica para α-SMA. E...

  9. HIV-1 anti-retroviral drug effect on the C. albicans hyphal growth rate by a Bio-Cell Tracer system Efeito da droga anti-retroviral HIV-1 no crescimento de hifas de C. albicans monitoradas pelo sistema "Bio-Cell Tracer"

    Directory of Open Access Journals (Sweden)

    Nadja Rodrigues de Melo

    2006-09-01

    Full Text Available Declining incidence of oropharyngeal candidosis and opportunistic infections over recent years can be attributed to the use of highly active anti-retroviral therapy (HAART. Infection with C. albicans generally involves adherence and colonization of superficial tissues. During this process, budding yeasts are able to transform to hyphae and penetrate into the deep tissue. Using the biocell tracer system, C. albicans hyphal growth was dynamically observed at the cellular level. Ritonavir was effective in the inhibition of hyphal growth with growth rate of 0.8 mum/min. This study showed the in vitro effect of HIV anti-retroviral drug on the growth rate of the C. albicans hyphae.O declínio na incidência de candidose orofaríngea e infecções oportunistas associadas a infecção pelo HIV tem sido atribuído a introdução da terapia antiretroviral combinada (HAART. Infecção por C. albicans envolve aderência e colonização da mucosa superficial. Durante este processo leveduras são capazes de transformar-se na forma de hifas e penetrar nos tecidos mais profundos. Usando o sistema "Bio-Cell Tracer", o crescimento de hifas de C. albicans foi observado dinamicamente a nível celular. Ritonavir, inibidor de protease do HIV, foi efetivo na inibição do crescimento de hifas com media de 0.8 mim/min.O presente estudo demonstrou o efeito in vitro de um agente anti-retroviral HIV sobre o crescimento de hifas de C. albicans.

  10. Arctigenin, a potential anti-arrhythmic agent, inhibits aconitine-induced arrhythmia by regulating multi-ion channels.

    Science.gov (United States)

    Zhao, Zhenying; Yin, Yongqiang; Wu, Hong; Jiang, Min; Lou, Jianshi; Bai, Gang; Luo, Guo'an

    2013-01-01

    Arctigenin possesses biological activities, but its underlying mechanisms at the cellular and ion channel levels are not completely understood. Therefore, the present study was designed to identify the anti-arrhythmia effect of arctigenin in vivo, as well as its cellular targets and mechanisms. A rat arrhythmia model was established via continuous aconitine infusion, and the onset times of ventricular premature contraction, ventricular tachycardia and death were recorded. The Action Potential Duration (APD), sodium current (I(Na)), L-type calcium current (I(Ca, L)) and transient outward potassium current (I(to)) were measured and analysed using a patch-clamp recording technique in normal rat cardiomyocytes and myocytes of arrhythmia aconitine-induced by. Arctigenin significantly delayed the arrhythmia onset in the aconitine-induced rat model. The 50% and 90% repolarisations (APD50 and APD90) were shortened by 100 µM arctigenin; the arctigenin dose also inhibited the prolongation of APD50 and APD90 caused by 1 µM aconitine. Arctigenin inhibited I(Na) and I(Ca,L) and attenuated the aconitine-increased I(Na) and I(Ca,L) by accelerating the activation process and delaying the inactivation process. Arctigenin enhanced Ito by facilitating the activation process and delaying the inactivation process, and recoverd the decreased Ito induced by aconitine. Arctigenin has displayed anti-arrhythmia effects, both in vivo and in vitro. In the context of electrophysiology, I(Na), I(Ca, L), and I(to) may be multiple targets of arctigenin, leading to its antiarrhythmic effect. © 2013 S. Karger AG, Basel.

  11. Combinatorial study of NaF addition in CIGSe films for high efficiency solar cells

    KAUST Repository

    Eid, Jessica; Liang, Haifan; Gereige, Issam; Lee, Sang; Van Duren, Jeroen K J

    2013-01-01

    We report on a sodium fluoride (NaF) thickness variation study for the H2Se batch furnace selenization of sputtered Cu(In,Ga) films in a wide range of Cu(In,Ga) film compositions to form Cu(In,Ga)Se2 (CIGSe) films and solar cells. Literature review indicates lack of consensus on the mechanisms involved in Na altering CIGSe film properties. In this work, for sputtered and batch-selenized CIGSe, NaF addition results in reduced gallium content and an increase in grain size for the top portion of the CIGSe film, as observed by scanning electron microscopy and secondary ion mass spectrometry. The addition of up to 20nm of NaF resulted in an improvement in all relevant device parameters: open-circuit voltage, short-circuit current, and fill factor. The best results were found for 15nm NaF addition, resulting in solar cells with 16.0% active-area efficiency (without anti-reflective coating) at open-circuit voltage (VOC) of 674mV. © 2013 John Wiley & Sons, Ltd.

  12. Combinatorial study of NaF addition in CIGSe films for high efficiency solar cells

    KAUST Repository

    Eid, Jessica

    2013-12-04

    We report on a sodium fluoride (NaF) thickness variation study for the H2Se batch furnace selenization of sputtered Cu(In,Ga) films in a wide range of Cu(In,Ga) film compositions to form Cu(In,Ga)Se2 (CIGSe) films and solar cells. Literature review indicates lack of consensus on the mechanisms involved in Na altering CIGSe film properties. In this work, for sputtered and batch-selenized CIGSe, NaF addition results in reduced gallium content and an increase in grain size for the top portion of the CIGSe film, as observed by scanning electron microscopy and secondary ion mass spectrometry. The addition of up to 20nm of NaF resulted in an improvement in all relevant device parameters: open-circuit voltage, short-circuit current, and fill factor. The best results were found for 15nm NaF addition, resulting in solar cells with 16.0% active-area efficiency (without anti-reflective coating) at open-circuit voltage (VOC) of 674mV. © 2013 John Wiley & Sons, Ltd.

  13. Biotechnical paving of recombinant enterocin A as the candidate of anti-Listeria agent.

    Science.gov (United States)

    Hu, Xiaoyuan; Mao, Ruoyu; Zhang, Yong; Teng, Da; Wang, Xiumin; Xi, Di; Huang, Jianzhong; Wang, Jianhua

    2014-08-28

    Enterocin A is a classic IIa bacteriocin isolated firstly from Enterococcus faecium CTC492 with selective antimicrobial activity against Listeria strains. However, the application of enterocin A as an anti-Listeria agent has been limited due to its very low native yield. The present work describes high production of enterocin A through codon optimization strategy and its character study. The gene sequence of enterocin A was optimized based on preferential codon usage in Pichia pastoris to increase its expression efficiency. The highest anti-Listeria activity reached 51,200 AU/ml from 180 mg/l of total protein after 24 h of induction in a 5-L fermenter. Recombinant enterocin A (rEntA), purified by gel filtration chromatography, showed very strong activity against Listeria ivanovii ATCC 19119 with a low MIC of 20 ng/ml. In addition, the rEntA killed over 99% of tested L. ivanovii ATCC19119 within 4 h when exposed to 4 × MIC (80 ng/ml). Moreover, it showed high stability under a wide pH range (2-10) and maintained full activity after 1 h of treatment at 80°C within a pH range of 2-8. Its antimicrobial activity was enhanced at 25 and 50 mM NaCl, while 100-400 mM NaCl had little effect on the bactericidal ability of rEntA. The EntA was successfully expressed in P. pastoris, and this feasible system could pave the pre-industrial technological path of rEntA as a competent candidate as an anti-Listeria agent. Furthermore, it showed high stability under wide ranges of conditions, which could be potential as the new candidate of anti-Listeria agent.

  14. Clinical and immunological relevance of anti-neuronal antibodies in celiac disease with neurological manifestations

    Science.gov (United States)

    Caio, Giacomo; Giorgio, Roberto De; Venturi, Alessandro; Giancola, Fiorella; Latorre, Rocco; Boschetti, Elisa; Serra, Mauro; Ruggeri, Eugenio; Volta, Umberto

    2015-01-01

    Aim: To assess anti-neuronal antibodies (NA) prevalence and their correlation with neurological disorders and bowel habits in celiac disease (CD) patients. Background: Neurological manifestations are estimated to occur in about 10% of celiac disease patients and NA to central nervous system (CNS) and enteric nervous system (ENS) are found in a significant proportion of them. Little is known about the clinical and immunological features in CD patients with neurological manifestations. Patients and methods: NA to CNS and ENS were investigated in 106 CD patients and in 60 controls with autoimmune disorders by indirect immunofluorescence on rat / primate cerebellar cortex and intestinal (small and large bowel) sections. Results: IgG NA to CNS (titer 1:50 - 1:400) were positive in 23 celiacs (21%), being more frequently detected in those with neurological disorders that in those without neurological dysfunction (49% vs. 8%, P 1:200 had severe constipation. Only one patient with cerebellar ataxia and intestinal sub-occlusion was positive for NA to CNS and ENS. NA to CNS and ENS were found in 7% and 5% of controls, respectively. Conclusion: In CD the positivity of NA to CNS can be regarded as a marker of neurological manifestations. High titer NA to ENS are associated with severe constipation. The demonstration of NA to CNS and ENS suggests an immune-mediated pathogenesis leading to central neural impairment as well as gut dysfunction (hence constipation), respectively. PMID:25926940

  15. [Exploration on mechanism of anti-influenza virus activity of genus Paeonia based on network pharmacology].

    Science.gov (United States)

    Cai, Ya-Qi; Bao, Ya-Ting; Wang, Hong-Jin; Ren, Xiao-Dong; Huang, Lin-Fang; He, Jie; Liu, Tian-Tian; Zeng, Rui

    2018-04-01

    This paper aimed to investigate the anti-influenza virus activity of the genus Paeonia, screen potential anti-influenza virus compounds and predict targets of anti-influenza virus to explore the mechanism of anti-influenza virus activity. First of all, a total of 301 compounds of the genus Paeonia were summarized from the literatures in recent ten years. The candidate active ingredients from the genus Paeonia were identified by database such as PubChem and Chemical Book. The ligands were constructed by ChemDraw, Avogadro and Discovery Studio Visualizer. Secondly, 23 potential anti-influenza virus targets were developed by combining the target database and the literatures. Uniprot database was used to find the anti-influenza virus targets, and RCSB was used to identify targets associated with anti-influenza virus activity as docked receptor proteins. QuickVina 2.0 software was used for molecular docking. Finally, the Cytoscape 3.5.1 software was used to map the potential activity compounds of the genus Paeonia against influenza virus and the anti-influenza virus target network. Uniprot online database was used to analyze the target GO enrichment and KEGG metabolic pathways. The results showed that 74 compounds of the genus Paeonia had anti-influenza virus effect and 18 potential anti-influenza virus targets were screened. GO analysis concluded that the mechanism of the genus Paeonia anti-influenza virus is consistent with the mechanism of NA anti-influenza virus in order to stop the sprouting, dispersion and diffusion of virus and reduce the ability of virus to infect, so that the infection can be restricted so as to achieve the anti-influenza virus effect. Copyright© by the Chinese Pharmaceutical Association.

  16. ESTUDO BIOQUÍMICO DO POTENCIAL DA MEMBRANA AMNIÓTICA NA FIBROSE HEPÁTICA INDUZIDA EM RATOS

    Directory of Open Access Journals (Sweden)

    Shaine Silva Maciel

    2016-11-01

    Full Text Available A fibrose hepática causada por obstrução do ducto biliar induz alterações tanto na estrutura como na função do fígado, e pode levar a cirrose e insuficiência hepática, quando não tradada. A membrana amniótica humana (MA devido às suas propriedades anti-inflamatórias e anti-fibróticas pode ser uma terapia alternativa. A proposta desse trabalho é analisar as alterações nos níveis séricos das principais enzimas celulares e da albumina, na fibrose hepática induzida pela ligadura do ducto biliar (LDB e após o tratamento com a MA. Dez ratos foram divididos nos grupos LDB e LDB+MA, e eutanasiados após 9 semanas da LDB. As amostras de sangue foram processadas bioquimicamente para análise da albumina (ALB, fosfatase alcalina (FA e transaminases (TGP e TGO.  Comparando os grupos experimentais verificou-se que no grupo LDB+MA houve a diminuição da ALB e TGP e no grupo LDB houve a diminuição da FA e TGO, entretanto sem apresentar diferença significante entre os grupos. Conclui-se que a MA, quando aplicada ao fígado no mesmo momento da indução da fibrose, parece não ter exercido efeito significativo na função hepática.

  17. Meningoencefalites toxoplásmica e chagásica em pacientes com infecção pelo vírus da imunodeficiência humana: diagnóstico diferencial anatomopatológico e tomográfico Meningoencephalitis due to Toxoplasma gondii and Trypanosoma cruzi in patients with HIV infection. Diferencial diagnosis of pathologic and tomographic findings

    Directory of Open Access Journals (Sweden)

    Javier E. Lazo

    1998-04-01

    Full Text Available Em 22 pacientes com sorologia positiva para o vírus da imunodeficiência humana, com ou sem síndrome da imunodeficiência adquirida, dos quais 7 com meningoencefalite toxoplásmica e 15 com meningoencefalite chagásica associadas, procuraram-se dados diferenciais, entre as duas encefalopatias, tanto à anatomia patológica quanto à tomografia computadorizada do crânio. Os resultados observados e os dados da literatura nos permitiram concluir que enquanto na meningoencefalite necrosante focal por Toxoplasma gondii o acometimento dos núcleos da base é freqüente, na meningoencefalite necrosante focal causada pelo Trypanosoma cruzi, lesões dessas estruturas parecem não ocorrer ou ser excepcionais. De outro lado, o acometimento da substância branca parece nitidamente maior na meningoencefalite chagásica que na meningoencefalite toxoplásmica, ao passo que o parasitismo e a hemorragia do tecido nervoso, bem como as lesões das bainhas de mielina são mais freqüentes e intensos na meningoencefalite causada pelo Trypanosoma cruzi que naquela por Toxoplasma.Twenty-two HIV+ patients with encephalitis were studied. Of these, 7 had meningoencephalitis due to Toxoplasma gondii (MT and 15 due to Trypanosoma cruzi (MC. Pathologic and computerized axial tomography (CAT changes were compared. We found that focal necrotizing encephalitis due to Toxoplasma involved the cerebral cortex and the basal ganglia, whereas lesions due to Trypanosoma cruzi were centered in the white matter, sometimes extending into the cortex. Hemorrhages, myelin lesions and organisms were more pronounced in chagasic than in toxoplasmic encephalitis. These findings are consistent with the literature reviewed.

  18. Síndrome de personalidade interictal na epilepsia do lobo temporal não-dominante: relato de caso Interictal personality syndrome in temporal lobe epilepsy: case report

    Directory of Open Access Journals (Sweden)

    PAULO C. TREVISOL-BITTENCOURT

    2000-06-01

    Full Text Available A síndrome de personalidade interictal na epilepsia do lobo temporal não-dominante consiste de hipossexualidade, hiperreligiosidade, alteração do humor e hipergrafia. Sua descrição, em 1974, foi seguida de extensa busca por estes sinais em uma vasta população de pacientes epilépticos. No entanto, estes estudos científicos fracassaram em encontrar este síndrome na epilepsia do lobo temporal em geral. Sua existência foi, por conseguinte, posta em dúvida. Apresentamos o caso de um senhor de 35 anos cuja peculiaridade hipergráfica é o desenho de plantas de construção civil em grande quantidade, além de hiperreligiosidade, hipossexualidade e circunstancialidade. É o primeiro relato deste tipo de expressão gráfica associada à epilepsia parcial complexa e esclerose mesial temporal. Dentre os mecanismos fisiopatológicos propostos, o mais coerente é o da hiperconexão temporal. Embora as crises possam ser controladas em grande parte dos casos com tratamento clínico ou cirúrgico, a sintomatologia comportamental é refratária ao tratamento psicoterápico.The syndrome of interictal personality in non-dominant temporal lobe epilepsy consists of hyposexuality, hyperreligiosity, humorlessness and hypergraphia. Its notification, in 1974, was followed by an extensive search for these traits in broad epileptic populations. Nevertheless, these statistical studies failed to match this syndrome in general temporal lobe epileptics, and its existence became then target of doubt. We report the case of a 35 year-old man presenting partial complex epilepsy, whose singularity lies in his sophisticated drawing abilities. The large amount of buildings and houses he paints expresses his hypergraphia. He also presents hyposexuality and hyperreligiosity. MRI shows right mesial temporal sclerosis. Temporal hyperconnection, caused by a basal temporal irritative focus, is the most probable pathophysiological mechanism. Epileptic fits can be controlled

  19. Načrtovan porod na domu

    OpenAIRE

    Todorović, Tamara; Takač, Iztok

    2017-01-01

    Izhodišča: Porod na domu je sicer star toliko kot človeštvo, pa vendar v veliki večini srednje in visoko razvitih držav prevladuje mnenje, da so zaradi nepredvidljivosti zapletov porodnišnice najbolj varno okolje za rojevanje. Kljub temu obstaja peščica držav, v katerih je porod na domu integriran v sistem zdravstvenega varstva (npr. Nizozemska, Velika Britanija, Kanada). Pri porodih na domu ločimo nenačrtovane in načrtovane porode na domu, slednje pa lahko nadalje razdelimo še na porode s sp...

  20. Occurrence of anti-Neospora caninum and anti-Toxoplasma gondii IgG antibodies in goats and sheep in western Maranhão, Brazil Ocorrência de anticorpos IgG anti-Neospora caninum e anti-Toxoplasma gondii em caprinos e ovinos do oeste do Maranhão, Brasil

    Directory of Open Access Journals (Sweden)

    Larissa Martins de Brito Moraes

    2011-12-01

    Full Text Available Neosporosis and toxoplasmosis are parasitic diseases which can cause reproductive problems in goats and sheep. The current study aimed to determine the occurrence of anti-Neospora caninum and anti-Toxoplasma gondii IgG antibodies in goats and sheep from the districts of Amarante do Maranhão and Buritirana, Imperatriz microregion, western area of Maranhão State, northeastern Brazil, and to assess factors associated to infection by these etiologic agents. Blood samples from 110 animals (46 goats and 64 sheep from five herds were collected, and indirect immunofluorescence assay was used for serological testing. Of 46 goat samples, 17.39% (n = 8 showed anti-N. caninum antibodies and 4.35% (n = 2 anti-T. gondii, while of 64 sheep samples 4.69% (n = 3 and 18.75% (n = 12 showed anti-N. caninum and anti-T. gondii antibodies, respectively. No significant difference regarding the presence of domestic cats and/or dogs on the property and veterinary care was seen for both etiologic agents studied. However, food supplementation and animal reproductive failure were significantly (p A neosporose e a toxoplasmose são doenças parasitárias que podem causar problemas reprodutivos em caprinos e ovinos. O objetivo deste estudo foi determinar a ocorrência de anticorpos IgG anti-Neospora caninum e anti-Toxoplasma gondii em caprinos e ovinos dos municípios de Amarante do Maranhão e Buritirana, microrregião de Imperatriz, Oeste maranhense, Nordeste do Brasil, bem como avaliar fatores associados à infecção por esses agentes etiológicos. Amostras de sangue de 110 animais (46 caprinos e 64 ovinos, provenientes de cinco propriedades, foram coletadas, e a reação de imunofluorescência indireta utilizada para o diagnóstico sorológico. Das 46 amostras de caprinos, 17,39% (n = 8 apresentaram anticorpos anti-N. caninum e 4,35% (n = 2 anti-T. gondii, enquanto das 64 amostras de ovinos, 4,69% (n = 3 e 18,75% (n = 12 apresentaram anticorpos anti-N. caninum e anti

  1. Intelligent saline enabled self-healing of multilayer coatings and its optimization to achieve redox catalytically provoked anti-corrosion ability

    Energy Technology Data Exchange (ETDEWEB)

    Syed, Junaid Ali; Tang, Shaochun; Meng, Xiangkang, E-mail: mengxk@nju.edu.cn

    2016-10-15

    Highlights: • Multilayer coatings were prepared with good self-healing and anti-corrosion ability. • The lifespan of SS is much improved and it is stable even after 120 h in 3.5% NaCl. • Multilayer structure with redox catalytic and self-healing ability leads to high P{sub e}. • Saline-triggered self-healing and anti-corrosion mechanisms were envisaged. - Abstract: To obtain a coating with both self-healing and redox catalytic ability to protect a metal substrate from corrosion under aggressive environment is strongly desired. Herein, we report the design and fabrication of intelligent polyaniline-polyacrylic acid/polyethyleneimine (PANI-PAA/PEI) multilayer composite coatings by spin assembly. The main influencing factors, including solution concentration (c) and disk rotating speed (ω) were studied in order to gain excellent performance. The resulting multilayer coatings with thickness in a range from 0.47 to 2.94 μm can heal severe structural damages and sustain a superior anti-corrosive performance for 120 h in 3.5% NaCl. The PANI-PAA layer enhances the anti-corrosion property and PEI layer contributes to the self-healing ability as well as their multilayer combination strengthens them. The improved self-healing ability is attributed to the rearrangement and reversible non-covalent interactions of the PANI-PAA and PEI layers that facilitates electrostatic repairing.

  2. NA48 prototype calorimeter

    CERN Multimedia

    1990-01-01

    This is a calorimeter, a detector which measures the energy of particles. When in use, it is filled with liquid krypton at -152°C. Electrons and photons passing through interact with the krypton, creating a shower of charged particles which are collected on the copper ribbons. The ribbons are aligned to an accuracy of a tenth of a millimetre. The folding at each end allows them to be kept absolutely flat. Each shower of particles also creates a signal in scintillating material embedded in the support disks. These flashes of light are transmitted to electronics by the optical fibres along the side of the detector. They give the time at which the interaction occurred. The photo shows the calorimeter at NA48, a CERN experiment which is trying to understand the lack of anti-matter in the Universe today.

  3. Topotactic redox chemistry of NaFeAs in water and air and superconducting behavior with stoichiometry change.

    Energy Technology Data Exchange (ETDEWEB)

    Todorov, I.; Chung, D. Y.; Claus, H.; Malliakas, C. D.; Douvalis, A. P.; Bakas, T.; He, J.; Dravid, V. P.; Kanatzidis, M. G.; Materials Science Division; Northwestern Univ.; Univ. of Ioannina

    2010-07-13

    We report experimental evidence that shows superconductivity in NaFeAs occurs when it is Na deficient. The oxidation of NaFeAs progresses differently in water and in air. In water the material oxidizes slowly and slightly retaining the original anti-PbFCl structure. In air NaFeAs oxidizes topotactically quickly and extensively transforming to the ThCr{sub 2}Si{sub 2} structure type. Water acts as a mild oxidizing agent on the FeAs layer by extracting electrons and Na{sup +} cations from the structure, while oxidation in air is more extensive and leads to change in structure type from NaFeAs to NaFe{sub 2}As{sub 2}. The superconducting transition temperature moves dramatically during the oxidation process. Exposed to water for an extended time period NaFeAs shows a substantial increase in T{sub c} up to 25 K with contraction of unit cell volume. NaFe{sub 2}As{sub 2}, the air oxidized product, shows T{sub c} of 12 K. We report detailed characterization of the redox chemistry and transformation of NaFeAs in water and air using single crystal and powder X-ray diffraction, magnetization studies, transmission electron microscopy, Moessbauer spectroscopy, pOH and elemental analysis.

  4. Anti-mutated citrullinated vimentin (anti-MCV) and anti-65 kDa heat shock protein (anti-hsp65): new biomarkers in ankylosing spondylitis.

    Science.gov (United States)

    Bodnár, Nóra; Szekanecz, Zoltán; Prohászka, Zoltán; Kemény-Beke, Adám; Némethné-Gyurcsik, Zsuzsanna; Gulyás, Katalin; Lakos, Gabriella; Sipka, Sándor; Szántó, Sándor

    2012-01-01

    Citrullination as well as anti-citrullinated protein/peptide antibodies (ACPA) have been implicated in the pathogenesis of rheumatoid arthritis (RA). While ACPAs are specific and sensitive markers for RA, there have been hardly any reports regarding ACPAs in ankylosing spondylitis (AS). The possible role of antibodies to Mycobacterial 65 kDa heat shock protein (hsp65) has not been characterized in AS. As new laboratory biomarkers of AS are needed, we investigated the prevalence of anti-mutated citrullinated vimentin (MCV) and anti-hsp65 antibodies in AS. Altogether 43 AS and 44 healthy controls were included in the study. Anti-MCV and anti-hsp65 were determined in sera by commercial and in-house ELISA, respectively. Serum autoantibody levels were correlated with ESR, CRP, HLA-B27 status, smoking habits, pain intensity, BASDAI, BASFI and BASMI indices. Patients with AS had significantly higher serum anti-MCV levels (17.3 U/mL, range: 8.3-31.5 U/mL) in comparison to healthy subjects (8.9 U/mL, range: 5.4-13.3 U/mL) (p20 U/mL). The mean anti-hsp65 concentration in AS sera was 124.8 AU/mL (range: 27.2-1000 AU/mL), while controls exerted significantly lower anti-hsp65 levels (mean: 51.8 AU/mL; range: 22.5-88.5 AU/mL) (p<0.001). Correlation analysis revealed that both anti-MCV positivity (r=0.613; p=0.012) and absolute serum anti-MCV levels (r=0.553; p=0.021) correlated with anti-hsp65 levels. Anti-MCV positivity also correlated with ESR (r=0.437; p=0.03). Anti-MCV and anti-hsp65 may be novel biomarkers in AS. Copyright © 2011. Published by Elsevier SAS.

  5. Anti-inflammatory and Antinociceptive Activity of Ouabain in Mice

    Directory of Open Access Journals (Sweden)

    Danielle Ingrid Bezerra de Vasconcelos

    2011-01-01

    Full Text Available Ouabain, an inhibitor of the Na+/K+-ATPase pump, was identified as an endogenous substance of human plasma. Ouabain has been studied for its ability to interfere with various regulatory mechanisms. Despite the studies portraying the ability of ouabain to modulate the immune response, little is known about the effect of this substance on the inflammatory process. The aim of this work was to study the effects triggered by ouabain on inflammation and nociceptive models. Ouabain produced a reduction in the mouse paw edema induced by carrageenan, compound 48/80 and zymosan. This anti-inflammatory potential might be related to the inhibition of prostaglandin E2, bradykinin, and mast-cell degranulation but not to histamine. Ouabain also modulated the inflammation induced by concanavalin A by inhibiting cell migration. Besides that, ouabain presented antinociceptive activity. Taken these data together, this work demonstrated, for the first time, that ouabain presented in vivo analgesic and anti-inflammatory effects.

  6. Diffusion and the dynamics of displacive phase transitions in cryolite (Na3AlF6) and chiolite (Na5Al3F14): Multi-nuclear NMR studies

    Science.gov (United States)

    Spearing, Dane R.; Stebbins, Jonathan F.; Farnan, Ian

    1994-10-01

    Cryolite is a mixed-cation perovskite (Na2(NaAl)F6) which undergoes a monoclinic to orthorhombic displacive phase transition at ˜550° C. Chiolite (Na5Al3F14) is associated with cryolite in natural deposits, and consists of sheets of corner sharing [AlF6] octahedra interlayered with edge-sharing [NaF6] octahedra. Multi-nuclear NMR line shape and relaxation time (T1) studies were performed on cryolite and chiolite in order to gain a better understanding of the atomic motions associated with the phase transition in cryolite, and Na diffusion in cryolite and chiolite. 27Al, 23Na, and 19F static NMR spectra and T1's in cryolite suggest that oscillatory motions of the [AlF6] octahedra among four micro-twin and anti-phase domains in α-cryolite begin at least 150° C below the transition temperature and persist above it. Variable temperature 23Na MAS NMR further indicates diffusional exchange at a rate of at least 13 kHz between the Na sites by the time the transition temperature is reached. 27Al and 23Na T1's show the same behavior with increasing temperature, indicating the same relaxation mechanisms are responsible for both. The first order nature of the cryolite transition is apparent as a jump in the 23Na and 27Al T1's. Above the transition temperature, the T1's decrease slightly indicating that the motions responsible for the drop in T1, are still present above the transition, further supporting the dynamic nature of the high temperature phase of cryolite. Chiolite 23Na static spectra decrease in linewidth with increasing temperature, indicating increased Na diffusion, which is interpreted as occurring within the [NaF6] sheets in the chiolite structure, but not between the two different Na sites. 27Al and 23Na T1's show similar behavior as in cryolite, but there is no discontinuity due to a phase transition. 19F T1's are constant from room temperature to 150° C indicating no oscillatory motion of the [AlF6] octahedra in chiolite.

  7. Methane explosion suppression characteristics based on the NaHCO3/red-mud composite powders with core-shell structure.

    Science.gov (United States)

    Wang, Yan; Cheng, Yi-Shen; Yu, Ming-Gao; Li, Yao; Cao, Jian-Liang; Zheng, Li-Gang; Yi, Hong-Wei

    2017-08-05

    The NaHCO 3 /red-mud (RM) composite powders were successfully prepared by the solvent-anti-solvent method for methane explosion suppression. The RM was used as a carrier, and the NaHCO 3 was used as a loaded inhibitor. The NaHCO 3 /RM composite powders showed a special core-shell structure and excellent endothermic performance. The suppression properties of NaHCO 3 /RM composite for 9.5% CH 4 explosion were tested in a 20L spherical explosion vessel and a 5L Perspex duct. The results showed that the NaHCO 3 /RM composite powders displayed a much better suppression property than the pure RM or NaHCO 3 powders. The loading amount of NaHCO 3 has an intensive influence on the inhibition property of NaHCO 3 /RM composite powders. The best loaded content of NaHCO 3 is 35%. It exhibited significant inhibitory effect that the explosion max-pressure declined 44.9%, the max-pressure rise rate declined 96.3% and the pressure peak time delayed 366.7%, respectively. Copyright © 2017 Elsevier B.V. All rights reserved.

  8. Tratamento dos angiofibromas múltiplos da face com radiofrequência Multiple facial angiofibromas treated with high-frequency equipment

    Directory of Open Access Journals (Sweden)

    Allysson Antonio Ribeiro Gomes

    2011-08-01

    Full Text Available Esclerose tuberosa é uma doença genética rara, com herança autossômica dominante, associada à formação de hamartomas múltiplos em vários órgãos, como cérebro, pele, pulmões, rins, coração e olhos. Os autores deste estudo apresentam um caso de uma paciente do sexo feminino, com 30 anos de idade, portadora de esclerose tuberosa, apresentando múltiplos angiofibromas em face, tratada com equipamento de alta frequência (radiofrequência, e discutem as opções terapêuticas para tratamento de indivíduos portadores de esclerose tuberosa com extenso envolvimento cutâneoTuberous sclerosis is a rare genetic disease with autosomal dominant inheritance, associated with multiple hamartomas in several organs, such as the brain, skin, lung, kidney, heart and eyes. The authors of this study report a case of a 30 years old female patient with tuberous sclerosis, presenting multiple angiofibromas on face treated with high frequency equipment (radiofrequency, and discuss the therapeutic options for treatment of individuals with extensive cutaneous involvement in tuberous sclerosis

  9. Hematopoietic stem cell transplantation for autoimmune diseases in Brazil: current status and future prospectives O transplante de células precursoras hematopoéticas em doenças autoimunes no Brasil: estado atual e perspectivas

    Directory of Open Access Journals (Sweden)

    Júlio C. Voltarelli

    2002-01-01

    Full Text Available In this paper, we discuss the launching of a cooperative protocol of hematopoietic stem cell transplantation for autoimmune diseases in Brazil. We present specific conditions of the country's health system which would affect the trial, preliminary results of the first nine patients transplanted under the protocol (4 systemic lupus, 3 multiple sclerosis, one systemic sclerosis and one overlapping lupus + systemic sclerosis and future prospectives of organizing phase III randomized trials to answer specific scientific questions pending in the field.Neste trabalho, discutimos a implantação de um protocolo cooperativo de transplante de células tronco hematopoéticas para doenças auto-imunes no Brasil. Apresentamos as condições específicas do sistema de saúde do país que poderiam afetar o projeto, resultados preliminares dos primeiros nove pacientes transplantados (quatro com lúpus sistêmico, três com esclerose múltipla, um com esclerose sistêmica e um com superposição de lúpus com esclerose sistêmica e perspectivas futuras de organização de estudos randomizados de fase III para responder questões específicas pendentes nesta área.

  10. Investigation of the decays anti B0 → D*+l-anti ν and anti B → D**l-anti ν

    International Nuclear Information System (INIS)

    Albrecht, H.; Ehrlichmann, H.; Hamacher, T.; Hofmann, R.P.; Kirchhoff, T.; Nau, A.; Nowak, S.; Schroeder, H.; Schulz, H.D.; Walter, M.; Wurth, R.; Appuhn, R.D.; Hast, C.; Kolanoski, H.; Lange, A.; Lindner, A.; Mankel, R.; Schieber, M.; Siegmund, T.; Spaan, B.; Thurn, H.; Toepfer, D.; Walther, A.; Wegener, D.; Britton, D.I.; Charlesworth, C.E.K.; Edwards, K.W.; Hyatt, E.R.F.; Kapitza, H.; Krieger, P.; MacFarlane, D.B.; Patel, P.M.; Prentice, J.D.; Saull, P.R.B.; Tzamariudaki, K.; Van de Water, R.G.; Yoon, T.S.; Ressing, D.; Schmidtler, M.; Schneider, M.; Schubert, K.R.; Strahl, K.; Waldi, R.; Weseler, S.

    1993-01-01

    Exclusive semileptonic B decays with a D *+ meson in the final state have been studied using the ARGUS detector at the DORIS II storage ring. The branching ratio for the decay anti B 0 →D *+ l - anti ν, where l - is either e - or μ - , has been measured to be (5.2±0.5±0.6)%. A significant rate for the decay anti B→D ** l - anti ν has been observed. From an angular analysis of the cascade anti B 0 →D *+ (→D 0 π + )l - anti ν the forward-backward asymmetry A FB and the D *+ polarization parameter α have been determined to be A FB =0.20±0.08±0.06 and α=1.1±0.4±0.2. (orig.)

  11. NaVirCept - Nucleic Acid-Based Anti-Viral Project

    International Nuclear Information System (INIS)

    Stephen, E. R.; Wong, J.; Van Loon, D.

    2007-01-01

    Vaccines are generally considered to be the most effective countermeasures to bacterial and viral diseases, however, licensed vaccines against many disease agents are either not available or their efficacies have not been demonstrated. Vaccines are generally agent specific in terms of treatment spectrum and are subject to defeat through natural mutation or through directed efforts. With respect to viral therapeutics, one of the major limitations associated with antiviral drugs is acquired drug resistance caused by antigenic shift or drift. A number of next-generation prophylactic and/or therapeutic measures are on the horizon. Of these, nucleic acid-based drugs are showing great antiviral potential. These drugs elicit long-lasting, broad spectrum protective immune responses, especially to respiratory viral pathogens. The Nucleic Acid-Based Antiviral (NaVirCept) project provides the opportunity to demonstrate the effectiveness of novel medical countermeasures against military-significant endemic and other viral threat agents. This project expands existing DRDC drug delivery capability development, in the form of proprietary liposome intellectual property, by coupling it with leading-edge nucleic acid-based technology to deliver effective medical countermeasures that will protect deployed personnel and the warfighter against a spectrum of viral disease agents. The technology pathway will offer a means to combat emerging viral diseases or modified threat agents such as the bird flu or reconstructed Spanish flu without going down the laborious, time-consuming and expensive paths to develop countermeasures for each new and/or emerging viral disease organism.(author)

  12. Oxidative stress (glutathionylation and Na,K-ATPase activity in rat skeletal muscle.

    Directory of Open Access Journals (Sweden)

    Carsten Juel

    Full Text Available Changes in ion distribution across skeletal muscle membranes during muscle activity affect excitability and may impair force development. These changes are counteracted by the Na,K-ATPase. Regulation of the Na,K-ATPase is therefore important for skeletal muscle function. The present study investigated the presence of oxidative stress (glutathionylation on the Na,K-ATPase in rat skeletal muscle membranes.Immunoprecipitation with an anti-glutathione antibody and subsequent immunodetection of Na,K-ATPase protein subunits demonstrated 9.0±1.3% and 4.1±1.0% glutathionylation of the α isoforms in oxidative and glycolytic skeletal muscle, respectively. In oxidative muscle, 20.0±6.1% of the β1 units were glutathionylated, whereas 14.8±2.8% of the β2-subunits appear to be glutathionylated in glycolytic muscle. Treatment with the reducing agent dithiothreitol (DTT, 1 mM increased the in vitro maximal Na,K-ATPase activity by 19% (P<0.05 in membranes from glycolytic muscle. Oxidized glutathione (GSSG, 0-10 mM increased the in vitro glutathionylation level detected with antibodies, and decreased the in vitro maximal Na,K-ATPase activity in a dose-dependent manner, and with a larger effect in oxidative compared to glycolytic skeletal muscle.This study demonstrates the existence of basal glutathionylation of both the α and the β units of rat skeletal muscle Na,K-ATPase. In addition, the study suggests a negative correlation between glutathionylation levels and maximal Na,K-ATPase activity.Glutathionylation likely contributes to the complex regulation of Na,K-ATPase function in skeletal muscle. Especially, glutathionylation induced by oxidative stress may have a role in Na,K-ATPase regulation during prolonged muscle activity.

  13. Avaliação farmacologica do aspirinato de atenolol como droga antiplaquetaria e anti-hipertensiva

    OpenAIRE

    Ana Cecilia Montes Gil

    2007-01-01

    Resumo: No presente trabalho, foram avaliados os efeitos farmacológicos do Aspirinato de atenolol (AA T) uma potencial pró-droga mútua resultado da combinação química entre ácido acetilsalicílico (AAS) e atenolo!. As propriedades do AA T como droga antitrombótica foram avaliadas na inibição da agregação plaquetária estimulada in vitro e na inibição da produção de tromboxano estimulada ex-vivo em sangue de animais tratados. Por outro lado, o AA T foi avaliado como droga anti-hipertensiva no m...

  14. Varizes de fundo gástrico na hipertensão portal esquistossomótica: resultados cirúrgicos

    Directory of Open Access Journals (Sweden)

    Álvaro Antônio Bandeira Ferraz

    Full Text Available OBJETIVO: Apresentar dados epidemiológicos de pacientes esquistossomóticos na forma hepatoesplênica com varizes do fundo gástrico, assim como avaliar os resultados de uma estratégia cirúrgica no manuseio destas varizes. MÉTODO: No período de janeiro de 1992 à julho de 2001 foram acompanhados no Serviço de Cirurgia Geral do Hospital das Clínicas da Universidade Federal de Pernambuco 125 pacientes submetidos à esplenectomia com ligadura da veia gástrica esquerda (LVGE, desvascularização da grande curvatura do estômago e esclerose endoscópica pós-operatória, para o tratamento da hipertensão portal esquistossomótica com antecedentes de hemorragia digestiva. Quando da presença de varizes de fundo gástrico (44/125 foi associado ao procedimento cirúrgico, a abertura do estômago e sutura das varizes. RESULTADOS: Varizes de fundo gástrico foram identificadas em 35,2% (44/125 dos pacientes com esquistossomose hepatoesplênica e antecedentes de hemorragia digestiva alta. Durante o seguimento de 26 meses o procedimento cirúrgico erradicou 76,5% das varizes de fundo gástrico. A incidência de trombose da veia porta no período pós-operatório foi maior no grupo de pacientes sem varizes de fundo gástrico (16,3% quando comparado com os pacientes portadores de varizes de fundo gástrico (8,8%, sem que, no entanto, esta diferença tivesse respaldo estatístico (p = 0,62. Não se identificou correlação entre a presença de varizes do fundo gástrico e o grau de fibrose periportal e o peso do baço. Na análise bioquímica e hematológica, no período pré-operatório dos grupos estudados, o número de leucócitos foi estatisticamente menor no grupo de pacientes que apresentavam varizes de fundo gástrico. CONCLUSÃO: A esplenectomia associada a desvascularização da grande curvatura do estômago, ligadura da veia gástrica esquerda, gastrotomia e sutura da varizes de fundo gástrico, erradicou 76,5% das varizes de fundo g

  15. Arctigenin antagonizes mineralocorticoid receptor to inhibit the transcription of Na/K-ATPase.

    Science.gov (United States)

    Cheng, Ye; Zhou, Meili; Wang, Yan

    2016-01-01

    Hypertension is one of the most important risk factors in cardiovascular disease and is the most common chronic disease. Mineralocorticoid receptor (MR) antagonists have been successfully used in clinic for the treatment of hypertension. Our study aims to investigate whether Arctigenin can antagonize MR and inhibit the transcription of Na/K-ATPase. The yeast two-hybrid assay was used to screen natural products and Arctigenin was identified as an MR antagonist. The direct binding of Arctigenin to MR was determined using assays based on surface plasmon resonance, differential scanning calorimetry and fluorescence quenching. Furthermore, results from mammalian one-hybrid and transcriptional activation experiments also confirmed that Arctigenin can potently antagonize MR in cells. We demonstrated that Arctigenin can decrease the level of Na/K-ATPase mRNA by antagonizing MR in HK-2 cells. Our findings show that Arctigenin can effectively decrease Na/K-ATPase transcription; thus highlight its potential as an anti-hypertensive drug lead compound. Our current findings demonstrate that Arctigenin is an antagonist of MR and effectively decreases the Na/K-ATPase 1 gene expression. Our work provides a hint for the drug discovery against cardiovascular disease.

  16. Partial wave analysis of anti pp → anti ΛΛ

    International Nuclear Information System (INIS)

    Bugg, D.V.

    2004-01-01

    A partial wave analysis of PS185 data for anti pp → anti ΛΛ is presented. A 3 S 1 cusp is identified in the inverse process anti ΛΛ→ anti p p at threshold, using detailed balance to deduce cross sections from anti pp → anti ΛΛ. Partial wave amplitudes for anti pp 3 P 0 , 3 F 3 , 3 D 3 and 3 G 3 exhibit a behaviour very similar to resonances observed in Crystal Barrel data. With this identification, the anti pp → anti ΛΛ data then provide evidence for a new I=0, J PC =1 - resonance with mass M = 2290 ±20 MeV, Γ= 275 ±35 MeV, coupling to both 3 S 1 and 3 D 1 . (orig.)

  17. Triply heavy tetraquark states with the QQ anti Q anti q configuration

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Kan; Liu, Xiang [Lanzhou University, School of Physical Science and Technology, Lanzhou (China); Lanzhou University and Institute of Modern Physics of CAS, Research Center for Hadron and CSR Physics, Lanzhou (China); Liu, Yan-Rui; Wu, Jing [Shandong University, School of Physics and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Jinan (China); Zhu, Shi-Lin [Peking University, School of Physics and State Key Laboratory of Nuclear Physics and Technology, Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China); Peking University, Center of High Energy Physics, Beijing (China)

    2017-01-15

    In the framework of the color-magnetic interaction, we systematically investigate the mass splittings of the QQ anti Q anti q tetraquark states and estimate their rough masses in this work. These systems include the explicitly exotic states cc anti b anti q and bb anti c anti q and the hidden exotic states cc anti c anti q, cb anti b anti q, bc anti c anti q, and bb anti b anti q. If a state around the estimated mass region can be observed, its nature as a genuine tetraquark is favored. The strong decay patterns shown here will be helpful to the experimental search for these exotic states. (orig.)

  18. Research on Grooved Concrete Pavement Based on the Durability of Its Anti-Skid Performance

    Directory of Open Access Journals (Sweden)

    Mulian Zheng

    2018-05-01

    Full Text Available The objectives of the present study are to investigate the anti-skid performance of concrete pavement and to attempt to enhance its durability by two different methods: using a longitudinally-transversely grooved (LT form, and using a self-developed composite curing agent containing paraffin and Na2SiO3 as the main ingredients. The friction coefficient (μ was measured by self-developed equipment to evaluate the anti-skid performance of samples with three different groove forms (LT, longitudinally grooved (L, and transversely grooved (T. Abrasion tests were then carried out to evaluate the durability of the anti-skid performance. The results indicated that anti-skid performance of LT samples was approximately 46.2% greater than that of T samples, but its durability was not as significant as that of T samples. However, the resistance to abrasion could be improved by using the aforementioned curing agent. Comparisons were carried out between samples sprayed the curing agent and control samples without any curing agent under standard conditions. It was found that the application of the curing agent increased the anti-skid durability of concrete by 35.4%~47.8%, proving it to be a useful and promising technique.

  19. O uso de anti-retrovirais em gestantes modifica o perfil lipídico?

    Directory of Open Access Journals (Sweden)

    El Beitune Patrícia

    2003-01-01

    Full Text Available OBJETIVO: avaliar o efeito das medicações anti-retrovirais sobre o metabolismo lipídico em gestantes portadoras do HIV. MÉTODOS: estudo prospectivo realizado em 57 gestantes que foram divididas em três grupos: grupo AZT, com 20 pacientes portadoras do HIV em uso de AZT; grupo TT, com 25 pacientes portadoras do HIV em uso de esquemas contendo três anti-retrovirais (AZT + 3TC + NFV e grupo controle, com 12 pacientes. Os dados demográficos e antropométricos foram homogêneos entre os grupos estudados. Foram excluídas as pacientes com antecedentes pessoais ou familiares de hiperlipidemia. Amostras sanguíneas foram obtidas para avaliação dos lipídeos (colesterol total, frações LDL e HDL-colesterol e triglicerídeos em quatro oportunidades durante a gravidez (1º = 14-20 semanas; 2º = 21-26 semanas; 3º = 27-32 semanas e 4º = 33-38 semanas. Os dados foram analisados utilizando-se os testes não paramétricos do chi², teste de Friedman e teste de Kruskal-Wallis. RESULTADOS: o uso de anti-retrovirais durante a gestação não induziu diferenças nas taxas do colesterol total e HDL, no entanto, o uso destes agentes esteve associado a elevação de 76,5 mg/dL e 84 mg/dL para 96 mg/dL e 105 mg/dL na concentração da fração LDL-colesterol para os grupos AZT e TT, respectivamente (p<0,01. Observou-se associação positiva significante entre os triglicerídeos e a carga viral nas gestantes do grupo AZT (r = 0,53; p = 0,015. CONCLUSÃO: a utilização dos anti-retrovirais durante a gestação eleva significativamente a concentração da lipoproteína LDL. Persistem as dúvidas se a gestação potencializa a longo prazo os efeitos dos anti-retrovirais sobre o metabolismo lipídico.

  20. Hybrid mesons (Q anti Qg) in N anti N annihilation

    International Nuclear Information System (INIS)

    Dover, C.B.; Gutsche, T.; Faessler, A.

    1993-09-01

    N anti N annihilation reactions provide exciting possibilities to study mesonic resonances beyond the usual Q anti Q spectrum. Particularly the search for Q anti Qg mesons containing an explicit dynamical excitation of the gluon field is not promising, since hybrids are predicted to display unique features: exotic quantum numbers (J πC ) and dynamical selection rules for their decay modes. The authors have investigated the possibility of producing hybrids from p anti p atomic states in reactions of the type N anti N(L= 0,1) → π + Q anti Qg. Production rates for hybrid mesons are found to display a strong dependence on the quantum numbers and kinematical factors associated with the transition. The dependence on the orbital angular momentum L of the p anti p atomic state, accessible in p anti p annihilation at rest, would provide a striking signature for the production of hybrids. In estimating branching ratios for the formation of Q anti Qg hybrid mesons in N anti N annihilation reactions at rest, the authors have employed a microscopic model with constituent quarks and gluons in analogy to the annihilation model for the production of Q anti Q mesons

  1. Secapin, a bee venom peptide, exhibits anti-fibrinolytic, anti-elastolytic, and anti-microbial activities.

    Science.gov (United States)

    Lee, Kwang Sik; Kim, Bo Yeon; Yoon, Hyung Joo; Choi, Yong Soo; Jin, Byung Rae

    2016-10-01

    Bee venom contains a variety of peptide constituents that have various biological, toxicological, and pharmacological actions. However, the biological actions of secapin, a venom peptide in bee venom, remain largely unknown. Here, we provide the evidence that Asiatic honeybee (Apis cerana) secapin (AcSecapin-1) exhibits anti-fibrinolytic, anti-elastolytic, and anti-microbial activities. The recombinant mature AcSecapin-1 peptide was expressed in baculovirus-infected insect cells. AcSecapin-1 functions as a serine protease inhibitor-like peptide that has inhibitory effects against plasmin, elastases, microbial serine proteases, trypsin, and chymotrypsin. Consistent with these functions, AcSecapin-1 inhibited the plasmin-mediated degradation of fibrin to fibrin degradation products, thus indicating the role of AcSecapin-1 as an anti-fibrinolytic agent. AcSecapin-1 also inhibited both human neutrophil and porcine pancreatic elastases. Furthermore, AcSecapin-1 bound to bacterial and fungal surfaces and exhibited anti-microbial activity against fungi and gram-positive and gram-negative bacteria. Taken together, our data demonstrated that the bee venom peptide secapin has multifunctional roles as an anti-fibrinolytic agent during fibrinolysis and an anti-microbial agent in the innate immune response. Copyright © 2016 Elsevier Ltd. All rights reserved.

  2. Isolation and characterization of a specific endogenous Na+, K+-ATPase inhibitor from bovine adrenal

    International Nuclear Information System (INIS)

    Tamura, M.; Lam, T.T.; Inagami, T.

