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Sample records for invasiva pelo streptococcus

  1. Síndrome hemolítico-urêmica relacionada à infecção invasiva pelo Streptococcus pneumoniae Hemolytic-uremic syndrome complicating invasive pneumococcal disease

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    Anna Leticia de O. Cestari

    2008-03-01

    Full Text Available OBJETIVO: A doença pneumocócica é importante problema de saúde pública e raramente há associação desta infecção com a síndrome hemolítico-urêmica (SHU grave. O objetivo deste artigo é relatar o caso de um paciente com esta associação. DESCRIÇÃO DO CASO: Criança do sexo masculino, com 17 meses de idade, admitida no hospital com insuficiência respiratória aguda e necessitando de suporte ventilatório. O exame radiológico mostrava extensa opacidade homogênea em hemitórax direito. A hemocultura foi positiva para Streptococcus pneumoniae. Nos exames de admissão, notaram-se: hemoglobina de 6,5g/dL, 38.000 plaquetas/mm³, uréia de 79mg/dL e creatinina de 1,64mg/dL. No primeiro dia, apresentou oligoanúria e hipervolemia, necessitando de hemodiafiltração. Evoluiu com disfunção de múltiplos órgãos e óbito no sétimo dia. A necrópsia mostrou áreas extensas de necrose cortical e tubular renal, com depósito de fibrina nas arteríolas. COMENTÁRIOS: A SHU associada ao pneumococo apresenta morbidade e mortalidade elevadas. Em crianças com doença pneumocócica invasiva e acometimento hematológico ou renal grave, deve-se estar atento a esta rara complicação. Merecem investigação os seguintes aspectos relacionados à doença: a função da detecção precoce de antígenos T ativados no diagnóstico e terapêutica, o papel do fator H na patogênese, o método ideal de substituição renal e a definição do prognóstico em longo prazo.OBJECTIVE: Pneumococcal diseases are a major public health problem. Severe hemolytic-uremic syndrome is an uncommon complication. The aim of this study is to report a child with this complication. CASE DESCRIPTION: A male child with 17 months old was admitted to the hospital, due to acute respiratory failure, needing ventilatory support. Roentgenogram demonstrated massive condensation of right lung and Streptococcus pneumonia was isolated from blood cultures. Laboratory tests showed

  2. Prevalência de sorotipos e resistência antimicrobiana de cepas invasivas do Streptococcus pneumoniae

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    Mantese Orlando C.

    2003-01-01

    Full Text Available OBJETIVO: Avaliar o perfil de sorotipos e a susceptibilidade aos antimicrobianos de cepas de Streptococcus pneumoniae obtidas em espécimes clínicos de pacientes com doença invasiva, bem como suas implicações na formulação de vacinas pneumocócicas. MÉTODOS: Cepas de pneumococo isoladas no Laboratório de Análises Clínicas do Hospital de Clínicas da Universidade Federal de Uberlândia a partir de amostras clínicas de pacientes com doença invasiva foram identificadas e enviadas ao Instituto Adolfo Lutz em São Paulo para confirmação da identificação, sorotipagem e determinação da susceptibilidade aos antimicrobianos. RESULTADOS: De abril de 1999 a março de 2003, foram isoladas 148 cepas invasivas de pneumococo, sendo 84 (56,7% provenientes de pacientes do sexo masculino. A idade variou de um dia a 88,83 anos, com média de 21,33+25,82 anos e mediana de 4,42 anos. Os diagnósticos clínicos mais comuns foram pneumonia (91 casos; 61,4%, meningite (32 casos; 21,6% e bacteremia sem foco evidente (15 casos; 10,1%. As principais fontes de recuperação foram sangue (76 amostras; 51,3%, líquido pleural (39; 26,3% e liquor (30; 20,2%. No total, foram identificados 23 diferentes sorotipos entre 143 amostras testadas, sendo os mais comuns os seguintes: 14, 3, 1, 5, 6A, 6B e 18C. Dentre 30 (20,2% cepas oxacilina-resistentes, 23 (15,5% confirmaram a resistência à penicilina (12,8% com nível intermediário e 2,7%, com nível pleno, que esteve restrita aos sorotipos 14, 23F, 19A e 6B, predominando em indivíduos com até dois anos de idade (p = 0,0008. Foi detectada susceptibilidade diminuída ao cotrimoxazol (63,4%, à eritromicina (8,3%, à clindamicina (8,7% e à ofloxacina (0,8%. A resistência à cefotaxima foi detectada em três das 30 cepas testadas (2% das 148, todas elas com resistência confirmada à penicilina. Não foi observada resistência a cloranfenicol, rifampicina ou vancomicina. CONCLUSÕES: A resistência

  3. Streptococcus pneumoniae aislados de infecciones invasivas: serotipos y resistencia antimicrobiana Streptococcus pneumoniae isolated from invasive infections: serotypes and antimicrobial resistance

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    Gladys Antonia Cueto Montoya

    2007-03-01

    Full Text Available Las meningoencefalitis bacterianas constituyen una enfermedad invasiva importante, quizás no tanto por su frecuencia, como por la gravedad de su cuadro. Los cambios en la epidemiología de los síndromes neurológicos infecciosos en Cuba a partir de la vacunación contra meningococo BC y Haemophilus influenzae b han hecho que el Streptococcus pneumoniae constituya el agente causal más frecuente. Debido al incremento de la resistencia de este microorganismo a los antibióticos habituales, se realizaron modificaciones al régimen terapéutico convencional, fundamentalmente en las meningitis pediátricas. Es necesario lograr el aislamiento en cultivo de este agente para conocer los serotipos más frecuentes en el país, y lograr una vacuna neumocócica conjugada, así como para la vigilancia de las cepas frente a los antimicrobianos.The bacterial meningoencephalitis is an important invasive disease, not only because of its frequency, but also because of the severity of its picture. The changes in the epidemiology of the neurological infectious syndromes in Cuba starting from the vaccination against meningococcus BC and Haemophilus infuenzae b have made that Streptococcus pneumoniae be the most frequent causal agent. Due to the increase of the resistance of this microorganism to habitual antibiotics, modifications were made in the conventional therapeutic regimen, mainly in the pediatric meningitis. It is necessary to achieve the isolation in culture of this agent to know the most common serotypes in the country, to attain a conjugated pneumococcal vaccine, and to keep the surveillance of the strains against the antimicrobials.

  4. Análise das cepas de Streptococcus pneumoniae causadores de pneumonia invasiva: sorotipos e sensibilidade aos antimicrobianos

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    Cristina R. M. Yoshioka

    2011-02-01

    Full Text Available OBJETIVOS: Identificar os sorotipos de pneumococo mais frequentemente isolados de crianças internadas com pneumonia invasiva, comparar os sorotipos com os incluídos em vacinas conjugadas e analisar sua sensibilidade aos antimicrobianos mais utilizados na faixa etária pediátrica. MÉTODOS: Estudo descritivo, retrospectivo das pneumonias pneumocócicas identificadas em crianças internadas no hospital universitário da Universidade de São Paulo, no período de janeiro de 2003 a outubro de 2008. Os critérios de inclusão foram: faixa etária de 29 dias até 15 anos incompletos com diagnóstico clínico e radiológico de pneumonia e com cultura de sangue e/ou líquido pleural com crescimento de Streptococcus pneumoniae. RESULTADOS: Foram incluídas no estudo 107 crianças. Os sorotipos mais frequentes foram: 14 (36,5%, 1 (16,7%, 5 (14,6%, 6B (6,3% e 3 (4,2%. A proporção de sorotipos contidos na vacina conjugada heptavalente seria de 53,1%, na vacina 10-valente de 86,5% e na 13-valente seria de 96,9%. De acordo com os padrões do Clinical and Laboratory Standards Institute 2008, 100 cepas (93,5% de pneumococos foram sensíveis à penicilina (concentração inibitória mínima, CIM 8 µg/mL. Verificamos alta taxa de sensibilidade para as cepas testadas para vancomicina, rifampicina, ceftriaxone, clindamicina, cloranfenicol e eritromicina. CONCLUSÕES: Nossos resultados confirmam um expressivo impacto potencial das vacinas conjugadas, principalmente pela 10-valente e 13-valente, sobre os casos de pneumonias invasivas. Os resultados de sensibilidade à penicilina evidenciam que a opção terapêutica de escolha para o tratamento das pneumonias invasivas continua sendo a penicilina.

  5. Infección invasiva por Streptococcus pneumoniae: reporte de caso de un paciente con síndrome de Austrian

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    Daniel Echeverri; María de los Ángeles Vargas; Lorena Matta; Fernando Rosso; Janier Daniel Segura

    2015-01-01

    Descrito inicialmente en 1957 por Robert Austrian, el síndrome que lleva su nombre se define como la tríada de neumonía, endocarditis y meningitis secundarias a una infección invasiva por Streptococcus pneumoniae. Desde entonces, y debido a su infrecuencia, se han reportado muy pocos casos en la literatura científica. A continuación se presenta el caso de un paciente de 61 años de edad con un cuadro inicial de meningitis bacteriana por S. pneumoniae, acompañado de neumonía bacteriana e in...

  6. Impacto da vacina conjugada contra Streptococcus pneumoniae em doenças invasivas Impact of pneumococcal conjugate vaccine on the prevention of invasive pneumococcal diseases

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    Lucia Ferro Bricks

    2006-07-01

    Full Text Available OBJETIVOS: Rever os estudos que avaliam o impacto da vacina conjugada 7-valente na incidência de doenças invasivas por pneumococo e analisar o possível impacto dessa vacina no Brasil. FONTE DE DADOS:Foram pesquisadas as bases de dados MEDLINE, LILACS, Cochrane Database Reviews (janeiro de 2000 a janeiro de 2006, selecionando-se para análise os artigos contendo as seguintes palavras-chave: Streptococcus pneumoniae, pneumococo, vacina conjugada, resistência, antibióticos e meningite. Também foi realizada busca de informações sobre o tema nos sites do Centers for Disease Control, Ministério da Saúde e Centro de Vigilância Epidemiológica do Estado de São Paulo. SÍNTESE DOS DADOS: A vacina conjugada 7-valente reduziu a incidência de doenças invasivas por pneumococo, número de consultas por doenças respiratórias de vias aéreas superiores e inferiores, consumo de antibióticos e incidência de doenças invasivas por pneumococo por cepas resistentes a antibióticos não apenas nas crianças vacinadas, como em adultos e idosos. No Brasil, os coeficientes de incidência de doenças invasivas por pneumococo em crianças menores de 5 anos são elevados, a taxa de letalidade de meningites pneumocócicas é alta e as taxas de resistência parcial e plena à penicilina aumentaram substancialmente nos últimos 5 anos. CONCLUSÕES:Devido aos benefícios diretos e indiretos do uso em larga escala da vacina conjugada 7-valente, essa vacina deve ser incluída no calendário básico de imunização do Brasil.OBJECTIVES: To evaluate the impact of heptavalent pneumococcal conjugate vaccine in invasive pneumococcal diseases in the United States, and to analyze the potential impact of this vaccine in Brazil. SOURCES OF DATA: MEDLINE, LILACS, Cochrane Database Reviews, as well as the websites of the Centers for Disease Control and Prevention (CDC, Brazilian Ministry of Health and Centro de Vigilância Epidemiológica do Estado de São Paulo from

  7. Mecanismo de patogenicidad de "Streptococcus pneumoniae" asociados a enfermedad invasiva y enfermedad pulmonar obstructiva crónica

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    Aguinagalde Salazar, Leire

    2017-01-01

    Streptococcus pneumoniae, también conocido como neumococo, es uno de los patógenos humanos más importantes responsable de infecciones severas tales como neumonía bacteriémica y meningitis, así como de enfermedades no tan graves como neumonía adquirida en la comunidad, otitis media aguda, sinusitis y conjuntivitis (Bogaert et al., 2004), que afectan principalmente a niños, personas mayores de 65 años y pacientes inmunocomprometidos (Koedel et al., 2002; van der Poll y Opal, 2009). La enfermeda...

  8. Infección invasiva por Streptococcus pneumoniae: reporte de caso de un paciente con síndrome de Austrian

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    Daniel Echeverri

    2015-03-01

    Full Text Available Descrito inicialmente en 1957 por Robert Austrian, el síndrome que lleva su nombre se define como la tríada de neumonía, endocarditis y meningitis secundarias a una infección invasiva por Streptococcus pneumoniae. Desde entonces, y debido a su infrecuencia, se han reportado muy pocos casos en la literatura científica. A continuación se presenta el caso de un paciente de 61 años de edad con un cuadro inicial de meningitis bacteriana por S. pneumoniae, acompañado de neumonía bacteriana e insuficiencia mitral grave asociada a cuatro vegetaciones sobre la cara auricular de la valva posterior, con ruptura y prolapso de su festón central posterior. Se aisló S. pneumoniae, serotipo 18C, en líquido cefalorraquídeo y en dos hemocultivos. El paciente recibió antibióticos de amplio espectro y fue sometido a reemplazo valvular temprano con un resultado clínico satisfactorio. El principal factor pronóstico de esta condición lo determina el daño valvular subsecuente, sobre todo en pacientes con compromiso de la válvula aórtica, por lo que es necesario identificar tempranamente la extensión del compromiso valvular y definir oportunamente el tratamiento quirúrgico y antibiótico del paciente. En casos menos frecuentes, en los que solo hay compromiso de la válvula mitral, la evolución clínica es menos aguda y, por lo general, el tratamiento antibiótico dirigido y las medidas de soporte avanzado suelen ser suficientes para su control.

  9. Cerebral ischemia caused by Streptococcus bovis aortic endocarditis: case report Isquemia cerebral causada por endocardite aórtica pelo Streptococcus bovis: relato de caso

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    Leopoldo Santos-Neto

    2005-09-01

    Full Text Available Cerebral ischemic processes associated with infective endocarditis caused by Streptococcus bovis are rare; only 2 cases having been reported. Here we report a case of a 50-year-old man with S. bovis endocarditis who presented signs of frontal, parietal and occipital lobe cerebral ischemia. This is the first case reported in which the presence of hemianopsia preceded the endocarditis diagnosis. Initially, the clinical manifestations suggested a systemic vasculitis. Later, vegetating lesions were identified in the aortic valve and S. bovis grew in blood cultures. Antibiotic use and aortic valve replacement eliminated the infection and ceased thromboembolic events. A videocolonoscopy examination revealed no mucosal lesions as a portal of entry in this case, although such lesions have been encountered in up to 70% of reported cases of S. bovis endocarditis.A associação de isquemia cerebral e endocardite por Streptococcus bovis é um evento raro, tendo sido publicados apenas 2 casos anteriormente. Nós relatamos o caso de um homem de 50 anos com endocardite por S. bovis que apresentou sinais isquêmicos nos lobos frontal, parietal e occipital. Este é o primeiro caso em que a hemianopsia precedeu o diagnóstico de endocardite. Inicialmente, o quadro foi confundido com vasculite. Posteriormente, foi confirmada a presença de vegetações na válvula aórtica e a hemocultura identificou S. bovis. Os eventos tromboembólicos foram controlados com o uso de antibióticos e a troca da válvula aórtica. Estudo videocolonoscópico não identificou nenhuma lesão, apesar de lesões colônicas serem descritas em até 70% dos casos de indivíduos com endocardite por S. bovis.

  10. Medicina Dentária minimamente invasiva

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    Franken, Monique Ananda

    2015-01-01

    Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina Dentária Introdução: Nos últimos anos, a doença cárie tem passado por uma análise criteriosa dos recursos terapêuticos a serem empregues, sendo discutida a adoção de uma prática mais conservadora e menos invasiva. Os materiais e as técnicas têm sido aperfeiçoados de modo a permitir o conforto do paciente e a preservação da estrutura ...

  11. Enfermedad neumocócica invasiva en niños de la Región de Murcia

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    Espín M.I.

    2002-01-01

    Full Text Available Objetivo: La disponibilidad de una vacuna neumocócica conjugada plantea la necesidad de conocer la incidencia y características de la enfermedad neumocócica invasiva en niños de la Región de Murcia, con la finalidad de obtener información que pueda ser de utilidad para establecer adecuadamente las indicaciones de vacunación. Métodos: Se ha realizado una búsqueda retrospectiva de casos de enfermedad invasiva por Streptococcus pneumoniae en menores de 15 años de edad atendidos en hospitales de la Región de Murcia durante el período 1991-2000. Las fuentes de datos utilizadas han sido las bases de datos de los Servicios de Microbiología, el Conjunto Mínimo de Datos Básicos, registro de altas pediátricas y Registro EDO. Resultados: La tasa de incidencia para el período 1996-2000 fue, para los menores de 1 año, de 18,25 por 10(5 personas-año en el caso de enfermedad invasiva (10,6 para meningitis; para los menores de 2 años, de 13,6 para enfermedad invasiva (6 para meningitis; para menores de 5 años, de 8,9 (1,35 para meningitis, y para los menores de 15 años, de 3,7 (1,3 para meningitis. El 28% de los casos presentaba factores de riesgo. Las complicaciones alcanzaron el 35,2% y las secuelas el 5%. La letalidad fue del 11,8%. Los serogrupos prevalentes fueron el 19, el 6, el 18, el 5, el 14 y el 23. Conclusiones: El alto porcentaje de casos con factores de riesgo de enfermedad neumocócica invasiva aconseja la implantación de programas de vacunación dirigidos a todos los niños con factores de riesgo. La incidencia de enfermedad neumocócica invasiva encontrada en la Región de Murcia difiere de la de otras zonas geográficas; sin embargo, la incidencia de meningitis es similar a la de otros estudios. La gravedad de la enfermedad justifica la realización de estudios coste-efectividad para valorar la posible incorporación de la vacuna en el calendario vacunal.

  12. Gestantes colonizadas pelo Streptococcus do grupo B e seus recém-nascidos: análise crítica da conduta adotada no Instituto Fernandes Figueira, Fundação Oswaldo Cruz Beta-hemolytic streptococcus in pregnant women and their newborn infants: a critical analysis of the protocol used at Fernandes Figueira Institute, Oswaldo Cruz Foundation, in Brazil

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    Natalie Del-Vecchio L. Costa

    2010-06-01

    Full Text Available OBJETIVO: Avaliar a aplicação do protocolo do Centers of Disease Control (CDC, 2002 quanto à profilaxia da sepse neonatal precoce por Streptococcus do grupo B (SGB. MÉTODOS: Estudo retrospectivo com revisão de prontuários de 125 gestantes colonizadas pelo SGB e 133 recém-nascidos, no período de janeiro/2003 a dezembro/2006. A conduta intraparto foi considerada correta quando a gestante recebia antibioticoprofilaxia pelo menos quatro horas antes do parto, ou quando não recebia, mas era submetida a parto cesáreo eletivo. A conduta intraparto foi considerada incorreta quando a gestante recebia antibioticoprofilaxia menos de quatro horas antes do parto, a prescrição antibiótica estava incorreta ou quando não havia profilaxia prescrita. RESULTADOS: A prevalência de colonização materna pelo SGB foi de 4,7%. A época de coleta do swab vaginal/retal variou entre 14 e 40 semanas de gestação, com média de 32 semanas. Das gestantes colonizadas, 54 (43% receberam conduta intraparto correta. Dos 133 recém-nascidos estudados, 95 (71% receberam avaliação diagnóstica corretamente, 17 (13% evoluíram com sepse clínica e um (0,75% apresentou sepse comprovada. A incidência de sepse foi maior em recém-nascidos cujas mães não receberam profilaxia intraparto corretamente, porém esta associação não apresentou diferença estatística significativa (18 versus 7%, p>0,05. CONCLUSÕES: Apesar de o protocolo para prevenção de sepse precoce pelo SGB estar implementado na instituição, ainda é possível observar falhas na profilaxia intraparto materna. Essas falhas representam oportunidades perdidas na prevenção da sepse precoce pelo SGB.OBJECTIVE: To evaluate the use of the guidelines of the Centers of Disease Control (CDC, 2002 regarding the prophylaxes of group B Streptococcus (GBS early onset neonatal sepsis. METHODS: We conducted a retrospective study by chart review of 125 pregnant women colonized by GBS and 133 neonates born at a

  13. Prevalência da colonização pelo estreptococo do grupo B em gestantes atendidas em ambulatório de pré-natal Prevalence of group B Streptococcus in pregnant women from a prenatal care center

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    Adriane Pogere

    2005-04-01

    Full Text Available OBJETIVO: verificar a prevalência de estreptococo do grupo B (EGB em gestantes no terceiro trimestre da gravidez e explorar os fatores potencialmente associados à colonização. MÉTODOS: uma amostra de 273 gestantes no terceiro trimestre da gravidez, provenientes do ambulatório de pré-natal do Hospital Universitário do Sul do Brasil, foi investigada. Culturas de amostra vaginal e anorretal foram obtidas e inoculadas em meio seletivo de Todd-Hewitt suplementado com 10 µg/ml de colistina e 15 µg/ml de ácido nalidíxico e posteriormente subcultivadas em ágar sangue de carneiro desfibrinado. Todas as colônias suspeitas foram submetidas ao teste de aglutinação para detecção do antígeno específico do grupo B. O teste de Camp foi utilizado para identificação do EGB das variedades não hemolíticas. Analisaram-se também os dados demográficos, socioeconômicos, reprodutivos e clínico-obstétricos. A razão de prevalência (RP foi utilizada como medida de risco. Considerou-se como significante o intervalo de confiança no nível de 95% (alfa=0,05. RESULTADOS: a prevalência de colonização pelo EGB foi de 21,6% (59, sendo que 9,9% (27 das gestantes tiveram positividade em ambos os sítios, 6,95% (19 foram positivas somente no sítio vaginal e 4,75% (13 da amostra tiveram positividade apenas no sítio anal. A prevalência de EGB foi ligeiramente mais alta nas gestantes com idade inferior a 20 anos, naquelas com menor escolaridade e nas gestantes primíparas, e o dobro entre aquelas que não relataram aborto espontâneo, porém sem significância estatística. Não foi encontrada diferença na prevalência de EGB de acordo com história de doenças sexualmente transmissíveis e tabagismo. Quando os dados foram analisados conjuntamente, os fatores detectados como potencialmente associados à colonização pelo EGB foram: primíparas com mais de 30 anos (RP=1,55 e mulheres com mais de um parceiro sexual e freqüência de atividade

  14. Revascularização do miocárdio minimamente invasiva videoassistida

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    Rodrigo Mussi Milani

    2012-07-01

    Full Text Available FUNDAMENTO: De um modo geral, as operações estão cada vez menos invasivas e a cirurgia cardíaca começa a seguir por este caminho. OBJETIVO: Avaliar a evolução de cem pacientes submetidos à operação de revascularização do miocárdio minimamente invasiva. MÉTODOS: O acesso ao coração deu-se através de pequena toracotomia lateral no 4º espaço intercostal esquerdo, com 6 cm, iniciando-se ao nível do mamilo. Pelo mesmo espaço intercostal, 3 cm após o término da incisão principal, foi inserida ótica de 6,5 mm com 30º. Nos casos em que a veia safena foi utilizada, o pericárdio foi aberto em cima da aorta e, com uma pressão sistólica de 80 mmhg, foi pinçada parcialmente, sendo a anastomose proximal feita de maneira convencional. As anastomoses distais foram feitas de modo convencional. O procedimento foi realizado sem circulação extracorporal (CEC com auxílio de ventilação monopulmonar. RESULTADOS: A idade média foi de 63,9 ± 10,66 anos. Sessenta e oito (68% eram do sexo masculino. Cinquenta e três (53% encontravam-se em classe funcional III ou IV. A função do ventrículo esquerdo era normal em cinquenta e três (53% pacientes. Quarenta e dois (42% haviam sido submetidos à angioplastia prévia. Foram realizadas 153 anastomoses distais, variando de 1 a 3. O tempo médio de ventilação foi de 4,06 ± 4,08 horas. Dezessete (17% pacientes apresentaram fibrilação atrial e oito (8% pneumonias. Houve dois óbitos nesta série. CONCLUSÃO: A revascularização mostrou-se segura, com baixa mortalidade e morbidade. Com novos dispositivos, essa operação poderá ter uma aplicabilidade maior.

  15. Streptococcus iniae and Streptococcus agalactiae

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    Streptococcus iniae and S. agalactiae are economically important Gram positive bacterial pathogens of cultured and wild fish with a worldwide distribution. Both bacteria are potential zoonotic pathogens and have been associated most often with infections in immunocompromised people. Streptococcus in...

  16. El ultrasonido: desde el murciélago hasta la cardiología no invasiva

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    Fabián Dávila

    2017-03-01

    Conclusiones: Grandes avances se han logrado en consecuencia con la evolución del ultrasonido en medicina, su inicio en la ecolocalización descrita en los murciélagos hasta la ultrasonografía cardiaca en 3 D, han permitido el desarrollo de nuevas no invasivas en la medicina cardiovascular.

  17. Colonização nasofaríngea pelo Streptococcus pneumoniae em crianças com doença falciforme usando penicilina profilática Nasopharyngeal colonization by Streptococcus pneumoniae in children with sickle cell disease receiving prophylactic penicillin

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    Patricia B. Blum Fonseca

    2005-04-01

    Full Text Available OBJETIVOS: Determinar a prevalência de colonização nasofaríngea pelo pneumococo em crianças com doença falciforme, em uso de profilaxia com penicilina; identificar fatores de risco para colonização; sorotipar as cepas isoladas e avaliar a resistência antimicrobiana. METODOLOGIA: Foram colhidos 188 suabes de nasofaringe de 98 crianças com doença falciforme em acompanhamento no Hospital São Paulo, da Universidade Federal de São Paulo, no período de 09 de abril de 2002 a 28 de fevereiro de 2003. O isolamento e a identificação dos pneumococos seguiram procedimentos padronizados. A concentração inibitória mínima para penicilina foi determinada pelo método do E-test. A sorotipagem foi realizada pela reação de Neufeld-Quellung com anti-soros para 46 sorotipos. RESULTADOS: A idade variou de 4 meses a 17 anos (média e desvio padrão de 6,8±4,7 anos. Das 98 crianças do estudo, 13 apresentaram colonização pelo pneumococo (prevalência de 13,3%. O maior risco de colonização ocorreu em menores de 2 anos de idade (p = 0,02. A prevalência de cepas com resistência intermediária à penicilina foi de 21,4%, não sendo evidenciada resistência plena. Também não houve cepas resistentes à eritromicina, ceftriaxona e vancomicina. Os sorotipos isolados mais freqüentes foram o 18C e o 23F. CONCLUSÕES: O uso profilático de penicilina diminuiu a colonização nasofaríngea pelo pneumococo e não determinou aumento da resistência a esse antimicrobiano nas crianças com doença falciforme. A penicilina ainda pode ser usada na profilaxia e no tratamento dos episódios febris dessas crianças.OBJECTIVES: To determine the prevalence of nasopharyngeal pneumococcus colonization in children with sickle cell disease undergoing penicillin prophylaxis, to identify risk factors for colonization and to serotype and determine antibiotic resistance in pneumococci obtained from those children. METHODS: Between April 9, 2002 and February 28, 2003

  18. Streptococcus pneumoniae

    African Journals Online (AJOL)

    Clinical significance of antimicrobial resistance in. Streptococcus pneumoniae. Michael R Jacobs. Despite increasing resistance in the pneumococcus over the past 30 years, there are few cases of treatment failure of non-meningeal infections with high-dosage parenteral penicillin G, which still remains highly effective for.

  19. Streptococcus suis

    DEFF Research Database (Denmark)

    Poggenborg, René; Gaïni, Shahin; Kjaeldgaard, Poul

    2008-01-01

    Meningitis and spondylodiscitis caused by Streptococcus suis is a rare disease which is contracted by occupational exposure to pigs. We report a 54-y-old pig-farm worker with S. suis meningitis and septicaemia complicated with thoracal and lumbar spine spondylodiscitis. The S. suis strain involved...

  20. Sofrimento pelo trabalho

    OpenAIRE

    Malaguty, Sarita

    2013-01-01

    Resumo: Este trabalho é fruto de uma pesquisa teórico-conceitual que tem como objetivo encontrar elementos teórico-metodológicos na Psicologia Histórico-Cultural, em especial, na obra de A. N. Leontiev, que possam contribuir para o entendimento do sofrimento pelo trabalho na sociedade capitalista. Trata-se, portanto, de uma investigação sistemática da teoria psicológica de Leontiev e de autores contemporâneos que dialogam com o mesmo, a fim de buscar elementos que possibilitem a mediação entr...

  1. Ventilação mecânica não invasiva na crise de asma aguda grave em crianças: níveis de evidências

    Directory of Open Access Journals (Sweden)

    Paula de Souza Silva

    2015-12-01

    Full Text Available RESUMO Objetivo: Avaliar a qualidade das evidências existentes para embasar diretrizes do emprego da ventilação mecânica não invasiva no manejo da crise de asma aguda grave em crianças não responsivas ao tratamento padrão. Métodos: Busca, seleção e análise de todos os artigos originais sobre asma e ventilação mecânica não invasiva em crianças, publicados até 1º de setembro de 2014, em todos os idiomas, nas bases de dados eletrônicas PubMed, Web of Science, Cochrane Library, Scopus e SciELO, encontrados por meio de busca pelos descritores "asthma", "status asthmaticus", "noninvasive ventilation", "bronchospasm", "continuous positive airway pressure", "child", "infant", "pediatrics", "hypercapnia", "respiratory failure", e das palavras-chave "BIPAP", "CPAP", "bilevel", "acute asthma" e "near fatal asthma". Os artigos foram qualificados segundo os graus de evidências do Sistema GRADE. Resultados: Foram obtidos apenas nove artigos originais. Destes, dois (22% apresentaram nível de evidência A, um (11% apresentou nível de evidência B e seis (67% apresentaram nível de evidência C. Conclusão: Sugere-se que o emprego da ventilação mecânica não invasiva na crise de asma aguda grave em crianças não responsivas ao tratamento padrão é aplicável à maioria desses pacientes, mas as evidências não podem ser consideradas conclusivas, uma vez que pesquisa adicional de alta qualidade provavelmente tenha um impacto modificador na estimativa de efeito.

  2. Diagnosis of neonatal group B Streptococcus sepsis by nested-PCR of residual urine samples Diagnóstico de sepse neonatal causada pelo estreptococo do grupo B por meio de dupla amplificação de amostras residuais de urina

    Directory of Open Access Journals (Sweden)

    Bruno Nicolino Cezarino

    2008-03-01

    Full Text Available Group B streptococcus (GBS remains the most common cause of early-onset sepsis in newborns. Laboratory gold-standard, broth culture methods are highly specific, but lack sensitivity. The aim of this study was to validate a nested-PCR and to determine whether residue volumes of urine samples obtained by non invasive, non sterile methods could be used to confirm neonatal GBS sepsis. The nested-PCR was performed with primers of the major GBS surface antigen. Unavailability of biological samples to perform life supporting exams, as well as others to elucidate the etiology of infections is a frequent problem concerning newborn patients. Nevertheless, we decided to include cases according to strict criteria: newborns had to present with signs and symptoms compatible with GBS infection; at least one of the following biological samples had to be sent for culture: blood, urine, or cerebrospinal fluid; availability of residue volumes of the samples sent for cultures, or of others collected on the day of hospitalization, prior to antibiotic therapy prescription, to be analyzed by PCR; favorable outcome after GBS empiric treatment. In only one newborn GBS infection was confirmed by cultures, while infection was only presumptive in the other three patients (they fulfilled inclusion criteria but were GBS-culture negative. From a total of 12 biological samples (5 blood, 3 CSF and 4 urine specimen, eight were tested by culture methods (2/8 were positive, and 8 were tested by PCR (7/8 were positive, and only 4 samples were simultaneously tested by both methods (1 positive by culture and 3 by PCR. In conclusion, although based on a restricted number of neonates and samples, our results suggest that the proposed nested-PCR might be used to diagnose GBS sepsis as it has successfully amplified the three types of biological samples analyzed (blood, urine and cerebrospinal fluid, and was more sensitive than culture methods as PCR in urine confirmed diagnosis in all

  3. Streptococcus agalactiae

    Science.gov (United States)

    Al-Otaibi, Humoud M; Talea, Mohammed; Kirat, Omar; Stone, Donald U; May, William N; Kozak, Igor

    2016-01-01

    A 25-year-old Syrian male with a previous episode of Stevens-Johnson syndrome with bilateral corneal cicatrization previously underwent surgery for Type 1 Boston Keratoprosthesis (K-Pro). Sixteen months after the K-Pro surgery, the patient presented with decreased vision to hand motion and microbial keratitis of the graft around the K-Pro with purulent discharge. Corneal scrapings were nonrevealing. B-scan in 3 days showed increased debris in the vitreous cavity and thickened retinochoroidal layer. Intravitreal tap and injections of vancomycin and ceftazidime were performed. The vitreous culture revealed β-hemolytic Streptococcus agalactiae ; fungal cultures were negative. Repeat B-scan 3 days later demonstrated decreased vitreous opacity, and the patient felt more comfortable and was without pain. His visual acuity improved to 20/70, ocular findings have been stable for 9 months, and the patient continues to be monitored.

  4. Odontología mínimamente invasiva. Tratamiento restaurador atraumático

    OpenAIRE

    Carletto-Körber, F.

    2013-01-01

    El Tratamiento Restaurador Atraumático (TRA), constituye una nueva visión de la odontología. Es una técnica basada en la filosofía de mínima intervención; es decir, mínimamente invasiva y altamente conservadora. Estos tratamientos consisten en eliminar la menor cantidad de tejido dentario, empleando instrumentos manuales y cemento de ionómero de vidrio como material de obturación. Un aspecto clave de la técnica consiste en orientar al paciente en métodos profilácticos y hábitos nutricionales ...

  5. La cirugía valvular mínimamente invasiva

    Directory of Open Access Journals (Sweden)

    Orlando Santana

    2014-06-01

    Full Text Available Introducción: La cirugía valvular mínimamente invasiva representa un cambio significativo en el tratamiento de las enfermedades valvulares. Este procedimiento se ha convertido en una opción de tratamiento que puede representar menos riesgos para el paciente, especialmente si se realiza en centros que han desarrollado experiencia con la técnica quirúrgica. Métodos: Revisión de la literatura y reporte de experiencia con la utilización del método descrito. Resultados: En cuanto a la incidencia de re-exploración por sangramiento, fibrilación auricular y eventos tromboembólicos no se encontró diferencia significativa entre la esternotomía media y la cirugía mínimamente invasiva pero con esta última se observó menor necesidad de transfusiones sanguíneas, menor incidencia de infecciones del esternón, al igual que menos dolor postoperatorio, corta permanencia en la unidad de cuidados intensivos y en el hospital, menos uso de analgésicos, mayor satisfacción del paciente, reducción en el uso de los servicios de rehabilitación y regreso a las actividades normales. Sin embargo, existe mayor número de accidentes cerebrovasculares asociados a la cirugía mínimamente invasiva. La mortalidad entre ambas técnicas es similar, excepto en pacientes de alto riesgo, en quienes se ha demostrado una reducción en la mortalidad con la cirugía mínimamente invasiva. Conclusiones: La cirugía de mínimo acceso se relaciona con recuperación más rápida y mayor satisfacción para el paciente, así como con reducción de complicaciones postoperatorias y de la mortalidad en pacientes de riesgo alto.

  6. Group B streptococcus - pregnancy

    Science.gov (United States)

    ... page: //medlineplus.gov/ency/patientinstructions/000511.htm Group B streptococcus - pregnancy To use the sharing features on this page, please enable JavaScript. Group B streptococcus (GBS) is a type of bacteria that ...

  7. Streptococcus suis

    Science.gov (United States)

    Ma, Fang; Yi, Li; Yu, Ningwei; Wang, Guangyu; Ma, Zhe; Lin, Huixing; Fan, Hongjie

    2017-01-01

    Invasive infections caused by Streptococcus suis serotype 2 (SS2) has emerged as a clinical problem in recent years. Neutrophil extracellular traps (NETs) are an important mechanism for the trapping and killing of pathogens that are resistant to phagocytosis. Biofilm formation can protect bacteria from being killed by phagocytes. Until now, there have only been a few studies that focused on the interactions between bacterial biofilms and NETs. SS2 in both a biofilm state and a planktonic cell state were incubated with phagocytes and NETs, and bacterial survival was assessed. DNase I and cytochalasin B were used to degrade NET DNA or suppress phagocytosis, respectively. Extracellular DNA was stained with impermeable fluorescent dye to quantify NET formation. Biofilm formation increased up to 6-fold in the presence of neutrophils, and biofilms were identified in murine tissue. Both planktonic and biofilm cells induced neutrophils chemotaxis to the infection site, with neutrophils increasing by 85.1 and 73.8%, respectively. The bacteria in biofilms were not phagocytized. The bactericidal efficacy of NETs on the biofilms and planktonic cells were equal; however, the biofilm extracellular matrix can inhibit NET release. Although biofilms inhibit NETs release, NETs appear to be an important mechanism to eliminate SS2 biofilms. This knowledge advances the understanding of biofilms and may aid in the development of treatments for persistent infections with a biofilm component.

  8. Streptococcus pneumoniae

    Science.gov (United States)

    Bergenfelz, Caroline; Hakansson, Anders P

    2017-01-01

    This study aimed to review the literature regarding the mechanisms of transition from asymptomatic colonization to induction of otitis media and how the insight into the pathogenesis of otitis media has the potential to help design future otitis media-directed vaccines. Respiratory viruses have long been shown to predispose individuals to bacterial respiratory infections, such as otitis media. Recent information suggests that Streptococcus pneumoniae , which colonize the nasopharynx asymptomatically, can sense potentially "threatening" changes in the nasopharyngeal environment caused by virus infection by upregulating specific sets of genes involved in biofilm release, dissemination from the nasopharynx to other sites, and protection against the host immune system. Furthermore, an understanding of the transcriptional and proteomic changes occurring in bacteria during transition to infection has led to identification of novel vaccine targets that are disease-specific and will not affect asymptomatic colonization. This approach will avoid major changes in the delicate balance of microorganisms in the respiratory tract microbiome due to elimination of S. pneumoniae . Our recent findings are reviewed in the context of the current literature on the epidemiology and pathogenesis of otitis media. We also discuss how other otopathogens, such as Haemophilus influenzae and Moraxella catarrhalis , as well as the normal respiratory microbiome, can modulate the ability of pneumococci to cause infection. Furthermore, the unsatisfactory protection offered by the pneumococcal conjugate vaccines is highlighted and we review potential future strategies emerging to confer a more specific protection against otitis media.

  9. Sinusite invasiva por Aspergillus flavus : relato de um caso associado a leucemia aguda bifenotípica

    OpenAIRE

    Xavier, Melissa Orzechowski; Oliveira, Flávio de Mattos; Almeida, Valdir de; Prolla, Gabriel; Severo, Luiz Carlos

    2009-01-01

    Here we report a case of invasive pansinusitis with proptosis of the right eye caused by Aspergillus flavus in an immunocompromised patient with acute biphenotypic leukemia without aggressive therapy response.Descreve-se um caso de pansinusite invasiva com proptose do globo ocular direito causado por Aspergillus flavus em um paciente imunossuprimido com leucemia aguda bifenotípica sem resposta a terapia agressiva.