    1988-01-01

    In order to identify a specific endogenous Na + ,K + -ATPase inhibitor which could possibly be related to salt-dependent hypertension, the authors looked for substances in the methanol extract of bovine whole adrenal which show all of the following properties: (i) inhibitory activity for Na + ,K + -ATPase; (ii) competitive displacing activity against [ 3 H]ouabain binding to the enzyme; (iii) inhibitory activity for 86 Rb uptake into intact human erythrocytes; and (iv) cross-reactivity with sheep anti-digoxin-specific antibody. After stepwise fractionation of the methanol extract of bovine adrenal glands by chromatography on a C 18 open column, a 0-15% acetonitrile fraction was fractionated by high-performance liquid chromatography on a Zorbax octadecylsilane column. One of the most active fractions in 0-15% acetonitrile was found to exhibit all of the four types of the activities. It was soluble in water and was distinct from various substances which have been known to inhibit Na + ,K + -ATPase. These results strongly suggest that this water-soluble nonpeptidic Na + ,K + -ATPase inhibitor may be a specific endogenous regulator for the ATPase

  3. Perfil lipídico e uso de anti-TNF-α

    Directory of Open Access Journals (Sweden)

    Antonio Carlos Ferraz Filho

    2013-10-01

    Full Text Available O uso do anti-TNF alfa tem sido associado a várias alterações no perfil lipídico, embora o estudo dessas alterações tenha gerado resultados que ainda são conflitantes. O conhecimento desse fato é de grande importância quando se observa a associação entre doenças reumáticas e aterogenêse acelerada. Esta pesquisa foi feita com o intuito de verificar alterações no perfil lipídico de usuários de anti-TNF-α na população do sul do Brasil e sua associação com tempo de uso, indicações, gênero do paciente e tipo de anti-TNF. Para tanto, analisaram-se os perfis de colesterol total (TC, HDL colesterol (HDLc, LDL colesterol (LDLc, índice aterogênico (IAT e triglicerídeos (TGs de 58 pacientes (42 com artrite reumatoide e 16 com espondiloartrites antes e depois do uso desse medicamento por um tempo mediano de 16,0 meses. Não se observaram alterações nos níveis de CT, HDLc, LDLc e IAT (P = NS. Todavia, houve um aumento significativo nos níveis de TGs (P = 0,03. A diferença mediana dos valores de TGs entre primeira e segunda medidas foi de 16 mg/dL, e esse aumento não estava associado ao gênero do paciente, tempo de uso, indicação de uso ou tipo de anti-TNF-α (P = NS. Concluiu-se que o uso de anti TNF-α está associado com aumento nos valores de TGs.

  4. Experimental study of the action of COX-2 selective nonsteroidal anti-inflammatory drugs and traditional anti-inflammatory drugs in bone regeneration Estudo experimental da ação dos anti-inflamatórios não hormonais inibidores seletivos da ciclooxigenase 2 (COX-2 e anti-inflamatórios tradicionais na regeneração óssea

    Directory of Open Access Journals (Sweden)

    Bruno C. Tiseo

    2006-06-01

    Full Text Available OBJECTIVE: The aim of this study is to compare the effects of traditional nonsteroidal anti-inflammatory drugs with nonsteroidal anti-inflammatory drugs that are selective cyclooxygenase-2 (COX-2 inhibitors in the process of bone regeneration in a rat model. MATERIALS AND METHODS: Forty-four Wistar strain rats were subjected to osteotomy of the right femur and randomly divided into 3 groups according to the drug to be given (diclofenac, rofecoxib, or placebo. Each group was divided into 2 subgroups according to the time to euthanasia after the surgery. The animals of Subgroup 1 were submitted to euthanasia 2 weeks after surgery, and those of Subgroup 2, underwent euthanasia 4 weeks after surgery. Radiographic examinations and bone callus histomorphometry were analyzed. RESULTS: No intergroup statistical difference was found in the bone callus area or in bone formation area 2 and 4 weeks after surgery. Intra-group analysis concerning the bone neoformation area inside the callus showed a significant difference within the diclofenac group, which presented less tissue. CONCLUSIONS: Fracture consolidation in Wistar rats occurs within less than 2 weeks, and the use of nonsteroidal anti-inflammatory drugs does not significantly influence this process.OBJETIVO: Comparar os efeitos do uso de antiinflamatórios não-esteróides tradicionais (AINES e AINES que são inibidores seletivos da ciclooxigenase-2 (COX-2, no processo de regeneração óssea em ratos. MATERIAL E MÉTODO: Quarenta e quatro ratos da linhagem Wistar submetidos a osteotomia do femur direito e divididos em três grupos, conforme o medicamento que receberam (diclofenaco, rofecoxib e placebo. Cada grupo foi dividido em dois subgrupos, conforme o tempo até o sacrifício, após a cirurgia. Os animais do subgrupo 1 foram sacrificados duas semanas após a cirurgia e os do subgrupo 2, quatro semanas após a cirurgia. Foram analisados exames radiográficos e a histomorfometria do calo

  5. Práticas educativas de ativistas engajados na luta contra a SIDA/AIDS no nordeste do Brasil

    Directory of Open Access Journals (Sweden)

    Roberto Kennedy Gomes Franco

    2014-12-01

    Full Text Available O fio-condutor de análise dessas práticas educativas são as ações da RNP+ (Rede Nacional de Pessoas Vivendo com HIV/AIDS. A emergência deste movimento social Anti-AIDS se faz na dialética das trajetórias do enfrentamento cotidiano de luta pela vida. A análise se processa metodologicamente pela articulação de fontes diversas (orais e escritas a respeito das contradições sociais do HIV/AIDS no cenário histórico em curso na transição do século XX para o XXI. Estas práticas educativas de ativistas engajados na luta contra a SIDA/AIDS no Nordeste do Brasil caracteriza elo entre profissionais da área de saúde e pacientes, uma vez que o contato direto e cotidiano dos ativistas com as famílias reúne importantes elementos para o tratamento. Por desinformação, em decorrência das miseráveis condições de pauperismo a que são submetidos, muitos não conseguem nem se comunicar e/ou informar a respeito do desenvolvimento de seus quadros clínicos. São coisas simples, como, por exemplo, medicação que estava sendo administrada erroneamente, problema na preparação da alimentação, do condicionamento dos alimentos, etc. As práticas educativas desenvolvidas pelos ativistas servem de mediação no tratamento e de empoderamento político na luta ANTI-SIDA/AIDS. Tais aspectos exprimem uma das principais indagações deste texto, ou seja, como é entendida a experiência de adoecimento em tempos de SIDA/AIDS e qual sua relação com a História, a Sociedade e suas práticas educativas?

  6. One-step synthesis of small-sized and water-soluble NaREF4 upconversion nanoparticles for in vitro cell imaging and drug delivery.

    Science.gov (United States)

    Yang, Dongmei; Dai, Yunlu; Ma, Pingan; Kang, Xiaojiao; Cheng, Ziyong; Li, Chunxia; Lin, Jun

    2013-02-18

    Small (2-28 nm) NaREF(4) (rare earth (RE)=Nd-Lu, Y) nanoparticles (NPs) were prepared by an oil/water two-phase approach. Meanwhile, hydrophilic NPs can be obtained through a successful phase-transition process by introducing the amphiphilic surfactant sodium dodecylsulfate (SDS) into the same reaction system. Hollow-structured NaREF(4) (RE=Y, Yb, Lu) NPs can be fabricated in situ by electron-beam lithography on solid NPs. The MTT assay indicates that these hydrophilic NPs with hollow structures exhibit good biocompatibility. The as-prepared hollow-structured NPs can be used as anti-cancer drug carriers for drug storage/release investigations. Doxorubicin hydrochloride (DOX) was taken as model drug. The release of DOX from hollow α-NaLuF(4):20% Yb(3+), 2% Er(3+) exhibits a pH-sensitive release patterns. Confocal microscopy observations indicate that the NPs can be taken up by HeLa cells and show obvious anti-cancer efficacy. Furthermore, α-NaLuF(4):20% Yb(3+), 2% Er(3+) NPs show bright-red emission under IR excitation, making both the excitation and emission light fall within the "optical window" of biological tissues. The application of α-NaLuF(4):20% Yb(3+), 2% Er(3+) in the luminescence imaging of cells was also investigated, which shows a bright-red emission without background noise. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  7. Anti-CD25 mAb administration prevents spontaneous liver transplant tolerance.

    Science.gov (United States)

    Li, W; Carper, K; Liang, Y; Zheng, X X; Kuhr, C S; Reyes, J D; Perkins, D L; Thomson, A W; Perkins, J D

    2006-12-01

    Liver allografts are accepted spontaneously in all mouse strain combinations without immunosuppressive therapy. The mechanisms underlying this phenomenon remain largely undefined. In this study, we examined the effect of CD4+ CD25+ T regulatory cells (Treg) on the induction of mouse liver transplant tolerance. Orthotopic liver transplantation was performed from B10 (H2b) to C3H (H2k) mice. Depleting rat anti-mouse CD25 mAb (PC61) was given to the donors or recipients (250 microg/d IP) pretransplant or to the recipients postoperatively. At day 5 posttransplantation, both effector T cells (mainly CD8) and CD4+ CD25+ Treg were increased in the liver allografts and host spleens compared to naïve mice. Anti-CD25 mAb administration, either pretransplantation or posttransplantation, reduced the ratio of CD4+ CD25+ Treg to the CD3 T cells of liver grafts and recipient spleens and induced liver allograft acute rejection compared to IgG treatment. Anti-CD25 mAb administration elevated anti-donor T-cell proliferative responses and CTL and NK activities of graft infiltrates and host splenocytes; reduced CTLA4, Foxp3, and IDO mRNA levels; increased IL-10 and IFN-gamma; and decreased IL-4 mRNA levels in the livers or host spleens. The number of apoptotic T cells was reduced significantly in the liver grafts and treated host spleens. Therefore, anti-CD25 mAb administration changed the balance of CD4+ CD25+ Treg to activated T cells of liver graft recipients, preventing liver transplant tolerance. This was associated with enhanced anti-donor immune reactivity, downregulated Treg gene expression, and reduced T cell apoptosis in the grafts and host spleens.

  8. Efeito anti-inflamatório dos macrolídeos em doenças pulmonares da infância Anti-inflammatory effects of macrolides in childhood lung diseases

    Directory of Open Access Journals (Sweden)

    Fernanda Luisi

    2012-12-01

    Full Text Available Os macrolídeos são fármacos com efeitos antimicrobianos especialmente contra patógenos intracelulares. Vários estudos têm demonstrado possíveis efeitos anti-inflamatórios dos macrolídeos. Esses medicamentos inibem a produção de algumas interleucinas e podem reduzir a inflamação neutrofílica pulmonar. Ensaios clínicos têm demonstrado efeitos benéficos dos macrolídeos em diversas doenças pulmonares crônicas. O objetivo deste estudo foi revisar os dados recentes da literatura médica sobre os efeitos anti-inflamatórios dos macrolídeos nas doenças respiratórias da infância, através da pesquisa da base de dados Medline (PubMed dos seguintes termos em inglês: "macrolide and cystic fibrosis"; "macrolide and asthma"; "macrolide and bronchiolitis obliterans"; e "macrolide and acute bronchiolitis" Foram selecionados artigos publicados em revistas científicas internacionais entre 2001 e 2012. Estudos clínicos e evidências in vitro comprovam o efeito anti-inflamatório dos macrolídeos em doenças respiratórias. Alguns ensaios clínicos demonstram benefícios na administração de macrolídeos em pacientes com fibrose cística; porém, o risco de resistência bacteriana deve ser considerado na análise desses benefícios. Tais benefícios são controversos em outras doenças respiratórias, e seu uso rotineiro não está indicado. Mais estudos clínicos controlados são necessários para avaliar a eficácia desses medicamentos como anti-inflamatórios. Dessa forma, poderemos definir melhor os benefícios dos macrolídeos no tratamento de cada uma das situações clínicas especificadas.Macrolides are drugs that have antimicrobial effects, especially against intracellular pathogens. Various studies have shown that macrolides might also have anti-inflammatory effects. Macrolides inhibit the production of interleukins and can reduce pulmonary neutrophilic inflammation. Clinical trials have demonstrated beneficial effects of

  9. Enhancement of antinociception by coadminstration of minocycline and a non-steroidal anti-inflammatory drug indomethacin in naïve mice and murine models of LPS-induced thermal hyperalgesia and monoarthritis

    Directory of Open Access Journals (Sweden)

    Masocha Willias

    2010-12-01

    Full Text Available Abstract Background Minocycline and a non-steroidal anti-inflammatory drug (NSAID indomethacin, have anti-inflammatory activities and are both used in the management of rheumatoid arthritis. However, there are no reports on whether coadministration of these drugs could potentiate each other's activities in alleviating pain and weight bearing deficits during arthritis. Methods LPS was injected to BALB/c mice intraperitoneally (i.p. to induce thermal hyperalgesia. The hot plate test was used to study thermal nociception in naïve BALB/c and C57BL/6 mice and BALB/c mice with LPS-induced thermal hyperalgesia and to evaluate antinociceptive effects of drugs administered i.p. Monoarthritis was induced by injection of LPS intra-articularly into the right hind (RH limb ankle joint of C57BL/6 mice. Weight bearing changes and the effect of i.p. drug administration were analyzed in freely moving mice using the video-based CatWalk gait analysis system. Results In naïve mice indomethacin (5 to 50 mg/kg had no significant activity, minocycline (25 to 100 mg/kg produced hyperalgesia to thermal nociception, however, coadministration of minocycline 50 mg/kg with indomethacin 5 or 10 mg/kg produced significant antinociceptive effects in the hot plate test. A selective inhibitor of COX-1, FR122047 (10 mg/kg and a selective COX-2 inhibitor, CAY10404 (10 mg/kg had no significant antinociceptive activities to thermal nociception in naïve mice, however, coadministration of minocycline, with CAY10404 but not FR122047 produced significant antinociceptive effects. In mice with LPS-induced hyperalgesia vehicle, indomethacin (10 mg/kg or minocycline (50 mg/kg did not produce significant changes, however, coadministration of minocycline plus indomethacin resulted in antinociceptive activity. LPS-induced RH limb monoarthritis resulted in weight bearing (RH/left hind (LH limb paw pressure ratios and RH/LH print area ratios deficits. Treatment with indomethacin (1 mg/kg or

  10. Non-steroidal anti-inflammatory drug use and risk of endometrial cancer

    DEFF Research Database (Denmark)

    Verdoodt, Freija; Friis, Søren; Dehlendorff, Christian

    2016-01-01

    OBJECTIVE: Non-steroidal anti-inflammatory drug (NSAID) use has been linked to a reduction in the risk of several cancer types. For endometrial cancer, however, results have been inconsistent. To summarize the available evidence on the risk of endometrial cancer associated with use of aspirin...... a random effects model. RESULTS: Six case-control and seven cohort studies were found eligible for our meta-analysis. We observed risk reductions in endometrial cancer associated with regular use of aspirin (case-control: 11%, cohort: 8%) and NA-NSAIDs (case-control: 9%, cohort: 6%), compared to non...

  11. Hemolytic disease of the fetus and newborn caused by anti-D and anti-S alloantibodies: a case report

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    Yousuf Rabeya

    2012-02-01

    Full Text Available Abstract Introduction Hemolytic disease of the fetus and newborn is most commonly caused by anti-D alloantibody. It is usually seen in Rhesus D (RhD-negative mothers that have been previously sensitized. We report here a case of hemolytic disease of the fetus and newborn in a newborn baby caused by anti-D and anti-S alloantibodies, born to a mother who was RhD negative, but with no previous serological evidence of RhD alloimmunization. Case presentation A one-day-old Chinese baby boy was born to a mother who was group A RhD negative. The baby was jaundiced with hyperbilirubinemia, but with no evidence of infection. His blood group was group A RhD positive, his direct Coombs' test result was positive and red cell elution studies demonstrated the presence of anti-D and anti-S alloantibodies. Investigations performed on the maternal blood during the 22 weeks of gestation showed the presence of anti-S antibodies only. Repeat investigations performed post-natally showed the presence of similar antibodies as in the newborn and an anti-D titer of 1:32 (0.25 IU/mL, which was significant. A diagnosis of hemolytic disease of the fetus and newborn secondary to anti-D and anti-S was made. The baby was treated with phototherapy and close monitoring. He was discharged well after five days of phototherapy. Conclusions This case illustrates the possibility of an anamnestic response of allo-anti-D from previous sensitization in a RhD-negative mother, or the development of anti-D in mid-trimester. Thus, it highlights the importance of thorough antenatal ABO, RhD blood grouping and antibody screening, and if necessary, antibody identification and regular monitoring of antibody screening and antibody levels for prevention or early detection of hemolytic disease of the fetus and newborn, especially in cases of mothers with clinically significant red cell alloantibody.

  12. First and second line drug resistance among treatment naïve pulmonary tuberculosis patients in a district under Revised National Tuberculosis Control Programme (RNTCP in New Delhi

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    Vithal Prasad Myneedu

    2015-12-01

    Full Text Available There is limited information of level of drug resistance to first-line and second line anti-tuberculosis agents in treatment naïve pulmonary tuberculosis (PTB patients from the Indian region. Therefore, the present prospective study was conducted to determine the antimicrobial susceptibility to first-line and second line anti-TB drug resistance in such patients. Sputum samples from consecutive treatment naïve PTB cases registered in Lala Ram Sarup (LRS district, under RNTCP containing 12 Directly Observed Treatment Centre’s (DOTS, were enrolled using cluster sampling technology. A total of 453 samples were received from July 2011 to June 2012. All samples were cultured on solid medium followed by drug susceptibility to first and second line anti-tubercular drugs as per RNTCP guidelines. Primary multi-drug resistance (MDR was found to be 18/453; (4.0%. Extensively drug resistance (XDR was found in one strain (0.2%, which was found to be resistant to other antibiotics. Data of drug resistant tuberculosis among treatment naïve TB patients are lacking in India. The presence of XDR-TB and high MDR-TB in small population studied, calls for conducting systematic multi-centric surveillance across the country.

  13. New tools for NTD vaccines: A case study of quality control assays for product development of the human hookworm vaccine Na-APR-1M74.

    Science.gov (United States)

    Pearson, Mark S; Jariwala, Amar R; Abbenante, Giovanni; Plieskatt, Jordan; Wilson, David; Bottazzi, Maria Elena; Hotez, Peter J; Keegan, Brian; Bethony, Jeffrey M; Loukas, Alex

    2015-01-01

    Na-APR-1(M74) is an aspartic protease that is rendered enzymatically inactive by site-directed mutagenesis and is a candidate antigen component in the Human Hookworm Vaccine. The mutant protease exerts vaccine efficacy by inducing antibodies that neutralize the enzymatic activity of wild type enzyme (Na-APR-1wt) in the gut of the hookworm, thereby depriving the worm of its ability to digest its blood meal. Previously, canines immunized with Na-APR-1(M74) and challenged with Ancylostoma caninum were partially protected against hookworm challenge infection, especially from the loss in hemoglobin observed in control canines and canine immunoglobulin (Ig) G raised against Na-APR-1 was shown to inhibit the enzymatic activity of Na-APR-1 wt in vitro, thereby providing proof of concept of Na-APR-1(M74) as a vaccine antigen. The mutated version, Na-APR-1(M74), was then expressed at the cGMP level using a Nicotiana benthamiana expression system (Fraunhofer, CMB, Delaware, MD), formulated with Alhydrogel®, and used to immunize mice in a dose-ranging study to explore the enzyme-neutralizing capacity of the resulting anti- Na-APR-1(M74) IgG. As little as 0.99 μg of recombinant Na-APR-1(M74) could induce anti Na-APR-1(M74) IgG in mice that were capable of inhibiting Na-APR-1w t-mediated digestion of a peptide substrate by 89%. In the absence of enzymatic activity of Na-APR-1(M74) as a surrogate marker of protein functionality, we developed an assay based on the binding of a quenched fluorescence-labeled inhibitor of aspartic proteases, BODIPY-FL pepstatin A (BDP). Binding of BDP in the active site of Na-APR-1 wt was demonstrated by inhibition of enzymatic activity, and competitive binding with unlabelled pepstatin A. BDP also bound to Na-APR-1(M74) which was assessed by fluorescence polarization, but with an ∼ 50-fold reduction in the dissociation constant. Taken together, these assays comprise a "toolbox" that could be useful for the analyses of Na-APR-1(M74) as it

  14. Biofunctionalized anti-corrosive silane coatings for magnesium alloys.

    Science.gov (United States)

    Liu, Xiao; Yue, Zhilian; Romeo, Tony; Weber, Jan; Scheuermann, Torsten; Moulton, Simon; Wallace, Gordon

    2013-11-01

    Biodegradable magnesium alloys are advantageous in various implant applications, as they reduce the risks associated with permanent metallic implants. However, a rapid corrosion rate is usually a hindrance in biomedical applications. Here we report a facile two step procedure to introduce multifunctional, anti-corrosive coatings on Mg alloys, such as AZ31. The first step involves treating the NaOH-activated Mg with bistriethoxysilylethane to immobilize a layer of densely crosslinked silane coating with good corrosion resistance; the second step is to impart amine functionality to the surface by treating the modified Mg with 3-amino-propyltrimethoxysilane. We characterized the two-layer anticorrosive coating of Mg alloy AZ31 by Fourier transform infrared spectroscopy, static contact angle measurement and optical profilometry, potentiodynamic polarization and AC impedance measurements. Furthermore, heparin was covalently conjugated onto the silane-treated AZ31 to render the coating haemocompatible, as demonstrated by reduced platelet adhesion on the heparinized surface. The method reported here is also applicable to the preparation of other types of biofunctional, anti-corrosive coatings and thus of significant interest in biodegradable implant applications. Copyright © 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

  15. Anti-Diabetic, Anti-Oxidant and Anti-Hyperlipidemic Activities of Flavonoids from Corn Silk on STZ-Induced Diabetic Mice.

    Science.gov (United States)

    Zhang, Yan; Wu, Liying; Ma, Zhongsu; Cheng, Jia; Liu, Jingbo

    2015-12-23

    Corn silk is a well-known ingredient frequently used in traditional Chinese herbal medicines. This study was designed to evaluate the anti-diabetic, anti-oxidant and anti-hyperlipidemic activities of crude flavonoids extracted from corn silk (CSFs) on streptozotocin (STZ)-induced diabetic mice. The results revealed that treatment with 300 mg/kg or 500 mg/kg of CSFs significantly reduced the body weight loss, water consumption, and especially the blood glucose (BG) concentration of diabetic mice, which indicated their potential anti-diabetic activities. Serum total superoxide dismutase (SOD) and malondialdehyde (MDA) assays were also performed to evaluate the anti-oxidant effects. Besides, several serum lipid values including total cholesterol (TC), triacylglycerol (TG), low density lipoprotein cholesterol (LDL-C) were reduced and the high density lipoprotein cholesterol level (HDL-C) was increased. The anti-diabetic, anti-oxidant and anti-hyperlipidemic effect of the CSFs suggest a potential therapeutic treatment for diabetic conditions.

  16. Simplified slow anti-coincidence circuit for Compton suppression systems

    International Nuclear Information System (INIS)

    Al-Azmi, Darwish

    2008-01-01

    Slow coincidence circuits for the anti-coincidence measurements have been considered for use in Compton suppression technique. The simplified version of the slow circuit has been found to be fast enough, satisfactory and allows an easy system setup, particularly with the advantage of the automatic threshold setting of the low-level discrimination. A well-type NaI detector as the main detector surrounded by plastic guard detector has been arranged to investigate the performance of the Compton suppression spectrometer using the simplified slow circuit. The system has been tested to observe the improvement in the energy spectra for medium to high-energy gamma-ray photons from terrestrial and environmental samples

  17. Anti-diarrheal constituents of Alpinia oxyphylla.

    Science.gov (United States)

    Zhang, Junqing; Wang, Sheng; Li, Yonghui; Xu, Peng; Chen, Feng; Tan, Yinfeng; Duan, Jinao

    2013-09-01

    Isolation, screening and in vivo assays have been used for evaluating anti-diarrhea bioactive of Alpinia oxyphylla. Preliminary experimental results showed that 95% ethanol extract and 90% ethanol elution significantly extended the onset time of diarrhea and reduced the wet feces proportion, however 50% ethanol election had no effect on diarrhea. Chemical analysis results displayed that Nootkatone, Tectochrysin and yakuchinone A may be bioactive ingredients for curing diarrhea. Duodenum in vitro experiment showed that Tectochrysin 50, 100 μM reduces carbachol-induced contraction, while yakuchinone A and Nootkatone had no effect. Bioinformatic computational method as molecular docking has been complementary to experimentally work to explore the potential mechanism. The study of pathogenesis of diarrhea in humans and animal models suggested that Na(+)/H(+) exchanger3 (NHE3) and aquaporin4 (AQP4) are causative agents of diarrhea. The analysis was done on the basis of scoring and binding ability and the docking analysis showed that Tectochrysin has maximum potential against NHE3 (PDB ID: 2OCS) and AQP4 (PDB ID: 3GD8). Tectochrysin indicated minimum energy score and the highest number of interactions with active site residues. These results suggested that A. oxyphylla might exhibit its anti-diarrhea effect partially by affecting the proteins of NHE3 and AQP4 with its active ingredient Tectochrysin. Copyright © 2013. Published by Elsevier B.V.

  18. Na+-stimulated ATPase of alkaliphilic halotolerant cyanobacterium Aphanothece halophytica translocates Na+ into proteoliposomes via Na+ uniport mechanism

    Directory of Open Access Journals (Sweden)

    Soontharapirakkul Kanteera

    2010-08-01

    Full Text Available Abstract Background When cells are exposed to high salinity conditions, they develop a mechanism to extrude excess Na+ from cells to maintain the cytoplasmic Na+ concentration. Until now, the ATPase involved in Na+ transport in cyanobacteria has not been characterized. Here, the characterization of ATPase and its role in Na+ transport of alkaliphilic halotolerant Aphanothece halophytica were investigated to understand the survival mechanism of A. halophytica under high salinity conditions. Results The purified enzyme catalyzed the hydrolysis of ATP in the presence of Na+ but not K+, Li+ and Ca2+. The apparent Km values for Na+ and ATP were 2.0 and 1.2 mM, respectively. The enzyme is likely the F1F0-ATPase based on the usual subunit pattern and the protection against N,N'-dicyclohexylcarbodiimide inhibition of ATPase activity by Na+ in a pH-dependent manner. Proteoliposomes reconstituted with the purified enzyme could take up Na+ upon the addition of ATP. The apparent Km values for this uptake were 3.3 and 0.5 mM for Na+ and ATP, respectively. The mechanism of Na+ transport mediated by Na+-stimulated ATPase in A. halophytica was revealed. Using acridine orange as a probe, alkalization of the lumen of proteoliposomes reconstituted with Na+-stimulated ATPase was observed upon the addition of ATP with Na+ but not with K+, Li+ and Ca2+. The Na+- and ATP-dependent alkalization of the proteoliposome lumen was stimulated by carbonyl cyanide m - chlorophenylhydrazone (CCCP but was inhibited by a permeant anion nitrate. The proteoliposomes showed both ATPase activity and ATP-dependent Na+ uptake activity. The uptake of Na+ was enhanced by CCCP and nitrate. On the other hand, both CCCP and nitrate were shown to dissipate the preformed electric potential generated by Na+-stimulated ATPase of the proteoliposomes. Conclusion The data demonstrate that Na+-stimulated ATPase from A. halophytica, a likely member of F-type ATPase, functions as an electrogenic Na

  19. anti p and anti Λ production in Si+Au collisions at the AGS

    International Nuclear Information System (INIS)

    Wu, Yuedong

    1996-01-01

    Anti p and anti Λ production in central Si + Au collisions has been measured by E589 at the BNL-AGS. Preliminary m perpendicular spectra are presented for anti p's and anti Λ's. The dn/dy distribution for anti p's is also presented. Based on the anti p and anti Λ measurements, anti Λ/anti p ratios are calculated in the rapidity range of 1.1-1.5

  20. Diagnostic and therapeutic progress of multi-drug resistance with anti-HBV nucleos(t)ide analogues

    Institute of Scientific and Technical Information of China (English)

    Zhuo-Lun Song; Yu-Jun Cui; Wei-Ping Zheng; Da-Hong Teng; Hong Zheng

    2012-01-01

    Nucleos(t)ide analogues (NA) are a breakthrough in the treatment and management of chronic hepatitis B.NA could suppress the replication of hepatitis B virus (HBV) and control the progression of the disease.However,drug resistance caused by their long-term use becomes a practical problem,which influences the long-term outcomes in patients.Liver transplantation is the only choice for patients with HBV-related end-stage liver disease.But,the recurrence of HBV after transplantation often caused by the development of drug resistance leads to unfavorable outcomes for the recipients.Recentiy,the multi-drug resistance (MDR) has become a common issue raised due to the development and clinical application of a variety of NA.This may complicate the antiviral therapy and bring poorly prognostic outcomes.Although clinical evidence has suggested that combination therapy with different NA could effectively reduce the viral load in patients with MDR,the advent of new antiviral agents with high potency and high genetic barrier to resistance brings hope to antiviral therapy.The future of HBV researches relies on how to prevent the MDR occurrence and develop reasonable and effective treatment strategies.This review focuses on the diagnostic and therapeutic progress in MDR caused by the anti-HBV NA and describes some new research progress in this field.

  1. Impacto da terapia anti-retroviral na magnitude da epidemia do HIV/AIDS no Brasil: diversos cenários Impact of antiretroviral therapy on the magnitude of the HIV/AIDS epidemic in Brazil: various scenarios

    Directory of Open Access Journals (Sweden)

    Maria Tereza S. Barbosa

    2003-04-01

    Full Text Available Neste trabalho, utilizaram-se os algoritmos EM e EMS aplicados ao método do Cálculo Retroativo para estimar a magnitude da epidemia do HIV no Brasil. Fazendo-se suposições a respeito do comportamento dos infectados, em relação à utilização da terapia combinada das drogas anti-retrovirais, construíram-se cinco cenários para a epidemia brasileira. O objetivo foi o de ilustrar os impactos que a utilização da terapia combinada das drogas anti-retrovirais possam estar tendo ou possam vir a ter na incubação do vírus e, por conseguinte, nas avaliações da epidemia realizadas a partir dos casos de Aids notificados.We applied the back-calculation method to estimate the magnitude of the HIV epidemic in Brazil, using the EM and EMS algorithms. Under certain assumptions regarding the behavior of infected patients towards combined antiretroviral therapy, we discuss five different scenarios applied to the Brazilian epidemic. Our objective was to illustrate the impact of combined antiretroviral treatment on the incubation period and thus on estimates of the size of the HIV-infected population, based on reported AIDS cases.

  2. Anti-Diabetic, Anti-Oxidant and Anti-Hyperlipidemic Activities of Flavonoids from Corn Silk on STZ-Induced Diabetic Mice

    Directory of Open Access Journals (Sweden)

    Yan Zhang

    2015-12-01

    Full Text Available Corn silk is a well-known ingredient frequently used in traditional Chinese herbal medicines. This study was designed to evaluate the anti-diabetic, anti-oxidant and anti-hyperlipidemic activities of crude flavonoids extracted from corn silk (CSFs on streptozotocin (STZ-induced diabetic mice. The results revealed that treatment with 300 mg/kg or 500 mg/kg of CSFs significantly reduced the body weight loss, water consumption, and especially the blood glucose (BG concentration of diabetic mice, which indicated their potential anti-diabetic activities. Serum total superoxide dismutase (SOD and malondialdehyde (MDA assays were also performed to evaluate the anti-oxidant effects. Besides, several serum lipid values including total cholesterol (TC, triacylglycerol (TG, low density lipoprotein cholesterol (LDL-C were reduced and the high density lipoprotein cholesterol level (HDL-C was increased. The anti-diabetic, anti-oxidant and anti-hyperlipidemic effect of the CSFs suggest a potential therapeutic treatment for diabetic conditions.

  3. Polarization dependence of Na* + Na* associative ionization revisited

    NARCIS (Netherlands)

    Meijer, H.A.J.; Meulen, H.P. v.d.; Morgenstern, R.; Hertel, I.V.; Meyer, E.; Witte, R.

    1986-01-01

    The dependence of the associative ionization process Na 3 2P3/2 + Na 3 2P3/2 → Na2+ + e- on the polarization of the laser light used for Na excitation was independently investigated in Utrecht and Berlin. The purpose of this paper is to clarify discrepancies between two other earlier experimental

  4. SITUASI PATEN OBAT ANTI DIABETES, ANTI HIPERTENSI, ANTI MALARIA DAN ANTI TUBERKULOSIS DI INDONESIA

    Directory of Open Access Journals (Sweden)

    Basundari Sri Utami

    2014-10-01

    Full Text Available AbstrakIndonesia merupakan negara berpenduduk keempat terbanyak setelah Cina, India dan Amerika. Indonesia sedang mengalami transisi epidemiologi, dimana terjadi peningkatan penyakit tidak menular (PTM, sementara penyakit menular (PM seperti malaria, tuberkulosis dan demam dengue prevalensinya masih tinggi. Tingginya morbiditas merupakan lahan yang bagus untuk melaksanakan obat anti PM dan anti PTM yang mendapat paten karena pangsa pasarnya yang sangat luas. Sayangnya potensi pasar yang masih luas ini hanya ditangkap oleh luar negeri. Data dari Direktorat Jendral Hak Kekayaan Intelektual (Ditjen HKI pada tahun 2010 menunjukkan pemohon paten dalam negeri yang mendapatkan persetujuan perlindungan paten (granted hanya 4,6% sedangkan dari luar negeri sebanyak 92,03%. Hal yang sangat ironis bagi Indonesia yang merupakan negara dengan potensi bahan dasar obat alam dan keanekaragaman hayati terbanyak ketiga setelah Brazil dan Cina. Tujuan penelitian ini untuk mengevaluasi situasi paten obat yang terdaftar di Direktorat Paten, Ditjen HKI, Kementerian Hukum dan Hak Asasi Manusia RI dalam 7 tahun terakhir (tahun 2005 sampai 2011 untuk PM (malaria dan tuberkulosis dan PTM (hipertensi dan diabetes. Metode observasional dengan penelusuran dokumen paten dari alamat web instansi terkait. Hasilnya Indonesia hanya mendaftarkan 4,9% dari seluruh paten yang didaftarkan di Dirjen HKI dari tahun 2005 sampai dengan 2011, sebagai berikut untuk obat anti-hipertensi 3,4% dari 89 paten, anti-diabetes hanya 4,8% dari 250 paten, anti malaria 21,1% dari 18 paten anti-tuberkulosis 7,1% dari 14 paten. Sebagian besar paten yang didaftarkan oleh pendaftar Indonesia merupakan paten obat ekstrak herbal atau komposisinya. Kesimpulan dari penelitian ini adalah paten obat untuk PTM dan PM di Indonesia masih didominasi paten luar negeri.Kata Kunci : Situasi paten, obat, Ditjen HKI, IndonesiaAbstractIndonesia is the fourth most populous country after China, India and America. There

  5. Fingermark detection on non-porous and semi-porous surfaces using NaYF4:Er,Yb up-converter particles.

    Science.gov (United States)

    Ma, Rongliang; Bullock, Elicia; Maynard, Philip; Reedy, Brian; Shimmon, Ronald; Lennard, Chris; Roux, Claude; McDonagh, Andrew

    2011-04-15

    This article describes the first use of an anti-Stokes material, or up-converter, for the development of latent fingermarks on a range of non-porous surfaces. Anti-Stokes materials can absorb long-wavelength light and emit light at a shorter wavelength. This property is unusual in both natural and artificial materials and so fingermark detection techniques based on anti-Stokes luminescence are potentially sensitive and selective. Latent fingermarks on luminescent and non-luminescent substrates, including Australian polymer banknotes (a well-known 'difficult' surface), were developed with sodium yttrium tetrafluoride doped with erbium and ytterbium (NaYF(4):Er,Yb) by dry powder, wet powder, and cyanoacrylate staining techniques. This study illustrates the potential of up-converter phosphors for the detection of latent fingermarks. Copyright © 2010 Elsevier Ireland Ltd. All rights reserved.

  6. An influenza A virus (H7N9) anti-neuraminidase monoclonal antibody protects mice from morbidity without interfering with the development of protective immunity to subsequent homologous challenge.

    Science.gov (United States)

    Wilson, Jason R; Belser, Jessica A; DaSilva, Juliana; Guo, Zhu; Sun, Xiangjie; Gansebom, Shane; Bai, Yaohui; Stark, Thomas J; Chang, Jessie; Carney, Paul; Levine, Min Z; Barnes, John; Stevens, James; Maines, Taronna R; Tumpey, Terrence M; York, Ian A

    2017-11-01

    The emergence of A(H7N9) virus strains with resistance to neuraminidase (NA) inhibitors highlights a critical need to discover new countermeasures for treatment of A(H7N9) virus-infected patients. We previously described an anti-NA mAb (3c10-3) that has prophylactic and therapeutic efficacy in mice lethally challenged with A(H7N9) virus when delivered intraperitoneally (i.p.). Here we show that intrananasal (i.n.) administration of 3c10-3 protects 100% of mice from mortality when treated 24h post-challenge and further characterize the protective efficacy of 3c10-3 using a nonlethal A(H7N9) challenge model. Administration of 3c10-3 i.p. 24h prior to challenge resulted in a significant decrease in viral lung titers and deep sequencing analysis indicated that treatment did not consistently select for viral variants in NA. Furthermore, prophylactic administration of 3c10-3 did not inhibit the development of protective immunity to subsequent homologous virus re-challenge. Taken together, 3c10-3 highlights the potential use of anti-NA mAb to mitigate influenza virus infection. Published by Elsevier Inc.

  7. Anti-Ma and anti-Ma2-associated paraneoplastic neurological syndromes.

    Science.gov (United States)

    Ortega Suero, G; Sola-Valls, N; Escudero, D; Saiz, A; Graus, F

    Analyse the clinical profile, associated tumour types, and response to treatment of paraneoplastic neurological syndromes associated with antibodies against Ma proteins. A retrospective study of patients with antibodies against Ma proteins identified in a neuroimmunology laboratory of reference. Of the 32 patients identified, 20 showed reactivity against Ma2 only (anti-Ma2 antibodies), 11 against Ma1 and Ma2 (anti-Ma antibodies), and 1 with reactivity against Ma1 only (anti-Ma1 antibodies). The most common clinical presentations were limbic encephalopathy, diencephalic dysfunction, or brainstem encephalopathy, frequently appearing as a combination of these features. Three patients had isolated cerebellar dysfunction with anti-Ma antibodies, and 2 exhibited peripheral nervous system syndrome with anti-Ma2 antibodies. Testicular tumours were the most common neoplasms (40%) in the anti-Ma2 cases. In the group associated with anti-Ma1 antibodies, the most common were lung tumours (36%), followed by testicular tumours. All idiopathic cases were reactive to Ma2. The clinical outcome was significantly better in the anti-Ma2 group. The patient with anti-Ma1 presented with limbic encephalitis and brainstem dysfunction associated with lymphoepithelioma of the bladder. Specifically determining the different reactivities of anti-Ma protein antibodies in order to differentiate between Ma1 and Ma2 antibodies is important because anti-Ma2-associated paraneoplastic syndromes have a better outcome. Lastly, this study is the first to confirm that there may be cases that react exclusively to antibodies against Ma1. Copyright © 2016 Sociedad Española de Neurología. Publicado por Elsevier España, S.L.U. All rights reserved.

  8. Avaliação da função endotelial em pacientes com esclerose sistêmica limitada por meio do eco Doppler da artéria braquial Evaluation of endothelial function in patients with limited systemic sclerosis by use of brachial artery Doppler ultrasound

    Directory of Open Access Journals (Sweden)

    Tatiana Melo Fernandes

    2012-08-01

    Full Text Available OBJETIVO: O objetivo deste estudo foi comparar a resposta dilatadora dependente e independente do endotélio em pacientes portadores de esclerose sistêmica limitada (ESL com aquela de indivíduos sadios de mesmo gênero, idade e cor. MÉTODOS: Vinte mulheres adultas, não obesas, não tabagistas, não diabéticas, não dislipidêmicas, não hipertensas, que preencheram os critérios para esclerose sistêmica (ES segundo o American College of Rheumatology, foram submetidas ao exame de Doppler de artéria braquial do membro superior direito. Foi analisada a resposta dilatadora, dependente do endotélio, após isquemia induzida com esfigmomanômetro por cinco minutos no braço direito, e a resposta dilatadora, independente do endotélio, após administração de 300 mcg de nitroglicerina (NTG sublingual. Esses resultados foram comparados com a resposta obtida em indivíduos sadios. RESULTADOS: O diâmetro longitudinal da artéria braquial (DAB foi significativamente menor na fase basal 1 nos pacientes com ESL (3,57 ± 0,52 mm e 3,93 ± 0,39 mm, respectivamente no grupo paciente (P e grupo-controle (C, P = 0,005. Não foi encontrada diferença estatisticamente significativa entre a velocidade das hemácias (VH após isquemia/hiperemia reativa (HR e após NTG (110,2 ± 43,86 cm/s vs. 102,0 ± 25,89 cm/s e 63,80 ± 17,69 cm/s vs. 65,4 ± 12,90 cm/s nos grupos P e C, após HR e NTG, respectivamente. Também não foi encontrada diferença significativa entre o DAB após HR e após NTG (3,77 ± 0,59 mm vs. 4,14 ± 0,49 mm e 4,44 ± 0,64 mm vs. 4,70 ± 0,58 mm nos grupos P e C, após HR e NTG, respectivamente. CONCLUSÃO: Embora o grupo de pacientes com ESL tenha apresentado menor DAB basal, a resposta dilatadora dependente e independente do endotélio se manteve preservada em ambos os grupos.OBJECTIVES: The aim of this study was to compare the brachial artery endothelium-dependent and endothelium-independent dilating responses in patients with limited

  9. [Prokaryotic expression of Nanog gene and preparation of anti-Nanog antibody].

    Science.gov (United States)

    Li, Jun; Wang, Xiao-min; Dou, Zhong-ying; Li, Yong

    2012-07-01

    To express Nanog fusion protein in Escherichia coli ( E.coli), and to prepare rabbit anti-mouse polyclonal antibodies to the Nanog fusion protein. Mouse Nanog gene was amplified from the pNA992 recombinant plasmid and inserted into pET-32a vector to construct a recombinant expression vector pET-32a-Nanog. The recombinant vector was transfected into E.coli BL21 and induced by IPTG to express in them. The acquired Nanog fusion protein was purified with HisTrap affinity column and injected as an antigen into rabbits for preparing polyclonal antibodies. At last, the titer and specificity of the polyclonal antibodies were analyzed with indirect ELISA, Western blotting and immunocytochemical staining, respectively. The recombinant expression vector pET-32a-Nanog was successfully prepared, transfected and induced to obtain the high expression of the Nanog fusion protein in a form of inclusion bodies in E.coli. After purification, its purity was up to 97%. The titer of anti-Nanog antibodies was 1:32 000 in the immunized rabbit serum, and exhibited a high specificity to Nanog protein. The rabbit anti-mouse polyclonal antibodies have been prepared successfully with a high titer and specificity to the Nanog fusion protein.

  10. Aspectos epidemiológicos da infecção por leptospira spp em caninos urbanos de Araguaína, Tocantins, Brasil

    OpenAIRE

    GALVÃO, Samara Rocha

    2009-01-01

    Este estudo teve como objetivo investigar a prevalência de anticorpos anti- Leptospira spp, identificar os sorovares mais prevalentes, bem como avaliar possíveis fatores associados à prevalência sorológica antileptospírica em cães urbanos de Araguaína, Tocantins. Foi realizado um estudo transversal, abrangendo a população canina domiciliada na zona urbana do município. Analisaram-se 275 amostras, tendo sido realizada colheita domiciliar dos soros, em unidades sorteadas, após o consentiment...

  11. Investigation of anti-wear performance of automobile lubricants using thin layer activation analysis technique

    Energy Technology Data Exchange (ETDEWEB)

    Biswal, Jayashree [Isotope and Radiation Application Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085 (India); Thakre, G.D. [Tribology and Combustion Division, Indian Institute of Petroleum, Dehradun 248005, Uttarakhand (India); Pant, H.J., E-mail: hjpant@barc.gov.in [Isotope and Radiation Application Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085 (India); Samantray, J.S. [Isotope and Radiation Application Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085 (India); Arya, P.K. [Tribology and Combustion Division, Indian Institute of Petroleum, Dehradun 248005, Uttarakhand (India); Sharma, S.C.; Gupta, A.K. [Nuclear Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085 (India)

    2017-05-15

    An investigation was carried out to examine the anti-wear behavior of automobile lubricants using thin layer activation analysis technique. For this study disc gears made of EN 31 steel were labeled with a small amount of radioactivity by irradiating with 13 MeV proton beam from a particle accelerator. Experiments on wear rate measurement of the gear were carried out by mounting the irradiated disc gear on a twin-disc tribometer under lubricated condition. The activity loss was monitored by using a NaI(Tl) scintillation detector integrated with a multichannel analyzer. The relative remnant activity was correlated with thickness loss by generating a calibration curve. The wear measurements were carried out for four different types of lubricants, named as, L1, L2, L3 and L4. At lower load L1 and L4 were found to exhibit better anti-wear properties than L2 and L3, whereas, L4 exhibited the best anti-wear performance behavior than other three lubricants at all the loads and speeds investigated.

  12. Mioscleroses Myosclerosis

    Directory of Open Access Journals (Sweden)

    José Antonio Levy

    1968-09-01

    Full Text Available São apresentados os casos de 7 pacientes miopatas com retrações fibrotendinosas precoces. O autor é de opinião que este tipo de afecção não constitui uma unidade nosológica bem definida e compara suas observações com outras referidas na literatura médica citando ,entre outras, a miopatia esclerosa limitante, a esclerose muscular generalizada, as mioscleroses heredo-familiares, as miosites fibrosas, a miosclerose senil, a mesenquimose displásica e a atrogripose.The cases of 7 myopathic patients with precocious fibrotendinous retractions p.re reported. The author suggests that this type of affection does not constitute a well defined nosological entity in itself. He discusses the bibliographic references on the subject, considering limiting sclerotic myopathies, generalized muscular sclerosis, heredofamiliar myosclerosis, fibrous myositis, senile myosclerosis, dysplastic mesenchymosis and arthrogryposis.

  13. Characterization of a Hepatitis B virus strain in southwestern Paraná, Brazil, presenting mutations previously associated with anti-HBs Resistance Caracterização de uma cepa de hepatite por vírus B no sudoeste do Paraná, Brasil, apresentando mutações previamente associadas à resistência anti-HBs

    Directory of Open Access Journals (Sweden)

    Dennis Armando Bertolini

    2010-02-01

    Full Text Available The present study investigated if hepatitis B virus (HBV mutants circulate in the southwestern region of the State of Paraná, Brazil, by analyzing samples from children who received immunoprophylaxis but were born to HBV carrier mothers. Samples from 25 children were screened for HBV serum markers and for HBV DNA by PCR. Only one sample was positive for HBsAg, anti-HBs and HBV DNA, although the child had been vaccinated. Analysis of the S gene sequence of this sample showed the presence of a proline at position 105, a serine at position 114, three threonines at positions 115, 116 and 140, and a glutamine at position 129. The presence of these amino acids, except for serine at position 114, has been related to monoclonal or polyclonal therapy with anti-HBs after liver transplantation, whereas the presence of threonine at position 116 has been described in immunized children from Singapore. This finding demonstrates the possible circulation of HBV strains resistant to hepatitis B immunoprophylaxis in southwestern Paraná, Brazil. The genotype of the sample was identified as genotype D, which is frequently found in the region studied. Since 36% of the children had received incomplete or no immunoprophylaxis, more extensive follow-up of children born to HBsAg-positive mothers is needed.O presente estudo investigou se mutantes do vírus da hepatite B (HBV circulam na região Sudoeste do Estado do Paraná, Brasil, analisando amostras de crianças que receberam a imunoprofilaxia por terem nascido de mães portadoras do HBV. Amostras de 25 crianças foram analisadas para os marcadores sorológicos do HBV e para o DNA-HBV por PCR. Somente uma amostra foi positiva para AgHBs, anti-HBs e DNA-HBV, apesar da criança ter sido vacinada. Análises da seqüência do gene S desta amostra mostrou a presença de uma prolina na posição 105, uma serina na posição 114, três treoninas nas posições 115, 116 e 140, e uma glutamina na posição 129. A presen

  14. Exotic tetraquark states with the qq anti Q anti Q configuration

    Energy Technology Data Exchange (ETDEWEB)

    Luo, Si-Qiang; Chen, Kan; Liu, Xiang [Lanzhou University, School of Physical Science and Technology, Lanzhou (China); Lanzhou University and Institute of Modern Physics, CAS, Research Center for Hadron and CSR Physics, Lanzhou (China); Liu, Yan-Rui [Shandong University, School of Physics and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Jinan (China); Zhu, Shi-Lin [Peking University, School of Physics and State Key Laboratory of Nuclear Physics and Technology, Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China); Peking University, Center for High Energy Physics, Beijing (China)

    2017-10-15

    In this work, we study systematically the mass splittings of the qq anti Q anti Q (q = u, d, s and Q = c, b) tetraquark states with the color-magnetic interaction by considering color mixing effects and estimate roughly their masses. We find that the color mixing effect is relatively important for the J{sup P} = 0{sup +} states and possible stable tetraquarks exist in the nn anti Q anti Q (n = u, d) and ns anti Q anti Q systems either with J = 0 or with J = 1. Possible decay patterns of the tetraquarks are briefly discussed. (orig.)

  15. [Anti-inflammatory, analgesic and anti-pyretic activities of a non-steroidal anti-inflammatory drug, etofenamate, in experimental animals].

    Science.gov (United States)

    Nakamura, H; Motoyoshi, S; Imazu, C; Ishii, K; Yokoyama, Y; Seto, Y; Kadokawa, T; Shimizu, M

    1982-08-01

    Anti-inflammatory, analgesic, and anti-pyretic activities of orally administered etofenamate, the diethylene glycol ester of flufenamic acid, were investigated in experimental animals. Against acetic acid-induced vascular permeability in mice and ultra-violet light-induced erythema in guinea pigs, etofenamate produced a dose related inhibition at doses of 40--320 mg/kg and 5--20 mg/kg, respectively. In rats, felt-pellet-induced granuloma formation and adjuvant-induced arthritis were significantly inhibited by repeated administration of etofenamate at doses of 20 mg/kg/day for 5 days and 40 mg/kg/day for 21 days, respectively. Etofenamate showed an inhibitory activity on the squeak response caused by flexing and extending the silver nitrate-induced arthritic joint in rats; and it produced a dose related anti-writhing activity at doses of 50--300 mg/kg and 10--80 mg/kg in mice and rats, respectively, in the acetic acid-induced writhing test. Etofenamate showed a significant anti-pyretic activity at doses of 0.2 mg/kg or more. These potencies of etofenamate were 0.5 to 1.6 times those of flufenamic acid. In particular, the anti-erythema, anti-arthritis, and anti-pyretic activities of etofenamate were approximately equivalent to or superior to those of flufenamic acid. From these results, it was suggested that etofenamate given orally, like other non-steroidal anti-inflammatory drugs, showed anti-inflammatory, analgesic, and anti-pyretic activities in experimental animals.

  16. Pseudo-ternary phase diagram in the Na2O-Na2O2-NaOH system

    International Nuclear Information System (INIS)

    Saito, Jun-ichi; Tendo, Masayuki; Aoto, Kazumi

    1997-10-01

    Generally, the phase diagrams are always used to understand the present state of compounds at certain temperature. In order to understand the corrosion behavior of structural material for FBR by main sodium compounds (Na 2 O, Na 2 O 2 and NaOH), it is very important to comprehend the phase diagrams of their compounds. However, only Na 2 O-NaOH pseudo-binary phase diagram had been investigated previously in this system. There is no study of other pseudo-binary or ternary phase diagrams in the Na 2 O-Na 2 O 2 -NaOH system. In this study, in order to clarify the present states of their compounds at certain temperatures, the pseudo-binary and ternary phase diagrams in the Na 2 O-Na 2 O 2 -NaOH system were prepared. A series of thermal analyses with binary and ternary component system has been carried out using the differential scanning calorimetry (DSC). The liquidus temperature and ternary eutectic temperatures were confirmed by these measurements. The beneficial indications for constructing phase diagrams were obtained from these experiments. On the basis of these results, the interaction parameters between compounds which were utilized for the Thermo-Calc calculation were optimized. Thermo-Calc is one of thermodynamic calculation software. Consequently the accurate pseudo-binary and ternary phase diagrams were indicated using the optimized parameters. (author)

  17. [Antioxidant and anti-inflammatory activities of Moroccan Erica arborea L].

    Science.gov (United States)

    Amezouar, F; Badri, W; Hsaine, M; Bourhim, N; Fougrach, H

    2013-12-01

    The present study was carried out to evaluate the antioxidant and anti-inflammatory capacity, and acute toxicity of Moroccan Erica arborea leaves. Antioxidant capacity was assessed by diphenyle-picryl-hydrazyl (DPPH), phosphomolybdate (PPM) and ferric reducing antioxidant power (FRAP) tests and anti-inflammatory capacity was evaluated by hind paw oedema model using carrageenan-induced inflammation in rat. The acute toxicity was evaluated using mice. Acute toxicity of ethanolic extract of E. arborea showed no sign of toxicity at dose of 5 g/kg B.W. Our extracts have important antioxidant properties. The efficient concentration of the ethanolic extract (10.22 μg/ml) required for decreasing initial DPPH concentration by 50% was comparable to that of standard solution butyl-hydroxy-toluene (BHT) (8.87 μg/ml). The administration of ethanolic extract at doses of 200 and 400mg/kg B.W. was able to prevent plantar oedema and exhibited a significant inhibition against carrageenan-induced inflammation when compared to the control group (NaCl 0.9%) but comparable to those of diclofenac (reference drug). Our results show that the leaves of E. arborea may contain some bioactive compounds which are responsible for the antioxidant and anti-inflammatory activities observed here. Our finding may indicate the possibility of using the extracts of this plant to prevent the antioxidant and inflammatory processes. Copyright © 2013 Elsevier Masson SAS. All rights reserved.

  18. C anti c q anti q states

    Energy Technology Data Exchange (ETDEWEB)

    Chao, K T [Oxford Univ. (UK). Dept. of Theoretical Physics; Science Research Council, Chilton (UK). Rutherford and Appleton Labs.)

    1980-07-01

    Taking account of the colour magnetic and electric forces, we discuss the spectroscopy of various types of c anti c q anti q states. Their decay, hadronic production, production in e/sup +/e/sup -/ annihilation as well as photoproduction are also studied.

  19. Coplanarity of two-proton emissions in 400 MeV/nucleon Ne + NaF, Pb reactions

    International Nuclear Information System (INIS)

    Tanihata, Isao.

    1984-10-01

    Two-proton coincidence spectra have been measured in a wide kinematical range for 20 Ne + NaF and 20 Ne + Pb collisions at 400 MeV/nucleon. Coplanar-type correlations show different feature between Ne + NaF and Ne + Pb target reactions. A strong in-plane correlation, which correspond to quasi-elastic scatterings (QES) of nucleons, was observed in wide angular range (15 to 90 0 ) in NaF target collisions. Angular distributions of QES were reproduced reasonably well by a single nucleon-nucleon scattering model. Enhancement of the QES at momentum transfer around t = 2 - 3m/sub π/, which is predicted as an indication of pionic instability, was not observed. In Ne + Pb collisions, an azimuthally asymmetric emission of particles with respect to the beam axis were implied by the anti-coplanar correlation. A new type of coplanar correlation between the emission angle and the momentum suggests a back-to-back emission of projectile and target nucleons. 8 references, 8 figures

  20. Poly herbal formulation with anti-elastase and anti-oxidant properties for skin anti-aging.

    Science.gov (United States)

    Kalyana Sundaram, Induja; Sarangi, Deepika Deeptirekha; Sundararajan, Vignesh; George, Shinomol; Sheik Mohideen, Sahabudeen

    2018-01-29

    Skin forms an important part of human innate immune system. Wrinkles, thinning and roughening of skin are some of the symptoms that affect the skin as it ages. Reactive oxygen species induced oxidative stress plays a major role in skin aging by modulating the elastase enzyme level in the skin. Extrinsic factors that affect skin aging such as UV radiation can also cause malignant melanoma. Here we selected four medicinal plant materials, namely, leaves of Nyctanthes arbor-tristis, unripe and ripe Aegle marmelos fruit pulp and the terminal meristem of Musa paradisiaca flower and investigated their anti-aging properties and cytotoxicity in vitro individually as well as in a poly herbal formulation containing the four plant extracts in different ratios. The phytochemical contents of the plant extracts were investigated for radical scavenging activity and total reducing power. Based upon its anti-oxidant properties, a poly herbal formulation containing leaves of Nyctanthes arbor-tristis, unripe and ripe fruit pulp of Aegle marmelos, and the terminal meristem of Musa paradisiaca flower in the ratio 6:2:1:1 (Poly Herbal Formulation 1) and 1:1:1:1 (Poly Herbal Formulation 2), respectively were formulated. It has been observed that the Poly Herbal Formulation 1 was more potent than Poly Herbal Formulation 2 due to better anti-oxidant and anti-elastase activities in NIH3T3 fibroblast cells. In addition Poly Herbal formulation 1 also had better anti-cancer activity in human malignant melanoma cells. Based on these results these beneficial plant extracts were identified for its potential application as an anti-aging agent in skin creams as well as an anti-proliferation compound against cancer cells.

  1. Study of phytochemical, anti-microbial, anti-oxidant, and anti-cancer properties of Allium wallichii.

    Science.gov (United States)

    Bhandari, Jaya; Muhammad, BushraTaj; Thapa, Pratiksha; Shrestha, Bhupal Govinda

    2017-02-08

    There is growing interest in the use of plants for the treatment and prevention of cancer. Medicinal plants are currently being evaluated as source of promising anticancer agents. In this paper, we have investigated the anticancer potential of plant Allium wallichii, a plant native to Nepal and growing at elevations of 2300-4800 m. This is the first study of its kind for the plant mentioned. The dried plant was extracted in aqueous ethanol. Phytochemical screening, anti-microbial assay, anti-oxidant assay, cytotoxicity assay and the flow-cytometric analysis were done for analyzing different phytochemicals present, anti-microbial activity, anti-oxidant activity and anti-cancer properties of Allium wallichii. We observed the presence of steroids, terpenoids, flavonoids, reducing sugars and glycosides in the plant extract and the plant showed moderate anti-microbial and anti-oxidant activity. The IC 50 values of Allium wallichii in different cancer cell lines are 69.69 μg/ml for Prostate cancer (PC3) cell line, 55.29 μg/ml for Breast Cancer (MCF-7) cell line and 46.51 μg/ml for cervical cancer (HeLa) cell line as compared to Doxorubicin (0.85 μg/ml). The cell viability assay using FACS showed that the IC 50 value of Allium wallichii for Burkitt's lymphoma (B-Lymphoma) cell line was 3.817 ± 1.99 mg/ml. Allium wallichii can be an important candidate to be used as an anticancer agent. Separation of pure compounds with bioassay guided extraction, spectrometric analysis and subsequent cytotoxicity assay of the pure bioactive compounds from Allium wallichii is highly recommended as the crude extract itself showed promising cytotoxicity.

  2. Anti-neuronal anti-bodies in patients with early psychosis.

    Science.gov (United States)

    Mantere, O; Saarela, M; Kieseppä, T; Raij, T; Mäntylä, T; Lindgren, M; Rikandi, E; Stoecker, W; Teegen, B; Suvisaari, J

    2018-02-01

    It may be challenging to distinguish autoimmune encephalitis associated with anti-neuronal autoantibodies from primary psychiatric disorders. Here, serum was drawn from patients with a first-episode psychosis (n=70) or a clinical high-risk for psychosis (n=6) and controls (n=34). We investigated the serum prevalence of 24 anti-neuronal autoantibodies: IgG antibodies for anti-N-methyl-d-aspartate-type glutamate receptor (anti-NMDAR), glutamate and γ-aminobutyric acid alpha and beta receptors (GABA-a, GABA-b), alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPA), glycine receptor (GlyR), metabotropic glutamate receptor 1 and 5 (mGluR1, mGluR5), anti-Tr/Delta/notch-like epidermal growth factor-related receptor (DNER), contactin-associated protein-like 2 (CASPR2), myelin oligodendrocyte glycoprotein (MOG), glutamic acid decarboxylase-65 (GAD65), collapsin response mediator protein 5/crossveinless-2 (CV2), aquaporin-4 (AQP4), anti-dipeptidyl-peptidase-like protein-6 (DPPX), type 1 anti-neuronal nuclear antibody (ANNA-1, Hu), Ri, Yo, IgLON5, Ma2, zinc finger protein 4 (ZIC4), Rho GTPase-activating protein 26, amphiphysin, and recoverin, as well as IgA and IgM for dopamine-2-receptor (DRD2). Anti-NMDA IgG antibodies were positive with serum titer 1:320 in one patient with a clinical high risk for psychosis. He did not receive a diagnosis of encephalitis after comprehensive neurological evaluation. All other antineuronal autoantibodies were negative and there were no additional findings with immunohistochemistry of brain issues. Copyright © 2017 Elsevier B.V. All rights reserved.

  3. Frequency of class I anti-HLA alloantibodies in patients infected by HIV-1

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    Elza Regina Manzolli Leite

    2010-02-01

    Full Text Available The aim of this study was to evaluate the presence of class I anti-HLA alloantibodies in patients infected by HIV-1 and relate it with the different clinical courses of the disease. Blood samples were collected in EDTA tubes from 145 individuals. HIV-1 infection was confirmed by ELISA test. The presence of class I anti-HLA alloantibodies and HLA allele's were determined. Clinical evolution was set as fast (3 years. Class I anti-HLA alloantibodies presence was lower in healthy individuals than in those infected by HIV-1 (4.2% against 32.4%. However, an equal distribution of these alloantibodies was found among the individuals infected, independent on the clinical evolution. Thus, class I anti-HLA alloantibodies was not a determinant factor for patient worsening.O objetivo deste estudo foi avaliar a presença de aloanticorpos anti-HLA classe I em pacientes infectados pelo HIV-1 e relacioná-la aos diferentes cursos clínicos da doença. Amostras de sangue de 145 indivíduos HIV positivo foram coletadas em tubos com EDTA. A infecção pelo HIV-1 foi confirmada por teste ELISA e a presença de aloanticorpos anti-HLA classe I determinada em seguida. A evolução clínica foi definida como rápida (3 anos. A presença de aloanticorpos anti-HLA classe I foi menor em indivíduos saudáveis em relação aos infectados pelo HIV-1 (4,2% contra 32,4%. Porém, a distribuição destes aloanticorpos entre os indivíduos infectados foi igual, independente da evolução clínica. Deste modo, a presença de aloanticorpos anti-HLA classe I não é um fator determinante na piora clínica do paciente.

  4. Camellia sinensis L. Extract and Its Potential Beneficial Effects in Antioxidant, Anti-Inflammatory, Anti-Hepatotoxic, and Anti-Tyrosinase Activities

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    Surached Thitimuta

    2017-03-01

    Full Text Available The aims of this study were to investigate the potential benefits of antioxidant, anti-inflammatory, anti-hepatotoxic, and anti-tyrosinase activities of a methanolic extract of fresh tea leaves (FTE (Camellia sinensis L.. The antioxidant capacity was investigated using three different methods at different temperatures. The anti-inflammatory activity was studied in vitro by the inhibition of 5-lipoxygenase assay. The anti-hepatotoxic effect was investigated in CCl4-induced liver injury in rats. The anti-tyrosinase activities of the FTE and its principal phenolic compounds were investigated in l-3,4-dihydroxyphenylalanine (l-DOPA oxidation by a mushroom tyrosinase. A molecular docking study was conducted to determine how the FTE’s principal catechins interact with the tyrosinase. The FTE exhibited the best shelf life at low temperatures and demonstrated concentration-dependent antioxidant, anti-inflammatory, anti-hepatotoxic, and anti-tyrosinase effects compared to positive references. Treatment of rats with the FTE at 2000 mg/kg/day for 28 consecutive days reversed CCl4-induced oxidative damage in hepatic tissues by lowering the levels of alanine aminotransferase by 69% and malondialdehyde by 90%. Our findings suggest that the FTE has the capacity to scavenge free radicals and can protect against oxidative stress induced by CCl4 intoxication. The docking results were consistent with our in vitro data, indicating the anti-tyrosinase potency of the principal catechins.

  5. Camellia sinensis L. Extract and Its Potential Beneficial Effects in Antioxidant, Anti-Inflammatory, Anti-Hepatotoxic, and Anti-Tyrosinase Activities.

    Science.gov (United States)

    Thitimuta, Surached; Pithayanukul, Pimolpan; Nithitanakool, Saruth; Bavovada, Rapepol; Leanpolchareanchai, Jiraporn; Saparpakorn, Patchreenart

    2017-03-04

    The aims of this study were to investigate the potential benefits of antioxidant, anti-inflammatory, anti-hepatotoxic, and anti-tyrosinase activities of a methanolic extract of fresh tea leaves (FTE) ( Camellia sinensis L.). The antioxidant capacity was investigated using three different methods at different temperatures. The anti-inflammatory activity was studied in vitro by the inhibition of 5-lipoxygenase assay. The anti-hepatotoxic effect was investigated in CCl₄-induced liver injury in rats. The anti-tyrosinase activities of the FTE and its principal phenolic compounds were investigated in l-3,4-dihydroxyphenylalanine (l-DOPA) oxidation by a mushroom tyrosinase. A molecular docking study was conducted to determine how the FTE's principal catechins interact with the tyrosinase. The FTE exhibited the best shelf life at low temperatures and demonstrated concentration-dependent antioxidant, anti-inflammatory, anti-hepatotoxic, and anti-tyrosinase effects compared to positive references. Treatment of rats with the FTE at 2000 mg/kg/day for 28 consecutive days reversed CCl₄-induced oxidative damage in hepatic tissues by lowering the levels of alanine aminotransferase by 69% and malondialdehyde by 90%. Our findings suggest that the FTE has the capacity to scavenge free radicals and can protect against oxidative stress induced by CCl₄ intoxication. The docking results were consistent with our in vitro data, indicating the anti-tyrosinase potency of the principal catechins.

  6. Extracellular Na+ levels regulate formation and activity of the NaX/alpha1-Na+/K+-ATPase complex in neuronal cells.

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    Emmanuelle eBerret

    2014-12-01

    Full Text Available MnPO neurons play a critical role in hydromineral homeostasis regulation by acting as sensors of extracellular sodium concentration ([Na+]out. The mechanism underlying Na+-sensing involves Na+-flow through the NaX channel, directly regulated by the Na+/K+-ATPase α1-isoform which controls Na+-influx by modulating channel permeability. Together, these two partners form a complex involved in the regulation of intracellular sodium ([Na+]in. Here we aim to determine whether environmental changes in Na+ could actively modulate the NaX/Na+/K+-ATPase complex activity.We investigated the complex activity using patch-clamp recordings from rat MnPO neurons and Neuro2a cells. When the rats were fed with a high-salt-diet, or the [Na+] in the culture medium was increased, the activity of the complex was up-regulated. In contrast, drop in environmental [Na+] decreased the activity of the complex. Interestingly under hypernatremic condition, the colocalization rate and protein level of both partners were up-regulated. Under hyponatremic condition, only NaX protein expression was increased and the level of NaX/Na+/K+-ATPase remained unaltered. This unbalance between NaX and Na+/K+-ATPase pump proportion would induce a bigger portion of Na+/K+-ATPase-control-free NaX channel. Thus we suggest that hypernatremic environment increases NaX/Na+/K+-ATPase α1-isoform activity by increasing the number of both partners and their colocalization rate, whereas hyponatremic environment down-regulates complex activity via a decrease in the relative number of NaX channels controlled by the pump.

  7. Activation of human naïve Th cells increases surface expression of GD3 and induces neoexpression of GD2 that colocalize with TCR clusters.

    Science.gov (United States)

    Villanueva-Cabello, Tania M; Mollicone, Rosella; Cruz-Muñoz, Mario E; López-Guerrero, Delia V; Martínez-Duncker, Iván

    2015-12-01

    CD4+ T helper lymphocytes (Th) orchestrate the immune response after their activation by antigen-presenting cells. Activation of naïve Th cells is reported to generate the reduction in surface epitopes of sialic acid (Sia) in α2,3 and α2,6 linkages. In this work, we report that in spite of this glycophenotype, anti-CD3/anti-CD28-activated purified human naïve Th cells show a significant increase in surface Sia, as assessed by metabolic labeling, compared with resting naïve Th cells, suggesting an increased flux of Sia toward Siaα2,8 glycoconjugates. To understand this increase as a result of ganglioside up-regulation, we observed that very early after activation, human naïve Th cells show an increased expression in surface GD3 and neoexpression of surface GD2 gangliosides, the latter clustering with the T cell receptor (TCR). Also, we report that in contrast to GM2/GD2 synthase null mice, lentiviral vector-mediated silencing of the GM2/GD2 synthase in activated human naïve Th cells reduced efficient TCR clustering and downstream signaling, as assessed by proliferation assays and IL-2 and IL-2R expression, pointing to an important role of this enzyme in activation of human naive Th cells. © The Author 2015. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  8. A Study of the Distribution of Sodium Cations in the Zeolites NaX, NaY and ZnNaY Using Carbon Monoxide Adsorption and 23Na NMR Techniques

    Science.gov (United States)

    Seidel, A.; Boddenberg, B.

    1995-03-01

    The zeolites NaX, NaY, Zn(55)NaY, and Zn(74)NaY were investigated by means of carbon monoxide adsorption and with static and magic angle spinning (MAS) 23Na NMR spectroscopy. The Na+ distribution between the sodalite (ß)- and supercages of the fully hydrated zeolites NaX and NaY were found to agree with XRD results. In the hydrated zinc-exchanged zeolites the Na+ ions almost exclusively populate the ß-cages. The adsorption isotherms of CO in the dehydrated zeolites were analyzed quantitatively to yield the concentrations of Na+ residing in the supercages. The measured static and MAS 23Na NMR spectra were analyzed by comparing their widths and shapes with simulated central transition patterns and yield, inter alia, the concentrations of Na+ associated with the spectrum components. Arguments are put forward that 23Na NMR of dehydrated zeolites is well suited to distinguish Na+ cations in highly symmetric environments and mobile Na+ species from others located on general positions, but further resolution is hardly feasible.

  9. Anti-Bubbles

    Science.gov (United States)

    Tufaile, Alberto; Sartorelli, José Carlos

    2003-08-01

    An anti-bubble is a striking kind of bubble in liquid that seemingly does not comply the buoyancy, and after few minutes it disappears suddenly inside the liquid. Different from a simple air bubble that rises directly to the liquid surface, an anti-bubble wanders around in the fluid due to its slightly lesser density than the surrounding liquid. In spite of this odd behavior, an anti-bubble can be understood as the opposite of a conventional soap bubble in air, which is a shell of liquid surrounding air, and an anti-bubble is a shell of air surrounding a drop of the liquid inside the liquid. Two-phase flow has been a subject of interest due to its relevance to process equipment for contacting gases and liquids applied in industry. A chain of bubbles rising in a liquid formed from a nozzle is a two-phase flow, and there are certain conditions in which spherical air shells, called anti-bubbles, are produced. The purpose of this work is mainly to note the existence of anti-bubbling regime as a sequel of a bubbling system. We initially have presented the experimental apparatus. After this we have described the evolution of the bubbling regimes, and emulated the effect of bubbling coalescence with simple maps. Then is shown the inverted dripping as a consequence of the bubble coalescence, and finally the conditions for anti-bubble formation.

  10. HCO3(-)-coupled Na+ influx is a major determinant of Na+ turnover and Na+/K+ pump activity in rat hepatocytes

    International Nuclear Information System (INIS)

    Fitz, J.G.; Lidofsky, S.D.; Weisiger, R.A.; Xie, M.H.; Cochran, M.; Grotmol, T.; Scharschmidt, B.F.

    1991-01-01

    Recent studies in hepatocytes indicate that Na(+)-coupled HCO3- transport contributes importantly to regulation of intracellular pH and membrane HCO3- transport. However, the direction of net coupled Na+ and HCO3- movement and the effect of HCO3- on Na+ turnover and Na+/K+ pump activity are not known. In these studies, the effect of HCO3- on Na+ influx and turnover were measured in primary rat hepatocyte cultures with 22Na+, and [Na+]i was measured in single hepatocytes using the Na(+)-sensitive fluorochrome SBFI. Na+/K+ pump activity was measured in intact perfused rat liver and hepatocyte monolayers as Na(+)-dependent or ouabain-suppressible 86Rb uptake, and was measured in single hepatocytes as the effect of transient pump inhibition by removal of extracellular K+ on membrane potential difference (PD) and [Na+]i. In hepatocyte monolayers, HCO3- increased 22Na+ entry and turnover rates by 50-65%, without measurably altering 22Na+ pool size or cell volume, and HCO3- also increased Na+/K+ pump activity by 70%. In single cells, exposure to HCO3- produced an abrupt and sustained rise in [Na+]i from approximately 8 to 12 mM. Na+/K+ pump activity assessed in single cells by PD excursions during transient K+ removal increased congruent to 2.5-fold in the presence of HCO3-, and the rise in [Na+]i produced by inhibition of the Na+/K+ pump was similarly increased congruent to 2.5-fold in the presence of HCO3-. In intact perfused rat liver, HCO3- increased both Na+/K+ pump activity and O2 consumption. These findings indicate that, in hepatocytes, net coupled Na+ and HCO3- movement is inward and represents a major determinant of Na+ influx and Na+/K+ pump activity. About half of hepatic Na+/K+ pump activity appears dedicated to recycling Na+ entering in conjunction with HCO3- to maintain [Na+]i within the physiologic range

  11. Clinical features of multiple sclerosis in the south of Brazil: a partial analysis Características clínicas da esclerose múltipla no sul do Brasil: uma análise parcial

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    Alessandro Finkelsztejn

    2009-12-01

    Full Text Available There are no published studies on the characteristics of multiple sclerosis (MS patients from the south of Brazil. OBJECTIVE: To identify the clinical features of a series of MS patients and to compare to other Brazilian series. METHOD: Retrospective study with 67 patients followed in The MS Reference Center - RS, Brazil during the year of 2008. We analyzed demographic and clinical data. RESULTS: Most were women (74.6%, the general average age was 43.5 years old, and the general average EDSS score was 4.1. Of those patients, 81.8% had relapsing-remitting MS. Sexual dysfunction prevalence was 31.1% in men and 68.9% in women (pNão há dados publicados sobre as características clínicas da esclerose múltipla (EM no estado do Rio Grande do Sul (RS. OBJETIVO: Identificar e comparar as características clínicas de uma série de pacientes com EM no RS com as de outras séries nacionais. MÉTODO: Foram coletados e avaliados dados demográficos e clínicos de 67 pacientes atendidos em nosso centro. RESULTADOS: Houve predomínio de mulheres (74,6%, idade média geral foi de 43,5 anos e EDSS médio de 4,1. O tipo surto-remissão correpondeu a 81,8%. A prevalência de disfunção sexual foi de 31,1% nos homens e 68,9% nas mulheres (p<0,01. Encontrou-se correlação de 0,444 (p<0,05 entre depressão e EDSS. CONCLUSÃO: Este estudo demonstrou uma amostra semelhante às demais amostras brasileiras, apresentando, adicionalmente, elevada prevalência de sintomas sexuais e a estreita associação entre depressão e o grau de incapacidade.

  12. Oriented immobilized anti-hIgG via F(c) fragment-imprinted PHEMA cryogel for IgG purification.

    Science.gov (United States)

    Bereli, Nilay; Ertürk, Gizem; Tümer, M Aşkin; Say, Ridvan; Denizli, Adil

    2013-05-01

    Antibodies are used in many applications, especially as diagnostic and therapeutic agents. Among the various techniques used for the purification of antibodies, immunoaffinity chromatography is by far the most common. For this purpose, oriented immobilization of antibodies is an important step for the efficiency of purification step. In this study, F(c) fragment-imprinted poly(hydroxyethyl methacrylate) cryogel (MIP) was prepared for the oriented immobilization of anti-hIgG for IgG purification from human plasma. Non-imprinted poly(hydroxyethyl methacrylate) cryogel (NIP) was also prepared for random immobilization of anti-hIgG to compare the adsorption capacities of oriented (MIP/anti-hIgG) and random (NIP/anti-hIgG) cryogel columns. The amount of immobilized anti-hIgG was 19.8 mg/g for the NIP column and 23.7 mg/g for the MIP column. Although the amount of immobilized anti-hIgG was almost the same for the NIP and MIP columns, IgG adsorption capacity was found to be three times higher than the NIP/anti-hIgG column (29.7 mg/g) for the MIP/anti-hIgG column (86.9 mg/g). Higher IgG adsorption capacity was observed from human plasma (up to 106.4 mg/g) with the MIP/anti-hIgG cryogel column. Adsorbed IgG was eluted using 1.0 M NaCl with a purity of 96.7%. The results obtained here are very encouraging and showed the usability of MIP/anti-hIgG cryogel prepared via imprinting of Fc fragments as an alternative to conventional immunoaffinity techniques for IgG purification. Copyright © 2012 John Wiley & Sons, Ltd.

  13. Insulin regulation of Na/K pump activity in rat hepatoma cells

    International Nuclear Information System (INIS)

    Gelehrter, T.D.; Shreve, P.D.; Dilworth, V.M.

    1984-01-01

    Insulin rapidly increases Na/K pump activity in HTC rat hepatoma cells in tissue culture, as measured by the ouabain-sensitive influx of the potassium analogue 86Rb+. Increased influx is observed within minutes and is maximal (70% above control) within 1-2 h. The effect appears to be mediated by the insulin receptors, as: the concentration dependence on insulin is identical to that for insulin induction of tyrosine aminotransferase and stimulation of 2-aminoisobutyric acid transport, proinsulin is 6% as potent as insulin, and the effect is blocked by anti-receptor antibodies. The early stimulation of potassium influx is not blocked by cycloheximide and is not associated with an increased number of pump sites as measured by 3 H-ouabain binding. The insulin effect is blocked by amiloride, which blocks sodium influx, and is mimicked by the sodium ionophore monensin, which increases sodium influx and intracellular accumulation. Insulin also rapidly increases the initial rate of 22 Na+ influx, suggesting that insulin may enhance Na/K pump activity, in part, by increasing intracellular sodium concentration. Incubation of HTC cells with insulin for 24 h causes complete unresponsiveness to the insulin induction of transaminase and stimulation of amino acid transport, a phenomenon mediated by postbinding mechanisms. In contrast, similar incubation with insulin does not cause unresponsiveness to the insulin stimulation of Na/K pump activity. Therefore, the site of regulation of responsiveness to insulin must be distal to, or separate from, those events causing stimulation of ion fluxes

  14. The effect of Na vapor on the Na content of chondrules

    Science.gov (United States)

    Lewis, R. Dean; Lofgren, Gary E.; Franzen, Hugo F.; Windom, Kenneth E.

    1993-01-01

    Chondrules contain higher concentrations of volatiles (Na) than expected for melt droplets in the solar nebula. Recent studies have proposed that chondrules may have formed under non-canonical nebular conditions such as in particle/gas-rich clumps. Such chondrule formation areas may have contained significant Na vapor. To test the hypothesis of whether a Na-rich vapor would minimize Na volatilization reaction rates in a chondrule analog and maintain the Na value of the melt, experiments were designed where a Na-rich vapor could be maintained around the sample. A starting material with a melting point lower that typical chondrules was required to keep the logistics of working with Na volatilization from NaCl within the realm of feasibility. The Knippa basalt, a MgO-rich alkali olivine basalt with a melting temperature of 1325 +/- 5 C and a Na2O content of 3.05 wt%, was used as the chondrule analog. Experiments were conducted in a 1 atm, gas-mixing furnace with the fO2 controlled by a CO/CO2 gas mixture and fixed at the I-W buffer curve. To determine the extent of Na loss from the sample, initial experiments were conducted at high temperatures (1300 C - 1350 C) for duration of up to 72 h without a Na-rich vapor present. Almost all (up to 98%) Na was volatilized in runs of 72 h. Subsequent trials were conducted at 1330 C for 16 h in the presence of a Na-rich vapor, supplied by a NaCl-filled crucible placed in the bottom of the furnace. Succeeding Knudsen cell weight-loss mass-spectrometry analysis of NaCl determined the P(sub Na) for these experimental conditions to be in the 10(exp -6) atm range. This value is considered high for nebula conditions but is still plausible for non-canonical environments. In these trials the Na2O content of the glass was maintained or in some cases increased; Na2O values ranged from 2.62% wt to 4.37% wt. The Na content of chondrules may be controlled by the Na vapor pressure in the chondrule formation region. Most heating events capable

  15. Evaluation of anti-rabies vaccination and supplementation with probiotic in the humoral immune response in cattle / Avaliação da vacinação anti-rábica e da suplementação com probiótico na resposta imune humoral em bovinos

    Directory of Open Access Journals (Sweden)

    Luis Souza Lima de Souza Reis

    2009-10-01

    anticorpos. Conclui-se que a vacina anti-rábica é eficiente em produzir soroconversão e em manter os títulos de anticorpos em bovinos primovacinados. A ingestão do probiótico não interferiu na resposta imune humoral anti-rábica.

  16. Anti-idiotypic antibodies directed against anti-HBs among the patients with chronic hepatitis B.

    Science.gov (United States)

    Kobayashi, K; Suzuki, H; Ueno, Y; Nagatomi, R; Kanno, A; Otsuki, M; Toyota, T

    1990-08-01

    Anti-idiotypic antibodies (anti-Id) against anti-HBs were found in the sera of patients with chronic hepatitis type B. Anti-idiotypic antibodies were detected by an enzyme-linked immunosorbent assay using horseradish peroxidase conjugated mouse monoclonal anti-HBs. Ten of 72 HBsAg positive sera contained anti-Id (13.9%). The prevalence of anti-Id did not appear to correlate with HBeAg/anti-HBe system. However, HB virus specific DNA polymerase activity was significantly higher in anti-Id positive sera. In the sera obtained from the patients treated with predonisolone before, anti-Id positive rate was higher than that in the patients without a history of predonisolone therapy. These results suggest that anti-Id may be related to the immunoregulatory mechanism of HB virus replication.

  17. The offer of the anti-HIV test to the users of the health basic net units: different aproaches of professionals

    Directory of Open Access Journals (Sweden)

    Sergio Corrêa Marques

    2015-01-01

    Full Text Available Objetivos: identificar e descrever as condutas dos profissionais de saúde na oferta do teste anti-HIV; analisar as práticas dos profissionais a partir dos relatos das usuárias dos serviços da rede básica de saúde. Método: é um estudo descritivo, qualitativo, com 40 mulheres assistidas em 08 Centros Municipais de Saúde. Resultados: a produção discursiva das entrevistas foi submetida ao programa Alceste, constituindo duas categorias de análise. A primeira contempla as abordagens no atendimento individual na rede de CMS do Rio de Janeiro descrevendo os três modos de conduta dos profissionais de saúde durante a oferta de teste anti-HIV. A segunda categoria refere-se às abordagens no atendimento coletivo, onde se observa que as atividades de aconselhamento não ocorrem de maneira uniforme. Conclusão: que os resultados apontam para uma prática que se desvirtua do que vem sendo preconizado pelos Programas oficiais em relação ao Aconselhamento.

  18. Multiple sclerosis outcome and morbi-mortality of a Brazilian cohort patients Caracteristicas clínico-evolutivas e morbi-mortalidade de uma coorte de pacientes brasileiros com esclerose múltipla

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    Soniza Vieira Alves-Leon

    2008-01-01

    Full Text Available We studied the clinical and evolution characteristics of multiple sclerosis (MS patients followed since the onset of HUCFF/UFRJ in 1978. The diagnosis of MS was based on Poser's et al. and MC Donald's et al. criteria. From 188 patients, 122 were included. Eighty-five were females. The mean age onset was 32.2 years-old (range 6.0 to 61.0±10.3, mainly Caucasians (82/67%. The relapsing-remitting course (MSRR was more frequent (106/86.8%. Monosymptomatic onset was significantly more frequent in Caucasians than in Afro-Brazilians (pEstudamos as características clínico-evolutivas de pacientes com esclerose múltipla (EM acompanhados no HUCFF-UFRJ desde 1978. Foram usados critérios de Poser et al. e MC Donald et al. para o diagnóstico de EM. De 188, 122 foram incluídos. Oitenta e cinco eram mulheres. A média de idade de início foi 32,2 anos (6,0-61,0±10,3, predominando caucasianos (n=82/67%. A forma recorrente-remitente (EMRR foi mais freqüente (n=106/86,8%. Formas mono-sintomáticas no primeiro surto foram significativamente mais freqüentes em caucasianos do que em afro-brasileiros (p<0,05. Dezessete pacientes apresentavam a forma benigna (13,9% e 43 a grave (35,2%. A forma benigna foi associada com a EMRR (p=0,01. A taxa de letalidade 2,12% (4 óbitos. Nossos resultados são semelhantes aos de outras séries brasileiras no que se refere ao sexo e idade, e falta de correlação entre EDSS e número de surtos; confirmamos gradiente sul-sudeste de distribuição afro-descendente, associação significativa entre primeiro surto mono-sintomático e caucasianos e menor freqüência de formas benignas.

  19. Na/K pump inactivation, subsarcolemmal Na measurements, and cytoplasmic ion turnover kinetics contradict restricted Na spaces in murine cardiac myocytes.

    Science.gov (United States)

    Lu, Fang-Min; Hilgemann, Donald W

    2017-07-03

    Decades ago, it was proposed that Na transport in cardiac myocytes is modulated by large changes in cytoplasmic Na concentration within restricted subsarcolemmal spaces. Here, we probe this hypothesis for Na/K pumps by generating constitutive transsarcolemmal Na flux with the Na channel opener veratridine in whole-cell patch-clamp recordings. Using 25 mM Na in the patch pipette, pump currents decay strongly during continuous activation by extracellular K (τ, ∼2 s). In contradiction to depletion hypotheses, the decay becomes stronger when pump currents are decreased by hyperpolarization. Na channel currents are nearly unchanged by pump activity in these conditions, and conversely, continuous Na currents up to 0.5 nA in magnitude have negligible effects on pump currents. These outcomes are even more pronounced using 50 mM Li as a cytoplasmic Na congener. Thus, the Na/K pump current decay reflects mostly an inactivation mechanism that immobilizes Na/K pump charge movements, not cytoplasmic Na depletion. When channel currents are increased beyond 1 nA, models with unrestricted subsarcolemmal diffusion accurately predict current decay (τ ∼15 s) and reversal potential shifts observed for Na, Li, and K currents through Na channels opened by veratridine, as well as for Na, K, Cs, Li, and Cl currents recorded in nystatin-permeabilized myocytes. Ion concentrations in the pipette tip (i.e., access conductance) track without appreciable delay the current changes caused by sarcolemmal ion flux. Importantly, cytoplasmic mixing volumes, calculated from current decay kinetics, increase and decrease as expected with osmolarity changes (τ >30 s). Na/K pump current run-down over 20 min reflects a failure of pumps to recover from inactivation. Simulations reveal that pump inactivation coupled with Na-activated recovery enhances the rapidity and effectivity of Na homeostasis in cardiac myocytes. In conclusion, an autoregulatory mechanism enhances cardiac Na/K pump activity when

  20. Synthesis of Cu3N from CuO and NaNH2

    Directory of Open Access Journals (Sweden)

    Akira Miura

    2014-12-01

    Full Text Available We report on the low-temperature synthesis of submicron-sized Cu3N powder produced from CuO and NaNH2 powder mixture by heating at 150–190 °C in a Teflon-sealed autoclave. The structure was the anti-RuO3 type with a lattice parameter of 0.3814(1 nm, and strong optical absorption was observed below ∼1.9 eV. This synthesis method has the potential of facile control of the reaction with less use of ammonia sources.

  1. Intravenous Immunoglobulin therapy for anti-E hemolytic disease in the newborn.

    Science.gov (United States)

    Onesimo, Roberta; Rizzo, Daniela; Ruggiero, Antonio; Valentini, Piero

    2010-09-01

    Anti-E alloimmunisation is a less common cause of haemolytic disease in the newborn (HDN) and is usually associated with mild to moderate clinical manifestations, that are often less severe than anti-D immunisation. Conventional treatments for HDN are phototherapy and exchange transfusion, the latter still representing a high-risk procedure. Currently, intravenous immunoglobulin has been used as alternative treatment for HDN to reduce the need for exchange transfusion, as well as the length of phototherapy and hospitalisation. We report a case of anti-E HDN treated successfully with intravenous immunoglobulin, as adjuvant treatment to phototherapy.

  2. Atividades antiúlcera e antioxidante Baccharis trimera (Less DC (Asteraceae

    Directory of Open Access Journals (Sweden)

    Larissa Funabashi de Toledo Dias

    Full Text Available A "carqueja", Baccharis trimera (Less DC (Asteraceae, é uma espécie vegetal característica de regiões tropicais, muito utilizada na medicina popular como antiinflamatória, hipoglicemiante e em tratamento de problemas digestivos. A avaliação da atividade antiúlcera do extrato bruto liofilizado e do extrato liofilizado da "resina" (porção que durante a concentração dos extratos ficava depositada no fundo do recipiente com aspecto viscoso e pegajoso foi realizada através de indução aguda por etanol acidificado. O extrato bruto liofilizado, na dose de 400 mg/ kg, reduziu a área de lesão em 90%, 200 mg/kg, 87%, 100 mg/kg, 66% e o fármaco controle (lansoprazol, 66%. O extrato liofilizado da "resina", administrado na dose de 400 mg/kg, reduziu a área de lesão em 82%, 200 mg/kg, 82%, 100 mg/kg, 53% e o fármaco controle (lansoprazol, 70%. A atividade antioxidante foi ensaiada com extrato bruto liofilizado, extrato liofilizado da "resina", pó da droga e frações clorofórmica, acetato de etila, etanol e etanol 50% através do método que reduz o radical 2,2'-difenil-1-picril-hidrazil (DPPH, permitindo após o equilíbrio da reação, calcular a quantidade de antioxidante gasta para reduzir 50% do DPPH, apresentando resultado evidente, comparado à vitamina E. Não foram verificados sinais de alteração aparente no ensaio de toxicidade na dose única de 5g/kg, em camundongos.

  3. Esclerose múltipla simulando tumor cerebral: apresentação de caso com comprovação histopatológica

    Directory of Open Access Journals (Sweden)

    Charles Peter Tilbery

    1995-06-01

    Full Text Available Os autores apresentam o caso de uma paciente com 41 anos de idade que iniciou seu quadro clínico com hemiparesia direita progressiva. A RNM revelou massa expansiva na região temporoparietal esquerda e lesão menor na área frontal direita. O exame do LCR foi normal. Devido à possibilidade de se tratar de tumor ou abscesso, a paciente foi submetida a biópsia cerebral. O resultado revelou tratar-se de área de desmielinização, sendo negativos os testes efetuados para vírus.

  4. Dyskinesia induced by phenytoin Discinesia induzida por fenitoína

    Directory of Open Access Journals (Sweden)

    M. AUGUSTA MONTENEGRO

    1999-06-01

    Full Text Available Phenytoin is an effective antiepileptic drug, although, it can be associated with many side effects, including dyskinesia. OBJECTIVE: To describe the clinical characteristics of phenytoin induced dyskinesia. METHODS: We investigated the occurrence of involuntary movements in patients followed at our adult and pediatric epilepsy clinics during the period of one year. RESULTS: Three patients presented with phenytoin-induced dyskinesia: one adult with axial and orofacial dyskinesia, and two children with choreoathetosis. They did not have other signs of phenytoin intoxication and had complete recovery after phenytoin withdrawal. CONCLUSION: Phenytoin induced dyskinesia may occur during either chronic or initial treatment and with normal serum phenytoin levels. However, it occurs most often in patients on polytherapy, usually after increasing dosage and with toxic serum levels. Other signs of phenytoin intoxication may be present in these patients, but often the dyskinesia is the only side effect, which may delay the diagnosis and treatment. The clinical characteristics of the involuntary movements vary and may be focal or generalized, most often characterized by choreoathetosis and dyskinesias. These may last for hours, days or even years, but frequently disappear completely after phenytoin withdrawal.Fenitoína é droga anti-epiléptica eficaz, mas pode estar associada a vários efeitos colaterais, inclusive discinesia. OBJETIVO: Descrever as características clínicas da discinesia induzida por fenitoína. MÉTODO: Avaliamos a ocorrência de movimentos involuntários em pacientes seguidos nos ambulatórios de epilepsia durante o período de um ano. RESULTADOS: Três pacientes apresentaram discinesia induzida por fenitoína: um adulto com discinesia orofacial e duas crianças com coreoatetose. Eles não tinham outros sinais de intoxicação por fenitoína e apresentaram recuperação completa após a retirada da fenitoína. CONCLUSÃO: Discinesia

  5. PRODUKSI ANTIBODI KUNING TELUR (IGY ANTI STREPTOCOCCUS MUTANS SEBAGAI ANTI KARIES GIGI

    Directory of Open Access Journals (Sweden)

    Okti Nadia Poetri

    2006-12-01

    Full Text Available The aim of this study was to explore IgY anti Streptococcus mutan production and the ability of Igy Streptococcus mutans blocking adhesion process. The eggs was collected from Single Comb Brown Leghorn which have been immunized by S. mutan. Agar gel precipitation test was done to detect IgY anti S. mutans in serum and egg. Egg which Countain IgY anti S. mutans was collected. IgY anti S. mutans extracted from egg yolk by mean s PEG-Amonium sulfat and purified using fast protein liquid chromatography. The purity of Igy anti S. mutans was determined by UV spectropometer. Biological activities of Igy anti S. mutans to inhibit adhession process was learned by anti adhesion test. We use two dose of IgY, which is 100 ug and 500 ug. Igy anti S. mutans formen in serum five weeks after the first immunization while it formed in egg nine weeks after the first immunization. Igy anti S. mutanss still present in serum andegg until twelve weeks from the first immunization. Igy anti S. mutanss could decrease the amount of bacteria which attach the epithelial cell surface. The amount of sticky bacteria on epithelial cell (without IgY are 40 cell bacteria/epithelial cell. After blocked by IgY anti S. mutanss the amount of bacteria turn into 30 cell bacteria/epithelial cell (for dose of 100 ug IgY and 28 cell bacteria/epitheelial cell (for dose of 500 ug IgY. This research concluded that hens were capable producing IgY anti S. mutanss in egg yolk and it can be used to solve dental caries problem which caused by S. mutanss.

  6. Explicit and implicit effects of anti-marijuana and anti-tobacco TV advertisements.

    Science.gov (United States)

    Czyzewska, Maria; Ginsburg, Harvey J

    2007-01-01

    Effects of anti-tobacco and anti-marijuana TV advertisements on explicit (i.e., semantic differential ratings) and implicit (i.e. Implicit Association Test, IAT) attitudes toward tobacco and marijuana were compared. Two hundred twenty nine, 18- to 19-year-old U.S. college students were randomly assigned to anti-tobacco or anti-marijuana PSA viewing conditions. Participants completed a short survey on attitudes to tobacco and marijuana. Afterwards they watched 15 PSAs embedded in a 15-min science program. At the end, all participants completed IAT for marijuana, IAT for tobacco and the assessment of explicit attitudes. Results of ANCOVA revealed a significant interaction between type of TV PSAs watched and implicit attitudes, F(1,223)=7.12, padvertisements watched (i.e., anti-tobacco or anti-marijuana). However, analogical analysis on explicit measures showed that attitudes to marijuana became less negative among students that watched anti-marijuana ads than the group with anti-tobacco ads, F(1,222)=5.79, p<0.02. The discussion focused on the practical and theoretical implications of the observed dissociation between implicit and explicit attitudes to marijuana after the exposure to anti-marijuana PSAs.

  7. A 'revolução criativa' na publicidade dos anos sessenta

    OpenAIRE

    Rosa, António Machuco

    2014-01-01

    A presente comunicação tem como principal objectivo avaliar até que ponto a chamada 'revolução criativa' (creative revolution) na publicidade dos anos sessenta constituiu uma ruptura em relação às formas de publicidade até então dominantes. São analisadas diversas campanhas concebidas por Bill Bernbach e por Mary Wells Lawrence. Será ainda analisada uma campanha dos cigarros Camel que serve de exemplo das estratégias de diferenciação individual que conduzem à formação de uma anti-moda assente...

  8. Na+/Ca2+ exchange and Na+/K+-ATPase in the heart

    Science.gov (United States)

    Shattock, Michael J; Ottolia, Michela; Bers, Donald M; Blaustein, Mordecai P; Boguslavskyi, Andrii; Bossuyt, Julie; Bridge, John H B; Chen-Izu, Ye; Clancy, Colleen E; Edwards, Andrew; Goldhaber, Joshua; Kaplan, Jack; Lingrel, Jerry B; Pavlovic, Davor; Philipson, Kenneth; Sipido, Karin R; Xie, Zi-Jian

    2015-01-01

    This paper is the third in a series of reviews published in this issue resulting from the University of California Davis Cardiovascular Symposium 2014: Systems approach to understanding cardiac excitation–contraction coupling and arrhythmias: Na+ channel and Na+ transport. The goal of the symposium was to bring together experts in the field to discuss points of consensus and controversy on the topic of sodium in the heart. The present review focuses on cardiac Na+/Ca2+ exchange (NCX) and Na+/K+-ATPase (NKA). While the relevance of Ca2+ homeostasis in cardiac function has been extensively investigated, the role of Na+ regulation in shaping heart function is often overlooked. Small changes in the cytoplasmic Na+ content have multiple effects on the heart by influencing intracellular Ca2+ and pH levels thereby modulating heart contractility. Therefore it is essential for heart cells to maintain Na+ homeostasis. Among the proteins that accomplish this task are the Na+/Ca2+ exchanger (NCX) and the Na+/K+ pump (NKA). By transporting three Na+ ions into the cytoplasm in exchange for one Ca2+ moved out, NCX is one of the main Na+ influx mechanisms in cardiomyocytes. Acting in the opposite direction, NKA moves Na+ ions from the cytoplasm to the extracellular space against their gradient by utilizing the energy released from ATP hydrolysis. A fine balance between these two processes controls the net amount of intracellular Na+ and aberrations in either of these two systems can have a large impact on cardiac contractility. Due to the relevant role of these two proteins in Na+ homeostasis, the emphasis of this review is on recent developments regarding the cardiac Na+/Ca2+ exchanger (NCX1) and Na+/K+ pump and the controversies that still persist in the field. PMID:25772291

  9. The prozone effect exerted by the complement-binding anti-Lea on anti-D.

    Science.gov (United States)

    Joshi, Sanmukh R; Parekh, Kamlesh H

    2017-01-01

    Prozone phenomenon is seen with very high-titer antibodies in an immune serum. The prozone effect on anti-D by a low-titer anti-Le a was investigated associated with neonatal jaundice. Standard methods were used in investigations. The child was born at full-term developed mild jaundice. With weak direct antiglobulin test+, her indirect serum bilirubin was progressed to 27.5 mg/dL in 48 h. Anti-D and anti-Le a were detected in the mother. Both these antibodies were detected in the child's serum though the eluate from red blood cells (RBCs) contained only anti-D. Mother's anti-D was masked by anti-Le a if the RBCs possessed both the antigens together. Anti-D was revealed only with D-positive RBCs lacking Le a or if the serum was modified by mixing with Le a+ saliva or was heated at 56°C or fortified with citrate solution. An anti-D showed prozone effect exerted by the complement-fixing anti-Le a in the test.

  10. The anti pp yields anti λ λ reaction near threshold

    International Nuclear Information System (INIS)

    Maher, C.J.