  10. Avaliação clínica radiológica da artrodese lombar transforaminal aberta versus minimamente invasiva Evaluación clínica radiológica de la artrodesis lumbar transforaminal abierta versus mínimamente invasiva Clinical and radiological evaluation of open transforaminal lumbar interbody fusion versus minimally invasive

    Directory of Open Access Journals (Sweden)

    Cristiano Magalhães Menezes

    2009-09-01

    Full Text Available OBJETIVO: a proposta deste trabalho é comparar os resultados clínicos e radiológicos dos pacientes submetidos à artrodese transforaminal aberta e minimamente invasiva. MÉTODOS: quarenta e cinco pacientes foram submetidos à artrodese lombar transforaminal pelo Grupo de Cirurgia Espinhal do Hospital Lifecenter/Ortopédico de Belo Horizonte, no período de Dezembro de 2005 a Maio de 2007, sendo 15 no grupo de artrodese aberta e 30 pacientes do grupo de artrodese minimamente invasiva (MIS. As indicações para a artrodese intersomática foram: doença degenerativa do disco, associada ou não a hérnia de disco ou estenose do canal; espondilolistese de baixo grau espondilolítica ou degenerativa; e síndrome pós-laminectomia/discectomia. As variáveis analisadas foram: tempo de cirurgia, tempo de internação hospitalar, necessidade de hemotransfusão, escala analógica visual de dor (VAS lombar e dos membros inferiores, Oswestry, índice de consolidação da artrodese e retorno ao trabalho. RESULTADOS: o seguimento mínimo foi de 24 meses. Havia oito homens e sete mulheres no Grupo Aberto e 17 homens e 13 mulheres no Grupo MIS. O tempo cirúrgico médio foi de 222 minutos e 221 minutos, respectivamente. Houve melhora significativa da VAS e Oswestry no pós-operatório em ambos os grupos. O tempo de internação hospitalar variou de 3,3 dias para o Grupo Aberto e 1,8 dias para o Grupo MIS. O índice de fusão obtido foi de 93,3% em ambos os grupos. Houve necessidade de hemotransfusão em três pacientes no Grupo Aberto (20% e nenhum caso MIS. CONCLUSÕES: a transforaminal lumbar interbody fusion (TLIF minimamente invasiva apresenta resultados similares em longo prazo quando comparado à TLIF aberta, com os benefícios adicionais de menor morbidade pós-operatória, menor período de internação e reabilitação precoce.OBJETIVO: la propuesta de este trabajo es comparar los resultados clínicos y radiológicos de los pacientes sometidos a la

  11. A review of the new minimally invasive brain stimulation techniques in psychiatry Revisão de novas técnicas minimamente invasivas de estimulação cerebral em psiquiatria

    Directory of Open Access Journals (Sweden)

    Jeong-Ho Chae

    2001-06-01

    Full Text Available New knowledge about the specific brain regions involved in neuropsychiatric disorders is rapidly evolving due to recent advances in functional neuroimaging techniques. The ability to stimulate the brain in awake alert adults without neurosurgery is a real advance that neuroscientists have long dreamed for. Several novel and minimally invasive techniques to stimulate the brain have recently developed. Among these newer somatic interventions, transcranial magnetic stimulation (TMS, vagus nerve stimulation (VNS and deep brain stimulation (DBS show promise as therapeutic tools in the treatment of neuropsychiatric disorders. This article reviews the history, methodology, and the future of these minimally invasive brain stimulation (MIBS techniques and their emerging research and therapeutic applications in psychiatryO conhecimento acerca de regiões específicas do cérebro envolvidas em transtornos psiquiátricos está em franca expansão como resultado dos avanços recentes em técnicas de neuroimagem funcional. A capacidade de estimular o cérebro em adultos despertos em estado de alerta, sem necessidade de neurocirurgia, é um avanço real sonhado havia muito pelos neurocientistas. Recentemente, desenvolveram-se várias novas técnicas minimamente invasivas para estimular o cérebro. Entre essas novas intervenções somáticas, a estimulação transcraniana magnética (ETM, a estimulação do nervo vago (ENV e a estimulação cerebral profunda (ECP revelam-se promissoras ferramentas terapêuticas no tratamento de transtornos neuropsiquiátricos. Neste artigo se faz uma revisão da história, da metodologia e das perspectivas futuras das técnicas minimamente invasivas de estimulação cerebral (ECMI e das pesquisas e aplicações terapêuticas em psiquiatria

  12. Estudo sobre os elementos de uma interpretação invasiva na abordagem psicanalítica winnicottiana Estudio sobre los elementos de una interpretación invasiva en el abordaje psicoanalítico winnicottiano Study on the elements of an invasive interpretation in the Winnicott psychoanalytical approach

    Directory of Open Access Journals (Sweden)

    Conceição Aparecida Serralha

    2012-04-01

    Full Text Available Partindo dos textos freudianos, este estudo reapresenta brevemente a técnica da interpretação em psicanálise e, baseando-se na obra de Winnicott, discute os elementos de uma interpretação sentida de forma invasiva pelo analisando. São identificados, nomeados e discutidos os elementos apontados por este autor: tempo, modo, graus de confiabilidade, objetividade e conhecimento, sendo ilustrados por alguns fragmentos de sessão de casos de Winnicott e de um caso da autora. O estudo evidencia a importância da capacidade de o analista se identificar com o analisando para interpretar, recebendo e entendendo a comunicação deste sobre a adequação de todos esses elementos ao seu caso.Partiendo de los textos freudianos, este estudio reapresenta brevemente la técnica de la interpretación en psicoanálisis y, basándose en la obra de Winnicott, discute los elementos de una interpretación sentida de forma invasiva por el analizando. Son identificados, nombrados y discutidos los elementos apuntados por este autor: tiempo, modo, grados de confiabilidad, objetividad y conocimiento, siendo ilustrados por algunos fragmentos de sesión de casos de Winnicott y de un caso de lo autor. El estudio evidencia la importancia de la capacidad de el analista identificarse con el analizando para interpretar, recibiendo y entendiendo la comunicación de este sobre la adecuación de todos esos elementos a su caso.From the Freudian texts, this study reintroduces briefly the technique of interpretation in psychoanalysis and, based on the Winnicott's works, discusses the elements of an interpretation felt invasive by the patient. The elements pointed out by this author and identified, named and discussed include: time, manner, degrees of trustworthiness, objectiveness and knowledge. They are illustrated with fragments of session of Winnicott's cases and one case of the author. The study highlights the importance of the analyst's capacity of identifying him

  13. Enfermedad neumocócica invasiva en niños de la Región de Murcia Invasive pneumococcal disease in children in the region of Murcia, Spain

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    M.I. Espín

    2002-10-01

    Full Text Available Objetivo: La disponibilidad de una vacuna neumocócica conjugada plantea la necesidad de conocer la incidencia y características de la enfermedad neumocócica invasiva en niños de la Región de Murcia, con la finalidad de obtener información que pueda ser de utilidad para establecer adecuadamente las indicaciones de vacunación. Métodos: Se ha realizado una búsqueda retrospectiva de casos de enfermedad invasiva por Streptococcus pneumoniae en menores de 15 años de edad atendidos en hospitales de la Región de Murcia durante el período 1991-2000. Las fuentes de datos utilizadas han sido las bases de datos de los Servicios de Microbiología, el Conjunto Mínimo de Datos Básicos, registro de altas pediátricas y Registro EDO. Resultados: La tasa de incidencia para el período 1996-2000 fue, para los menores de 1 año, de 18,25 por 10(5 personas-año en el caso de enfermedad invasiva (10,6 para meningitis; para los menores de 2 años, de 13,6 para enfermedad invasiva (6 para meningitis; para menores de 5 años, de 8,9 (1,35 para meningitis, y para los menores de 15 años, de 3,7 (1,3 para meningitis. El 28% de los casos presentaba factores de riesgo. Las complicaciones alcanzaron el 35,2% y las secuelas el 5%. La letalidad fue del 11,8%. Los serogrupos prevalentes fueron el 19, el 6, el 18, el 5, el 14 y el 23. Conclusiones: El alto porcentaje de casos con factores de riesgo de enfermedad neumocócica invasiva aconseja la implantación de programas de vacunación dirigidos a todos los niños con factores de riesgo. La incidencia de enfermedad neumocócica invasiva encontrada en la Región de Murcia difiere de la de otras zonas geográficas; sin embargo, la incidencia de meningitis es similar a la de otros estudios. La gravedad de la enfermedad justifica la realización de estudios coste-efectividad para valorar la posible incorporación de la vacuna en el calendario vacunal.Objective: Because of the availability of a conjugate pneumococcal

  14. Incidencia de listeriosis invasiva en la Comunidad Valenciana durante el período 2008-2010

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    Olalla Martínez Macias

    2012-01-01

    Full Text Available Fundamento: Listeria monocytogenes es una causa infrecuente de enfermedad, aunque en ciertos grupos (neonatos, ancianos, gestantes e inmunodeprimidos, puede ser causa de meningoencefalitis y bacteriemia. El objetivo del trabajo fue conocer la incidencia de listeriosis invasivas en la Comunidad Valenciana durante el periodo 2008-2010. Métodos: Se realizó un estudio de las listeriosis invasivas detectadas en el periodo 2008-2010. Se consideró "caso" cuando se aisló Listeria a partir de una localización anatómica potencialmente estéril. Como fuente de información se utilizaron los datos procedentes de la Red de Vigilancia Microbiológica Valenciana (RedMIVA. Resultados: Durante el período estudiado se detectaron 98 casos de listeriosis invasivas .Las tasas de incidencia fueron: 0,73 casos/100.000 habitantes en 2008, 0,70 casos/100.000 habitantes en 2009 y 0,58 casos/100.000 habitantes en 2010. El 58% se dieron en varones. El grupo etario con mayor número de casos fue el de 60-80 años (63%. En 57 (58% casos la infección se presentó en forma de bacteriemia y en 30 (31% afectó al sistema nervioso central. En el resto de los casos 11 (11% las infecciones se diagnosticaron en otros órganos. En 90 cepas (92% de los casos pudo realizarse antibiograma y todas fueron sensibles a ampicilina. Conclusiones: La tasa media de listeriosis invasiva en la Comunidad Valenciana en el periodo 2008 a 2010 ha sido de 0,67 casos/100.000 habitantes. No se han detectado agrupaciones temporales o geográficas de casos durante este periodo de tiempo.

  15. Incidencia de enfermedad neumocócica invasiva en Cantabria (1995-2001 e implicaciones para el calendario vacunal

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    González A.

    2003-01-01

    Full Text Available Objetivo: Describir la incidencia de enfermedad neumocócica invasiva en Cantabria en los años 1995-2001. Método: Consulta de los registros del conjunto mínimo básico de datos (CMBD de los hospitales públicos de Cantabria, así como altas de los hospitales privados, registro de enfermedades de declaración obligatoria (EDO, y diagnósticos microbiológicos e historias clínicas de los niños ingresados en el Servicio de Pediatría del Hospital Cantabria (el hospital de referencia de tercer nivel. Resultados: Se obtuvo una incidencia de meningitis de 5,55, 5,03 y 0,76/100.000 en los niños < 2 años, ≥ 2 y < 5 años, y ≥ 5 años de edad, respectivamente, y de enfermedad invasiva de 11,11, 11,32 y 1,49/100.000 en los mismos grupos de edad. Conclusiones: La incidencia en Cantabria de meningitis y de enfermedad invasiva neumocócica es baja. Se discuten los factores a tener en cuenta para introducir la vacuna neumocócica conjugada en el calendario vacunal de Cantabria.

  16. Streptococcus anginosus ("Streptococcus milleri"): the unrecognized pathogen.

    Science.gov (United States)

    Ruoff, K L

    1988-01-01

    "Streptococcus milleri" is an unofficial name that has been applied to a group of streptococci which, although basically similar, show various hemolytic, serological, and physiological characteristics. The species name Streptococcus anginosus has recently been recognized as the approved name for these organisms. Streptococci known as "S. milleri" have been implicated as etiologic agents in a variety of serious purulent infections, but because of their heterogeneous characteristics, these organisms may be unrecognized or misidentified by clinical laboratorians. This review describes the bacteriological aspects of organisms known as "S. milleri," their clinical significance, and the problems encountered with their identification in the clinical laboratory. PMID:3060239

  17. Septicemia with Streptococcus pseudopneumoniae

    DEFF Research Database (Denmark)

    Fuursted, Kurt; Littauer, Pia Jeanette; Greve, Thomas

    2016-01-01

    Streptococcus pseudopneumoniae was described in 2004 as a new human pathogen, acknowledged in a range of clinical infections typically associated to the respiratory tract. This report demonstrates that S. pseudopneumoniae has the potential to cause invasive infection. In blood cultures from three...... patients, growth of an atypical Streptococcus pneumoniae (non-capsular, non-serotypeable, optochin susceptible under ambient atmosphere and bile-intermediately soluble) was recovered. All three patients had a history of a haematological disease (myelodysplastic syndrome and multiple myeloma...

  18. Gene Regulation in Streptococcus pneumoniae: interplay between nutrition and virulence

    NARCIS (Netherlands)

    W.T. Hendriksen (Wouter)

    2010-01-01

    textabstractStreptococcus pneumoniae (the pneumococcus) is a Gram-positive bacterium, which belongs to the species of streptococci. Other pathogenic bacteria belonging to this class include Streptococcus pyogenes, Streptococcus agalactiae, Streptococcus suis, Streptococcus uberis, Streptococcus

  19. Consenso Argentino De Ventilacion No Invasiva Argentine consensus of non-invasive ventilation

    Directory of Open Access Journals (Sweden)

    Ana R. Diez

    2005-10-01

    Full Text Available La ventilación no invasiva (VNI ha alcanzado notable difusión en los últimos años. El ahorro de las complicaciones causadas por la intubación traqueal la hace especialmente atractiva en pacientes que presentan insuficiencia respiratoria aguda (IRA no muy grave y que conservan cierta autonomía respiratoria. También se han descripto efectos terapéuticos en pacientes con insuficiencia respiratoria crónica de etiologías diversas. No obstante, los resultados obtenidos son variables según las circunstancias que motivan su aplicación. A fin de revisar la evidencia a favor de su uso se elaboró este Consenso referido particularmente a la VNI a presión positiva. Se describen su fundamento fisiopatológico, esencial para su correcta aplicación, y el equipamiento necesario para implementarla. La evidencia existente en la literatura establece definida utilidad de la VNI en la exacerbación de la EPOC y en el edema agudo de pulmón cardiogénico (Recomendación A. Su beneficio es aún incierto en pacientes con IRA secundaria a síndrome de dificultad respiratoria aguda, salvo en el subgrupo de pacientes inmunosuprimidos (Recomendación B. Los resultados son también favorables en la desvinculación de la asistencia respiratoria mecánica (ARM, especialmente en pacientes ventilados por exacerbación de EPOC (Recomendación A. En la insuficiencia respiratoria crónica se ha hallado mejoría en la calidad de vida y mayor sobrevida en pacientes con enfermedades restrictivas (Recomendación B, mientras que existe aún controversia sobre su utilidad en pacientes con EPOC estable (Recomendación C. La VNI debe ser aplicada con estándares de cuidados que son establecidos. Se revisan las eventuales complicaciones derivadas de su uso y el beneficio costo-efectividad ahorrando recursos de mayor complejidad y disminuyendo los riesgos que implica la ARM invasiva.Non-invasive ventilation (NIV is nowadays increasingly used. The significant decrease in

  20. Cirugía valvular aórtica mínimamente invasiva

    Directory of Open Access Journals (Sweden)

    Emiliano A. Rodríguez-Caulo

    2016-11-01

    Full Text Available El envejecimiento de la población ha aumentado el número de cirugías sobre la válvula aórtica. Durante los últimos 20 años la técnica quirúrgica ha evolucionado hacia una menor agresión corporal, apareciendo nuevos tipos de cirugía aórtica mínimamente invasiva (CMIAo. De todas estas técnicas, la hemiesternotomía superior (HES, o miniesternotomía, se ha convertido en la más utilizada, seguida por la minitoracotomía anterior derecha (MTA. Ambas, comparadas con la cirugía convencional, han demostrado una recuperación más rápida, mejor resultado cosmético, menor estancia hospitalaria y en UCI, mejor función respiratoria, menor pérdida de sangre y transfusiones, e incluso menor mortalidad precoz y tardía. A pesar de estos avances, su uso no se ha extendido definitivamente debido a un incremento en los tiempos de isquemia y de circulación extracorpórea (CEC necesarios en estos procedimientos más complejos. La aparición de las prótesis sin sutura «Sutureless» de nueva generación puede solventar este contratiempo al reducir hasta en un 43% los tiempos de isquemia y CEC, y permitir que la CMIAo se expanda y sea una alternativa real a las válvulas transcatéter (TAVI en los pacientes de alto riesgo operables. A pesar de que son recomendables ensayos clínicos prospectivos aleatorizados para confirmar estos datos, existe suficiente evidencia disponible como para considerar la CMIAo (sobre todo la HES como el gold standard actual para la sustitución valvular aórtica aislada.

  1. Autismo e doenças invasivas de desenvolvimento Autism and pervasive developmental disorders

    Directory of Open Access Journals (Sweden)

    Carlos A. Gadia

    2004-04-01

    Full Text Available OBJETIVO: Revisar os aspectos neurobiológicos do autismo e das doenças invasivas de desenvolvimento. Oferecer ao pediatra informações atualizadas sobre diagnóstico e tratamento. FONTES DOS DADOS: Revisão bibliográfica, abordando o tema por meio do sistema MEDLINE e procura direta. SÍNTESE DOS DADOS: Conforme dados da literatura, o autismo é a terceira mais comum desordem no desenvolvimento, ocorrendo em 40 a 130 casos por 100.000. O diagnóstico é clínico, baseado nos critérios do DSM-IV. Os exames de neuroimagem e neurofetologia e os estudos genéticos contribuem para o melhor entendimento da neurobiologia do autismo. CONCLUSÃO: O pediatra é o primeiro médico a entrar em contato com o paciente autista e deve estar apto para reconhecer os desvios do desenvolvimento e orientar a investigação e o tratamento multidisciplinar.OBJECTIVE: To review the current knowledge on neurobiological aspects of autism and pervasive developmental disorders, as well as to provide pediatricians with up to date information on diagnosis and treatment of autism. SOURCES OF DATA: Review of MEDLINE and Internet. SUMMARY OF THE FINDINGS: Autism is the 3rd developmental disorder, with an incidence of 40 to 130/100,000 individuals. Diagnosis is based on clinical findings, following DSM IV criteria. Neuroimaging, investigation of fetal neurological status, and genetic investigation contribute towards a better understanding of the neurobiology of autism. CONCLUSION: Pediatricians are the first health professional to come in contact with patients with autism. Thus, they should be able to diagnose and to coordinate the multidisciplinary treatment of these patients.

  2. Cirugía valvular mitral mínimamente invasiva

    Directory of Open Access Journals (Sweden)

    Gemma Sánchez-Espín

    2016-11-01

    Full Text Available Durante las últimas 2 décadas, la cirugía cardíaca ha evolucionado hacia procedimientos menos invasivos, buscando una menor agresión corporal y la rápida recuperación del paciente, resultando estos procedimientos más atractivos para los pacientes y para los cardiólogos clínicos. En la actualidad, la cirugía mitral mínimamente invasiva (CMIVMi se ha consolidado como una alternativa para los pacientes con patología de la válvula mitral. Comparada con la cirugía mitral convencional (mediante esternotomía media completa, y tras superar una curva de aprendizaje inicial, resulta ser una técnica segura y efectiva, con equivalentes resultados en el seguimiento a corto y largo plazo. A pesar de acompañarse de un incremento en los tiempos quirúrgicos (tiempo de isquemia y de circulación extracorpórea, la CMIVMi se asocia a menor estancia hospitalaria y en unidades de cuidados intensivos, menores pérdidas hemáticas y transfusiones, extubación precoz y menos arritmias, y permite una recuperación más rápida del paciente junto con un mejor resultado cosmético. Por ello, la CMIVMi resulta ser una técnica en continuo auge en distintos centros, aunque serían recomendables estudios prospectivos aleatorizados, que permitan una mejor valoración de los resultados clínicos y en términos de coste-eficiencia.

  3. Tratamento cirúrgico das fraturas articulares desviadas do calcâneo por abordagem minimamente invasiva

    OpenAIRE

    Lopes,Fernando Araújo Silva; Pinto,Roberto Zambelli de Almeida; Gonçalves,Eduardo Luiz Nogueira; Melo,Gustavus Lemos Ribeiro; Leal,Renata Tavares dos Reis

    2008-01-01

    OBJETIVOS: Avaliar pacientes com fraturas articulares do calcâneo tratados entre dezembro de 2000 e agosto de 2007 por técnica cirúrgica minimamente invasiva, com ênfase nos resultados e complicações. MÉTODOS: Estudo retrospectivo de 21 pacientes com 22 fraturas desviadas do calcâneo, tratadas com redução aberta ou fechada e fixação mínima. Nos 16 pacientes nos quais foi necessária a redução aberta, utilizou-se o acesso lateral direto e em nenhum placas ou enxerto ósseo. RESULTADOS: O seguime...

  4. Controlled Human Infection for Vaccination Against Streptococcus Pyogenes

    Science.gov (United States)

    2018-03-07

    Streptococcus Pyogenes Pharyngitis; Streptococcus Pharyngitis; Strep Throat; Streptococcus Pyogenes Infection; Group A Streptococcus: B Hemolytic Pharyngitis; Group A Streptococcal Infection; Gram-Positive Bacterial Infections; Bacterial Infections

  5. Colonização e resistência antimicrobiana de Streptococcus pneumoniae isolado em nasofaringe de crianças com rinofaringite aguda Nasopharyngeal colonization and antimicrobial resistance of Streptococcus pneumoniae isolated in children with acute rinofaringitis

    Directory of Open Access Journals (Sweden)

    Lêda Lúcia M. Ferreira

    2001-06-01

    Full Text Available OBJETIVO: avaliar a prevalência e os fatores de risco para a colonização nasofaríngea e determinar o padrão de suscetibilidade à penicilina de cepas isoladas da nasofaringe de crianças com rinofaringite aguda. METODOLOGIA: No período de 16/6/97 a 20/5/98 foram coletados 400 Swabs da nasofaringe de crianças com idade entre três meses e cinco anos que apresentavam quadro clínico de rinofaringite aguda. A identificação do S. pneumoniae foi realizada através do teste de optoquina e solubilidade em bile. Todas as cepas foram triadas através do disco de oxacilina 1mg, sendo avaliada, posteriormente, a concentração inibitória mínima para penicilina pelo método do E-teste. RESULTADOS: A prevalência da colonização nasofaríngea pelo S. pneumoniae foi de 35%. A análise dos fatores de risco associados à colonização nasofaríngea indicou que as crianças que eram institucionalizadas e que tinham irmãos menores de cinco anos apresentaram uma taxa maior de colonização. A prevalência de cepas não suscetíveis à penicilina foi de 16%. Todas as cepas apresentaram resistência intermediária (0,1mcg/ ml £ CIM £ 1,0 mcg/ ml . Das 19 cepas com resistência à penicilina, 7 tinham resistência intermediária (37%, e duas (11% resistência elevada ao cotrimoxazol. Não foi observada resistência à ceftriaxona, amoxicilina, claritromicina ou cloranfenicol. CONCLUSÕES: Concluímos que a prevalência da colonização nasofaríngea pelo pneumococo, em crianças menores de cinco anos com quadro de rinofaringite aguda, foi de 34,8%; as que eram institucionalizadas e tinham irmãos menores apresentaram uma maior taxa de colonização. A resistência à penicilina ocorreu em 15,6% dos isolados, não sendo detectada nenhuma cepa com resistência elevada. A taxa de resistência bacteriana encontrada foi bastante próxima à encontrada em estudo de infecções invasivas. Este fato sugere que os isolados de pneumococo da nasofaringe de crian

  6. Group B Streptococcus and Pregnancy

    Science.gov (United States)

    f AQ FREQUENTLY ASKED QUESTIONS FAQ105 PREGNANCY Group B Strep and Pregnancy • What is group B streptococcus (GBS)? • What does it mean to be ... a planned cesarean birth? •Glossary What is group B streptococcus (GBS)? Group B streptococcus is one of ...

  7. Fusión intersomática lumbar extraforaminal mínimamente invasiva

    Science.gov (United States)

    Landriel, Federico; Hem, Santiago; Rasmussen, Jorge; Vecchi, Eduardo; Yampolsky, Claudio

    2018-01-01

    Resumen Objetivo: El objetivo del presente trabajo es mostrar la indicación, técnica quirúrgica, resultados y complicaciones de la vía de abordaje extraforaminal para fusión intersomática (ELIF) mínimamente invasiva. Introducción: El ELIF se caracteriza por la remoción del proceso articular superior (PAS) y el acceso a la raíz intracanalicular y disco a través del triángulo de seguridad de Kambin. Material y Métodos: Estudio retrospectivo de 40 pacientes operados consecutivamente entre el 2013 y 2015. Se incluyeron pacientes con lumbalgia o dolor radicular por enfermedad degenerativa discal, espondilolistesis grado 1 y 2, hernia discal recurrente y estenosis receso-foraminales. Se utilizó la escala visual analógica, el índice de Oswestry, la escala de Weiner y los criterios de MacNab modificados para evaluar el dolor, resultados clínico-funcionales y satisfacción del paciente al año de la cirugía. Las complicaciones fueron documentadas de acuerdo a su gravedad en 4 grados. Resultados: 25 mujeres/15 hombres con una edad promedio de 57 años. El 47.5% fueron tratados por espondilolistesis, el 25% por estenosis receso-foraminal. Se colocaron 54 cajas intersomáticas y 188 tornillos pediculares percutáneos. La duración quirúrgica promedio fue 245 (±25.4) minutos. El tiempo de internación promedio fue 3.5 (±0.49) días. Presentamos 9 complicaciones Grado 1 y una complicación Grado 2. La escala de ODI preoperatoria promedio fue de 51.9 ± 4.96, al año de 12.2 ± 3.19, evidenciando una mejoría significativa (P El 77.5% presentó fusión en los grados 1 y 2 de Bridwel al año del procedimiento quirúrgico. Conclusión: El ELIF es una alternativa de tratamiento quirúrgico segura y eficaz. Se pueden lograr resultados clínicos satisfactorios comparables con las técnicas tradicionales con la resección facetaria limitada al proceso articular superior. PMID:29430325

  8. Bacteremia with Streptococcus pneumoniae

    DEFF Research Database (Denmark)

    Christensen, J S; Jensen, T G; Kolmos, H J

    2012-01-01

    We conducted a hospital-based cohort study among adult patients with first-time Streptococcus pneumoniae bacteremia (SPB) from 2000 through 2008. Patients were identified in a population-based bacteremia database and followed up for mortality through the Danish Civil Registration System (CRS...

  9. O Goodwill gerado pelo Passivo

    Directory of Open Access Journals (Sweden)

    Eliseu Martins

    2017-01-01

    Full Text Available Objetivo: O objetivo deste estudo está relacionado à figura do Goodwill originado do Passivo de uma empresa, ou seja, não é a do Goodwill normalmente constituído pelos Ativos Intangíveis capazes de produzir uma rentabilidade anormal e que fazem com que o valor da entidade como um todo, em funcionamento, seja maior do que a soma algébrica dos valores justos de seus elementos patrimoniais. Trata-se de uma visão que se pode entender como novidade para muitos, ou seja, a do Goodwill originado do Passivo e, não, dos Ativos de uma empresa. Existem empresas que sequer conseguem remunerar o risco que seus Ativos carregam, mas podem apresentar Goodwill devido à forma com que suas atividades são financiadas. Método: Como ensaio, são apresentados conceitos básicos e de formulação, normalmente utilizados em avaliações de empresas. Na sequência, são apresentadas simulações que demonstram, de forma objetiva, o verdadeiro sentido técnico da formulação. Resultados: Sabendo-se que determinadas agências estatais de desenvolvimento e o próprio BNDES acabam financiando determinadas atividades com taxas de juros generosas, este estudo apresenta ainda um caso real de existência de Goodwill originado do Passivo de uma empresa brasileira. Contribuições: Este trabalho tem como uma de suas principais contribuições a exposição de um tema que é praticamente desconhecido no mundo acadêmico, totalmente desconsiderado pelas normas e legislações contábeis, mas presente no mundo dos analistas e investidores mais bem preparados, e o faz pela não disseminação desse conceito, com apresentação e redação acessíveis a todos os níveis de leitores.

  10. Estimación no invasiva de la frecuencia cardiaca fetal mediante técnicas de separación ciega de fuentes

    Directory of Open Access Journals (Sweden)

    Luis O. Sarmiento, PhD. (C Ing

    2010-07-01

    El objetivo de este trabajo es utilizar técnicas de procesamiento de señales para extraer de manera no invasiva el electrocardiograma fetal partiendo del electrocardiograma superficial de la madre a fin de obtener una estimación de la frecuencia cardiaca fetal.

  11. DETECÇÃO DO Streptococcus agalactiae REALIZADO NO HOSPITAL UNIVERSITÁRIO DE SANTA MARIA

    OpenAIRE

    Magda Cristina Souza Marques Roehrs

    2012-01-01

    A colonização cérvico-vaginal pelo Streptococcus agalactiae em gestantes favorece a infecção neonatal de início precoce, podendo causar septicemia, meningite e pneumonia no neonato. O objetivo deste estudo foi verificar os índices de ocorrência da detecção do Streptococcus agalactiae em pacientes adultos atendidos no Hospital Universitário de Santa Maria (HUSM), Rio Grande do Sul, Brasil, no período de 2007 a 2010. Também foi realizado um apanhado histórico dos guias Centers fo...

  12. Colonización nasofaringea y enfermedad invasiva por "Streptococcus pneumoniae" en niños menores de 5 años

    OpenAIRE

    Díaz Conradi, Álvaro

    2010-01-01

    El trabajo de tesis se presenta en la modalidad de publicación y compendio resumen de las investigaciones de las cuales ha formado parte el doctorando. Las publicaciones cumplen los criterios de inclusión para su presentación relacionados con el Factor de Impacto y en concordancia con las reglas en uso del Programa de Doctorado.1) Diaz-Conradi A, Calbo A, Cuchí E, Puig RG, Garcia-Rey C, Boada LT, et al. Impact of amoxicilin, associated or not with clavulanic acid, on pharyngeal colonization ...

  13. Delirium em pacientes na unidade de terapia intensiva submetidos à ventilação não invasiva: um inquérito multinacional

    Directory of Open Access Journals (Sweden)

    Lilian Maria Sobreira Tanaka

    2015-12-01

    Full Text Available RESUMO Objetivos: Conduzir um inquérito multinacional com profissionais de unidades de terapia intensiva para determinar as práticas relacionadas à avaliação e ao manejo do delirium, bem como as percepções e as atitudes relacionadas à avaliação e ao impacto do delirium em pacientes submetidos à ventilação não invasiva. Métodos: Foi elaborado um questionário eletrônico para avaliar o perfil dos respondedores e das unidades de terapia intensiva a eles relacionadas; a realização de avaliação sistemática e a forma de manejo do delirium; e as percepções e condutas dos profissionais com relação à presença de delirium em pacientes submetidos à ventilação não invasiva. O questionário foi distribuído por meio da mala direta de correio eletrônico da rede de cooperação em pesquisa clínica da Associação de Medicina Intensiva Brasileira (AMIB-Net e para pesquisadores em diferentes centros da América Latina e Europa. Resultados: Foram analisados 436 questionários que, em sua maioria, eram provenientes do Brasil (61,9%, seguidos por Turquia (8,7% e Itália (4,8%. Aproximadamente 61% dos respondedores relataram não proceder à avaliação de delirium na unidade de terapia intensiva, enquanto 31% a realizavam em pacientes submetidos à ventilação não invasiva. Confusion Assessment Method for the Intensive Care Unit foi a ferramenta diagnóstica validada mais frequentemente citada (66,9%. Com relação à indicação de ventilação não invasiva para pacientes em delirium, 16,3% dos respondedores nunca permitiam o uso de ventilação não invasiva neste contexto clínico. Conclusão: Este inquérito fornece dados que enfatizam a escassez de esforços direcionados à avaliação e ao manejo do delirium no ambiente da terapia intensiva, em especial nos pacientes submetidos à ventilação não invasiva.

  14. Genetic Transformation of Streptococcus mutans

    OpenAIRE

    Perry, Dennis; Kuramitsu, Howard K.

    1981-01-01

    Three strains of Streptococcus mutans belonging to serotypes a, c, and f were transformed to streptomycin resistance by deoxyribonucleic acids derived from homologous and heterologous streptomycin-resistant strains of S. mutans and Streptococcus sanguis strain Challis. Homologous transformation of S. mutans was less efficient than heterologous transformation by deoxyribonucleic acids from other strains of S. mutans.

  15. O MARKETING ORIENTADO PELO MERCADO

    Directory of Open Access Journals (Sweden)

    Sandro Deretti

    2005-11-01

    -style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} -->

    Resumo

    A economia globalizada determinou alterações profundas no processo estratégico das empresas, propiciando oportunidades e ameaças em todos os segmentos e exigindo produtos e serviços competitivos. Assim, diante deste cenário extremamente desafiador, a função marketing dentro das empresas assume maior importância no desenvolvimento de vantagens competitivas sustentáveis e na redução das incertezas. Muitos autores consideram que a orientação para o mercado seja a essência da filosofia empresarial que leva ao sucesso nesta luta pelos mercados porque investiga desejos e necessidades do consumidor. Este artigo faz uma contextualização dos principais trabalhos que colaboraram para a estruturação do conceito de marketing e da orientação para o mercado.

     

  16. Multiplex PCR-based identification of Streptococcus canis, Streptococcus zooepidemicus and Streptococcus dysgalactiae subspecies from dogs.

    Science.gov (United States)

    Moriconi, M; Acke, E; Petrelli, D; Preziuso, S

    2017-02-01

    Streptococcus canis (S. canis), Streptococcus equi subspecies zooepidemicus (S. zooepidemicus) and Streptococcus dysgalactiae subspecies (S. dysgalactiae subspecies) are β-haemolytic Gram positive bacteria infecting animals and humans. S. canis and S. zooepidemicus are considered as two of the major zoonotic species of Streptococcus, while more research is needed on S. dysgalactiae subspecies bacteria. In this work, a multiplex-PCR protocol was tested on strains and clinical samples to detect S. canis, S. dysgalactiae subspecies and S. equi subspecies bacteria in dogs. All strains were correctly identified as S. canis, S. equi subspecies or S. dysgalactiae subspecies by the multiplex-PCR. The main Streptococcus species isolated from symptomatic dogs were confirmed S. canis. The multiplex-PCR protocol described is a rapid, accurate and efficient method for identifying S. canis, S. equi subspecies and S. dysgalactiae subspecies in dogs and could be used for diagnostic purposes and for epidemiological studies. Copyright © 2016 Elsevier Ltd. All rights reserved.

  17. Delineation of Streptococcus dysgalactiae, its subspecies, and its clinical and phylogenetic relationship to Streptococcus pyogenes

    DEFF Research Database (Denmark)

    Jensen, Anders; Kilian, Mogens

    2011-01-01

    The close phylogenetic relationship of the important pathogen Streptococcus pneumoniae and several species of commensal streptococci, particularly Streptococcus mitis and Streptococcus pseudopneumoniae, and the recently demonstrated sharing of genes and phenotypic traits previously considered...

  18. Reoperação da valva mitral minimamente invasiva sem pinçamento da aorta

    Directory of Open Access Journals (Sweden)

    Rodrigo Milani

    2013-09-01

    Full Text Available INTRODUÇÃO: Reoperações da valva mitral apresentam maior índice de complicações quando comparadas com a primeira cirurgia. Com o domínio das técnicas videoassistidas para as primeiras cirurgias da valva mitral, os casos de reoperações passaram a despertar interesse para esses procedimentos menos invasivos. OBJETIVO: Analisar os resultados e as dificuldades técnicas da retroca valvar mitral minimamente invasiva em 10 pacientes. MÉTODO: A circulação extracorpórea foi instalada por meio de colocação de cânulas femorais e cânula na veia jugular interna direita, conduzida em 28 graus de temperatura em fibrilação ventricular. Realizada toracotomia lateral direita com 5 a 6 cm no terceiro ou quarto espaço intercostal. Pericárdio foi descolado apenas na região do átrio esquerdo no ponto da atriotomia. A aorta não foi pinçada. RESULTADOS: Foram avaliados 10 pacientes com idade média de 56,9±10,5 anos. Quatro encontravam-se em ritmo de fibrilação atrial e 6 em ritmo sinusal. O tempo médio entre a primeira operação e a reoperações foi de 11 ± 3,43 anos. O EuroSCORE médio do grupo foi de 8,3 ± 1,82. O tempo médio de fibrilação ventricular e de circulação extracorpórea foi respectivamente 70,9 ± 17,66 min e 109,4 ± 25,37 min. O tempo médio de internamento foi de 7,6 ± 1,5 dias. Não houve óbitos nessa série. CONCLUSÃO: A reoperação da valva mitral pode ser feita por meio de técnicas menos invasivas com bons resultados imediatos e baixa morbimortalidade. Entretanto, esse tipo de cirurgia requer maior tempo de circulação extracorpórea, especialmente nos casos em que o paciente já tenha uma prótese. A presença de uma mínima insuficiência aórtica também torna esse procedimento tecnicamente mais desafiador.

  19. Streptococcus suis infection

    Science.gov (United States)

    Feng, Youjun; Zhang, Huimin; Wu, Zuowei; Wang, Shihua; Cao, Min; Hu, Dan; Wang, Changjun

    2014-01-01

    Streptococcus suis (S. suis) is a family of pathogenic gram-positive bacterial strains that represents a primary health problem in the swine industry worldwide. S. suis is also an emerging zoonotic pathogen that causes severe human infections clinically featuring with varied diseases/syndromes (such as meningitis, septicemia, and arthritis). Over the past few decades, continued efforts have made significant progress toward better understanding this zoonotic infectious entity, contributing in part to the elucidation of the molecular mechanism underlying its high pathogenicity. This review is aimed at presenting an updated overview of this pathogen from the perspective of molecular epidemiology, clinical diagnosis and typing, virulence mechanism, and protective antigens contributing to its zoonosis. PMID:24667807

  20. Perfuração do colo por colite amebiana invasiva durante terapia anti-TNF para espondiloartrite♧

    Directory of Open Access Journals (Sweden)

    Juan Pablo Restrepo

    2014-12-01

    Full Text Available O bloqueio do TNF tem tido sucesso no tratamento de algumas doenças reumáticas, como a espondiloartrite. Relatam-se muitas complicações infecciosas com a terapia anti-TNF, principalmente infecções bacterianas, micobacterianas, virais e fúngicas. A Entamoeba histolytica é um protozoário extracelular que causa principalmente colite e abscesso hepático, sendo que a perfuração intestinal é uma complicação rara, com alta mortalidade. O TNF é considerado o principal mediador da imunidade celular contra a amebíase. Inicialmente, é quimiotático para a E. histolytica, potencializando sua adesão ao enterócito por meio da lectina galactose-inibível, e depois ativando os macrófagos para matarem a ameba pela liberação de NO; assim, o bloqueio do TNF poderia ser prejudicial, aumentando a virulência amebiana. Descreve-se o caso de uma mulher de 46 anos com espondiloartrite que apresentou uma perfuração do colo por colite amebiana invasiva durante uso de anti-TNF.

  1. Fobia: um sintoma marcado pelo real

    Directory of Open Access Journals (Sweden)

    Katja Linnemann

    Full Text Available O artigo pretende introduzir o questionamento acerca dos sintomas marcados pelo real, a partir da análise do sintoma fóbico do caso clínico de Freud, o “Pequeno Hans”. Por um lado, o sintoma como formação de compromisso (Freud, e como formação do inconsciente (Lacan, vem no lugar de algo que não pode ser sabido pelo sujeito, isto que é recalcado e endereçado ao Outro. Por outro, a fobia traz a particularidade de ser marcada por um real, carente de interdição paterna, sem visar um deciframento por parte do sujeito.

  2. Streptococcus zooepidemicus and Streptococcus equi evolution: the role of CRISPRs.

    Science.gov (United States)

    Waller, Andrew S; Robinson, Carl

    2013-12-01

    The host-restricted bacterium Streptococcus equi is the causative agent of equine strangles, the most frequently diagnosed infectious disease of horses worldwide. The disease is characterized by abscessation of the lymph nodes of the head and neck, leading to significant welfare and economic cost. S. equi is believed to have evolved from an ancestral strain of Streptococcus zooepidemicus, an opportunistic pathogen of horses and other animals. Comparison of the genome of S. equi strain 4047 with those of S. zooepidemicus identified examples of gene loss due to mutation and deletion, and gene gain through the acquisition of mobile genetic elements that have probably shaped the pathogenic specialization of S. equi. In particular, deletion of the CRISPR (clustered regularly interspaced short palindromic repeats) locus in the ancestor of S. equi may have predisposed the bacterium to acquire and incorporate new genetic material into its genome. These include four prophages and a novel integrative conjugative element. The virulence cargo carried by these mobile genetic elements is believed to have shaped the ability of S. equi to cause strangles. Further sequencing of S. zooepidemicus has highlighted the diversity of this opportunistic pathogen. Again, CRISPRs are postulated to influence evolution, balancing the need for gene gain over genome stability. Analysis of spacer sequences suggest that these pathogens may be susceptible to a limited range of phages and provide further evidence of cross-species exchange of genetic material among Streptococcus pyogenes, Streptococcus agalactiae and Streptococcus dysgalactiae.

  3. Antigens of Streptococcus sanguis

    Science.gov (United States)

    Rosan, Burton

    1973-01-01

    An antigenic analysis of the alpha-hemolytic streptococci isolated from dental plaque was performed by use of antisera against a strain of Streptococcus sanguis (M-5) which was isolated from dental plaque. Immunoelectrophoretic and Ouchterlony tests of Rantz and Randall extracts of 45 strains gave positive reactions with the M-5 antisera. These strains represented 60% of the strains tested. The number of antigens which could be identified in these extracts varied from one to five and were designated a to e. The a antigen was found in 36 of the strains tested, including reference strains of S. sanguis and the group H streptococci. The strains reacting with the M-5 antisera were divided into two majors types: type I consisted of 23 strains in which the a antigen was found alone or with one or more of the c, d, and e antigens; type II consisted of 13 strains in which both the a and b antigens were found with or without one or more of the c, d, and e antigens. The remaining strains contained, either singly or in combination, the b, c, d, and e antigens but not the a antigen. Biochemical tests of representatives of each serotype and reference strains indicated that strains reacting with M-5 antisera were S. sanguis. These findings suggest that S. sanguis strains share common physiological and serological properties. Images PMID:4633291

  4. A Highly Arginolytic Streptococcus Species That Potently Antagonizes Streptococcus mutans.

    Science.gov (United States)

    Huang, Xuelian; Palmer, Sara R; Ahn, Sang-Joon; Richards, Vincent P; Williams, Matthew L; Nascimento, Marcelle M; Burne, Robert A

    2016-01-29

    The ability of certain oral biofilm bacteria to moderate pH through arginine metabolism by the arginine deiminase system (ADS) is a deterrent to the development of dental caries. Here, we characterize a novel Streptococcus strain, designated strain A12, isolated from supragingival dental plaque of a caries-free individual. A12 not only expressed the ADS pathway at high levels under a variety of conditions but also effectively inhibited growth and two intercellular signaling pathways of the dental caries pathogen Streptococcus mutans. A12 produced copious amounts of H2O2 via the pyruvate oxidase enzyme that were sufficient to arrest the growth of S. mutans. A12 also produced a protease similar to challisin (Sgc) of Streptococcus gordonii that was able to block the competence-stimulating peptide (CSP)-ComDE signaling system, which is essential for bacteriocin production by S. mutans. Wild-type A12, but not an sgc mutant derivative, could protect the sensitive indicator strain Streptococcus sanguinis SK150 from killing by the bacteriocins of S. mutans. A12, but not S. gordonii, could also block the XIP (comX-inducing peptide) signaling pathway, which is the proximal regulator of genetic competence in S. mutans, but Sgc was not required for this activity. The complete genome sequence of A12 was determined, and phylogenomic analyses compared A12 to streptococcal reference genomes. A12 was most similar to Streptococcus australis and Streptococcus parasanguinis but sufficiently different that it may represent a new species. A12-like organisms may play crucial roles in the promotion of stable, health-associated oral biofilm communities by moderating plaque pH and interfering with the growth and virulence of caries pathogens. Copyright © 2016, American Society for Microbiology. All Rights Reserved.