    1986-06-01

    Measurements of differential and integrated cross sections as well as final state polarizations for the anti p p → anti Λ Λ reaction are presented. The reaction was studied at two incident antiproton momenta (1476.5 MeV/c and 1507.5 MeV/c) corresponding to total center of mass energies of 15.5 MeV and 26.4 MeV above the reaction threshold. The trajectories of charged decay products of the anti Λ and Λ were observed in a multiwire proportional chamber and in two sets of drift chambers. The data were analyzed with a computer program which reconstructed anti p p → anti Λ Λ → anti p π + pπ - events and performed kinematic fitting. The results are compared to several recent meson exchange calculations, and a one-gluon exchange calculation. The experiment was performed at the Low Energy Antiproton Ring (LEAR) at CERN. The data presented represent the first results of the PS185 collaboration's study of the threshold production of hyperon-antihyperon states

  11. Terapia anti-retroviral: fatores que interferem na adesão de crianças com HIV/AIDS Terapia anti-retroviral: factores que interfieren en la adherencia de niños con VIH/SIDA Antiretroviral therapy: factors interfering in the adherence of children with HIV/AIDS

    Directory of Open Access Journals (Sweden)

    Ana Claúdia Feitosa

    2008-09-01

    Full Text Available O objetivo deste estudo foi conhecer os fatores que interferem na adesão à terapêutica medicamentosa em crianças infectadas pelo HIV/AIDS, relatados por 12 cuidadores em um serviço de referência em AIDS, em Fortaleza-CE. Os dados foram obtidos mediante entrevista, e, com eles, foram apurados fatores que dificultaram a adesão terapêutica, evidenciando relatos referentes à apresentação da droga, horário da tomada do medicamento, efeitos colaterais, falta na distribuição de medicamento gratuito, dificuldade de acesso regular ao serviço de saúde e problemas financeiros. Constatou-se a importância de conhecer o contexto social no qual a criança está inserida e as dificuldades no uso dos anti-retrovirais para intervir de forma eficiente e possibilitar uma melhor qualidade de vida às crianças.La finalidad de este estudio fue conocer los factores que interfieren en la adherencia a la terapéutica medicamentosa en niños infectados por el VIH/sida relatados por 12 cuidadores en un servicio de referencia en sida, en Fortaleza-CE, Brasil. Los datos fueron obtenidos mediante entrevista, y, con ellos fueran apurados factores que dificultaron la adherencia terapéutica, evidenciando relatos referentes a la presentación de la droga, horario de la toma del medicamento, efectos colaterales, falta en la distribución de medicamento gratuito, dificultad de acceso regular al servicio de salud y problemas financieros. Se constató la importancia de conocer el contexto social en que el niño está insertado y las dificultades en el uso de los anti-retrovirales para intervenir de forma eficiente y posibilitar una mejor calidad de vida a los niños.This study aimed to get to know the factors that interfere in medication treatment adherence among children infected by HIV/aids, as reported by 12 caregivers in a service reference to aids in Fortaleza/CE, Brazil. Data were collected through interviews, verifying factors that made treatment adherence

  12. Production of d, t, 3He, anti d, anti t and anti 3He by 200 GeV protons

    International Nuclear Information System (INIS)

    Bozzoli, W.; Giacomelli, G.; Rimondi, F.; Zylberajch, S.; Lesquoy, E.; Meunier, R.; Moscoso, L.; Muller, A.; Bussiere, A.

    1978-01-01

    Data are presented on the yields of d, t, 3 He, anti d, anti t, and anti 3 He with laboratory momenta between 12 and 37 GeV/c produced by 200 GeV protons on beryllium and aluminium. The production yield of nuclei depends significantly on the target nucleus, while the anti d production is independent of target material. The mass dependence of the production cross section is exponential for both nuclei and antinuclei

  13. Isolation and characterization of a specific endogenous Na/sup +/, K/sup +/-ATPase inhibitor from bovine adrenal

    Energy Technology Data Exchange (ETDEWEB)

    Tamura, M.; Lam, T.T.; Inagami, T.

    1988-06-14

    In order to identify a specific endogenous Na/sup +/,K/sup +/-ATPase inhibitor which could possibly be related to salt-dependent hypertension, the authors looked for substances in the methanol extract of bovine whole adrenal which show all of the following properties: (i) inhibitory activity for Na/sup +/,K/sup +/-ATPase; (ii) competitive displacing activity against (/sup 3/H)ouabain binding to the enzyme; (iii) inhibitory activity for /sup 86/Rb uptake into intact human erythrocytes; and (iv) cross-reactivity with sheep anti-digoxin-specific antibody. After stepwise fractionation of the methanol extract of bovine adrenal glands by chromatography on a C/sub 18/ open column, a 0-15% acetonitrile fraction was fractionated by high-performance liquid chromatography on a Zorbax octadecylsilane column. One of the most active fractions in 0-15% acetonitrile was found to exhibit all of the four types of the activities. It was soluble in water and was distinct from various substances which have been known to inhibit Na/sup +/,K/sup +/-ATPase. These results strongly suggest that this water-soluble nonpeptidic Na/sup +/,K/sup +/-ATPase inhibitor may be a specific endogenous regulator for the ATPase.

  14. Obtención de anticuerpos monoclonales de ratón contra proteasa de cisteína 5 recombinante de Entamoeba histolytica

    Directory of Open Access Journals (Sweden)

    Juanita Trejos S.

    2012-08-01

    Full Text Available Objetivo. Obtener anticuerpos monoclonales de ratón contra la proteasas de cisteína 5 (EhCP5 de Entamoeba histolytica. Materiales y métodos. Se inmunizaron ratones BALB/c por vía intraperitoneal con adyuvante de Freund completo e incompleto con la proteína recombinante EhCP5 obtenida a partir del cultivo de E.coli DH5α trasfectada con el vector recombinante pJC45 que expresa dicha proteína. Se seleccionó el animal con mejor respuesta de anticuerpos. Al cual se le extrajo su bazo como fuente de linfocitos B, los cuales se fusionaron utilizando PEG con células de mieloma de ratón SP2-0/Ag14. Se procedió a selección de los hibridomas y a la evaluación de los sobrenadantes de las colonias que crecieron a los 7 días mediante ELISA. Los hibridomas con valores más altos de anticuerpos específicos contra la proteína EhCP5r se seleccionaron, y los clones obtenidos por diluciones limitantes fueron expandidos. Resultados. A partir de un clon secretor estable se purifico el anticuerpo monoclonal anti EhCP5r del isotipo IgG1 por cromatografía de afinidad con proteína G. Los clones fueron expandidos in vivo e in vitro. Con el anticuerpo purificado se diseñaron tres sistemas de captura para evaluar la aplicabilidad del anticuerpo monoclonal anti EhCP5r como método inmunodiagnóstico. Conclusiones. Se logro la producción de un anticuerpo monoclonal específico contra EhCP5r que permite diferenciar Entamoeba histolytica de Entamoeba dispar.

  15. Altered Na+ transport after an intracellular alpha-subunit deletion reveals strict external sequential release of Na+ from the Na/K pump.

    Science.gov (United States)

    Yaragatupalli, Siddhartha; Olivera, J Fernando; Gatto, Craig; Artigas, Pablo

    2009-09-08

    The Na/K pump actively exports 3 Na(+) in exchange for 2 K(+) across the plasmalemma of animal cells. As in other P-type ATPases, pump function is more effective when the relative affinity for transported ions is altered as the ion binding sites alternate between opposite sides of the membrane. Deletion of the five C-terminal residues from the alpha-subunit diminishes internal Na(+) (Na(i)(+)) affinity approximately 25-fold [Morth et al. (2007) Nature 450:1043-1049]. Because external Na(+) (Na(o)(+)) binding is voltage-dependent, we studied the reactions involving this process by using two-electrode and inside-out patch voltage clamp in normal and truncated (DeltaKESYY) Xenopus-alpha1 pumps expressed in oocytes. We observed that DeltaKESYY (i) decreased both Na(o)(+) and Na(i)(+) apparent affinities in the absence of K(o)(+), and (ii) did not affect apparent Na(o)(+) affinity at high K(o)(+). These results support a model of strict sequential external release of Na(+) ions, where the Na(+)-exclusive site releases Na(+) before the sites shared with K(+) and the DeltaKESYY deletion only reduces Na(o)(+) affinity at the shared sites. Moreover, at nonsaturating K(o)(+), DeltaKESYY induced an inward flow of Na(+) through Na/K pumps at negative potentials. Guanidinium(+) can also permeate truncated pumps, whereas N-methyl-D-glucamine cannot. Because guanidinium(o)(+) can also traverse normal Na/K pumps in the absence of both Na(o)(+) and K(o)(+) and can also inhibit Na/K pump currents in a Na(+)-like voltage-dependent manner, we conclude that the normal pathway transited by the first externally released Na(+) is large enough to accommodate guanidinium(+).

  16. Adrenoleucodistrofia (leucodistrofia melanodermica: registro de um caso anatomo-clinico

    Directory of Open Access Journals (Sweden)

    Mario Wilson Iervolino Brotto

    1979-06-01

    Full Text Available É relatado o caso de um paciente de 14 anos, do sexo masculino, com esclerose cerebral difusa precedida em 7 anos de sinais de insuficiência do córtex supra-renal, com antecedentes familiares. Clinicamente a doença é caracterizada por deterioração mental, distúrbios da marcha e da visão, associados com insuficiência do córtex supra-renal. Confirmando os dados da literatura, em nosso caso o estudo anátomo-patológico revelou desmielinização e gliose difusa na substância branca cerebral, poupando as fibras subcorticais. Células inflamatórias são comuns e têm distribuição perivascular. Na zona fasciculada e reticular da supra-renal, células "balonadas" são evidentes, muitas delas apresentando citoplasma vacuolizado e com estriações. Inclusões lipídicas similares têm sido encontradas nas células de Schwann dos nervos periféricos e dos testículos. Os achados são comparados com vinte casos da literatura.

  17. Herba Cistanches: Anti-aging

    OpenAIRE

    Wang, Ningqun; Ji, Shaozhen; Zhang, Hao; Mei, Shanshan; Qiao, Lumin; Jin, Xianglan

    2017-01-01

    The Cistanche species (“Rou Cong Rong” in Chinese) is an endangered wild species growing in arid or semi-arid areas. The dried fleshy stem of Cistanches has been used as a tonic in China for many years. Modern pharmacological studies have since demonstrated that Herba Cistanches possesses broad medicinal functions, especially for use in anti-senescence, anti-oxidation, neuroprotection, anti-inflammation, hepatoprotection, immunomodulation, anti-neoplastic, anti-osteoporosis and the promotion ...

  18. Estudo piloto sobre a eficácia do losartan no tratamento do fenômeno de Raynaud (FRy e correlação com alterações na microcirculação em pacientes com esclerose sistêmica (ES Pilot study on losartan efficacy in the treatment of Raynaud's phenomenon (RP and correlation with microcirculation alterations in patients with systemic sclerosis (SSc

    Directory of Open Access Journals (Sweden)

    Cristiane Kayser

    2005-12-01

    Full Text Available OBJETIVOS: Avaliar a eficácia do losartan no tratamento do fenômeno de Raynaud (FRy em pacientes com FRy secundário à esclerose sistêmica (ES. Avaliamos também as anormalidades bioquímicas da microcirculação, através de dosagem da lacticemia de polpa digital associada a um estímulo frio (LPD-EF e às anormalidades anatômicas da microcirculação, através da capilaroscopia periungueal (CPU, antes e após a intervenção terapêutica, buscando possíveis correlações com a ação do losartan no nível microvascular. MÉTODOS: Trata-se de um estudo aberto em que foram selecionados consecutivamente dez pacientes com diagnóstico de ES e FRy presentes na seleção. Sete pacientes receberam losartan 50 mg/dia e três, 100 mg/dia VO por quatro semanas. Os pacientes foram avaliados quanto à eficácia da droga, através de questionários aplicados no dia 0 e ao término das semanas 1, 2, 3, e 4. Capilaroscopia periungueal e o teste da LPD-EF foram realizados no início e ao final do estudo. RESULTADOS: Observamos melhora significativa na escala de gravidade do FRy ao analisarmos as semanas 0 a 4 (p=0,048. Em relação à escala visual analógica da dor, ao número de ataques de FRy por dia e à duração estimada dos ataques, observamos queda nos parâmetros analisados entre as semanas 0 a 4, mas tal diminuição não alcançou diferença significante. Não houve diferença significativa em relação aos parâmetros analisados pela CPU e aos valores de "LPD entre as semanas 0 e 4. CONCLUSÕES: O losartan parece apresentar benefício terapêutico discreto ou moderado em pacientes com FRy secundário à ES, não modificando os parâmetros morfológicos ou bioquímicos da microcirculação.OBJECTIVES: To evaluate the efficacy of losartan for the treatment of Raynaud's phenomenon (RP secondary to systemic sclerosis. We also evaluated the biochemical abnormalities of the microcirculation using the cold stimulus-fingertip lacticemy test (CS

  19. Herba Cistanches: Anti-aging.

    Science.gov (United States)

    Wang, Ningqun; Ji, Shaozhen; Zhang, Hao; Mei, Shanshan; Qiao, Lumin; Jin, Xianglan

    2017-12-01

    The Cistanche species ("Rou Cong Rong" in Chinese) is an endangered wild species growing in arid or semi-arid areas. The dried fleshy stem of Cistanches has been used as a tonic in China for many years. Modern pharmacological studies have since demonstrated that Herba Cistanches possesses broad medicinal functions, especially for use in anti-senescence, anti-oxidation, neuroprotection, anti-inflammation, hepatoprotection, immunomodulation, anti-neoplastic, anti-osteoporosis and the promotion of bone formation. This review summarizes the up-to-date and comprehensive information on Herba Cistanches covering the aspects of the botany, traditional uses, phytochemistry and pharmacology, to lay ground for fully elucidating the potential mechanisms of Herba Cistanches' anti-aging effect and promote its clinical application as an anti-aging herbal medicine.

  20. Anti-arrythemic and anti-hyperlipidaemic potentials of aqueous ...

    African Journals Online (AJOL)

    Anti-arrythemic and anti-hyperlipidaemic potentials of aqueous garlic extract in hyper-cholesterolaemic rat. H U Nwanjo, G O Oze. Abstract. No Abstract. IJONAS Vol. 3 (2) 2007: pp. 214-221. Full Text: EMAIL FULL TEXT EMAIL FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT.

  1. Approach to a Pregnant Woman with Anti D + Anti C Reactivity Pattern: A Diagnostic Conundrum.

    Science.gov (United States)

    Rai, Preeti; Sharma, Geetika; Singh, Deeksha; Garg, Jyoti

    2017-09-01

    The Rhesus G antigen is present on all RBCs that are C+ and also on most D+ RBCs. Due to this co-distribution of G with either C or D antigen, it mimics a reactivity pattern of anti C + anti D on Indirect Antiglobulin Test (IAT), though the role of Anti G in causing Hemolytic Disease of Newborn (HDN) is controversial. The differentiation of anti D, anti C, and anti G is essential particularly in pregnant females. We hereby report a rare case of anti G with anti D and anti C in a pregnant woman with emphasis on approach to identify anti D+C+G and its implications.

  2. Synthesis and anti-depressant evaluation of novel pyrazolone derivatives

    Directory of Open Access Journals (Sweden)

    Vijay Kumar Merugumolu

    2016-06-01

    Full Text Available Diazotization of substituted anilines with NaNO2 and concentrated hydrochloric acid at 0ºC gave the diazonium chlorides. Coupling of substituted aryl diazonium chlorides with ethyl acetoacetate in methanol gave ethyl-2-aryl-hydrazono-3-oxobutyrates (2a-h. Reaction of (2a-h with naphthoic carbohydrazide (3 gave the title compounds pyrazolone derivatives (4a-h. The newly synthesized compounds were screened for their in vivo anti-depressant activity by tail suspension test and forced swimming test. Some of the tested compounds 4f, 4g showed very good activity when compared to the standard drug imipramine. The newly synthesized compounds were characterized by physical parameters and the structures were elucidated by spectral data.

  3. Anti-CD20 B-cell depletion enhances monocyte reactivity in neuroimmunological disorders

    Directory of Open Access Journals (Sweden)

    Hohlfeld Reinhard

    2011-10-01

    Full Text Available Abstract Background Clinical trials evaluating anti-CD20-mediated B-cell depletion in multiple sclerosis (MS and neuromyelitis optica (NMO generated encouraging results. Our recent studies in the MS model experimental autoimmune encephalomyelitis (EAE attributed clinical benefit to extinction of activated B-cells, but cautioned that depletion of naïve B-cells may be undesirable. We elucidated the regulatory role of un-activated B-cells in EAE and investigated whether anti-CD20 may collaterally diminish regulatory B-cell properties in treatment of neuroimmunological disorders. Methods Myelin oligodendrocyte glycoprotein (MOG peptide-immunized C57Bl/6 mice were depleted of B-cells. Functional consequences for regulatory T-cells (Treg and cytokine production of CD11b+ antigen presenting cells (APC were assessed. Peripheral blood mononuclear cells from 22 patients receiving anti-CD20 and 23 untreated neuroimmunological patients were evaluated for frequencies of B-cells, T-cells and monocytes; monocytic reactivity was determined by TNF-production and expression of signalling lymphocytic activation molecule (SLAM. Results We observed that EAE-exacerbation upon depletion of un-activated B-cells closely correlated with an enhanced production of pro-inflammatory TNF by CD11b+ APC. Paralleling this pre-clinical finding, anti-CD20 treatment of human neuroimmunological disorders increased the relative frequency of monocytes and accentuated pro-inflammatory monocyte function; when reactivated ex vivo, a higher frequency of monocytes from B-cell depleted patients produced TNF and expressed the activation marker SLAM. Conclusions These data suggest that in neuroimmunological disorders, pro-inflammatory APC activity is controlled by a subset of B-cells which is eliminated concomitantly upon anti-CD20 treatment. While this observation does not conflict with the general concept of B-cell depletion in human autoimmunity, it implies that its safety and

  4. Hemolytic disease of the fetus and newborn caused by anti-E

    OpenAIRE

    Usman, Adiyyatu Sa?idu; Mustaffa, Rapiaah; Ramli, Noraida; Diggi, Sirajo A.

    2013-01-01

    Objective: Maternal allo-antibody production is stimulated when fetal red blood cells are positive for an antigen absent on the mother′s red cells. The maternal IgG antibodies produced will pass through the placenta and attack fetal red cells carrying the corresponding antigen. Allo-immune hemolytic disease of the fetus and newborn caused by anti-E rarely occurs. Case summary: We report two cases of anti-E hemolytic diseases in neonates. One of the neonates had severe hemolysis presenting wit...

  5. Anti-inflammatory, anti-cholinergic and cytotoxic effects of Sida rhombifolia.

    Science.gov (United States)

    Mah, Siau Hui; Teh, Soek Sin; Ee, Gwendoline Cheng Lian

    2017-12-01

    Sida (Malvaceae) has been used as a traditional remedy for the treatment of diarrhoea, malarial, gastrointestinal dysentery, fevers, asthma and inflammation. This study evaluates the anti-inflammatory, cytotoxic and anti-cholinergic activities of Sida rhombifolia Linn. whole plant for the first time. S. rhombifolia whole plant was extracted by n-hexane, ethyl acetate and methanol using Soxhlet apparatus. The plant extracts were evaluated for their antioxidant (DPPH, FIC and FRAP), anti-inflammatory (NO and protein denaturation inhibitions), cytotoxic (MTT) and anti-cholinesterase (AChE) properties in a range of concentrations to obtain IC 50 values. GC-MS analysis was carried out on the n-hexane extract. The ethyl acetate extract exhibited the most significant antioxidant activities by scavenging DPPH radicals and ferrous ions with EC 50 of 380.5 and 263.4 μg/mL, respectively. In contrast, the n-hexane extract showed the strongest anti-inflammatory activity with IC 50 of 52.16 and 146.03 μg/mL for NO and protein denaturation inhibition assays, respectively. The same extract also revealed the strongest effects in anti-cholinesterase and cytotoxic tests at the concentration of 100 μg/mL, AChE enzyme inhibition was 58.55% and human cancer cells, SNU-1 and Hep G2 inhibition was 68.52% and 47.82%, respectively. The phytochemicals present in the n-hexane extract are palmitic acid, linoleic acid and γ-sitosterol. The present study revealed that the n-hexane extract possessed relatively high pharmacological activities in anti-inflammation, cytotoxicity and anti-cholinesterase assays. Thus, further work on the detail mechanism of the bioactive phytochemicals which contribute to the biological properties are strongly recommended.

  6. Elemental analysis of brahmi (Bacopa monnieri) extracts by neutron activation and its bioassay for antioxidant, radio protective and anti-lipid peroxidation activity

    International Nuclear Information System (INIS)

    Garg, A.N.; Kumar, A.; Nair, A.G.C.; Reddy, A.V.R.

    2009-01-01

    Brahmi (Bacopa monnieri) leaves, known as nervine tonic in Ayurveda, and its aqueous (BA), methanolic (BM) and aqueous-methanolic (BAM) extracts were analyzed for 7 minor (Al, Fe, Na, K, Ca, P, Cl) and 18 trace (As, Au, Ba, Br, Co, Cr, Cu, Hf, Hg, La, Mn, Rb, Se, Sm, Sr, Th, V, Zn) elements by INAA. BAM extract showed maximum contents of Na, K, Cl and significant amounts of Mn, Co, Zn. It was also found as effective scavenger of DPPH radicals with 33.5% total phenolic content, highest γ-ray radioprotective effect and higher anti lipid peroxidation activity. (author)

  7. Dynamics of Anti-Proton -- Protons and Anti-Proton -- Nucleus Reactions

    CERN Document Server

    Galoyan, A; Uzhinsky, V

    2016-01-01

    A short review of simulation results of anti-proton-proton and anti-proton-nucleus interactions within the framework of Geant4 FTF (Fritiof) model is presented. The model uses the main assumptions of the Quark-Gluon-String Model or Dual Parton Model. The model assumes production and fragmentation of quark-anti-quark and diquark-anti-diquark strings in the mentioned interactions. Key ingredients of the model are cross sections of string creation processes and an usage of the LUND string fragmentation algorithm. They allow one to satisfactory describe a large set of experimental data, especially, a strange particle production, Lambda hyperons and K mesons.

  8. Analysis of the QQ anti Q anti Q tetraquark states with QCD sum rules

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Zhi-Gang [North China Electric Power University, Department of Physics, Baoding (China)

    2017-07-15

    In this article, we study the J{sup PC} = 0{sup ++} and 2{sup ++} QQ anti Q anti Q tetraquark states with the QCD sum rules, and we obtain the predictions M{sub X(cc} {sub anti} {sub c} {sub anti} {sub c,0}{sup {sub +}{sub +)}} =5.99 ± 0.08 GeV, M{sub X(cc} {sub anti} {sub c} {sub anti} {sub c,2}{sup {sub +}{sub +)}} = 6.09 ± 0.08 GeV, M{sub X(bb} {sub anti} {sub b} {sub anti} {sub b,0}{sup {sub +}{sub +)}} = 18.84 ± 0.09 GeV and M{sub X(bb} {sub anti} {sub b} {sub anti} {sub b,2}{sup {sub +}{sub +)}} = 18.85 ± 0.09 GeV, which can be confronted to the experimental data in the future. Furthermore, we illustrate that the diquark-antidiquark type tetraquark state can be taken as a special superposition of a series of meson-meson pairs and that it embodies the net effects. (orig.)

  9. Anti-inflammatory and anti-cancer activity of mulberry (Morus alba L.) root bark

    Science.gov (United States)

    2014-01-01

    Background Root bark of mulberry (Morus alba L.) has been used in herbal medicine as anti-phlogistic, liver protective, kidney protective, hypotensive, diuretic, anti-cough and analgesic agent. However, the anti-cancer activity and the potential anti-cancer mechanisms of mulberry root bark have not been elucidated. We performed in vitro study to investigate whether mulberry root bark extract (MRBE) shows anti-inflammatory and anti-cancer activity. Methods In anti-inflammatory activity, NO was measured using the griess method. iNOS and proteins regulating NF-κB and ERK1/2 signaling were analyzed by Western blot. In anti-cancer activity, cell growth was measured by MTT assay. Cleaved PARP, ATF3 and cyclin D1 were analyzed by Western blot. Results In anti-inflammatory effect, MRBE blocked NO production via suppressing iNOS over-expression in LPS-stimulated RAW264.7 cells. In addition, MRBE inhibited NF-κB activation through p65 nuclear translocation via blocking IκB-α degradation and ERK1/2 activation via its hyper-phosphorylation. In anti-cancer activity, MRBE deos-dependently induced cell growth arrest and apoptosis in human colorectal cancer cells, SW480. MRBE treatment to SW480 cells activated ATF3 expression and down-regulated cyclin D1 level. We also observed that MRBE-induced ATF3 expression was dependent on ROS and GSK3β. Moreover, MRBE-induced cyclin D1 down-regulation was mediated from cyclin D1 proteasomal degradation, which was dependent on ROS. Conclusions These findings suggest that mulberry root bark exerts anti-inflammatory and anti-cancer activity. PMID:24962785

  10. Approach to a Pregnant Woman with Anti D + Anti C Reactivity Pattern: A Diagnostic Conundrum

    OpenAIRE

    Rai, Preeti; Sharma, Geetika; Singh, Deeksha; Garg, Jyoti

    2017-01-01

    The Rhesus G antigen is present on all RBCs that are C+ and also on most D+ RBCs. Due to this co-distribution of G with either C or D antigen, it mimics a reactivity pattern of anti C + anti D on Indirect Antiglobulin Test (IAT), though the role of Anti G in causing Hemolytic Disease of Newborn (HDN) is controversial. The differentiation of anti D, anti C, and anti G is essential particularly in pregnant females. We hereby report a rare case of anti G with anti D and anti C in a pregnant woma...

  11. Active transport of Na+ by reconstituted Na,K-ATPase

    International Nuclear Information System (INIS)

    Boldyrev, A.A.; Svinukhova, I.A.

    1987-01-01

    The ability of ATP, CTP, ITP, GTP, and UTP to support ouabain-sensitive accumulation of Na + by proteoliposomes with a reconstituted Na/K-pump was investigated. At a low [Na + ]/[K + ] ratio in the medium (20 mM/50 mM), a correlation is observed between the proton-accepting capacity of the nucleotide and its effectiveness as a substrate of active transport. To test the hypothesis of the importance of the presence of a negative charge in the 1-position of the purine (3-pyrimidine) base of the nucleotide for mutual transitions between the Na- and K-conformations of Na,K-ATPase they used two analogs of ATP: N 1 -hydroxy-ATP, possessing proton acceptor capacity, and N 1 -methoxy-ATP, in the molecule of which the negative charge is quenched by a methyl group. The first substrate supports active accumulation of Na + in proteoliposomes at the same rate as ATP, whereas the second substrate is relatively ineffective

  12. Novos anti-histamínicos: uma visão crítica New antihistamines: a critical view

    Directory of Open Access Journals (Sweden)

    Inês Cristina Camelo-Nunes

    2006-11-01

    Full Text Available OBJETIVO: Avaliar criticamente os mais novos anti-histamínicos anti-H1 e os diferentes termos utilizados para denominá-los, com base na revisão de evidências sobre o papel dos anti-H1 no tratamento das doenças alérgicas. FONTES DOS DADOS: Artigos originais, revisões e consensos indexados nos bancos de dados MEDLINE e PUBMED de 1998 a 2006. Palavra chave: anti-histamínicos. SÍNTESE DOS DADOS: Os anti-histamínicos de segunda geração diferenciam-se dos de primeira geração por sua elevada especificidade e afinidade pelos receptores H1 periféricos e pela menor penetração no sistema nervoso central (SNC, com conseqüente redução dos efeitos sedativos. Embora os anti-histamínicos de segunda geração sejam, geralmente, melhor tolerados do que seus predecessores, alguns efeitos adversos, principalmente cardiotoxicidade, surgiram com alguns deles. Nos últimos 20 anos, novos compostos, com diferentes farmacocinéticas, foram sintetizados. A maioria deles manifesta propriedades antiinflamatórias que independem de sua atividade no receptor H1. Aprimoramentos mais recentes, geralmente na forma de metabólitos ativos, levaram ao uso do termo anti-histamínico de terceira geração. Esse termo surgiu espontaneamente, sem uma descrição clara de seu significado e implicações clínicas, criando grande confusão entre os profissionais da saúde. CONCLUSÕES: Com base nas evidências sobre anti-histamínicos anti-H1, nenhum deles pode ser considerado como "anti-histamínico de terceira geração". Para tanto, seria preciso comprovar que a nova classe de anti-histamínicos possui vantagens clínicas distintas sobre os compostos existentes e preenche pelo menos três pré-requisitos: ausência de cardiotoxicidade, de interações medicamentosas e de efeitos sobre o SNC.OBJECTIVE: To perform a critical evaluation of the more recent H1 antihistamines and the various terms used to describe them, based on a review of evidence on their role in

  13. Investigation on U - O - Na, Pu - O - Na and U,Pu - O - Na phase diagrams

    International Nuclear Information System (INIS)

    Pillon, S.

    1989-03-01

    The thermochemical interaction between the nuclear fuel (uranium and plutonium mixed oxides) and the sodium has been investigated and particularly the three phase diagrams: U - O - Na; Pu - O - Na; U,Pu - O - Na. High temperature neutron diffraction, microcalorimetry and powder X-ray diffraction were used for the characterization of the compounds synthetized. This study allowed to complete the knowledge about each of these diagrams and to measure some physical and thermal properties on the compounds. The limits on the modelization of the fuel-sodium interaction are discussed from the results of the UO 2 - Na reaction [fr

  14. Distinct IL-7 signaling in recent thymic emigrants versus mature naïve T cells controls T-cell homeostasis.

    Science.gov (United States)

    Kim, Hye Kyung; Waickman, Adam T; Castro, Ehydel; Flomerfelt, Francis A; Hawk, Nga V; Kapoor, Veena; Telford, William G; Gress, Ronald E

    2016-07-01

    IL-7 is essential for T-cell survival but its availability is limited in vivo. Consequently, all peripheral T cells, including recent thymic emigrants (RTEs) are constantly competing for IL-7 to survive. RTEs are required to replenish TCR diversity and rejuvenate the peripheral T-cell pool. However, it remains unknown how RTEs successfully compete with resident mature T cells for IL-7. Moreover, RTEs express low levels of IL-7 receptors, presumably rendering them even less competitive. Here, we show that, surprisingly, RTEs are more responsive to IL-7 than mature naïve T cells as demonstrated by markedly increased STAT5 phosphorylation upon IL-7 stimulation. Nonetheless, adoptive transfer of RTE cells into lymphopenic host mice resulted in slower IL-7-induced homeostatic proliferation and diminished expansion compared to naïve donor T cells. Mechanistically, we found that IL-7 signaling in RTEs preferentially upregulated expression of Bcl-2, which is anti-apoptotic but also anti-proliferative. In contrast, naïve T cells showed diminished Bcl-2 induction but greater proliferative response to IL-7. Collectively, these data indicate that IL-7 responsiveness in RTE is designed to maximize survival at the expense of reduced proliferation, consistent with RTE serving as a subpopulation of T cells rich in diversity but not in frequency. Published 2016. This article is a U.S. Government work and is in the public domain in the USA.

  15. Downregulation of androgen receptors by NaAsO2 via inhibition of AKT-NF-κB and HSP90 in castration resistant prostate cancer.

    Science.gov (United States)

    Kim, Yunlim; Park, Sang Eun; Moon, Jeong-Weon; Kim, Bong-Min; Kim, Ha-Gyeong; Jeong, In Gab; Yoo, Sangjun; Ahn, Jae Beom; You, Dalsan; Pak, Jhang Ho; Kim, Sujong; Hwang, Jung Jin; Kim, Choung-Soo

    2017-07-01

    Androgen and androgen receptor (AR) play essential roles in the development and maintenance of prostate cancer. The recently identified AR splice variants (AR-Vs) have been considered as a plausible mechanism for the primary resistance against androgen deprivation therapy (ADT) in castration-resistant prostate cancer (CRPC). Sodium meta-arsenite (NaAsO 2 ; KML001; Kominox), a trivalent arsenical, is an orally bioavailable and water soluble, which is currently in phase I/II clinical trials for the treatment of prostate cancer. It has a potent anti-cancer effect on prostate cancer cells and xenografts. The aim of this study was to examine the effect of NaAsO 2 on AR signaling in LNCaP and 22Rv1 CRPC cells. We used hormone-sensitive LNCaP cells, hormone-insensitive 22Rv1 cells, and CRPC patient-derived primary cells. We analyzed anti-cancer effect of NaAsO 2 using real-time quantitative reverse transcription-PCR, Western blotting, immunofluorescence staining and CellTiter Glo® luminescent assay. Statistical evaluation of the results was performed by one-way ANOVA. NaAsO 2 significantly reduced the translocation of AR and AR-Vs to the nucleus as well as their level in LNCaP and 22Rv1 cells. Besides, the level of the prostate-specific antigen (PSA), downstream target gene of AR, was also decreased. This compound was also an effective modulator of AKT-dependent NF-κB activation which regulates AR. NaAsO 2 significantly inhibited phosphorylation of AKT and expression and nuclear translocation of NF-κB. We then investigated the effect of NaAsO 2 on AR stabilization. NaAsO 2 promoted HSP90 acetylation by down-regulating HDAC6, which reduces the stability of AR in prostate cancer cells. Here, we show that NaAsO 2 disrupts AR signaling at multiple levels by affecting AR expression, stability, and degradation in primary tumor cell cultures from prostate cancer patients as well as CRPC cell lines. These results suggest that NaAsO 2 could be a novel therapeutics for prostate

  16. Deficiência de cobre em suínos: caracterização clínico-patológica

    Directory of Open Access Journals (Sweden)

    Karla Moraes Rocha Guedes

    2014-07-01

    Full Text Available São relatados dois casos de deficiência de cobre em suínos (A e B, fêmeas, sem raça definida, de três meses de idade, provenientes de propriedade rural em Planaltina, GO. Os animais apresentavam incoordenação, paresia de membros pélvicos, com progressão para os membros torácicos e andar com flexão da articulação metacarpo-falangeana. Na propriedade de origem dos animais, outros dois suínos apresentavam atrofia da musculatura da coxa e posição sentada quando parados. O rebanho recebia dieta não-balanceada constituída por milho, soro de leite e sobras de lavoura. Na necropsia, não foram observadas alterações significativas, mas histologicamente havia vacuolização periaxonal multifocal no tronco encefálico e na medula espinhal, quantidade discreta de esferoides axonais e macrófagos no interior dos vacúolos. A coloração com azul rápido de luxol (ARL para mielina demonstrou que as áreas de vacuolização caracterizavam focos de desmielinização. Amostras de fígado dos dois suínos apresentaram níveis de cobre muito abaixo do normal, de 13,1 partes por milhão (ppm (suíno A e 5,7ppm (suíno B. Este trabalho descreve dois casos de desmielinização medular e de tronco encefálico devido à deficiência de cobre em suínos jovens.

  17. Peripheral neuropathies in childhood: a neuropathological approach Neuropatias periféricas na infância: uma abordagem neuropatológica

    Directory of Open Access Journals (Sweden)

    Leila Chimelli

    1996-09-01

    Full Text Available Peripheral neuropathies affect children more often than the young and middle age adults, but less frequently than the elderly. They differ from those in the adults because of the high incidence of hereditary neuropathies, including those associated with metabolic and degenerative disorders of the central nervous system; the low incidence of toxic neuropathies and those associated with systemic disorders; and a lower incidence of chronic acquired polineuropathies. Nerve biopsies are indicated if the diagnosis has not been made with clinical and electrophysiologic studies and other methods, and should only be performed in laboratories with appropriate techniques for the study of the nerve. It is important to know the normal development of the nerve, the thickness of the myelin sheath and the distribution of small and large fibers, according to the age. The main morphological aspects of the most frequent neuropathies in children - acquired (inflammatory, demyelinating and hereditary (sensory-motor, sensory-autonomic, ataxic, and those associated with metabolic and degenerative disorders, are reviewed.As neuropatias periféricas afetam as crianças mais frequentemente do que os adultos jovens e de meia idade, mas menos frequentemente do que os mais velhos. Diferem das dos adultos pela alta incidência de neuropatias hereditárias, incluindo as associadas a doenças metabólicas e degenerativas do sistema nervoso central; pela baixa incidência de neuropatias tóxicas e associadas a doenças sistêmicas; e pela menor incidência de polineuropatias crônicas adquiridas. As biópsias de nervo são indicadas se o diagnóstico não for feito com estudos clínicos, eletrofisiológicos e outros métodos de investigação, e só devem ser realizadas em laboratórios que dispõem de técnicas apropriadas para estudo do nervo. É importante conhecer o desenvolvimento do nervo periférico, a espessura da mielina e a distribuição das fibras quanto ao calibre

  18. Morfeia generalizada em uma criança com ictiose arlequim, uma associação rara

    Directory of Open Access Journals (Sweden)

    Maria F.A. Giacomin

    2016-02-01

    Full Text Available Resumo Introdução Ictiose arlequim é uma doença cutânea congênita grave, autossômica e rara, caracterizada por ressecamento excessivo da pele e hiperqueratose. A associação de ictiose com esclerose sistêmica foi descrita em apenas três crianças. Ainda não foi descrito nenhum paciente com morfeia generalizada (MG associada à ictiose arlequim. Relato de caso: Menina de quatro anos e seis meses de idade com diagnóstico de ictiose arlequim baseado em espessamento cutâneo difuso, com fissuras, descamação, eritema e sangramento da lesão desde as primeiras horas de vida. A paciente foi tratada com acitretina (1,0 mg/kg/dia e creme emoliente. Aos três anos e nove meses, desenvolveu contraturas musculares com dor à movimentação e limitação nos cotovelos e joelhos e placas esclerodérmicas difusas no abdômen, nas costas, na região suprapúbica e nas extremidades inferiores. A biópsia de pele mostrou epiderme retificada e hiperqueratose leve, derme reticular com linfócitos, infiltrado mononuclear perivascular e perianexial e esclerose da derme reticular e glândula sudorípara rodeada por um tecido colágeno denso, compatível com esclerodermia. A paciente preencheu os critérios para o subtipo MG. Metotrexato e prednisona foram introduzidos. Aos quatro anos e três meses, apresentou novas lesões esclerodérmicas, associando-se azatioprina à terapêutica anterior, sem resposta após dois meses. Discussão: Um caso de ictiose arlequim associada à MG foi descrito. O tratamento dessas duas condições é um desafio e requer uma equipe multidisciplinar.

  19. Measurement of exchangeable sodium: 22Na or 24Na

    International Nuclear Information System (INIS)

    Smith, T.; Edmonds, C.J.

    1987-01-01

    A case is made for the use of 22 Na in low activities in preference to 24 Na for routine diagnostic estimation of exchangeable sodium, and is based chiefly on considerations of availability, cost and radiation dosimetry. A method in which only 37 kBq (1 μCi) 22 Na is administered orally is shown to be sufficiently accurate and to possess distinct advantages in terms of cost and convenience with a committed radiation dose no greater than that for a measurement using 24 Na. (author)

  20. Specificity of anti-phospholipid antibodies in infectious mononucleosis: a role for anti-cofactor protein antibodies

    Science.gov (United States)

    Sorice, M; Pittoni, V; Griggi, T; Losardo, A; Leri, O; Magno, M S; Misasi, R; Valesini, G

    2000-01-01

    The antigen specificity of anti-phospholipid antibodies in infectious mononucleosis (IM) was studied using ELISA for the detection of anti-β2-glycoprotein I (β2-GPI), anti-annexin V, anti-protein S and anti-prothrombin antibodies and TLC immunostaining for the detection of anti-phospholipid antibodies. This technique enabled us to look at antibodies reacting to ‘pure’ phospholipid antigens in the absence of protein contamination. Sera from 46 patients with IM, 18 with systemic lupus erythematosus (SLE), 21 with primary anti-phospholipid antibody syndrome (PAPS), 50 with Helicobacter pylori infection and 30 healthy blood donors were tested. This study highlights anti-phospholipid antibodies in patients with IM as specific ‘pure’ anti-cardiolipin antibodies, while in PAPS and SLE patients anti-phosphatidylserine and anti-phosphatidylethanolamine antibodies were also found. This investigation also shows that the anti-cardiolipin antibodies found in IM can be present with anti-cofactor protein antibodies. The higher prevalence of anti-cofactor antibodies found in IM sera than in Helicobacter pylori sera may be due to the immunostimulatory effect and/or the polyclonal activation often observed in course of Epstein–Barr virus infection. However, anti-β2-GPI and, to a lesser extent, anti-prothrombin antibodies occur with a significantly lower prevalence in IM than in PAPS patients. This finding suggests that these antibodies should be regarded as the expression of the broad autoimmune syndrome involving the phospholipid-binding plasma proteins. PMID:10792380

  1. Measurement of surface phonon dispersion relations for LiF, NaF, and KCl through energy-analysed inelastic scattering of a helium atomic beam

    International Nuclear Information System (INIS)

    Doak, R.B.

    1981-01-01

    A crystal surface terminates abruptly one dimension of lattice periodicity, constituting a lattice defect with concomitant localized modes of vibration, termed surface phonons. Such surface phonons have previously been investigated in the long wavelength, non-dispersive regime. The present work reports the first observation of surface phonons in the short wavelength, dispersive range. The data allow for the first time a surface phonon dispersion curve to be plotted completely from origin to edge of the surface Brillouin zone. Measurements were made of phonons along the (anti GAMMA anti M) and (anti GAMMA anti X) azimuths of the LiF(001) surface and along the azimuth of NaF(001) and KC1(001) surfaces. The results are in substantial agreement with theoretical predictions, although for LiF the measured Rayleigh dispersion curve at M lies appreciably below the theoretical value, possibly reflecting the effects of surface relaxation. (orig.)

  2. Suppression of Na interstitials in Na-F codoped ZnO

    Science.gov (United States)

    Huo, Wenxing; Mei, Zengxia; Tang, Aihua; Liang, Huili; Du, Xiaolong

    2018-04-01

    Controlling the formation of interstitial Na (Nai) self-compensating defects has been a long-term physics problem for effective Na doping in ZnO. Herein, we present an experimental approach to the suppression of Nai defects in ZnO via Na and F codoping under an oxygen-rich condition during the molecular beam epitaxy growth process. It is found that the incorporation of such large numbers of Na and F dopants (˜1020 cm-3) does not cause an obvious influence on the lattice parameters. Hall-effect measurements demonstrate that F doping efficiently raises the Fermi level (EF) of ZnO films, which is expected to make the formation energy of Nai and NaZn increase and decrease, respectively. Most of the Na atoms occupy the substitutional Zn sites, and the formation of Nai is suppressed consequently. Secondary ion mass spectrometry measurements reveal that F and Na atoms are tightly bonded together due to their strong Coulomb interaction. The enhanced deep level emission (DLE) in ZnO:Na-F is ascribed to the considerable amount of isolated Zn vacancy (VZn) defects induced by the elevated EF and the formation of neutral (" separators="| FO + - Na Zn - ) 0 complexes. On the other hand, formation of (" separators="| FO + - VZn 2 - ) - complexes in ZnO:F exhausts most of the isolated Zn vacancies, leading to the disappearance of the DLE band.

  3. Anti-inflammatory and anti-oxidant activities of Secamone afzelii ...

    African Journals Online (AJOL)

    . This study re-ports the anti-inflammatory and antioxidant properties of S. afzelii. The anti-inflammatory activity was determined by the carrageenan-induced paw oedema method in 7 day old chicks and antioxi-dant property by the 2 ...

  4. OGLAŠEVANJE NA DRUŽBENIH OMREŽJIH NA PRIMERU FACEBOOKA

    OpenAIRE

    Novak, Martina

    2012-01-01

    V diplomskem delu obravnavamo družbene medije kot novo priložnost za promocijo in oglaševanje podjetij. Spoznali smo družbena omrežja na splošno in nekaj teh, ki jih uporabljamo tudi v Sloveniji na kratko predstavili. Podrobneje smo se osredotočili na družbeno omrežje Facebook, predvsem na samo spletno stran, njen izgled in storitve, ki jih ponuja uporabnikom. V nalogi je podrobneje opisan Facebook kot orodje za uporabo oglaševanja. Spoznali smo brezplačne in plačljive načine promocije in ogl...

  5. The Meaning of Anti-Americanism: A Performative Approach to Anti-American Prejudice

    Directory of Open Access Journals (Sweden)

    Felix Knappertsbusch

    2013-06-01

    Full Text Available A contribution to the ongoing debate on how anti-Americanism can be adequately conceptualized and how such prejudice can be distinguished from legitimate criticism, arguing that part of these conceptual problems arise from a too narrow focus on defining anti-Americanism and the use of standardized empirical operationalizations. Such approaches exhibit severe limitations in grasping the flexibility of the phenomenon in everyday discourse and often underestimate or ignore the interpretive aspect involved in identifying utterances as anti-American prejudice. Alternatively, a performative approach is proposed, understanding anti-Americanism as a network of speech acts bound by family resemblance rather than identical features. In combination with qualitative empirical research methods such a conceptualization is especially suited to account for the flexible, situated use of anti-American utterances. At the same time it grants reflexivity to the research concept, in the sense of a close description of the scientific application of the notion of anti-Americanism. Two empirical examples from an interview study on anti-American speech in Germany illustrate the potential of such an approach, providing an insight into how anti-Americanism is incorporated into the construction and expression of racist and revisionist national identifications in everyday discourse.

  6. Na+,K+-ATPase Na+ affinity in rat skeletal muscle fiber types

    DEFF Research Database (Denmark)

    Kristensen, Michael; Juel, Carsten

    2010-01-01

    Previous studies in expression systems have found different ion activation of the Na(+)/K(+)-ATPase isozymes, which suggest that different muscles have different ion affinities. The rate of ATP hydrolysis was used to quantify Na(+),K(+)-ATPase activity, and the Na(+) affinity of Na(+),K(+)-ATPase...

  7. Impact of leptonic tau decays on the distribution of anti B → Dμ anti ν

    Energy Technology Data Exchange (ETDEWEB)

    Bordone, Marzia; Isidori, Gino; Dyk, Danny van [Physik-Institut, Universitaet Zuerich, Winterthurer Strasse 190, 8057 Zuerich (Switzerland)

    2016-07-01

    We present results for the decay rate of anti B → Dτ(→ μ anti νν) anti ν, which is a sizeable background to anti B → Dμ anti ν decays. In particular, we calculate analytically the differential decay rate with respect to all seven kinematic variables. We consider the impact of this decay on the distributions of anti B → Dμ anti ν in either the muon helicity angle or the muon energy in the anti B rest frame. Our numerical results are obtained from Monte Carlo pseudo events. Finally, we provide necessary information for cross checks of the experimental analyses.

  8. Synthesis and characterization of anti-bacterial and anti-fungal citrate-based mussel-inspired bioadhesives

    Science.gov (United States)

    Guo, Jinshan; Wang, Wei; Hu, Jianqing; Xie, Denghui; Gerhard, Ethan; Nisic, Merisa; Shan, Dingying; Qian, Guoying; Zheng, Siyang; Yang, Jian

    2016-01-01

    Bacterial and fungal infections in the use of surgical devices and medical implants remain a major concern. Traditional bioadhesives fail to incorporate anti-microbial properties, necessitating additional anti-microbial drug injection. Herein, by the introduction of the clinically used and inexpensive anti-fungal agent, 10-undecylenic acid (UA), into our recently developed injectable citrate-based mussel-inspired bioadhesives (iCMBAs), a new family of anti-bacterial and anti-fungal iCMBAs (AbAf iCs) was developed. AbAf iCs not only showed strong wet tissue adhesion strength, but also exhibited excellent in vitro cyto-compatibility, fast degradation, and strong initial and considerable long-term anti-bacterial and anti-fungal ability. For the first time, the biocompatibility and anti-microbial ability of sodium metaperiodate (PI), an oxidant used as a cross-linking initiator in the AbAf iCs system, was also thoroughly investigated. Our results suggest that the PI-based bioadhesives showed better anti-microbial properties compared to the unstable silver-based bioadhesive materials. In conclusion, AbAf iCs family can serve as excellent anti-bacterial and anti-fungal bioadhesive candidates for tissue/wound closure, wound dressing, and bone regeneration, especially when bacterial or fungal infections are a major concern. PMID:26874283

  9. Crystal structure of Na+, K(+)-ATPase in the Na(+)-bound state.

    Science.gov (United States)

    Nyblom, Maria; Poulsen, Hanne; Gourdon, Pontus; Reinhard, Linda; Andersson, Magnus; Lindahl, Erik; Fedosova, Natalya; Nissen, Poul

    2013-10-04

    The Na(+), K(+)-adenosine triphosphatase (ATPase) maintains the electrochemical gradients of Na(+) and K(+) across the plasma membrane--a prerequisite for electrical excitability and secondary transport. Hitherto, structural information has been limited to K(+)-bound or ouabain-blocked forms. We present the crystal structure of a Na(+)-bound Na(+), K(+)-ATPase as determined at 4.3 Å resolution. Compared with the K(+)-bound form, large conformational changes are observed in the α subunit whereas the β and γ subunit structures are maintained. The locations of the three Na(+) sites are indicated with the unique site III at the recently suggested IIIb, as further supported by electrophysiological studies on leak currents. Extracellular release of the third Na(+) from IIIb through IIIa, followed by exchange of Na(+) for K(+) at sites I and II, is suggested.

  10. Características testiculares de touros imunizados com vacina anti-hormônio liberador do hormônio luteinizante Testicular characteristics of bulls immunosterilized with anti-luteinizing hormone-releasing hormone vaccine

    Directory of Open Access Journals (Sweden)

    Ricardo Zanella

    2009-10-01

    Full Text Available O objetivo deste trabalho foi avaliar a ação imunoesterilizadora de uma vacina anti-hormônio liberador de hormônio luteinizante (LHRH, composta por ovalbumina-LHRH-7 e tiorredoxina-LHRH-7, em touros mestiços Nelore. Vinte e seis touros, com dois anos de idade, foram distribuídos aleatoriamente em dois grupos de 13 animais. No grupo I, os animais receberam uma dose e dois reforços da vacina nos dias 0, 141, e 287 do experimento. No grupo II, os animais não receberam nenhum tratamento (controle. Para avaliar o efeito da vacina nos touros, foi realizada a mensuração da circunferência escrotal no início do experimento e no dia do abate, 741 dias depois. Por ocasião do abate, também foi coletada uma amostra dos testículos para avaliação histológica. O grupo imunizado apresentou circunferência escrotal ao abate de 22±5,98 cm, menor do que a do grupo controle que foi de 35,6±2,4 cm. Na análise histológica dos animais do grupo imunizado, foi observada degeneração testicular com ausência de espermatozoides em 85% dos animais avaliados, os outros 15% apresentaram redução no número de espermatozoides, em comparação aos animais do grupo controle. A vacina anti-LHRH, com fusão de proteínas, é efetiva na castração imunológica de touros e deve ser considerada como alternativa para utilização na produção bovina extensiva no Brasil.The objective of this study was to evaluate the immunosterilization action of the anti-luteinizing hormone-releasing hormone (LHRH vaccine, composed with ovalbumin-LHRH-7 and thioredoxin-LHRH-7, in Nelore-cross bulls. Twenty-six 2-year old bulls were randomly assigned in two groups of 13 animals each. The animals of group I received a primary and two booster injections of the vaccine on days 0, 141, and 287 of the experiment. In group II, the control group, the bulls did not receive any type of treatment. Scrotal circumference was measured in the beginning of the experiment and at slaughter

  11. Cu and Zn substituted silicon clathrates with the cubic type-II structure. Synthesis and characterization of Cs{sub 8}Na{sub 16}Cu{sub 3.8}Si{sub 132.2} and Cs{sub 8}Na{sub 16}Zn{sub 6.9}Si{sub 129.1}

    Energy Technology Data Exchange (ETDEWEB)

    Schaefer, Marion C.; Bobev, Svilen [Department of Chemistry and Biochemistry, University of Delaware, Newark, DE (United States)

    2017-12-13

    Studies in the systems Cs-Na-Cu-Si and Cs-Na-Zn-Si yielded the novel clathrates Cs{sub 8}Na{sub 16}(Cu,Si){sub 136} and Cs{sub 8}Na{sub 16}(Zn,Si){sub 136}, both with the cubic type-II structure [space group Fd anti 3m (no. 227), Pearson symbol cF160]. The structures of the title compounds were established from single-crystal X-ray diffraction methods, confirming the complete ordering of the Cs and Na guest atoms. The framework-building Si atoms are found to be randomly substituted by Cu atoms on framework site 96g, exclusively. In the structure of Cs{sub 8}Na{sub 16}(Zn,Si){sub 136}, the refinements indicate that the Zn and Si atoms co-occupy two of the three framework sites with notable preference for site 96g over site 32e. The corresponding refined compositions and unit cell parameters are as follows: Cs{sub 8}Na{sub 16}Cu{sub 3.8}Si{sub 132.2(1)} [a = 14.7583(15) Aa]; Cs{sub 8}Na{sub 16}Zn{sub 6.9}Si{sub 129.1(1)} [a = 14.7682(5) Aa], respectively. The type-II clathrates can be obtained only from experiments employing both Na and Cs, whereas work in the ternary Cs-Cu-Si, Cs-Zn-Si, Na-Cu-Si, and Na-Zn-Si systems failed to yield any clathrate phases. At the same conditions, exploratory studies in the K-Zn-Si and Rb-Zn-Si systems provided evidence that type-I clathrates are favored. (copyright 2017 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

  12. Stiff person syndrome associated anti-amphiphysin antibodies reduce GABA associated [Ca(2+)]i rise in embryonic motoneurons.

    Science.gov (United States)

    Geis, C; Beck, M; Jablonka, S; Weishaupt, A; Toyka, K V; Sendtner, M; Sommer, C

    2009-10-01

    Autoantibodies to the synaptic protein amphiphysin play a crucial pathogenic role in paraneoplastic stiff-person syndrome. Impairment of GABAergic inhibition is the presumed pathophysiological mechanism by which these autoantibodies become pathogenic. Here we used calcium imaging on rat embryonic motor neurons to investigate whether antibodies to amphiphysin directly hinder GABAergic signaling. We found that the immunoglobulin G fraction from a patient with stiff-person syndrome, containing high titer antibodies to amphiphysin and inducing stiffness in rats upon passive transfer, reduced GABA-induced calcium influx in embryonic motor neurons. Depletion of the anti-amphiphysin fraction from the patient's IgG by selective affinity chromatography abolished this effect, showing its specificity for amphiphysin. Quantification of the surface expression of the Na(+)/K(+)/2Cl(2-) cotransporter revealed a reduction after incubation with anti-amphiphysin IgG, which is concordant with a lower intracellular chloride concentration and thus impairment of GABA mediated calcium influx. Thus, anti-amphiphysin antibodies exert a direct effect on GABA signaling, which is likely to contribute to the pathogenesis of SPS.

  13. PROSPECÇÃO TECNOLÓGICA: PROTETORES SOLARES ANTI UVA E ANTI UVB

    Directory of Open Access Journals (Sweden)

    Douglas Dourado Oliveira

    2014-03-01

    Full Text Available Com o aumento da temperatura no planeta devido o efeito estufa, há uma preocupação com as radiações ultravioletas que incidem na pele dos seres humanos. Diante disso a indústria cosmética vem desenvolvendo constantemente formulações contendo filtros solares, anti UVA, anti UVB e também os dois filtros associados numa mesma formulação, retardando o envelhecimento cutâneo, formação dos radicais livres e prevenindo uma grande problemática atual, o câncer de pele. O objetivo deste trabalho foi realizar uma prospecção para conhecimento do desenvolvimento científico e tecnológico relacionado à aplicação de filtros solares associados em uma mesma formulação baseando-se no número de patentes depositadas e de artigos publicados. A prospecção foi realizada no Banco Europeu de Patentes (EPO, no Banco Americano de Marcas e Patentes (USPTO e no Banco de dados do Instituto Nacional de Propriedade Industrial do Brasil (INPI, bem como nas bases de periódicos, CAPES, Pubmed, Science Direct e ACS Publications. O maior número de patentes foi depositado nos últimos 5 anos. As patentes em sua maioria estão classificadas em A61K. Os responsáveis por maior número de patentes foram os Estados Unidos, China e Japão. Há uma diminuição no número de depósitos de patentes quando se associou a UVA e UVB no fotoprotetor. Em relação à produção científica o número de publicações referente a formulações fotoprotetoras contendo os dois filtros associados é maior que o de depósito de patentes, porém segue o mesmo perfil de redução ao associar os filtros numa mesma formulação.

  14. Biological activities (anti-inflammatory and anti-oxidant) of fractions ...

    African Journals Online (AJOL)

    Biological activities (anti-inflammatory and anti-oxidant) of fractions and methanolic extract of Philonotis hastate (Duby Wijk & MargaDant). ... The fractions and methanolic extract exhibited moderate antioxidant potentials with various models. The flavonoid contents of the methanol extract and fractions ranged between 1.70 ...

  15. Experimental Study on Anti-body effects of Anti-BV on the Bee Venom Herbal Acupuncture

    Directory of Open Access Journals (Sweden)

    Ki Rok Kwon

    2005-02-01

    Full Text Available Objectives : To observe physiological anti-body effects of anti-BV, acute toxic response, measurement of LD50, and the effects of anti-body were evaluated. Methods : LD50 of Anti-Bee Venom were measured, and to analyze acute toxic responses, weight, and the anti-body effects various concentrations of Anti-BV were diluted and the survival rate was measured. Cell blood count (CBC, liver, spleen, and kidney pathologies were observed from the histological aspects. Results : Experiment was conducted to observe Anti-BV as the anti-body to the bee venom and the following results were obtained: 1. Anti-BV was injected intraperitoneally and no toxic responses were witnessed. All of the experiment subjects stayed alive during the experiment, making LD50 analysis impossible. 2. Anti-BV was injected intraperitoneally in mice and no significant weight changes were measured between the control group and the experiment groups. 3. Measuring the concentration dependent survival rate, the highest survival rate was at the concentration of 1.25×102mg/kg(1/2.000 for Anti-BV. 4. No particular results were shown in the CBC test. 5. Observation of changes in the organ tissues, Anti-BV was found to suppress blood stasis in the liver and inhibit necrosis of the cells. Conclusion : Above results suggest that Anti-BV doesn't cause any toxic responses in the body and works as an anti-body to the bee venom. Further studies must be followed to secure the findings.

  16. Anti-idiotypes against a monoclonal anti-haloperidol antibody bind to dopamine receptor

    International Nuclear Information System (INIS)

    Elazar, Z.; Kanety, H.; Schreiber, M.; Fuchs, S.

    1988-01-01

    Anti-idiotypic antibodies were raised in rabbits by immunization with a monoclonal anti-haloperidol antibody. Some of these anti-idiotypic antibodies bind in a concentration dependent manner to bovine striatal membranes. Following affinity purification, these antibodies inhibit haloperidol binding to striatal membranes and deplete [ 3 H]-spiperone binding sites from a solubilized preparation of striatal membranes. It is thus concluded that these anti-idiotypic antibodies are an internal image of haloperidol and as such can interact with D 2 -dopamine receptors

  17. Photon anti bunching versus phantom anti bunching?

    International Nuclear Information System (INIS)

    Miranowicz, A.; Ekert, A.; Ekert, A.; Bajer, J.; Leonski, W.

    1997-01-01

    Photon anti bunching defined by two-time correlation functions has hitherto, to our best knowledge, been considered to constitute a unique, well defined effect. We show explicitly that this is by no means the case. We analyze two of the most famous definitions showing that both anti bunching and bunching effects according to one definition can be accompanied by arbitrary photon correlation effects according to another. As an example we discuss a model of parametric frequency conversion. (authors)

  18. Analgesic, anti-inflammatory and anti-platelet activities of Buddleja crispa.

    Science.gov (United States)

    Bukhari, Ishfaq A; Gilani, Anwar H; Meo, Sultan Ayoub; Saeed, Anjum

    2016-02-25

    Buddleja crispa Benth (Buddlejaceae) is a dense shrub; several species of genus Buddleja have been used in the management of various health conditions including pain and inflammation. The present study was aimed to investigate the analgesic, anti-inflammatory and anti-platelet properties of B. crispa. Male rats (220-270 gm,) and mice (25-30 gm) were randomly divided into different groups (n = 6). Various doses of plant extract of B. crispa, its fractions and pure compounds isolated from the plant were administered intraperitoneally (i.p). The analgesic, anti-inflammatory and anti-platelet activities were assessed using acetic acid and formalin-induced nociception in mice, carrageenan-induced rat paw edema and arachidonic acid-induced platelets aggregation tests. The intraperitoneal administration of the methanolic extract (50 and 100 mg/kg), hexane fraction (10 and 25 mg/kg i.p) exhibited significant inhibition (P < 0.01) of the acetic acid-induced writhing in mice and attenuated formalin-induced reaction time of animals in second phase of the test. Pure compounds BdI-2, BdI-H3 and BH-3 isolated from B. crispa produced significant (P < 0.01) analgesic activity in acetic acid-induced and formalin tests. The crude extract of B. crispa (50-200 mg/kg i.p.) and its hexane fraction inhibited carrageenan-induced rat paw edema with maximum inhibition of 65 and 71% respectively (P < 0.01). The analgesic and anti-inflammatory effect of the plant extract and isolated pure compounds were comparable to diclofenac sodium. B. crispa plant extract (0.5-2.5 mg/mL) produced significant anti-platelet effect (P < 0.01) with maximum inhibition of 78% at 2.5 mg/ml. The findings from our present study suggest that B. crispa possesses analgesic, anti-inflammatory and anti-platelet properties. B. crispa could serve a potential novel source of compounds effective in pain and inflammatory conditions.

  19. Meltability in system of K2TaF7-NaF-NaCl-KCl

    International Nuclear Information System (INIS)

    Kartsev, V.E.; Kovalev, F.V.; Korshunov, B.G.

    1975-01-01

    Thermographic and visual-polythermal techniques were used to study the meltability in K 2 TaF 7 -NaF-NaCl-KCl system. The tetrahedron-forming sections NaF-NaCl-K 2 TaF 7 xKCl and NaF-K 2 TaF 7 xKCl-2K 2 TaF 7 xNaCl divide the concentration tetrahedron into three particular tetrahedra: NaF-K 2 TaF 7 xKCl-2K 2 TaF 7 xNaCl-K 2 TaF 7 , NaF-NaCl-K 2 TaF 7 xKCl-2K 2 TaF 7 xaCl, and NaF-NaCl-KCl-K 2 TaF 7 xKCl. Non-variant equilibrium points in all of the particular four-component systems have been determined

  20. Polysaccharides from Sargassum thunbergii: Monthly variations and anti-complement and anti-tumour activities.

    Science.gov (United States)

    Jin, Weihua; Liu, Ge; Zhong, Weihong; Sun, Chaomin; Zhang, Quanbin

    2017-12-01

    Monthly variations of polysaccharides from Sargassum thunbergii and their anti-complement and anti-tumour activities were investigated. It was observed that an increase in fucose and total sugar contents occurred during the growth period (from early April to mid-June), accompanied by a decrease in molar ratios of other monosaccharides to fucose. The highest yields were obtained from early July to early September, which was in accordance with the significant increase in molar ratio of glucose to fucose and decrease in molar ratio of other monosaccharides to fucose. And the above results suggested that S. Thunbergii synthesized large amount of laminaran, the storage substance of brown algae, during the senescence period. However, sulfate contents were relatively stable in the life cycle of S. thunbergii. These results suggested that S. thunbergii synthesized complex sulfated heteropolysacchairdes during inactive period, while during other periods, it synthesized more sulfated galactofucan. All polysaccharides showed anti-complement activity, suggesting that the harvesting time did not influence the anti-complement activities. In the anti-tumour assay in vitro, the polysaccharides taken during the senescence period had much lower anti-tumour activity, suggesting that fucoidan, but not laminaran, determined the anti-tumour activities. Therefore, polysaccharides from S. thunbergii might have great potential in anti-complement and anti-tumour application. Copyright © 2017 Elsevier B.V. All rights reserved.

  1. The NA62 rare Kaon decay experiment Photon Veto System

    International Nuclear Information System (INIS)

    Perfetto, F.

    2009-01-01

    The NA62 experiment at CERN SPS is aimed at measuring the rare decay K + →π + νν-bar. This poses very stringent requirements on the particle identification capabilities of the apparatus in order to reject the overwhelming K + →μ + ν and K + →π + π 0 background. In particular, a π 0 rejection at level of 10 -8 is needed to complement the kinematical rejection of π + π 0 events. In order to have a full acceptance from 0 to 50 mrad, partly covered by NA48 liquid Kripton calorimeter, a set of veto anti-counters should be placed along the vacuum decay tank, to catch large angle photons with a detection efficiency better than 10 -4 in a wide energy range: from few hundreds MeV to 35 GeV. Intense R and D programs have been carried out in order to study different technological solutions: a lead-scintillating fibers calorimeter, lead-scintillator sandwich calorimeter and finally an original re-use of the existing barrel of the OPAL lead-glass electromagnetic calorimeter. We present the results on detector performances and compare the three solutions.

  2. Envolvimento renal na salmonelose septicêmica prolongada

    Directory of Open Access Journals (Sweden)

    Edgar Carvalho Filho

    1977-10-01

    Full Text Available Numa análise de 68 pacientes com o diagnóstico de salmonelose septicêmica prolongada (doentes com a forma hépato-esplênica da esquistossomose mansônica, e bactérias do gênero Salmonella isoladas do sangue, demonstrou-se que 28 deles (41,2% apresentaram, concomitantemente, proteinúria e alterações significantes do sedimento urinário (hematúria, leucocitúria e cilindrúria. Destes doentes 3 apresentaram quadro de síndrome nefrótica e quatro se apresentaram urêmicos. Em 10 doentes foi realizado estudo histológico dos rins, havendo em 5, glomerulonefrite proliferativo membranoss, em 2 esclerose glomerular focal, 1 paciente apresentou glomerulonefrite proliferativa mesangial e um apenas alterações histológicas mínimas. Infecção do trato urinário por Salmonella (a mesma isolada do sangue foi observada em 3 casos. A ocorrência do mesmo padrão histológico de alteração glomerular observado na glomerulopatia da esquistossomose sugeriu que o principal determinante da lesão glomerular foi, provavelmente, a infecção por S. mandoni. A elevada prevalência de alterações urinárias, em muitos casos desaparecendo com o tratamento da salmonelose, sugeriu que a infecção bacteriana contribuiu para o aparecimento das manifestações clínicas da nefropatia provavelmente através mecanismo imunológico. O achado de nefrite intersticial mais freqüente e intensa nestes casos do que naqueles apenas com esquistossomose também sugere uma peculiaridade desta condição provavelmente de natureza imunológica.In a study of 68 cases of prolonged salmonella bacteremia (patientes with hepatosplenic schistosomiasis mansoni and bacteremia due to a Salmonella sp, 28 of them (41,2%j showed proteinúria and alterations of the urinary sediment (hematuria, leucocyturia and casts. Three of these patientes presented with a nephrotic syndrome and 4 of them had high blood urea leveis. Kidney histology was obtained in nine cases, showing membrano

  3. [Anti-angiogenic drugs].

    Science.gov (United States)

    Sato, Yasufumi

    2010-06-01

    Angiogenesis or neovascularization, the formation of neo-vessels, is a physiological phenomenon endued in vasculature, but is involved in various pathological conditions. Angiogenesis is required for tumor growth and metastasis, and thus constitutes an important target for the control of tumor progression. Indeed, the recent development of bevacizumab, a neutralizing anti-VEGF monoclonal antibody as the first anti-angiogenic drug, legalized the clinical merit of anti-angiogenesis in cancers. Thereafter, various drugs targeting VEGF-mediated signals have been developed to control tumor angiogenesis. Thus, anti-angiogenic drugs are now recognized in the clinic as a major step forward for the treatment of cancers. This review focuses on the current status of antiangiogenesis treatment in cancers.

  4. Efeito da equoterapia na estabilidade postural de portadores de esclerose múltipla: estudo preliminar Efecto de la hipoterapia en la estabilidad postural de portadores de esclerosis múltiple: estudio preliminar Effect of hippotherapy on the postural stability of patients with multiple sclerosis: a preliminary study

    Directory of Open Access Journals (Sweden)

    Karla Mendonça Menezes

    2013-03-01

    Full Text Available OBJETIVO: Este estudo se propôs a verificar se a estimulação por meio da equoterapia é capaz de desencadear alterações no controle postural de portadores de esclerose múltipla (EM. MÉTODO: Fizeram parte deste estudo 11 portadores de EM divididos em Grupo Intervenção (GI e Grupo Controle (GC. O GI foi inserido num programa de hipoterapia durante 4 meses, sendo conduzidas 2 sessões semanais com duração de 50 minutos cada. A estabilidade postural foi avaliada utilizando uma plataforma de força (para calcular o deslocamento do centro de pressão (COP, durante 30 segundos, em postura ereta quasi-estática, com olhos abertos e fechados, antes e após o treinamento com equoterapia. O tratamento estatístico foi feito através do ANOVA e Post hoc de Tukey com pOBJETIVO: El objetivo de éste estudio fue identificar los efectos de la hipoterapia sobre el control postural en pacientes con esclerosis múltiple (EM. MÉTODO: Hicieron parte de este estudio 11 portadores de EM divididos en Grupo Intervención (GI y Grupo Control (GC. El GI fue insertado en un programa de hipoterapia durante cuatro meses, siendo realizadas dos sesiones semanales con duración de 50 minutos cada una. La estabilidad postural fue evaluada utilizando una plataforma de fuerza (para calcular el desplazamiento del centro de presión (COP, durante 30 segundos en postura erecta casi-estática, con ojos abiertos y cerrados, antes y después del entrenamiento con hipoterapia. El tratamiento estadístico fue realizado a través de ANOVA y Post hoc de Tukey con pOBJECTIVE: This study intended to identify the effects of hippotherapy on the postural control of multiple sclerosis (MS patients. METHODS: Eleven MS patients were separated into two groups: Intervention Group (IG and Control Group (CG. Hippotherapy consisted of two 50-minute sessions each week for four months. Postural stability was evaluated before and after hippotherapy using a force plate to calculate the center of

  5. Active transport of Na/sup +/ by reconstituted Na,K-ATPase

    Energy Technology Data Exchange (ETDEWEB)

    Boldyrev, A.A.; Svinukhova, I.A.

    1987-02-20

    The ability of ATP, CTP, ITP, GTP, and UTP to support ouabain-sensitive accumulation of Na/sup +/ by proteoliposomes with a reconstituted Na/K-pump was investigated. At a low (Na/sup +/)/(K/sup +/) ratio in the medium (20 mM/50 mM), a correlation is observed between the proton-accepting capacity of the nucleotide and its effectiveness as a substrate of active transport. To test the hypothesis of the importance of the presence of a negative charge in the 1-position of the purine (3-pyrimidine) base of the nucleotide for mutual transitions between the Na- and K-conformations of Na,K-ATPase they used two analogs of ATP: N/sub 1/-hydroxy-ATP, possessing proton acceptor capacity, and N/sub 1/-methoxy-ATP, in the molecule of which the negative charge is quenched by a methyl group. The first substrate supports active accumulation of Na/sup +/ in proteoliposomes at the same rate as ATP, whereas the second substrate is relatively ineffective.

  6. Measurement of b anti b correlations at the CERN p anti p collider

    International Nuclear Information System (INIS)

    Albajar, C.; Ankoviak, K.; Bartha, S.; Bezaguet, A.; Boehrer, A.; Bos, K.; Buchanan, C.; Buschbeck, B.; Castilla-Valdez, H.; Cennini, P.; Cittolin, S.; Clayton, E.; Cline, D.; Caughlan, J.A.; Dau, D.; Daum, C.; Della Negra, M.; Demoulin, M.; Denegri, D.; Dibon, H.; Dorenbosch, J.; Dowell, J.D.; Eggert, K.; Eisenhandler, E.; Ellis, N.; Evans, H.; Faissner, H.; Fensome, I.F.; Fortson, L.; Garvey, J.; Geiser, A. Givernaud, A.; Gonidec, A.; Gonzalez, B.; Gronberg, J.; Holthuizen, D.J.; Jank, W.; Jorat, G.; Kalmus, P.I.P.; Karimaeki, V.; Kenyon, I.; Kinnunen, R.; Krammer, M.; Lammel, S.; Landon, M.P.J.; Lemoigne, Y.; Levegruen, S.; Lipa, P.; Markou, C.; Markytan, M.; Maurin, G.; McMahon, S.; Merlo, J.P.; Meyer, T.; Moers, T.; Mohammadi, M.; Morsch, A.; Moulin, A.; Norton, A.; Otwinowski, S.; Pancheri, G.; Pietarinen, E.; Pimiae, M.; Placci, A.; Porte, J.P.; Priem, R.; Prosi, R.; Radermacher, E.; Rauschkolb, M.; Reithler, H.; Revol, J.P.; Robinson, D.; Rubbia, C.; Samyn, D.; Schinzel, D.; Schleichert, R.; Schroeder, M.; Seez, C.; Shah, T.P.; Sphicas, P.; Sumorok, K.; Szoncso, F.; Tan, C.H.; Taurok, A.; Taylor, L.; Tether, S.; Teykal, H.; Thompson, G.; Tuchscherer, H.; Tuominiemi, J.; Van de Guchte, W.; Van Dijk, A.; Vargas, M.; Virdee, T.S.; Schlippe, W. von; Vuillemin, V.; Wacker, K.; Wagner, H.; Walzel, G.; Wulz, C.E.; Zotto, P.; NIKHEF-H, Amsterdam; Birmingham Univ.; CERN, Geneva; Helsinki Univ.; Kiel Univ.; Blackett Lab., Imperial Coll., London; Queen Mary and Westfield Coll., London; MIT, Cambridge, MA; Rutherford Appleton Lab., Chilton; DPHPE/SEPh, CEN Saclay, Gif-sur-Yvette; California Univ., Los Angeles, CA; Oesterreichische Akademie der Wissenschaften, Vienna

    1994-01-01

    We report on measurements of correlated b anti b production in p anti p at √s=630 GeV, using dimuon data to tag both the b and anti b quarks. Starting from an inclusive dimuon sample we obtain improved cross-sections for single inclusive beauty production and confirm our earlier results on B 0 - anti B 0 mixing. From a study of b anti b correlations we derive explicit cross-sections for semi-differential b anti b production. We compare the measured cross-sections and correlations to OMIKRON (α s 3 ) QCD predictions and find good quantitative agreement. From the measured angular distributions we establish a sizeable contribution from higher order QCD processes with a significance of about seven standard deviations. A large nonperturbative contribution to these higher order corrections is excluded. (orig.)

  7. ANTI-MICROBIAL AND ANTI-AMOEBIC ACTIVITY SOME AZOMETHINES - POTENTIAL TEXTILE DYESTUFFS

    Directory of Open Access Journals (Sweden)

    DJORDJEVIC Dragan

    2016-05-01

    Full Text Available In this paper, new synthesized three azomethine derivatives applied in dyeing textiles checking the anti-microbial properties of active components, at the same time [1-3]. The emphasis is thrown on the verification of anti-microbial properties that are important for obtaining textile with significantly improved performance. All compounds were characterized and evaluated for their anti-microbial activity against 7 pathogenic bacteria, 1 parasitic protozoan and 1 fungus. It estimated anti-bacterial activity in vitro against the following microorganisms Staphylococcus aureus, Bacillus anthracis, Streptococcus faecalis, Enterobacter sp., Escherichia coli, Pseudomonas aeruginosa, Proteus mirabilis, and Candida albicans. The anti-amoebic activity in vitro was evaluated against the HM1: IMSS strain of Entamoeba histolytica and the results were compared with the standard drug, metronidazole. The synthesized azomethines, showed very good substantivity for wool fibers, gave fine coloring, with good degree of exhaustion after dyeing. The combination of extended synthetic analogues of natural molecules leads to discovery of chemical entities which might be excellent anti-microbial and anti-amoebic compounds as depicted in our results. Being highly the effects this compound can be explored in future as an option for decreasing pathogenic potential of infecting from different sources. Azomethines containing hydrazone (dyestuff 1 and phenylhydrazone (dyestuff 2 as moiety show average yield and moderate inhibition activity while azomethines containing thiosemicarbazone (dyestuff 3 as moiety show higher yield and greater inhibition activity towards gram-negative and gram-positive bacteria as well as a fungus.

  8. Anti-carbamylated Protein Antibody Levels Correlate with Anti-Sa (Citrullinated Vimentin) Antibody Levels in Rheumatoid Arthritis.

    Science.gov (United States)

    Challener, Gregory J; Jones, Jonathan D; Pelzek, Adam J; Hamilton, B JoNell; Boire, Gilles; de Brum-Fernandes, Artur José; Masetto, Ariel; Carrier, Nathalie; Ménard, Henri A; Silverman, Gregg J; Rigby, William F C

    2016-02-01

    The presence of anticitrullinated protein antibodies (ACPA) in rheumatoid arthritis (RA) indicates a breach in immune tolerance. Recent studies indicate that this breach extends to homocitrullination of lysines with the formation of anti-carbamylated protein (anti-CarP) antibodies. We analyzed the clinical and serologic relationships of anti-CarP in 2 RA cohorts. Circulating levels of immunoglobulin G anti-CarP antibodies were determined by ELISA in established (Dartmouth-Hitchcock Medical Center) and early (Sherbrooke University Hospital Center) cohorts and evaluated for anticyclic citrullinated peptide antibodies (anti-CCP), specific ACPA, and rheumatoid factor (RF) levels using the Student t test and correlation analysis. We identified elevated anti-CarP antibodies titers in 47.0% of seropositive patients (Dartmouth, n = 164), with relationships to anti-CCP (p < 0.0001) and IgM-RF (p = 0.001). Similarly, 38.2% of seropositive patients from the Sherbrooke cohort (n = 171) had elevated anti-CarP antibodies; titers correlated to anti-CCP (p = 0.01) but not IgM-RF (p = 0.09). A strong correlation with anti-Sa was observed: 47.9% anti-Sa+ patients were anti-CarP antibodies+ versus only 25.4% anti-Sa- in the Sherbrooke cohort (p = 0.0002), and 62.6% anti-Sa+ patients versus 26.9% anti-Sa- were anti-CarP antibodies+ in Dartmouth (p < 0.0001). We found a more variable response for reactivity to citrullinated fibrinogen or to citrullinated peptides from fibrinogen and α enolase. In 2 North American RA cohorts, we observed a high prevalence of anti-CarP antibody positivity. We also describe a surprising and unexpected association of anti-CarP with anti-Sa antibodies that could not be explained by cross-reactivity. Further, considerable heterogeneity exists between anti-CarP reactivity and other citrullinated peptide reactivity, raising the question of how the pathogenesis of antibody responses for carbamylated proteins and citrullinated proteins may be linked in vivo.

  9. Relationship between intracellular Na+ concentration and reduced Na+ affinity in Na+,K+-ATPase mutants causing neurological disease

    DEFF Research Database (Denmark)

    Toustrup-Jensen, Mads Schak; Einholm, Anja P.; Schack, Vivien

    The neurological disorders familial hemiplegic migraine type 2 (FHM2), alternating hemiplegia of childhood (AHC), and rapid-onset dystonia parkinsonism (RDP) are caused by mutations of Na+,K+-ATPase α2 and α3 isoforms, expressed in glial and neuronal cells, respectively. Although these disorders......, addressing the question to what extent they cause a change of the intracellular Na+ and K+ concentrations ([Na+]i and [K+]i) in COS cells. C-terminal extension mutants generally showed dramatically reduced Na+ affinity without disturbance of K+ binding, as did other RDP mutants. No phosphorylation from ATP...

  10. Anti-oxidant and anti-inflammatory effects of rice bran and green tea ...

    African Journals Online (AJOL)

    Purpose: To investigate the anti-inflammatory and anti-oxidant properties of an enzyme bath of Oryza sativa (rice bran) and Camellia sinensis O. Kuntz (green tea) fermented with Bacillus subtilis (OCB). Methods: The anti-oxidant effects of OCB were assessed by 2,2-Diphenyl-1-picrylhydrazyl (DPPH) assay and flow ...

  11. MOŽNOSTI VSTOPA NA TUJE TRGE NA PRIMERU PODJETJA AWOODTURE

    OpenAIRE

    Orličnik, Urša

    2014-01-01

    Danes pojavljanje podjetja samo na domačem trgu ni več dovolj. Spremembe okolja, naraščanje konkurence ter hiter tehnološki napredek, silijo podjetja k nenehnemu prilagajanju in iskanju novih priložnosti tako na domačem kot tudi na tujem trgu. Internacionalizacija podjetja tako postaja vedno bolj pomemembna za preživetje podjetja. Internacionalizacija se v najširšem smislu nanaša na vse oblike mednarodnega ekonomskega sodelovanja. Je dinamičen proces, kateremu nujno sledi sprememba stanja...

  12. Hemolytic disease of the fetus and newborn caused by anti-E

    Directory of Open Access Journals (Sweden)

    Adiyyatu Sa′idu Usman

    2013-01-01

    Full Text Available Objective: Maternal allo-antibody production is stimulated when fetal red blood cells are positive for an antigen absent on the mother′s red cells. The maternal IgG antibodies produced will pass through the placenta and attack fetal red cells carrying the corresponding antigen. Allo-immune hemolytic disease of the fetus and newborn caused by anti-E rarely occurs. Case summary: We report two cases of anti-E hemolytic diseases in neonates. One of the neonates had severe hemolysis presenting with severe anemia, thrombocytopenia, and conjugated hyperbilirubinemia, while the other had moderate anemia and unconjugated hyperbilrubinemia. Although both the neonates were treated by phototherapy and intravenous immunoglobulin, one of them received double volume exchange transfusion. Conclusion: There appeared to be an increase in the occurrence of hemolytic disease of the fetus and newborn caused by Rh antibodies other than anti-D. In this case report, both patients presented with anemia and hyperbilirubinemia but were successfully treated, with a favorable outcome.

  13. Identification and phylogenetic analysis of Tityus pachyurus and Tityus obscurus novel putative Na+-channel scorpion toxins.

    Directory of Open Access Journals (Sweden)

    Jimmy A Guerrero-Vargas

    Full Text Available Colombia and Brazil are affected by severe cases of scorpionism. In Colombia the most dangerous accidents are caused by Tityus pachyurus that is widely distributed around this country. In the Brazilian Amazonian region scorpion stings are a common event caused by Tityus obscurus. The main objective of this work was to perform the molecular cloning of the putative Na(+-channel scorpion toxins (NaScTxs from T. pachyurus and T. obscurus venom glands and to analyze their phylogenetic relationship with other known NaScTxs from Tityus species.cDNA libraries from venom glands of these two species were constructed and five nucleotide sequences from T. pachyurus were identified as putative modulators of Na(+-channels, and were named Tpa4, Tpa5, Tpa6, Tpa7 and Tpa8; the latter being the first anti-insect excitatory β-class NaScTx in Tityus scorpion venom to be described. Fifteen sequences from T. obscurus were identified as putative NaScTxs, among which three had been previously described, and the others were named To4 to To15. The peptides Tpa4, Tpa5, Tpa6, To6, To7, To9, To10 and To14 are closely related to the α-class NaScTxs, whereas Tpa7, Tpa8, To4, To8, To12 and To15 sequences are more related to the β-class NaScTxs. To5 is possibly an arthropod specific toxin. To11 and To13 share sequence similarities with both α and β NaScTxs. By means of phylogenetic analysis using the Maximum Parsimony method and the known NaScTxs from Tityus species, these toxins were clustered into 14 distinct groups.This communication describes new putative NaScTxs from T. pachyurus and T. obscurus and their phylogenetic analysis. The results indicate clear geographic separation between scorpions of Tityus genus inhabiting the Amazonian and Mountain Andes regions and those distributed over the Southern of the Amazonian rainforest. Based on the consensus sequences for the different clusters, a new nomenclature for the NaScTxs is proposed.

  14. The anti-corrosion behavior under multi-factor impingement of Hastelloy C22 coating prepared by multilayer laser cladding

    Science.gov (United States)

    Chen, Lin; Bai, Shu-Lin

    2018-04-01

    Hastelloy C22 coating was prepared on substrate of Q235 steel by high power multilayer laser cladding. The microstructure, hardness and anti-corrosion properties of coating were investigated. The corrosion tests in 3.5% NaCl solution were carried out with variation of impingement angle and velocity, and vibration frequency of sample. The microstructure of coating changes from equiaxed grain at the top surface to dendrites oriented at an angle of 60° to the substrate inside the coating. The corrosion rate of coating increases with the increase of impingement angle and velocity, and vibrant frequency of sample. Corrosion mechanisms relate to repassivation and depassivation of coating according to electrochemical measurements. Above results show that multilayer laser cladding can endow Hastelloy C22 coating with fine microstructures, high hardness and good anti-corrosion performances.

  15. Na/K pump inactivation, subsarcolemmal Na measurements, and cytoplasmic ion turnover kinetics contradict restricted Na spaces in murine cardiac myocytes

    OpenAIRE

    Lu, Fang-Min; Hilgemann, Donald W.

    2017-01-01

    The Na/K pump exports cytoplasmic Na ions while importing K ions, and its activity is thought to be affected by restricted intracellular Na diffusion in cardiac myocytes. Lu and Hilgemann find instead that the pump can enter an inactivated state and that inactivation can be relieved by cytoplasmic Na.

  16. Anti-nociceptive and anti-inflammatory properties of the ethanolic ...

    African Journals Online (AJOL)

    Anti-nociceptive and anti-inflammatory properties of the ethanolic extract of Lagenaria breviflora whole fruit in rat and mice. ... Its effect was comparable especially at 200mg/kg body weight to those of diclofenac, indomethacin and ibuprofen. It could be suggested from the findings of this experiment that the extract may be ...

  17. Charmed meson rescattering in the reaction anti pd→ anti DDN

    International Nuclear Information System (INIS)

    Haidenbauer, J.; Krein, G.; Meissner, U.G.; Sibirtsev, A.

    2008-01-01

    We examine the possibility to extract information about the DN and anti DN interactions from the anti pd→D 0 D - p reaction. We utilize the notion that the open-charm mesons are first produced in the annihilation of the antiproton on one nucleon in the deuteron and subsequently rescatter on the other (the spectator) nucleon. The latter process is then exploited for investigating the DN and anti DN interactions. We study different methods for isolating the contributions from the D 0 p and D - p rescattering terms. (orig.)

  18. The nontoxic natural compound Curcumin exerts anti-proliferative, anti-migratory, and anti-invasive properties against malignant gliomas

    International Nuclear Information System (INIS)

    Senft, Christian; Polacin, Margareth; Priester, Maike; Seifert, Volker; Kögel, Donat; Weissenberger, Jakob

    2010-01-01

    New drugs are constantly sought after to improve the survival of patients with malignant gliomas. The ideal substance would selectively target tumor cells without eliciting toxic side effects. Here, we report on the anti-proliferative, anti-migratory, and anti-invasive properties of the natural, nontoxic compound Curcumin observed in five human glioblastoma (GBM) cell lines in vitro. We used monolayer wound healing assays, modified Boyden chamber trans-well assays, and cell growth assays to quantify cell migration, invasion, and proliferation in the absence or presence of Curcumin at various concentrations. Levels of the transcription factor phospho-STAT3, a potential target of Curcumin, were determined by sandwich-ELISA. Subsequent effects on transcription of genes regulating the cell cycle were analyzed by quantitative real-time PCR. Effects on apoptosis were determined by caspase assays. Curcumin potently inhibited GBM cell proliferation as well as migration and invasion in all cell lines contingent on dose. Simultaneously, levels of the biologically active phospho-STAT3 were decreased and correlated with reduced transcription of the cell cycle regulating gene c-Myc and proliferation marking Ki-67, pointing to a potential mechanism by which Curcumin slows tumor growth. Curcumin is part of the diet of millions of people every day and is without known toxic side effects. Our data show that Curcumin bears anti-proliferative, anti-migratory, and anti-invasive properties against GBM cells in vitro. These results warrant further in vivo analyses and indicate a potential role of Curcumin in the treatment of malignant gliomas

  19. In Vitro Proliferation and Anti-Apoptosis of the Papain-Generated Casein and Soy Protein Hydrolysates towards Osteoblastic Cells (hFOB1.19).

    Science.gov (United States)

    Pan, Xiao-Wen; Zhao, Xin-Huai

    2015-06-17

    Casein and soy protein were digested by papain to three degrees of hydrolysis (DH) 7.3%-13.3%, to obtain respective six casein and soy protein hydrolysates, aiming to clarify their in vitro proliferation and anti-apoptosis towards a human osteoblastic cell line (hFOB1.19 cells). Six casein and soy protein hydrolysates at five levels (0.01-0.2 mg/mL) mostly showed proliferation as positive 17β-estradiol did, because they conferred the osteoblasts with cell viability of 100%-114% and 104%-123%, respectively. The hydrolysates of higher DH values had stronger proliferation. Casein and soy protein hydrolysates of the highest DH values altered cell cycle progression, and enhanced cell proportion of S-phase from 50.5% to 56.5% and 60.5%. The two also antagonized etoposide- and NaF-induced osteoblast apoptosis. In apoptotic prevention, apoptotic cells were decreased from 31.6% to 22.6% and 15.6% (etoposide treatment), or from 19.5% to 17.7% and 12.4% (NaF treatment), respectively. In apoptotic reversal, soy protein hydrolysate decreased apoptotic cells from 13.3% to 11.7% (etoposide treatment), or from 14.5% to 11.0% (NaF treatment), but casein hydrolysate showed no reversal effect. It is concluded that the hydrolysates of two kinds had estradiol-like action on the osteoblasts, and soy protein hydrolysates had stronger proliferation and anti-apoptosis on the osteoblasts than casein hydrolysates.

  20. Role of xanthine oxidoreductase in the anti-thrombotic effects of nitrite in rats in vivo.

    Science.gov (United States)

    Kramkowski, K; Leszczynska, A; Przyborowski, K; Kaminski, T; Rykaczewska, U; Sitek, B; Zakrzewska, A; Proniewski, B; Smolenski, R T; Chabielska, E; Buczko, W; Chlopicki, S

    2016-01-01

    The mechanisms underlying nitrite-induced effects on thrombosis and hemostasis in vivo are not clear. The goal of the work described here was to investigate the role of xanthine oxidoreductase (XOR) in the anti-platelet and anti-thrombotic activities of nitrite in rats in vivo. Arterial thrombosis was induced electrically in rats with renovascular hypertension by partial ligation of the left renal artery. Sodium nitrite (NaNO2, 0.17 mmol/kg twice daily for 3 days, p.o) was administered with or without one of the XOR-inhibitors: allopurinol (ALLO) and febuxostat (FEB) (100 and 5 mg/kg, p.o., for 3 days). Nitrite treatment (0.17 mmol/kg), which was associated with a significant increase in NOHb, nitrite/nitrate plasma concentration, resulted in a substantial decrease in thrombus weight (TW) (0.48 ± 0.03 mg vs. vehicle [VEH] 0.88 ± 0.08 mg, p < 0.001) without a significant hypotensive effect. The anti-thrombotic effect of nitrite was partially reversed by FEB (TW = 0.63 ± 0.06 mg, p < 0.05 vs. nitrites), but not by ALLO (TW = 0.43 ± 0.02 mg). In turn, profound anti-platelet effect of nitrite measured ex vivo using collagen-induced whole-blood platelet aggregation (70.5 ± 7.1% vs. VEH 100 ± 4.5%, p < 0.05) and dynamic thromboxaneB2 generation was fully reversed by both XOR-inhibitors. In addition, nitrite decreased plasminogen activator inhibitor-1 concentration (0.47 ± 0.13 ng/ml vs. VEH 0.62 ± 0.04 ng/ml, p < 0.05) and FEB/ALLO reversed this effect. In vitro the anti-platelet effect of nitrite (1 mM) was reversed by FEB (0.1 mM) under hypoxia (0.5%O2) and normoxia (20%O2). Nitrite treatment had no effect on coagulation parameters. In conclusion, the nitrite-induced anti-platelet effect in rats in vivo is mediated by XOR, but XOR does not fully account for the anti-thrombotic effects of nitrite.

  1. Texto y figuras preparatorios del Capítulo 11 (Tomo I) de la Histología del Sistema Nervioso de Cajal: [ESTRUCTURA DE LA SUBSTANCIA BLANCA DE LA MÉDULA].

    OpenAIRE

    Freire, Miguel

    2007-01-01

    [ESTRUCTURA DE LA SUBSTANCIA BLANCA DE LA MÉDULA]. Tubos nerviosos, [fibras sin mielina,] células neuróglicas y colaterales nerviosas. ─ Variedades de colaterales distinguidas por el área gris en que se terminan ─ Fibras nerviosas terminales. ─ Fascículos dislocados de la substancia blanca. [Ver: Freire, Miguel. Metodología usada en la presente edición. Metodología e historia de la edición en la correspondencia de Cajal. https://digital.csic.es/handle/10261/150245

  2. Amyotrophic lateral sclerosis (ALS: three letters that change the people's life. For ever Esclerose lateral amiotrófica (ELA: três letras que mudam a vida de uma pessoa. Para sempre

    Directory of Open Access Journals (Sweden)

    Acary Souza Bulle Oliveira

    2009-09-01

    recognition of the clinical and social effects of cognitive impairment. Social, bioethical, and financial issues as well as advance directives should be addressed. A plethora of evidence-based guidelines should be compiled into an internationally agreed guideline of best practice. The multidisciplinary team has changed the history of disease, with still no curative therapy available.A esclerose lateral amiotrófica (ELA é doença neurodegenerativa comprometendo o sistema nervoso motor. Ela causa comprometimento físico, progressivo e acumulativo, com óbito freqüentemente decorrente de falência respiratória. A enfermidade apresenta características diversas nas formas de apresentação, curso e progressão. Não entendemos ainda a causa ou causas dessa enfermidade, nem os mecanismos que regem a sua progressão; assim, tratamentos efetivos não são, até o momento, conhecidos. Atualmente, recomenda-se que os pacientes com ELA sejam tratados com equipe multidisciplinar. Embora ELA e suas variantes sejam reconhecidas por neurologistas, cerca de 10% dos pacientes são mal diagnosticados, e a demora para a confirmação diagnóstica não é incomum. Diagnóstico precoce, informação do diagnóstico com honestidade e sensibilidade, envolvimento do paciente e sua família, e um plano de atenção terapêutica positivo são pré-requisitos essenciais para um melhor resultado clínico e fim terapêutico. Tratamento multidisciplinar e cuidados paliativos podem prolongar a sobrevida e manter melhores aspectos de qualidade de vida. Tratamento com Riluzol aumenta a sobrevida, mas sem alteração na deterioração funcional, enquanto que ventilação não-invasiva prolonga a sobrevida e aumenta ou mantém qualidade de vida. Nesta revisão, nós discutimos o diagnóstico, envolvimento e formas de lidar com dificuldades de funcionamento e de fim de vida, baseando-se na nossa experiência, nos pareceres de peritos, em guias de medicina baseada em evidências científicas, e nos ensaios

  3. Anti-microbial and anti-biofilm compounds from Indonesian medicinal plants

    NARCIS (Netherlands)

    Pratiwi, Sylvia U.T.

    2015-01-01

    Microbial biofilms causing elevated resistance to both most anti-microbial drugs and the host defense systems, which often results in persistent and difficult-to-treat infections. The discovery of anti-infective agents which are active against planktonic and biofilm microorganisms are therefore

  4. Complex molecular mechanisms cooperate to mediate histone deacetylase inhibitors anti-tumour activity in neuroblastoma cells

    Directory of Open Access Journals (Sweden)

    Nardou Katya

    2008-06-01

    Full Text Available Abstract Background Histone deacetylase inhibitors (HDACi are a new class of promising anti-tumour agent inhibiting cell proliferation and survival in tumour cells with very low toxicity toward normal cells. Neuroblastoma (NB is the second most common solid tumour in children still associated with poor outcome in higher stages and, thus NB strongly requires novel treatment modalities. Results We show here that the HDACi Sodium Butyrate (NaB, suberoylanilide hydroxamic acid (SAHA and Trichostatin A (TSA strongly reduce NB cells viability. The anti-tumour activity of these HDACi involved the induction of cell cycle arrest in the G2/M phase, followed by the activation of the intrinsic apoptotic pathway, via the activation of the caspases cascade. Moreover, HDACi mediated the activation of the pro-apoptotic proteins Bid and BimEL and the inactivation of the anti-apoptotic proteins XIAP, Bcl-xL, RIP and survivin, that further enhanced the apoptotic signal. Interestingly, the activity of these apoptosis regulators was modulated by several different mechanisms, either by caspases dependent proteolytic cleavage or by degradation via the proteasome pathway. In addition, HDACi strongly impaired the hypoxia-induced secretion of VEGF by NB cells. Conclusion HDACi are therefore interesting new anti-tumour agents for targeting highly malignant tumours such as NB, as these agents display a strong toxicity toward aggressive NB cells and they may possibly reduce angiogenesis by decreasing VEGF production by NB cells.

  5. Glutamic acid decarboxylase (anti-GAD & tissue transglutaminase (anti-TTG antibodies in patients with thyroid autoimmunity

    Directory of Open Access Journals (Sweden)

    R K Marwaha

    2013-01-01

    Full Text Available Background & objectives: Several autoimmune disorders have been reported to be associated with autoimmune thyroiditis and may coexist with other organ-specific autoantibodies. The aim of the present study was to evaluate the presence of tissue transglutaminase (anti-TTG and glutamic acid decarboxylase (anti-GAD antibodies in patients suffering from autoimmune thyroiditis as diagnosed by anti-thyroid peroxidase (anti-TPO antibodies, which may indicate high risk for developing celiac disease or type 1 diabetes mellitus. Methods: Five thousand children and 2800 adults were screening as part of a general health examination done on a voluntary basis in four different parts of Delhi. A total of 577 subjects positive for anti-TPO antibody constituted the cases. Equal number of age and sex matched anti-TPO antibody negative controls were randomly selected from the same cohort to form paired case control study. The cases and controls were further divided into two groups as follows: group-1 (children and adolescent 18 yr. Serum samples of cases and controls were analysed for thyroid function test (FT3, FT4, and TSH, anti-TTG and anti-GAD antibodies. Results: A total of 1154 subjects (577 cases and 577 controls were included in this study. Hypothyroidism was present in 40.2 per cent (232 cases compared to only 4.7 per cent (27 in controls (P<0.001. Anti-TTG and anti-GAD antibodies were present in 6.9 and 12.5 per cent subjects among cases compared to 3.5 per cent (P=0.015 and 4.3 per cent (P=0.001 in controls, respectively. Only anti-GAD antibody were significantly positive in cases among children and adolescents (P =0.0044 and adult (P=0.001 compared to controls. Levels of anti-TTG and anti-GAD antibodies increased with increasing titre of anti-TPO antibody. Interpretation & conclusions: Our findings showed high positivity of anti-GAD and anti-TTG antibodies among subjects with thyroid autoimmunity. It is, therefore, important to have high clinical index

  6. Anti-nociceptive, anti-hyperalgesic and anti-arthritic activity of amides and extract obtained from Piper amalago in rodents.

    Science.gov (United States)

    da Silva Arrigo, Jucicléia; Balen, Eloise; Júnior, Ubirajara Lanza; da Silva Mota, Jonas; Iwamoto, Renan Donomae; Barison, Andersson; Sugizaki, Mario Mateus; Leite Kassuya, Cândida Aparecida

    2016-02-17

    Piper amalago (Piperaceae) has been used in folk medicine as an analgesic. This study aimed to evaluate the pharmacological effects of extract and pure amides obtained from P. amalago on pain to provide a pharmacological basis for their use in traditional medicine. This study evaluated the anti-nociceptive, anti-hyperalgesic, anti-arthritic and anti-depressive activities of the ethanolic extract of P. amalago (EEPA) and the amides N-[7-(3',4'-methylenedioxyphenyl)-2(Z),4(Z)-heptadienoyl] pyrrolidine (1) and N-[7-(3',4'-methylenedioxyphenyl)-2(E),4(E)-heptadienoyl] pyrrolidine (2) obtained from P. amalago in animal models. Mice treated daily with EEPA (100mg/kg, p.o.) were assayed for 20 days for knee edema (micrometer measurement), mechanical hyperalgesia (analgesiometer analysis), heat sensitivity and immobility (forced swim test) in the Complete Freund's Adjuvant (CFA) model. Cold (acetone test) and mechanical hyperalgesia (electronic von Frey analysis) responses were evaluated for 15 days in rats treated with oral EEPA (100mg/kg) in the spared nerve injury (SNI) model. Meanwhile, mice were evaluated for carrageenan-induced edema and mechanical hyperalgesia and for nociception using the formalin model after a single administration of EEPA (100mg/kg) or amides 1 and 2 (1mg/kg). Amides (1) and (2) were detected and isolated from the EEPA. The EEPA inhibited mechanical hyperalgesia, knee edema, and heat hyperalgesia, but not depressive-like behavior, induced by the intraplantar injection of CFA. When evaluated in the SNI model, the EEPA inhibited mechanical and cold hyperalgesia. The EEPA, 1 and 2 prevented the mechanical hyperalgesia induced by carrageenan and the anti-nociceptive effects in both phases of formalin nociception. The EEPA did not induce alterations in the open field test. The EEPA was effective for inhibition of pain and arthritic parameters but was not effective against depressive-like behavior; additionally, it did not alter locomotor activity. The

  7. É possível discutir o assédio moral na enfermagem?