  5. Purulent Pericarditis Caused by Group A Streptococcus

    OpenAIRE

    Bhaduri-McIntosh, Sumita; Prasad, Meeta; Moltedo, José; Vázquez, Marietta

    2006-01-01

    Purulent pericarditis is a rare disease that is most often caused by organisms such as Staphylococcus aureus, Streptococcus pneumoniae, viridans streptococci, Haemophilus influenzae, and anaerobic bacteria. We present an unusual case of purulent pericarditis caused by Streptococcus pyogenes, Lancefield group A streptococcus (GAS), and we provide a review of the literature.

  6. Ventilación mecánica no invasiva y oxigenoterapia de alto flujo en el tratamiento de la insuficiencia respiratoria

    OpenAIRE

    Molinero Herrero, Nuria

    2017-01-01

    Trabajo de fin de Grado. Grado en Enfermería (Zamora). Curso académico 2016/2017 [ES]La enfermedad obstructiva crónica (EPOC) está incluida en las enfermedades que pueden asociar a insuficiencia respiratoria. El tratamiento de soporte ventilatorio de elección es la ventilación mecánica no invasiva (VMNI) por las múltiples ventajas que ofrece. Actualmente se está desarrollando el uso de la oxigenoterapia de alto flujo (ONAF) en pacientes con insuficiencia respiratoria hipoxémica...

  7. Medida no invasiva de la presión arterial central mediante tonometría por aplanamiento. Análisis de la onda de pulso

    Directory of Open Access Journals (Sweden)

    Dr. Alvaro Hermida Amejeiras

    2012-12-01

    Full Text Available La tonometría por aplanamiento (TA es una medida indirecta, no invasiva, reproducible y validada para estimar la forma de la onda de pulso aórtica13. La propia forma de la onda de pulso, junto con la amplitud de la misma o su duración aportan información útil para el diagnóstico y manejo de diferentes entidades nosológicas (ej. cambios asociados al envejecimiento, hipertensión arterial, cardiopatía isquémica, diabetes mellitus, hábito tabáquico,....

  8. Evaluación del dolor en pacientes sometidos a ventilación mecánica invasiva ingresados en las unidades de cuidados intensivos

    OpenAIRE

    Ferreras Llamazares, Cristina

    2012-01-01

    Introducción. La valoración del dolor presenta especial dificultad en pacientes críticos, en concreto en pacientes sometidos a ventilación mecánica invasiva, ya que no pueden comunicar este dolor. Objetivos. • Conocer en los enfermeros, el grado de conocimientos y la utilización de escalas del dolor en pacientes sometidos a ventilación mecánica. • Conocer la prevalencia, grado de dolor y las respuestas fisiológicas de los pacientes, antes, durante y después del cambio postural reali...

  9. Streptococcus agalactie como agente etiológico de Doença Sexualmente Transmissível Streptococcus agalactie involved in the etiology of Sexually Transmitted Diseases

    Directory of Open Access Journals (Sweden)

    Marcos Noronha Frey

    2011-12-01

    Full Text Available O Streptococcus agalactie é um importante micro-organismo causador de doenças em gestantes, neonatos, idosos (maiores de 65 anos de idade, e portadores de doenças crônicas debilitantes, sendo um patógeno incomum em pacientes que não se enquadrem nestas faixas etárias ou perfil clínico (1-5, e, raramente, é descrito como agente causador de doenças sexualmente transmissíveis. Descrevemos o caso de um adulto jovem hígido de 19 anos, apresentando lesões ulceradas genitais e oral, assim como corrimento uretral e ocular, sugestivas de terem sido causadas pelo Streptococcus agalactie, e adquiridas através do contato sexual (doenças sexualmente transmissíveis.Streptococcus agalactiae is an important microorganism involved in a number of conditions in pregnant women, newborns, elderly people (over 65 years of age and individuals with chronic disabling illnesses. This pathogen is infrequently found among patients outside this age range or clinical profile(1-5 and is rarely reported in the etiology of sexually transmitted diseases. Here we describe a case of an otherwise healthy 19 year-old male, who presented with ulcerative genital and oral lesions in association with urethral and ocular discharge, suggestive of Streptococcus agalactiae infection acquired through sexual contact.

  10. Prevalência do Streptococcus agalactiae em gestantes detectada pela técnica de reação em cadeia da polimerase (PCR)

    OpenAIRE

    Silveira, José Luiz Saldanha da

    2006-01-01

    Introdução: a doença invasiva pelo estreptococo do grupo B (EGB) emergiu como a principal causa de mortalidade e morbidade no período neonatal nos Estados Unidos da América do Norte em 1970, e durante os últimos 20 anos tem-se mantido como a principal causa de sepsis de início precoce, meningite e pneumonia entre recém-nascidos. Em 1992, a Academia Americana de Pediatria, o Colégio Americano de Obstetrícia e Ginecologia e o Centro de Controle e Prevenção de Doenças nos Estados Unidos da Améri...

  11. Colecistitis aguda por Streptococcus constellatus

    Directory of Open Access Journals (Sweden)

    M Sandra Gómez-Canosa

    2016-03-01

    Full Text Available Presentamos el caso de una paciente de edad avanzada y significativa comorbilidad que se diagnosticó de colecistitis aguda por Streptococcus constellatus. El drenaje de la vesícula biliar por colecistostomía percutánea, asociado a penicilinas, ha conseguido una evolución favorable. We report the case of a patient of advanced age and significant comorbidity diagnosed acute cholecystitis by Streptococcus constellatus. Gallbladder drainage by percutaneous cholecystostomy associated with penicillins has achieved a favorable outcome.

  12. Esplenectomia e ligadura da veia gástrica esquerda na esquistossomose mansônica: efeito sobre a pressão das varizes de esôfago aferida por tecnica não-invasiva

    Directory of Open Access Journals (Sweden)

    Claudio Moura Lacerda

    Full Text Available Em ambos os hospitais universitários de Pernambuco, o tratamento de escolha para portadores de esquistossomose hepatoesplênica (EHE com antecedente de hemorragia digestiva alta (HDA por rotura de varizes de esôfago (VE é a esplenectomia associada à ligadura da veia gástrica esquerda (ELGE; porém, o impacto desta cirurgia sobre a pressão das VE, provavelmente, o parâmetro que melhor se correlaciona com o risco de recidiva hemorrágica, ainda não foi estudado. Com a introdução, em nosso meio, de técnica não-invasiva de medição da pressão das VE, isto tornou-se possível, com mínimos riscos, tomando-se o objetivo do presente estudo. A ELGE foi empregada em vinte portadores de EHE com antecedentes de HDA. A pressão das VE foi medida através do método endoscópico não-invasivo do balão pneumático, antes da cirurgia, e estes valores comparados com novas medições realizadas cinco a oito dias após. A pressão nas VE no pré-operatório variou entre 20,0 e 28,7mmHg (média de 24,35± 2,36 mmHg. Não houve correlação da pressão com o calibre das VE. No pós-operatório (PO, observou-se uma queda significante na pressão das VE, que variou entre 14,6 e 21,5 mmHg (média 17,29± 1,75 mmHg, p<0,001. Os resultados do presente trabalho confirmam as idéias que fundamentam a indicação da ELGE em portadores de EHE com antecedente de HDA. Esta cirurgia determina, pelo menos a curto prazo e na ampla maioria dos casos, uma redução na pressão das VE reduzindo o risco de recidiva de HDA.

  13. Recommended conservation of the names Streptococcus sanguis, Streptococcus rattus, Streptococcus cricetus, and seven other names included in the Approved Lists of Bacterial Names. Request for an opinion

    DEFF Research Database (Denmark)

    Kilian, Mogens

    2001-01-01

    With reference to the first Principle of the International Code of Nomenclature of Bacteria, which emphasizes stability of names, it is proposed that the original names Streptococcus sanguis, Streptococcus rattus, Streptococcus cricetus, Erwinia ananas, Eubacterium tarantellus, Lactobacillus sake...

  14. Adolescentes e crack: pelo caminho das pedras

    Directory of Open Access Journals (Sweden)

    Eduardo Tomm

    2013-12-01

    Full Text Available Nos últimos anos, a sociedade tem observado uma rápida expansão no uso de crack, especialmente por adolescentes e jovens. É evidente a necessidade de ouvir esses sujeitos de para melhor compreender sua situação. Para atender a essa necessidade, desenvolvemos uma pesquisa qualitativa descritivo-exploratória cujo foco foi um grupo terapêutico para adolescentes usuários de crack que ocorreu no Centro de Atenção Psicossocial Infanto-Juvenil (CAPSi em uma cidade do interior do Rio Grande do Sul, Brasil. Amparados na modalidade expost-facto, analisamos documentos produzidos nessa instituição. O resultado foi uma cartografia que acompanhou discursivamente os adolescentes pelo "caminho das pedras": os lugares, tratamentos, pessoas, ideias e momentos dos quais falam.

  15. Recombination-deficient Streptococcus sanguis

    International Nuclear Information System (INIS)

    Daneo-Moore, L.; Volpe, A.

    1985-01-01

    A UV-sensitive derivative was obtained from Streptococcus sanguis Challis. The organism could be transformed with a number of small streptococcal plasmids at frequencies equal to, or 1 logarithm below, the transformation frequencies for the parent organism. However, transformation with chromosomal DNA was greatly impaired in the UV-sensitive derivative

  16. Experiência inicial com operações cardíacas minimamente invasivas Initial experience with minimally invasive cardiac operations

    Directory of Open Access Journals (Sweden)

    Francisco Costa

    2012-09-01

    Full Text Available INTRODUÇÃO: Operações cardíacas minimamente invasivas têm sido propostas como uma alternativa para a correção de diversas cardiopatias congênitas e adquiridas, com o intuito de reduzir a morbimortalidade. OBJETIVOS: Descrever a experiência inicial de dois anos com operações cardíacas minimamente invasivas, com ênfase nos aspectos técnicos e na curva de aprendizado. MÉTODOS: Entre julho de 2009 a março de 2012, 95 pacientes foram operados com técnicas minimamente invasivas. A média de idade foi de 55±15 anos e 53% pacientes eram do sexo feminino. As operações foram fechamento de comunicação interatrial (25, substituição valvar aórtica (32, plastia mitral (23, substituição valvar mitral (12, ressecção de mixoma de átrio esquerdo (2 e ressecção de membrana subaórtica (1. A incisão consistiu de minitoracotomia lateral direita em 87 casos e de miniesternotomia em oito. RESULTADOS: A mortalidade imediata foi de 4,2%, e o tamanho médio da incisão foi de 6,3 ± 1,2 cm. A extensão da toracotomia só foi necessária em um caso. Dois pacientes apresentaram acidente vascular cerebral, e a quantidade total de sangramento foi de 470 ± 277 ml. Nenhum paciente teve infecção de ferida operatória, e 67% dos casos não apresentaram morbidade pós-operatória significativa. CONCLUSÕES: Os resultados iniciais com operações minimamente invasivas demonstraram que elas podem ser realizadas de forma segura e com resultados iniciais satisfatórios. O índice de satisfação dos pacientes foi elevado. Uma vez ultrapassada a curva de aprendizado, as operações minimamente invasivas podem ser uma excelente alternativa para muitos pacientes com cardiopatias valvares e congênitas.BACKGROUND: Minimally invasive cardiovascular operations have been proposed as an alternative method to correct several cardiac congenital and acquired heart diseases, with the aim to reduce morbidity and mortality. OBJECTIVES: Describe the two years

  17. Enfermedad neumocócica invasiva en la población infantil de la Comunidad Valenciana

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    Goicoechea-Sáez M.

    2003-01-01

    Full Text Available Objetivo: La enfermedad neumocócica es una causa frecuente de morbilidad y mortalidad entre la población infantil. La reciente autorización de la vacuna conjugada heptavalente ha incrementado el interés científico que suscita esta enfermedad. El objetivo de este estudio es conocer las características epidemiológicas y clínicas, así como la evolución de esta enfermedad invasiva en la población infantil de la Comunidad Valenciana. Método: Los datos se han obtenido de las historias clínicas de los niños menores de 15 años, con aislamiento del neumococo, atendidos en todos los hospitales públicos de la Comunidad Valenciana durante el período 1996-2000. La evolución de la incidencia se valoró mediante la comparación de tasas, los signos clínicos y su evolución (secuelas y letalidad mediante la evaluación de la frecuencia y su distribución por edades. Resultados: Se registró un total de 127 casos, lo que representa un promedio de tasa anual de 3,89/105 habitantes en los menores de 15 años y de 20,14 en los menores de 2 años. Presentaron antecedentes de problemas de salud un 29,1% de los pacientes. Las manifestaciones clínicas predominantes fueron sepsis/bacteriemia (38%, neumonía (31% y meningitis (24%. Al alta, presentaban secuelas 10 niños, de los que el 75% eran menores de 2 años. Fallecieron 8 niños (letalidad del 6,3%. Conclusiones: En nuestro medio, durante el período estudiado, la infección neumocócica se presenta sobre todo en los niños menores de 2 años, así como en los mayores de esta edad con antecedentes de problemas de salud. En estos últimos se ha encontrado una mayor mortalidad. Sería conveniente introducir la enfermedad neumocócica en el Sistema de Vigilancia Epidemiológica, lo que nos permitiría disponer de estimaciones más precisas de su evolución epidemiológica y valorar si la vacuna conjugada es la solución a los problemas que plantea esta bacteria en la actualidad.

  18. O uso da ventilação mecânica não-invasiva nos cuidados paliativos de paciente com sarcoma torácico metastático: relato de caso The use of noninvasive mechanical ventilation in the palliative care of a patient with metastatic thoracic sarcoma: case report

    Directory of Open Access Journals (Sweden)

    Mariana Almada Bassani

    2008-06-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Os cuidados paliativos se baseiam na prevenção e alívio do sofrimento, identificando, avaliando e tratando a dor e outros problemas físicos, psicossociais e espirituais. Quadros súbitos de dispnéia são freqüentes em pacientes oncológicos em fase terminal. Nestes casos, a ventilação mecânica não-invasiva pode ser uma boa opção no manuseio da dispnéia, promovendo conforto e permitindo o contato do paciente com seus familiares. O objetivo deste estudo foi apresentar os benefícios obtidos com a ventilação mecânica não-invasiva no paciente sob cuidados paliativos. RELATO DO CASO: Paciente com 29 anos, em pós-operatório imediato de cesariana, admitida na unidade de terapia intensiva (UTI para tratamento de insuficiência respiratória aguda. À radiografia de tórax visualizava-se massa pulmonar a direita. Após investigação clínica e de imagem foi diagnosticado sarcoma torácico metastático em fase avançada, sendo indicadas pela equipe de Oncologia medidas e cuidados paliativos. Para alivio da dispnéia, a equipe multidisciplinar da UTI optou pelo uso de ventilação mecânica não-invasiva (modalidade CPAP + PSV, permitindo a interação da mãe com o bebê e familiares. CONCLUSÕES: No contexto de cuidados paliativos, a VMNI mostrou-se ser um método capaz de contribuir para o controle da dispnéia provendo conforto e alívio ao paciente.BACKGROUND AND OBJECTIVES: Palliative care is based on prevention and relief of suffering, identifying, assessing and treating pain and other physical, psychological, social and spiritual problems. Sudden dyspnea is frequently observed in terminal oncologic patients. In these cases, noninvasive ventilation can be an adequate option to control dyspnea promoting comfort and allowing patient interaction with their relatives. The aim of this article was to present the benefits of noninvasive ventilation in the palliative care setting. CASE REPORT: The case of a 29

  19. Streptococcus pneumoniae Drugs Resistance in Acute Rhinosinusitis

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    Chong Jie Hao

    2016-03-01

    Full Text Available Background: Acute rhinosinusitis that usually caused by Streptococcus pneumoniae becomes the reason why patients seek for medical care. Drugs resistance in Streptococcus pneumoniae is increasing worldwide. This study was conducted to determine drugs resistance of Streptococcus pneumonia from acute rhinosinusitis in Dr. Hasan Sadikin General Hospital. Methods: A descriptive laboratory study was conducted in June–October 2014 at the Laboratory of Microbiology Faculty of Medicine Universitas Padjadjaran. The sample was taken using nasopharyngeal swabbing from 100 acute rhinosinusitis patients in Dr. Hasan Sadikin General Hospital and planted on tryptic soy agar containing 5% sheep blood and 5 μg/ml of gentamicin sulphate and then incubated in 5% CO2 incubator at 37°C for 24 hours. The identification of Streptococcus pneumonia was performed by optochin test. The susceptibility test against Streptococcus pneumoniae was done using disk diffusion method.The antibiotic disks were trimethoprim-sulfamethoxazole, oxacillin, levofloxacin, azithromycin, and doxycycline. Results: Out of 100 samples, 8 of them were tested positive for Streptococcus pneumoniae. Three of Streptococcus pneumoniae isolates died with unknown reason after it were stored at -80 .The drugs resistance test showed the resistance of Streptococcus pneumonia to oxacillin, azithromycin and trimethoprim were 6, whereas levofloxacin and doxycycline are 4. Conclusions: Streptococcus pneumonia drugs resistance in acute rhinosinusitis shows the resistance of Streptococcus pneumoniae to oxacillin, azithromycin and trimethoprim are 6, whereas the resistance to levofloxacin and doxycycline are 4.

  20. Gene Repertoire Evolution of Streptococcus pyogenes Inferred from Phylogenomic Analysis with Streptococcus canis and Streptococcus dysgalactiae

    Science.gov (United States)

    Lefébure, Tristan; Richards, Vince P.; Lang, Ping; Pavinski-Bitar, Paulina; Stanhope, Michael J.

    2012-01-01

    Streptococcus pyogenes, is an important human pathogen classified within the pyogenic group of streptococci, exclusively adapted to the human host. Our goal was to employ a comparative evolutionary approach to better understand the genomic events concomitant with S. pyogenes human adaptation. As part of ascertaining these events, we sequenced the genome of one of the potential sister species, the agricultural pathogen S. canis, and combined it in a comparative genomics reconciliation analysis with two other closely related species, Streptococcus dysgalactiae and Streptococcus equi, to determine the genes that were gained and lost during S. pyogenes evolution. Genome wide phylogenetic analyses involving 15 Streptococcus species provided convincing support for a clade of S. equi, S. pyogenes, S. dysgalactiae, and S. canis and suggested that the most likely S. pyogenes sister species was S. dysgalactiae. The reconciliation analysis identified 113 genes that were gained on the lineage leading to S. pyogenes. Almost half (46%) of these gained genes were phage associated and 14 showed significant matches to experimentally verified bacteria virulence factors. Subsequent to the origin of S. pyogenes, over half of the phage associated genes were involved in 90 different LGT events, mostly involving different strains of S. pyogenes, but with a high proportion involving the horse specific pathogen S. equi subsp. equi, with the directionality almost exclusively (86%) in the S. pyogenes to S. equi direction. Streptococcus agalactiae appears to have played an important role in the evolution of S. pyogenes with a high proportion of LGTs originating from this species. Overall the analysis suggests that S. pyogenes adaptation to the human host was achieved in part by (i) the integration of new virulence factors (e.g. speB, and the sal locus) and (ii) the construction of new regulation networks (e.g. rgg, and to some extent speB). PMID:22666370

  1. Gene repertoire evolution of Streptococcus pyogenes inferred from phylogenomic analysis with Streptococcus canis and Streptococcus dysgalactiae.

    Directory of Open Access Journals (Sweden)

    Tristan Lefébure

    Full Text Available Streptococcus pyogenes, is an important human pathogen classified within the pyogenic group of streptococci, exclusively adapted to the human host. Our goal was to employ a comparative evolutionary approach to better understand the genomic events concomitant with S. pyogenes human adaptation. As part of ascertaining these events, we sequenced the genome of one of the potential sister species, the agricultural pathogen S. canis, and combined it in a comparative genomics reconciliation analysis with two other closely related species, Streptococcus dysgalactiae and Streptococcus equi, to determine the genes that were gained and lost during S. pyogenes evolution. Genome wide phylogenetic analyses involving 15 Streptococcus species provided convincing support for a clade of S. equi, S. pyogenes, S. dysgalactiae, and S. canis and suggested that the most likely S. pyogenes sister species was S. dysgalactiae. The reconciliation analysis identified 113 genes that were gained on the lineage leading to S. pyogenes. Almost half (46% of these gained genes were phage associated and 14 showed significant matches to experimentally verified bacteria virulence factors. Subsequent to the origin of S. pyogenes, over half of the phage associated genes were involved in 90 different LGT events, mostly involving different strains of S. pyogenes, but with a high proportion involving the horse specific pathogen S. equi subsp. equi, with the directionality almost exclusively (86% in the S. pyogenes to S. equi direction. Streptococcus agalactiae appears to have played an important role in the evolution of S. pyogenes with a high proportion of LGTs originating from this species. Overall the analysis suggests that S. pyogenes adaptation to the human host was achieved in part by (i the integration of new virulence factors (e.g. speB, and the sal locus and (ii the construction of new regulation networks (e.g. rgg, and to some extent speB.

  2. Gene repertoire evolution of Streptococcus pyogenes inferred from phylogenomic analysis with Streptococcus canis and Streptococcus dysgalactiae.

    Science.gov (United States)

    Lefébure, Tristan; Richards, Vince P; Lang, Ping; Pavinski-Bitar, Paulina; Stanhope, Michael J

    2012-01-01

    Streptococcus pyogenes, is an important human pathogen classified within the pyogenic group of streptococci, exclusively adapted to the human host. Our goal was to employ a comparative evolutionary approach to better understand the genomic events concomitant with S. pyogenes human adaptation. As part of ascertaining these events, we sequenced the genome of one of the potential sister species, the agricultural pathogen S. canis, and combined it in a comparative genomics reconciliation analysis with two other closely related species, Streptococcus dysgalactiae and Streptococcus equi, to determine the genes that were gained and lost during S. pyogenes evolution. Genome wide phylogenetic analyses involving 15 Streptococcus species provided convincing support for a clade of S. equi, S. pyogenes, S. dysgalactiae, and S. canis and suggested that the most likely S. pyogenes sister species was S. dysgalactiae. The reconciliation analysis identified 113 genes that were gained on the lineage leading to S. pyogenes. Almost half (46%) of these gained genes were phage associated and 14 showed significant matches to experimentally verified bacteria virulence factors. Subsequent to the origin of S. pyogenes, over half of the phage associated genes were involved in 90 different LGT events, mostly involving different strains of S. pyogenes, but with a high proportion involving the horse specific pathogen S. equi subsp. equi, with the directionality almost exclusively (86%) in the S. pyogenes to S. equi direction. Streptococcus agalactiae appears to have played an important role in the evolution of S. pyogenes with a high proportion of LGTs originating from this species. Overall the analysis suggests that S. pyogenes adaptation to the human host was achieved in part by (i) the integration of new virulence factors (e.g. speB, and the sal locus) and (ii) the construction of new regulation networks (e.g. rgg, and to some extent speB).

  3. Adhesion of streptococcus rattus and streptococcus mutans to metal surfaces

    Energy Technology Data Exchange (ETDEWEB)

    Branting, C.; Linder, L.E.; Sund, M.-L.; Oden, A.; Wiatr-Adamczak, E.

    1988-01-01

    The adhesion of Streptococcus rattus BHT and Streptococcus mutans IB to metal specimens of amalgam, silver, tin and copper was studied using (6-/sup 3/H) thymidine labeled cells. In the standard assay the metal specimens were suspended by a nylon thread in an adhesion solution containing a chemically defined bacterial growth medium (FMC), sucrose, and radiolabeled bacteria. Maximum amounts of adhering bacteria were obtained after about 100 min of incubation. Saturation of the metal specimens with bacteria was not observed. Both strains also adhered in the absence of sucrose, indicating that glucan formation was not necessary for adhesion. However, in the presence of glucose, adhesion was only 26-45% of that observed in the presence of equimolar sucrose. Sucrose-dependent stimulation of adhesion seemed to be due to increased cell-to-cell adhesion capacity. Isolated radiolabeled water-insoluble and water-soluble polysaccharides produced from sucrose by S. rattus BHT were not adsorbed to the metal surfaces.

  4. Adhesion of streptococcus rattus and streptococcus mutans to metal surfaces

    International Nuclear Information System (INIS)

    Branting, C.; Linder, L.E.; Sund, M.-L.; Oden, A.; Wiatr-Adamczak, E.

    1988-01-01

    The adhesion of Streptococcus rattus BHT and Streptococcus mutans IB to metal specimens of amalgam, silver, tin and copper was studied using (6- 3 H) thymidine labeled cells. In the standard assay the metal specimens were suspended by a nylon thread in an adhesion solution containing a chemically defined bacterial growth medium (FMC), sucrose, and radiolabeled bacteria. Maximum amounts of adhering bacteria were obtained after about 100 min of incubation. Saturation of the metal specimens with bacteria was not observed. Both strains also adhered in the absence of sucrose, indicating that glucan formation was not necessary for adhesion. However, in the presence of glucose, adhesion was only 26-45% of that observed in the presence of equimolar sucrose. Sucrose-dependent stimulation of adhesion seemed to be due to increased cell-to-cell adhesion capacity. Isolated radiolabeled water-insoluble and water-soluble polysaccharides produced from sucrose by S. rattus BHT were not adsorbed to the metal surfaces. (author)

  5. Streptococcus oligofermentans inhibits Streptococcus mutans in biofilms at both neutral pH and cariogenic conditions

    NARCIS (Netherlands)

    Bao, X.; de Soet, J.J.; Tong, H.; Gao, X.; He, L.; van Loveren, C.; Deng, D.M.

    2015-01-01

    Homeostasis of oral microbiota can be maintained through microbial interactions. Previous studies showed that Streptococcus oligofermentans, a non-mutans streptococci frequently isolated from caries-free subjects, inhibited the cariogenic Streptococcus mutans by the production of hydrogen peroxide

  6. Antibiotic Susceptibility of Periodontal Streptococcus Constellatus and Streptococcus Intermedius Clinical Isolates

    NARCIS (Netherlands)

    Rams, Thomas E; Feik, Diane; Mortensen, Joel E; Degener, John E; van Winkelhoff, Arie J

    2014-01-01

    Background: Streptococcus constellatus and Streptococcus intermedius in subgingival dental plaque biofilms may contribute to forms of periodontitis that resist treatment with conventional mechanical root debridement/surgical procedures and may additionally participate in some extraoral infections.

  7. PYRUVATE FERMENTATION BY STREPTOCOCCUS FAECALIS.

    Science.gov (United States)

    DEIBEL, R H; NIVEN, C F

    1964-07-01

    Deibel, R. H. (American Meat Institute Foundation, Chicago, Ill.), and C. F. Niven, Jr. Pyruvate fermentation by Streptococcus faecalis. J. Bacteriol. 88:4-10. 1964.-Streptococcus faecalis, as opposed to S. faecium, utilizes pyruvate as an energy source for growth. The fermentation is adaptive, as demonstrated by growth experiments in a casein-hydrolysate medium and the fermentation of pyruvate by cell suspensions. The principal products of pyruvate catabolism were acetoin, CO(2), and lactic, acetic, and formic acids, although carbon recoveries were low due to the formation of slime. End-product analyses suggested that both the phosphoroclastic and dismutation systems were active in pyruvate breakdown. Studies with cell-free extracts indicated a thiamine diphosphate requirement for active pyruvate catabolism. The involvement of lipoic acid in the phosphoroclastic system was investigated, and, although inconclusive results were obtained, no association of this cofactor with phosphoroclastic activity could be made.

  8. First Isolation of Streptococcus halichoeri and Streptococcus phocae from a Steller Sea Lion (Eumetopias jubatus) in South Korea.

    Science.gov (United States)

    Lee, Kichan; Kim, Ji-Yeon; Jung, Suk Chan; Lee, Hee-Soo; Her, Moon; Chae, Chanhee

    2016-01-01

    Streptococcus species are emerging potential pathogens in marine mammals. We report the isolation and identification of Streptococcus halichoeri and Streptococcus phocae in a Steller sea lion (Eumetopias jubatus) in South Korea.

  9. Desenvolvimento de vacina recombinante de proteína M de Streptococcus equi subsp. equi

    OpenAIRE

    MACIEL, Liana Flores

    2012-01-01

    A equinocultura no Brasil ganha espaço em setores ligados ao lazer, cultura e turismo, sendo responsável por milhões de empregos. A Adenite Equina causada pelo Streptococcus equi subsp. equi é uma doença do aparelho respiratório de elevado impacto econômico, gerando gastos com mão-de-obra e perda de desempenho dos animais. Para amenizar este problema, medidas profiláticas são importantes, como por exemplo, a vacinação. Porém, as vacinas disponíveis no mercado protegem apenas 50% dos animai...

  10. Pelos caminhos da Museologia em Portugal

    Directory of Open Access Journals (Sweden)

    Manuel de Azevedo Antunes

    2015-10-01

    Full Text Available A humanidade começou com a recoleção. Os mitos, as estórias e a história para lá remetem. Da recoleção à coleção passaram milénios. E milénios passaram também até à “Casa das Musas”. Tanto a ocidente como a oriente. Como milénios (já menos passaram até aos “Gabinetes de Curiosidades” ou às “Câmaras de Maravilhas”, para se chegar aos Museus oficiais, abertos ao público, só no século XIX, no Brasil antes que em Portugal. Isto serve de pretexto para introduzir os “Caminhos da Museologia em Portugal”, das suas origens aos nossos dias. Onde se mostra que Portugal não se manteve indiferente aos ventos museológicos, sob a influência do iluminismo e do enciclopedismo, no séc. XVIII; passando, depois, pelo liberalismo do séc. XIX, até finais da monarquia; entrando pela I República e ditadura do Estado Novo, até depois do 25 de Abril de 1974, onde se dá uma rotura museológica, com a proliferação de novos museus, por todo o país, sob os auspícios da Nova Museologia.

  11. Resultados de la cirugía torácica mínimamente invasiva (vídeo-asistida) en el tratamiento de la Miastenia Gravis

    OpenAIRE

    Jans B,Jaime; González L,Roberto

    2013-01-01

    Introducción: La Miastenia Gravis (MG) es el desorden primario más común de la transmisión neuro-muscular. Su tratamiento es multidisciplinario, médico y quirúrgico. La timectomía es en la actualidad parte del estándar de tratamiento con mejorías clínicas en aproximadamente el 85% de los casos. El mejor abordaje aún no se ha definido. Objetivo: Evaluar los resultados de la timectomía por cirugía mínimamente invasiva (video-asistida) en pacientes con MG, con o sin timoma, analizando los result...

  12. Monitorización hemodinámica mínimamente invasiva en el paciente crítico. Una revisión de la literatura

    Directory of Open Access Journals (Sweden)

    María Fernanda Domínguez Freire

    2018-01-01

    Full Text Available El desarrollo de la optimización hemodinámica y de sus objetivos terapéuticos se encuentra relacionado con los avances tecnológicos de la monitorización hemodinámica. Mediante el desarrollo de la tecnología han aparecido nuevas técnicas con niveles bajos de invasión para la monitorización cardiovascular. Este trabajo se orienta a presentar una síntesis, fruto de la revisión bibliográfica, de aspectos importantes sobre la monitorización hemodinámica mínimamente invasiva en el paciente crítico.

  13. Resección de fibroelastoma papilar mitral mediante cirugía mínimamente invasiva en paciente con accidente cerebrovascular

    OpenAIRE

    Velásquez, Oscar; Gómez, Francisco; Alzate, Fernando; Fortich, Fernando; Mejía, Alfonso

    2013-01-01

    Paciente quien consultó con síntomas neurológicos y se realizó diagnóstico de accidente cerebrovascular embólico cuya etiología consistió en un tumor cardíaco de la válvula mitral (fibroelastoma) con confirmación histológica. Fue intervenido quirúrgicamente mediante técnica mínimamente invasiva a través del tórax, con excelente evolución, sininfección ni requerimientos sanguíneos; no presentó secuelas valvulares ni neurológicas. Se reportó reincorporación temprana a la vida laboral....

  14. TÉCNICAS NÃO INVASIVAS PARA REDUÇÃO DA LIPODISTROFIA LOCALIZADA: EVIDÊNCIAS ATUAIS. ÊNFASE NO TRATAMENTO COM CRIOLIPÓLISE.

    Directory of Open Access Journals (Sweden)

    Valdinara de Oliveira Crippa

    2016-12-01

    Full Text Available A busca pela satisfação da beleza estética e bem estar físico é uma preocupação presente na sociedade, e isso tem contribuído para o aumento crescente do número de clientes que procuram os tratamentos estéticos para minimizar as imperfeições corporais. A lipodistrofia localizada tem sido um dos maiores motivos dessa procura, e a solução dessa patologia tem sido cada vez mais a preferência por métodos que não limitem a rotina diária. Massagem modeladora, ultrassom, radiofrequência, vacuoterapia, eletrolipoforese e criolipólise são algumas das principais técnicas não invasivas disponíveis no mercado estético para o tratamento da lipodistrofia localizada, sendo a mais recente, a criolipólise, com um número cada vez maior de adeptos devido resultado altamente eficiente com menor número de sessões. Diante disso, o presente trabalho teve por objetivo abordar o conceito e as principais características da lipodistrofia localizada e apresentar esses principais tratamentos não invasivos para a disfunção. Para isso foi realizada uma pesquisa bibliográfica, apontando as evidências científicas da utilização desses recursos. Os resultados encontrados foram significativos e satisfatórios, apontando a eficácia desses tratamentos. Concluiu-se então que as técnicas não invasivas apresentadas são eficazes na redução de medidas corporais e no tratamento da lipodistrofia localizada, quando aplicadas corretamente a partir de protocolos cientificamente comprovados.

  15. Haemophilus influenzae : Caracterización de aislamientos recuperados de enfermedades invasivas en Cuba durante el período 2008-2011

    Directory of Open Access Journals (Sweden)

    Gilda Toraño

    2012-12-01

    Full Text Available Con el objetivo de caracterizar los aislamientos de Haemophilus influenzae, responsables de enfermedades invasivas en Cuba, en la etapa posterior a la vacunación se estudió el total de los recuperados durante el período 2008-2011, remitidos al Instituto "Pedro Kourí" desde diferentes provincias del país. La confirmación de especie y determinación de serotipos se realizó atendiendo al requerimiento de los factores V y X y empleando el método de aglutinación en lámina, respectivamente. Se definieron los biotipos a través de las pruebas de indol, urea y ornitina; se determinó la concentración mínima inhibitoria (CMI mediante la prueba del elipsómetro para la ampicilina, la ceftriaxona, el cloranfenicol y la rifampicina. Para 23 aislamientos se corroboró la identificación como H. influenzae : 21 fueron serotipables y 2 no tipables (HNT. El 90,4% de los serotipables fueron serotipo b y se detectaron dos serotipos a. Nueve aislamientos de H. influenzae b pertenecieron al biotipo I y los aislamientos, serotipo a y HNT, al biotipo II. En una cepa se demostró producción de la enzima ß-lactamasa y resistencia para la ampicilina y el cloranfenicol, con valores de CMI= 8 y 12 µg/mL, respectivamente. Se puso en evidencia que a pesar de la disminución de la incidencia de la enfermedad invasiva por Hib, este serotipo aún constituye el más frecuente y se alerta sobre la necesidad de una vigilancia sostenida que permita detectar fallos vacunales. La susceptibilidad antimicrobiana demostrada para este período pudiera considerarse como un beneficio adicional de la introducción de la vacunación en Cuba.

  16. Streptococcus tangierensis sp. nov. and Streptococcus cameli sp. nov., two novel Streptococcus species isolated from raw camel milk in Morocco.

    Science.gov (United States)

    Kadri, Zaina; Vandamme, Peter; Ouadghiri, Mouna; Cnockaert, Margo; Aerts, Maarten; Elfahime, El Mostafa; Farricha, Omar El; Swings, Jean; Amar, Mohamed

    2015-02-01

    Biochemical and molecular genetic studies were performed on two unidentified Gram-stain positive, catalase and oxidase negative, non-hemolytic Streptococcus-like organisms recovered from raw camel milk in Morocco. Phenotypic characterization and comparative 16S rRNA gene sequencing demonstrated that the two strains were highly different from each other and that they did not correspond to any recognized species of the genus Streptococcus. Phylogenetic analysis based on 16S rRNA gene sequences showed the unidentified organisms each formed a hitherto unknown sub-line within the genus Streptococcus, displaying a close affinity with Streptococcus moroccensis, Streptococcus minor and Streptococcus ovis. DNA G+C content determination, MALDI-TOF mass spectrometry and biochemical tests demonstrated the bacterial isolates represent two novel species. Based on the phenotypic distinctiveness of the new bacteria and molecular genetic evidence, it is proposed to classify the two strains as Streptococcus tangierensis sp. nov., with CCMM B832(T) (=LMG 27683(T)) as the type strain, and Streptococcus cameli sp. nov., with CCMM B834(T) (=LMG 27685(T)) as the type strain.

  17. Acanthamoeba castellanii interactions with Streptococcus pneumoniae and Streptococcus pyogenes.

    Science.gov (United States)

    Siddiqui, Ruqaiyyah; Yee Ong, Timothy Yu; Jung, Suk Yul; Khan, Naveed Ahmed

    2017-12-01

    Among the genus Streptococcus, S. pyogenes and S. pneumoniae are the major causes of pharyngitis, impetigo, pneumonia and meningitis in humans. Streptococcus spp. are facultative anaerobes that are nutritionally fastidious, yet survive in the environment and target the predisposed population. Antibacterial disinfectants have been partially effective only, indicating the need for novel preventative measures and to understand mechanisms of bacterial resistance. Acanthamoeba is a free-living protist that is known to harbour microbial pathogens, provide shelter, and assist in their transmission to susceptible population. The overall aim of this study was to determine whether S. pyogenes and S. pneumoniae can interact with A. castellanii by associating, invading, and surviving inside trophozoites and cysts. It was observed that both S. pyogenes and S. pneumoniae were able to associate as well as invade and/or taken up by the phagocytic A. castellanii trophozoite. Notably, S. pyogenes and S. pneumoniae survived the encystation process, avoided phagocytosis, multiplied, and exhibited higher recovery from the mature cysts, compared with the trophozoite stage (approximately 2 bacteria per amoebae ratio for cyst stage versus 0.02 bacteria per amoeba ration for trophozoite stage). As Acanthamoeba cysts are resilient and can disperse through the air, A. castellanii can act as a vector in providing shelter, facilitating growth and possibly genetic exchanges. In addition, these interactions may contribute to S. pyogenes and S. pneumoniae survival in harsh environments, and transmission to susceptible population and possibly affecting their virulence. Future studies will determine the molecular mechanisms associated with Acanthamoeba interactions with Streptococcus and the evolution of pathogenic bacteria and in turn expedite the discovery of novel therapeutic and/or preventative measures. Copyright © 2017 Elsevier Inc. All rights reserved.

  18. PENICILLIN–RESISTANT STREPTOCOCCUS PNEUMONIAE – A ...

    African Journals Online (AJOL)

    Since the first report in 1967, the incidence of Penicillin Resistant Streptococcus pneumoniae (Pneumococcus) has risen steadily worldwide, and now complicates diagnostic and treatment strategies for infections due to this organism. More worrisome is the fact that in areas where Penicillin Resistant Streptococcus ...

  19. Streptococcus suis meningitis, a poacher's risk

    NARCIS (Netherlands)

    Halaby, T.; Hoitsma, E.; Hupperts, R.; Spanjaard, L.; Luirink, M.; Jacobs, J.

    2000-01-01

    Streptococcus suis infection is a zoonosis that has been mainly reported in pig-rearing and pork-consuming countries. The most common disease manifestation is meningitis, often associated with cochleovestibular signs. The causative agent is Streptococcus suis serotype 2, found as a commensal in the

  20. Streptococcus pyogenes toxic-shock syndrome

    OpenAIRE

    Antunes, R; Diogo, M; Carvalho, A; Pimentel, T; Oliveira, J

    2011-01-01

    Recently there has been an exponential increase in invasive infections caused by Streptococcus ß hemolyticcus group A. In about one third of cases they are complicated by toxic shock syndrome, characterized by septic shock and multiorgan failure. The authors, by their rarity, report a case of bacteraemia caused by Streptococcus pyogenes complicated by toxic shock syndrome.