    OpenAIRE

    Hagopian, Ellen M.; Freitas, Genival Fernandes de; Costa, Kleber S.

    2016-01-01

    O assédio moral representa uma conduta antiética que rompe com o equilíbrio no ambiente de trabalho e se mostra contrário aos bons costumes e à boa-fé que deve nortear as relações sociais e laborais (Alkimin, 2005). Objetivo: Identificar e analisar a produção científica sobre o fenômeno do assédio moral na enfermagem. Método: Revisão sistemática de literatura com abordagem qualitativa. Critérios de inclusão: todas as categorias de artigos com textos completos; publicados nos idiomas português...

  8. Anti-Saccharomyces cerevisiae and perinuclear anti-neutrophil cytoplasmic antibodies in coeliac disease before and after gluten-free diet.

    Science.gov (United States)

    Granito, A; Zauli, D; Muratori, P; Muratori, L; Grassi, A; Bortolotti, R; Petrolini, N; Veronesi, L; Gionchetti, P; Bianchi, F B; Volta, U

    2005-04-01

    Anti-Saccharomyces cerevisiae and perinuclear anti-neutrophil cytoplasmic autoantibodies are markers of Crohn's disease and ulcerative colitis respectively. To determine the prevalence of anti-S. cerevisiae and perinuclear anti-neutrophil cytoplasmic autoantibodies in a large series of coeliac disease patients before and after gluten free diet, and to correlate anti-S. cerevisiae-positivity with intestinal mucosal damage. One hundred and five consecutive coeliac disease patients and 141 controls (22 ulcerative colitis, 24 Crohn's disease, 30 primary sclerosing cholangitis, 15 postenteritis syndrome, 50 blood donors) were tested for anti-S. cerevisiae by enzyme-linked immunosorbent assay and for perinuclear anti-neutrophil cytoplasmic autoantibodies by indirect immunofluorescence. In coeliac disease anti-S. cerevisiae (immunoglobulin G and/or immunoglobulin A) were slightly less frequent (59%) than in Crohn's disease (75%, P = 0.16) and significantly more frequent than in ulcerative colitis (27%), primary sclerosing cholangitis (30%), postenteritis syndrome (26%) and blood donors (4%) (P = 0.009, P = 0.0002, P = 0.025, P < 0.0001). No correlation was found between anti-S. cerevisiae and degree of mucosal damage. Perinuclear anti-neutrophil cytoplasmic autoantibodies were detected only in one coeliac. After gluten free diet the disappearance of anti-S. cerevisiae-immunoglobulin A (93%) was more frequent than that of immunoglobulin G (17%, P = 0.0001); perinuclear anti-neutrophil cytoplasmic autoantibodies disappeared in the only coeliac positive at diagnosis. More than half of untreated coeliacs are anti-S. cerevisiae-positive irrespective of the severity of mucosal damage. Differently from immunoglobulin A, anti-S. cerevisiae-immunoglobulin G persisted in more than 80% after gluten free diet. The high prevalence of anti-S. cerevisiae in coeliac disease suggests that they may be the effect of a non-specific immune response in course of chronic small bowel disease.

  9. Single phase semipolar (11 anti 22) GaN on (10 anti 10) sapphire

    Energy Technology Data Exchange (ETDEWEB)

    Ploch, S.; Stellmach, J.; Schwaner, T.; Frentrup, M.; Wernicke, T.; Pristovsek, M.; Kneissl, M. [Institute of Solid States Physics, (Germany); Park, J.B.; Niermann, T.; Lehmann, M. [Institute of Optics and Atomic Physics, TU Berlin, Hardenbergstr. 36, 10623 Berlin (Germany)

    2011-07-01

    InGaN quantum well based light emitters grown on (0001) GaN suffer from poor quantum efficiencies with increasing indium mole fraction due to strong polarization fields along the polar crystal orientation. This effect can be greatly reduced by growing on semi- and non-polar GaN orientations. Semipolar (11 anti 22) GaN layers were deposited by metalorganic vapour phase epitaxy on (10 anti 10) sapphire. After sapphire substrate nitridation at 1000 C, a GaN nucleation layer was deposited at high temperature, followed by the deposition of 1.5 nm thick GaN buffer layers. The samples show predominantly (11 anti 22) orientation with a small fraction of (10 anti 13) oriented domains. With increasing nitridation layer thickness the (10 anti 13) phase is suppressed leading to a very smooth surface morphology (rms roughness < 4nm). PL measurements show dominant basel plane stacking fault (BSF) I{sub 1} luminescence without any other defects. Transmission electron microscopy measurements reveal a high BSF density. The FWHM of the X-ray diffraction rocking curve measurements of the (1122) reflection decreases to 1193 arcsec and 739 arcsec along [1 anti 100] and [11 anti 23] respectively with increasing nucleation temperature. Using high temperature nucleation smooth and homogeneous (11 anti 22) phase GaN layers have been obtained.

  10. A clinical, epidemological, laboratorial, histological and ultrasonographical evaluation of anti-HCV EIA-2 positive blood donors Avaliação clínica, epidemiológica, laboratorial, histológica e ultrassonográfica de doadores de sangue anti-HCV EIA-2 positivos

    Directory of Open Access Journals (Sweden)

    Fernando L. GONÇALES JR

    2000-06-01

    RIBA-2 positive subjects, in 37.5% of the indeterminate RIBA-2 donors and in 9% of the negative RIBA-2 donors. Chronic hepatitis has also been observed in 50% of the histopathological exams of the anti-HCV EIA-2 reagent donors which were indeterminate RIBA-2. Among 18 blood donors with minimal changes histopathological exam 11 (61% were HCV-RNA positive. Our blood donors anti-HCV reagent generally had clinical, laboratorial and histopathological features observed in patients with chronic HCV hepatitis and a high proportion could be identified in interviews and medical evaluation realized in blood blanks. Generally, these HCV infected donors are identified and discharged only by the serological tests results.Entre 1992 e 1997 foram avaliados, ambulatorialmente, 790 doadores de sangue com teste anti-HCV EIA-2 fortemente reagente (relação entre a densidade ótica da amostra / "cut-off" > 3, que haviam sido detectados na triagem sorológica do banco de sangue. Todos eram negativos para doença de Chagas, sífilis, hepatite B (HBsAg e AIDS. Amostras de sangue foram coletadas, na primeira consulta ambulatorial, para a realização de hemograma, exames bioquímicos e novos testes sorológicos para a HVC (anti-HCV EIA-2. Em 226 doadores anti-HCV EIA-2 repetidamente reagentes, realizou-se o teste suplementar de "immunoblot" para a HVC (RIBA-2. Em 209 doadores, pesquisou-se a presença do RNA do VHC pelo teste do PCR, através de exame automatizado (HCV-AMPLICOR, ROCHE. A ultra-sonografia abdominal foi realizada em 366 doadores e a biópsia hepática em 269 concordantes. Notou-se que 95,6% eram EIA-2 repetidamente reagentes, 94% eram assintomáticos e que apenas 2% referiram icterícia pregressa. Em 47% detectou-se, pelo menos, um fator de risco para a transmissão do VHC, sendo o uso de drogas E.V. o principal deles (27,8%. A transfusão de sangue foi o segundo fator na transmissão da HVC (27,2%. Hepatomegalia foi encontrada em 54%. Esplenomegalia e sinais de hipertens

  11. Production of light (anti-)nuclei and (anti-)hypernuclei with ALICE at the LHC

    CERN Multimedia

    CERN. Geneva

    2017-01-01

    The measurements in smaller collision systems may also provide an input to cosmological searches for segregated primordial anti-matter and dark matter, since anti-nuclei produced in pp and p--A collisions in interstellar space represent a background source in these measurements. Thanks to its excellent particle identification and tracking capabilities, the ALICE detector allows for the measurement of deuterons, tritons, 3He, 4He and their corresponding anti-nuclei. Moreover, the secondary vertices from the mesonic decays of (anti-)hypernuclei can ...

  12. Vpliv toplotnih mostov na porabo energije za ogrevanje na primeru osnovne šole

    OpenAIRE

    Megušar, Primož

    2015-01-01

    Na primeru Osnovne šole Dobrova sem preveril, kakšen vpliv imajo dejanski toplotni mostovi na porabo energije za ogrevanje. Iz načrtov stavbe sem evidentiral vse toplotne mostove, kateri vplivajo na porabo energije. Tem toplotnim mostovom sem nato v standardu SIST EN ISO 14683 poiskal ustrezne približke. Nato sem s programom TOST izvedel tri simulacije. V prvem primeru toplotnih mostov nisem upošteval. V drugem primeru sem toplotne mostove upošteval na poenostavljen način, v zadnjem primeru p...

  13. Na and K dependence of the Na/K pump in cystic fibrosis fibroblasts.

    OpenAIRE

    Reznik, V M; Schneider, J A; Mendoza, S A

    1981-01-01

    The Na and K dependence of the Na/K pump was measured in skin fibroblasts from patients with cystic fibrosis and age/sex-matched controls. Under basal conditions, there was no difference between control and cystic fibrosis cells in protein per cell, intracellular Na and K content, or Na/K pump activity (measured as ouabain-sensitive 86Rb uptake). There was no difference in the Na dependence of the Na/K pump between cystic fibrosis cells and control cells. In cells from patients with cystic fi...

  14. The anti-aging and anti-oxidation effects of tea water extract in Caenorhabditis elegans.

    Science.gov (United States)

    Fei, Tianyi; Fei, Jian; Huang, Fang; Xie, Tianpei; Xu, Jifeng; Zhou, Yi; Yang, Ping

    2017-10-15

    Tea includes puer tea, black tea, green tea and many others. By using model organism Caenorhabditis elegans, the anti-aging and anti-oxidation effects of tea water extract were systemically examined in this study. We found that water extract of puer tea, black tea and green tea all increased the lifespan of worms, postponed Aβ-induced progressive paralysis in Alzheimer's disease transgenic worms, and improved the tolerance of worms to the oxidative stress induced by heavy metal Cr 6+ . Moreover, the anti-oxidation effects of tea water extract at low concentration were different among 4 kinds of brands of green tea. The underlying mechanisms were further explored using genetically manipulated-mutant worms. The anti-oxidative stress effects of green tea water extract depend on the dietary restriction and germline signaling pathways, but not the FOXO and mitochondrial respiratory chain signals. Therefore, tea water extract provides benefits of anti-aging, anti-AD and anti-oxidation. Copyright © 2017. Published by Elsevier Inc.

  15. Anti-beta2 glycoprotein 1 and the anti-phospholipid syndrome.

    LENUS (Irish Health Repository)

    Keane, Pearse A

    2012-02-03

    PURPOSE: To describe a patient who presented with bilateral retinal vascular occlusion and the use of anti-beta2 glycoprotein 1 (GPI) antibody testing in the diagnosis of antiphospholipid syndrome. DESIGN: Observational case report. METHODS: Hematological investigations were performed on a 49-year-old man who presented with rapid onset of bilateral severe central retinal vein occlusion. RESULTS: Lupus anticoagulant and anticardiolipin antibody testing was negative. Markedly raised titers of anti-beta2 GPI antibodies were detected on two separate occasions. CONCLUSIONS: The raised titers of anti-beta2 GPI antibodies were considered to strongly suggest an underlying diagnosis of the antiphospholipid syndrome.

  16. Vliv mikroflóry na senzorické vlastnosti vína

    OpenAIRE

    Petrášová, Ludmila

    2014-01-01

    Tato bakalářská práce se zabývá vlivem mikroflóry na senzorické vlastnosti vína. Teoretická část informuje o botanickém popisu hroznů vína Veltlínské zelené, dále o jeho složení, o technologii zpracování bílého vína a o vlivu kvasinek na aromatický profil vína. V další části popisuje metodu stanovení aromaticky aktivních látek pomocí plynové chromatografie v kombinaci s mikroextrakcí tuhou fází (SPME-GC). Cílem experimentální části bylo proměřit vzorky 4 různých moštů odrůdy Veltlínské zelené...

  17. [Protective effects of luteolin on neurons against oxygen-glucose deprivation/reperfusion injury via improving Na+/K+ -ATPase activity].

    Science.gov (United States)

    Fang, Lumei; Zhang, Mingming; Ding, Yuemin; Fang, Yuting; Yao, Chunlei; Zhang, Xiong

    2010-04-01

    Luteolin, a flavone, has considerable neuroprotective effects by its anti-oxidative mechanism. However, it is still unclear whether luteolin can protect neurons against oxygen-glucose deprivation/reperfusion (OGD/R) induced injury. After 2 hours oxygen-glucose deprivation and 24 hours reperfusion treatment in primary cultured hippocampal neurons, the neuron viability, survival rate and apoptosis rate were evaluated by MTT assay, lactate dehydrogenase (LDH) leakage assay and Hoechst staining, respectively. The activity of Na+/K+ -ATPase was examined in cultured neurons or in the hippocampus of SD rats treated by 10 minutes global cerebral ischemia and followed 24 hours reperfusion. Treatment by OGD/R markedly reduced neuronal viability, increased LDH leakage rate and increased apoptosis rate. Application of luteolin (10-100 micromol x L(-1)) during OGD inhibited OGD/R induced neuron injury and apoptosis in a dose-dependent manner. Compared to the control group or OGP/R-treated neurons, the activity of Na+/K+ -ATPase was significantly suppressed in global ischemia/reperfusion group or OGD/R-treated neurons. Application of luteolin during ischemia or OGD preserved the Na+/K+ -ATPase activity. Furthermore, inhibition of Na+/K+ -ATPase with ouabain attenuated the protective effect afforded by luteolin. The data provide the evidence that luteolin has neuroprotective effect against OGD/R induced injury and the protective effect may be associated with its ability to improve Na+/K+ -ATPase activity after OGD/R.

  18. Comparison between anti-CEA and anti-HER2 212Pb-labeled mAbs during α-RIT of small volume peritoneal carcinomatosis - Role of activity distribution on therapeutic efficacy and toxicity?

    International Nuclear Information System (INIS)

    Elgqvist, J.; Boudousq, V.; Bobyk, L.; Busson, M.; Lozza, C.; Navarro-Teulon, I.; Pouget, J.P.; Maquaire, P.; Torgue, J.

    2015-01-01

    Full text of publication follows. Objectives: we investigated the role of internalizing/non-internalizing monoclonal antibodies (mAbs) on the final outcome (efficacy/toxicity) of mice treated with alpha radioimmunotherapy (α- RIT) using 212 Pb-labeled mAbs. The relationship between distribution of radioactivity at the tissue level and biological parameters was also assessed. Methods: nude mice bearing 2-3 mm peritoneal nodules obtained by xenograft of A-431 tumor cells, expressing low and high level of HER2 and CEA receptors, respectively, were intraperitoneally (i.p.) injected with increasing activities (370-1480 kBq; 37 MBq/mg) of either 35A7 (non-internalising anti-CEA), Trastuzumab (internalizing anti-HER2) or PX (non-specific) 212 Pb-labeled mAbs. Control groups were injected with corresponding amount of unlabeled mAbs or with NaCl. Tumor growth was followed by bioluminescence and median survival (MS) of control and treated mice was determined. 212 Pb-35A7 and 212 Pb-Trastuzumab biodistribution was used to determine the cumulative uptake of radioactivity (UOR) in organs and tumors. Mean absorbed doses were calculated using the MIRD formalism. Haematological, liver and kidney toxicities were also assessed. Distribution of radioactivity at the tissue level was determined by digital micro-autoradiography and the relationship with biological markers of tissue damage was investigated using immunohistochemistry. Results: a mild and transient haematological toxicity in groups treated with the highest amount of activity was observed. MS of the groups treated either with internalizing or non-internalizing 212 Pb-labeled mAbs was significantly improved compared to those treated with non-specific 212 Pb-PX or those only given unlabeled mAbs or just NaCl. MS ranged from 42 days to 94 days using various activity levels of anti-CEA 212 Pb-35A7 while MS was not reached over the follow-up period of 130 days for mice treated with anti-HER2 212 Pb-Trastuzumab. However, UOR and

  19. The effect of anti-hypertensive drugs on the obstructive pancreatitis in rats Efeitos de fármacos anti-hipertensivos sobre pancreatite obstrutiva em ratos

    Directory of Open Access Journals (Sweden)

    Roberto de Barros Silva

    2010-10-01

    do tratamento com. RESULTADOS: A inflamação, deposição de colágeno no pâncreas de animais tratados foram menores, sugerindo que o uso de agentes anti-hipertensivos interferiram positivamente na diminuição da lesão do pâncreas. Este estudo mostrou uma correlação entre a atividade das células pancreáticas estreladas (CSP menor nos animais tratados quando comparados ao control. CONCLUSÃO: A força das células pancreáticas estreladas está envolvida na produção de colágeno durante a pancreatite aguda e por medicamentos anti-hipertensivos, tais como lisinopril e losartan pode eventualmente ter efeitos benéficos na redução da fibrose do pâncreas em modelos experimentais de pancreatite obstrutiva.

  20. The Salivary Anti-A and Anti-B Isoantibody System in Group O Males.

    Science.gov (United States)

    agglutinins increased significantly in two individuals and anti-B in four, and parotid saliva anti-A agglutinins in one and anti-B in three. Both whole...and parotid saliva agglutinating activity were demonstrated to be primarily due to secretory IgA, both pre- and postimmunization. IgG coating activity

  1. Retórica Das Imagens Na Construção Do Discurso Anti-homofóbico

    Directory of Open Access Journals (Sweden)

    Daniel Mazzaro Vilar de Almeida

    2016-07-01

    Full Text Available Este trabalho consiste em analisar como o imaginário da tolerância é construído em imagens contidas em propagandas de prevenção à homofobia no Brasil e em outros países latino-americanos na contemporaneidade. O corpus é formado por propagandas veiculadas em redes sociais e o foco de nossa análise é o papel dos efeitos patêmicos na construção dos ethé de vítima. Para tanto, nos valemos das contribuições de Mendes (2010, 2012, 2013 sobre a análise integrada de imagens e de Wieviorka (2005 sobre a compreensão moderna da "vítima". Recorremos também a Butler (2010, segundo a qual a linguagem projeta feixes de realidade sobre o corpo social, marcando-o e moldando-o violentamente com base em um esquema heterossexual. Observamos, no corpus, a ocorrência de efeitos patêmicos ligados à empatia e ao medo [da violência], em uma escala que vai da repugnância ao terror. A finalidade de tais efeitos visados é justamente tentar sensibilizar os cidadãos para a causa do combate à homofobia. No que tange ao ethos, percebemos a projeção de uma imagem de si, inicialmente, como vítima, mas que se transforma em uma imagem de ator social capaz de lutar pelos seus direitos pelo fato de estar em uma propaganda de combate à homofobia.

  2. Anti-synthetase syndrome associated with anti PL-12 and anti-Signal recognition particle antibodies and a necrotizing auto-immune myositis.

    Science.gov (United States)

    Malkan, Ashish; Cappelen-Smith, Cecilia; Beran, Roy; Griffith, Neil; Toong, Catherine; Wang, Min-Xia; Cordato, Dennis

    2015-02-01

    We report a 37-year-old woman with a 2 month history of proximal muscle weakness and extremely high creatine kinase (21,808 U/L) due to necrotizing auto-immune myositis (NAM) in association with anti-synthetase syndrome. Myositis-specific auto-immune antibody panel was positive for anti-Signal recognition particle and anti-PL-12. CT scan of the chest confirmed interstitial lung disease. Prednisolone, intravenous immunoglobulin and cyclophosphamide therapy was given with gradual improvement. This patient is notable for the unusual combination of NAM and anti-synthetase syndrome with the rare finding of two myositis-specific autoantibodies, which directed testing for associated extramuscular features and management with more aggressive immunotherapy. Copyright © 2014 Elsevier Ltd. All rights reserved.

  3. Leucodistrofia metacromática: estudo dos aminácidos livres no sangue, urina, saliva e líquido cefalorraqueano

    Directory of Open Access Journals (Sweden)

    Ovidio D. Escalante

    1964-09-01

    Full Text Available É registrado, presumivelmente pela primeira vez na literatura, o aumento da aminacidúria em casos de leucodistrofia metacromática. Mediante cromatografia circular e bidimensional foram estudados os aminácidos livres na urina, sangue, saliva e líquido cefalorraqueano de dois casos familiais de leucodistrofia metacromática. No sangue foi verificado aumento da concentração de cistina, ácido as-pártico, glicina, ácido glutâmico, alanina, prolina, tirosina e fenilalanina. Na urina encontravam-se elevados o ácido aspártico, cistina, alanina, prolina, tirosina e fenilalanina. Na saliva foi notado aumento do ácido a-y-diaminobutírico, ácido glutâmico, alanina e prolina. No líquido cefalorraqueano o ácido aspártico, alanina, prolina e fenilalanina encontravam-se em maiores concentrações. Além disso, estavam presentes 6 aminácidos não identificados. Um dêles desintegrava-se em três componentes e uma destas frações comportava-se como um polipeptídeo, provàvelmente identificável a uma substância composta de ácido glutâmico, glicina e ácido aspártico. Esta substância poderia integrar um complexo polipéptido-lipídico resultante de um dismetabolismo lipídico, já conhecido nas leucodistrofias, associado a um distúrbio do metabolismo protêico, agora relatado. Os resultados são comparados com os dados referidos na literatura relativa às concentrações de aminácidos no líquido cefalorraqueano e urina de algumas afecções nervosas de caráter desmielinizante. No líquido cefalorraqueano o perfil da leucodistrofia metacromática se assemelha aos anteriormente encontrados na moléstia de Niemann-Pick, na degeneração ce-rebromacular e na "esclerose difusa". Na urina as alterações se aproximam das que ocorrem na moléstia de Hartnup.

  4. Synthesis, structure analysis, anti-bacterial and in vitro anti-cancer ...

    Indian Academy of Sciences (India)

    DOI 10.1007/s12039-015-0824-z. Synthesis, structure analysis, anti-bacterial and in vitro anti-cancer activity of new Schiff base and its copper complex derived from sulfamethoxazole. I RAMA∗ and R SELVAMEENA. PG and Research Department of Chemistry, Seethalakshmi Ramaswami College,. Tiruchirappalli 620 002 ...

  5. Anti-Halal and Anti-Animal Slaughtering Campaigns and Their Impact in Post-War Sri Lanka

    Directory of Open Access Journals (Sweden)

    Mohammad Agus Yusoff

    2017-03-01

    Full Text Available This paper aims to examine the overall impact of anti-halal and anti-slaughtering campaigns in the context of post-war Sri Lanka. The reemergence of majoritarian ethno-religious anti-minority nationalist forces and their intensified anti-minority hatred and violence have made it challenging for ethno-religious minorities in Sri Lanka to engage in religious norms and duties. This is especially true for the Muslim community. Numerous Islamic fundamentals have been criticized and opposed. Muslims have had to endure threats and acts of violence. These campaigns and violent oppositions, imposed by the Buddhist-nationalist forces, have caused concern for Muslims performing their obligatory religious duties and norms. In Sri Lanka, the Muslim community has been allowed to produce halal food and slaughter animals for human consumption and religious rituals for a long period without disturbance. Unfortunately, retaliation and hatred in the post-civil war era in the country have threatened these rights. Thus, it has become imperative to investigate the motivating factors of the anti-halal and anti-animal slaughtering campaigns and violence, as well as their related impact, which is lacking in the existing literature on ethno-religious politics in the context of Sri Lanka. This study found that the anti-halal and anti-animal slaughtering campaigns and oppositions that have been intensified by the Buddhist nationalist forces were part of anti-Muslim sentiments intended to sabotage the economic pride of Muslims and undermine their religious renaissance. The study also found that these campaigns have been facilitated by the state and that continuous facilitation of the anti-Muslim sentiments and campaigns, including the anti-halal and anti-animal slaughter campaigns, would challenge the country’s economic prosperity and the rebuilding of ethno-religious harmony.

  6. Evaluation of Iron Nickel Oxide Nanopowder as Corrosion Inhibitor: Effect of Metallic Cations on Carbon Steel in Aqueous NaCl

    Energy Technology Data Exchange (ETDEWEB)

    Chaudhry, A. U.; Mishra, Brajendra [Colorado School of Mines, Denver (United States); Mittal, Vikas [The Petroleum Institute, Abu Dhabi (United Arab Emirates)

    2016-01-15

    The aim of this study was to evaluate the use of iron-nickel oxide (Fe{sub 2}O{sub 3}.NiO) nanopowder (FeNi) as an anti-corrosion pigment for a different application. The corrosion protection ability and the mechanism involved was determined using aqueous solution of FeNi prepared in a corrosive solution containing 3.5 wt.% NaCl. Anti-corrosion abilities of aqueous solution were determined using electrochemical impedance spectroscopy (EIS) on line pipe steel (API 5L X-80). The protection mechanism involved the adsorption of metallic cations on the steel surface forming a protective film. Analysis of EIS spectra revealed that corrosion inhibition occurred at low concentration, whereas higher concentration of aqueous solution produced induction behavior.

  7. Behavioral and neural effects of intra-striatal infusion of anti-streptococcal antibodies in rats

    Science.gov (United States)

    Lotan, Dafna; Benhar, Itai; Alvarez, Kathy; Mascaro-Blanco, Adita; Brimberg, Lior; Frenkel, Dan; Cunningham, Madeleine W.; Joel, Daphna

    2014-01-01

    Group A β-hemolytic streptococcal (GAS) infection is associated with a spectrum of neuropsychiatric disorders. The leading hypothesis regarding this association proposes that a GAS infection induces the production of auto-antibodies, which cross-react with neuronal determinants in the brain through the process of molecular mimicry. We have recently shown that exposure of rats to GAS antigen leads to the production of anti-neuronal antibodies concomitant with the development of behavioral alterations. The present study tested the causal role of the antibodies by assessing the behavior of naïve rats following passive transfer of purified antibodies from GAS-exposed rats. Immunoglobulin G (IgG) purified from the sera of GAS-exposed rats was infused directly into the striatum of naïve rats over a 21-day period. Their behavior in the induced-grooming, marble burying, food manipulation and beam walking assays was compared to that of naïve rats infused with IgG purified from adjuvant-exposed rats as well as of naïve rats. The pattern of in vivo antibody deposition in rat brain was evaluated using immunofluorescence and colocalization. Infusion of IgG from GAS-exposed rats to naïve rats led to behavioral and motor alterations partially mimicking those seen in GAS-exposed rats. IgG from GAS-exposed rats reacted with D1 and D2 dopamine receptors and 5HT-2A and 5HT-2C serotonin receptors in vitro. In vivo, IgG deposits in the striatum of infused rats colocalized with specific brain proteins such as dopamine receptors, the serotonin transporter and other neuronal proteins. Our results demonstrate the potential pathogenic role of autoantibodies produced following exposure to GAS in the induction of behavioral and motor alterations, and support a causal role for autoantibodies in GAS-related neuropsychiatric disorders. PMID:24561489

  8. IgA anti-Streptococcus mutans em crianças com e sem cárie dentária Anti-Streptococcus mutans IgA in children with and without dental caries

    Directory of Open Access Journals (Sweden)

    Suzete Cristina YAZAKI

    1999-07-01

    Full Text Available A cárie dentária é uma doença infecciosa crônica que necessita pelo menos quatro componentes para desenvolver-se: hospedeiro suscetível, microbiota patogênica, dieta rica em sacarose e tempo. Este trabalho estuda as correlações existentes entre estreptococos salivares do grupo mutans, placa bacteriana e anticorpos IgA anti-Streptococcus mutans em crianças com e sem experiência de cárie. Para tanto, utilizou-se o meio Mitis Salivarius (DIFCO para determinar o número de Unidades Formadoras de Colônias (UFC/ml, o Índice de Higiene Oral Simplificado (IHOS para mensurar a quantidade de placa bacteriana e a técnica ELISA para detectar anticorpos anti-S. mutans. Os resultados obtidos mostraram que não existe uma correlação entre os níveis salivares de estreptococos (UFC/ml e IgA anti-S. mutans na população estudada. No grupo com cárie, uma correlação positiva, estatisticamente significante, foi observada entre o Índice de placa e IgA específica.Dental caries is a chronic infectious disease that needs at least four components to develop. As a susceptible host, a pathogenic microbiota, a high-sucrose diet and time. This work assess the relationships between Streptococcus mutans and dental plaque; Streptococcus mutans and IgA antibodies in children with and without caries experience. In order to achieve this goal we have used Mitis Salivarius bacitracin agar (DIFCO to determine the colony forming units (CFU/mL, the simplified oral hygiene index (SOHI for measuring bacterial plaque and ELISA for antibody detection. The results obtained have not shown any correlations between colony forming units of S. mutans and IgA antibodies. A significant correlation was found between bacterial plaque index and specific IgA in children with carious lesions.

  9. Study of the Na-C-O and Na-H-O ternary systems in the sodium rich corner

    International Nuclear Information System (INIS)

    Maupre, J.-P.

    1978-02-01

    The purpose of this study is to provide a contribution to the understanding of the sodium - carbon - oxygen and sodium - hydrogen - oxygen ternary systems in the sodium rich corner. In order to do this the Na-NaH-Na 2 O-NaOH phase diagram was completed and the Na-Na 2 O-Na 2 CO 3 -C phase diagram was outlined. This work is made up of two parts. The first is devoted to a critical literature survey essential to establish correct phase diagrams. The second is an experimental study followed by a discussion collating our finding to the literary data. The basic experimental technique used is differential thermal analysis (DTA) but it has been completed by quenching, X-ray and chemical analysis methods. The proposed phase diagrams imply that Na-NaH-Na 2 O-NaOH and Na-Na 2 O-Na 2 CO 3 -C systems are reciprocal ternary systems. Temperatures of stable pairs reversal are respectively 410 and 690 0 C. The stable pairs are Na-NaOH and Na-Na 2 CO 3 at elevated temperature, Na 2 O-NaH and Na 2 O-C at low temperature [fr

  10. Experimental determination of the complete spin structure for anti-proton + proton -> anti-\\Lambda + \\Lambda at anti-proton beam momentum of 1.637 GeV/c

    CERN Document Server

    Paschke, K.D.; Berdoz, A.; Franklin, G.B.; Khaustov, P.; Meyer, C.A.; Bradtke, C.; Gehring, R.; Goertz, S.; Harmsen, J.; Meier, A.; Meyer, W.; Radtke, E.; Reicherz, G.; Dutz, H.; Pluckthun, M.; Schoch, B.; Dennert, H.; Eyrich, W.; Hauffe, J.; Metzger, A.; Moosburger, M.; Stinzing, F.; Wirth, St.; Fischer, H.; Franz, J.; Heinsius, F.H.; Kriegler, E.; Schmitt, H.; Bunker, B.; Hertzog, D.; Jones, T.; Tayloe, R.; Broders, R.; Geyer, R.; Kilian, K.; Oelert, W.; Rohrich, K.; Sachs, K.; Sefzick, T.; Bassalleck, B.; Eilerts, S.; Fields, D.E.; Kingsberry, P.; Lowe, J.; Stotzer, R.; Johansson, T.; Pomp, S.; Wirth, St.

    2006-01-01

    The reaction anti-proton + proton -> anti-\\Lambda + \\Lambda -> anti-proton + \\pi^+ + proton + \\pi^- has been measured with high statistics at anti-proton beam momentum of 1.637 GeV/c. The use of a transversely-polarized frozen-spin target combined with the self-analyzing property of \\Lambda/anti-\\Lambda decay allows access to unprecedented information on the spin structure of the interaction. The most general spin-scattering matrix can be written in terms of eleven real parameters for each bin of scattering angle, each of these parameters is determined with reasonable precision. From these results all conceivable spin-correlations are determined with inherent self-consistency. Good agreement is found with the few previously existing measurements of spin observables in anti-proton + proton -> anti-\\Lambda + \\Lambda near this energy. Existing theoretical models do not give good predictions for those spin-observables that had not been previously measured.

  11. Parallel screening of wild-type and drug-resistant targets for anti-resistance neuraminidase inhibitors.

    Directory of Open Access Journals (Sweden)

    Kai-Cheng Hsu

    Full Text Available Infection with influenza virus is a major public health problem, causing serious illness and death each year. Emergence of drug-resistant influenza virus strains limits the effectiveness of drug treatment. Importantly, a dual H275Y/I223R mutation detected in the pandemic influenza A 2009 virus strain results in multidrug resistance to current neuraminidase (NA drugs. Therefore, discovery of new agents for treating multiple drug-resistant (MDR influenza virus infections is important. Here, we propose a parallel screening strategy that simultaneously screens wild-type (WT and MDR NAs, and identifies inhibitors matching the subsite characteristics of both NA-binding sites. These may maintain their potency when drug-resistant mutations arise. Initially, we analyzed the subsite of the dual H275Y/I223R NA mutant. Analysis of the site-moiety maps of NA protein structures show that the mutant subsite has a relatively small volume and is highly polar compared with the WT subsite. Moreover, the mutant subsite has a high preference for forming hydrogen-bonding interactions with polar moieties. These changes may drive multidrug resistance. Using this strategy, we identified a new inhibitor, Remazol Brilliant Blue R (RB19, an anthraquinone dye, which inhibited WT NA and MDR NA with IC(50 values of 3.4 and 4.5 µM, respectively. RB19 comprises a rigid core scaffold and a flexible chain with a large polar moiety. The former interacts with highly conserved residues, decreasing the probability of resistance. The latter forms van der Waals contacts with the WT subsite and yields hydrogen bonds with the mutant subsite by switching the orientation of its flexible side chain. Both scaffolds of RB19 are good starting points for lead optimization. The results reveal a parallel screening strategy for identifying resistance mechanisms and discovering anti-resistance neuraminidase inhibitors. We believe that this strategy may be applied to other diseases with high

  12. Análises visual e volumétrica por ressonância magnética das formações hipocampais em um grupo de pacientes com diagnóstico clínico de epilepsia do lobo temporal

    Directory of Open Access Journals (Sweden)

    ROGACHESKI ÊNIO

    1998-01-01

    Full Text Available Visando comparar a sensibilidade da avaliação volumétrica com a análise visual na avaliação por ressonância magnética (RM das formações hipocampais de pacientes com epilepsia do lobo temporal refratária e candidatos à lobectomia temporal, estudamos 153 casos com diagnóstico clínico de epilepsia do lobo temporal, utilizando um equipamento de 0,5 Tesla, com técnica de inversion-recovery ponderada em T1, com cortes de 5 mm no plano coronal. Houve boa concordância entre a análise visual prospectiva e outra retrospectiva, realizada por dois observadores independentes (C=0,748 e 0,720. Houve também concordância entre a análise retrospectiva dos dois observadores (C=0,733. Houve ainda concordância genuína (C=0,788 entre os resultados das análises quantitativa e qualitativa realizadas prospectivamente. A análise quantitativa demonstrou uma tendência não-significativa a lateralizar mais casos de atrofia hipocampal presumida clinicamente. Nossos resultados confirmam a confiabilidade da análise visual qualitativa e indicam a utilidade da volumetria hipocampal como uma medida suplementar, objetiva e quantitativa, de esclerose hipocampal.

  13. Response of saliva Na/K ratio to changing Na supply of lactating cows under tropical conditions.

    Science.gov (United States)

    Thiangtum, Wandee; Schonewille, J Thomas; Verstegen, Martin Wa; Arsawakulsudhi, Supot; Rukkwamsuk, Theera; Hendriks, Wouter H

    2017-06-01

    Factorial determination of the sodium (Na) requirement of heat-stressed lactating cows is hindered by accurate estimates of the Na losses through sweat. Direct studies, therefore, may be needed requiring information on the time course of healthy animals to become Na depleted and the subsequent rate of repletion. The rate of Na depletion and subsequent rate of Na repletion with two levels of dietary Na to lactating dairy cows housed under tropical conditions were investigated using the salivary Na/K. The 12 lactating cows (salivary Na/K ratio 14.6) rapidly developed clinical signs of Na deficiency, including pica, polyuria and polydipsia, reduced body weight and reduced milk yield when fed a low-Na ration (0.33 g kg -1 dry matter (DM)) for 3 weeks. Deficiency symptoms were associated with a rapid decrease in salivary Na/K ratio to cows with NaCl to a ration concentration of 1.1 or 1.6 g Na kg -1 DM for 5 weeks did not restore salivary Na/K ratio to values of >6. A daily Na intake of heat-stressed lactating cows to a ration intake of 1.6 g Na kg -1 DM was insufficient to restore Na deficiency. One week was sufficient to deplete heat-stressed lactating cows of Na, allowing for rapid dose-response studies utilizing the salivary Na/K ratio as a parameter for Na status of cows under tropical conditions. © 2016 Society of Chemical Industry. © 2016 Society of Chemical Industry.

  14. [Clinical case of management of a patient with Guillain-Barre syndrome].

    Science.gov (United States)

    Popov, A V; Babak, C I; Murashko, N K

    2012-01-01

    Syndrome of Giyena-Barre can arise up in any age, in different regions, for men more frequent, than for women. There are descriptions of clinical supervisions of syndrome in domestic literature, combining with the defeat of the nervous system as a result of different pathogens which are procatarxiss in the start of mechanisms of immune attack on the albumens of mielina. However this disease continues to remain one of most heavy, requiring neyroreanimacionnykh measures, that causes the necessity of development of new methods of treatment in same queue.

  15. Effect of paclitaxel (Taxol) on the biodistribution of sodium pertechnetate (Na99mTcO4) in female Wistar rats

    Energy Technology Data Exchange (ETDEWEB)

    Holanda, Cecilia Maria de Carvalho Xavier; Oliveira, Elias Herculano de; Rocha, Louisianny Guerra da [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Dept. de Microbiologia e Parasitologia. Lab. de Ensaios Antiparasitarios e de Radiobiologia Experimental]. E-mail: cechol@ufrnet.br; Barbosa, Vanessa Santos de Arruda [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Centro de Ciencias da Saude; Spyrides, Maria Helena Constantino [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Dept. de Estatistica; Aragao, Cicero Flavio Soares [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Dept. de Farmacia; Medeiros, Aldo da Cunha [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Hospital Universitario Onofre Lopes

    2008-12-15

    The evidence that natural or synthetic drugs can affect the biodistribution of radiopharmaceuticals (radiobiocomplexes) in setting of nuclear medicine clinic is already known. We studied the effect of Paclitaxel, an anti-neoplastic agent for the treatment of solid tumors, on the biodistribution of Na{sup 99}'mTcO{sub 4} in female rats. Paclitaxel (1 mg/mL/week) was administered into animals in single dose during 3 weeks, with interval of 1 week among them. The control group received NaCl 0.9% solutions by the same via. One hour after the last dose, it was injected Na{sup 99m}TcO{sub 4} in the animals. The percentage of activity per gram (%ATI/g) and biochemical and hematological determinations were performed. A significant increase were found in alanine aminotransferase, aspartate aminotransferase, glucose and in the %ATI/g of some organs (ovaries, uterus, vagina, breasts, large intestine and liver). These results can be associated, probably, to the capacity of paclitaxel to alter the biodistribution of Na{sup 99m}TcO{sub 4} and the metabolism of glucose and hepatic enzymes. (author)

  16. Four anti-protozoal and anti-bacterial compounds from Tapirira guianensis.

    Science.gov (United States)

    Roumy, Vincent; Fabre, Nicolas; Portet, Bénédicte; Bourdy, Geneviève; Acebey, Lucia; Vigor, Claire; Valentin, Alexis; Moulis, Claude

    2009-01-01

    Tapirira guianensis is a common tree used in traditional medicine in French Guiana against several infectious diseases (malaria, leishmaniasis, bacteria, etc.). The bioassay-guided purification of CH(2)Cl(2) bark extract led to the isolation of four cyclic alkyl polyol derivatives: 4,6,2'-trihydroxy-6-[10'(Z)-heptadecenyl]-1-cyclohexen-2-one (1a), 1,4,6-trihydroxy-1,2'-epoxy-6-[10'(Z)-heptadecenyl]-2-cyclohexene (1b), 1,4,5,2'-tetrahydroxy-1-[10'(Z)-heptadecenyl]-2-cyclohexene (2), and 1,3,4,6-tetrahydroxy-1,2'-epoxy-6-[10'(Z)-heptadecenyl]-cyclohexane (3). The structures were established on the basis of 1D and 2D NMR analyses. The anti-leishmanial, anti-plasmodial, anti-bacterial (on Staphylococcus aureus, Staphylococcus epidermidis and Escherichia coli), and anti-fungal (on Candida albicans) activities of the extracts and of these original compounds were evaluated. Two showed medicinal interest supporting the traditional uses of the plant. The structures were established through spectral analyses of the isolates and their derivatives.

  17. Expression of BAFF receptors in muscle tissue of myositis patients with anti-Jo-1 or anti-Ro52/anti-Ro60 autoantibodies.

    Science.gov (United States)

    Kryštůfková, Olga; Barbasso Helmers, Sevim; Venalis, Paulius; Malmström, Vivianne; Lindroos, Eva; Vencovský, Jiří; Lundberg, Ingrid E

    2014-10-10

    Anti-Jo-1 and anti-Ro52 autoantibodies are common in patients with myositis, but the mechanisms behind their production are not known. Survival of autoantibody-producing cells is dependent on B-cell-activating factor of the tumour necrosis factor family (BAFF). BAFF levels are elevated in serum of anti-Jo-1-positive myositis patients and are influenced by type-I interferon (IFN). IFN-producing cells and BAFF mRNA expression are present in myositis muscle. We investigated expression of the receptors for BAFF in muscle tissue in relation to anti-Jo-1 and anti-Ro52/anti-Ro60 autoantibodies and type-I IFN markers. Muscle biopsies from 23 patients with myositis selected based on autoantibody profile and 7 healthy controls were investigated for expression of BAFF receptor (BAFF-R), B-cell maturation antigen (BCMA) and transmembrane activator and calcium modulator and cyclophilin ligand interactor (TACI). Nineteen samples were assessed for plasma (CD138) and B-cell (CD19) markers. The numbers of positive cells per area were compared with the expression of plasmacytoid dendritic cell (pDC) marker blood dendritic cell antigen-2 (BDCA-2) and IFNα/β-inducible myxovirus resistance-1 protein (MX-1). BAFF-R, BCMA and TACI were expressed in five, seven and seven patients, respectively, and more frequently in anti-Jo-1-positive and/or anti-Ro52/anti-Ro60-positive patients compared to controls and to patients without these autoantibodies (P = BAFF-R: 0.007, BCMA: 0.03 and TACI: 0.07). A local association of receptors with B and plasma cells was confirmed by confocal microscopy. The numbers of CD138-positive and BCMA-positive cells were correlated (r = 0.79; P = 0.001). Expression of BDCA-2 correlated with numbers of CD138-positive cells and marginally with BCMA-positive cells (r = 0.54 and 0.42, respectively; P = 0.04 and 0.06, respectively). There was a borderline correlation between the numbers of positively stained TACI cells and MX-1 areas (r = 0.38, P = 0.08). The expression

  18. Uso de péptidos neurales modificados como tratamiento de una lesión en la médula espinal: una vision general

    Directory of Open Access Journals (Sweden)

    Paola Suárez-Meade

    2015-01-01

    Full Text Available La lesión de la médula espinal ( lme es un fenómeno que daña al sistema nervioso central ( snc , y produce la pérdida de la actividad fisiológica por debajo del sitio de la lesión. Actualmente no existe algún tratamiento efectivo para la lme en el campo clínico. El papel del sistema inmune a través de la autorreactividad protectora ( ap —un fenómeno fisiológico desa - rrollado después de la lme — puede ser de gran importancia para inducir neuroprotección. La ap puede estimularse con el uso de péptidos neurales modificados ( pnm procedentes de componentes neurales como la proteína básica de la mielina. El presente artículo pretende dar una visión general de esta estrategia terapéutica innovadora que ofrece efectos bené - ficos y un futuro muy alentador. Se revisará el fundamento, los mecanismos y los hallazgos preclínicos más importantes utilizando el pnm a 91. Finalmente, se comentarán los obstáculos a vencer para su aplicación clínica.

  19. Identification of {2 anti 1 anti 10} and {10 anti 10} Laue patterns of hexagonal and rhombohedral silicon carbide polytypes

    International Nuclear Information System (INIS)

    Yoganathan, M.; Suttrop, W.; Devaty, R.P.; Choyke, W.J.

    1994-01-01

    The development of epitaxic and bulk-grown semiconductor SiC exhibiting uniform polytype phase homogeneity is critically dependent upon the accurate identification of crystallographic orientations corresponding to the desired polytype. In this paper, experimental transmission Laue photographs as well as computer-generated transmission Laue patterns are presented for {2 anti 1 anti 10} and {10 anti 10} faces of the 4H, 6H and 15R polytypes of silicon carbide. The transmission patterns permit easy recognition of polytypes and crystal orientations. (orig.)

  20. Glutathionylation-Dependence of Na+-K+-Pump Currents Can Mimic Reduced Subsarcolemmal Na+ Diffusion

    Science.gov (United States)

    Garcia, Alvaro; Liu, Chia-Chi; Cornelius, Flemming; Clarke, Ronald J.; Rasmussen, Helge H.

    2016-01-01

    The existence of a subsarcolemmal space with restricted diffusion for Na+ in cardiac myocytes has been inferred from a transient peak electrogenic Na+-K+ pump current beyond steady state on reexposure of myocytes to K+ after a period of exposure to K+-free extracellular solution. The transient peak current is attributed to enhanced electrogenic pumping of Na+ that accumulated in the diffusion-restricted space during pump inhibition in K+-free extracellular solution. However, there are no known physical barriers that account for such restricted Na+ diffusion, and we examined if changes of activity of the Na+-K+ pump itself cause the transient peak current. Reexposure to K+ reproduced a transient current beyond steady state in voltage-clamped ventricular myocytes as reported by others. Persistence of it when the Na+ concentration in patch pipette solutions perfusing the intracellular compartment was high and elimination of it with K+-free pipette solution could not be reconciled with restricted subsarcolemmal Na+ diffusion. The pattern of the transient current early after pump activation was dependent on transmembrane Na+- and K+ concentration gradients suggesting the currents were related to the conformational poise imposed on the pump. We examined if the currents might be accounted for by changes in glutathionylation of the β1 Na+-K+ pump subunit, a reversible oxidative modification that inhibits the pump. Susceptibility of the β1 subunit to glutathionylation depends on the conformational poise of the Na+-K+ pump, and glutathionylation with the pump stabilized in conformations equivalent to those expected to be imposed on voltage-clamped myocytes supported this hypothesis. So did elimination of the transient K+-induced peak Na+-K+ pump current when we included glutaredoxin 1 in patch pipette solutions to reverse glutathionylation. We conclude that transient K+-induced peak Na+-K+ pump current reflects the effect of conformation-dependent β1 pump subunit

  1. Glutathionylation-Dependence of Na(+)-K(+)-Pump Currents Can Mimic Reduced Subsarcolemmal Na(+) Diffusion.

    Science.gov (United States)

    Garcia, Alvaro; Liu, Chia-Chi; Cornelius, Flemming; Clarke, Ronald J; Rasmussen, Helge H

    2016-03-08

    The existence of a subsarcolemmal space with restricted diffusion for Na(+) in cardiac myocytes has been inferred from a transient peak electrogenic Na(+)-K(+) pump current beyond steady state on reexposure of myocytes to K(+) after a period of exposure to K(+)-free extracellular solution. The transient peak current is attributed to enhanced electrogenic pumping of Na(+) that accumulated in the diffusion-restricted space during pump inhibition in K(+)-free extracellular solution. However, there are no known physical barriers that account for such restricted Na(+) diffusion, and we examined if changes of activity of the Na(+)-K(+) pump itself cause the transient peak current. Reexposure to K(+) reproduced a transient current beyond steady state in voltage-clamped ventricular myocytes as reported by others. Persistence of it when the Na(+) concentration in patch pipette solutions perfusing the intracellular compartment was high and elimination of it with K(+)-free pipette solution could not be reconciled with restricted subsarcolemmal Na(+) diffusion. The pattern of the transient current early after pump activation was dependent on transmembrane Na(+)- and K(+) concentration gradients suggesting the currents were related to the conformational poise imposed on the pump. We examined if the currents might be accounted for by changes in glutathionylation of the β1 Na(+)-K(+) pump subunit, a reversible oxidative modification that inhibits the pump. Susceptibility of the β1 subunit to glutathionylation depends on the conformational poise of the Na(+)-K(+) pump, and glutathionylation with the pump stabilized in conformations equivalent to those expected to be imposed on voltage-clamped myocytes supported this hypothesis. So did elimination of the transient K(+)-induced peak Na(+)-K(+) pump current when we included glutaredoxin 1 in patch pipette solutions to reverse glutathionylation. We conclude that transient K(+)-induced peak Na(+)-K(+) pump current reflects the effect

  2. Natural and cross-inducible anti-SIV antibodies in Mauritian cynomolgus macaques.

    Directory of Open Access Journals (Sweden)

    Hongzhao Li

    Full Text Available Cynomolgus macaques are an increasingly important nonhuman primate model for HIV vaccine research. SIV-free animals without pre-existing anti-SIV immune responses are generally needed to evaluate the effect of vaccine-induced immune responses against the vaccine epitopes. Here, in order to select such animals for vaccine studies, we screened 108 naïve female Mauritian cynomolgus macaques for natural (baseline antibodies to SIV antigens using a Bio-Plex multiplex system. The antigens included twelve 20mer peptides overlapping the twelve SIV protease cleavage sites (-10/+10, respectively (PCS peptides, and three non-PCS Gag or Env peptides. Natural antibodies to SIV antigens were detected in subsets of monkeys. The antibody reactivity to SIV was further confirmed by Western blot using purified recombinant SIV Gag and Env proteins. As expected, the immunization of monkeys with PCS antigens elicited anti-PCS antibodies. However, unexpectedly, antibodies to non-PCS peptides were also induced, as shown by both Bio-Plex and Western blot analyses, while the non-PCS peptides do not share sequence homology with PCS peptides. The presence of natural and vaccine cross-inducible SIV antibodies in Mauritian cynomolgus macaques should be considered in animal selection, experimental design and result interpretation, for their best use in HIV vaccine research.