  1. Seeing Streptococcus pneumoniae, a Common Killer Bacteria

    DEFF Research Database (Denmark)

    Kjærgaard, Rikke Schmidt; Andersen, Ebbe Sloth

    2014-01-01

    of the bacteria Streptococcus pneumoniae by use of ink, watercolours and computer graphics. We propose a novel artistic visual rendering of Streptococcus pneumoniae and ask what the value of these kind of representations are compared to traditional scientific data. We ask if drawings and computer...

  2. Epidemiological Significance of the Colonization of Streptococcus ...

    African Journals Online (AJOL)

    Knowledge of Group B Streptococcus (GBS) carriage and infections in Africa is very scanty but few cases have been reported in Nigeria in particular. Streptococcus agalactiae has been reported to cause infections and diseases in non-parturients and adults ranging from bacteremia, osteomylitis, arthritis, and endocarditis to ...

  3. Streptococcus milleri in the appendix.

    Science.gov (United States)

    Poole, P M; Wilson, G

    1977-10-01

    The appendix was investigated as a possible habitat of Streptococcus milleri. Both normal and inflamed appendices were examined and the isolation rates compared. S. milleri was present in a quarter of the normal appendices and more than half of those associated with apendicitis--a difference that was statistically highly significant. The isolation rates throughout were indepencent of age. There was a pronounced connection between the presence of S. milleri in the appendix and the purulent manifestations of appendicitis. S. milleri was isolated from other abdominal sites associated with appendicitis. The frequency of isolation was increased by culture in an enrichment broth containing nalidixic acid and sulphadimidine.

  4. Galactose transport in Streptococcus thermophilus.

    OpenAIRE

    Hutkins, R; Morris, H A; McKay, L L

    1985-01-01

    Although Streptococcus thermophilus accumulated [14C]lactose in the absence of an endogenous energy source, galactose-fermenting (Gal+) cells were unable to accumulate [14C]galactose unless an additional energy source was added to the test system. Both Gal+ and galactose-nonfermenting (Gal-) strains transported galactose when preincubated with sucrose. Accumulation was inhibited 50 or 95% when 10 mM sodium fluoride or 1.0 mM iodoacetic acid, respectively, was added to sucrose-treated cells, i...

  5. Revascularização do miocárdio com cirurgia minimamente invasiva (MIDCAB: resultados em 46 pacientes

    Directory of Open Access Journals (Sweden)

    Domingo M. Braile

    1998-07-01

    Full Text Available Objetivo: Apresentar a experiência com a realização de revascularização do miocárdio com técnica minimamente invasiva, via minitoratocotomia anterior esquerda sem circulação extracorpórea (MIDCAB. Casuística e Métodos: 46 pacientes foram submetidos a MIDCAB de fevereiro de 1997 a janeiro de 1998. Todos eram portadores de doença obstrutiva na porção proximal do ramo interventricular anterior (RIA. A técnica consistiu em pequena incisão, de cerca de 8,0 cm, transversal, na região inframamária esquerda, obtendo-se fácil acesso para dissecção da artéria torácica interna (ATI e posterior anastomose com o RIA. A avaliação dos resultados foi feita com controle clínico, laboratorial e angiográfico. Resultados: O tempo médio de operação foi de 2 horas, com cerca de 18 horas de internação na UTI e permanência hospitalar máxima de 5 dias. Não ocorreram óbitos intra-operatórios. Houve 1 caso de morte súbita após alta (15º PO. Os pacientes acompanhados ambulatorialmente não referiram dor anginosa. Documentou-se 4 casos de oclusão da ATI e 2 estenoses do RIA pós anastomose, provavelmente decorrentes da bandagem desse vaso durante o procedimento. Não houve correlação entre níveis de troponina-I e oclusão do enxerto. Verificou-se, porém, que os níveis de troponina I dos pacientes submetidos à MIDCAB foram significativamente menores que no procedimento convencional. Não ocorreram complicações clínicas de significância. Conclusão: A MIDCAB demonstrou ser procedimento útil e de baixa morbidade e mortalidade, com possibilidade de menor permanência hospitalar e conseqüente menor custo. Os baixos níveis sangüíneos de troponina I indicam menor sofrimento miocárdico com o procedimento.Objective: To present the experience with myocardial revascularization by Minimally Invasive Direct Coronary Artery Bypass Graft via left anterior minithoracotomy without extracorporeal circulation (MIDCAB. Material and

  6. Tratamento da leishmaniose tegumentar americana pelo niridazol

    Directory of Open Access Journals (Sweden)

    Miroslau Constante Baranski

    1970-08-01

    Full Text Available Foi empregue o niridazol um derivado do nitrotiazol, em doze pacientes com leishmaniose tegumentar americana. Em todos êles, o diagnóstico clínico da doença foi confirmado pela biópsia das lesões e em oito dêles também pela positividade da intradetermorreação de Montenegro. Oito pacientes tinham lesões mucosas metastáticas em atividade e lesões cutâneas iniciais cicatrizadas há tempo mais ou menos longo. Dois apresentavam concomitância de lesões cutâneas e mucosas em atividade, e dois tinham lesões cutâneas exclusivas. A duração da doença variou de 2 meses a 32 anos. A posologia diária do niridazol foi uniformememente de 25 mg/kg de pêso corpóreo. O medicamento foi administrado por via oral, em duas tomadas diárias, sempre com o doente internado em hospital. Quando a tolerância o permitia, o paciente recebia cinco séries de tratamento de 10 dias de duração cada, intercaladas por períodos áe suspensão da droga de 10 dias entre uma série e outra. Isso foi possível em 10 dos 12 pacientes. O tratamento foi bem tolerado em 5 doentes e de tolerância regular em 4. Mal tolerado em um paciente pela ocorrência de alucinações e excitação mental e interrompido pela péssima tolerância em dois doentes devido ao aparecimento de convulsões generalizadas com perda da consciência. O tratamento acompanhou-se de grande incidência, de efeitos colaterais. A ocorrência de para-efeitos mais intensos não foi devida às más condições hepáticas. Provas de função hepática. hemogramas, estudos bioquímicos do sangue e exames de urina, realizados antes, durante e após o tratamento, não revelaram alterações significativas. Biópsias hepáticas por punção com agulha em dez doentes, prévias e posteriores ao tratamento, não detectaram lesões hepáticas que pudessem ser atribuídas à medicação. O seguimento dos doentes prolongou-se pelo prazo de dois a 36 meses apos o tratamento. Alterações eletrocardiogr

  7. Invasive Aspergillus flavus sinusitis: case report in a patient with biphenotypic acute leukemia Sinusite invasiva por Aspergillus flavus: relato de um caso associado a leucemia aguda bifenotípica

    Directory of Open Access Journals (Sweden)

    Melissa Orzechowski Xavier

    2009-02-01

    Full Text Available Here we report a case of invasive pansinusitis with proptosis of the right eye caused by Aspergillus flavus in an immunocompromised patient with acute biphenotypic leukemia without aggressive therapy response.Descreve-se um caso de pansinusite invasiva com proptose do globo ocular direito causado por Aspergillus flavus em um paciente imunossuprimido com leucemia aguda bifenotípica sem resposta a terapia agressiva.

  8. Intervenção no abuso sexual intrafamiliar: ingerência invasiva ou proteção devida?

    Directory of Open Access Journals (Sweden)

    Santos, Viviane Amaral dos

    2009-01-01

    Full Text Available Este texto se propõe a discutir os aspectos jurídicos e psicológicos presentes no abuso sexual intrafamiliar. Pensamos a proteção da criança ou do adolescente a partir da constatação de que o maior número de abusos sexuais é cometido no seio das famílias e com maior frequência pelos pais e padrastos. Colocamos algumas questões com o intuito de melhor compreender a interface entre Psicologia e Direito na ingerência deste problema, com vistas à possível proteção e restauração de direitos das vítimas. Ressaltamos as contradições presentes e concluímos que a intervenção judicial pode ser determinante para a interrupção da violação do direito a uma vida digna e ao desenvolvimento sexual saudável tanto de crianças como de adolescentes. Reconhecemos que, apesar de a violência sexual intrafamiliar ocorrer no contexto privado, ela tem caráter social e público por atentar contra os direitos humanos básicos, e requer uma intervenção legal para restabelecer e garantir esses direitos

  9. Streptococcus pneumoniae urinary tract infection in pedeatrics.

    Science.gov (United States)

    Pougnet, Richard; Sapin, Jeanne; De Parscau, Loïc; Pougnet, Laurence

    2017-06-01

    Streptococcus pneumoniae infections in children are most often lung infections or meningitis. Urinary tract infections are much rarer. We present the case of a urinary tract infection with Streptococcus pneumoniae. The clinical picture was classical. The urine culture showed the presence of Streptococcus pneumoniae in urine (10 4 UFC/mL; with 2 × 10 4 leucocytes/mL). The literature mentions a few cases of such infections. In some studies, the prevalence of Streptococcus pneumoniae in urine of children is less than 1%. Those children mostly present abnormalities of urinary tract. In our case, urinary ultrasound scan have shown the presence of an ectopic kidney in this child. The discussion between the clinician and the biologist has contributed to the discovery of this renal anomaly.

  10. Role of Streptococcus Anginosus on the formation of dental caries

    Directory of Open Access Journals (Sweden)

    Yetty Herdiyati Nonong

    2011-11-01

    Full Text Available Generally, the etiology of dental caries is the cariogenic properties of bacteria, these are always associated with Streptococcus mutans. Glucosyltransferase fragment (Gtf are also in other strains of Streptococcus such as Streptococcus anginosus, Streptococcus milleri which includes beta hemolysis. Genotypically B Streptococcus anginosus has genetic characteristics that are similar to Streptococcus mutans. The research objective was to determine the existence of Gtf B/C gene as a cause of caries in Streptococcus anginosus. The study was conducted in experimental laboratories with PCR technique by taking a sample of 20 children who had caries. The results showed there was the amplification of Streptococcus anginosus with a level of homology 96%, 97%, and 99%. The results of the Gtf genes amplification fragment B/C provided 600 pb ribbon. The conclusion was Streptococcus anginosus classified as cariogenic bacteria because they had Gtf B/C genes.

  11. Transformation and fusion of Streptococcus faecalis protoplasts.

    OpenAIRE

    Smith, M D

    1985-01-01

    Nonconjugative plasmids were transferred by protoplast fusion among Streptococcus faecalis strains and from Streptococcus sanguis to S. faecalis. S. faecalis protoplasts were also transformed with several different plasmids, including the Tn917 delivery vehicle pTV1. Transformation was reproducible, but low in frequency (10(-6) transformants per viable protoplast). A new shuttle vector (pAM610), able to replicate in Escherichia coli and S. faecalis, was constructed and transformed into S. fae...

  12. Aortitis with bacteraemia by Streptococcus equi Zooepidemicus

    International Nuclear Information System (INIS)

    Betancur, Carlos Alberto; Giraldo, Juan David; Saldarriaga Eugenia Lucia

    2005-01-01

    Infections by Streptococcus equi subspecies zooepidemicus occur in animals. In human beings these infections are generally accidental, and few cases have been reported. We present the case of a 56-year-old male, a butcher, who presented with abdominal pain. Aneurismatic dilatation of the aorta below the renal arteries was documented by CT-scanning. A purulent collection and arterial ulceration were found during surgery; Streptococcus equi zooepidemicus was isolated from the collection and from blood cultures

  13. Population diversity and dynamics of Streptococcus mitis, Streptococcus oralis, and Streptococcus infantis in the upper respiratory tracts of adults, determined by a nonculture strategy

    DEFF Research Database (Denmark)

    Bek-Thomsen, Malene; Tettelin, H; Hance, I

    2008-01-01

    We reinvestigated the clonal diversity and dynamics of Streptococcus mitis and two other abundant members of the commensal microbiota of the upper respiratory tract, Streptococcus oralis and Streptococcus infantis, to obtain information about the origin of frequently emerging clones in this habitat...

  14. The effect of mango and neem extract on four organisms causing dental caries: Streptococcus mutans, Streptococcus salivavius, Streptococcus mitis, and Streptococcus sanguis: an in vitro study.

    Science.gov (United States)

    Prashant, G M; Chandu, G N; Murulikrishna, K S; Shafiulla, M D

    2007-01-01

    Chewing twigs of the mango or neem tree is a common way of cleaning the teeth in the rural and semi-urban population. These twigs are also believed to possess medicinal properties. The present study was conducted to evaluate the antimicrobial effects of these chewing sticks on the microorganisms Streptococcus mutans , Streptococcus salivarius , Streptococcus mitis , and Streptococcus sanguis which are involved in the development of dental caries. An additional objective was to identify an inexpensive, simple, and effective method of preventing and controlling dental caries. The sticks were sun dried, ground into a coarse powder, and weighed into 5 gm, 10 gm, and 50 gm amounts. These were added to 100 ml of deionized distilled water. After soaking for 48 h at 4 degrees C, the water was filtered. The filtrate was inoculated onto blood agar plates containing individual species of microorganisms and incubated at 37 degrees C for 48 h. Mango extract, at 50% concentration, showed maximum zone of inhibition on Streptococcus mitis . Neem extract produced the maximum zone of inhibition on Streptococcus mutans at 50% concentration. Even at 5% concentration neem extract showed some inhibition of growth for all the four species of organisms. A combination of neem and mango chewing sticks may provide the maximum benefit. We recommend the use of both the chewing sticks.

  15. The effect of mango and neem extract on four organisms causing dental caries: Streptococcus mutans, Streptococcus salivavius, Streptococcus mitis, and Streptococcus sanguis: An in vitro study

    Directory of Open Access Journals (Sweden)

    Prashant G

    2007-01-01

    Full Text Available Background and Objectives: Chewing twigs of the mango or neem tree is a common way of cleaning the teeth in the rural and semi-urban population. These twigs are also believed to possess medicinal properties. The present study was conducted to evaluate the antimicrobial effects of these chewing sticks on the microorganisms Streptococcus mutans , Streptococcus salivarius , Streptococcus mitis , and Streptococcus sanguis which are involved in the development of dental caries. An additional objective was to identify an inexpensive, simple, and effective method of preventing and controlling dental caries. Materials and Methods: The sticks were sun dried, ground into a coarse powder, and weighed into 5 gm, 10 gm, and 50 gm amounts. These were added to 100 ml of deionized distilled water. After soaking for 48 h at 4°C, the water was filtered. The filtrate was inoculated onto blood agar plates containing individual species of microorganisms and incubated at 37°C for 48 h. Results: Mango extract, at 50% concentration, showed maximum zone of inhibition on Streptococcus mitis . Neem extract produced the maximum zone of inhibition on Streptococcus mutans at 50% concentration. Even at 5% concentration neem extract showed some inhibition of growth for all the four species of organisms. Interpretation and Conclusion: A combination of neem and mango chewing sticks may provide the maximum benefit. We recommend the use of both the chewing sticks.

  16. A reação em cadeia da polimerase na detecção da resistência à penicilina em Streptococcus pneumoniae Polymerase chain reaction used to detect Streptococcus pneumoniae resistance to penicillin

    Directory of Open Access Journals (Sweden)

    Eduardo Walker Zettler

    2004-12-01

    Full Text Available INTRODUÇÃO: O Streptococcus pneumoniae é o mais freqüente agente etiológico de infecções respiratórias adquiridas na comunidade e sua resistência aos antimicrobianos tem aumentado nos últimos anos. A determinação da resistência é feita rotineiramente por método lento que depende do crescimento em cultura e determinação da concentração inibitória mínima (CIM. A reação em cadeia da polimerase (PCR detecta os genes responsáveis pela resistência do Streptococcus pneumoniae a penicilina em cerca de 8 horas. OBJETIVO: Comparar a PCR com o método da CIM no diagnóstico da resistência da Streptococcus pneumoniae a penicilina. MÉTODO: Foram estudadas 153 amostras de Streptococcus pneumoniae, isoladas de diferentes sítios anatômicos, usando-se para detecção de mutações nos genes que codificam as proteínas ligadoras de penicilina 1a, 2b e 2x, responsáveis pela resistência à penicilina. A ocorrência das mutações foi correlacionada com a CIM de penicilina, determinada pelo teste de difusão em ágar. RESULTADOS: A resistência global à penicilina do Streptococcus pneumoniae foi de 22,8% (16,3% de resistência intermediária e 6,5% de resistência alta. Em proporções estatisticamente significativas, as amostras sensíveis à penicilina não tinham mutações, as intermediárias apenas uma, geralmente na proteína ligadora de penicilina 2x, e as altamente resistentes tinham mutações nas três proteínas investigadas. CONCLUSÃO: A PCR é um método rápido para a detecção da resistência à penicilina do Streptococcus pneumoniae, que poderá vir a ser utilizado na prática clínica.BACKGROUND: Streptococcus pneumoniae is the most common etiologic agent of community-acquired respiratory infections. In recent years, S. pneumoniae resistance to antimicrobial agents has increased. Minimum inhibitory concentration (MIC is routinely used to determine resistance. Polymerase chain reaction (PCR detects the genes

  17. Penetration of Streptococcus sobrinus and Streptococcus sanguinis into dental enamel.

    Science.gov (United States)

    Kneist, Susanne; Nietzsche, Sandor; Küpper, Harald; Raser, Gerhard; Willershausen, Brita; Callaway, Angelika

    2015-10-01

    The aim of this pilot study was to assess the difference in virulence of acidogenic and aciduric oral streptococci in an in vitro caries model using their penetration depths into dental enamel. 30 caries-free extracted molars from 11- to 16-year-olds were cleaned ultrasonically for 1 min with de-ionized water and, after air-drying, embedded in epoxy resin. After 8-h of setting at room temperature, the specimens were ground on the buccal side with SiC-paper 1200 (particle size 13-16 μm). Enamel was removed in circular areas sized 3 mm in diameter; the mean depth of removed enamel was 230 ± 60 μm. 15 specimens each were incubated anaerobically under standardized conditions with 24 h-cultures of Streptococcus sanguinis 9S or Streptococcus sobrinus OMZ 176 in Balmelli broth at 37 ± 2 °C; the pH-values of the broths were measured at the beginning and end of each incubation cycle. After 2, 4, 6, 8, and 10 weeks 3 teeth each were fixed in 2.5% glutaraldehyde in cacodylate buffer for 24 h, washed 3× and dehydrated 30-60min by sequential washes through a series of 30-100% graded ethanol. The teeth were cut in half longitudinally; afterward, two slits were made to obtain fracture surfaces in the infected area. After critical-point-drying the fragments were gold-sputtered and viewed in a scanning electron microscope at magnifications of ×20-20,000. After 10 weeks of incubation, penetration of S. sanguinis of 11.13 ± 24.04 μm below the break edges into the enamel was observed. The invasion of S. sobrinus reached depths of 87.53 ± 76.34 μm. The difference was statistically significant (paired t test: p = 0.033). The experimental penetration depths emphasize the importance of S. sanguinis versus S. sobrinus in the context of the extended ecological plaque hypothesis. Copyright © 2015 Elsevier Ltd. All rights reserved.

  18. Functional variation of the antigen I/II surface protein in Streptococcus mutans and Streptococcus intermedius

    NARCIS (Netherlands)

    Petersen, FC; Assev, S; van der Mei, HC; Busscher, HJ; Scheie, AA

    Although Streptococcus intermedius and Streptococcus mutans are regarded as members of the commensal microflora of the body, S. intermedius is often associated with deep-seated purulent infections, whereas S. mutans is frequently associated with dental caries. In this study, we investigated the

  19. Relation of Growth of Streptococcus lactis and Streptococcus cremoris to Amino Acid Transport

    NARCIS (Netherlands)

    Poolman, Bert; Konings, Wil N.

    The maximum specific growth rate of Streptococcus lactis and Streptococcus cremoris on synthetic medium containing glutamate but no glutamine decreases rapidly above pH 7. Growth of these organisms is extended to pH values in excess of 8 in the presence of glutamine. These results can be explained

  20. Isolation of Streptococcus tigurinus - a novel member of Streptococcus mitis group from a case of periodontitis.

    Science.gov (United States)

    Dhotre, Shree V; Mehetre, Gajanan T; Dharne, Mahesh S; Suryawanshi, Namdev M; Nagoba, Basavraj S

    2014-08-01

    Streptococcus tigurinus is a new member of the Streptococcus viridians group and is closely related to Streptococcus mitis, Streptococcus pneumoniae, Streptococcus pseudopneumoniae, Streptococcus oralis, and Streptococcus infantis. The type strain AZ_3a(T) of S. tigurinus was originally isolated from a patient with infective endocarditis. Accurate identification of S. tigurinus is facilitated only by newer molecular methods like 16S rRNA gene analysis. During the course of study on bacteraemia and infective endocarditis with reference to periodontitis and viridians group of streptococci, a strain of S. tigurinus isolated from subgingival plaque of a patient with periodontitis identified by 16S rRNA gene analysis, which was originally identified as Streptococcus pluranimalium by Vitek 2. Confirmation by 16S rRNA gene analysis showed 99.39% similarity (1476/1485 bp) with S. tigurinus AZ_3a(T) (AORU01000002). To the best of our knowledge, this is the first report of isolation of S. tigurinus from the oral cavity of a periodontitis patient. © 2014 Federation of European Microbiological Societies. Published by John Wiley & Sons Ltd. All rights reserved.

  1. Isolamento e sensibilidade a quimioterápicos de streptococcus spp envolvidos na mastite clínica e subclínica de bovinos da microrregião de Araguaína, Tocantins

    OpenAIRE

    Alexandrino, Bruna; Rodrigues Correia, Crispim Anderson; Coelho Miranda Brito, Letícia; Minharro, Silvia

    2015-01-01

    A mastite bovina é a principal doença do gado leiteiro devido a sua prevalência acarretando grande impacto econômico mundial. Sua etiologia é complexa, sendo o principal agente o Staphylococcus aureus, seguido pelo Streptococcus spp. O presente trabalho tem por objetivo isolar os microrganismos pertencentes ao gênero Streptococcus, presentes no leite de vaca da microrregião de Araguaína, Tocantins, e testar a sensibilidade destes aos diversos quimioterápicos disponíveis no mercado. Foram util...

  2. Determination of 16S rRNA sequences of Streptococcus mitis and Streptococcus gordonii and phylogenetic relationships among members of the genus Streptococcus.

    Science.gov (United States)

    Kawamura, Y; Hou, X G; Sultana, F; Miura, H; Ezaki, T

    1995-04-01

    We determined the 16S rRNA sequences of the type strains of Streptococcus mitis and Streptococcus gordonii and calculated the phylogenetic distances between those organisms and other members of the genus Streptococcus. The viridans group streptococci were separated into five phylogenetic groups; we named these groups the anginosus group, the mitis group, the salivarius group, the bovis group, and the mutans group. S. mitis and S. gordonii clustered in the mitis group together with Streptococcus pneumoniae, Streptococcus oralis, Streptococcus sanguis, and Streptococcus parasanguis at levels of sequence homology of more than 96%. Within this group, S. mitis, S. oralis, and S. pneumoniae exhibited more than 99% sequence homology with each other, although the DNA-DNA similarity values for their total chromosome DNAs were less than 60%.

  3. Human milk oligosaccharides inhibit growth of group B Streptococcus

    NARCIS (Netherlands)

    Lin, Ann E; Autran, Chloe A; Szyszka, Alexandra; Escajadillo, Tamara; Huang, Mia; Godula, Kamil; Prudden, Anthony R; Boons, Geert-Jan|info:eu-repo/dai/nl/088245489; Lewis, Amanda L; Doran, Kelly S; Nizet, Victor; Bode, Lars

    2017-01-01

    Streptococcus agalactiae (group B Streptococcus, GBS) is a leading cause of invasive bacterial infections in newborns, typically acquired vertically during childbirth secondary to maternal vaginal colonization. Human milk oligosaccharides (HMOs) have important nutritional and biological activities

  4. Tratamento da himenolepíase pelo Thelmesan

    Directory of Open Access Journals (Sweden)

    Adelina de S. Velho Soli

    1967-12-01

    Full Text Available Os autores descrevem, os resultados com o emprego de um nôvo medicamento, o THELMESAN, na himenolepíase. Entre 48 casos estudados, 82% tiveram erradicação do parasitismo; a tolerância foi boa, enquanto outras parasitoses associadas não foram influenciadas pelo produto.

  5. Chemoprophylaxis against Group A Streptococcus during Military Training

    Science.gov (United States)

    2018-12-14

    chemoprophylaxis policy, the highlights of which are presented in this paper. 28 29 Group A Streptococcus 30 Streptococcus pyogenes (or GAS) is a Gram-positive...236 6, 2017. 237 20. Gray GC, Escamilla J, Hyams KC, Struewing JP, Kaplan EL, Tupponce AK. Hyperendemic 238 Streptococcus pyogenes infection...Pharyngeal colonization prevalence rates 261 for Streptococcus pyogenes and Steptococcus pneumoniae in a respiratory chemoprophylaxis 262 intervention

  6. Antimicrobial resistance and serotyping of Streptococcus pneumoniae isolated from pediatric patients in Belo Horizonte, MG, Brazil Resistência antimicrobiana e sorotipagem de Streptococcus pneumoniae isolado de pacientes pediátricos em Belo Horizonte, MG

    Directory of Open Access Journals (Sweden)

    Ana Paula Gomes de Oliveira Magalhães

    2003-07-01

    Full Text Available Thirty one Streptococcus pneumoniae invasive strains were isolated from a pediatric population in Belo Horizonte from June, 1999 to May, 2001. Penicillin, trimethoprim-sulfamethoxazole, tetracycline and chloramphenicol resistance rates for the isolates were 41.9, 58.1, 25.8 and 3.2%, respectively. Intermediate penicillin resistant (MICs between 0.1 and 1.0 µg/ml and resistant (MICs > 2.0 µg/ml isolates occured at rates of 38.7 and 3.2%, respectively. Resistance to erythromycin, ofloxacin, rifampin or vancomicyn was not detected. Ten S. pneumoniae serotypes (14, 5, 10 A, 6B, 15B, 18C, 6 A, 18 A, 19 A and 19 F were identified. Serotype 14 (12 out of 31 was predominant among the isolates. Penicillin and trimethoprim-sulfamethoxazole resistance was more common in 14 and 6B serotypes.Trinta e três linhagens invasivas do S. pneumoniae foram isoladas a partir de pacientes pediátricos em Belo Horizonte, MG, Brasil, de junho de 1999 a maio de 2001. As taxas de resistência à penicilina, ao trimetoprim-sultametoxazol, tetraciclina e cloranfenicol foram respectivamente, 41, 9; 58,1 e 3,2%. A resistência intermediária à penicilina (MICs entre 0,1 e 1,0 µg/ml e resistência total (MICs>2.0 µg/ml ocorreram, respectivamente, nas porcentagens de 38,7 e 3,2%. Não foi detectada resistência à eritromicina, ofloxacin, rifampina e vancomicina. Foram identificados 9 sorotipos do S. pneumoniae (14, 5, 10 , 6B, 15B, 18C, 6 A, 18 19 A e 19F entre os isolados. O sorotipo 14 (12 de 31 foi predominate entre os isolados. A resistência à penicilina e ao trimetoprim-sulfametoxazol estava sempre associada aos sorotipos 14 e 6B.

  7. The efficacy of neem extract on four microorganisms responsible for causing dental caries viz Streptococcus mutans, Streptococcus salivarius, Streptococcus mitis and Streptococcus sanguis: an in vitro study.

    Science.gov (United States)

    Chava, Venkateswara Rao; Manjunath, S M; Rajanikanth, A V; Sridevi, N

    2012-11-01

    HISTORY AND OBJECTIVES: From the ancient time, neem used to be the traditional medicine for many diseases and was mainly used for cleaning the oral cavity. The incidence of dental caries was less a few decades ago but now the incidence of caries is very aggressive. This might be due to change in dietary habits, life style and more tendency toward processed food. The objective of this study is to find out the truth that if the neem is really efficacious against caries-inducing microorganisms, mainly Streptococcus mutans, Streptococcus salivarius, Streptococcus mitis and Streptococcus sanguis. The dried neem sticks ground into a coarse powder and weighed into 5, 10 and 50 gm were added to 100 ml of deionized double distilled water. After soaking for 2 days, the water was filtered at 4 °C and the fine filtrate was inoculated onto blood agar plates contains individual species of microorganisms and incubated at 37 °C for 2 days. At maximum concentrations, neem extract has shown the maximum zone of inhibition on Streptococcus mutans. At less concentration, the efficacy of neem has shown some inhibition of growth for all the four species of microorganisms. Neem chewing provides the maximum benefits. Hence, the use of chewing sticks of neem can be recommended.

  8. Biotransformación del pelo residual de curtiembres

    Directory of Open Access Journals (Sweden)

    Ruth Viviana Numpaque

    2016-12-01

    Full Text Available La industria de curtiembres genera una alta carga contaminante representada por residuos líquidos, sólidos y gaseosos. Entre los residuos sólidos, el pelo residual es vertido directamente al río Bogotá y/o en rellenos sanitarios, desencadenando serios conflictos de orden ambiental, social y económico. El objetivo de esta investigación fue evaluar la capacidad de los microorganismos del EM y Agroplux en la transformación del pelo residual en compost. Se evaluaron tres tratamientos con pelo residual y materiales orgánicos de plaza en diferentes porcentajes y dos controles, utilizando el diseño completamente al azar, con tres repeticiones. Durante el compostaje se determinaron las variables temperatura, formación de agregados, pH y conductividad eléctrica. El desarrollo de la temperatura ocurrió en ciclos que concordaron con los volteos y re-inoculaciones. En el tercer ciclo el mayor incremento de temperatura fue obtenido en los tres tratamientos, cuando ya se había agotado la mayor parte de los residuos orgánicos. La formación de agregados indicó que el proceso se llevó a efecto principalmente en el tratamiento con 20% de pelo residual más 80% de residuos orgánicos. Además de su color oscuro y la ausencia de olor y fragmentos, el compost producido mediante dicho tratamiento mostró la conductividad eléctrica más baja y un pH casi neutro. Se concluye que los microorganismos del EM y Agroplux tienen capacidad para transformar el pelo residual en compost y por lo tanto representan una alternativa viable para la continuación del funcionamiento de la industria de curtiembres en Villapinzón (Cundinamarca y en otras regiones de Colombia.

  9. Correcção de escoliose lombar degenerativa por técnica minimamente invasiva Corrección de escoliosis lumbar degenerativa por técnica mínimamente invasiva Correction of degenerative lumbar scoliosis by minimally invasive technique

    Directory of Open Access Journals (Sweden)

    Pedro Santos Silva

    2012-12-01

    Full Text Available A terapêutica cirúrgica da escoliose degenerativa consiste habitualmente em instrumentações e fusões mais ou menos extensas e associa-se a morbilidade significativa. A evolução tecnológica tem aberto caminho a técnicas menos invasivas que permitem obter resultados sobreponíveis aos das técnicas tradicionais minimizando a agressão cirúrgica. Descreve-se o caso de uma paciente do sexo feminino, de 63 anos, submetida a descompressão lombar posterior, em Janeiro de 2009, por alterações degenerativas marcadas. Poucos meses após a cirurgia a paciente referiu aumento das lombalgias e ciatalgia direita. O estudo imagiológico demonstrou agravamento de escoliose degenerativa L2-L5 associada a extrusão discal L2-L3 direita calcificada, fractura bilateral dos pedículos de L3 e espondilolistese degenerativa grau 1 L5-S1. Foi submetida a reintervenção cirúrgica por técnica minimamente invasiva consistindo em TLIF's L2-L3, L3-L4, L4-L5 e L5-S1 e fixação transpedicular L2-S1 bilateral, com correcção da deformidade no plano sagital e coronal. O caso clínico apresentado ilustra o potencial das abordagens minimamente invasivas no tratamento cirúrgico de escolioses degenerativas, devendo ser uma opção sempre presente considerando os benefícios potenciais para o paciente.El tratamiento quirúrgico de la escoliosis degenerativa consiste habitualmente en instrumentaciones y fusiones más o menos extensas, asociadas a morbilidad significativa. La evolución tecnológica ha abierto el camino para técnicas menos invasivas que permiten obtener resultados comparables a los de las técnicas tradicionales, minimizando el trauma de la cirugía. Presentamos el caso de paciente de sexo femenino, de 63 años de edad, sometida a descompresión lumbar posterior en enero de 2009, debido a marcadas alteraciones degenerativas. Pocos meses después del procedimiento, la paciente refirió agravamiento de la lumbalgia y ciática derecha. El estudio de

  10. 21 CFR 866.3740 - Streptococcus spp. serological reagents.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Streptococcus spp. serological reagents. 866.3740... (CONTINUED) MEDICAL DEVICES IMMUNOLOGY AND MICROBIOLOGY DEVICES Serological Reagents § 866.3740 Streptococcus spp. serological reagents. (a) Identification. Streptococcus spp. serological reagents are devices...

  11. ATP-driven calcium transport in membrane vesicles of Streptococcus sanguis. [Streptococcus sanguis; Streptococcus faecalis; Escherichia coli

    Energy Technology Data Exchange (ETDEWEB)

    Houng, H.; Lynn, A.R.; Rosen, B.P.

    1986-11-01

    Calcium transport was investigated in membrane vesicles prepared from the oral bacterium Streptococcus sanguis. Procedures were devised for the preparation of membrane vesicles capable of accumulation /sup 45/Ca/sup 2 +/. Uptake was ATP dependent and did not require a proton motive force. Calcium transport in these vesicles was compared with /sup 45/Ca/sup 2 +/ accumulation in membrane vesicles from Streptococcus faecalis and Escherichia coli. The data support the existence of an ATP-driven calcium pump in S. sanguis similar to that in S. faecalis. This pump, which catalyzes uptake into membrane vesicles, would be responsible for extrusion of calcium from intact cells.

  12. Ventilação não-invasiva em crianças: uma revisão Noninvasive ventilation in children: a review

    Directory of Open Access Journals (Sweden)

    Lik Eng Loh

    2007-05-01

    Full Text Available OBJETIVO: Avaliar o uso de ventilação não-invasiva (VNI em crianças e sua aplicação na insuficiência respiratória aguda e crônica. FONTES DOS DADOS: Busca de artigos pertinentes no Pubmed, base de dados Cochrane e Ovid MEDLINE entre 1950 e 2007, através do emprego dos termos pediatria, ventilação não-invasiva e pressão positiva nas vias aéreas. SÍNTESE DOS DADOS: Há uma escassez de publicações acerca da VNI em pediatria. A maioria dos dados disponíveis diz respeito a relatos de caso ou pequenas séries de casos, com apenas alguns estudos randomizados pequenos. CONCLUSÃO: Embora o uso de VNI seja cada vez mais reconhecido em pediatria, atualmente não existem ainda orientações gerais para o seu uso. Nos casos crônicos, seu uso foi eficaz no tratamento de apnéia obstrutiva do sono e na insuficiência respiratória secundária a afecções neuromusculares. Parece que o maior desafio é garantir a adesão ao tratamento e isso pode ser obtido através da instrução do paciente/cuidador, utilização de uma interface adequada, umidificadores aquecidos e minimização dos efeitos colaterais da VNI. Nos casos de insuficiência respiratória aguda, os dados disponíveis parecem indicar que se pode inferir o sucesso do tratamento pela rapidez na resposta terapêutica. Os pacientes submetidos à VNI devem ser monitorados cuidadosamente e essa modalidade de ventilação deve ser reconsiderada caso não haja resposta após algumas horas do início do tratamento.OBJECTIVE: To assess the use of noninvasive ventilation (NIV in children and its application in the acute and chronic setting of pediatric respiratory failure. SOURCES: Search of pertinent articles within Pubmed, Cochrane and Ovid MEDLINE databases from 1950 to 2007, using the keywords "pediatrics", "noninvasive ventilation" and "positive airway pressure". SUMMARY OF THE FINDINGS: There is a paucity of published data on pediatric NIV. The majority of the data available are

  13. Toracotomia minimamente invasiva (miopreservadora para ligadura do canal arterial em prematuros Minimally invasive thoracotomy (muscle-sparing thoracotomy for occlusion of ductus arteriosus in preterm infants

    Directory of Open Access Journals (Sweden)

    Andrey José de Oliveira Monteiro

    2007-09-01

    Full Text Available OBJETIVO: Avaliar a aplicabilidade, segurança e resultados iniciais da toracotomia minimamente invasiva para ligadura do canal arterial em prematuros. MÉTODO: Entre outubro de 1991 e julho de 2003, 273 prematuros e prematuros extremos foram submetidos à ligadura cirúrgica do canal arterial por toracotomia miopreservadora, com anestesia geral, em UTI neonatal. Os dados demográficos pré-operatórios e os desfechos de mortalidade e eventos adversos foram, retrospectivamente, avaliados por meio de consulta aos prontuários. RESULTADOS: Não houve óbito relacionado com o ato operatório e 234 (86% pacientes tiveram alta hospitalar. Os 39 óbitos ocorreram entre o 1º e o 51º dias e foram atribuídos à sepse (14 pacientes, hemorragia intracraniana (11 pacientes e enterocolite necrotizante (nove pacientes, todas causas inerentes à prematuridade. Em cinco pacientes, a causa não foi adequadamente estabelecida. As complicações mais freqüentes relacionadas ao procedimento foram: pneumotórax 3,3% (nove pacientes e hemorragia 1,4% (quatro pacientes. CONCLUSÕES: A técnica de toracotomia minimamente invasiva para a ligadura do canal arterial quando realizada em prematuros e prematuros extremos é aplicável, segura, eficaz, relacionada à baixa morbidade e não depende da estrutura hospitalar local.OBJECTIVES: To analyze the feasibility, the safety, and the primary outcomes of a minimally invasive thoracotomy for the occlusion of ligamentum arteriosum (ductus arteriosus in preterm infants. METHODS: Between October 1991 and June 2003, 273 preterm infants and very low birth weight preterm infants were submitted to a surgical occlusion of the ligamentum arteriosum (ductus arteriosus through muscle-sparing thoracotomy under general anesthesia in the neonatal ICU. Pre-operative demographic data, mortality outcomes, and adverse events were retrospectively analyzed through medical records consultation. RESULTS:There were no deaths related to surgery

  14. Capsular Polysaccharide Expression in Commensal Streptococcus Species

    DEFF Research Database (Denmark)

    Skov Sørensen, Uffe B; Yao, Kaihu; Yang, Yonghong

    2016-01-01

    Expression of a capsular polysaccharide is considered a hallmark of most invasive species of bacteria, including Streptococcus pneumoniae, in which the capsule is among the principal virulence factors and is the basis for successful vaccines. Consequently, it was previously assumed that capsule....... pneumoniae evolved by import of cps fragments from commensal Streptococcus species, resulting in a mosaic of genes of different origins. The demonstrated antigenic identity of at least eight of the numerous capsular polysaccharide structures expressed by commensal streptococci with recognized serotypes of S...... of Streptococcus pneumoniae and is the basis for successful vaccines against infections caused by this important pathogen. Contrasting with previous assumptions, this study showed that expression of capsular polysaccharides by the same genetic mechanisms is a general property of closely related species...

  15. Ventilação mecânica não-invasiva com pressão positiva Noninvasive mechanical ventilation with positive pressure

    Directory of Open Access Journals (Sweden)

    Guilherme P. P. Schettino

    2007-06-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Em 2000, foi publicado o II Consenso Brasileiro de Ventilação Mecânica. Desde então, o conhecimento na área da ventilação mecânica avançou rapidamente, com a publicação de numerosos estudos clínicos que acrescentaram informações importantes para o manejo de pacientes críticos em ventilação artificial. Além disso, a expansão do conceito de Medicina Baseada em Evidências determinou a hierarquização das recomendações clínicas, segundo o rigor metodológico dos estudos que as embasaram. Essa abordagem explícita vem ampliando a compreensão e a aplicação das recomendações clínicas. Por esses motivos, a AMIB - Associação de Medicina Intensiva Brasileira - e a SBPT - Sociedade Brasileira de Pneumologia e Tisiologia - julgaram conveniente a atualização das recomendações descritas no Consenso anterior. Dentre os tópicos selecionados a Ventilação Mecânica Não-Invasiva foi um dos temas propostos. O objetivo deste estudo foi descrever os pontos mais importantes relacionados à ventilação mecânica na forma não-invasiva (VMNI e sugerir as principais indicações dessa modalidade. MÉTODO: Objetivou-se chegar a um documento suficientemente sintético, que refletisse a melhor evidência disponível na literatura. A revisão bibliográfica baseou-se na busca de estudos através de palavras-chave e em sua gradação conforme níveis de evidência. As palavras-chave utilizadas para a busca foram: Ventilação mecânica não invasiva: Non-invasive mechanical ventilation. RESULTADOS: São apresentadas recomendações quanto à utilização da VMNI nas diversas formas de insuficiência respiratória e no desmame da ventilação mecânica. CONCLUSÕES: A VMNI está indicada como o tratamento preferencial na exacerbação da DPOC, assim como, na assistência de pacientes em edema agudo de pulmão.BACKGROUND AND OBJECTIVES: The II Brazilian Consensus Conference on Mechanical Ventilation was

  16. Avaliação não-invasiva das propriedades da parede arterial em pacientes com síndrome antifosfolípide primária

    OpenAIRE

    Danieli Castro Oliveira de Andrade

    2008-01-01

    Objetivo: A aterosclerose prematura e acelerada tem sido recentemente reconhecida como um fator adicional de dano vascular nos pacientes com Síndrome Antifosfolípide Primária (SAFP). Esses pacientes podem ser beneficiados com o emprego de métodos para detecção precoce de aterosclerose como a Velocidade de Onda de Pulso (VOP) e o Echo-tracking (ET). Esses métodos têm sido reconhecidos pela capacidade de avaliar de forma não-invasiva a progressão da aterosclerose na parede vascular. Portanto, n...

  17. Diseño e implantación de un sistema de control de movimientos de una cámara para cirugía mínimamente invasiva de puerto único

    OpenAIRE

    Esteban-Muñoz, Javier

    2015-01-01

    En el presente trabajo se describe el diseño e implantación de un sistema de control de movimientos de una cámara intra-abdominal para cirugía mínimamente invasiva de puerto único. La cámara se encuentra integrada en un mini-robot, el cual se introduce en la cavidad abdominal a través de una incisión realizada por los cirujanos. Para llevar a cabo el mencionado control de movimientos será necesario la integración de diversos elementos hardware: microcontroladores de la marca Arduino y la shie...

  18. Consideraciones sobre elaislamiento en exudados vaginales de Streptococcus morbillorum

    Directory of Open Access Journals (Sweden)

    J.M. F. Egido

    1995-06-01

    Full Text Available De el estúdio de 195 exudados vaginales enviados por el Servicio de Ginecologia de este hospital, durante el período 1988-1990, hemos seleccionado aquellos en los que el cultivo fue positivo para estreptococos, 58 (30% de los cuales 26 (44.8% correspondia a Streptococcus morbillorum, 9 (15.5% a Gardnerella vaginalis, 5 (8.6% a Enterococcus faecalis-durans, y a Streptococcus agalactiae, 3 (5.1% a Streptococcus mitis y Streptococcus mitis, 2 (3-4% a Streptococcus bovis y Streptococcus cremoris y 1 (1.7% a Streptococcus salivarius, Streptococcus equinus y Strptococcus sanguis II respectivamente. En todos los casos se observo antecedentes de actuacción medico- quirurjica en el tracto genital, y en el 52.8% de los casos fuô concomitante con el diagnostico clinico-micologico de candidiasis vaginal. La ideittificaccion bacteriologica se realizo mediante el sistema API 20 STREP (sistema api bioMêríeux GmbH, Nütingen, Alemania dando un patron tipico ("excelente identificacción" para el Streptococcus morbillorum.We have tested 195 vaginal secretions sent by Gynecology Service of this hospital between the years 1988 - 1990. We achieved positive culture for streptococci in 58 (30% of these cultures, 26 (44.8% corresponding to Streptococcus morbillorum 9 (15.5%, to Gardnerella vaginalis 5 (8.6%, to Enterococcus faecalis-durans and to Streptococcus agalactiae, 3 (5.1 % to Streptococcus mitis and milleri 2 (3-4%, to Streptococcus bovis and cremoris, and 1 (1.7% to Streptococcus salivarius, equinus and sanguis II respectively. We previously found that 52.8% of these patients were positive for vaginal candidiasis. The bacteriological identification done by the API 20 STREP System (bioMerieux GmbH, Nútingen, Germanyprovides a typical pattern ("good identification" for the Streptococcus morbillorum.

  19. Monoclonal Idiotope Vaccine against Streptococcus pneumoniae Infection

    Science.gov (United States)

    McNamara, Mary K.; Ward, Ronald E.; Kohler, Heinz

    1984-12-01

    A monoclonal anti-idiotope antibody coupled to a carrier protein was used to immunize BALB/c mice against a lethal Streptococcus pneumoniae infection. Vaccinated mice developed a high titer of antibody to phosphorylcholine, which is known to protect against infection with Streptococcus pneumoniae. Measurement of the median lethal dose of the bacteria indicated that anti-idiotope immunization significantly increased the resistance of BALB/c mice to the bacterial challenge. Antibody to an idiotope can thus be used as an antigen substitute for the induction of protective immunity.

  20. Prevalence of mef and ermB genes in invasive pediatric erythromycin-resistant Streptococcus pneumoniae isolates from Argentina Prevalencia de los genes mef y ermB en aislamientos invasivos de Streptococcus pneumoniae resistentes a eritromicina recuperados de pacientes pediátricos en Argentina

    Directory of Open Access Journals (Sweden)

    A. Corso

    2009-03-01

    Full Text Available During the period 1993-2001, a total of 1,499 pneumococci isolates were recovered through the Argentinean surveillance of Streptococcus pneumoniae causing invasive disease in children under 6 years of age, 3.5% of which were erythromycin resistant. Among the 50 erythromycin-resistant strains available, 58% (n=29 harbored mefA/E genes (15 mefA, 30%; and 14 mefE, 28%, 34% (n=17 ermB, and 6% (n=3 both mefA/E plus ermB genes, while one isolate was negative for all the acquired genes studied. The England14-9 (42%, Poland6B-20 (20% and Spain9v-3 (16% clones were responsible for the emergence of pneumococcal macrolide resistance in pediatric population from Argentina.En el marco del programa de vigilancia regional SIREVA, se analizaron 1499 aislamientos de Streptococcus pneumoniae causantes de enfermedad invasiva en menores de 6 años, recuperados entre 1993 y 2001. Se detectó un 3,5% de resistencia a eritromicina. De los 50 aislamientos resistentes a eritromicina que pudieron ser estudiados, el 58% (n=29 tenían los genes mefA/E (15 mefA, 30% y 14 mefE, 28%, el 34% (n=17 el gen ermB y el 6% (n=3 la combinación de genes mefA/E y ermB. Sólo un aislamiento fue negativo para todos los genes analizados. Los clones internacionales England14-9, Poland6B-20 y Spain9v-3 representaron el 78% del total de aislamientos resistentes (42, 20 y 16%, respectivamente y se consideraron los responsables de la emergencia de la resistencia a macrólidos entre los neumococos que afectan a la población pediátrica de Argentina.

  1. Mixed Streptococcus pneumoniae and Streptococcus pyogenes meningitis in an immunocompromised adult patient: a case report.

    Science.gov (United States)

    Demerle, Clémence; Ivanov, Vadim; Mercier, Cédric; Costello, Régis; Drancourt, Michel

    2015-11-29

    Community-acquired meningitis is a monomicrobial infection caused by either viruses or bacteria in the vast majority of patients. We report here one exceptional case of a patient with mixed bacterial meningitis due to Streptococcus pneumoniae and Streptococcus pyogenes. We report the case of a 68-year-old immunocompromised Caucasian man suffering from otitis and then meningitis caused by Streptococcus pneumoniae and Streptococcus pyogenes. Bacteria were undistinguishable by direct microscopic examination of the cerebrospinal fluid. He responded well to treatment with cefotaxime and dexamethasone, with no sequelae observed at the 4-month follow-up. This first reported case of mixed S. pneumoniae and S. pyogenes meningitis illustrates the life-threatening consequences of barotrauma in immunocompromised patients suffering from otorhinolaryngeal infections.

  2. Biofilm Formation Enhances Fomite Survival of Streptococcus pneumoniae and Streptococcus pyogenes

    OpenAIRE

    Marks, Laura R.; Reddinger, Ryan M.; Hakansson, Anders P.

    2014-01-01

    Both Streptococcus pyogenes and Streptococcus pneumoniae are widely thought to rapidly die outside the human host, losing infectivity following desiccation in the environment. However, to date, all literature investigating the infectivity of desiccated streptococci has used broth-grown, planktonic populations. In this study, we examined the impact of biofilm formation on environmental survival of clinical and laboratory isolates of S. pyogenes and S. pneumoniae as both organisms are thought t...

  3. Parallel Evolution of Streptococcus pneumoniae and Streptococcus mitis to Pathogenic and Mutualistic Lifestyles

    OpenAIRE

    Kilian, Mogens; Riley, David R.; Jensen, Anders; Brüggemann, Holger; Tettelin, Hervé

    2014-01-01

    ABSTRACT The bacterium Streptococcus pneumoniae is one of the leading causes of fatal infections affecting humans. Intriguingly, phylogenetic analysis shows that the species constitutes one evolutionary lineage in a cluster of the otherwise commensal Streptococcus mitis strains, with which humans live in harmony. In a comparative analysis of 35 genomes, including phylogenetic analyses of all predicted genes, we have shown that the pathogenic pneumococcus has evolved into a master of genomic f...

  4. Antagonistic action of Streptococcus salivarius and Streptococcus faecalis to Mycobacterium tuberculosis.

    Science.gov (United States)

    Darling, C L; Hart, G D

    1976-10-01

    Streptococcus salivarius and Streptococcus faecalis were found to inhibit the growth of Mycobacterium tuberculosis on Löwenstein-Jensen and Middlebrook 7H11 agars, but not on the latter medium when antibacterial drugs were added. S. faecalis was found to be more inhibitory than S. salivarius to 15 strains of M. tuberculosis. S. salivarius produced little or no inhibition of growth of Runyon group III organisms but was very antagonistic to Runyon group I mycobacteria.

  5. Penggunaan Kultur Makrofag untuk Pengujian Virulensi Streptococcus equi subs. Zooepidemicus (THE USE OF MACROPHAGE CULTURE IN VIRULENCE ASSAY OF STREPTOCOCCUS EQUI SUBSP. ZOOEPIDEMICUS

    Directory of Open Access Journals (Sweden)

    Iwan Harjono Utama

    2016-08-01

    Full Text Available Penggunaan Kultur Makrofag untuk Pengujian Virulensi Streptococcus equi subs. Zooepidemicus (THE USE OF MACROPHAGE CULTURE IN VIRULENCE ASSAY OF STREPTOCOCCUS EQUI SUBSP. ZOOEPIDEMICUS

  6. Streptococcus loxodontisalivarius sp. nov. and Streptococcus saliviloxodontae sp. nov., isolated from oral cavities of elephants.

    Science.gov (United States)

    Saito, Masanori; Shinozaki-Kuwahara, Noriko; Hirasawa, Masatomo; Takada, Kazuko

    2014-09-01

    Four Gram-stain-positive, catalase-negative, coccoid-shaped organisms were isolated from elephant oral cavities. The isolates were tentatively identified as streptococcal species based on the results of biochemical tests. Comparative 16S rRNA gene sequencing studies confirmed the organisms to be members of the genus Streptococcus. Two isolates (NUM 6304(T) and NUM 6312) were related most closely to Streptococcus salivarius with 96.8 % and 93.1 % similarity based on the 16S rRNA gene and the RNA polymerase β subunit encoding gene (rpoB), respectively, and to Streptococcus vestibularis with 83.7 % similarity based on the 60 kDa heat-shock protein gene (groEL). The other two isolates (NUM 6306(T) and NUM 6318) were related most closely to S. vestibularis with 97.0 % and 82.9 % similarity based on the 16S rRNA and groEL genes, respectively, and to S. salivarius with 93.5 % similarity based on the rpoB gene. Based on phylogenetic and phenotypic evidence, these isolates are suggested to represent novel species of the genus Streptococcus, for which the names Streptococcus loxodontisalivarius sp. nov. (type strain NUM 6304(T) = JCM 19287(T) = DSM 27382(T)) and Streptococcus saliviloxodontae sp. nov. (type strain NUM 6306(T) = JCM 19288(T) = DSM 27513(T)) are proposed. © 2014 IUMS.

  7. Streptococcus moroccensis sp. nov. and Streptococcus rifensis sp. nov., isolated from raw camel milk.

    Science.gov (United States)

    Kadri, Zaina; Amar, Mohamed; Ouadghiri, Mouna; Cnockaert, Margo; Aerts, Maarten; El Farricha, Omar; Vandamme, Peter

    2014-07-01

    Two catalase- and oxidase-negative Streptococcus-like strains, LMG 27682(T) and LMG 27684(T), were isolated from raw camel milk in Morocco. Comparative 16S rRNA gene sequencing assigned these bacteria to the genus Streptococcus with Streptococcus rupicaprae 2777-2-07(T) as their closest phylogenetic neighbour (95.9% and 95.7% similarity, respectively). 16S rRNA gene sequence similarity between the two strains was 96.7%. Although strains LMG 27682(T) and LMG 27684(T) shared a DNA-DNA hybridization value that corresponded to the threshold level for species delineation (68%), the two strains could be distinguished by multiple biochemical tests, sequence analysis of the phenylalanyl-tRNA synthase (pheS), RNA polymerase (rpoA) and ATP synthase (atpA) genes and by their MALDI-TOF MS profiles. On the basis of these considerable phenotypic and genotypic differences, we propose to classify both strains as novel species of the genus Streptococcus, for which the names Streptococcus moroccensis sp. nov. (type strain, LMG 27682(T)  = CCMM B831(T)) and Streptococcus rifensis sp. nov. (type strain, LMG 27684(T)  = CCMM B833(T)) are proposed. © 2014 IUMS.

  8. Occurrence, isolation and DNA identification of Streptococcus ...

    African Journals Online (AJOL)

    ajl yemi

    2011-11-28

    Nov 28, 2011 ... Streptococcus thermophilus isolates from traditional butter 'Smen', a fermented product from cow's ... temperature of milk. The fresh butter is removed manually in a single lump called 'Zebda' which is trans- formed into 'Smen' by washing with salt ... Egyptian artisanal butter 'zabady' was reported recently.

  9. Factors associated with colonization of Streptococcus pneumoniae ...

    African Journals Online (AJOL)

    Espinosa-De Los Monteros, L.E., Aguilar-Ituarte, F., Jimenez-Juarez, R.N., Rodriguez-Suarez, R.S.. & Gomez-Barreto, D. (2010) Streptococcus pneumonia serotype replacement in nasopharyngeal colonization in children vaccinated with PCV7 in Mexico. Salud Publica de. Mexico 52, 4-13. Faden, H., Duffy, L., Wasielewski, ...

  10. Dyrkningsnegativ Streptococcus pneumoniae endokarditis diagnosticeret med polymerasekaedereaktion

    DEFF Research Database (Denmark)

    Rasmussen, Rasmus Vedby; Kemp, Michael; Bangsborg, Jette Marie

    2008-01-01

    A 60-year old man was admitted with sepsis and meningitis of unknown aetiology. Underlying aortic valve endocarditis was diagnosed by echocardiography and severe insufficiency led to aortic valve replacement. Application of broad-range PCR to cusp tissue revealed a DNA product, and a diagnosis...... of Streptococcus pneumoniae endocarditis was obtained by DNA sequencing....

  11. Streptococcus suis meningitis in the Netherlands

    NARCIS (Netherlands)

    van de Beek, Diederik; Spanjaard, Lodewijk; de Gans, Jan

    2008-01-01

    We present four patients with Streptococcus suis meningitis identified during a 3.5-year prospective surveillance study in the Netherlands. All cases were associated with exposure to pigs. Patients presented with classic symptoms and signs of bacterial meningitis. Outcome was characterized by severe

  12. Susceptibility Pattern of Nasopharyngeal Isolates of Streptococcus ...

    African Journals Online (AJOL)

    Aims: To determine the rate of nasopharyngeal colonization of Streptococcus pneumoniae among nursery school children in Enugu urban and to determine their antibiotic susceptibility pattern particularly the penicillin resistant strains. Methods: Specimens were collected from the nasopharynx of 385 apparently healthy ...

  13. Antimicrobial activity of propolis against Streptococcus mutans ...

    African Journals Online (AJOL)

    The ethanol extract of propolis (EEP) obtained from beehives of honeybee (Apis mellifera) was investigated for its antimicrobial activities against Streptococcus mutans isolated from dental caries. Agar well diffusion and minimum inhibitory concentration (MIC) determinations were the methods used in this study. The carious ...

  14. Detection and quantification of Streptococcus pneumoniae from ...

    African Journals Online (AJOL)

    The aim of this study was to develop a real time polymerase chain reaction (PCR) for quantitative detection of Streptococcus pneumoniae from clinical respiratory specimens. Initially, 184 respiratory specimens from patients with community acquired pneumonia (CAP) (n = 129) and 55 cases with hospital associated ...

  15. Antimicrobial activity of propolis against Streptococcus mutans

    African Journals Online (AJOL)

    USER

    2010-08-02

    Aug 2, 2010 ... The ethanol extract of propolis (EEP) obtained from beehives of honeybee (Apis mellifera) was investigated for its antimicrobial activities against Streptococcus mutans isolated from dental caries. Agar well diffusion and minimum inhibitory concentration (MIC) determinations were the methods used.

  16. Antibacterial activity of Euphorbia hirta against Streptococcus ...

    African Journals Online (AJOL)

    This investigation was conducted to determine the in-vitro effect of aqueous, ethanol and methanol crude extracts of Euphorbia hirta at concentrations ranging from 10mg/ml – 100mg/ml against three pathogenic bacteria (Streptococcus pneumoniae, Klebsiella pneumoniae and Proteus vulgaris) using cup plate method.

  17. streptococcus pneumoniae , klebsiella pneumoniae proteus vulgaris

    African Journals Online (AJOL)

    DR. AMINU

    ABSTRACT. This investigation was conducted to determine the in-vitro effect of aqueous, ethanol and methanol crude extracts of Euphorbia hirta at concentrations ranging from 10mg/ml – 100mg/ml against three pathogenic bacteria (Streptococcus pneumoniae, Klebsiella pneumoniae and Proteus vulgaris) using cup plate ...

  18. 9230 FECAL ENTEROCOCCUS/STREPTOCOCCUS GROUPS

    Science.gov (United States)

    In 1903 the genus name Enterococcus was proposed for gram-positive, catalase-negative, coccoid-shaped bacterial of intestinal origin. Several years later, it was suggested that the genus name be changed to Streptococcus because of the organisms' ability to form chains of coccoid...

  19. NEW VIRULENCE FACTORS OF STREPTOCOCCUS PNEUMONIAE

    NARCIS (Netherlands)

    Hermans, Peter Wilhelmus Maria; Bootsma, Jeanette Hester; Burghout, Pieter Jan; Kuipers, Oscar; Bijlsma, Johanna Jacoba Elisabeth; Kloosterman, Tomas Gerrit; Andersen, Christian O.

    2011-01-01

    The present invention provides proteins/genes, which are essential for survival, and consequently, for virulence of Streptococcus pneumoniae in vivo, and thus are ideal vaccine candidates for a vaccine preparation against pneumococcal infection. Further, also antibodies against said protein(s) are

  20. (Roxb) Schltr Extract against Streptococcus pyogenes

    African Journals Online (AJOL)

    Purpose: To determine the anti-Streptococcus pyogenes activity of the chloroform extract of Boesenbergia pandurata (Roxb.) Schltr. (Zingiberaceae) and investigate its possible antibacterial mechanisms of action. Methods: Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values were ...

  1. Aspergillus niger causing tracheobronchitis and invasive pulmonary aspergillosis in a lung transplant recipient: case report Aspergillus niger causando traqueobronquite e aspergilose pulmonar invasiva em transplantado de pulmão: relato de caso

    Directory of Open Access Journals (Sweden)

    Melissa Orzechowski Xavier

    2008-04-01

    Full Text Available A case of invasive aspergillosis caused by Aspergillus niger in a lung transplant recipient is described. The patient presented hyperglycemia starting postoperatively, with other complications such as cytomegalovirus infection. The associated predisposing factors and other implications are discussed. Aspergillus niger seems to be a fungal species of low virulence that requires the presence of a severely immunosuppressed host to cause invasive disease.Descreve-se um caso de aspergilose invasiva causada por Aspergillus niger em um paciente transplantado de pulmão com quadros hiperglicêmicos desde o pós-operatório e outras complicações como infecção por citomegalovírus. Os fatores predisponentes associados e outras implicações são discutidos. Aspergillus niger parece ser uma espécie fúngica de baixa virulência, necessitando a presença de um hospedeiro gravemente imunodeprimido para causar doença invasiva.

  2. Beta-haemolytic Streptococcus infection in burns.

    Science.gov (United States)

    Bang, R L; Gang, R K; Sanyal, S C; Mokaddas, E M; Lari, A R

    1999-05-01

    Group A beta haemolytic Streptococcus has been one of the most serious infections in the burn patients resulting in severe cellulitis and sepsis. Penicillin has been used ever since its introduction as prophylaxis against these conditions. Penicillin prophylaxis was used in our burn unit as well without any serious evaluation until December 1992. This prospective study was therefore, undertaken to evaluate the incidence of beta haemolytic Streptococcus infection in burn patients, and its clinical outcome over a period of 5 years in the absence of prophylaxis with penicillin. 14 of the 1213 burn patients admitted to the Al-Babtain Centre for Plastic Surgery and Burns from January 1993 to December 1997 had either colonization or infection with Streptococcus spp. Their mean age was 15 years (range 1 month to 52 years) and the mean burn surface area was 20% (range 5 to 90%). Streptococci were isolated from burn wounds in 10 patients, throat in 3 and blood culture in 1. Group A Streptococcus was found in 5, group C in 3 and group D in 6 patients. In all patients except one the organisms were isolated > or =72 h post burn. The infections were successfully controlled by antibiotic and no detrimental effect was observed either on wound healing or skin graft take. There was no mortality amongst these 14 patients. The study showed that only 1.1% of the burn patients in our unit acquired Streptococcus of which only one third comprised of group A. This study thus demonstrates that the practice of penicillin prophylaxis during the first five post burn days may not be of any value and therefore, deserves discontinuation in units where the incidence of this organism is minuscule.

  3. Regulation of neuraminidase expression in Streptococcus pneumoniae

    Directory of Open Access Journals (Sweden)

    Gualdi Luciana

    2012-09-01

    Full Text Available Abstract Background Sialic acid (N-acetylneuraminic acid; NeuNAc is one of the most important carbohydrates for Streptococcus pneumoniae due of its role as a carbon and energy source, receptor for adhesion and invasion and molecular signal for promotion of biofilm formation, nasopharyngeal carriage and invasion of the lung. Results In this work, NeuNAc and its metabolic derivative N-acetyl mannosamine (ManNAc were used to analyze regulatory mechanisms of the neuraminidase locus expression. Genomic and metabolic comparison to Streptococcus mitis, Streptococcus oralis, Streptococcus gordonii and Streptococcus sanguinis elucidates the metabolic association of the two amino sugars to different parts of the locus coding for the two main pneumococcal neuraminidases and confirms the substrate specificity of the respective ABC transporters. Quantitative gene expression analysis shows repression of the locus by glucose and induction of all predicted transcriptional units by ManNAc and NeuNAc, each inducing with higher efficiency the operon encoding for the transporter with higher specificity for the respective amino sugar. Cytofluorimetric analysis demonstrated enhanced surface exposure of NanA on pneumococci grown in NeuNAc and ManNAc and an activity assay allowed to quantify approximately twelve times as much neuraminidase activity on induced cells as opposed to glucose grown cells. Conclusions The present data increase the understanding of metabolic regulation of the nanAB locus and indicate that experiments aimed at the elucidation of the relevance of neuraminidases in pneumococcal virulence should possibly not be carried out on bacteria grown in glucose containing media.

  4. Cepas invasivas de pneumococo isoladas de crianças e adolescentes em Salvador Invasive pneumococcal strains isolated from children and adolescents in Salvador

    Directory of Open Access Journals (Sweden)

    Cristiana M. Nascimento-Carvalho

    2003-06-01

    Full Text Available OBJETIVOS: descrever resistência antimicrobiana e sorotipos de cepas de pneumococo. MÉTODOS: durante 57 meses, foi conduzida uma vigilância de cepas invasivas de pneumococo de pacientes com idade OBJECTIVE: describe the antimicrobial resistance and serotype distribution of pneumococcal strains. METHODS: in a 57-month period, a laboratory-based surveillance of invasive pneumococcal strains from patients aged < 20 years was conducted. Pneumococcus was identified by means of tests for solubility in bile and optochin. Pneumococcal resistance to penicillin was screened by 1µg oxacillin disc and minimal inhibitory concentration was determined for the strains not susceptible to penicillin. Disc diffusion and broth microdilution methods were used for surveillance of resistance to other antimicrobials. Pneumococci were serotyped by means of the Neufeld-Quellung reactions. RESULTS: of 70 patients, 57.1% were males. The mean age was 1.92 yrs (mean 3.19 + 3.66 yrs, range 1 month to 19.5 yrs; 52.9% and 81.4% were < 2 yrs and < 5 yrs, respectively. The strains were isolated from blood (91.4%, CSF (2.9%, pleural (2.9%, peritoneal (1.4% and abscess (1.4% fluids from patients with pneumonia (77.1%, fever without localizing signs (10.0%, meningitis (4.3%, others (8.6%. Resistance was detected to penicillin (20.0%, trimethoprim-sulfamethoxazole (65.7%, tetracycline (21.4%, ofloxacin (6.3%, erythromycin (5.7%, clindamycin (2.9%. All tested strains were susceptible to chloramphenicol and vancomycin. Among penicillin-resistant strains, high resistance was detected in one, the same that showed intermediate resistance to cefotaxime. The most frequent serotypes were: 14 (22.9%, 5 and 6A (10.0% each, 6B and 19F (8.6% each, 9V, 18C and 23F (5.7% each. Resistance to penicillin was detected in serotypes 14 (71.4%, 6B and 19F (14.3% each. CONCLUSIONS: of 70 strains, 67.2% were classified as serotypes included in the heptavalent conjugate pneumococcal vaccine as well as

  5. Caracterización fenotípica de cepas invasivas de Neisseria meningitidis aisladas en Cuba durante 20 años

    Directory of Open Access Journals (Sweden)

    Isabel Martínez

    2006-04-01

    Full Text Available Se investigaron los marcadores epidemiológicos (serogrupos, serotipos, subtipos, inmunotipos de 429 cepas invasivas, aisladas en Cuba durante 20 años (1982-2002. Basándonos en el comportamiento de la incidencia de la Enfermedad Meningocócica (EM en el período investigado, las cepas se distribuyeron en dos etapas: epidémica y postepidémica. La epidémica, comprendió 279 cepas aisladas entre 1982-1992 y la ostepidémica, incluyó 150 aislamientos pertenecientes al período comprendido entre 1993-2002. Todas se cultivaron en Agar Mueller Hinton con suero fetal bovino (5% y se incubaron 24-48 horas, 37 0C, en atmósfera húmeda con 5% de C02. La identificación de género, especie y serogrupo, se realizó mediante métodos convencionales; para la caracterización de los sero/subtipos e inmunotipos, se utilizó el ensayo inmunoenzimático (ELISA de células enteras con anticuerpos monoclonales. En ambas etapas predominó el serogrupo B (97,90%: epidémica (96,77% y postepidémica (100%. Sin embargo, el serogrupo C (1,43% y cepas no agrupables (1,8%, sólo se observaron en aislamientos de la etapa epidémica. Los otros marcadores prevalentes fueron: serotipo 4 (86,48%, subtipo P1.19,15 (78,32%, inmunotipo L3,7,9 (90,2% , todos mostraron cifras similares en ambos períodos.Predominó el fenotipo B:4:P1.19,15:L3,7,9 (69,69%, aunque, en la etapa postepidémica (77,34%, el porcentaje fue superior al de la etapa epidémica (65,66% (p<0,05; además, en las cepas de este período, se observó una mayor diversidad de asociaciones fenotípicas. Los resultados obtenidos de esta caracterización fenotípica de las cepas de Neisseria meningitidis aisladas de enfermos aporta datos valiosos al estudio, prevención y control exitoso de la EM en Cuba.

  6. Distúrbios causados pelo frio e pelo calor durante corridas de longa distância

    Directory of Open Access Journals (Sweden)

    1999-06-01

    Full Text Available Muitos corredores amadores e de elite participam todos os anos de corridas de longa distância. Quando estes eventos ocorrem em temperaturas altas ou baixas, aumenta o risco de distúrbios térmicos. Contudo, a hipertermia induzida pelo exercício, a hipotermia, a desidratação e outros problemas relacionados podem ser minimizados através de esclarecimentos e um preparo antes do evento. Este documento fornece recomendações para o diretor médico e outras autoridades da organização das corridas nas seguintes áreas: planejamento, profissionais envolvidos na organização, instalações, suprimentos, equipamento e comunicação; fornecimento de esclarecimentos aos participantes; avaliação do estresse térmico; fornecimento de líquidos; e prevenção de questões legais em potencial. Este posicionamento oficial também descreve as condições predisponentes, as formas de diagnóstico e o tratamento dos quatro distúrbios ambientais mais comuns: exaustão pelo calor, colapso pelo calor, hipotermia e congelamento de extremidades. Os objetivos deste documento são: 1 Educar os organizadores e os participantes de corridas de longa distância a respeito das formas mais comuns de distúrbios térmicos incluindo as condições predisponentes, sinais de alerta, suscetibilidade e a redução de sua incidência; 2 Alertar os organizadores sobre as suas responsabilidades civis em potencial no que concerne à segurança do evento e à prevenção de lesões; 3 Recomendar que os organizadores consultem arquivos locais de meteorologia e planejem eventos em horas que provavelmente causem menos estresse térmico de modo a minimizar os efeitos deletérios sobre os participantes; 4 Estimular os organizadores a alertar os participantes sobre o estresse térmico no dia da corrida e as suas implicações no que tange aos distúrbios causados pelo frio e pelo calor; 5 Informar os organizadores sobre as ações preventivas que podem reduzir a incidência dos

  7. ESTIMATIVA DA ERODIBILIDADE DO SOLO PELO MÉTODO INDIRETO

    OpenAIRE

    Dione Cardoso; Fábio Pires

    2017-01-01

    Objetivou-se avaliar a erodibilidade do solo pelo método indireto, baseado nas porcentagens de frações de areia, silte e argila, para quatro classes de solos de alguns municípios localizados no estado do Espírito Santo. Os dados das frações granulométricas do solo foram compilados do Projeto RADAMBRASIL. A equação utilizada para estimar o fator erodibilidade do solo é: Fator K = ((% areia + % silte) / (% argila))/100. A erodibilidade do solo foi superior nos horizontes superficiais em relação...

  8. Responsabilidade civil pelo risco da atividade e o meio ambiente

    OpenAIRE

    Montenegro, Magda

    2003-01-01

    O trabalho se dedica ao estudo da responsabilidade civil e sua aplicação como instrumento de tutela do meio ambiente ecologicamente equilibrado, assegurado pelo art. 225 da Constituição Federal. Para tanto, analisa a evolução do instituto, evidenciando os valores que nortearam a sua construção e aplicação ao longo do desenvolvimento da sociedade. Discorre, igualmente, sobre o crescimento da conscientização ambiental e da natureza múltipla do sistema jurídico de proteção do m...

  9. Molecular and antimicrobial susceptibility profiling of atypical Streptococcus species from porcine clinical specimens.

    Science.gov (United States)

    Moreno, Luisa Z; Matajira, Carlos E C; Gomes, Vasco T M; Silva, Ana Paula S; Mesquita, Renan E; Christ, Ana Paula G; Sato, Maria Inês Z; Moreno, Andrea M

    2016-10-01

    The Streptococcus species present broad phenotypic variation, making identification difficult using only traditional microbiological methods. Even though Streptococcus suis is the most important species for the worldwide swine industry, other Streptococcus species appear to be able to cause disease in swine and could represent a higher underestimated risk for porcine health. The aim of this study was to identify Streptococcus-like isolates by MALDI-TOF MS and 16S rRNA sequencing and further molecular and antibiotic susceptibility characterization of the atypical Streptococcus species capable of causing disease in swine. Fifty presumptive Streptococcus isolates from diseased pigs isolated from different Brazilian States between 2002 and 2014 were evaluated. Among the studied isolates, 26% were identified as Streptococcus hyovaginalis, 24% as Streptococcus plurianimalium, 12% as Streptococcus alactolyticus, 10% as Streptococcus hyointestinalis, and the remaining isolates belonged to Streptococcus henryi (6%), Streptococcus thoraltensis (6%), Streptococcus gallolyticus (6%), Streptococcus gallinaceus (4%), Streptococcus sanguinis (4%), and Streptococcus mitis (2%). The Streptococcus isolates were successfully identified by spectral cluster analysis and 16S rRNA sequencing with 96% of concordance between the techniques. The SE-AFLP analysis also supported Streptococcus species distinction and enabled further observation of higher genetic heterogeneity intra-species. The identified Streptococcus species presented variable MIC values to β-lactams, enrofloxacin and florfenicol, and high resistance rates to tetracyclines and macrolides, which appear to be directly related to the industry's antimicrobial usage and resistance selection. Copyright © 2016 Elsevier B.V. All rights reserved.

  10. Oropharyngeal Colonization by Streptococcus pneumoniae among Medical Students in Indonesia

    OpenAIRE

    Stella Valencia; Yanti Mulyana; Diah Dhianawaty

    2016-01-01

    Background: Streptococcus pneumoniae may colonize the upper respiratory tract without causing any symptoms. Medical students may be inhabited by these bacteria and transmit them to patients who were prone to infections. Streptococcus pneumoniae resistance to antibiotics was recently reported. This study was conducted to determine whether there was Streptococcus pneumoniae colonization among Medical Students of the Faculty of Medicine Universitas Padjadjaran Batch 2011 and analyze its suscepti...

  11. Ventilação mecânica não invasiva no pós-operatório imediato de cirurgia cardíaca Noninvasive mechanical ventilation in immediate postoperative cardiac surgery patients

    Directory of Open Access Journals (Sweden)

    João Batista Raposo Mazullo Filho

    2010-12-01

    Full Text Available INTRODUÇÃO: A ventilação mecânica não invasiva é utilizada rotineiramente em pacientes que evoluem com insuficiência respiratória aguda. Entretanto, estudos mostram evidências controversas para sua indicação em pós-operatório de cirurgia cardíaca. OBJETIVO: Verificar a eficácia da ventilação mecânica não invasiva preventiva no pós-operatório imediato de cirurgia cardíaca, acompanhando seu impacto até o sexto dia de internação. MÉTODOS: Tratou-se de um estudo controlado onde os pacientes em pós-operatório imediato de cirurgia cardíaca foram randomizados em dois grupos: controle (G1 e experimental (G2 que recebeu ventilação mecânica não invasiva no modo pressão de suporte com pressão expiratória final positiva, após extubação durante 2 horas. Foram avaliadas: variáveis ventilatórias, de oxigenação e hemodinâmicas imediatamente após extubação e após ventilação mecânica não invasiva no grupo G2. RESULTADOS: Trinta e dois pacientes finalizaram o estudo, sendo 18 no G1 e 14 no G2. A média da idade do G1 foi 61 anos ± 16,23 e do G2 61,5 anos ± 9,4. Dos vinte e sete pacientes iniciais do G1, nove (33,3% foram excluídos por necessitarem utilizar ventilação mecânica não invasiva, sendo que três pacientes (11,11% retornaram à ventilação mecânica invasiva. Nenhum dos 14 pacientes do G2 foi reentubado. Os pacientes que foram submetidos precocemente a suporte ventilatório apresentaram melhores resultados nas avaliações ao longo do tempo de internação. CONCLUSÃO: A ventilação mecânica não invasiva se mostrou eficaz em pós-operatório de cirurgia cardíaca do grupo estudado, pois incrementou capacidade vital, diminuiu freqüência respiratória, preveniu a insuficiência respiratória aguda pós extubação e reduziu os índices de reintubação.BACKGROUND: : Noninvasive ventilation is routine in acute respiratory failure patients; nevertheless, the literature is controversial for its

  12. Streptococcus bovis bacteremia and underlying gastrointestinal disease.

    Science.gov (United States)

    Murray, H W; Roberts, R B

    1978-07-01

    Twenty-six adults with Streptococcus bovis endocarditis and ten with bacteremia alone were studied to determine possible portals of entry. Of 36 patients (17 with endocarditis, eight with bacteremia alone), 25 had gastrointestinal lesions or manipulation. In 22, the gastrointestinal tract appeared to be the source of S bovis bacteremia. Four patients had either carcinoma of the colon (two) or potentially malignant villous adenomas (two) when first seen because of S bovis bacteremia. None of these, nor two other patients with benign colonic polyps, had bowel-related symptoms or signs prior to admission. Since S bovis is a normal intestinal tract inhabitant, bacteremia may frequently be associated with bowel lesions. Streptococcus bovis bacteremia may provide an early clue to the presence of serious and clinically unexpected gastrointestinal disease. Gastrointestinal tract evaluation should be part of S bovis bacteremia patient management, with or without endocarditis.

  13. Oxidation of glycerol by Streptococcus faecalis.

    Science.gov (United States)

    CLARIDGE, C A; HENDLIN, D

    1962-12-01

    Claridge, C. A. (Merck Sharp & Dohme Research Laboratories, Rahway, N.J.) and David Hendlin. Oxidation of glycerol by Streptococcus faecalis. J. Bacteriol. 84:1181-1186. 1962.-The nature of the factors in yeast autolysate essential for the oxidation of glycerol by Streptococcus faecalis F24 was examined. Two factors appear to be involved in the oxidation of glycerol. One factor was shown to be an inducer of the enzyme system required for glycerol oxidation; the other was shown to be alpha-lipoic acid. Minute quantities of glucose will "spark" growth of S. faecalis in a medium containing glycerol and acetate as carbon sources, probably by supplying sufficient energy for induction of the glycerol-oxidation system.

  14. Streptococcus dysgalactiae endocarditis presenting as acute endophthalmitis

    Directory of Open Access Journals (Sweden)

    Angelina Su-Min Yong

    2012-02-01

    Full Text Available Endogenous endophthalmitis is a rare ocular infection affecting the vitreous and/or aqueous humours. It is associated with poor visual prognosis and its commonest endogenous aetiology is infective endocarditis. The causative organisms of endogenous endophthalmitis complicating endocarditis are mainly Group A or B streptococci. The identification of Group C and G streptococci such as Streptococcus dysgalactiae is comparatively uncommon and has only been reported in a few case reports or series. We therefore report a case of infective endocarditis caused by Streptococcus dysgalactiae first presenting with endogenous endophthalmitis, the most likely source being bilateral feet osteomyelitis in a patient with type I diabetes. The patient was treated with a course of intravenous benzylpenicillin, intravitreal antibiotics, bilateral below knee amputations and mitral valve replacement. She survived all surgical procedures and regained partial visual acuity in the affected eye.

  15. Gene expression in Streptococcus mutans biofilms

    OpenAIRE

    Banu, L D

    2010-01-01

    Streptococcus mutans is considered the major aetiological agent of human dental caries. It is an obligate biofilm-forming bacterium, which resides on teeth and forms, together with other species, an oral biofilm that is often designated as supragingival plaque. This thesis consists of three distinct parts. The first part describes, using microarray analysis, how S. mutans modulates gene expression when grown under different conditions in biofilms. The goal of this analysis was to identify gen...

  16. Recombination-deficient mutant of Streptococcus faecalis

    International Nuclear Information System (INIS)

    Yagi, Y.; Clewell, D.B.

    1980-01-01

    An ultraviolet radiation-sensitive derivative of Streptococcus faecalis strain JH2-2 was isolated and found to be deficient in recombination, using a plasmid-plasmid recombination system. The strain was sensitive to chemical agents which interact with deoxyribonucleic acid and also underwent deoxyribonucleic acid degradation after ultraviolet irradiation. Thus, the mutant has properties similar to those of recA strains of Escherichia coli

  17. Consideraciones sobre elaislamiento en exudados vaginales de Streptococcus morbillorum

    Directory of Open Access Journals (Sweden)

    J.M. F. Egido

    1995-06-01

    Full Text Available De el estúdio de 195 exudados vaginales enviados por el Servicio de Ginecologia de este hospital, durante el período 1988-1990, hemos seleccionado aquellos en los que el cultivo fue positivo para estreptococos, 58 (30% de los cuales 26 (44.8% correspondia a Streptococcus morbillorum, 9 (15.5% a Gardnerella vaginalis, 5 (8.6% a Enterococcus faecalis-durans, y a Streptococcus agalactiae, 3 (5.1% a Streptococcus mitis y Streptococcus mitis, 2 (3-4% a Streptococcus bovis y Streptococcus cremoris y 1 (1.7% a Streptococcus salivarius, Streptococcus equinus y Strptococcus sanguis II respectivamente. En todos los casos se observo antecedentes de actuacción medico- quirurjica en el tracto genital, y en el 52.8% de los casos fuô concomitante con el diagnostico clinico-micologico de candidiasis vaginal. La ideittificaccion bacteriologica se realizo mediante el sistema API 20 STREP (sistema api bioMêríeux GmbH, Nütingen, Alemania dando un patron tipico ("excelente identificacción" para el Streptococcus morbillorum.