  3. Anti- versus Pro-Competitive Mergers

    OpenAIRE

    Fridolfsson, Sven-Olof

    2007-01-01

    In a framework where mergers are mutually excluding, I show that firms pursue anti- rather than (alternative) pro-competitive mergers. Potential outsiders to anti-competitive mergers refrain from pursuing pro-competitive mergers if the positive externalities from anti-competitive mergers are strong enough. Potential outsiders to pro-competitive mergers pursue anti-competitive mergers if the negative externalities from the pro-competitive mergers are strong enough. Potential participants in an...

  4. Anti-Coagulant and Anti-Thrombotic Properties of Blacklip Abalone (Haliotis rubra): In Vitro and Animal Studies.

    Science.gov (United States)

    Suleria, Hafiz Ansar Rasul; Masci, Paul P; Zhao, Kong-Nan; Addepalli, Rama; Chen, Wei; Osborne, Simone A; Gobe, Glenda C

    2017-08-04

    Sulphated polysaccharides with anti-thrombotic and anti-coagulant activities have been found in various marine biota. In this study, a previously characterised anti-thrombotic and anti-coagulant extract from blacklip abalone was fractionated by anion exchange chromatography (AEC), pooled (on a sulphated polysaccharide basis) and administered to Wistar rats via oral gavage (N = 8) for assessment as an oral therapeutic. To ensure that the preparation had anti-coagulant activity prior to oral administration, it was assessed in rat blood by thromboelastography (TEG) significantly increasing reaction (R) time (or time until clot formation). Following in vitro confirmation of anti-coagulant activity, 40 mg of the preparation was orally administered to rats with blood samples collected at 2, 4, and 6 h post-gavage. Assessment of all blood samples by TEG showed some prolongation of R time from 355 to 380 s after 4 h. Dosing of the post-gavage blood samples with the abalone preparation to confirm anti-thrombotic activity in vitro revealed residual anti-coagulant activity, further suggesting that oral administration did increase anti-coagulant potential in the collected blood but that bioavailability was low. Assessment of tissues and haematological parameters showed no obvious harmful effects of the abalone preparation in animals. In summary, even though oral administration of fractionated and pooled blacklip abalone extract to rats delayed clotting after 4 h, bioavailability of the preparation appeared to be low and may be more appropriate for intravenous administration as an anti-thrombotic or anti-coagulant therapeutic.

  5. Oxidized LDL-induced angiogenesis involves sphingosine 1-phosphate: prevention by anti-S1P antibody.

    Science.gov (United States)

    Camaré, Caroline; Trayssac, Magali; Garmy-Susini, Barbara; Mucher, Elodie; Sabbadini, Roger; Salvayre, Robert; Negre-Salvayre, Anne

    2015-01-01

    Neovascularization occurring in atherosclerotic lesions may promote plaque expansion, intraplaque haemorrhage and rupture. Oxidized LDL (oxLDL) are atherogenic, but their angiogenic effect is controversial; both angiogenic and anti-angiogenic effects have been reported. The angiogenic mechanism of oxLDL is partly understood, but the role of the angiogenic sphingolipid, sphingosine 1-phosphate (S1P), in this process is not known. Thus, we investigated whether S1P is involved in the oxLDL-induced angiogenesis and whether an anti-S1P monoclonal antibody can prevent this effect. Angiogenesis was assessed by capillary tube formation by human microvascular endothelial cells (HMEC-1) cultured on Matrigel and in vivo by the Matrigel plug assay in C57BL/6 mice. Human oxLDL exhibited a biphasic angiogenic effect on HMEC-1; low concentrations were angiogenic, higher concentrations were cytotoxic. The angiogenic response to oxLDL was blocked by the sphingosine kinase (SPHK) inhibitor, dimethylsphingosine, by SPHK1-siRNA and by an anti-S1P monoclonal antibody. Moreover, inhibition of oxLDL uptake and subsequent redox signalling by anti-CD36 and anti-LOX-1 receptor antibodies and by N-acetylcysteine, respectively, blocked SPHK1 activation and tube formation. In vivo, in the Matrigel plug assay, low concentrations of human oxLDL or murine oxVLDL also triggered angiogenesis, which was prevented by i.p. injection of the anti-S1P antibody. These data highlight the role of S1P in angiogenesis induced by oxLDL both in HMEC-1 cultured on Matrigel and in vivo in the Matrigel plug model in mice, and demonstrate that the anti-S1P antibody effectively blocks the angiogenic effect of oxLDL. © 2014 The British Pharmacological Society.

  6. Use of low-dose aspirin and non-aspirin nonsteroidal anti-inflammatory drugs and risk of glioma

    DEFF Research Database (Denmark)

    Gaist, David; García-Rodríguez, L A; Sørensen, H T

    2013-01-01

    Background:Few studies have examined the association between use of aspirin or other non-steroidal anti-inflammatory drugs (NSAIDs) and risk of glioma and the results have been equivocal. We therefore investigated the influence of NSAID use on glioma risk in a nationwide setting.Methods:We used...... exposure to low-dose aspirin or non-aspirin (NA) NSAIDs into ever use or long-term use, defined as continuous use for 5 years. Conditional logistic regression was used to compute odds ratios (ORs), with 95% confidence intervals (CIs), for glioma associated with NSAID use, adjusted for potential...... confounders.Results:A total of 2688 glioma cases and 18 848 population controls were included in the study. Ever use of low-dose aspirin (OR=0.90; 95% CI: 0.77-1.04) or NA-NSAIDs (OR=1.05; 95% CI: 0.96-1.14) was not associated with glioma risk. Compared with never use, long-term use of low-dose aspirin...

  7. Large-scale fabrication of superhydrophobic polyurethane/nano-Al2O3 coatings by suspension flame spraying for anti-corrosion applications

    Science.gov (United States)

    Chen, Xiuyong; Yuan, Jianhui; Huang, Jing; Ren, Kun; Liu, Yi; Lu, Shaoyang; Li, Hua

    2014-08-01

    This study aims to further enhance the anti-corrosion performances of Al coatings by constructing superhydrophobic surfaces. The Al coatings were initially arc-sprayed onto steel substrates, followed by deposition of polyurethane (PU)/nano-Al2O3 composites by a suspension flame spraying process. Large-scale corrosion-resistant superhydrophobic PU/nano-Al2O3-Al coatings were successfully fabricated. The coatings showed tunable superhydrophilicity/superhydrophobicity as achieved by changing the concentration of PU in the starting suspension. The layer containing 2.0 wt.%PU displayed excellent hydrophobicity with the contact angle of ∼151° and the sliding angle of ∼6.5° for water droplets. The constructed superhydrophobic coatings showed markedly improved anti-corrosion performances as assessed by electrochemical corrosion testing carried out in 3.5 wt.% NaCl solution. The PU/nano-Al2O3-Al coatings with superhydrophobicity and competitive anti-corrosion performances could be potentially used as protective layers for marine infrastructures. This study presents a promising approach for fabricatiing superhydrophobic coatings for corrosion-resistant applications.

  8. Impact of a Novel, Anti-microbial Dressing on In Vivo, Pseudomonas aeruginosa Wound Biofilm: Quantitative Comparative Analysis using a Rabbit Ear Model

    Science.gov (United States)

    2014-12-01

    therapies such as debridement , lavage, and antimicrobials, but with little evidence that they improve chronic wound healing in a quantitative and... TYPE N/A 3. DATES COVERED - 4. TITLE AND SUBTITLE Impact of a novel, anti-microbial dressing on in vivo, Pseudomonas aeruginosa wound biofilm...study. Bacterial strains and culture Wild- type strains of P. aeruginosa (obtained from the labora- tory of Dr. Barbara H. Iglewski, University of

  9. Edema na hanseníase: aspectos clínicos e terapêuticos

    Directory of Open Access Journals (Sweden)

    Valentini Attilio

    1999-01-01

    Full Text Available Durante o curso da hanseníase, o edema comumente descrito como um sintoma de estados reacionais, pode ocorrer. Tanto o diagnóstico como a terapêutica adequada são, freqüentemente, difíceis de conseguir e assim podem acarretar permanente dano aos membros inferiores. Em um ano de acompanhamento, pacientes hansenianos - 10 multibacilares e 1 paucibacilar -, que foram submetidos a um protocolo clínico para o diagnóstico e classificação histopatológica, apresentaram clinicamente edema, localizado ou sistêmico. Entre estes pacientes, cinco apresentaram simultaneamente outros sintomas de reação, 4 foram classificados como reação Tipo I e um como reação tipo II. Por outro lado, três pacientes não apresentaram reação no momento do diagnóstico, mas desenvolveram alguns aspectos de reação posteriormente (2 tiveram neurite e um teve reação tipo I. Os edemas observados precedendo ou associados a quadros reacionais apresentaram ótima resposta clínica às drogas de ação anti-inflamatória (corticóide, talidomida e pentoxifilina utilizadas para o tratamento dos estados reacionais, na ausência de qualquer outro tratamento normalmente usado para edema. Embora necessitem ser confirmados por estudos controlados, estes dados sugerem fortemente que mecanismos imunológicos estejam envolvidos na fisiopatologia dos edemas na hanseníase.

  10. Rituximab for the treatment of refractory simultaneous anti-glomerular basement membrane (anti-GBM) and membranous nephropathy.

    Science.gov (United States)

    Bandak, Ghassan; Jones, Bruce A; Li, Jian; Yee, Jerry; Umanath, Kausik

    2014-02-01

    Antibody-mediated anti-glomerular basement membrane (anti-GBM) disease occurs rarely in the presence of another B-cell disorder, membranous nephropathy. The coexistence of these two autoimmune disorders would be anticipated to require differing, specific therapies targeted to each disease process. We describe a case of concomitant membranous nephropathy and anti-GBM disease in which conventional therapy, including steroids, plasmapheresis and cyclophosphamide, failed to attenuate the anti-GBM disease, yet responded to an alternative treatment of rituximab. This B-cell directed, monoclonal, chimeric antibody treatment substantially reduced anti-GBM antibody titers and led to discontinuation of plasmapheresis, while maintaining the remission of membranous nephropathy and anti-GBM disease.

  11. anti p and anti d production in relativistic heavy ion collisions: Results of BNL-E858

    Energy Technology Data Exchange (ETDEWEB)

    Stankus, P; Nagamiya, S [Columbia Univ., Nevis Labs., Irvington, NY (United States); Aoki, M; Hayano, R S; Shimizu, Y [Tokyo Univ. (Japan); Beatty, J [Boston Univ., MA (United States); Beavis, D; Debbe, R [Brookhaven National Lab., Upton, NY (United States); Carroll, J B [California Univ., Los Angeles, CA (United States); Chiba, J; Tanaka, K H [National Lab. for High Energy Physics (KEK), Tsukuba (Japan); Doke, T; Kashiwagi, T; Kikuchi, J [Waseda Univ., Tokyo (Japan); Hallman, T J [Johns Hopkins Univ., Baltimore, MD (United States); Heckman, H H; Lindstrom, P J [Lawrence Berkeley Lab., CA (United States); Kirk, P N; Wang, Z F [Louisiana State Univ., Baton Rouge, LA (United States); Crawford, H J; Engelage, J; Greiner, L [Space Sciences Lab., California Univ., Berkeley, CA (United States); E858 Collaboration

    1992-07-20

    The production of long-lived negative secondaries, including [pi][sup -], K[sup -], antiprotons (anti p) and antideuterons (anti d) at 0deg in Si+Au, Si+Cu, and Si+Al collisions at the BNL-AGS has been measured using a double-bend, double-focussing spectrometer. The anti p rapidity spectra from all three targets are well fit by Gaussians centered (anti y = 1.7 - 1.8) at mid-rapidity, and are consistent with production in nucleon-nucleon first collisions. The anti d/anti p[sup 2] ratio in Si+Al collisions is lower by a factor of 10 than that seen in p+p and p+A collisions. (orig.).

  12. Anti-atherosclerotic effects of tomatoes

    Directory of Open Access Journals (Sweden)

    Hidekatsu Yanai

    2017-06-01

    Full Text Available Tomatoes are rich in lycopene, which causes the red coloring of tomatoes. Several reports have suggested lycopene plays a role in the prevention of cardiovascular diseases. In this study, we systematically reviewed the interventional studies using tomatoes or tomato products to understandtheanti-atherosclerotic effects of the tomatoas a functional food. We found that a significantnumber of interventional studies reportedtheanti-atherosclerotic effects of tomatoes, includinganti-obesity effects, hypotensiveeffects, improvement of lipid/glucose metabolismand endothelial function, anti-oxidative and anti-inflammatory effect, and anti-platelet effect; however, the anti-platelet effect was disagreed uponby some studies. Furthermore, we discoveredcooking methods significantlyaffect anti-atherosclerotic effects of tomatoes.

  13. Crystal structure of a Na+-bound Na+,K+-ATPase preceding the E1P state.

    Science.gov (United States)

    Kanai, Ryuta; Ogawa, Haruo; Vilsen, Bente; Cornelius, Flemming; Toyoshima, Chikashi

    2013-10-10

    Na(+),K(+)-ATPase pumps three Na(+) ions out of cells in exchange for two K(+) taken up from the extracellular medium per ATP molecule hydrolysed, thereby establishing Na(+) and K(+) gradients across the membrane in all animal cells. These ion gradients are used in many fundamental processes, notably excitation of nerve cells. Here we describe 2.8 Å-resolution crystal structures of this ATPase from pig kidney with bound Na(+), ADP and aluminium fluoride, a stable phosphate analogue, with and without oligomycin that promotes Na(+) occlusion. These crystal structures represent a transition state preceding the phosphorylated intermediate (E1P) in which three Na(+) ions are occluded. Details of the Na(+)-binding sites show how this ATPase functions as a Na(+)-specific pump, rejecting K(+) and Ca(2+), even though its affinity for Na(+) is low (millimolar dissociation constant). A mechanism for sequential, cooperative Na(+) binding can now be formulated in atomic detail.

  14. Na+-H+ exchange and Na+-dependent transport systems in streptozotocin diabetic rat kidneys

    International Nuclear Information System (INIS)

    El-Seifi, S.; Freiberg, J.M.; Kinsella, F.J.; Cheng, L.; Sacktor, B.

    1987-01-01

    The streptozotocin-induced diabetic rat was used to test the hypothesis that Na + -H + exchange activity in the proximal tubule luminal membrane would be increased in association with renal hypertrophy, altered glomerular hemodynamics, enhanced filtered load and tubular reabsorption of 22 Na + , and stimulated 22 Na= pump activity in the basolateral membrane, previously reported characteristics of this experimental animal model. Amiloride-sensitive H + gradient-dependent Na + uptake and Na + gradient-dependent H + flux were increased in brush-border membrane vesicles from the streptozotocin-treated animals. Na + gradient-dependent uptakes of phosphate, D-glucose, L-proline, and myoinositol were decreased in the drug-induced diabetic animals. These membrane transport alterations were not found when the streptozotocin-diabetic animals were treated with insulin

  15. Quantitation of anti-tetanus and anti-diphtheria antibodies by enzymoimmunoassay: methodology and applications.

    Science.gov (United States)

    Virella, G; Hyman, B

    1991-01-01

    We have developed enzymoimmunoassays (EIA) for the quantitation of antibodies (Ab) to tetanus and diphtheria toxoids (TT, DT) using Immulon I plates coated with the appropriate toxoid. A preparation of human tetanus immunoglobulin with a known concentration of anti-TT Ab was used as calibrator of the anti-TT antibody assay. The assay of anti-DT Ab is calibrated with a pool of human sera whose anti-DT Ab concentration was determined by quantitative immunoelectrophoresis, using a horse anti-DT with known Ab concentration as calibrator. A peroxidase-conjugated anti-human IgG was used in both assays. ABTS was used as substrate, and the reaction was stopped after 1 min incubation with citric acid and the OD measured at 414 nm on a Vmax reader. The assays have been applied to a variety of clinical situations. In patients suspected of having tetanus, the quantitation of antibodies has been helpful in establishing a diagnosis. In patients with a history of hypersensitivity to tetanus toxoid, verification of the levels of anti-TT antibody may prevent unnecessary and potentially harmful immunizations. The assays have also been used for the diagnostic evaluation of the humoral immune response to TT and DT, both in pediatric patients and in immunosuppressed patients. Several non-responders have been detected, and we have recently used the assay to monitor the effects of fish oil administration on the humoral immune response.(ABSTRACT TRUNCATED AT 250 WORDS)

  16. The two C-terminal tyrosines stabilize occluded Na/K pump conformations containing Na or K ions.

    Science.gov (United States)

    Vedovato, Natascia; Gadsby, David C

    2010-07-01

    Interactions of the three transported Na ions with the Na/K pump remain incompletely understood. Na/K pump crystal structures show that the extended C terminus of the Na,K-adenosine triphosphatase (ATPase) alpha subunit directly contacts transmembrane helices. Deletion of the last five residues (KETYY in almost all Na/K pumps) markedly lowered the apparent affinity for Na activation of pump phosphorylation from ATP, a reflection of cytoplasmic Na affinity for forming the occluded E1P(Na3) conformation. ATPase assays further suggested that C-terminal truncations also interfere with low affinity Na interactions, which are attributable to extracellular effects. Because extracellular Na ions traverse part of the membrane's electric field to reach their binding sites in the Na/K pump, their movements generate currents that can be monitored with high resolution. We report here electrical measurements to examine how Na/K pump interactions with extracellular Na ions are influenced by C-terminal truncations. We deleted the last two (YY) or five (KESYY) residues in Xenopus laevis alpha1 Na/K pumps made ouabain resistant by either of two kinds of point mutations and measured their currents as 10-mM ouabain-sensitive currents in Xenopus oocytes after silencing endogenous Xenopus Na/K pumps with 1 microM ouabain. We found the low affinity inhibitory influence of extracellular Na on outward Na/K pump current at negative voltages to be impaired in all of the C-terminally truncated pumps. Correspondingly, voltage jump-induced transient charge movements that reflect pump interactions with extracellular Na ions were strongly shifted to more negative potentials; this signals a several-fold reduction of the apparent affinity for extracellular Na in the truncated pumps. Parallel lowering of Na affinity on both sides of the membrane argues that the C-terminal contacts provide important stabilization of the occluded E1P(Na3) conformation, regardless of the route of Na ion entry into the

  17. Genetic Variations in Pattern Recognition Receptor Loci Are Associated with Anti-TNF Response in Patients with Rheumatoid Arthritis

    DEFF Research Database (Denmark)

    Sode, Jacob; Vogel, Ulla; Bank, Steffen

    2015-01-01

    : In a retrospective case-case study, we assessed 23 functional single nucleotide polymorphisms (SNPs) in 15 genes. We included 538 anti-TNF naïve Danish RA patients from the nationwide DANBIO database. Multivariable logistic regression analyses were performed to detect associations (p-value... and European League Against Rheumatism (EULAR) treatment responses. False Discovery Rate corrections for multiple testing (q-value) and stratified analyses were performed to investigate association with individual therapies and IgM-rheumatoid factor (RF) status. RESULTS: Six of twenty successfully genotyped...

  18. Predictions for the anti B0 → anti K*0 X(YZ) and anti Bs0 → φ X(YZ) with X(4160), Y(3940), Z(3930)

    International Nuclear Information System (INIS)

    Liang, Wei-Hong; Molina, R.; Doering, M.; Xie, Ju-Jun; Oset, E.

    2015-01-01

    We investigate the decay of anti B 0 → anti K *0 R and anti B s 0 → φR with R being the X(4160), Y(3940), Z(3930) resonances. Under the assumption that these states are dynamically generated from the vector-vector interaction, as has been concluded from several theoretical studies, we use a reaction mechanism of quark production at the elementary level, followed by hadronization of one final q anti q pair into two vectors and posterior final state interaction of this pair of vector mesons to produce the resonances. With this procedure we are able to predict five ratios for these decays, which are closely linked to the dynamical nature of these states, and also predict the order of magnitude of the branching ratios which we find of the order of 10 -4 , well within the present measurable range. In order to further test the dynamical nature of these resonances we study the anti B s 0 → φ D* anti D* and anti B s 0 → φ D s * anti D s * decays close to the D* anti D* and D s * anti D s * thresholds and make predictions for the ratio of the mass distributions in these decays and the anti B s 0 → φR decay widths. The measurement of these decays rates can help unravel the nature of these resonances. (orig.)

  19. Influence of Anti-Foaming Admixture on Frost Resistance and Porosity Characteristic of Self-Compacting Concrete / Wpływ Domieszki Przeciwpieniacej Na Mrozoodpornosc I Charakterystyke Porowatosci Betonu Samozageszczalnego

    Directory of Open Access Journals (Sweden)

    Łazniewska-Piekarczyk B.

    2011-12-01

    Full Text Available Wcelu obnizenia zbyt duzej zawartosci powietrza w samozageszczalnej mieszance betonowej mozna stosowac domieszki przeciwpieniace (AFA. Efektem stosowania AFA jest takze wzrost srednicy i zmniejszenie czasu rozpływu mieszanki betonowej. Ponadto, utrata urabialnosci SCC w czasie jest mniejsza. Mieszanka betonowa zawierajaca w swym składzie SP i AFA jest bardziej odporna na segregacje w porównaniu do mieszanki betonowej wykonanej tylko z SP. Wpływ AFA na wytrzymałosc SCC zalezy od zastosowanej proporcji miedzy SP i AFA. AFA nie charakteryzuje sie negatywnym wpływem na mrozoodpornosc SCC. Pozytywny wpływ AFA na charakterystyke SCC wykazały rezultaty badan porowatosci SCC wg normy EN 480-11.

  20. Nature is the best source of anti-inflammatory drugs: indexing natural products for their anti-inflammatory bioactivity.

    Science.gov (United States)

    Aswad, Miran; Rayan, Mahmoud; Abu-Lafi, Saleh; Falah, Mizied; Raiyn, Jamal; Abdallah, Ziyad; Rayan, Anwar

    2018-01-01

    The aim was to index natural products for less expensive preventive or curative anti-inflammatory therapeutic drugs. A set of 441 anti-inflammatory drugs representing the active domain and 2892 natural products representing the inactive domain was used to construct a predictive model for bioactivity-indexing purposes. The model for indexing the natural products for potential anti-inflammatory activity was constructed using the iterative stochastic elimination algorithm (ISE). ISE is capable of differentiating between active and inactive anti-inflammatory molecules. By applying the prediction model to a mix set of (active/inactive) substances, we managed to capture 38% of the anti-inflammatory drugs in the top 1% of the screened set of chemicals, yielding enrichment factor of 38. Ten natural products that scored highly as potential anti-inflammatory drug candidates are disclosed. Searching the PubMed revealed that only three molecules (Moupinamide, Capsaicin, and Hypaphorine) out of the ten were tested and reported as anti-inflammatory. The other seven phytochemicals await evaluation for their anti-inflammatory activity in wet lab. The proposed anti-inflammatory model can be utilized for the virtual screening of large chemical databases and for indexing natural products for potential anti-inflammatory activity.

  1. Anti-cancer effect of HIV-1 viral protein R on doxorubicin resistant neuroblastoma.

    Directory of Open Access Journals (Sweden)

    Richard Y Zhao

    Full Text Available Several unique biological features of HIV-1 Vpr make it a potentially powerful agent for anti-cancer therapy. First, Vpr inhibits cell proliferation by induction of cell cycle G2 arrest. Second, it induces apoptosis through multiple mechanisms, which could be significant as it may be able to overcome apoptotic resistance exhibited by many cancerous cells, and, finally, Vpr selectively kills fast growing cells in a p53-independent manner. To demonstrate the potential utility of Vpr as an anti-cancer agent, we carried out proof-of-concept studies in vitro and in vivo. Results of our preliminary studies demonstrated that Vpr induces cell cycle G2 arrest and apoptosis in a variety of cancer types. Moreover, the same Vpr effects could also be detected in some cancer cells that are resistant to anti-cancer drugs such as doxorubicin (DOX. To further illustrate the potential value of Vpr in tumor growth inhibition, we adopted a DOX-resistant neuroblastoma model by injecting SK-N-SH cells into C57BL/6N and C57BL/6J-scid/scid mice. We hypothesized that Vpr is able to block cell proliferation and induce apoptosis regardless of the drug resistance status of the tumors. Indeed, production of Vpr via adenoviral delivery to neuroblastoma cells caused G2 arrest and apoptosis in both drug naïve and DOX-resistant cells. In addition, pre-infection or intratumoral injection of vpr-expressing adenoviral particles into neuroblastoma tumors in SCID mice markedly inhibited tumor growth. Therefore, Vpr could possibly be used as a supplemental viral therapeutic agent for selective inhibition of tumor growth in anti-cancer therapy especially when other therapies stop working.

  2. The Modern Anti-Semitism Israel Model: An empirical relationship between modern anti-Semitism and opposition to Israel

    Directory of Open Access Journals (Sweden)

    Florette Cohen

    2011-04-01

    Full Text Available The current paper reviews our program of research that has examined some of the causes and consequences of anti-Semitism in which a new theoretical model of anti-Semitism is presented and tested in six experiments. The model proposes that mortality salience increases anti-Semitism and that anti-Semitism often manifests as hostility towards Israel. In accord with predictions, results show that existential fears lead to higher anti-Semitism and reduced support for Israel. Collectively, these results may serve as a preliminary contribution to explaining the continuation of anti-Semitism.

  3. Anion-coupled Na efflux mediated by the human red blood cell Na/K pump

    International Nuclear Information System (INIS)

    Dissing, S.; Hoffman, J.F.

    1990-01-01

    The red cell Na/K pump is known to continue to extrude Na when both Na and K are removed from the external medium. Because this ouabain-sensitive flux occurs in the absence of an exchangeable cation, it is referred to as uncoupled Na efflux. This flux is also known to be inhibited by 5 mM Nao but to a lesser extent than that inhibitable by ouabain. Uncoupled Na efflux via the Na/K pump therefore can be divided into a Nao-sensitive and Nao-insensitive component. We used DIDS-treated, SO4-equilibrated human red blood cells suspended in HEPES-buffered (pHo 7.4) MgSO4 or (Tris)2SO4, in which we measured 22Na efflux, 35SO4 efflux, and changes in the membrane potential with the fluorescent dye, diS-C3 (5). A principal finding is that uncoupled Na efflux occurs electroneurally, in contrast to the pump's normal electrogenic operation when exchanging Nai for Ko. This electroneutral uncoupled efflux of Na was found to be balanced by an efflux of cellular anions. (We were unable to detect any ouabain-sensitive uptake of protons, measured in an unbuffered medium at pH 7.4 with a Radiometer pH-STAT.) The Nao-sensitive efflux of Nai was found to be 1.95 +/- 0.10 times the Nao-sensitive efflux of (SO4)i, indicating that the stoichiometry of this cotransport is two Na+ per SO4=, accounting for 60-80% of the electroneutral Na efflux. The remainder portion, that is, the ouabain-sensitive Nao-insensitive component, has been identified as PO4-coupled Na transport and is the subject of a separate paper. That uncoupled Na efflux occurs as a cotransport with anions is supported by the result, obtained with resealed ghosts, that when internal and external SO4 was substituted by the impermeant anion, tartrate i,o, the efflux of Na was inhibited 60-80%. This inhibition could be relieved by the inclusion, before DIDS treatment, of 5 mM Cli,o

  4. Auto-immune anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis: three case reports.

    Science.gov (United States)

    Bashiri, Fahad A; Al-Rasheed, Abdulrahman A; Hassan, Saeed M; Hamad, Muddathir H A; El Khashab, Heba Y; Kentab, Amal Y; AlBadr, Fahad B; Salih, Mustafa A

    2017-08-01

    Anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis is a recently identified auto-immune disorder characterised by severe memory deficit, a decreased level of consciousness, seizures, autonomic dysfunction and movement disorders. Three girls with the disorder are reported; they were aged 4 years, 5 years and 10 months. The 10-month-old infant who is one of the youngest patients reported with anti-NMDAR encephalitis worldwide, had MRI features suggestive of herpes simplex encephalitis (known to trigger anti-NMDAR encephalitis), but CSF PCR for herpes simplex was negative. All the patients presented with seizures, behavioural change, regression of speech, dystonia and choreo-athetosis. Anti-NMDAR antibodies were detected in all patients' sera and cerebrospinal fluid (CSF). Intravenous immunoglobulin, corticosteroids and rituximab were administered at different intervals. Cases 1 and 2 made a full recovery, but case 3 has mild motor and speech delay. Patients who present with encephalopathy, seizures and movement disorders should be tested for anti-NMDAR antibodies in serum and CSF in addition to being screened for herpes simplex encephalitis.

  5. OSP-Immunofluorescent remyelinating oligodendrocytes in the brainstem of toxically-demyelinated Wistar rats Oligodendrócitos remielinizantes positivos para OSP - proteína específica do oligodendrócito- no tronco encefálico de ratos Wistar desmielinizados toxicamente

    Directory of Open Access Journals (Sweden)

    Eliza Simone Viégas Sallis

    2006-06-01

    tronco encefálico de ratos Wistar normais e imunossuprimidos com ciclosporina A. Trinta ratos fêmeas adultas foram divididos em três grupos experimentais. No grupo 1, os ratos receberam uma injeção de 10 miL de BE em 0,9% salina (n=10 na cisterna basal; no grupo 2, os ratos receberam a injeção de BE e foram tratados com ciclosporina A (n=10; no grupo 3 os ratos receberam uma injeção de 10 miL de 0,9% salina e foram tratados com ciclosporina A. Os ratos foram sacrificados aos 15, 21 e 31 dias após a injeção. A partir dos 15 dias muitas células da periferia das lesões tiveram marcação positiva para OSP (proteína específica do oligodendrócito, marcador de oligodendrócitos maduros e mielina. Assim, foi possível comprovar que células maduras da linhagem oligodendroglial participam do processo de remielinização neste modelo gliotóxico.

  6. Seropositivity of HBsAg, anti-HCV and anti-HIV in preoperative patients

    Directory of Open Access Journals (Sweden)

    Berrin Karaayak Uzun

    2014-12-01

    Full Text Available Objective: The infections caused by human immunodeficiency virus (HIV, hepatitis B (HBV and C (HCV viruses pose a serious occupational risk for the healthcare workers especially those in emergency services, laboratories and surgery wards. Vaccination and establishment of the strict biosafety procedures are the main principles to prevent blood-borne infections in healthcare workers. Additionally, serological screening of the preoperative patients could decrease the risk for exposure. In this study, we aimed to determine the seroprevalence of HBsAg, anti-HCV, anti-HIV 1/2 in preoperative patients. Methods: Hospital automation records were evaluated retrospectively for 4.367 patients who were scheduled for surgery and scanned for anti-HIV 1/2, HBsAg and anti-HCV as preoperative procedures in the preparation period of operation between January 2012 and December 2012. Results: HBsAg positivity rate was found in 7.7% (n=336, anti-HCV positivity rate was found in 2.3% (n=101. A two (0.05% of five patients were positive for anti-HIV 1/2 was found positive verification test and the other three samples were accepted as false positive test results. Conclusion: All healthcare workers must be trained about occupational diseases and vaccinated against Hepatitis B. Universal precautions must be strictly followed particularly in the operating room. In addition, all patients should be considered as potential carriers regarded as a carrier of the potential for infection. J Clin Exp Invest 2013; 4 (4: 449-452

  7. Na5NbO5 and Na5TaO5 phases

    International Nuclear Information System (INIS)

    Darriet, J.; Maazaz, A.; Bouloux, J.C.; Delmas, C.

    1982-01-01

    New ternary oxides of formulas Na 5 NbO 5 and Na 5 TaO 5 have been prepared. They crystallize in the monoclinic system (space group C2/c). The crystal structure of Na 5 NbO 5 has been determined. It derives from a NaCl-type structure by ordering of the cations and of the oxygen vacancies in the anionic sublattice, the corresponding formula being Nasub(5/6)Nbsub(1/6)Osub(5/6)vacant sub(1/6). Sodium and niobium have a distorted square-pyramidal surrounding. (author)

  8. Anti-tumor and anti-angiogenic ergosterols from Ganoderma lucidum

    Science.gov (United States)

    Chen, Shaodan; Yong, Tianqiao; Zhang, Yifang; Su, Jiyan; Jiao, Chunwei; Xie, Yizhen

    2017-10-01

    This study was carried out to isolate chemical constituents from the lipid enriched fraction of Ganoderma lucidum extract and to evaluate their anti-proliferative effect on cancer cell lines and human umbilical vein endothelial cells. Ergosterol derivatives (1-14) were isolated from the lipid enriched fraction of G. lucidum. Their structures were established on the basis of spectroscopic analyses or by comparison of mass and NMR spectral data with those reported previously. Amongst, compound 1 was isolated and identified as a new compound. All the compounds were evaluated for their inhibitory effect on tumor cells and human umbilical vein endothelial cells in vitro. Compounds 9-13 displayed inhibitory activity against two tumor cell lines and human umbilical vein endothelial cells, which indicated that these four compounds had both anti-tumor and anti-angiogenesis activities. Compound 2 had significant selective inhibition against two tumor cell lines, while 3 exhibited selective inhibition against human umbilical vein endothelial cells. The structure–activity relationships for inhibiting human HepG2 cells were revealed by 3D-QASR. Ergosterol content in different parts of the raw material and products of G. lucidum was quantified. This study provides a basis for further development and utilization of ergosterol derivatives as natural nutraceuticals and functional food ingredients, or as source of new potential antitumor or anti-angiogenesis chemotherapy agent.

  9. Metformin anti-tumor effect via disruption of the MID1 translational regulator complex and AR downregulation in prostate cancer cells

    International Nuclear Information System (INIS)

    Demir, Ummuhan; Koehler, Andrea; Schneider, Rainer; Schweiger, Susann; Klocker, Helmut

    2014-01-01

    Metformin is an approved drug prescribed for diabetes. Its role as an anti-cancer agent has drawn significant attention because of its minimal side effects and low cost. However, its mechanism of anti-tumour action has not yet been fully clarified. The effect on cell growth was assessed by cell counting. Western blot was used for analysis of protein levels, Boyden chamber assays for analyses of cell migration and co-immunoprecipitation (CoIP) followed by western blot, PCR or qPCR for analysis of protein-protein and protein-mRNA interactions. Metformin showed an anti-proliferative effect on a wide range of prostate cancer cells. It disrupted the AR translational MID1 regulator complex leading to release of the associated AR mRNA and subsequently to downregulation of AR protein in AR positive cell lines. Inhibition of AR positive and negative prostate cancer cells by metformin suggests involvement of additional targets. The inhibitory effect of metformin was mimicked by disruption of the MID1-α4/PP2A protein complex by siRNA knockdown of MID1 or α4 whereas AMPK activation was not required. Findings reported herein uncover a mechanism for the anti-tumor activity of metformin in prostate cancer, which is independent of its anti-diabetic effects. These data provide a rationale for the use of metformin in the treatment of hormone naïve and castration-resistant prostate cancer and suggest AR is an important indirect target of metformin

  10. Análise sistemática da influência do antifator de necrose tumoral [anti-TNF] sobre as taxas de infecção em pacientes com artrite reumatoide

    Directory of Open Access Journals (Sweden)

    Leslie Goh

    2013-12-01

    Full Text Available OBJETIVO: O presente trabalho tem como objetivo fornecer uma análise sistemática da influência do anti-TNF sobre as taxas de infecção em pacientes com artrite reumatoide (AR. MÉTODO: Pesquisamos na Medline para obter informações de controle de qualidade sobre as taxas de infecção em pacientes com AR tratados com anti-TNF. RESULTADOS: Atualmente, uma proporção elevada de pacientes com AR é usuária de agentes anti-TNF. Dados de registros nacionais em países da Europa de pacientes com AR tratados com anti-TNF sugerem que terapias biológicas estão intimamente ligadas à sepse. Apesar de estudos anteriores terem relatado um maior risco de infecções, atualmente há dados emergentes com maior duração de acompanhamento que sugerem um risco ajustado de 1,2. Os pacientes idosos e os com doença de longa data poderão apresentar uma taxa mais elevada de infecções graves em comparação às suas contrapartes mais novas com doença inicial. Hoje, há dados emergentes que sugerem que a terapia com anti-TNF está associada ao desenvolvimento de neutropenia logo após o início do tratamento. Os registros biológicos constataram que os pacientes com ARES tratados com anticorpos monoclonais apresentam aumento no risco de tuberculose (TB, em comparação aos tratados com bloqueadores dos receptores de TNF. Esse risco de infecção precisa ser ponderado em relação aos benefícios estabelecidos dos bloqueadores de TNF. CONCLUSÃO: A evidência atual sugere que o tratamento com anti-TNF na AR está intimamente associado à infecção. Os pacientes precisam estar cientes do risco de infecção, assim como dos benefícios estabelecidos dos bloqueadores de TNF, para que possam fornecer o consentimento informado para o tratamento.

  11. Anti-corrosion mechanism of epoxy-resin and different content Fe2O3 coatings on magnesium alloy

    Science.gov (United States)

    Jin, Tao; Kong, Fan-mei; Bai, Rui-qin; Zhang, Ru-liang

    2016-12-01

    In this study, anti-corrosion coatings were prepared and coated successfully on magnesium alloy substrates by mixing nanopowders, solvent, curing agent with epoxy resin. The effect of the amount of iron trioxide (Fe2O3) on the adhesion strength and corrosion resistance on magnesium alloy was investigated with standard protocols, and electrochemical measurements were also made in 3.5 wt.% NaCl solutions. The surface morphology and corrosion mechanism after corrosion tests was characterized using FESEM analysis. Nanoparticles in matrix acted as filler, and interstitial cross-linked spaces and other coating artifacts regions (micro cracks and voids) would all affect the anti-corrosion properties of coating. The results showed the proper powder content not only provided adhesion strength to these coatings but also improved obviously their anticorrosion. Hydrogen bound to the amine nitrogen (1N) could take part in the curing process rather than hydrogen of the amide site due to the smaller Δ G and the more stable configuration.

  12. Pressure-induced valence and structure change in some anti-Th3P4 structure rare earth compounds

    International Nuclear Information System (INIS)

    Werner, A.; Hochheimer, H.D.; Jayaraman, A.; Bucher, E.

    1981-01-01

    The anti-Th 3 P 4 structure compounds Yb 4 Bi 3 and Yb 4 Sb 3 have been investigated to 350 kbar by high pressure X-ray diffraction, using the diamond anvil cell. From the P-V data it is found that Yb 4 Bi 3 and Yb 4 Sb 3 are much more compressible, compared to Sm 4 Bi 3 before the valence transition. This suggests that a continuous change in the valence state of Yb takes place with pressure in the two compounds and that they may be in the mixed valent state already at ambient pressure. The ''collapsed'' anti-Th 3 P 4 structure becomes unstable in Yb 4 Bi 3 and Yb 4 Sb 3 and new lines appear at high pressure, that fit the NaCl structure. The latter structure change seems to occur also in the electronically collapsed Sm 4 Bi 3 . The results are presented and discussed. (Auth.)

  13. Tropical fruit camu-camu (Myrciaria dubia) has anti-oxidative and anti-inflammatory properties.

    Science.gov (United States)

    Inoue, Teruo; Komoda, Hiroshi; Uchida, Toshihiko; Node, Koichi

    2008-10-01

    Oxidative stress as well as inflammation plays a pivotal role in the pathogenesis of atherosclerosis. Although, various anti-oxidative dietary supplements have been evaluated for their ability to prevent atherosclerosis, no effective ones have been determined at present. "Camu-camu" (Myrciaria dubia) is an Amazonian fruit that offers high vitamin C content. However, its anti-oxidative property has not been evaluated in vivo in humans. To assess the anti-oxidative and anti-inflammatory properties of camu-camu in humans, 20 male smoking volunteers, considered to have an accelerated oxidative stress state, were recruited and randomly assigned to take daily 70 ml of 100% camu-camu juice, corresponding to 1050 mg of vitamin C (camu-camu group; n=10) or 1050 mg of vitamin C tablets (vitamin C group; n=10) for 7 days. After 7 days, oxidative stress markers such as the levels of urinary 8-hydroxy-deoxyguanosine (P<0.05) and total reactive oxygen species (P<0.01) and inflammatory markers such as serum levels of high sensitivity C reactive protein (P<0.05), interleukin (IL)-6 (P<0.05), and IL-8 (P<0.01) decreased significantly in the camu-camu group, while there was no change in the vitamin C group. Our results suggest that camu-camu juice may have powerful anti-oxidative and anti-inflammatory properties, compared to vitamin C tablets containing equivalent vitamin C content. These effects may be due to the existence of unknown anti-oxidant substances besides vitamin C or unknown substances modulating in vivo vitamin C kinetics in camu-camu.

  14. Synthesis of Na-A and/or Na-X zeolite/porous carbon composites from carbonized rice husk

    International Nuclear Information System (INIS)

    Katsuki, Hiroaki; Komarneni, Sridhar

    2009-01-01

    Na-A and/or Na-X zeolite/porous carbon composites were prepared under hydrothermal conditions by NaOH dissolution of silica first from carbonized rice husk followed by addition of NaAlO 2 and in situ crystallization of zeolites i.e., using a two-step process. When a one-step process was used, both Na-A and Na-X zeolites crystallized on the surface of carbon. Na-A or Na-X zeolite crystals were prepared on the porous carbonized rice husk at 90 deg. C for 2-6 h by changing the SiO 2 /Al 2 O 3 , H 2 O/Na 2 O and Na 2 O/SiO 2 molar ratios of precursors in the two-step process. The surface area and NH 4 + -cation exchange capacity (CEC) of Na-A zeolite/porous carbon were found to be 171 m 2 /g and 506 meq/100 g, respectively, while those of Na-X zeolite/porous carbon composites were 676 m 2 /g and 317 meq/100 g, respectively. Na-A and Na-X zeolites are well-known microporous and hydrophilic materials while carbonized rice husk was found to be mesoporous (pores of ∼3.9 nm) and hydrophobic. These hybrid microporous-mesoporous and hydrophilic-hydrophobic composites are expected to be useful for decontamination of metal cations as well as organic contaminants simultaneously. - Graphical Abstract: Novel Na-X zeolite/porous carbon composite.

  15. Equilibrium chemical transformations in NaPO3 + NaCl melts

    International Nuclear Information System (INIS)

    Kovarskaya, E.N.; Rodionov, Yu.I.

    1988-01-01

    Because of the problems of the burial of solidified radioactive wastes into different geological rock formations, in particular into massives of rock-salt, the state of molten polyphosphate-chloride mixtures (taking into account the chemical character of the interaction of their components) for a prolonged period of time. The equilibrium products of the reaction in the NaPO 3 -NaCl system were studied in melts in air in the composition range of 30-70 mole % NaCl. It was shown that with increase in the NaCl content in the mixtures, the polyphosphate gradually depolymerizes to sodium tri-, di-, and monophosphates, and the composition of the equilibrium melts is dependent only on the ratio between the components in the initial molten mixtures. The time until the equilibrium is attained is shorter, the higher is the experimental temperature

  16. Long-Range Effects of Na(+) Binding in Na,K-ATPase Reported by ATP.

    Science.gov (United States)

    Middleton, David A; Fedosova, Natalya U; Esmann, Mikael

    2015-12-01

    This paper addresses the question of long-range interactions between the intramembranous cation binding sites and the cytoplasmic nucleotide binding site of the ubiquitous ion-transporting Na,K-ATPase using (13)C cross-polarization magic-angle spinning (CP-MAS) solid-state nuclear magnetic resonance. High-affinity ATP binding is induced by the presence of Na(+) as well as of Na-like substances such as Tris(+), and these ions are equally efficient promoters of nucleotide binding. CP-MAS analysis of bound ATP with Na,K-ATPase purified from pig kidney membranes reveals subtle differences in the nucleotide interactions within the nucleotide site depending on whether Na(+) or Tris(+) is used to induce binding. Differences in chemical shifts for ATP atoms C1' and C5' observed in the presence of Na(+) or Tris(+) suggest alterations in the residues surrounding the bound nucleotide, hydrogen bonding, and/or conformation of the ribose ring. This is taken as evidence of a long-distance communication between the Na(+)-filled ion sites in the membrane interior and the nucleotide binding site in the cytoplasmic domain and reflects the first conformational change ultimately leading to phosphorylation of the enzyme. Stopped-flow fluorescence measurements with the nucleotide analogue eosin show that the dissociation rate constant for eosin is larger in Tris(+) than in Na(+), giving kinetic evidence of the difference in structural effects of Na(+) and Tris(+). According to the recent crystal structure of the E1·AlF4(-)·ADP·3Na(+) form, the coupling between the ion binding sites and the nucleotide side is mediated by, among others, the M5 helix.

  17. Possible D(*) anti D(*) and B(*) anti B(*) molecular states in the extended constituent quark models

    International Nuclear Information System (INIS)

    Yang, You-Chang; Tan, Zhi-Yun; Ping, Jialun; Zong, Hong-Shi

    2017-01-01

    The possible neutral D (*) anti D (*) and B (*) anti B (*) molecular states are studied in the framework of the constituent quark models, which is extended by including the s-channel one-gluon exchange. Using different types of quark-quark potentials, we solve the four-body Schroedinger equation by means of the Gaussian expansion method. The bound states of D (*) anti D (*) with J PC = 1 ++ , 2 ++ and B (*) anti B (*) with J PC = 0 ++ , 1 +- , 1 ++ , 2 ++ are obtained. The molecular states D* anti D with J PC = 1 ++ and B* anti B with J PC = 1 +- are good candidates for X(3872) and Z 0 b (10610), respectively. The dependence of the results on the model parameters is also discussed. (orig.)

  18. Interaction between Na+/K+-pump and Na+/Ca2+-exchanger modulates intercellular communication.

    Science.gov (United States)

    Matchkov, Vladimir V; Gustafsson, Helena; Rahman, Awahan; Briggs Boedtkjer, Donna M; Gorintin, Sarah; Hansen, Anne Kirstine; Bouzinova, Elena V; Praetorius, Helle A; Aalkjaer, Christian; Nilsson, Holger

    2007-04-13

    Ouabain, a specific inhibitor of the Na(+)/K(+)-pump, has previously been shown to interfere with intercellular communication. Here we test the hypothesis that the communication between vascular smooth muscle cells is regulated through an interaction between the Na(+)/K(+)-pump and the Na(+)/Ca(2+)-exchanger leading to an increase in the intracellular calcium concentration ([Ca(2+)](i)) in discrete areas near the plasma membrane. [Ca(2+)](i) in smooth muscle cells was imaged in cultured rat aortic smooth muscle cell pairs (A7r5) and in rat mesenteric small artery segments simultaneously with force. In A7r5 coupling between cells was estimated by measuring membrane capacitance. Smooth muscle cells were uncoupled when the Na(+)/K(+)-pump was inhibited either by a low concentration of ouabain, which also caused a localized increase of [Ca(2+)](i) near the membrane, or by ATP depletion. Reduction of Na(+)/K(+)-pump activity by removal of extracellular potassium ([K(+)](o)) also uncoupled cells, but only after inhibition of K(ATP) channels. Inhibition of the Na(+)/Ca(2+)-exchange activity by SEA0400 or by a reduction of the equilibrium potential (making it more negative) also uncoupled the cells. Depletion of intracellular Na(+) and clamping of [Ca(2+)](i) at low concentrations prevented the uncoupling. The experiments suggest that the Na(+)/K(+)-pump may affect gap junction conductivity via localized changes in [Ca(2+)](i) through modulation of Na(+)/Ca(2+)-exchanger activity.

  19. Walloons as General or Specific Others? A Comparison of anti-Walloon and anti-immigrant Attitudes in Flanders

    Directory of Open Access Journals (Sweden)

    Bart Meuleman

    2017-11-01

    Full Text Available This study attempts to shed light on the structure, the prevalence and the determinants of anti-Walloon attitudes in Flanders. For this purpose, we contrast anti-Walloon prejudice with prejudice against a relatively well-understood and archetypical out-group, namely immigrants. Our theoretical approach draws on insights from two paradigms of intergroup relations: the Group-Focused Enmity approach stressing that specific prejudices have a strong common denominator, and the Differentiated Threat model arguing that specific prejudices are contingent on the context of intergroup relations as well as the involved types of threat. To assess the (dissimilarities in anti-Walloon and anti-immigrant prejudice, we use the Flemish dataset of the Belgian National Election Study (BNES 2010. Comparable measurement instruments for both forms of prejudice are analyzed by means of structural equation modeling. Our results reveal a nuanced picture regarding the similarities and differences between anti-Walloon and anti-immigrant attitudes in Flanders. One the one hand, anti-Walloon and anti-immigration attitudes are strongly correlated and rooted in economic threat perceptions. On the other hand, anti-Walloon attitudes are less outspoken in the Flemish population than anti-immigrant attitudes, are less founded on cultural threat perceptions and are more closely linked to feelings of identification with the Flemish in-group.