  18. Técnica mínimamente invasiva por vía posterior para el tratamiento de fracturas diafisarias del húmero. [Posterior minimally invasive plate osteosynthesis for humeral shaft fractures

    Directory of Open Access Journals (Sweden)

    Gerardo Gallucci

    2013-08-01

    Full Text Available Objetivo Comunicar la técnica mínimamente invasiva por vía posterior para la osteosíntesis de las fracturas diafisarias de húmero y evaluar los resultados clínicos y radiológicos de una serie de pacientes. Material y métodos Se evaluaron 11 pacientes (9 hombres y 2 mujeres; edad promedio, 33 años. Diez fracturas eran cerradas y una era expuesta. Se describe prolijamente la técnica quirúrgica. El seguimiento promedio fue de 22 meses. Resultados La flexo-extensión del codo fue de 140º-0°. La movilidad del hombro fue de 170° de elevación, 70° de rotación externa y rotación interna de D9. El dolor según la escala analógica visual: 0 puntos, DASH: 6; puntaje de la Clínica Mayo: 96, test de la UCLA: 33 puntos. Todas las fracturas consolidaron. Se observó una alineación normal de la diáfisis humeral en 3 de los pacientes, 7 tenían alguna deformidad en varo y uno en valgo. Un paciente desarrolló una parálisis radial posoperatoria y otro necesitó la extracción del implante por una infección. Conclusiones La técnica mínimamente invasiva posterior es una buena opción para el tratamiento de fracturas diafisarias de húmero. Es particularmente útil cuando la línea de fractura está cerca de la fosa olecraneana, debido a que, en estos casos, la técnica mínimamente invasiva por vía anterior es difícil de realizar. Los buenos resultados son similares a los reportados con las vías anterior y lateral.

  19. Swine infection by Streptococcus suis: a retrospective study Infecção em suínos por Streptococcus suis: estudo retrospectivo

    Directory of Open Access Journals (Sweden)

    A.E. Del'Arco

    2008-08-01

    Full Text Available The epidemic aspects of swine infections caused by Streptococcus suis were studied, focusing mainly on the occurrence of several serotypes. A total of 323 samples of S. suis were isolated from clinically ill animals, serotyped according to the co-agglutination procedure, and analyzed. The serotyping revealed that S. suis was present in several Brazilian states. The largest number was isolated from the states of Minas Gerais (62.5%, São Paulo (10.8%, and Paraná (9.3%. Serotype 2 was the most frequent (61.0%, followed by the serotypes 1, 3, 4, 7, and 8. The largest number of isolations was obtained from the brain (60.1%, followed by the lungs (10.4%. About 9.4% of the cases were due to septicemia.Estudaram-se os aspectos epidêmicos das infecções de suínos causadas por Streptococcus suis, enfocando, principalmente, a ocorrência de diferentes sorotipos. Foram analisadas 323 amostras isoladas de animais clinicamente doentes, as quais foram sorotipadas de acordo com o procedimento de co-aglutinação. Foi verificado que S. suis está presente em vários estados brasileiros e o maior número de isolados originou-se dos estados de Minas Gerais (62,5%, São Paulo (10,8% e Paraná (9,3%. O sorotipo 2 foi o mais freqüente (61.0%, seguido pelos sorotipos 1, 3, 4, 7 e 8. Os isolamentos foram obtidos principalmente de cérebro (60,1% e pulmões (10,4%. Os casos de septicemia representaram 9,4%.

  20. Genomics, evolution, and molecular epidemiology of the Streptococcus bovis/Streptococcus equinus complex (SBSEC).

    Science.gov (United States)

    Jans, Christoph; Meile, Leo; Lacroix, Christophe; Stevens, Marc J A

    2015-07-01

    The Streptococcus bovis/Streptococcus equinus complex (SBSEC) is a group of human and animal derived streptococci that are commensals (rumen and gastrointestinal tract), opportunistic pathogens or food fermentation associates. The classification of SBSEC has undergone massive changes and currently comprises 7 (sub)species grouped into four branches based on sequences identities: the Streptococcus gallolyticus, the Streptococcus equinus, the Streptococcus infantarius and the Streptococcus alactolyticus branch. In animals, SBSEC are causative agents for ruminal acidosis, potentially laminitis and infective endocarditis (IE). In humans, a strong association was established between bacteraemia, IE and colorectal cancer. Especially the SBSEC-species S. gallolyticus subsp. gallolyticus is an emerging pathogen for IE and prosthetic joint infections. S. gallolyticus subsp. pasteurianus and the S. infantarius branch are further associated with biliary and urinary tract infections. Knowledge on pathogenic mechanisms is so far limited to colonization factors such as pili and biofilm formation. Certain strain variants of S. gallolyticus subsp. macedonicus and S. infantarius subsp. infantarius are associated with traditional dairy and plant-based food fermentations and display traits suggesting safety. However, due to their close relationship to virulent strains, their use in food fermentation has to be critically assessed. Additionally, implementing accurate and up-to-date taxonomy is critical to enable appropriate treatment of patients and risk assessment of species and strains via recently developed multilocus sequence typing schemes to enable comparative global epidemiology. Comparative genomics revealed that SBSEC strains harbour genomics islands (GI) that seem acquired from other streptococci by horizontal gene transfer. In case of virulent strains these GI frequently encode putative virulence factors, in strains from food fermentation the GI encode functions that are

  1. SHOPPING CENTERS: UMA RELAÇÃO ENTRE OS ATRIBUTOS DE ESCOLHA PELOS CONSUMIDORES VERSUS OS ATRIBUTOS VALORIZADOS PELOS GERENTES

    Directory of Open Access Journals (Sweden)

    Vitor Edson Marques Junior

    2010-04-01

    Full Text Available Embora os shoppings centers estejam em franco processo de ampliação na economia brasileira ainda são poucas as análises envolvendo shoppings centers e atributos motivadores de escolha pelos consumidores. Este trabalho tem por objetivo analisar os fatores motivacionais determinantes para a escolha de um shopping por parte dos consumidores. A amostra deste estudo foi composta por alunos de graduação de cursos de Administração. Adicionalmente, foi realizada uma entrevista em profundidade com os gestores dos três shoppings centers da cidade de Ribeirão Preto. O estudo revelou que os atributos motivadores mais valorizados no processo de escolha foram: limpeza, manutenção, segurança dentro do shopping e qualidade do serviço prestado. Este trabalho pretende contribuir com a compreensão da importância dos fatores valorados pelos consumidores de shoppings centers e assim sendo, fornecer material para a melhoria da gestão destes empreendimentos.

  2. In silico assessment of virulence factors in strains of Streptococcus oralis and Streptococcus mitis isolated from patients with Infective Endocarditis

    DEFF Research Database (Denmark)

    Rasmussen, Louise H.; Iversen, Katrine Højholt; Dargis, Rimtas

    2017-01-01

    Streptococcus oralis and Streptococcus mitis belong to the Mitis group, which are mostly commensals in the human oral cavity. Even though S. oralis and S. mitis are oral commensals, they can be opportunistic pathogens causing infective endocarditis. A recent taxonomic re-evaluation of the Mitis...... group has embedded the species Streptococcus tigurinus and Streptococcus dentisani into the species S. oralis as subspecies. In this study, the distribution of virulence factors that contribute to bacterial immune evasion, colonization and adhesion was assessed in clinical strains of S. oralis (subsp...

  3. [Streptococcus suis infection--clinical manifestations].

    Science.gov (United States)

    Dragojlović, Julijana; Milosević, Branko; Sasić, Neda; Pelemis, Mijomir; Sasić, Milan

    2005-01-01

    Streptococcus suis is a bacterium causing a disease in pigs and rarely in humans. This zoonosis is mostly found as a sporadic disease in individuals that were in contact with the affected or infected pigs: farmers, veterinarians and workers engaged in fresh pork processing. It is assumed that the bacterium enters the body through a cut abrasion in the skin. Initially, the condition resembles a flu, followed by signs of bacteriemia and sepsis. The most frequent clinical manifestation of Streptococcus suis infection is meningitis, leading to hearing loss in over 75% of patients, and subsequent arthritis, endophtalmitis, endocarditis and pneumonia. Toxic shock syndrome with hemorhagic manifestations rarely develops. This study included five male patients aged 22 to 63 years treated in the Intensive Care Unit of the Institute of Infectious and Tropical Diseases in Belgrade, due to Streptococcus suis infection. The aim of this study was to point to the existence of this bacteria in our environment, to describe clinical manifestations of the disease and to point out the importance of its prevention. All patients had epidemiological evidence of being in contact with pork meat. There were no data about diseased pigs. The estimated incubation period was 4 to 8 days. All patients had meningeal signs. Clinical symptoms included shivering, fever, vomiting, headache, malaise, vertigo and tinitus. Three patients presented with alerterd level of awarrness. Four patients developed very severe bilateral hearing impairment, whereas one endophtalmtis and one developed endocarditis. The cerebrospinal fluid (CSF) was opalescent in four patients, and only one patient presented with clear CSF. CSF examination showed typical changes characteristic for bacterial meningitis. Streptoccocus suis was isolated in CSF in all patients, and in one patient the bacteria was isolated in blood as well. All patients underwent treatement with II and III generation cephalosporins and one with one

  4. RESPONSABILIDADE PELO FATO DO PRODUTO E DO SERVIÇO

    Directory of Open Access Journals (Sweden)

    Michele Romero da Costa*

    2007-12-01

    Full Text Available Este trabalho tem ênfase em apresentar a espécie de responsabilidade adotada pelo Código Brasileiro de Defesa do Consumidor para os fornecedores de produtos e serviços,  qual seja a responsabilidade objetiva, demonstrando uma inovação trazida por este diploma para responsabilidade civil do Direito pátrio. Bem como a sua fundamentação e noções gerais a fim de que se identifiquem as relações em que deve ser o código aplicado, entendidas essas como relações de consumo.

  5. Controlo internacional do respeito pelos direitos humanos em Portugal

    OpenAIRE

    Teles, Patrícia Galvão; Albuquerque, Catarina

    1998-01-01

    De acordo com o artigo 1°, parágrafo 3 da Carta das Nações Unidas, uma das tarefas principais desta Organização consiste na promoção e estímulo do respeito pelos direitos humanos e pelas liberdades fundamentais sem qualquer discriminação baseada na raça, sexo, língua ou religião. Desde a sua criação que a Organização das Nações Unidas (ONU) iniciou o seu trabalho de catalogação e, posteriormente, de codificação das normas de direitos humanos existentes, com vista a criar um corpo de normas vi...

  6. Fenotipagem forense pelo DNA através de SNPs

    Directory of Open Access Journals (Sweden)

    Marina Barreiros Virmond

    2016-07-01

    Full Text Available A fenotipagem forense pelo DNA se apresenta como uma abordagem promissora para suprir lacunas na busca de pessoas desconhecidas, em investigações criminais, e na identificação de vítimas de catástrofes e de pessoas desaparecidas. Essa metodologia permite a previsão individual de características externamente visíveis (CEVs a partir de análises com SNPs informativos de fenótipos. Entre esses SNPs, os mais bem descritos são aqueles relacionados com as características de pigmentação, como cor dos olhos, pele e cabelo. Estudos vêm demonstrando o elevado poder de predição dessas CEVs, apresentando resultados satisfatórios na predição da cor de íris castanha e azul e cabelo ruivo, enquanto para as demais ainda são necessárias mais pesquisas para predizer com precisão esses fenótipos. Embora seja muito promissora, a aplicação prática da fenotipagem forense pelo DNA levanta diversas questões de ordem ética e legal. No Brasil, avanços ainda precisam acontecer, uma vez que a população brasileira é heterogênea e grande parte dos marcadores descritos é relacionada às populações europeias. Neste sentido, o Brasil já conta com a Rede Integrada de Bancos de Perfis Genéticos (RIBPG, a qual visa compartilhar e comparar os perfis genéticos entre os bancos do país. Em um futuro próximo essa metodologia estará apta a integrar às rotinas forenses, com grande aplicabilidade e confiabilidade.

  7. Estudo epidemiológico de candidíase invasiva na Unidade de Cuidados Intensivos do Hospital Egas Moniz-Centro Hospitalar Lisboa Ocidental

    OpenAIRE

    Párola, Ana Gomes, 1981-

    2010-01-01

    Tese de mestrado, Microbiologia Clínica, Faculdade de Medicina, Universidade de Lisboa, 2011 Desde o início da década de 80 que os fungos têm emergido como agentes patogénicos, especialmente em doentes hospitalizados e imunocomprometidos. A mortalidade associada a este tipo de infecção é elevada, estando relacionada com diferentes tipos de fungos, sobretudo dos géneros Candida, Cryptococcus, e Aspergillus. Em Portugal, os dados epidemiológicos são escassos, pelo que o estudo epidemiológico...

  8. Ventilação mecânica não-invasiva em paciente com provável pneumonia por pneumocystis jirovecii: relato de caso Noninvasive mechanical ventilation in patient with pneumocystis jirovecii pneumonia: case report

    Directory of Open Access Journals (Sweden)

    Élida Mara Carneiro

    2008-06-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A pneumonia por Pneumocystis jirovecii tem sido uma das doenças mais comuns e uma complicação infecciosa fatal em pacientes com síndrome da imunodeficiência adquirida. O objetivo deste estudo foi apresentar uma paciente com provável diagnóstico de pneumonia por Pneumocystis jirovecii que recebeu ventilação não-invasiva com pressão positiva. RELATO DO CASO: Paciente do sexo feminino, 25 anos, com diagnóstico provável de pneumonia por Pneumocystis jirovecii grave, recebeu ventilação mecânica não-invasiva com pressão positiva. CONCLUSÕES: Todos os parâmetros melhoraram progressivamente nos primeiros cinco dias. Os resultados sugeriram a eficácia desta medida para otimizar a oxigenação, reverter a hipoxemia e prevenir a intubação traqueal.BACKGROUND AND OBJECTIVES: Pneumocystis jirovecii pneumonia has been one of the most common diseases and life-threatening infectious complications in acquired immunodeficiency syndrome patients. The objective of the case report was to present a patient with probable diagnosis of Pneumocystis jirovecii pneumonia who received noninvasive positive pressure ventilation. CASE REPORT: A female patient, 25 years old, with probable diagnosis of Pneumocystis jirovecii pneumonia received noninvasive positive pressure ventilation. CONCLUSIONS: All respiratory parameters progressively improved in the first five days. Results suggest the efficacy of this support to improve oxygenation, to revert hypoxemia and to prevent orotracheal intubation.

  9. Empiema pleural por Eikenella corrodens e Porphyromonas asaccharolytica numa doente diabética sob ventilação não invasiva por síndrome de apneia obstrutiva do sono

    Directory of Open Access Journals (Sweden)

    J. Caiano Gil

    2013-03-01

    Full Text Available Resumo: A Eikenella corrodens é um microrganismo habitualmente encontrado na mucosa oral, trato gastrointestinal e trato geniturinário de humanos. Os casos de infeção pleuropulmonar por este agente são raros em indivíduos imunocompetentes, sendo a aspiração um fator importante na sua patogenia. Apesar de apresentar geralmente um prognóstico favorável, o reconhecimento desta infeção é essencial dado o perfil de sensibilidades característico. Os autores apresentam um caso de empiema pleural por E. corrodens, em coinfeção com Porphyromonas asaccharolytica, numa doente diabética imunocompetente com síndrome de apneia obstrutiva do sono, discutindo o papel da ventilação não invasiva como fator predisponente da referida infeção. Abstract: Eikenella corrodens is a normal inhabitant of the human oral cavity and gastrointestinal and genitourinary tracts. Pleuropulmonary infections by this microorganism are uncommon. Pulmonary aspiration is a chief predisposing condition. Although the outcome is usually favorable, its distinctive antibiotic sensitivity pattern makes bacterial identification an important feature in dealing with this infection. The authors report a case of pleural empyema caused by co-infection with Eikenella corrodens and Porphyromonas asaccharolytica, in an immunocompetent diabetic patient with obstructive sleep apnea syndrome, followed by a discussion on the role of noninvasive ventilation in the development of this infection. Palavras-chave: Empiema pleural, Ventilação não invasiva, Apneia obstrutiva do sono, Eikenella corrodens, Porphyromonas, Keywords: Pleural empyema, Continuous positive airway pressure, Obstructive sleep apnea, Eikenella corrodens, Porphyromonas

  10. Efficacy of some synthetic antibiotics on Streptococcus pneumoniae ...

    African Journals Online (AJOL)

    Effects of some synthetic antibiotics on Streptococcus pnemoniae and Proteus mirabilis isolated from cultured Clarias gariepinus, an important food fish raised in a concrete tank was carried out to ascertain their remedies on mortalities of the Clarias gariepinus adult fish. Streptococcus pnemoniae and Proteus mirabilis were ...

  11. Oropharyngeal Colonization by Streptococcus pneumoniae among Medical Students in Indonesia

    Directory of Open Access Journals (Sweden)

    Stella Valencia

    2016-09-01

    Full Text Available Background: Streptococcus pneumoniae may colonize the upper respiratory tract without causing any symptoms. Medical students may be inhabited by these bacteria and transmit them to patients who were prone to infections. Streptococcus pneumoniae resistance to antibiotics was recently reported. This study was conducted to determine whether there was Streptococcus pneumoniae colonization among Medical Students of the Faculty of Medicine Universitas Padjadjaran Batch 2011 and analyze its susceptibility patterns towards several antibiotics. Methods: A descriptive study was conducted involving 75 Medical Students of the Faculty of Medicine Universitas Padjadjaran Batch 2011 that met the selection criteria. After informed consent, oropharyngeal throat swab was taken and further identification was carried out. Once Streptococcus pneumoniae colony was identified, susceptibility testing would be performed. Results: The identification results indicate that 7 students (9% were colonized by Streptococcus pneumoniae. The susceptibility test showed that out of 7 isolates, 2 were resistant to 1 antibiotic, 1 was resistant to 2 antibiotics, and 4 were resistant to 3 antibiotics. Meanwhile, Streptococcus pneumoniae was resistant to trimethoprim-sulfamethoxazole (71%, oxacillin (71%, erythromycin (57%, and levofloxacin (14%. Conclusions: Streptococcus pneumoniae colonization is found among medical students. All Streptococcus pneumoniae are resistant to one or more antibiotics, mostly to trimethoprim-sulfamethoxazole and oxacillin.

  12. The effect of experimental streptococcus infection in myocarditis on ...

    African Journals Online (AJOL)

    Objective: This study was carried out to investigate the experimental Streptococcus faecalis induction of myocarditis and its effect on some blood parameters, inflammatory markers and histopathological changes in male albino rats. Methods: Rats were infected by intraperitoneal injection of 10 8 CFU/ ml of Streptococcus ...

  13. Endocarditis caused by Streptococcus canis: an emerging zoonosis?

    Science.gov (United States)

    Lacave, Guillaume; Coutard, Aymeric; Troché, Gilles; Augusto, Sandrine; Pons, Stéphanie; Zuber, Benjamin; Laurent, Virginie; Amara, Marlène; Couzon, Brigitte; Bédos, Jean-Pierre; Pangon, Béatrice; Grimaldi, David

    2016-02-01

    We report a human case of infective endocarditis caused by Streptococcus canis. Identification was carried out from positive blood culture using mass spectrometry and SodA gene sequencing. S. canis related zoonotic invasive infections may have been previously underdiagnosed due to inadequate identification of group G Streptococcus species.

  14. The isolation rate of Staphylococcus and Streptococcus pathogenic ...

    African Journals Online (AJOL)

    Staphylococcus and Streptococcus isolates are among the major pathogens causing different diseases in Ethiopia. The aim of this study was to determine the frequency of isolation and sensitivity pattern of Staphylococcus and Streptococcus against the commonly used antibiotics. A retrospective study was carried out in this ...

  15. Diversity of human small intestinal Streptococcus and Veillonella populations.

    Science.gov (United States)

    van den Bogert, Bartholomeus; Erkus, Oylum; Boekhorst, Jos; de Goffau, Marcus; Smid, Eddy J; Zoetendal, Erwin G; Kleerebezem, Michiel

    2013-08-01

    Molecular and cultivation approaches were employed to study the phylogenetic richness and temporal dynamics of Streptococcus and Veillonella populations in the small intestine. Microbial profiling of human small intestinal samples collected from four ileostomy subjects at four time points displayed abundant populations of Streptococcus spp. most affiliated with S. salivarius, S. thermophilus, and S. parasanguinis, as well as Veillonella spp. affiliated with V. atypica, V. parvula, V. dispar, and V. rogosae. Relative abundances varied per subject and time of sampling. Streptococcus and Veillonella isolates were cultured using selective media from ileostoma effluent samples collected at two time points from a single subject. The richness of the Streptococcus and Veillonella isolates was assessed at species and strain level by 16S rRNA gene sequencing and genetic fingerprinting, respectively. A total of 160 Streptococcus and 37 Veillonella isolates were obtained. Genetic fingerprinting differentiated seven Streptococcus lineages from ileostoma effluent, illustrating the strain richness within this ecosystem. The Veillonella isolates were represented by a single phylotype. Our study demonstrated that the small intestinal Streptococcus populations displayed considerable changes over time at the genetic lineage level because only representative strains of a single Streptococcus lineage could be cultivated from ileostoma effluent at both time points. © 2013 Federation of European Microbiological Societies. Published by John Wiley & Sons Ltd. All rights reserved.

  16. Antimicrobial activity of vanadium chloroperoxidase on planktonic Streptococcus mutans cells and Streptococcus mutans biofilms

    NARCIS (Netherlands)

    Hoogenkamp, M.A.; Crielaard, W.; ten Cate, J.M.; Wever, R.; Hartog, A.F.; Renirie, R.

    2009-01-01

    The aim of this study was to investigate the antimicrobial activity of vanadium chloroperoxidase (VCPO) reaction products on planktonic and biofilm cellsof Streptococcus mutans C180-2. Planktonic and biofilm cells were incubated in a buffered reaction mixture containing VCPO, halide (either chloride

  17. Novel Streptococcus infantarius subsp. infantarius variants harboring lactose metabolism genes homologous to Streptococcus thermophilus.

    Science.gov (United States)

    Jans, Christoph; Gerber, Andrea; Bugnard, Joséphine; Njage, Patrick Murigu Kamau; Lacroix, Christophe; Meile, Leo

    2012-08-01

    Streptococcus infantarius subsp. infantarius belongs to the Streptococcus bovis/Streptococcus equinus complex (SBSEC) commonly associated with human and animal infections. We elucidated the lactose metabolism of S. infantarius subsp. infantarius predominant in African fermented milk products. S. infantarius subsp. infantarius isolates (n = 192) were identified in 88% of spontaneously fermented camel milk suusac samples (n = 24) from Kenya and Somalia at log₁₀ 8.2-8.5 CFU mL⁻¹. African S. infantarius isolates excreted stoichiometric amounts of galactose when grown on lactose, exhibiting a metabolism similar to Streptococcus thermophilus and distinct from their type strain. African S. infantarius subsp. infantarius CJ18 harbors a regular gal operon with 99.7-100% sequence identity to S. infantarius subsp. infantarius ATCC BAA-102(T) and a gal-lac operon with 91.7-97.6% sequence identity to S. thermophilus, absent in all sequenced SBSEC strains analyzed. The expression and functionality of lacZ was demonstrated in a β-galactosidase assay. The gal-lac operon was identified in 100% of investigated S. infantarius isolates (n = 46) from suusac samples and confirmed in Malian fermented cow milk isolates. The African S. infantarius variant potentially evolved through horizontal gene transfer of an S. thermophilus-homologous lactose pathway. Safety assessments are needed to identify any putative health risks of this novel S. infantarius variant. Copyright © 2012 Elsevier Ltd. All rights reserved.

  18. Spring forward with improved Nile tilapia Oreochromis niloticus resistant to Streptococcus iniae and Streptococcus agalactiae IB

    Science.gov (United States)

    Tilapia aquaculture worldwide is valued around US $ 7 billion. Tilapia are an important source of protein for domestic (top 5 most consumed seafoods) and global food security. Two gram postitive bacteria, Streptococcus iniae and S. agalactiae, are responsible for billion dollar losses annually. Gen...

  19. Control of Glycolysis by Glyceraldehyde-3-Phosphate Dehydrogenase in Streptococcus cremoris and Streptococcus lactis

    NARCIS (Netherlands)

    POOLMAN, B; BOSMAN, B; KONINGS, WN

    1987-01-01

    The decreased response of the energy metabolism of lactose-starved Streptococcus cremoris upon readdition of lactose is caused by a decrease of the glycolytic activity. The decrease in glycolysis is accompanied by a decrease in the activities of glyceraldehyde-3-phosphate dehydrogenase and

  20. Influence of pH on inhibition of Streptococcus mutans by Streptococcus oligofermentans.

    Science.gov (United States)

    Liu, Ying; Chu, Lei; Wu, Fei; Guo, Lili; Li, Mengci; Wang, Yinghui; Wu, Ligeng

    2014-02-01

    Streptococcus oligofermentans is a novel strain of oral streptococcus that can specifically inhibit the growth of Streptococcus mutans. The aims of this study were to assess the growth of S. oligofermentans and the ability of S. oligofermentans to inhibit growth of Streptococcus mutans at different pH values. Growth inhibition was investigated in vitro using an interspecies competition assay. The 4-aminoantipyine method was used to measure the initial production rate and the total yield of hydrogen peroxide in S. oligofermentans. S. oligofermentans grew best at pH 7.0 and showed the most pronounced inhibitory effect when it was inoculated earlier than S. mutans. In terms of the total yield and the initial production rate of hydrogen peroxide by S. oligofermentans, the effects of the different culture pH values were as follows: pH 7.0 > 6.5 > 6.0 > 7.5 > 5.5 = 8.0 (i.e. there was no significant difference between pH 5.5 and pH 8.0). Environmental pH and the sequence of inoculation significantly affected the ability of S. oligofermentans to inhibit the growth of S. mutans. The degree of inhibition may be attributed to the amount of hydrogen peroxide produced. © 2013 Eur J Oral Sci.

  1. Delineation of Streptococcus dysgalactiae, its subspecies, and its clinical and phylogenetic relationship to Streptococcus pyogenes.

    Science.gov (United States)

    Jensen, Anders; Kilian, Mogens

    2012-01-01

    The taxonomic status and structure of Streptococcus dysgalactiae have been the object of much confusion. Bacteria belonging to this species are usually referred to as Lancefield group C or group G streptococci in clinical settings in spite of the fact that these terms lack precision and prevent recognition of the exact clinical relevance of these bacteria. The purpose of this study was to develop an improved basis for delineation and identification of the individual species of the pyogenic group of streptococci in the clinical microbiology laboratory, with a special focus on S. dysgalactiae. We critically reexamined the genetic relationships of the species S. dysgalactiae, Streptococcus pyogenes, Streptococcus canis, and Streptococcus equi, which may share Lancefield group antigens, by phylogenetic reconstruction based on multilocus sequence analysis (MLSA) and 16S rRNA gene sequences and by emm typing combined with phenotypic characterization. Analysis of concatenated sequences of seven genes previously used for examination of viridans streptococci distinguished robust and coherent clusters. S. dysgalactiae consists of two separate clusters consistent with the two recognized subspecies dysgalactiae and equisimilis. Both taxa share alleles with S. pyogenes in several housekeeping genes, which invalidates identification based on single-locus sequencing. S. dysgalactiae, S. canis, and S. pyogenes constitute a closely related branch within the genus Streptococcus indicative of recent descent from a common ancestor, while S. equi is highly divergent from other species of the pyogenic group streptococci. The results provide an improved basis for identification of clinically important pyogenic group streptococci and explain the overlapping spectrum of infections caused by the species associated with humans.

  2. Delineation of Streptococcus dysgalactiae, Its Subspecies, and Its Clinical and Phylogenetic Relationship to Streptococcus pyogenes

    Science.gov (United States)

    Jensen, Anders

    2012-01-01

    The taxonomic status and structure of Streptococcus dysgalactiae have been the object of much confusion. Bacteria belonging to this species are usually referred to as Lancefield group C or group G streptococci in clinical settings in spite of the fact that these terms lack precision and prevent recognition of the exact clinical relevance of these bacteria. The purpose of this study was to develop an improved basis for delineation and identification of the individual species of the pyogenic group of streptococci in the clinical microbiology laboratory, with a special focus on S. dysgalactiae. We critically reexamined the genetic relationships of the species S. dysgalactiae, Streptococcus pyogenes, Streptococcus canis, and Streptococcus equi, which may share Lancefield group antigens, by phylogenetic reconstruction based on multilocus sequence analysis (MLSA) and 16S rRNA gene sequences and by emm typing combined with phenotypic characterization. Analysis of concatenated sequences of seven genes previously used for examination of viridans streptococci distinguished robust and coherent clusters. S. dysgalactiae consists of two separate clusters consistent with the two recognized subspecies dysgalactiae and equisimilis. Both taxa share alleles with S. pyogenes in several housekeeping genes, which invalidates identification based on single-locus sequencing. S. dysgalactiae, S. canis, and S. pyogenes constitute a closely related branch within the genus Streptococcus indicative of recent descent from a common ancestor, while S. equi is highly divergent from other species of the pyogenic group streptococci. The results provide an improved basis for identification of clinically important pyogenic group streptococci and explain the overlapping spectrum of infections caused by the species associated with humans. PMID:22075580

  3. Kinetic Properties of a Phosphate-Bond-Driven Glutamate-Glutamine Transport System in Streptococcus lactis and Streptococcus cremoris

    NARCIS (Netherlands)

    POOLMAN, B; SMID, EJ; KONINGS, WN

    In Streptococcus lactis ML3 and Streptococcus cremoris Wg2 the uptake of glutamate and glutamine is mediated by the same transport system, which has a 30-fold higher affinity for glutamine than for glutamate at pH 6.0. The apparent affinity constant for transport (KT) of glutamine is 2.5 ± 0.3 μM,

  4. Ferrous iron transport in Streptococcus mutans

    Energy Technology Data Exchange (ETDEWEB)

    Evans, S.L.; Arcenaeux, J.E.L.; Byers, B.R.; Martin, M.E.; Aranha, H.

    1986-12-01

    Radioiron uptake from /sup 59/FeCl/sub 3/ by Streptococcus mutans OMZ176 was increased by anaerobiosis, sodium ascorbate, and phenazine methosulfate (PMS), although there was a 10-min lag before PMS stimulation was evident. The reductant ascorbate may have provided ferrous iron. The PMS was reduced by the cells, and the reduced PMS then may have generated ferrous iron for transport; reduced PMS also may have depleted dissolved oxygen. It was concluded that S. mutans transports only ferrous iron, utilizing reductants furnished by glucose metabolism to reduce iron prior to its uptake.

  5. Sodium-stimulated ATPase in Streptococcus faecalis.

    OpenAIRE

    Kinoshita, N; Unemoto, T; Kobayashi, H

    1984-01-01

    We measured Na+-stimulated ATPase activity in a mutant of Streptococcus faecalis defective in the generation of proton motive force. The activity in membrane vesicles was 62.1 +/- 5.9 nmol of phosphate produced per min per mg of protein when cells were grown on medium containing 0.12 M Na+. Activity decreased as the concentration of Na+ in the growth medium decreased. The decrease in enzyme activity corresponded to the decrease in transport activity for Na+ in both whole cells and membrane ve...

  6. Update on Streptococcus equi subsp equi infections.

    Science.gov (United States)

    Mallicote, Martha

    2015-04-01

    There are few diseases that ignite as much fervor among horse owners as strangles. Streptococcus equi subsp equi (strangles) infections frequently require the treating veterinarian to manage not only the clinical cases but also the biosecurity and provision of information to all involved parties. Although the disease is typically characterized by low mortality and high morbidity, restrictions of horse movement that result from appropriate quarantine procedures often frustrate the involved parties. The aims of this article are to provide clinically relevant information for diagnosis, treatment, and biosecurity management of strangles infection. Copyright © 2015 Elsevier Inc. All rights reserved.

  7. Necrotizing fasciitis caused by group A streptococcus

    Directory of Open Access Journals (Sweden)

    Mikić Dragan

    2002-01-01

    Full Text Available The first case of the confirmed necrotizing fasciitis caused by Group A Streptococcus in Yugoslavia was presented. Male patient, aged 28, in good health, suddenly developed symptoms and signs of severe infective syndrome and intensive pain in the axillary region. Parenteral antibiotic, substitution and supportive therapy was conducted along with the radical surgical excision of the necrotizing tissue. The patient did not develop streptococcal toxic shock syndrome thanks to the early established diagnosis and timely applied aggressive treatment. He was released from the hospital as completely cured two months after the admission.

  8. Lactational mastitis caused by Streptococcus lactarius.

    Science.gov (United States)

    Tena, Daniel; Fernández, Cristina; López-Garrido, Beatriz; Pérez-Balsalobre, Mercedes; Losa, Cristina; Medina-Pascual, María José; Sáez-Nieto, Juan Antonio

    2016-08-01

    Human infections caused by Streptococcus lactarius have not been previously reported. In the present report, we describe a lactational mastitis caused by this organism. The infection occurred in a 28-year-old breast-feeding female, with a 10-days history of moderate pain on the right breast. The patient was cured after antibiotic treatment with levofloxacin for 21 days. Our case shows that S. lactarius should be considered as a cause of lactational mastitis. The introduction of molecular microbiology techniques can be extremely useful for knowing the implication of streptococci in lactational mastitis. Copyright © 2016 Elsevier Inc. All rights reserved.

  9. Streptococcus pneumoniae: estudo das cepas isoladas de liquor Streptococcus pneumoniae: a study of strains isolated from cerebrospinal fluid

    Directory of Open Access Journals (Sweden)

    Ataiza C. Vieira

    2007-02-01

    Full Text Available OBJETIVO: Determinar a freqüência dos sorotipos capsulares e a susceptibilidade antimicrobiana de cepas de Streptococcus pneumoniae, assim como dar suporte à indicação de vacinas disponíveis e ao uso de antimicrobianos. MÉTODOS: Neste estudo retrospectivo, foram adotadas metodologias padronizadas para identificar, sorotipar e determinar a susceptibilidade à penicilina, cefotaxima e vancomicina. O estudo foi realizado com cepas de pneumococo isoladas de liquor em pacientes atendidos nos hospitais públicos e em três hospitais particulares do Distrito Federal no período de janeiro de 1995 a dezembro de 2004. A identificação e a determinação de susceptibilidade a antimicrobianos foi realizada no Laboratório Central de Saúde Pública no Distrito Federal. A sorotipagem foi realizada no Instituto Adolfo Lutz. RESULTADOS: Foram isoladas 232 cepas de pneumococo, compreendendo 126 cepas (54,31% de pacientes do sexo masculino. A idade dos pacientes variou de 0 a 62 anos, sendo agrupados em faixas etárias de 0 a 5, 6 a 17, 18 a 50 e acima de 50 anos. Identificaram-se 36 sorotipos distintos. Desses destacaram-se oito: 14, 6B, 18C, 5, 19F, 23F, 9V e 6A. O teste de oxacilina caracterizou 67 cepas resistentes à penicilina; dessas, 47 foram confirmadas pelo E teste com resistência de nível intermediário. Nenhuma cepa apresentou resistência de alto nível. CONCLUSÃO: A resistência do pneumococo à penicilina apresentou um aumento gradativo nos últimos 10 anos no Distrito Federal. Os sorotipos mais isolados na faixa etária de 0 a 5 anos foram também os mais envolvidos na resistência à penicilina, e estão incluídos na vacina 7-valente.OBJECTIVE: To determine the frequency of capsular serotypes and the antimicrobial susceptibility of strains of Streptococcus pneumoniae, as well as to provide recommendations on the use of available vaccines and antimicrobial drugs. METHODS: In this retrospective study, standard procedures were followed

  10. Ventilação não invasiva no pós-operatório imediato de derivação gastrojejunal com bypass em Y de Roux Noninvasive ventilation in the immediate postoperative of gastrojejunal derivation with Roux-en-Y gastric bypass

    Directory of Open Access Journals (Sweden)

    Kivânia C. Pessoa

    2010-08-01

    Full Text Available CONTEXTUALIZAÇÃO: Pacientes obesos mórbidos desenvolvem mais atelectasias durante a anestesia geral que pacientes não obesos, e elas persistem 24 horas após o término do procedimento cirúrgico. OBJETIVOS: Este estudo avaliou o efeito da ventilação não invasiva com dois níveis pressóricos (BiPAP na função pulmonar, a incidência de complicações pulmonares no pós-operatório imediato e o desenvolvimento de deiscência de anastomoses em pacientes obesos mórbidos submetidos a derivação gastrojejunal em Y-de-Roux (RYGB. MÉTODOS: Estudo analítico, ensaio clínico envolvendo pacientes submetidos à RYGB, com índice de massa corpórea (IMC de pelo menos 35 kg/cm², randomizados para receber BiPAP (estudo ou terapia padrão com oxigênio (controle, nas primeiras quatro horas de pós-operatório. Não foram incluídos pacientes com doença pulmonar aguda ou crônica ou que necessitaram de ventilação mecânica invasiva ao término da cirurgia. Capacidade vital, pressão inspiratória e expiratória máxima, gasometria arterial foram mensurados no pré-operatório e no 1º pós-operatório; radiografia de tórax foi realizada no 3º pós-operatório. RESULTADOS: Dezoito pacientes foram incluídos no estudo, 10 receberam BiPAP e 8 terapia padrão com oxigênio. O grupo do estudo teve melhor pressão parcial de oxigênio e menor pressão expiratória máxima no pós-operatório que o controle. Não se observou deiscência de anastomose em nenhum grupo. Não houve diferença significante entre o grupo controle e o do estudo com relação à perda da capacidade vital, pressão inspiratória máxima no pós-operatório e incidência de atelectasias. CONCLUSÃO: O BiPAP no pós-operatório de gastroplastia foi útil para melhorar a oxigenação, não aumentando a incidência de deiscência de anastomose.BACKGROUND: Morbidly obese patients develop more atelectasis during general anesthesia than non-obese ones, and these atelectasis persist

  11. Aferição não-invasiva de úlcera por pressão simulada em modelo plano Evaluación no invasiva de úlcera por presión simulada en modelo llano Non-invasive measurement of pressure ulcer simulated in plain model

    Directory of Open Access Journals (Sweden)

    Aline Gomes Lopes

    2009-04-01

    Full Text Available Estudo quase-experimental, com o qual objetivou aperfeiçoar o sistema de projeção dos pontos luminosos de um método já existente, tornando-o portátil, e verificar a acurácia desse novo sistema. O estudo foi realizado por meio do desenvolvimento de um sistema de fotografia digitalizada e processada pela visão computacional em um modelo de superfície plana. Os resultados mostraram erro de 1,51% para a profundidade e de -10,42% para o volume, concluindo ser um método adequado para aferição de profundidade e volume com erros de acurácia compatíveis com os descritos na literatura.Estudio casi-Aferição não-invasiva de úlcera por pressão simulada em modelo planoexperimental, con el objetivo de perfeccionar el sistema de proyección de los puntos luminosos de un método ya existente, volviéndolo portátil, y verificar la acuracia de ese nuevo sistema. El estúdio realizado a través del desarrollo de um sistema de fotografia digitalizada y procesada por la visión computacional en un modelo de superfície llana. Los resultados mostraron um error de 1,51% para la profundidad y de -10,42% para el volumen, concluyendo ser método adecuado para la evaluación de los descriptos em la literatura.That is an quasi-experimental study that aims to improve and make portable an existing method for projecting light points to estimate geometrical properties of a cavity. A computer vision system was developed in order to process input images and calculate volume and depth of a cavity in a plain surface. An error of 1,51% for depth and -10,42% for volume occurred. So this is an adequate method for estimating geometrical properties of cavities with accuracy errors compatible with those errors described in the literature.

  12. Dismorfia muscular: A busca pelo corpo hiper musculoso

    Directory of Open Access Journals (Sweden)

    Andréa Pires Azevedo

    2012-03-01

    Full Text Available A dismorfia muscular tem sido identificada tanto em homens quanto em mulheres, provocando alterações da perceção da autoimagem e prejuízos socioculturais, e na saúde e bem-estar dos indivíduos. Nesse sentido, o objetivo deste estudo é analisar os aspetos socioculturais, psicológicos e o uso de recursos ergogênicos relacionados à dismorfia muscular, bem como, identificar os riscos promovidos pelo transtorno. Participaram 20 indivíduos, inscritos na rede mundial de computadores. Utilizou-se um questionário para coleta de dados e a análise documental para interpretação das respostas. Os resultados demonstram que as preocupações com a imagem corporal geram insegurança social, baixa autoestima e sentimentos de inferioridade, que seriam resolvidos se a pessoa tivesse corpos belos e fortes. A dismorfia muscular pode aumentar o risco de uso dos esteroides anabolizantes e o uso indiscriminado de suplementos alimentares. Conclui-se que a dismorfia muscular causa sofrimentos e prejuízos psicológicos, socioculturais e, desse modo, compromete a saúde das pessoas.

  13. ESTIMATIVA DA ERODIBILIDADE DO SOLO PELO MÉTODO INDIRETO

    Directory of Open Access Journals (Sweden)

    Dione Cardoso

    2017-01-01

    Full Text Available Objetivou-se avaliar a erodibilidade do solo pelo método indireto, baseado nas porcentagens de frações de areia, silte e argila, para quatro classes de solos de alguns municípios localizados no estado do Espírito Santo. Os dados das frações granulométricas do solo foram compilados do Projeto RADAMBRASIL. A equação utilizada para estimar o fator erodibilidade do solo é: Fator K = ((% areia + % silte / (% argila/100. A erodibilidade do solo foi superior nos horizontes superficiais em relação aos subsuperficiais para todos os solos avaliados, sendo de 0,0133 t ha h ha-1 MJ-1 mm-1 (Latossolos, 0,0054 t ha h ha-1 MJ-1 mm-1 (Chernossolos, 0,3556 t ha h ha-1 MJ-1 mm-1 (Argissolos e 0,0163 t ha h ha-1 MJ-1 mm-1 (Cambissolos. A correlação entre os horizontes foi de 0,999. Os valores de erodibilidade do solo foram superiores nos horizontes superficiais para todos os solos avaliados. Há diferença estatística entre as classes de solo em relação a sua erodibilidade. Há uma boa correlação da erodibilidade do solo dos horizontes superficiais e subsuperficiais.

  14. O conhecimento pré-colombiano do Brasil pelos portugueses

    Directory of Open Access Journals (Sweden)

    Thomaz Oscar Marcondes de Souza

    1961-09-01

    Full Text Available A brilhante emprêsa marítima realizada pelo infante D. Henrique ao longo da costa ocidental da África; a passagem do cabo da Boa Esperança em 1488 por Bartolomeu Dias; o desco-brimento do caminho marítimo para a índia por Vasco da Ga-ma em 1498; as guerras e conquistas na Ásia com a figura ím-par de Afonso de Albuquerque; o ter Portugal mantido por mais de três séculos a integridade territorial do Brasil, vencendo fran-ceses, holandeses e espanhóis, não satisfazem a vaidade nacio-nal de certos historiadores portuguêses . Querem mais . Que-rem que tudo que possa constituir prioridade, em se tratando de descobrimento marítimos, pertença a Portugal. Navegado-res do quilate de Colombo, Caboto, Vespucci, Pinzon, Verraz-zano, Cartier e outros, não passam de medíocres, de embustei-ros e de falsos descobridores que se apropriaram de glórias alheias, sendo que o Genovês, o pouco que sabia de navegação, aprendeu em Portugal.

  15. Septic arthritis due to Streptococcus sanguis.

    Science.gov (United States)

    Mandac, Inga; Prkacin, Ingrid; Matovinović, Mirjana Sabljar; Sustercić, Dunja

    2010-06-01

    Septic arthritis may represent a direct invasion of joint space by various microorganisms, including bacteria, viruses and fungi. Although any infectious agent may cause bacterial arthritis, bacterial pathogens are the most significant because of their rapidly destructive nature. We present a case of septic arthritis in a 56-year old male patient due to Streptococcus viridans which is member of the viridans group streptococci. Patient was admitted to Our Hospital presented as fever of unknown origin, losing more than 30 kg of body weight during couple of months, and anemia of chronic disease as paraneoplastic process. He had long history of arterial hypertension and stroke. There was swelling and pain of the right sternoclavicular joint and precordial systolic murmur in physical status. A large diagnostic panel has been made, computerized tomography (CT) of right sternoclavicular joint showed widening of periarticular soft tissue and loss of clavicular corticalis. Cytologic analysis of synovial fluid showed more than 90% of polymorphonuclear leukocytes. There were no crystals on microscopic examination and Gram stain of fluid was negative. Blood cultures were positive for S. sanguis and there was a consideration about possible periodontal disease. Stomatologic examination verified periapical ostitis and extraction of potential cause of infection has been done. Therapy with benzilpenicilline was followed by the gradual improvement of clinical and laboratory parameters. Although viridans group streptococci and Streptococcus sanguis in particular are rare causes of septic arthritis in native joints, they should be considered in the differential diagnosis of periodontal disease.

  16. STABILIZATION OF STREPTOCOCCUS FAECALIS PROTOPLASTS BY SPERMINE.

    Science.gov (United States)

    HAROLD, F M

    1964-11-01

    Harold, F. M. (National Jewish Hospital, Denver, Colo.). Stabilization of Streptococcus faecalis protoplasts by spermine. J. Bacteriol. 88:1416-1420. 1964.-Lysis of protoplasts of Streptococcus faecalis subjected to osmotic shock was prevented by the presence of 10(-3)m spermine and other divalent cations. Protein and nucleic acids were largely retained, but compounds of low molecular weight were discharged into the medium and the capacity for glycolysis was lost. Under these conditions, spermine was bound to the protoplasts. It could not be removed by washing with water or nonelectrolytes, but was displaced by salts, polyanions, and polycations. Removal of the spermine restored the osmotic fragility of the protoplasts, which could once again be protected from lysis by impermeant solutes. Protoplasts were also stabilized, in the absence of osmotic shock, by prolonged incubation with cations in 0.5 m sucrose. By either procedure, the protoplasts became resistant not only to osmotic lysis but also to sonic oscillation. It is concluded that the stabilization of protoplasts resulted from ionic binding of the cation to acidic sites on the external surface of the plasma membrane. This conferred upon the membrane additional mechanical strength, perhaps by the cross-linking of subunits, but did not alter its permeability to extracellular solutes.

  17. ANAEROBIC ENDOGENOUS METABOLISM IN STREPTOCOCCUS FAECALIS.

    Science.gov (United States)

    WALKER, D J; FORREST, W W

    1964-02-01

    Walker, D. J. (CSIRO, University of Adelaide, Adelaide, South Australia), and W. W. Forrest. Endogenous metabolism in Streptococcus faecalis. J. Bacteriol. 87:256-262. 1964.-Washed suspensions of Streptococcus faecalis incubated in phosphate buffer (pH 6.0) under anaerobic conditions released amino acids into the suspending medium. Little or no carbohydrate was released in soluble form, and no acid production could be detected. Cell lipid was stable, and only a small amount of nucleotide (material absorbing at 260 mmu) was released. Estimates of total carbon produced in soluble form showed that this could be almost entirely accounted for as amino acid. Over the short period during which amino acid was produced (up to 5 hr), the glycolytic activity of the cells remained fairly constant, and fell slowly thereafter to low values in 24 to 48 hr; the rate of fall depended on cell concentration. Whereas exogenous sources of energy protected against loss of glycolytic activity, arsenate, hydroxylamine, or replacement of phosphate by other buffers accelerated loss of glycolytic activity. Restoration of glycolytic activity in aged cells could be achieved by incubation with amino acids plus an energy source, with concurrent synthesis of protein but no apparent growth. Ammonium ion was not effective in protecting or restoring glycolytic activity. The nature of changes which took place during endogenous metabolism are discussed.

  18. Streptococcus pneumoniae sepsis in the newborn.

    Science.gov (United States)

    Malhotra, Atul; Hunt, Rod W; Doherty, Richard R

    2012-02-01

    Streptococcus pneumoniae (SP) is an uncommon cause of neonatal sepsis. To report on the spectrum of morbidity associated with SP infections in the neonatal period. A case series of SP infection in the neonatal period was studied. Maternal and neonatal outcomes were noted. Four cases of neonatal SP infection are reported, one of which was due to a strain with reduced susceptibility to penicillin. All four cases had very early onset of severe clinical disease with bacteremia and pneumonia. In one case a retrospective diagnosis of meningitis was made as well. Maternal illness was a feature in one of these infants. Although less common now than in the pre-antibiotic era, Streptococcus pneumoniae remains a rare but important cause of neonatal sepsis and can mimic early onset Group B streptococcal sepsis. It is unclear whether current infant or adult pneumococcal immunisation programs might influence its incidence in the neonatal period. The potential for strains with reduced susceptibility to β-lactam antibiotics to cause neonatal infection needs to be considered in relevant settings. © 2010 The Authors. Journal of Paediatrics and Child Health © 2010 Paediatrics and Child Health Division (Royal Australasian College of Physicians).

  19. Novel Regulatory Small RNAs in Streptococcus pyogenes

    Science.gov (United States)

    Tesorero, Rafael A.; Yu, Ning; Wright, Jordan O.; Svencionis, Juan P.; Cheng, Qiang; Kim, Jeong-Ho; Cho, Kyu Hong

    2013-01-01

    Streptococcus pyogenes (Group A Streptococcus or GAS) is a Gram-positive bacterial pathogen that has shown complex modes of regulation of its virulence factors to cause diverse diseases. Bacterial small RNAs are regarded as novel widespread regulators of gene expression in response to environmental signals. Recent studies have revealed that several small RNAs (sRNAs) have an important role in S. pyogenes physiology and pathogenesis by regulating gene expression at the translational level. To search for new sRNAs in S. pyogenes, we performed a genomewide analysis through computational prediction followed by experimental verification. To overcome the limitation of low accuracy in computational prediction, we employed a combination of three different computational algorithms (sRNAPredict, eQRNA and RNAz). A total of 45 candidates were chosen based on the computational analysis, and their transcription was analyzed by reverse-transcriptase PCR and Northern blot. Through this process, we discovered 7 putative novel trans-acting sRNAs. Their abundance varied between different growth phases, suggesting that their expression is influenced by environmental or internal signals. Further, to screen target mRNAs of an sRNA, we employed differential RNA sequencing analysis. This study provides a significant resource for future study of small RNAs and their roles in physiology and pathogenesis of S. pyogenes. PMID:23762235

  20. Enfermedad neumocócica invasiva en la población infantil de la Comunidad Valenciana Invasive pneumococcal disease in children in the community of Valencia, Spain

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    M. Goicoechea-Sáez

    2003-12-01

    Full Text Available Objetivo: La enfermedad neumocócica es una causa frecuente de morbilidad y mortalidad entre la población infantil. La reciente autorización de la vacuna conjugada heptavalente ha incrementado el interés científico que suscita esta enfermedad. El objetivo de este estudio es conocer las características epidemiológicas y clínicas, así como la evolución de esta enfermedad invasiva en la población infantil de la Comunidad Valenciana. Método: Los datos se han obtenido de las historias clínicas de los niños menores de 15 años, con aislamiento del neumococo, atendidos en todos los hospitales públicos de la Comunidad Valenciana durante el período 1996-2000. La evolución de la incidencia se valoró mediante la comparación de tasas, los signos clínicos y su evolución (secuelas y letalidad mediante la evaluación de la frecuencia y su distribución por edades. Resultados: Se registró un total de 127 casos, lo que representa un promedio de tasa anual de 3,89/105 habitantes en los menores de 15 años y de 20,14 en los menores de 2 años. Presentaron antecedentes de problemas de salud un 29,1% de los pacientes. Las manifestaciones clínicas predominantes fueron sepsis/bacteriemia (38%, neumonía (31% y meningitis (24%. Al alta, presentaban secuelas 10 niños, de los que el 75% eran menores de 2 años. Fallecieron 8 niños (letalidad del 6,3%. Conclusiones: En nuestro medio, durante el período estudiado, la infección neumocócica se presenta sobre todo en los niños menores de 2 años, así como en los mayores de esta edad con antecedentes de problemas de salud. En estos últimos se ha encontrado una mayor mortalidad. Sería conveniente introducir la enfermedad neumocócica en el Sistema de Vigilancia Epidemiológica, lo que nos permitiría disponer de estimaciones más precisas de su evolución epidemiológica y valorar si la vacuna conjugada es la solución a los problemas que plantea esta bacteria en la actualidad

  1. Vertebroplastia percutânea: uma efetiva técnica cirúrgica minimamente invasiva Percutaneous vertebroplasty: an effective, minimally invasive surgical technique

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    Nicolas Gerardo Gómez Cordero

    2008-02-01

    Full Text Available OBJETIVO: Apresentar a nossa experiência no Hospital Português da Bahia com a vertebroplastia percutânea, observando a evolução clínica e radiográfica dos pacientes. MÉTODOS: Foram analisados, retrospectivamente, os dados de 25 pacientes com fraturas por compressão dos corpos vertebrais, cinco homens e 20 mulheres com idade entre 65 e 88 anos de idade, submetidos à vertebroplastia percutânea entre 2003 e 2006, observando-se seus resultados e complicações. Os critérios de inclusão consistiram em: dor intensa na coluna vertebral com impotência funcional conseqüente à fratura recente; falha no tratamento conservador - medicação analgésica e fisioterapia - e pacientes com estabilidade clínica compatível com a submissão de procedimento anestésico. Entre os pacientes, 22 apresentavam fraturas resultantes de osteoporose, um era portador de hemangioma, outro apresentou fratura por linfoma e dois sofreram fratura vertebral por mieloma múltiplo. Os pacientes foram acompanhados semanalmente no primeiro mês e a cada três meses, com um mínimo de 12 meses e um máximo de 36 meses após o procedimento percutâneo. A avaliação quanto à dor, atividade de vida diária e necessidade do uso de analgésicos foi realizada por um dos autores, baseada em questionário subjetivo para tal, previamente elaborado. RESULTADOS: Foram observados resultados clínicos de excelentes a bons em 23 pacientes (92% e regulares a maus em dois pacientes (8%. Houve deterioração por complicação em um caso. Todos os pacientes (100% retornaram às suas atividades prévias; quatro pacientes (16% mudaram a prática das suas atividades de vida diárias. CONCLUSÃO: A vertebroplastia percutânea é uma técnica cirúrgica minimamente invasiva que proporcionou, em nossa casuística, rápido e significativo alívio da dor e melhora da qualidade das atividades de vida diária dos pacientes submetidos a esse procedimento.OBJECTIVE: To present the authors

  2. Properties of Streptococcus thermophilus fermented milk containing variable concentrations of Bifidobacterium longum and Lactobacillus acidophilus Propriedades de leites fermentados por Streptococcus thermophilus contendo concentrações variáveis de Bifidobacterium longum e Lactobacillus acidophilus

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    Patrícia Blumer Zacarchenco

    2006-09-01

    Full Text Available Sensory evaluation and analysis of pH, titratable acidity and microbial counts after 1, 7, 14 and 21 days of storage of five combinations of lyophilized Bifidobacterium longum and/or Lactobacillus acidophilus added to milk fermented with Streptococcus thermophilus were studied during storage at 4ºC. The taste and acidity sensory attributes were significantly (PForam estudadas as características sensoriais, de pH e acidez de cinco combinações de leites fermentados por Streptococcus thermophilus, adicionados de Bifidobacterium longum e/ou Lactobacillus acidophilus liofilizados. Os efeitos sobre as características sensoriais tornaram-se significantes (p < 0,05 com o aumento do tempo de estocagem. As combinações favoritas continham, inicialmente, Bif. longum e L. acidophilus (10(8 e 10(7ufc/mL, respectivamente e Bif. longum apenas (10(8ufc/mL. Estas combinações não diferiram significativamente do leite fermentado padrão, nem entre si. As notas mais baixas e os maiores valores de acidez titulável foram apresentados pelo leite fermentado por Streptococcus thermophilus contendo apenas L. acidophilus (10(8ufc/mL, concentração inicial. Durante 21 dias de estocagem a 4ºC, as contagens de células viáveis de Str. thermophilus não mudaram, as de Bif. longum mantiveram-se constantes ou reduziram em um ciclo logarítmico e, as de L. acidophilus reduziram de 1 a 2 ciclos logarítmicos. Não foi observada inibição da pós-acidificação resultante da presença de bifidobactéria ou L. acidophilus.

  3. Avaliação clínica não-invasiva de disfagia no AVC: Revisão sistemática Evaluación clínica no invasiva de disfagia en el ACV: Revisión sistemática Non-invasive dysphagia screening for stroke survivors: Systematic review

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    Anabela Tavares Cardoso

    2011-12-01

    Full Text Available Em Portugal, o AVC é considerado a principal causa de morte, bem como de incapacidade associada às sequelas cognitivas e motoras. A incidência de disfagia varia entre 22 - 65% dos doentes (Ramsey, Smithard e Kalra, 2003. Estudos revelam que 30 - 40% dos idosos institucionalizados apresentam disfagia, que se traduz numa alta incidência de complicações por aspiração (World Gastroenterology Organization, 2004. Assim, foi realizada uma revisão sistemática para minimizar os riscos da avaliação empírica, identificando os recursos disponíveis, de baixo custo e fácil acesso, com o objetivo de aumentar os ganhos em saúde. Seguiu-se a metodologia do Cochrane Handbook, delineando-se a seguinte questão: “que métodos de avaliação não-invasiva da disfagia na pessoa com AVC existem com validade e fidelidade demonstradas?” Desenvolveu-se uma pesquisa dos estudos primários publicados a partir de 2005 nas bases de dados científicas. Conseguiram-se identificar dois estudos com os resultados da aplicação de duas escalas distintas usadas no diagnóstico de disfagia em doentes com AVC (em fase aguda e/ou em reabilitação, sendo que um deles avalia também o risco de aspiração. Os resultados preveêm ganhos em saúde com a utilização destas escalas, ainda que seja necessário treino e estudos posteriores para a obtenção de uma amostra significativa.En Portugal, el ACV es considerado la principal causa de muerte, así como de incapacidad asociada a las secuelas cognitivas y motoras. La incidencia de disfagia varía entre 22 a 65% de los pacientes (Ramsey, Smithard y Kalra, 2003. Los estudios revelan que 30 a 40% de los adultos mayores institucionalizados presentan disfagia, lo cual se traduce en una alta incidencia de complicaciones por aspiración (World Gastroenterology Organization, 2004. Así, fue realizada una revisión sistemática para minimizar los riesgos de la evaluación empírica, identificando los recursos disponibles

  4. Liver abscess associated with an oral flora bacterium Streptococcus anginosus

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    Hava Yılmaz

    2012-03-01

    Full Text Available Viridans group Streptococcus, a bacterium of the oral flora has a low-virulence and rarely causes liver abscess. A 40-yearoldmale patient was admitted to the hospital complaining of high fever and malaise. A physical examination revealedpoor oral hygiene; there were caries on many teeth, and he had hepatomegaly. A hepatic abscess was identified inhis abdominal tomography. Streptococcus anginosus was isolated from the drainage material, and the bile ducts werenormal in his MRI cholangiography. An immunocompetent case of liver abscess caused by Streptococcus anginosusoriginated most probably from oral flora is presented here. J Microbiol Infect Dis 2012; 2(1:33-35

  5. Antibacterial synergistic effect of chlorhexidine and hydrogen peroxide against Streptococcus sobrinus, Streptococcus faecalis and Staphylococcus aureus.

    Science.gov (United States)

    Steinberg, D; Heling, I; Daniel, I; Ginsburg, I

    1999-02-01

    Chlorhexidine (CHX) and Hydrogen peroxide (HP) are potent antibacterial agents that are used in controlling dental plaque. However, both agents bear undesired side-effects. We have tested the hypothesis that an antibacterial synergistic effect can occur between the two agents against Streptococcus sobrinus, Streptococcus faecalis and Staphylococcus aureus. We have found that at several combinations of HP and CHX an antibacterial synergistic effect does occur, while at other combinations a on-significant synergism was noticed. No antagonism between the two agents was found in our experimental system. It can be postulated that the mechanism of this synergistic effect is via alteration of the bacterial cell-surface by CHX thereby allowing for an increased amount of HP to penetrate and to react with the intercellular organelles of the bacteria. These results suggest that CHX and HP can be of use in controlling the dental plaque in the oral cavity.

  6. Comparison of genes required for H2O2 resistance in Streptococcus gordonii and Streptococcus sanguinis

    Science.gov (United States)

    Xu, Yifan; Itzek, Andreas

    2014-01-01

    Hydrogen peroxide (H2O2) is produced by several members of the genus Streptococcus mainly through the pyruvate oxidase SpxB under aerobic growth conditions. The acute toxic nature of H2O2 raises the interesting question of how streptococci cope with intrinsically produced H2O2, which subsequently accumulates in the microenvironment and threatens the closely surrounding population. Here, we investigate the H2O2 susceptibility of oral Streptococcus gordonii and Streptococcus sanguinis and elucidate potential mechanisms of how they protect themselves from the deleterious effect of H2O2. Both organisms are considered primary colonizers and occupy the same intraoral niche making them potential targets for H2O2 produced by other species. We demonstrate that S. gordonii produces relatively more H2O2 and has a greater ability for resistance to H2O2 stress. Functional studies show that, unlike in Streptococcus pneumoniae, H2O2 resistance is not dependent on a functional SpxB and confirms the important role of the ferritin-like DNA-binding protein Dps. However, the observed increased H2O2 resistance of S. gordonii over S. sanguinis is likely to be caused by an oxidative stress protection machinery present even under anaerobic conditions, while S. sanguinis requires a longer period of time for adaptation. The ability to produce more H2O2 and be more resistant to H2O2 might aid S. gordonii in the competitive oral biofilm environment, since it is lower in abundance yet manages to survive quite efficiently in the oral biofilm. PMID:25280752

  7. Reappraisal of the taxonomy of Streptococcus suis serotypes 20, 22 and 26: Streptococcus parasuis sp. nov.

    Science.gov (United States)

    Nomoto, R; Maruyama, F; Ishida, S; Tohya, M; Sekizaki, T; Osawa, Ro

    2015-02-01

    In order to clarify the taxonomic position of serotypes 20, 22 and 26 of Streptococcus suis, biochemical and molecular genetic studies were performed on isolates (SUT-7, SUT-286(T), SUT-319, SUT-328 and SUT-380) reacted with specific antisera of serotypes 20, 22 or 26 from the saliva of healthy pigs as well as reference strains of serotypes 20, 22 and 26. Comparative recN gene sequencing showed high genetic relatedness among our isolates, but marked differences from the type strain S. suis NCTC 10234(T), i.e. 74.8-75.7 % sequence similarity. The genomic relatedness between the isolates and other strains of species of the genus Streptococcus, including S. suis, was calculated using the average nucleotide identity values of whole genome sequences, which indicated that serotypes 20, 22 and 26 should be removed taxonomically from S. suis and treated as a novel genomic species. Comparative sequence analysis revealed 99.0-100 % sequence similarities for the 16S rRNA genes between the reference strains of serotypes 20, 22 and 26, and our isolates. Isolate STU-286(T) had relatively high 16S rRNA gene sequence similarity with S. suis NCTC 10234(T) (98.8 %). SUT-286(T) could be distinguished from S. suis and other closely related species of the genus Streptococcus using biochemical tests. Due to its phylogenetic and phenotypic similarities to S. suis we propose naming the novel species Streptococcus parasuis sp. nov., with SUT-286(T) ( = JCM 30273(T) = DSM 29126(T)) as the type strain. © 2015 IUMS.

  8. Effect of nicotine on dual-species biofilms of Streptococcus mutans and Streptococcus sanguinis.

    Science.gov (United States)

    Li, Mingyun; Huang, Ruijie; Zhou, Xuedong; Zhang, Keke; Zheng, Xin; Gregory, Richard L

    2014-01-01

    Both Streptococcus mutans and Streptococcus sanguinis are normal bacterial inhabitants of dental plaque. Streptococcus mutans is the major agent causing dental caries. It has been well documented that nicotine affects the growth of S. mutans. This study investigated the effect of nicotine on mono- and dual-species growth of S. mutans and S. sanguinis. The results indicate that nicotine has no significant effect on S. sanguinis grown in either mono- or dual-species biofilms. However, nicotine significantly increased (P mutans in dual-species biofilm formation. In addition, the CFU level of S. sanguinis was higher than S. mutans without nicotine in the culture. With the addition of nicotine, the level of S. mutans biofilm was significantly enhanced as the nicotine concentration increased over the level of S. sanguinis in dual-species biofilm, and we also got the same result from the fluorescence in situ hybridization detecting the two bacteria grown in biofilm formation. The exopolysaccharide (EPS) of S. mutans has also been increased by the increasing nicotine concentration, while the EPS of S. sanguinis was decreased or inhibited by the affected nicotine. The data further confirm that nicotine is able to enhance the growth of S. mutans. © 2013 Federation of European Microbiological Societies. Published by John Wiley & Sons Ltd. All rights reserved.

  9. Prophage lysin Ply30 protects mice from Streptococcus suis and Streptococcus equi subsp. zooepidemicus infections.

    Science.gov (United States)

    Tang, Fang; Li, Dezhi; Wang, Haojin; Ma, Zhe; Lu, Chengping; Dai, Jianjun

    2015-11-01

    Streptococcus suis and Streptococcus equi subsp. zooepidemicus are capable of infecting humans and various animals, causing significant problems for the worldwide swine industry. As antibiotic resistance has increased, lysosomal enzymes encoded by phages have shown potential for use against pathogenic bacteria. In this study, a novel bacteriophage lysin, Ply30, encoded by the S. suis prophage phi30c, was recombinantly expressed and purified. Ply30 showed high bacteriolysis activity on S. suis and S. equi subsp. zooepidemicus in vitro. The ratio of the optical density at 600 nm (OD600) with treatment versus the OD600 with no treatment for most tested S. suis and S. equi subsp. zooepidemicus strains decreased from 1 to Streptococcus strains ranged from 16 to 512 μg/ml. In vivo, a 2-mg dose of Ply30 protected 90% (9/10 mice) of mice from infection with S. equi subsp. zooepidemicus and 80% (8/10 mice) of mice from infection with S. suis. Seven days after lysin Ply30 treatment, bacterial loads were significantly decreased in all tested organs and blood compared with those at 1 h postinfection without Ply30 treatment. Ply30 showed in vitro and in vivo antimicrobial efficiency and protected mice against two kinds of bacterial infections, indicating that Ply30 may be an effective therapeutic against streptococci. Copyright © 2015, American Society for Microbiology. All Rights Reserved.

  10. Prophage Lysin Ply30 Protects Mice from Streptococcus suis and Streptococcus equi subsp. zooepidemicus Infections

    Science.gov (United States)

    Tang, Fang; Li, Dezhi; Wang, Haojin; Ma, Zhe; Lu, Chengping

    2015-01-01

    Streptococcus suis and Streptococcus equi subsp. zooepidemicus are capable of infecting humans and various animals, causing significant problems for the worldwide swine industry. As antibiotic resistance has increased, lysosomal enzymes encoded by phages have shown potential for use against pathogenic bacteria. In this study, a novel bacteriophage lysin, Ply30, encoded by the S. suis prophage phi30c, was recombinantly expressed and purified. Ply30 showed high bacteriolysis activity on S. suis and S. equi subsp. zooepidemicus in vitro. The ratio of the optical density at 600 nm (OD600) with treatment versus the OD600 with no treatment for most tested S. suis and S. equi subsp. zooepidemicus strains decreased from 1 to Streptococcus strains ranged from 16 to 512 μg/ml. In vivo, a 2-mg dose of Ply30 protected 90% (9/10 mice) of mice from infection with S. equi subsp. zooepidemicus and 80% (8/10 mice) of mice from infection with S. suis. Seven days after lysin Ply30 treatment, bacterial loads were significantly decreased in all tested organs and blood compared with those at 1 h postinfection without Ply30 treatment. Ply30 showed in vitro and in vivo antimicrobial efficiency and protected mice against two kinds of bacterial infections, indicating that Ply30 may be an effective therapeutic against streptococci. PMID:26253669

  11. Transporte intra-hospitalar de pacientes sob ventilação invasiva: repercussões cardiorrespiratórias e eventos adversos Intrahospital transport of patients on invasive ventilation: cardiorespiratory repercussions and adverse events

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    Lea Tami Suzuki Zuchelo

    2009-04-01

    Full Text Available OBJETIVO: Verificar a ocorrência de alterações cardiorrespiratórias e identificar eventos adversos durante o transporte intra-hospitalar de pacientes sob ventilação invasiva. MÉTODOS: Estudo observacional prospectivo não-randomizado, conduzido em dois hospitais terciários, entre abril de 2005 e dezembro de 2006. Foram incluídos pacientes sob ventilação invasiva que necessitaram de transporte intra-hospitalar durante o período do estudo. Os critérios de exclusão foram: estar sob suspeita de morte encefálica; ter sido submetido a períodos de ventilação mecânica e de nebulização em tubo T; e ter sido transportado para o centro cirúrgico. Antes e após o transporte, os seguintes parâmetros foram avaliados: gasometria arterial, sinais vitais, uso de medicamentos através de uma bomba de infusão contínua, parâmetros do ventilador mecânico, duração do transporte, distância percorrida e número de profissionais envolvidos. RESULTADOS: Foram incluídos 48 pacientes, num total de 58 transportes. Observou-se alteração cardiorrespiratória importante em 39 transportes, totalizando 86 episódios, assim como 16 eventos adversos relacionados à falha de equipamento e falha da equipe, dentre eles problemas com baterias e falhas de comunicação. CONCLUSÕES: Durante o transporte intra-hospitalar de pacientes submetidos à ventilação invasiva, alterações cardiorrespiratórias foram frequentes (67,2%, e eventos adversos ocorreram em 75,7% dos transportes realizados.OBJECTIVE: To determine the occurrence of cardiorespiratory alterations and to identify adverse events during the intrahospital transport of patients on invasive ventilation. METHODS: A prospective observational non-randomized study was conducted at two tertiary hospitals between April of 2005 and December of 2006. We included patients on invasive ventilation who required intrahospital transport during the study period. Exclusion criteria were as follows: being

  12. Principios de la evaluación hemodinámica no invasiva con cardiografía de impedancia Principles of non-invasive hemodynamic assessment with impedance cardiography

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    Juan E Ochoa M

    2009-06-01

    Full Text Available La cardiografía de impedancia es una técnica no invasiva que permite una determinación rápida, continua y reproducible del gasto cardiaco latido a latido. Mide los cambios en la resistencia eléctrica del tórax que se producen por las variaciones en el volumen sanguíneo en la aorta durante el ciclo cardiaco. La medición continua del cambio en la impedancia o las fluctuaciones del volumen sanguíneo durante la sístole y la diástole, permite determinar el volumen latido, el gasto cardiaco, la contractilidad miocárdica y el contenido total de fluido del tórax. Entre las ventajas de esta técnica se incluyen su fácil implementación y asequibilidad, así como la posibilidad de ser realizada por prácticamente cualquier miembro del equipo de salud. La precisión de la cardiografía de impedancia ha sido validada en numerosos estudios en diferentes escenarios clínicos: hipertensión arterial, falla cardiaca, hipertensión pulmonar, optimización de la terapia de resincronización cardiaca y en pacientes críticos, situaciones en las que provee información sobre el estado hemodinámico sin los riesgos de otras técnicas invasivas o mínimamente invasivas. Es además un método de fácil aplicación y costo-efectivo para el diagnóstico y seguimiento de la respuesta a las intervenciones terapéuticas en múltiples patologías. La técnica representa así un cambio en los paradigmas del monitoreo hemodinámico.Impedance cardiography (ICG is a non-invasive technique that allows a rapid, continuous and reproducible beat-to-beat cardiac output estimation. This technique measures thoracic electrical resistance changes produced by variations in the blood volume in the aorta during the cardiac cycle. Continuous measurement of impedance changes or fluctuations of blood volume during systole and diastole allow the determination of stroke volume, cardiac output, myocardial contractility, and total thoracic fluid content. Between the advantages of

  13. Identification of Lipoprotein Homologues of Pneumococcal PsaA in the Equine Pathogens Streptococcus equi and Streptococcus zooepidemicus

    Science.gov (United States)

    Harrington, Dean J.; Greated, Joanne S.; Chanter, Neil; Sutcliffe, Iain C.

    2000-01-01

    Streptococcus equi and Streptococcus zooepidemicus are major etiological agents of upper and lower airway disease in horses. Despite the considerable animal suffering and economic burden associated with these diseases, the factors that contribute to the virulence of these equine pathogens have not been extensively investigated. Here we demonstrate the presence of a homologue of the Streptococcus pneumoniae PsaA protein in both of these equine pathogens. Inhibition of signal peptide processing by the antibiotic globomycin confirmed the lipoprotein nature of the mature proteins, and surface exposure was confirmed by their release from intact cells by mild trypsinolysis. PMID:10992520

  14. Identification of lipoprotein homologues of pneumococcal PsaA in the equine pathogens Streptococcus equi and Streptococcus zooepidemicus.

    Science.gov (United States)

    Harrington, D J; Greated, J S; Chanter, N; Sutcliffe, I C

    2000-10-01

    Streptococcus equi and Streptococcus zooepidemicus are major etiological agents of upper and lower airway disease in horses. Despite the considerable animal suffering and economic burden associated with these diseases, the factors that contribute to the virulence of these equine pathogens have not been extensively investigated. Here we demonstrate the presence of a homologue of the Streptococcus pneumoniae PsaA protein in both of these equine pathogens. Inhibition of signal peptide processing by the antibiotic globomycin confirmed the lipoprotein nature of the mature proteins, and surface exposure was confirmed by their release from intact cells by mild trypsinolysis.

  15. Streptococcus pneumoniae, mecanismos de resistencia antimicrobiana

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    Amauri Noda Albelo

    2011-09-01

    Full Text Available El Streptococcus pneumoniae, principal agente causal de la neumonía comunitaria, líder en la etiología de la otitis media y la meningitis, en las últimas 3 décadas ha incrementado, de manera importante, su resistencia a los agentes terapéuticos más utilizados, como los betalactámicos, macrólidos, azálidos y fluroquinolonas. La versatilidad adaptativa del microorganismo le ha permitido crear mecanismos capaces de sobreponerse a cualquiera de estas agresiones terapéuticas con un grado variable de eficacia. Se realiza una revisión de los mecanismos más importantes implicados en la adquisición de resistencia antimicrobiana por S. pneumoniae, y se precisan algunos de los factores de riesgo implicados en infección por S. pneumoniae resistente.

  16. Aeration sensitizes Streptococcus faecalis to hydroxyurea.

    Science.gov (United States)

    Lahti, R; Heinonen, J

    1979-01-01

    Hydroxyurea in up to 60 mM concentration did not inhibit growth or DNA synthesis in nonaerated cultures of Streptococcus faecalis ATCC 8043. In contrast, in cultures aerated by shaking already 1 mM hydroxyurea decreased the rate of net DNA synthesis and in higher concentrations of the drug the growth of the total cell mass also slowed down and the number of cells per chain increased from 1-2 to 10. The differential rate of DNA synthesis, but not the growth of the total cell mass, could be restored almost to the control level by adding thymidine to the medium. Thus there are at least two targets for hydroxyurea in the cells of S. faecalis grown in aerated cultures.

  17. Streptococcus pyogenes translocates across an epithelial barrier.

    Science.gov (United States)

    Sumitomo, Tomoko

    2017-01-01

    Streptococcus pyogenes is a β-hemolytic organism responsible for a wide variety of human diseases that commonly occur as self-limiting purulent diseases of the pharynx and skin. Although the occurrence of invasive infections by S. pyogenes is rare, mortality rates remain high even with progressive medical therapy. As a prerequisite for causing the severe invasive disease, S. pyogenes must invade underlying sterile tissues by translocating across the epithelial barrier. In this study, streptolysin S and SpeB were identified as the novel factors that facilitate bacterial translocation via degradation of intercellular junctions. Furthermore, we found that S. pyogenes exploits host plasminogen for acceleration of bacterial invasion into deeper tissues via tricellular tight junctions. Here, I would like to show our study on bacterial translocation across the epithelial barrier through paracellular route.

  18. Purpura Fulminans Secondary to Streptococcus pneumoniae Meningitis

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    Erick F. Alvarez

    2012-01-01

    Full Text Available Purpura fulminans (PF is a rare skin disorder with extensive areas of blueblack hemorrhagic necrosis. Patients manifest typical laboratory signs of disseminated intravascular coagulation (DIC. Our case describes a 37-year-old previously healthy man who presented with 3 days of generalized malaise, headache, vomiting, photophobia, and an ecchymotic skin rash. Initial laboratory workup revealed DIC without obvious infectious trigger including unremarkable cerebrospinal fluid (CSF biochemical analysis. There was further progression of the skin ecchymosis and multiorgan damage consistent with PF. Final CSF cultures revealed Streptococcus pneumoniae. Despite normal initial CSF biochemical analysis, bacterial meningitis should always be considered in patients with otherwise unexplained DIC as this may be an early manifestation of infection. PF is a clinical diagnosis that requires early recognition and prompt empirical treatment, especially, in patients with progressive altered mental status, ecchymotic skin rash, and DIC.

  19. Development of Streptococcus agalactiae vaccines for tilapia.

    Science.gov (United States)

    Liu, Guangjin; Zhu, Jielian; Chen, Kangming; Gao, Tingting; Yao, Huochun; Liu, Yongjie; Zhang, Wei; Lu, Chengping

    2016-12-21

    Vaccination is a widely accepted and effective method to prevent most pathogenic diseases in aquaculture. Various species of tilapia, especially Nile tilapia Oreochromis niloticus, are farmed worldwide because of their high consumer demand. Recently, the tilapia-breeding industry has been hampered by outbreaks of Streptococcus agalactiae infection, which cause high mortality and huge economic losses. Many researchers have attempted to develop effective S. agalactiae vaccines for tilapia. This review provides a summary of the different kinds of S. agalactiae vaccines for tilapia that have been developed recently. Among the various vaccine types, inactivated S. agalactiae vaccines showed superior protection efficiency when compared with live attenuated, recombinant and DNA vaccines. With respect to vaccination method, injecting the vaccine into tilapia provided the most effective immunoprotection. Freund's incomplete adjuvant appeared to be suitable for tilapia vaccines. Other factors, such as immunization duration and number, fish size and challenge dose, also influenced the vaccine efficacy.

  20. Systemic Moxifloxacin in Streptococcus viridans Endophthalmitis.

    Science.gov (United States)

    Nam, Ki Yup; Lee, Sang Joon; Kim, Jung Yeul

    2017-10-05

    To evaluate the effectiveness of prophylactic systemic moxifloxacin in a rabbit model of Streptococcus viridans (S. viridans) endophthalmitis. Animals (n=60) were divided into three groups. Intravenous moxifloxacin, vancomycin, normal saline was administered to 20 animals in each group and two hours later, 10 4 colony-forming units (CFU) of S. salivarius were intravitreally injected into the left eye. Intravenous antibiotics injection was repeated on days 1, 2, and 3 after inoculation. The clinical features, bacterial culture from vitreous aspirates of 10 eyes from each group were evaluated on days 1, 3, 5, and 7. On day 7, eyes for clinical feature examination were enucleated for histopathologic examination. Clinical scores and log 10 CFU/ml values were lower in moxifloxacin group on all examination days. Histopathologic examination showed less inflammation and relatively well-preserved retina in the moxifloxacin group. Systemic moxifloxacin may have a prophyactic effect for S. viridans endophthalmitis after intraocular procedure.

  1. Iatrogenic streptococcus salivarius meningitis: a case report

    Directory of Open Access Journals (Sweden)

    Kristina Praper

    2017-11-01

    Full Text Available We present a case of a 28-year-old patient who underwent spinal anaesthesia for caesarean section, and developed meningitis, Streptococcus salivarius was isolated in the cerebrospinal fluid. The Viridans streptococci are a part of a normal human mouth flora, therefore the patient most likely developed iatrogenic meningitis due to droplet transmission of bacteria intrathecally. We discuss etiology, pathogenesis, clinical presentation, diagnostic tools, treatment and prognosis of meningitis afer intrathecal procedures and we emphasize the importance of strict aseptic technique while performing neuraxial procedures. Iatrogenic meningitis should be considered as a possible differential diagnosis in patients who present with symptoms and signs of meningitis after neuraxial blockade.

  2. Association of Streptococcus equi with equine monocytes.

    Science.gov (United States)

    Mérant, Catherine; Sheoran, Abhineet; Timoney, John F

    2011-09-15

    Streptococcus equi (Se), the cause of equine strangles, is highly resistant to phagocytosis by neutrophils and is usually classified as an extracellular pathogen. Large numbers of the organism in tonsillar tissues during the acute phase of the disease are completely eliminated during convalescence by mechanisms not yet understood. In this study we demonstrate in an opsono-bactericidal assay and by cytometry and confocal microscopy that Se is interiorized and killed by equine blood monocytes. This finding supports the hypotheses that adaptive immune clearance is mediated by tonsillar macrophages and that macrophages monocytes could serve as a vehicle for transport from the tonsil to local lymph nodes. Copyright © 2011 Elsevier B.V. All rights reserved.

  3. Streptococcus zooepidemicus: an emerging canine pathogen.

    Science.gov (United States)

    Priestnall, Simon; Erles, Kerstin

    2011-05-01

    Streptococcus equi subsp. zooepidemicus (S. zooepidemicus) has caused several outbreaks of haemorrhagic pneumonia in dogs in recent years. This highly contagious and often fatal disease is characterised by sudden onset of clinical signs including pyrexia, dyspnoea and haemorrhagic nasal discharge. Post mortem examination typically reveals pulmonary haemorrhage and pleural effusion. Histopathology demonstrates fibrino-suppurative, necrotising and haemorrhagic pneumonia in most cases. The pathogenesis of S. zooepidemicus infection in dogs is incompletely understood. Bacterial virulence factors as well as host factors may contribute to the severe outcome. S. zooepidemicus occasionally causes zoonotic infections with potentially serious consequences. Canine vaccines for S. zooepidemicus are currently not available and prevention of the disease therefore relies on limiting bacterial spread by implementing stringent control measures in kennels. Further research, particularly sequence analysis of canine strains, is required to gain insights into epidemiology and pathogenesis of this emerging disease. Copyright © 2010 Elsevier Ltd. All rights reserved.

  4. The homodimeric GBS1074 from Streptococcus agalactiae

    International Nuclear Information System (INIS)

    Shukla, Anshuman; Pallen, Mark; Anthony, Mark; White, Scott A.