  20. Multiple sclerosis: report on 200 cases from Curitiba, Southern Brazil and comparison with other Brazilian series Esclerose múltipla: descrição de 200 casos de Curitiba, Paraná e comparação com outras séries brasileiras

    Directory of Open Access Journals (Sweden)

    Walter Oleschko Arruda

    2001-06-01

    Full Text Available We reviewed the clinical and laboratorial findings of 200 patients in Curitiba, Southern Brazil (25°25'40" S; 49°16'23" W-GR, with multiple sclerosis (MSaccording to Poser's criteria. The patients were classified as: clinically definite (A1 and A2 - 142 patients (71%; laboratory-supported definite - 42 patients (21%; and clinically probable - 16 patients (8%. Relapsing-remitting (RR form was the most common clinical presentation, with 182 (91%, followed by primary progressive (PP(16 cases, 8%, and only 2 cases with secondarily progressive form (SP. Nine women and 7 men totalized the 16 PP cases. The mean age of onset was 32.0±9.9 (median 32 years. The gender ratio was female 1.8:1 male. All patients, except 3 African-Brazilian, were white. Seven (3.5% patients developed a clinical history of Devic's syndrome. The initial clinical picture included brainstem/cerebellar syndrome in 126 (63% cases, sensorial findings in 106 (53%patients, motor (pyramidal syndrome in 102 (49.5%, and optic neuritis in 79 (39.5% cases. 122 (61% patients had a final EDSS score or = 6.0. There was no significant correlation between the number of relapses or duration of disease with EDSS scores (Spearman's test. Only 14 (7% of the total number presented the benign form (EDSSOs autores analisaram retrospectivamente 200 pacientes portadores de esclerose múltipla de acordo com os critérios de Poser (1983. Cento e quarenta e dois (71% dos casos possuíam a forma clinicamente definida, 42 (21% a forma definida laboratorialmente e 16 (8% a forma clinicamente provável. A forma recorrente-remitente (RR foi a mais comumente observada (182 casos, 91%, seguida pela forma progressiva primária (PP(16 casos, 8%, e somente 2 pacientes com a forma secundariamente progressiva. A idade média de início da doença foi 32,0±9,9 anos (mediana 32 anos.A relação entre os gêneros foi mulheres 1,8:1 homens. Todos os pacientes eram da raça branca, com exceção de 3 pacientes afro

  1. Effects of gamma radiation immunogenicity of ribonucleoprotein (RNPs) of rabies virus and purification of anti-RNPs antibodies for diagnosis; Efeitos da radiacao gama na imunogenicidade das ribonucleoproteinas (RNPs) do virus da raiva e purificacao de anticorpos anti-RNPs para diagnostico

    Energy Technology Data Exchange (ETDEWEB)

    Costa, Ana Elena Boamorte da

    2010-07-01

    The World Health Organization recommends the direct immunofluorescence test for laboratory diagnosis and serological evaluation of rabies. To achieve this test, fluorescent anti-ribo nucleoproteins (RNPs) conjugates, produced from purified IgGs of RNP-immunized animals are employed. The aims of the present study were: investigate the effects of gamma radiation on the immunogenicity of RNPs, as well as to compare two chromatographic methodologies for the purification of anti-RNPs immunoglobulins. Sera from animals immunized with either native or irradiated RNPs were compared by direct immunofluorescence and immuno enzymatic assays. Our results indicate that the animals immunized with irradiated antigen requested a lower number of doses to reach high antibody titers. The immunofluorescence assays indicated that the conjugates produced with the anti-irradiated RNPs IgGs showed similar specificity to its anti-native counterpart, but with a higher definition of the virus inclusions. The purification methods were compared by Bradford and electrophoresis assays. According to the results, we concluded that the affinity-based process resulted in higher yields, lower execution time, and higher purity of the antibodies. (author)

  2. The anti-proliferative and anti-angiogenic effect of the methanol extract from brittle star.

    Science.gov (United States)

    Baharara, Javad; Amini, Elaheh; Mousavi, Marzieh

    2015-04-01

    Anti-angiogenic therapy is a crucial step in cancer treatment. The discovery of new anti-angiogenic compounds from marine organisms has become an attractive concept in anti-cancer therapy. Because little data correlated to the pro- and anti-angiogenic efficacies of Ophiuroidea, which include brittle star, the current study was designed to explore the anti-angiogenic potential of brittle star methanol extract in vitro and in vivo. The anti-proliferative effect of brittle star extract on A2780cp cells was examined by MTT assays, and transcriptional expression of VEGF and b-FGF was evaluated by RT-PCR. In an in vivo model, 40 fertilized Ross eggs were divided into control and three experimental groups. The experimental groups were incubated with brittle star extract at concentrations of 25, 50 and 100 µg/ml, and photographed by photo-stereomicroscopy. Ultimately, numbers and lengths of vessels were measured by Image J software. Data were analyzed with SPSS software (pstar extract exerted a dose- and time-dependent anti-proliferative effect on A2780cp cancer cells. In addition, VEGF and b-FGF expression decreased with brittle star methanol extract treatment. Macroscopic evaluations revealed significant changes in the second and third experimental group compared to controls (pstar methanol extract in vitro and in vivo confer novel insight into the application of natural marine products in angiogenesis-related pathologies.

  3. Intracellular Na(+) and metabolic modulation of Na/K pump and excitability in the rat suprachiasmatic nucleus neurons.

    Science.gov (United States)

    Wang, Yi-Chi; Yang, Jyh-Jeen; Huang, Rong-Chi

    2012-10-01

    Na/K pump activity and metabolic rate are both higher during the day in the suprachiasmatic nucleus (SCN) that houses the circadian clock. Here we investigated the role of intracellular Na(+) and energy metabolism in regulating Na/K pump activity and neuronal excitability. Removal of extracellular K(+) to block the Na/K pump excited SCN neurons to fire at higher rates and return to normal K(+) to reactivate the pump produced rebound hyperpolarization to inhibit firing. In the presence of tetrodotoxin to block the action potentials, both zero K(+)-induced depolarization and rebound hyperpolarization were blocked by the cardiac glycoside strophanthidin. Ratiometric Na(+) imaging with a Na(+)-sensitive fluorescent dye indicated saturating accumulation of intracellular Na(+) in response to pump blockade with zero K(+). The Na(+) ionophore monensin also induced Na(+) loading and hyperpolarized the membrane potential, with the hyperpolarizing effect of monensin abolished in zero Na(+) or by pump blockade. Conversely, Na(+) depletion with Na(+)-free pipette solution depolarized membrane potential but retained residual Na/K pump activity. Cyanide inhibition of oxidative phosphorylation blocked the Na/K pump to depolarize resting potential and increase spontaneous firing in most cells, and to raise intracellular Na(+) levels in all cells. Nonetheless, the Na/K pump was incompletely blocked by cyanide but completely blocked by iodoacetate to inhibit glycolysis, indicating the involvement of both oxidative phosphorylation and glycolysis in fueling the Na/K pump. Together, the results indicate the importance of intracellular Na(+) and energy metabolism in regulating Na/K pump activity as well as neuronal excitability in the SCN neurons.

  4. Green options for anti-sulfate of slag cement concrete containing pozzolans

    Directory of Open Access Journals (Sweden)

    Yang Chien-Jou

    2017-01-01

    Full Text Available This study mainly adopted densified mixture design algorithm (DMDA with pozzolans (fly ash and slag, different fineness slag cement (1:1; MF40 and HF40 and Type I cement (E40 to construct the mixtures for w/cm=0.40, and applied ACI 211.1R and Type II cement as control group (CII40, w/c=0.40. Life cycle inventory of LEED suggested by PCA for cementitious materials (kg/m3 contained cement use, CO2 emission, raw materials, energy consumption, compressive strength, and immersed in different concentration Na2SO4 solution. Results showed cement content, CO2 emission, raw materials and energy consumption for E40, MF40 and HF40, with respect to CII40, were 14% ∼ 26%, 14% ∼ 26%, 13% ∼ 26% and 17%∼28%. At 28 days, compressive strength(all mixtures were greater than 41MPa. Repeatedly 25 cycles, specimens immersed in 5000ppm Na2SO4 solution and oven-dried at 105°C, the exterior had no damage, and weight loss (n and pulse velocity change (nv were less than -1% and -5%. But in saturated Na2SO4 solution, the n and nv were ranged from - 0.91% (E40 to -2.62% (MF40 and -6.7% (E40 to -10.9% (MF40. The exterior had been obviously scaling (chalking or spalling at the second (CII40, the fifth (MF40 and HF40 and the ninth cycle (E40. The comprehensive evaluation of green options for anti-sulfate indicated that the merits of all mixtures were respectively E40 > HF40 > MF40 > CII40.

  5. Elevated N-terminal pro-brain natriuretic peptide levels predict an enhanced anti-hypertensive and anti-proteinuric benefit of dietary sodium restriction and diuretics, but not angiotensin receptor blockade, in proteinuric renal patients.

    Science.gov (United States)

    Slagman, Maartje C J; Waanders, Femke; Vogt, Liffert; Damman, Kevin; Hemmelder, Marc; Navis, Gerjan; Laverman, Gozewijn D

    2012-03-01

    Renin-angiotensin aldosterone system (RAAS) blockade only partly reduces blood pressure, proteinuria and renal and cardiovascular risk in chronic kidney disease (CKD) but often requires sodium targeting [i.e. low sodium diet (LS) and/or diuretics] for optimal efficacy. However, both under- and overtitration of sodium targeting can easily occur. We evaluated whether N-terminal pro-brain natriuretic peptide (NT-proBNP), a biomarker of volume expansion, predicts the benefits of sodium targeting in CKD patients. In a cross-over randomized controlled trial, 33 non-diabetic CKD patients (proteinuria 3.8 ± 0.4 g/24 h, blood pressure 143/86 ± 3/2 mmHg, creatinine clearance 89 ± 5 mL/min) were treated during 6-week periods with placebo, angiotensin receptor blockade (ARB; losartan 100 mg/day) and ARB plus diuretics (losartan 100 mg/day plus hydrochlorothiazide 25 mg/day), combined with LS (93 ± 52 mmol Na(+)/24 h) and regular sodium diet (RS; 193 ± 62 mmol Na(+)/24 h, P diuretics and was normalized by ARB + diuretic + LS [39 (26-59) pg/mL, P = 0.65 versus controls]. NT-proBNP levels above the upper limit of normal (>125 pg/mL) predicted a larger reduction of blood pressure and proteinuria by LS and diuretics but not by ARB, during all steps of the titration regimen. Elevated NT-proBNP levels predict an enhanced anti-hypertensive and anti-proteinuric benefit of sodium targeting, but not RAAS blockade, in proteinuric CKD patients. Importantly, this applies to the untreated condition, as well as to the subsequent treatment steps, consisting of RAAS blockade and even RAAS blockade combined with diuretics. NT-proBNP can be a useful tool to identify CKD patients in whom sodium targeting can improve blood pressure and proteinuria.

  6. Anti-smooth muscle antibody

    Science.gov (United States)

    ... gov/ency/article/003531.htm Anti-smooth muscle antibody To use the sharing features on this page, please enable JavaScript. Anti-smooth muscle antibody is a blood test that detects the presence ...

  7. Synthesis of zeolites Na-A and Na-X from tablet compressed and calcinated coal fly ash

    Science.gov (United States)

    Hu, Tao; Gao, Wenyan; Liu, Xin; Zhang, Yifu; Meng, Changgong

    2017-10-01

    Zeolites Na-A and Na-X are important synthetic zeolites widely used for separation and adsorption in industry. It is of great significance to develop energy-efficient routines that can synthesize zeolites Na-A and Na-X from low-cost raw materials. Coal fly ash (CFA) is the major residue from the combustion of coal and biomass containing more than 85% SiO2 and Al2O3, which can readily replace the conventionally used sodium silicate and aluminate for zeolite synthesis. We used Na2CO3 to replace the expensive NaOH used for the calcination of CFA and showed that tablet compression can enhance the contact with Na2CO3 for the activation of CFA through calcination for the synthesis of zeolites Na-A and Na-X under mild conditions. We optimized the control variables for zeolite synthesis and showed that phase-pure zeolite Na-A can be synthesized with CFA at reactant molar ratio, hydrothermal reaction temperature and reaction time of 1.3Na2O: 0.6Al2O3: 1SiO2: 38H2O at 80°C for 6 h, respectively, while phase-pure zeolite Na-X can be synthesized at 2.2Na2O: 0.2Al2O3: 1SiO2: 88H2O at 100°C for 8 h, respectively. The composition, morphology, specific surface area, vibration spectrum and thermogravimetry of synthesized Na-A and Na-X were further characterized.

  8. The CERES / NA45 experiment

    CERN Multimedia

    Laurent Guiraud

    2000-01-01

    Ceres is one of the second generation heavy ion experiments at CERN's SPS. It is dedicated to the study of electron-positron pairs in relativistic nuclear collisions. NA45 is one of the seven experiments (NA44, NA45, NA49, NA50, NA52, WA97/NA57 and WA98) involved in CERN's Heavy Ion programme which provided evidence for the existence of a new state of matter, the quark-gluon plasma. In this state, quarks, instead of being bound up into more complex particles such as protons and neutrons, are liberated and roam freely. Theory predicts that this state must have existed at about 10 microseconds after the Big Bang, before the formation of matter as we know it today.

  9. anti K-nucleon interactions

    Energy Technology Data Exchange (ETDEWEB)

    Chand, Ramesh

    1963-10-15

    Total scattering and absorption cross sections for anti K-nucleon collisions in I = 1, p3/2 - channel are given as functions of the two sets of energy dependent anti KN scattering parameters solutions, called solution A' and solution B'. These scattering parameters are obtained by linear interpolations between Watson's amplitudes around 400 MeV/c and the amplitude at the position of the pole in the anti KN scattering amplitude corresponding to the p3/2-wave 1385 MeV Y1-resonance with 50 MeV width. The zero-range expansion for p-wave anti K-nucleon phase shift and the scattering parameters of Watson's solution B are found to be in violation of the requirements of causality and of positive definiteness of transition probabilities. (auth)

  10. Anti-inflammatory effects of exercise

    DEFF Research Database (Denmark)

    Pedersen, Bente Klarlund

    2017-01-01

    and IL-10 is provoked by exercise and exerts direct anti-inflammatory effects by an inhibition of TNF-α and by stimulating IL-1ra, thereby limiting IL-1β signalling. Moreover, muscle-derived IL-6 appears to have direct anti-inflammatory effects and serves as a mechanism to improve glucose tolerance....... In addition, indirect anti-inflammatory effects of long-term exercise are mediated via improvements in body composition. CONCLUSION: Physical activity represents a natural, strong anti-inflammatory strategy with minor side effects and should be integrated in the management of patients with cardiometabolic...

  11. Respostas anti-inflamatórias ao exercício terapêutico na osteoartrite de joelho: uma revisão sistemática

    Directory of Open Access Journals (Sweden)

    Rafael Menezes-Reis

    2016-12-01

    Full Text Available Introdução: A osteoartrite (OA de joelho atinge 10% da população mundial com idade de 60 anos ou mais. Citocinas, prostaglandinas e enzimas como IL-6, TNF-α, PCR, metaloproteínases, entre outras, são responsáveis por desencadear o processo inflamatório na articulação, degradação da cartilagem, formação de edema, incapacidades funcionais e dor. Embora o processo de degradação da cartilagem articular seja considerado de difícil reversão, sabe-se que pode ser estabilizado ou prevenido com o exercício físico. O objetivo deste trabalho foi realizar uma revisão sistemática acerca dos efeitos de exercícios terapêuticos sobre o processo inflamatório em indivíduos com osteoartrite de joelho. Métodos: Foi realizada uma busca por artigos originais e em inglês e publicados em periódicos com fator de impacto indexados na base de dados Pubmed. Resultados: Foram encontrados 211 artigos originais, e 16 foram selecionados por se enquadrarem nos critérios de inclusão estabelecidos. Conclusão: O exercício terapêutico promoveu redução dos níveis séricos de citocinas pró-inflamatórias, em especial IL-6, TNF e PCR. Protocolos de exercícios de fortalecimento associados a exercícios aeróbios e dieta alimentar mostraram ser a combinação mais eficaz na redução da resposta inflamatória. O uso de medicamentos associados não interfere nos benefícios do exercício terapêutico na OA de joelho.

  12. Atividades antioxidante, antinociceptiva e anti-inflamatória das folhas de Mucuna pruriens (L. DC Antioxidant, antinociceptive and anti-inflammatory activity of Mucuna pruriens (L. DC. leaves

    Directory of Open Access Journals (Sweden)

    E.V.S. Motta

    2013-01-01

    Full Text Available A espécie Mucuna pruriens (L. DC. (Fabaceae é popularmente conhecida no Brasil como "café berão" e "pó de mico". Suas sementes são bastante estudadas sendo empregadas na medicina popular para o tratamento de desordens nervosas e do aparelho reprodutor, porém poucas informações sobre a composição química e atividade farmacológica das folhas dessa espécie são descritas na literatura. Assim, os objetivos desse estudo foram: a determinação do perfil fitoquímico, a avaliação da atividade antioxidante in vitro, e a avaliação das atividades anti-inflamatória e antinociceptiva in vivo do extrato metanólico das folhas de M. pruriens nas concentrações de 100 e 300 mg/kg. O estudo fitoquímico foi realizado por meio da pesquisa qualitativa dos constituintes químicos e determinação quantitativa do teor de fenóis totais e flavonoides. O potencial antioxidante foi avaliado pelos métodos do DPPH e poder de redução. As atividades anti-inflamatória e antinociceptiva foram a ante foi promissor, com CI50 de 13,2∝g/mL pelo método do DPPH, e CE50 de 47,9∝g/mL pelo método que avalia o poder de redução. Em relação à atividade anti-inflamatória, o extrato foi capaz de inibir o edema de orelha em 63% (100mg/kg e 28% (300mg/kg. Quanto à atividade antinociceptiva, houve redução do número de contorções abdominais de 64% (100 mg/kg e 69% (300 mg/kg. Estes resultados indicam que M. pruriens apresenta um potencial farmacológico promissor e reforçam o conceito de que a pesquisa de plantas com usos etnofarmacológicos pode revelar um número substancial de respostas em ensaios in vitro e in vivo.The species Mucuna pruriens (L. DC. (Fabaceae is popularly known in Brazil as "café berão" and "pó de mico". Its seeds have been widely studied and used in folk medicine for the treatment of nervous and reproductive system disorders; however, few studies are related to the chemical composition and pharmacological activity of its

  13. The rapid-onset dystonia parkinsonism mutation D923N of the Na+, K+-ATPase alpha3 isoform disrupts Na+ interaction at the third Na+ site.

    Science.gov (United States)

    Einholm, Anja Pernille; Toustrup-Jensen, Mads S; Holm, Rikke; Andersen, Jens Peter; Vilsen, Bente

    2010-08-20

    Rapid-onset dystonia parkinsonism (RDP), a rare neurological disorder, is caused by mutation of the neuron-specific alpha3-isoform of Na(+), K(+)-ATPase. Here, we present the functional consequences of RDP mutation D923N. Relative to the wild type, the mutant exhibits a remarkable approximately 200-fold reduction of Na(+) affinity for activation of phosphorylation from ATP, reflecting a defective interaction of the E(1) form with intracellular Na(+). This is the largest effect on Na(+) affinity reported so far for any Na(+), K(+)-ATPase mutant. D923N also affects the interaction with extracellular Na(+) normally driving the E(1)P to E(2)P conformational transition backward. However, no impairment of K(+) binding was observed for D923N, leading to the conclusion that Asp(923) is specifically associated with the third Na(+) site that is selective toward Na(+). The crystal structure of the Na(+), K(+)-ATPase in E(2) form shows that Asp(923) is located in the cytoplasmic half of transmembrane helix M8 inside a putative transport channel, which is lined by residues from the transmembrane helices M5, M7, M8, and M10 and capped by the C terminus, recently found involved in recognition of the third Na(+) ion. Structural modeling of the E(1) form of Na(+), K(+)-ATPase based on the Ca(2+)-ATPase crystal structure is consistent with the hypothesis that Asp(923) contributes to a site binding the third Na(+) ion. These results in conjunction with our previous findings with other RDP mutants suggest that a selective defect in the handling of Na(+) may be a general feature of the RDP disorder.

  14. Measurement of (anti)deuteron and (anti)proton production in DIS at HERA

    International Nuclear Information System (INIS)

    Chekanov, S.; Derrick, M.; Magill, S.

    2007-05-01

    The first observation of (anti)deuterons in deep inelastic scattering at HERA has been made with the ZEUS detector at a centre-of-mass energy of 300-318 GeV using an integrated luminosity of 120 pb -1 . The measurement was performed in the central rapidity region for transverse momentum per unit of mass in the range 0.3 T /M<0.7. The particle rates have been extracted and interpreted in terms of the coalescence model. The (anti)deuteron production yield is smaller than the (anti)proton yield by approximately three orders of magnitude, consistent with the world measurements. (orig.)

  15. Therapeutic effects of date fruits (Phoenix dactylifera) in the prevention of diseases via modulation of anti-inflammatory, anti-oxidant and anti-tumour activity.

    Science.gov (United States)

    Rahmani, Arshad H; Aly, Salah M; Ali, Habeeb; Babiker, Ali Y; Srikar, Sauda; Khan, Amjad A

    2014-01-01

    The current mode of treatment of various diseases based on synthetic drugs is expensive, alters genetic and metabolic pathways and also shows adverse side effects. Thus, safe and effective approach is needed to prevent the diseases development and progression. In this vista, Natural products are good remedy in the treatment/management of diseases and they are affordable and effective without any adverse effects. Dates are main fruit in the Arabian Peninsula and are considered to be one of the most significant commercial crops and also have been documented in Holy Quran and modern scientific literatures. Earlier studies have shown that constituents of dates act as potent antioxidant, anti-tumour as well as anti-inflammatory, provide a suitable alternative therapy in various diseases cure. In this review, dates fruits has medicinal value are summarized in terms of therapeutic implications in the diseases control through anti-oxidant, anti-inflammatory, anti-tumour and ant-diabetic effect.

  16. Recikliranje plastenk na kreativen način

    OpenAIRE

    Pavlin, Suzana

    2017-01-01

    Plastenke, poleg ostalih plastičnih izdelkov, v zadnjih letih predstavljajo pravo katastrofo za okolje. Domnevamo, da se le redko kdo vpraša, kaj se zgodi z njo po tem, ko je iz nje zaužil še zadnjo kapljico vode. Plastenka je lahko kot večina ostalih komunalnih odpadkov ponovno uporabljena, reciklirana, sežgana ali odložena na deponijo. V primeru nespoštovanja Zakona o varstvu okolja pa pristane v naravi, pogosto v morju, kjer prav počasi razpada in negativno vpliva na celoten ekosistem. V d...

  17. Seroprevalences of anti-Sarcocystis neurona and anti-Neospora hughesi antibodies among healthy equids in the United States.

    Science.gov (United States)

    James, Kaitlyn E; Smith, Woutrina A; Conrad, Patricia A; Packham, Andrea E; Guerrero, Leopoldo; Ng, Mitchell; Pusterla, Nicola

    2017-06-01

    OBJECTIVE To describe the general seroprevalence of anti-Sarcocystis neurona and anti-Neospora hughesi antibodies among healthy equids by use of indirect fluorescent antibody tests and determine potential risk factors for seropositivity. DESIGN Cross-sectional study. SAMPLE Whole blood samples collected from 5,250 equids (1 sample/animal) across 18 states in the United States during October 2013. PROCEDURES Information regarding potential risk factors (geographic region, breed, primary use, sex, and age) was collected along with the blood samples. For each equid, an indirect fluorescent antibody test was used to determine serum titers of antibody against each of the 2 protozoal parasites. Mixed-effects logistic regression models were created to determine ORs for seropositivity. RESULTS The overall seroprevalence of anti-S neurona and anti-N hughesi antibodies in the tested equids was 78% and 34%, respectively. Of the equids, 31% were seropositive and 18% were seronegative for antibodies against both parasites. Factors associated with equids being seropositive for anti-S neurona antibodies were residence in the South, warmblood breed, and age > 5 years. Seroprevalence of anti-N hughesi antibodies did not differ among equids in different states across the country, but warmblood breed and age > 5 years were associated with seropositivity. CONCLUSIONS AND CLINICAL RELEVANCE With regard to risk factors for S neurona and N hughesi exposure and antibody response among tested equids, older age was not unexpected; however, the influences of warmblood breed and geographic location on seropositivity for anti-S neurona antibody but not for anti-N hughesi antibody deserve further investigation.

  18. Plant Defensins NaD1 and NaD2 Induce Different Stress Response Pathways in Fungi

    Directory of Open Access Journals (Sweden)

    Peter M. Dracatos

    2016-09-01

    Full Text Available Nicotiana alata defensins 1 and 2 (NaD1 and NaD2 are plant defensins from the ornamental tobacco that have antifungal activity against a variety of fungal pathogens. Some plant defensins interact with fungal cell wall O-glycosylated proteins. Therefore, we investigated if this was the case for NaD1 and NaD2, by assessing the sensitivity of the three Aspergillus nidulans (An O-mannosyltransferase (pmt knockout (KO mutants (An∆pmtA, An∆pmtB, and An∆pmtC. An∆pmtA was resistant to both defensins, while An∆pmtC was resistant to NaD2 only, suggesting NaD1 and NaD2 are unlikely to have a general interaction with O-linked side chains. Further evidence of this difference in the antifungal mechanism was provided by the dissimilarity of the NaD1 and NaD2 sensitivities of the Fusarium oxysporum f. sp. lycopersici (Fol signalling knockout mutants from the cell wall integrity (CWI and high osmolarity glycerol (HOG mitogen-activated protein kinase (MAPK pathways. HOG pathway mutants were sensitive to both NaD1 and NaD2, while CWI pathway mutants only displayed sensitivity to NaD2.

  19. Glutamate Water Gates in the Ion Binding Pocket of Na(+) Bound Na(+), K(+)-ATPase

    DEFF Research Database (Denmark)

    Han, Minwoo; Kopec, Wojciech; Solov'yov, Ilia A

    2017-01-01

    III is always protonated. Glutamic acid residues in the three binding sites act as water gates, and their deprotonation triggers water entry to the binding sites. From DFT calculations of Na(+) binding energies, we conclude that three protons in the binding site are needed to effectively bind Na......The dynamically changing protonation states of the six acidic amino acid residues in the ion binding pocket of the Na(+), K(+) -ATPase (NKA) during the ion transport cycle are proposed to drive ion binding, release and possibly determine Na(+) or K(+) selectivity. We use molecular dynamics (MD......(+) from water and four are needed to release them in the next step. Protonation of Asp926 in site III will induce Na(+) release, and Glu327, Glu954 and Glu779 are all likely to be protonated in the Na(+) bound occluded conformation. Our data provides key insights into the role of protons in the Na...

  20. Direct anti-atherosclerotic therapy; development of natural anti-atherosclerotic drugs preventing cellular cholesterol retention.

    Science.gov (United States)

    Orekhov, Alexander N

    2013-01-01

    The results of numerous clinical trials with statins and other drugs have demonstrated the principal possibility of the prevention and regression of atherosclerosis by pharmacotherapy. This review describes the use of cultured human arterial cells for the mass screening of anti-atherosclerotic substances, the investigation of the mechanisms responsible for their atherosclerosis-related effects, and the optimization of anti-atherosclerotic and anti-atherogenic drug and dietary therapies. Natural products can be considered promising drugs for anti-atherosclerotic therapy. Our basic studies have shown that cellular lipidosis is the principal event in the genesis of atherosclerotic lesions. Using cellular models and natural products, we have developed an approach to prevent lipid accumulation in arterial cells. Based on our knowledge of atherosclerosis, we developed drugs that possess direct anti-atherosclerotic activity. Two-year treatment with allicor (garlic powder) has a direct anti-atherosclerotic effect on carotid atherosclerosis in asymptomatic men. Inflaminat (calendula, elder, and violet), which possesses anti-cytokine activity, has been shown to cause the regression of carotid atherosclerosis following the treatment of asymptomatic men for one year. The phytoestrogen-rich drug karinat (garlic powder, extract of grape seeds, green tea leaves, hop cones, β-carotene, α-tocopherol, and ascorbic acid) prevents the development of carotid atherosclerosis in postmenopausal women. Thus, our basic findings were successfully translated into clinical practice. Because of this translation, a novel approach to antiatherosclerotic therapy was developed. Our clinical trial confirmed the efficacy of both the novel approach and the novel drugs.

  1. A outra juventude radicalizada: o anticomunismo na Argentina e no Chile (1959-1973 = The other radicalised youth: anti-communism in Argentina and Chile (1959-1973

    Directory of Open Access Journals (Sweden)

    Bohoslavsky, Ernesto

    2016-01-01

    Full Text Available A imagem dominante sobre os anos sessenta no Cone Sul faz referência aos processos de insubordinação social desenvolvidos por setores da população rural, trabalhadores urbanos e jovens de ambos os sexos, desencantados com a política formal e desejosos de promover mudanças sociais profundas. Entretanto, é possível identificar outra série de atores que também recorreram a um repertório de ações políticas de forte impacto público, mas sediados em uma coordenada ideológica completamente diversa. Este artigo revisa algumas das práticas e discursos de grupos de jovens incorporados às organizações de direita radical na Argentina e no Chile entre 1959 e 1973. Concentra-se no Movimiento gremialista, na juventude do Partido Nacional, na Frente Nacionalista Patria y Libertad (do Chile, no Movimiento Nacionalista Tacuara e na juventude da Federación Argentina de Entidades Democráticas Anticomunistas (da Argentina. Esta pesquisa comparativa consultou distintas fontes: imprensa comercial, jornais partidários e relatórios de órgãos de inteligência policial

  2. Anti-biofilm and anti-adherence activities of sub fraction 18 of Melastoma malabathricum towards Streptococcus mutans

    Science.gov (United States)

    Rohazila M., H.; Nazlina, I.; Yaacob W., A.

    2014-09-01

    A study was carried out to isolate and identify the active compounds from Melastoma malabathricum stem bark that exhibit anti-biofilm and anti-adherence activities against Streptococcus mutans. Purification of the active compounds from the stem bark extract was performed via silica gel chromatography to produce 12 fractions. Further fractionation of fraction 9 by high performance liquid chromatography (HPLC) produced 21 sub fractions. All the sub fractions were subjected to thin layer chromatography (TLC) bioautography as preliminary screening to determine anti bacterial activity. TLC-bioautography showed that sub fraction 18 (SF18) demonstrated large inhibited zone against S. mutans. Gas chromatography mass spectrometry (GCMS) was used to identify the active compounds in SF18. Fraction SF18 revealed 27 compounds such as hexanoic acid, 8-methyl-1-undecene, propanenitrile, and 1-decene. Anti-biofilm and anti-adherence activities were determined using crystal violet and glass surface assays respectively. The concentrations that produced 50% reduction in anti-biofilm and anti-adherence activities were 1.88 mg/ml and 3.75 mg/ml respectively.

  3. GC-MS analysis, evaluation of phytochemicals, anti-oxidant, thrombolytic and anti-inflammatory activities of Exacum bicolor

    Directory of Open Access Journals (Sweden)

    Appaji Mahesh Ashwini

    2015-12-01

    Full Text Available The aim of the present study was to investigate the GC-MS analysis, phytochemical screening, anti-oxidant, thrombolytic and anti-inflammatory activities of methanol extract of leaves of Exacum bicolor. FTIR analysis confirmed the presence of alcohol, phenols, alkanes, aromatic compounds, aldehyde and ethers. GC-MS analysis revealed the presence of eight phyto-constituents. The total phenol, flavonoid and alkaloid contents were 18.0 ± 0.2 mg/GAE/g, 13.1 ± 0.4 mg QE/g and 108.0 ± 1.2 mg AE/g respectively. The DPPH assay exhibited potent anti-oxidant abilities with IC50 8.8 µg/mL. Significant thrombolytic activity was demonstrated by clot lysis method (45.1 ± 0.8%. The methanol extract showed significant membrane stabilization on human red blood cell with IC50 value of 37.4 µg/mL. There was a significant correlation (R2>0.98 with total phenolic content versus anti-oxidant and anti-inflammatory activity. The above results confirmed that E. bicolor could be a promising anti-oxidant, thrombolytic and anti-inflammatory agent.

  4. EU Lobbying and Anti-Dumping Policy

    DEFF Research Database (Denmark)

    Nielsen, Jørgen Ulff-Møller; Svendsen, Gert Tinggaard

    2012-01-01

    of petitioning firms and Council voting in the case of anti-dumping policy. If the political position of countries in anti-dumping cases is influenced by domestic lobbying efforts, we expect that the empirical pattern of country distribution of petitioning firms in EU anti-dumping cases corresponds closely...... to the empirical pattern of EU country distribution in Council voting. Our results show a low petitioning intensity for anti-dumping investigations and a high voting intensity against anti-dumping measures in Northern Europe. Thus, it seems likely that domestic lobbying efforts have influenced the political...

  5. Online Anti-Brand Herds

    DEFF Research Database (Denmark)

    Langley, David J.; Tan, Chee-Wee; Worm, Daniël

    The online environment offers a fertile breeding ground for anti-brand herds of disgruntled consumers. Firms are often caught off guard by the unpredictability of such herds and, as a consequence, are forced into a reactive, defensive stance. We conduct a social media analysis that aims to shed...... light on the formation, growth, and dissolution of online anti-brand herds. First we expand on the concept of environmental turbulence to advance core properties unique to online herd behavior. Next, based on evidence gathered from 40 online anti-brand herd episodes targeting two prominent firms from...... the Netherlands, we develop an analytical model to investigate drivers of herd formation, growth, and dissolution. Finally, combining environmental turbulence literature with our empirical findings, we derive a novel typology of online anti-brand herd behaviors, and put forward six propositions to guide theory...

  6. Anti-deuteron sensitivity studies at LHCb

    CERN Multimedia

    Baker, Sophie Katherine

    2018-01-01

    Measurements of anti-deuterons in collider experiments can help to reduce systematic uncertainties in indirect searches for dark matter. Two predominant unknowns in these searches are the production of secondary anti-deuterons in the cosmos from spallation processes, and anti-deuteron production from annihilating dark matter. LHCb is a forward spectrometer on the LHC ring, designed to measure b-hadron decays from high energy proton-proton collisions. With the detector's excellent particle identification capabilities, deuteron and anti-deuteron measurements at LHCb could help to parametrise the two cosmological processes. Recent studies of (anti-)deuteron identification at LHCb and the prospects for measuring prompt (anti-)deuterons from pp-collisions will be presented, as well as a working analysis of b-baryrons decaying to deuterons.

  7. NA62 and NA48/2 results on search for Heavy Neutral Leptons

    Directory of Open Access Journals (Sweden)

    Lamanna Gianluca

    2018-01-01

    Full Text Available In this paper we present new results on upper limits for the search of Heavy Neutral Leptons (HNL with data collected by NA48/2 (2003-2004, NA62-RK (2007 and NA62 (2015 CERN experiments. The data collected with different trigger configuration allow to search for both long and short living heavy neutrinos in the mass range below the kaon mass. In addition the status of the search for K+ → π+vv with the NA62 detector will be briefly presented.

  8. Transformations in French Anti-Semitism

    Directory of Open Access Journals (Sweden)

    Nonna Mayer

    2007-01-01

    Full Text Available The increase in the number of anti-Semitic acts since the start of the Second Intifada has sparked off a broad debate on the return of anti-Semitism in France. This article focuses on the question whether this anti-Semitism is still based on the alleged superiority of the Aryan race as in the time of Nazism, or if it represents the birth of a “new Judeophobia” that is more based on anti-Zionism and the polemical mixing of “Jews,” “Israelis,” and “Zionists.” One supposed effect of this transformation is that anti-Semitism is in the process of changing camps and migrating from the extreme right to the extreme left of the political arena, to the “altermondialistes,” the communists, and the “neo-Trotskyists.”

  9. Hipometabolismo cerebral em pacientes com esclerose mesial temporal demonstrado pelo FDG-PET Brain hypometabolism in patients with mesial-temporal sclerosis demonstrated by FDG-PET

    Directory of Open Access Journals (Sweden)

    PAULO S. DUARTE

    2000-09-01

    Full Text Available O objetivo deste estudo foi avaliar a extensão do hipometabolismo cerebral em pacientes com esclerose mesial temporal (EMT. MÉTODO: Este estudo retrospectivo incluiu 21 pacientes que apresentavam epilepsia parcial complexa refrataria à terapia e que foram selecionados para cirurgia após análise extensa que incluía: EEG de superfície e estudos de neuroimagem (PET, SPECT e ressonância magnética. Todos os pacientes foram submetidos a intervenção cirúrgica e tiveram confirmação histológica de EMT. Uma análise semi-quantitativa foi realizada, utilizando regiões de interesse (ROIs nas seguintes estruturas: lobos frontais, parietais e occipitais, gânglios da base, tálamos, cerebelo e três diferentes regiões nos lobos temporais, que compreendiam o córtex medial, inferior e lateral. Um índice de assimetria (IA foi calculado, comparando as contagens por pixel nas estruturas homólogas em ambos os hemisférios cerebrais. Os IAs das diferentes estruturas foram então correlacionados. RESULTADOS: Uma correlação significativa foi demonstrada entre os IAs do córtex medial dos lobos temporais e aqueles dos lobos frontais, dos lobos parietais, dos gânglios da base e dos tálamos (r = 0,72, 0,62, 0,47 e 0,47 respectivamente com p The purpose of this study was to evaluate the extent of brain hypometabolism in patients with mesial-temporal sclerosis (MTS. METHOD: This retrospective study included 21 patients who had medically refractory complex partial seizures and were selected for surgical therapy after a comprehensive evaluation which included surface EEG recordings and neuroimaging studies (PET, SPECT and MRI. All patients were subjected to surgical intervention and had an histopathological confirmation of MTS. A semi-quantitative analysis of the PET images was performed using regions of interest in the following structures: frontal, parietal and occipital lobes, basal ganglia, thalami, cerebellum and three different regions in the

  10. Analysis of the association between Epstein-Barr virus and classic Hodgkin’s lymphoma in adult patients from Ceará (Brazil by immunohistochemistry and in situ hybridization Análise da associação do vírus Epstein-Barr com a forma clássica do linfoma de Hodgkin em adultos do estado do Ceará: avaliação por imuno-histoquímica e hibridização in situ

    Directory of Open Access Journals (Sweden)

    Marília Taumaturgo Pinto

    2006-06-01

    Full Text Available The prevalence of Epstein-Barr virus (EBV in patients with classical Hodgkin’s lymphoma (CHL is geographically variable. In the present study the prevalence of EBV in CHL was assessed in adult patients from Ceará, Brazil. Thirty-seven cases were immunohistochemically evaluated for EBV using latent membrane protein (LMP1 antibody and for EBV latency-associated RNA (EBER1 using in situ hybridization (ISH. Sex and age did not differ among patients as to the frequency of CHL. Nodular sclerosis was the predominant histological subtype. LMP1 was found in Reed-Sternberg cells in 67.5% of the cases whereas ISH detected EBER1 in 75.6%. Regarding histological subtypes EBV infection rates were not found statistically different in nodular sclerosis (NS and mixed cellularity (MC subtypes (p = 0.66.A freqüência do vírus Epstein-Barr (EBV em pacientes com linfoma de Hodgkin Clássico (LHC sofre variabilidade geográfica. No presente estudo investigamos a freqüência do EBV em pacientes com LHC no estado do Ceará. Trinta e sete casos de linfoma de Hodgkin clássico foram avaliados por imuno-histoquímica para EBV usando o anticorpo monoclonal contra a proteína latente da membrana (LMP1 e pelo método de hibridização in situ para RNA associado ao EBV (EBER1. Não há diferença por sexo e idade dos pacientes no que concerne à freqüência de LHC. O subtipo histológico esclerose nodular foi predominante. LMP1 esteve presente em células Reed-Sternberg em 67,5% e pela hibridização in situ, através da sonda EBER, foi evidente em 75,6% dos casos. Não observamos predominância significativa da associação de EBV com os subtipos histológicos esclerose nodular (EN e celularidade mista (CM (p = 0,66.

  11. Consumption of high-dose vitamin C (1250 mg per day) enhances functional and structural properties of serum lipoprotein to improve anti-oxidant, anti-atherosclerotic, and anti-aging effects via regulation of anti-inflammatory microRNA.

    Science.gov (United States)

    Kim, Seong-Min; Lim, So-Mang; Yoo, Jeong-Ah; Woo, Moon-Jea; Cho, Kyung-Hyun

    2015-11-01

    Background Although the health effects of vitamin C are well known, its physiological effect on serum lipoproteins and microRNA still remain to be investigated, especially daily consumption of a high dosage. Objectives To investigate the physiological effect of vitamin C on serum lipoprotein metabolism in terms of its anti-oxidant and anti-glycation activities, and gene expression via microRNA regulation. Methods We analyzed blood parameters and lipoprotein parameters in young subjects (n = 46, 22 ± 2 years old) including smokers who consumed a high dose of vitamin C (1250 mg) daily for 8 weeks. Results Antioxidant activity of serum was enhanced with the elevation of Vit C content in plasma during 8 weeks consumption. In the LDL fraction, the apo-B48 band disappeared at 8 weeks post-consumption in all subjects. In the HDL fraction, apoA-I expression was enhanced by 20% at 8 weeks, especially in male smokers. In the lipoprotein fraction, all subjects showed significantly reduced contents of advanced glycated end products and reactive oxygen species (ROS). Triglyceride (TG) contents in each LDL and HDL fraction were significantly reduced in all groups following the Vit C consumption, suggesting that the lipoprotein was changed to be more anti-inflammatory and atherogenic properties. Phagocytosis of LDL, which was purified from each individual, into macrophages was significantly reduced at 8-weeks post-consumption of vitamin C. Anti-inflammatory and anti-senescence effects of HDL from all subjects were enhanced after the 8-weeks consumption. The expression level of microRNA 155 in HDL3 was reduced by 49% and 75% in non-smokers and smokers, respectively. Conclusion The daily consumption of a high dose of vitamin C for 8 weeks resulted in enhanced anti-senescence and anti-atherosclerotic effects via an improvement of lipoprotein parameters and microRNA expression through anti-oxidation and anti-glycation, especially in smokers.

  12. Transmural gradients in Na/K pump activity and [Na+]I in canine ventricle.

    Science.gov (United States)

    Gao, J; Wang, W; Cohen, I S; Mathias, R T

    2005-09-01

    There are well-documented differences in ion channel activity and action potential shape between epicardial (EPI), midmyocardial (MID), and endocardial (ENDO) ventricular myocytes. The purpose of this study was to determine if differences exist in Na/K pump activity. The whole cell patch-clamp was used to measure Na/K pump current (I(P)) and inward background Na(+)-current (I(inb)) in cells isolated from canine left ventricle. All currents were normalized to membrane capacitance. I(P) was measured as the current blocked by a saturating concentration of dihydro-ouabain. [Na(+)](i) was measured using SBFI-AM. I(P)(ENDO) (0.34 +/- 0.04 pA/pF, n = 17) was smaller than I(P)(EPI) (0.68 +/- 0.09 pA/pF, n = 38); the ratio was 0.50 with I(P)(MID) being intermediate (0.53 +/- 0.13 pA/pF, n = 19). The dependence of I(P) on [Na(+)](i) or voltage was essentially identical in EPI and ENDO (half-maximal activation at 9-10 mM [Na(+)](i) or approximately -90 mV). Increasing [K(+)](o) from 5.4 to 15 mM caused both I(P)(ENDO) and I(P)(EPI) to increase, but the ratio remained approximately 0.5. I(inb) in EPI and ENDO were nearly identical ( approximately 0.6 pA/pF). Physiological [Na(+)](i) was lower in EPI (7 +/- 2 mM, n = 31) than ENDO (12 +/- 3 mM, n = 29), with MID being intermediate (9 +/- 3 mM, n = 22). When cells were paced at 2 Hz, [Na(+)](i) increased but the differences persisted (ENDO 14 +/- 3 mM, n = 10; EPI 9 +/- 2 mM, n = 10; and MID intermediate, 11 +/- 2 mM, n = 9). Based on these results, the larger I(P) in EPI appears to reflect a higher maximum turnover rate, which implies either a larger number of active pumps or a higher turnover rate per pump protein. The transmural gradient in [Na(+)](i) means physiological I(P) is approximately uniform across the ventricular wall, whereas transporters that utilize the transmembrane electrochemical gradient for Na(+), such as Na/Ca exchange, have a larger driving force in EPI than ENDO.

  13. Measurement of (anti)deuteron and (anti)proton production in DIS at HERA

    Energy Technology Data Exchange (ETDEWEB)

    Chekanov, S.; Derrick, M.; Magill, S. [Argonne National Laboratory, Argonne, IL (US)] (and others)

    2007-05-15

    The first observation of (anti)deuterons in deep inelastic scattering at HERA has been made with the ZEUS detector at a centre-of-mass energy of 300-318 GeV using an integrated luminosity of 120 pb{sup -1}. The measurement was performed in the central rapidity region for transverse momentum per unit of mass in the range 0.3anti)deuteron production yield is smaller than the (anti)proton yield by approximately three orders of magnitude, consistent with the world measurements. (orig.)

  14. Dermatologia comparativa Comparative Dermatology

    Directory of Open Access Journals (Sweden)

    Hiram Larangeira de Almeida Jr

    2005-06-01

    Full Text Available Demonstra-se o quadro exuberante dos angiofibromas faciais em paciente do sexo masculino, de 32 anos, com esclerose tuberosa, os quais podem ser comparados com amoras.The impressive facial angiofibromas, from a 32 year-old male paciente, with the classical features of tuberous sclerosis, were compared with mulberries.

  15. Terapia anti-hipertensiva utilizada por pacientes idosos de Porto Alegre/RS, Brasil = Antihypertensive therapy used by elderly patients from Porto Alegre/RS, Brazil

    Directory of Open Access Journals (Sweden)

    Schroeter, Guilherme

    2006-01-01

    Conclusões: Os diuréticos, inibidores da ECA e betabloqueadores foram os anti-hipertensivos mais utilizados. Muitas vezes o usuário comete erros na medicação, o que pode ser resolvido com uma assistência correta a esse paciente. Diante da prevalência da hipertensão entre os idosos, observa-se a necessidade de uma maior atenção dos profissionais de saúde a esses pacientes

  16. Sero-Prevalence of anti-sperm anti-bodies in infertile males in Port ...

    African Journals Online (AJOL)

    Background: Infertility is a serious health challenge which causes distress to the couples especially; in Africa. The cause of infertility is multifactorial. Immunological infertility is said to be one of the major causes of unexplained infertility in men. Anti-sperm anti-bodies can be used as an immunological marker of infertility.

  17. Reactions of metal oxides with molten NaPO3 + NaCl mixtures

    International Nuclear Information System (INIS)

    Kovarskaya, E.N.; Mityakhina, V.S.; Rodionov, Yu.I.; Silin, M.Yu.

    1988-01-01

    We consider the dissolution mechanism for iron (III), europium(III), and tin(IV) oxides in molten NaPO 3 + NaCl that are responsible for the peak solubilities. We chose Fe 2 O 3 as the basic material since this occurs in large amounts around damaged metal structures in rock salt mines in a proposed zone for storing vitrified radioactive wastes. Solubility measurement and paper chromatography show that Fe 2 O 3 dissolves in molten NaPO 3 + NaCl in air by reaction with the solvent to give double iron and sodium diphosphates and monophosphates in accordance with the initial solution-in-the-melt composition, the degree of equilibration, and the temperature. The elevated solubilities for initial NaCl contents close to 30 mole % are due to sodium triphosphates and tricyclophosphates present in these melts. Moessbauer spectroscopy confirms that double iron, europium and tin diphosphates and monophosphates containing sodium occur in these chloride-polyphosphate melts

  18. Progressive systemic sclerosis: high-resolution computed tomography findings; Esclerose sistemica progressiva: aspectos na tomografia computadorizada de alta resolucao

    Energy Technology Data Exchange (ETDEWEB)

    Gasparetto, Emerson L.; Pimenta, Rodrigo; Ono, Sergio E.; Escuissato, Dante L. [Parana Univ., Curitiba, PR (Brazil). Hospital de Clinicas. Servico de Radiologia Medica]. E-mail: dante.luiz@onda.com.br; Inoue, Cesar [Parana Univ., Curitiba, PR (Brazil). Faculdade de Medicina

    2005-09-15

    Objective: To describe the high-resolution computed tomography findings in the lung of patients with systemic sclerosis, independently of the respiratory symptoms. Materials and methods: Seventy-three high-resolution computed tomography scans of 44 patients with clinical diagnosis of systemic sclerosis were reviewed and defined by the consensus of two radiologists. Results: Abnormalities were seen in 91.8% (n = 67) of the scans. The most frequent findings were reticular pattern (90.4%), ground-glass opacities (63%), traction bronchiectasis and bronchiolectasis (56.2%), esophageal dilatation (46.6%), honeycombing pattern (28.8%) and signs of pulmonary hypertension (15.6%). In most cases the lesions were bilateral (89%) and symmetrical (58.5%). The lesions were predominantly located in the basal (91.2%) and peripheral (92.2%) regions. Conclusion: In the majority of the patients, progressive systemic sclerosis can cause pulmonary fibrosis mainly characterized by reticular pattern with basal and peripheral distribution on high-resolution computed tomography. (author)

  19. Na(+),K (+)-ATPase as a docking station: protein-protein complexes of the Na(+),K (+)-ATPase.

    Science.gov (United States)

    Reinhard, Linda; Tidow, Henning; Clausen, Michael J; Nissen, Poul

    2013-01-01

    The Na(+),K(+)-ATPase, or sodium pump, is well known for its role in ion transport across the plasma membrane of animal cells. It carries out the transport of Na(+) ions out of the cell and of K(+) ions into the cell and thus maintains electrolyte and fluid balance. In addition to the fundamental ion-pumping function of the Na(+),K(+)-ATPase, recent work has suggested additional roles for Na(+),K(+)-ATPase in signal transduction and biomembrane structure. Several signaling pathways have been found to involve Na(+),K(+)-ATPase, which serves as a docking station for a fast-growing number of protein interaction partners. In this review, we focus on Na(+),K(+)-ATPase as a signal transducer, but also briefly discuss other Na(+),K(+)-ATPase protein-protein interactions, providing a comprehensive overview of the diverse signaling functions ascribed to this well-known enzyme.

  20. Characterization of Na+-linked and Na+-independent Cl-/HCO3- exchange systems in Chinese hamster lung fibroblasts

    International Nuclear Information System (INIS)

    Cassel, D.; Scharf, O.; Rotman, M.; Cragoe, E.J. Jr.; Katz, M.

    1988-01-01

    The PS120 variant of Chinese hamster lung fibroblasts which lacks Na + /H + exchange activity was used to investigate bicarbonate transport systems and their role in intracellular pH (pH/sub i/) regulation. When pH/sub i/ was decreased by acid load, bicarbonate caused pH/sub i/ increase and stimulated 36 Cl - efflux from the cells, both in a Na + -dependent manner. These results together with previous findings that bicarbonate stimulates 22 Na + uptake in PS120 cells demonstrate the presence of a Na + -linked Cl - /HCO 3 - exchange system. In cells with normal initial pH/sub i/, bicarbonate caused Na + -independent pH/sub i/ increase in Cl - -free solutions and stimulated Na + -independent 36 Cl - efflux, indicating that a Na + -independent Cl - /HCO 3 - exchanger is also present in the cell. Na + -linked and Na + -independent Cl - /HCO 3- exchange is apparently mediated by two distinct systems, since a [(tetrahydrofluorene-7-yl)oxy]acetic acid derivative selectively inhibits the Na + -independent exchanger. An additional distinctive features is a 10-fold lower affinity for chloride of the Na + -linked exchanger. The Na + -linked and Na + -independent Cl - /HCO 3 - exchange systems are likely to protect the cell from acid and alkaline load, respectively