    2010-01-01

    The homodimeric nature of the ESAT-6 homologue GBS1074 and the potential for fibre-like assemblies are revealed by the 2 Å resolution crystal structure. ESAT-6 is a well characterized secreted protein from Mycobacterium tuberculosis and represents the archetype of the WXG100 family of proteins. Genes encoding ESAT-6 homologues have been identified in the genome of the human pathogen Streptococcus agalactiae; one of these genes, esxA, has been cloned and the recombinant protein has been crystallized. In contrast to M. tuberculosis ESAT-6, the crystal structure of GBS1074 reveals a homodimeric structure similar to homologous structures from Staphylococcus aureus and Helicobacter pylori. Intriguingly, GBS1074 forms elongated fibre-like assemblies in the crystal structure

  5. Biochemical and serological properties of Streptococcus uberis.

    Science.gov (United States)

    Lämmler, C

    1991-12-01

    The Strep-Zym identification system, a combination of 23 enzymatic tests, allowed a rapid biochemical characterization of Streptococcus uberis. The biochemical profiles of the S. uberis cultures clearly differed from those of S. agalactiae and S. dysgalactiae. Serological grouping of S. uberis revealed polysaccharide antigens of groups E, G, P and U. Some cultures of S. uberis demonstrated CAMP-like synergistic hemolytic activities on sheep blood agar and reacted specifically with the lectins of Helix pomatia and Dolichos biflorus. The occurrence of group polysaccharides, CAMP-like reactivities, and the lectin agglutination reactions were obviously not related to each other or to any of the biochemical properties. These reactions, possibly of importance as virulence factors, might serve as epidemiological markers.

  6. Diversity of human small intestinal Streptococcus and Veillonella populations

    NARCIS (Netherlands)

    Bogert, B. van den; Erkus, O.; Boekhorst, J.; Goffau, M. de; Smid, E.J.; Zoetendal, E.G.; Kleerebezem, M

    2013-01-01

    Molecular and cultivation approaches were employed to study the phylogenetic richness and temporal dynamics of Streptococcus and Veillonella populations in the small intestine. Microbial profiling of human small intestinal samples collected from four ileostomy subjects at four time points displayed

  7. Influenza A virus facilitates Streptococcus pneumoniae transmission and disease.

    NARCIS (Netherlands)

    Diavatopoulos, D.A.; Short, K.R.; Price, J.T.; Wilksch, J.J.; Brown, L.E.; Briles, D.E.; Strugnell, R.A.; Wijburg, O.L.

    2010-01-01

    Streptococcus pneumoniae (the pneumococcus) kills approximately 1.6 million people annually. Pneumococcal infections predominantly manifest as pneumonia, sepsis, meningitis, and otitis media. S. pneumoniae is also a member of the normal nasopharyngeal flora, colonizing up to 80% of children.

  8. Case Report of Necrotizing Fasciitis Associated with Streptococcus pneumoniae

    Directory of Open Access Journals (Sweden)

    Lei Jiao

    2016-01-01

    Full Text Available Necrotizing fasciitis, caused by Streptococcus pneumoniae, is an extremely rare and life-threatening bacterial soft tissue infection. We report a case of early necrotizing fasciitis associated with Streptococcus pneumoniae infection in a 26-year-old man who was immunocompromised with mixed connective tissue disease. The patient presented with acute, painful, erythematous, and edematous skin lesions of his right lower back, which rapidly progressed to the right knee. The patient underwent surgical exploration, and a diagnosis of necrotizing fasciitis was confirmed by pathological evidence of necrosis of the fascia and neutrophil infiltration in tissue biopsies. Cultures of fascial tissue biopsies and blood samples were positive for Streptococcus pneumoniae. To our knowledge, this is the first report of necrotizing fasciitis resulting from Streptococcus pneumoniae diagnosed at early phase; the patient recovered well without surgical debridement.

  9. The post-vaccine microevolution of invasive Streptococcus pneumoniae

    NARCIS (Netherlands)

    Cremers, A.J.H.; Mobegi, F.M.; Jonge, M.I. de; Hijum, S.A.F.T. van; Meis, J.F.; Hermans, P.W.M.; Ferwerda, G.; Bentley, S.D.; Zomer, A.L.

    2015-01-01

    The 7-valent pneumococcal conjugated vaccine (PCV7) has affected the genetic population of Streptococcus pneumoniae in pediatric carriage. Little is known however about pneumococcal population genomics in adult invasive pneumococcal disease (IPD) under vaccine pressure. We sequenced and serotyped

  10. Diversity of human small intestinal Streptococcus and Veillonella populations

    NARCIS (Netherlands)

    van den Bogert, Bartholomeus; Erkus, Oylum; Boekhorst, Jos; de Goffau, Marcus; Smid, Eddy J.; Zoetendal, Erwin G.; Kleerebezem, Michiel

    Molecular and cultivation approaches were employed to study the phylogenetic richness and temporal dynamics of Streptococcus and Veillonella populations in the small intestine. Microbial profiling of human small intestinal samples collected from four ileostomy subjects at four time points displayed

  11. Quantification of bovine oxylipids during intramammary Streptococcus uberis infection

    Science.gov (United States)

    Streptococcus uberis mastitis results in severe mammary tissue damage in dairy cows due to uncontrolled inflammation. Oxylipids are potent lipid mediators that orchestrate pathogen-induced inflammatory responses, however, changes in oxylipid biosynthesis during S. uberis mastitis are unknown. Thus, ...

  12. The changing epidemiology of group B streptococcus bloodstream infection

    DEFF Research Database (Denmark)

    Ballard, Mark S; Schønheyder, Henrik C; Knudsen, Jenny Dahl

    2016-01-01

    Background Population-based studies conducted in single regions or countries have identified significant changes in the epidemiology of invasive group B streptococcus (GBS) infection. However, no studies have concurrently compared the epidemiology of GBS infections among multiple different regions...

  13. Comparative genomics of the dairy isolate Streptococcus macedonicus ACA-DC 198 against related members of the Streptococcus bovis/Streptococcus equinus complex.

    Science.gov (United States)

    Papadimitriou, Konstantinos; Anastasiou, Rania; Mavrogonatou, Eleni; Blom, Jochen; Papandreou, Nikos C; Hamodrakas, Stavros J; Ferreira, Stéphanie; Renault, Pierre; Supply, Philip; Pot, Bruno; Tsakalidou, Effie

    2014-04-08

    Within the genus Streptococcus, only Streptococcus thermophilus is used as a starter culture in food fermentations. Streptococcus macedonicus though, which belongs to the Streptococcus bovis/Streptococcus equinus complex (SBSEC), is also frequently isolated from fermented foods mainly of dairy origin. Members of the SBSEC have been implicated in human endocarditis and colon cancer. Here we compare the genome sequence of the dairy isolate S. macedonicus ACA-DC 198 to the other SBSEC genomes in order to assess in silico its potential adaptation to milk and its pathogenicity status. Despite the fact that the SBSEC species were found tightly related based on whole genome phylogeny of streptococci, two distinct patterns of evolution were identified among them. Streptococcus macedonicus, Streptococcus infantarius CJ18 and Streptococcus pasteurianus ATCC 43144 seem to have undergone reductive evolution resulting in significantly diminished genome sizes and increased percentages of potential pseudogenes when compared to Streptococcus gallolyticus subsp. gallolyticus. In addition, the three species seem to have lost genes for catabolizing complex plant carbohydrates and for detoxifying toxic substances previously linked to the ability of S. gallolyticus to survive in the rumen. Analysis of the S. macedonicus genome revealed features that could support adaptation to milk, including an extra gene cluster for lactose and galactose metabolism, a proteolytic system for casein hydrolysis, auxotrophy for several vitamins, an increased ability to resist bacteriophages and horizontal gene transfer events with the dairy Lactococcus lactis and S. thermophilus as potential donors. In addition, S. macedonicus lacks several pathogenicity-related genes found in S. gallolyticus. For example, S. macedonicus has retained only one (i.e. the pil3) of the three pilus gene clusters which may mediate the binding of S. gallolyticus to the extracellular matrix. Unexpectedly, similar findings were

  14. Tigecycline (GAR-936) activity against Streptococcus gallolyticus (bovis) and viridans group streptococci.

    Science.gov (United States)

    Moet, Gary J; Dowzicky, Michael J; Jones, Ronald N

    2007-03-01

    Viridans group streptococci including Streptococcus gallolyticus (formerly S. bovis) represent serious invasive pathogens often associated with endocarditis or sepsis among immunocompromised or cancer patients. Tigecycline (GAR-936), the first clinically studied glycylcycline, has a potent gram-positive activity with a potential treatment option for these streptococcal infections. The studied collection (848 strains) included 100 isolates each of Streptococcus anginosus, Streptococcus constellatus, Streptococcus intermedius, Streptococcus mitis, Streptococcus oralis, Streptococcus salivarius, Streptococcus sanguis, and fewer strains of S. gallolyticus (98 strains) and Streptococcus mutans (50 strains). These strains were isolated from patients on 3 continents in the SENTRY Antimicrobial Surveillance Program and tested for susceptibility and interpreted by Clinical and Laboratory Standards Institute broth microdilution methods and criteria (viridans group streptococci species and S. gallolyticus with an overall MIC90 at < or = 0.06 microg/mL; the highest MIC was only 0.25 microg/mL.

  15. Mechanisms of genome evolution of Streptococcus.

    Science.gov (United States)

    Andam, Cheryl P; Hanage, William P

    2015-07-01

    The genus Streptococcus contains 104 recognized species, many of which are associated with human or animal hosts. A globally prevalent human pathogen in this group is Streptococcus pneumoniae (the pneumococcus). While being a common resident of the upper respiratory tract, it is also a major cause of otitis media, pneumonia, bacteremia and meningitis, accounting for a high burden of morbidity and mortality worldwide. Recent findings demonstrate the importance of recombination and selection in driving the population dynamics and evolution of different pneumococcal lineages, allowing them to successfully evade the impacts of selective pressures such as vaccination and antibiotic treatment. We highlight the ability of pneumococci to respond to these pressures through processes including serotype replacement, capsular switching and horizontal gene transfer (HGT) of antibiotic resistance genes. The challenge in controlling this pathogen also lies in the exceptional genetic and phenotypic variation among different pneumococcal lineages, particularly in terms of their pathogenicity and resistance to current therapeutic strategies. The widespread use of pneumococcal conjugate vaccines, which target only a small subset of the more than 90 pneumococcal serotypes, provides us with a unique opportunity to elucidate how the processes of selection and recombination interact to generate a remarkable level of plasticity and heterogeneity in the pneumococcal genome. These processes also play an important role in the emergence and spread of multi-resistant strains, which continues to pose a challenge in disease control and/or eradication. The application of population of genomic approaches at different spatial and temporal scales will help improve strategies to control this global pathogen, and potentially other pathogenic streptococci. Copyright © 2014 The Authors. Published by Elsevier B.V. All rights reserved.

  16. Osteossíntese minimamente invasiva com placa bloqueada (Mipo sem a utilização de intensificadores de imagem nas fraturas de tíbia em cães

    Directory of Open Access Journals (Sweden)

    N.M. Rosa-Ballaben

    Full Text Available RESUMO Avanços na compreensão da biologia óssea e das complicações das fraturas têm levado a modificações na abordagem da fixação interna, sendo a osteossíntese minimamente invasiva com placa (Mipo uma das recentes evoluções para o manejo biológico das fraturas. O objetivo do presente estudo foi avaliar o uso de placas bloqueadas aplicadas de forma minimante invasivas em fraturas da tíbia de cães, sem a utilização de intensificadores de imagem intraoperatória. Foram utilizados 10 cães que apresentavam fraturas da tíbia, de idades e raças variadas. Os animais foram avaliados quanto à deambulação, à intensidade do edema, e exames radiográficos foram realizados nos períodos zero, 15, 30, 60, 90 e 120 dias de pós-operatório. Após 15 dias de pós-operatório, 80% dos cães já utilizavam o membro ao caminhar e apresentavam formação de edema discreto a ausente no membro operado. Após 30 dias de pós-operatório, todos os cães já apoiavam o membro ao caminhar e não apresentavam formação de edema. Todos os pacientes apresentaram sinais radiográficos de início de consolidação óssea após 15 dias de pós-operatório e pôde-se observar que a união clínica ocorreu em média aos 42,5 dias. O tratamento de fraturas de tíbia por meio da Mipo é alternativa eficaz, resultando em utilização precoce do membro e união clínica efetiva, e pode ser realizado sem uso de intensificadores de imagem.

  17. RENOVANDO A TRADIÇÃO PELOS CAMINHOS DA INTERTEXTUALIDADE

    Directory of Open Access Journals (Sweden)

    Alba Olmi

    2007-08-01

    Full Text Available A revisão e a subversão dos contos de fadas e de outros textos canônicos realizadas por Angela Carter, Stevie Smith, Liz Lochhead e Anne Sexton, entre outras, se constituem na desconstrução/reconstrução da narrativa masculina através da qual é conferida uma nova forma literária, mas também uma nova voz à figura da mulher. Através da transposição diegética e da paródia, vão se modificando diversos elementos presentes na narrativa dos contos de fada tradicionais e de outros textos “canônicos”, o que produz uma transvalorização, isto é, uma transformação de natureza axiológica de seu primitivo horizonte cultural e de sentido. Essa revisão envolve também o nível lingüístico e as estruturas superficiais, porém sem nunca perder de vista a relação intertextual com os textos originais, questionando preconceitos e discriminação da figura feminina. Isso vem demonstrar que as mulheres estão criando uma literatura própria na qual histórias de mulheres são narradas do ponto de vista feminino.Transcendendo o sistema dicotômico-binário de gênero, que produziu relações seculares e históricas de poder, a escritura feminina reconstrói o conceito de diferença e de sujeito, provocando a ruptura do discurso hegemônico masculino, conferindo novo significado ao conceito de cultura. Observa-se, ainda, que o objetivo maior dessas re-escrituras não é simplesmente demolir uma tradição que perpetuou mitos e ideais patriarcais, mas evidenciar seus limites, suas lacunas e seus desvios, a fim de permitir que a tradição se renove, satisfazendo assim a dupla exigência de revisão e de continuidade em relação ao passado, pelos amplos caminhos da intertextualidade.

  18. Streptococcus sinensis may react with Lancefield group F antiserum.

    Science.gov (United States)

    Woo, Patrick C Y; Teng, Jade L L; Leung, Kit-wah; Lau, Susanna K P; Tse, Herman; Wong, Beatrice H L; Yuen, Kwok-yung

    2004-11-01

    Lancefield group F streptococci have been found almost exclusively as members of the 'Streptococcus milleri' group, although they have been reported very occasionally in some other streptococcal species. Among 302 patients with bacteraemia caused by viridans streptococci over a 6-year period, three cases were caused by Streptococcus sinensis (type strain HKU4T, HKU5 and HKU6). All three patients had infective endocarditis complicating their underlying chronic rheumatic heart diseases. Gene sequencing showed no base differences between the 16S rRNA gene sequences of HKU5 and HKU6 and that of HKU4T. All three strains were Gram-positive, non-spore-forming cocci arranged in chains. All grew on sheep blood agar as alpha-haemolytic, grey colonies of 0.5-1 mm in diameter after 24 h incubation at 37 degrees C in ambient air. Lancefield grouping revealed that HKU5 and HKU6 were Lancefield group F, but HKU4T was non-groupable with Lancefield groups A, B, C, D, F or G antisera. HKU4T was identified by the Vitek system (GPI), API system (20 STREP) and ATB system (ID32 STREP) as 99 % Streptococcus intermedius, 51.3 % S. intermedius and 99.9 % Streptococcus anginosus, respectively. Using the same tests, HKU5 was identified as 87 % Streptococcus sanguinis/Streptococcus gordonii, 59 % Streptococcus salivarius and 99.6 % S. anginosus, respectively, and HKU6 as 87 % S. sanguinis/S. gordonii, 77 % Streptococcus pneumoniae and 98.3 % S. anginosus, respectively. The present data revealed that a proportion of Lancefield group F streptococci could be S. sinensis. Lancefield group F streptococci should not be automatically reported as 'S. milleri'.

  19. Molecular characterization of virulence genes of Streptococcus equi subsp. equi and Streptococcus equi subsp. zooepidemicus in equines

    OpenAIRE

    R. Javed; A. K. Taku; Rakhi Gangil; R. K. Sharma

    2016-01-01

    Aim: The aim was to determine the occurrence of streptococci in equines in Jammu (R. S. Pura, Katra), characterization of Streptococci equi subsp. equi and Streptococcus equi subsp. zooepidemicus with respect to their virulence traits and to determine antibiotic sensitivity pattern of virulent Streptococcus isolates. Materials and Methods: A total of 96 samples were collected from both clinically affected animals (exhibiting signs of respiratory tract disease) and apparently healthy animals a...

  20. Development of Primer Sets for Loop-Mediated Isothermal Amplification that Enables Rapid and Specific Detection of Streptococcus dysgalactiae, Streptococcus uberis and Streptococcus agalactiae

    Directory of Open Access Journals (Sweden)

    Deguo Wang

    2015-05-01

    Full Text Available Streptococcus dysgalactiae, Streptococcus uberis and Streptococcus agalactiae are the three main pathogens causing bovine mastitis, with great losses to the dairy industry. Rapid and specific loop-mediated isothermal amplification methods (LAMP for identification and differentiation of these three pathogens are not available. With the 16S rRNA gene and 16S-23S rRNA intergenic spacers as targets, four sets of LAMP primers were designed for identification and differentiation of S. dysgalactiae, S. uberis and S. agalactiae. The detection limit of all four LAMP primer sets were 0.1 pg DNA template per reaction, the LAMP method with 16S rRNA gene and 16S-23S rRNA intergenic spacers as the targets can differentiate the three pathogens, which is potentially useful in epidemiological studies.

  1. Development of Primer Sets for Loop-Mediated Isothermal Amplification that Enables Rapid and Specific Detection of Streptococcus dysgalactiae, Streptococcus uberis and Streptococcus agalactiae.

    Science.gov (United States)

    Wang, Deguo; Liu, Yanhong

    2015-05-26

    Streptococcus dysgalactiae, Streptococcus uberis and Streptococcus agalactiae are the three main pathogens causing bovine mastitis, with great losses to the dairy industry. Rapid and specific loop-mediated isothermal amplification methods (LAMP) for identification and differentiation of these three pathogens are not available. With the 16S rRNA gene and 16S-23S rRNA intergenic spacers as targets, four sets of LAMP primers were designed for identification and differentiation of S. dysgalactiae, S. uberis and S. agalactiae. The detection limit of all four LAMP primer sets were 0.1 pg DNA template per reaction, the LAMP method with 16S rRNA gene and 16S-23S rRNA intergenic spacers as the targets can differentiate the three pathogens, which is potentially useful in epidemiological studies.

  2. Micromorfologia de pelos aristiformes de roedores das Famílias Cricetidae e Echimyidae (Mammalia, Rodentia)

    OpenAIRE

    Duarte, Tarcísio de Souza

    2013-01-01

    A tricotaxonomia é ramo da ciência que utiliza os padrões micromorfológicos dos pelos aplicados na identificação de espécies. Tal técnica tem sido muito útil no levantamentos de fauna, estudos de ecologia alimentar, análises forenses, entre outros. Dentre os diversos tipos de pelos, os chamados aristiformes são típicos de roedores das famílias Echimyidae, Cricetidae, Heteromyidae e Erethizonthidae. Este tipo de pelo é pouco estudado,limitando-se a alguns trabalhos com microscopia eletrônica d...

  3. Understanding the bacterial polysaccharide antigenicity of Streptococcus agalactiae versus Streptococcus pneumoniae.

    Science.gov (United States)

    Kadirvelraj, Renuka; Gonzalez-Outeiriño, Jorge; Foley, B Lachele; Beckham, Meredith L; Jennings, Harold J; Foote, Simon; Ford, Michael G; Woods, Robert J

    2006-05-23

    Bacterial surface capsular polysaccharides (CPS) that are similar in carbohydrate sequence may differ markedly in immunogenicity and antigenicity. The structural origin of these phenomena is poorly understood. Such a case is presented by the Gram-positive bacteria Streptococcus agalactiae (Group B Streptococcus; GBS) type III (GBSIII) and Streptococcus pneumoniae (Pn) type 14 (Pn14), which share closely related CPS sequences. Nevertheless, antibodies (Abs) against GBSIII rarely cross-react with the CPS from Pn14. To establish the origin for the variation in CPS antigenicity, models for the immune complexes of CPS fragments from GBSIII and Pn14, with the variable fragment (Fv) of a GBS-specific mAb (mAb 1B1), are presented. The complexes are generated through a combination of comparative Ab modeling and automated ligand docking, followed by explicitly solvated 10-ns molecular dynamics simulations. The relationship between carbohydrate sequence and antigenicity is further quantified through the computation of interaction energies using the Molecular Mechanics-Generalized Born Surface Area (MM-GBSA) method, augmented by conformational entropy estimates. Despite the electrostatic differences between Pn14 and GBSIII CPS, analysis indicates that entropic penalties are primarily responsible for the loss of affinity of the highly flexible Pn14 CPS for mAb 1B1. The similarity of the solution conformation of the relatively rigid GBSIII CPS with that in the immune complex characterizes the previously undescribed 3D structure of the conformational epitope. The analysis provides a comprehensive interpretation for a large body of biochemical and immunological data related to Ab recognition of bacterial polysaccharides and should be applicable to other Ab-carbohydrate interactions.

  4. Parallel evolution of Streptococcus pneumoniae and Streptococcus mitis to pathogenic and mutualistic lifestyles.

    Science.gov (United States)

    Kilian, Mogens; Riley, David R; Jensen, Anders; Brüggemann, Holger; Tettelin, Hervé

    2014-07-22

    The bacterium Streptococcus pneumoniae is one of the leading causes of fatal infections affecting humans. Intriguingly, phylogenetic analysis shows that the species constitutes one evolutionary lineage in a cluster of the otherwise commensal Streptococcus mitis strains, with which humans live in harmony. In a comparative analysis of 35 genomes, including phylogenetic analyses of all predicted genes, we have shown that the pathogenic pneumococcus has evolved into a master of genomic flexibility while lineages that evolved into the nonpathogenic S. mitis secured harmonious coexistence with their host by stabilizing an approximately 15%-reduced genome devoid of many virulence genes. Our data further provide evidence that interspecies gene transfer between S. pneumoniae and S. mitis occurs in a unidirectional manner, i.e., from S. mitis to S. pneumoniae. Import of genes from S. mitis and other mitis, anginosus, and salivarius group streptococci ensured allelic replacements and antigenic diversification and has been driving the evolution of the remarkable structural diversity of capsular polysaccharides of S. pneumoniae. Our study explains how the unique structural diversity of the pneumococcal capsule emerged and conceivably will continue to increase and reveals a striking example of the fragile border between the commensal and pathogenic lifestyles. While genomic plasticity enabling quick adaptation to environmental stress is a necessity for the pathogenic streptococci, the commensal lifestyle benefits from stability. Importance: One of the leading causes of fatal infections affecting humans, Streptococcus pneumoniae, and the commensal Streptococcus mitis are closely related obligate symbionts associated with hominids. Faced with a shortage of accessible hosts, the two opposing lifestyles evolved in parallel. We have shown that the nonpathogenic S. mitis secured harmonious coexistence with its host by stabilizing a reduced genome devoid of many virulence genes

  5. Características laboratoriais das ceratites e conjuntivites causadas por Streptococcus sp Laboratorial findings of Streptococcus keratitis and conjunctivitis

    Directory of Open Access Journals (Sweden)

    Helena Parente Solari

    2004-10-01

    Full Text Available OBJETIVOS: Analisar os resultados laboratoriais de conjuntivites e ceratites com cultura positiva para Streptococcus sp, avaliando a incidência das diferentes espécies e os dados dos antibiogramas. MÉTODOS: Estudo retrospectivo de revisão de prontuários de pacientes encaminhados ao laboratório de Doenças Externas do Departamento de Oftalmologia da UNIFESP com resultado de cultivo bacteriano positivo de córnea ou conjuntiva e com identificação de alguma cepa do gênero Streptococcus sp, no período de janeiro de 1995 a dezembro de 2001. Analisou-se idade do paciente, espécie de Streptococcus e os testes de sensibilidade aos seguintes antibióticos: cefalotina, amicacina, gentamicina, tobramicina, ciprofloxacina, lomefloxacina, ofloxacina, norfloxacina e vancomicina. RESULTADOS: As espécies mais encontradas foram Streptococcus pneumoniae e Streptococcus viridans. Com relação aos antibióticos, a sensibilidade foi maior à cefalotina, às quinolonas e à vancomicina. CONCLUSÕES: Considerando-se os antibióticos tópicos comercialmente disponíveis, as quinolonas apresentam melhor espectro de ação quando comparadas aos aminoglicosídios.PURPOSE: To evaluate laboratorial findings of Streptococcus keratitis and conjunctivitis, analyzing the different species and the results of bacterial susceptibility to an antibiotics. METHODS: Retrospective study of the records from the External Disease Laboratory of the Ophthalmology Department of the Federal University of São Paulo, with conjunctival or corneal positive bacterial culture for Streptococcus sp, between January 1995 and December 2001. The collected data were age, Streptococcus species and the bacterial susceptibility to the following antibiotics: cephalotin, amikacin, gentamicin, tobramicin, ciprofloxacin, lomefloxacin, ofloxacin, norfloxacin and vancomicin. RESULTS: The most frequent species were Streptococcus pneumoniae and Streptococcus viridans. Regarding bacterial

  6. Molecular and mathematical epidemiology of Staphylococcus aureus and Streptococcus uberis mastitis in dairy herds

    NARCIS (Netherlands)

    Zadoks, Ruth Nicolet

    2002-01-01

    Mastitis is the most common and costly production disease affecting dairy cows. Staphylococcus aureus and Streptococcus uberis are two major mastitis-causing pathogens. Staphylococcus aureus is traditionally classified as contagious pathogen, while Streptococcus uberis is classified as environmental

  7. Capsular typing of Streptococcus agalactiae (Lancefield group B streptococci) from fish using multiplex PCR and serotyping

    Science.gov (United States)

    Streptococcus spp. including Streptococcus agalactiae (Lancefield group B streptococci) are considered emerging pathogens responsible for approximately $1 billion USD in annual losses to the global tilapia (Oreochromis sp.) aquaculture industry. This study evaluated a published multiplex PCR capsul...

  8. Prevenindo pneumonia nosocomial: cuidados da equipe de saúde ao paciente em ventilação mecânica invasiva

    Directory of Open Access Journals (Sweden)

    Izaura Luzia Silvério Freire

    2006-12-01

    Full Text Available Estudo exploratório e descritivo de abordagem quantitativa, realizado na Urgência e UTI, com vistas a identificar os cuidados prestados pelos profissionais e a associação entre a VM e o aparecimento de pneumonia. A população foi de 68 profissionais. Dos 38 pacientes intubados, 17 foram a óbito e 4 extubados antes de completarem 48 horas; 13 tiveram diagnóstico de PAVM, 4 com 72 horas e 9 após esse período. Feito cultura de secreção traqueal em 10 pacientes cuja etiologia mais freqüente foi a Pseudomonas aureus. Quanto aos cuidados realizados antes da VM nos ventiladores mecânicos, circuitos respiratórios e umidificadores, em 25 não foram realizadas a limpeza e desinfecção; 21 foram montados sem técnica asséptica; no momento da instalação o ventilador foi testado 26 vezes com pulmão não estéril; o condensado, presente em 87 vezes foi descartado em 70; 52 vezes os profissionais não lavaram as mãos após esse procedimento; em 11 das 17 intubações, o médico não lavou as mãos antes; nenhum utilizou EPI; das 313 aspirações, em 249 as mãos não foram lavadas antes; das 176 dietas introduzidas, em 141 vezes não houve interrupção durante a aspiração; 232 vezes o soro fisiológico estava estéril; em menos da metade, as mãos foram lavadas após; a fisioterapia respiratória foi realizada 70 vezes e desses, em 45, os profissionais não realizaram lavagem prévia das mãos; 33 não interromperam a dieta. Predominou a mudança de decúbito no horário da manhã. Concluímos que dos 17 pacientes que permaneceram no estudo, 13 tiveram diagnóstico de PAVM entre 48 e após 72 horas de uso da VM e os dados obtidos nas observações estruturadas sinalizam para o risco desses pacientes terem PAVM.

  9. Efflux inhibitor suppresses Streptococcus mutans virulence properties.

    Science.gov (United States)

    Zeng, Huihui; Liu, Jia; Ling, Junqi

    2017-04-01

    It is well established that efflux pumps play important roles in bacterial pathogenicity and efflux inhibitors (EIs) have been proved to be effective in suppressing bacterial virulence properties. However, little is known regarding the EI of Streptococcus mutans, a well-known caries-inducing bacterium. In this study, we identified the EI of S. mutans through ethidium bromide efflux assay and investigated how EI affected S. mutans virulence regarding the cariogenicity and stress response. Results indicated that reserpine, the identified EI, suppressed acid tolerance, mutacin production and transformation efficiency of S. mutans, and modified biofilm architecture and extracellular polysaccharide distribution. Suppressed glycosyltransferase activity was also noted after reserpine exposure. The data from quantitative real-time-PCR demonstrated that reserpine significantly altered the expression profile of quorum-sensing and virulence-associated genes. These findings suggest that reserpine represents a promising adjunct anticariogenic agent in that it suppresses virulence properties of S. mutans. © FEMS 2017. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  10. [Streptococcus salivarius meningitis after spinal anesthesia].

    Science.gov (United States)

    Conangla, G; Rodríguez, L; Alonso-Tarrés, C; Avila, A; de la Campa, A G

    2004-01-01

    Streptococcus salivarius is a usual commensal of skin, gastrointestinal tract, genitourinary tract, oral cavity and paranasal sinuses. Although it is usually considered to have low virulence, S. salivarius may cause life-threatening infections, particularly endocarditis. On the other hand, bacterial meningitis after spinal anesthesia is very rare, there being some reported cases caused by S. salivarius, S. mitis, Staphylococcus aureus and Enterococcus faecalis. We report a 57 year old man who developed meningitis symptoms within 10 h of an uncomplicated inguinal herniorrhaphy performed during spinal anesthesia. Cerebrospinal cultures grew S. salivarius sensitive to penicillin. The patient was successfully treated with penicillin G and left the hospital without sequelae. In the literature, bacterial meningitis due to S. salivarius is rarely reported. Of the 28 cases, 18 occurred after lumbar puncture for diagnostic or for spinal anesthesia, 5 occurred following a bacteriemia for upper gastrointestinal endoscopy or intestinal neoplasia, and the other 5 in patients who had dural defects. We discuss the possible etiological causes of the meningitis due to S. salivarius cases reports. The early recognition of this entity and the aseptic precautions likely to reduce the incidence of infectious complications after lumbar puncture are stressed.

  11. Unit cell hypothesis for Streptococcus faecalis.

    Science.gov (United States)

    Edelstein, E M; Rosenzweig, M S; Daneo-Moore, L; Higgins, M L

    1980-07-01

    The mass doubling times of exponential-phase cultures of Streptococcus faecalis were varied from 30 to 110 min by omitting glutamine from a defined growth medium and providing different concentrations of glutamate (ranging from 300 to 14 mug/ml). After Formalin fixation, cells were dried by the critical point method, and carbon-platinum replicas were prepared. The surface area and volume of cell poles seen in these replicas were estimated by a computer-assisted, three-dimensional reconstruction technique. It was found that the amount of surface area and volume of poles seen in these replicas were independent of the growth rate of culture from which the samples were taken. These observations were consistent with the unit cell model hypothesis of Donachie and Begg, in which a small number of surface sites would produce a constant amount of new cell surface regardless of the mass doubling time of the culture. However, measurements of the thickness of the cell wall taken from thin sections of the same cells showed that the cell wall increased in thickness as a function of the increase in cellular peptidoglycan content which occurs when the growth rate of this organism is slowed down by a decrease in glutamate concentration. Thus, it would seem that although the size of polar shells made by S. faecalis is invariant with growth rate, the amount of wall precursors used to construct these shells is not.

  12. Sodium-stimulated ATPase in Streptococcus faecalis.

    Science.gov (United States)

    Kinoshita, N; Unemoto, T; Kobayashi, H

    1984-06-01

    We measured Na+-stimulated ATPase activity in a mutant of Streptococcus faecalis defective in the generation of proton motive force. The activity in membrane vesicles was 62.1 +/- 5.9 nmol of phosphate produced per min per mg of protein when cells were grown on medium containing 0.12 M Na+. Activity decreased as the concentration of Na+ in the growth medium decreased. The decrease in enzyme activity corresponded to the decrease in transport activity for Na+ in both whole cells and membrane vesicles. The effects of pH on both activities were identical. Thus, it is suggested that Na+ movement is mediated by this enzyme. Sodium extrusion and ATPase activity in the wild-type strain were markedly lower than those observed in the mutant strain. Elevated activities of both Na+ extrusion and Na+-stimulated ATPase could be detected in the wild-type strain when cells were grown in the absence of proton motive force. Thus, we propose that the level of ATPase is increased by dissipation of the proton motive force.

  13. Thermal injury and recovery of Streptococcus faecalis.

    Science.gov (United States)

    Clark, C W; Witter, L D; Ordal, Z J

    1968-11-01

    Exposure of Streptococcus faecalis R57 to sublethal heating produced a temporary change in the salt tolerance and growth of the organism. After sublethal heat treatment at 60 C for 15 min, greater than 99.0% of the viable population was unable to reproduce on media containing 6% NaCl. In addition, the heated cells displayed a sensitivity to incubation temperature, pH, and 0.01% methylene blue. When the injured cells were placed in a synthetic medium, recovery occurred at a much slower rate than in a complex medium. However, both media supported comparable growth of the uninjured organism. Various media used for the enrichment of streptococci also provided a suitable environment for the recovery of the injured cells. Generally, as more selective agents were present in the medium, the rates of recovery decreased. Metabolic inhibitor studies with chloramphenicol, penicillin, and actinomycin D substantiated the fact that the process involved was recovery and not growth, and that this recovery was linked to ribonucleic acid synthesis.

  14. Molecular typing of Chinese Streptococcus pyogenes isolates.

    Science.gov (United States)

    You, Yuanhai; Wang, Haibin; Bi, Zhenwang; Walker, Mark; Peng, Xianhui; Hu, Bin; Zhou, Haijian; Song, Yanyan; Tao, Xiaoxia; Kou, Zengqiang; Meng, Fanliang; Zhang, Menghan; Bi, Zhenqiang; Luo, Fengji; Zhang, Jianzhong

    2015-06-01

    Streptococcus pyogenes causes human infections ranging from mild pharyngitis and impetigo to serious diseases including necrotizing fasciitis and streptococcal toxic shock syndrome. The objective of this study was to compare molecular emm typing and pulsed field gel electrophoresis (PFGE) with multiple-locus variable-number tandem-repeat analysis (MLVA) for genotyping of Chinese S. pyogenes isolates. Molecular emm typing and PFGE were performed using standard protocols. Seven variable number tandem repeat (VNTR) loci reported in a previous study were used to genotype 169 S. pyogenes geographically-diverse isolates from China isolated from a variety of disease syndromes. Multiple-locus variable-number tandem-repeat analysis provided greater discrimination between isolates when compared to emm typing and PFGE. Removal of a single VNTR locus (Spy2) reduced the sensitivity by only 0.7%, which suggests that Spy2 was not informative for the isolates screened. The results presented support the use of MLVA as a powerful epidemiological tool for genotyping S. pyogenes clinical isolates. Copyright © 2015 Elsevier Ltd. All rights reserved.

  15. Disinfection of toothbrushes contaminated with Streptococcus mutans.

    Science.gov (United States)

    Bélanger-Giguère, Kim; Giguère, Steeve; Bélanger, Myriam

    2011-06-01

    To determine the most effective method to kill Streptococcus mutans on contaminated toothbrushes. Seven toothbrushes (one for each treatment and the control) were contaminated with S. mutans. Toothbrushes were then rinsed in phosphate buffered saline (PBS) and treated as follows: (1) control without treatment; (2) air dry for 4 hours; (3) Crest Pro-Health mouthwash for 20 minutes; (4) Listerine mouthwash for 20 minutes; (5) normal cleaning cycle in a dishwasher; (6) microwave on high power for 5 minutes; and (7) ultraviolet light using the DenTek Toothbrush Sanitizer for 10 minutes. All toothbrushes were rinsed again with PBS. The bristles were cut and vortexed in PBS. Serial dilutions were performed and the number of colonies enumerated after incubation. The experiment was independently repeated seven times. The Crest Pro-Health mouthwash and the dishwasher almost completely eliminated S. mutans. The second most effective treatment was the microwave. The Listerine mouthwash and the air dry groups were not significantly different from each other and ranked third. Although UV light significantly decreased the number of bacteria compared to the control, reduction in the number of S. mutans CFU was significantly lower than that of all the other treatments evaluated. Crest Pro-Health mouthwash for 20 minutes and a normal dishwasher cycle are the most effective methods to eradicate S. mutans from contaminated toothbrushes. Dent

  16. Parallel Evolution in Streptococcus pneumoniae Biofilms.

    Science.gov (United States)

    Churton, Nicholas W V; Misra, Raju V; Howlin, Robert P; Allan, Raymond N; Jefferies, Johanna; Faust, Saul N; Gharbia, Saheer E; Edwards, Richard J; Clarke, Stuart C; Webb, Jeremy S

    2016-05-09

    Streptococcus pneumoniae is a commensal human pathogen and the causative agent of various invasive and noninvasive diseases. Carriage of the pneumococcus in the nasopharynx is thought to be mediated by biofilm formation, an environment where isogenic populations frequently give rise to morphological colony variants, including small colony variant (SCV) phenotypes. We employed metabolic characterization and whole-genome sequencing of biofilm-derived S. pneumoniae serotype 22F pneumococcal SCVs to investigate diversification during biofilm formation. Phenotypic profiling revealed that SCVs exhibit reduced growth rates, reduced capsule expression, altered metabolic profiles, and increased biofilm formation compared to the ancestral strain. Whole-genome sequencing of 12 SCVs from independent biofilm experiments revealed that all SCVs studied had mutations within the DNA-directed RNA polymerase delta subunit (RpoE). Mutations included four large-scale deletions ranging from 51 to 264 bp, one insertion resulting in a coding frameshift, and seven nonsense single-nucleotide substitutions that result in a truncated gene product. This work links mutations in the rpoE gene to SCV formation and enhanced biofilm development in S. pneumoniae and therefore may have important implications for colonization, carriage, and persistence of the organism. Furthermore, recurrent mutation of the pneumococcal rpoE gene presents an unprecedented level of parallel evolution in pneumococcal biofilm development. © The Author(s) 2016. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.

  17. Ornithine transport and exchange in Streptococcus lactis

    International Nuclear Information System (INIS)

    Thompson, J.

    1987-01-01

    Resting cells of Streptococcus lactis 133 appeared to accumulate [ 14 C]ornithine to a high concentration in the absence of an exogenous energy source. However, analysis of intracellular amino acid pool constituents and results of transport experiments revealed that the accumulation of ornithine represented a homoexchange between extracellular [ 14 C]ornithine and unlabeled ornithine in the cell. The energy-independent exchange of ornithine was not inhibited by proton-conducting uncouplers or by metabolic inhibitors. Intracellular [ 14 C]ornithine was retained by resting cells after suspension in a buffered medium. However, addition of unlabeled ornithine to the suspension elicited rapid exit of labeled amino acid. The initial rate of exist of [ 14 C]ornithine was dependent on the concentration of unlabeled ornithine in the medium, but this accelerative exchange diffusion process caused no net loss of amino acid. By contrast, the presence of a fermentable energy source caused a rapid expulsion of and new decrease in the concentration of intracellular ornithine. Kinetic analyses of amino acid transport demonstrated competitive inhibition between lysine and ornithine, and data obtained by two-dimensional thin-layer chromatography established the heteroexchange of these basic amino acids. The effects of amino acids and of ornithine analogs on both entry and exit of [ 14 C]ornithine have been examined. The data suggest that common carrier mediates the entry and exchange of lysine, arginine, and ornithine in cells of S. lactis

  18. Characterization of Enterococcus faecalis Alkaline Phosphatase and Use in Identifying Streptococcus agalactiae Secreted Proteins

    OpenAIRE

    Lee, Martin H.; Nittayajarn, Aphakorn; Ross, R. Paul; Rothschild, Cynthia B.; Parsonage, Derek; Claiborne, Al; Rubens, Craig E.

    1999-01-01

    We have identified and characterized an Enterococcus faecalis alkaline phosphatase (AP, encoded by phoZ). The predicted gene product shows homology with alkaline phosphatases from a variety of species; it has especially high similarity with two alkaline phosphatases from Bacillus subtilis. Expression of phoZ in Escherichia coli, E. faecalis, Streptococcus agalactiae (group B streptococcus [GBS]), or Streptococcus pyogenes (group A streptococcus [GAS]) produces a blue-colony phenotype on plate...

  19. Biofilm formation enhances fomite survival of Streptococcus pneumoniae and Streptococcus pyogenes.

    Science.gov (United States)

    Marks, Laura R; Reddinger, Ryan M; Hakansson, Anders P

    2014-03-01

    Both Streptococcus pyogenes and Streptococcus pneumoniae are widely thought to rapidly die outside the human host, losing infectivity following desiccation in the environment. However, to date, all literature investigating the infectivity of desiccated streptococci has used broth-grown, planktonic populations. In this study, we examined the impact of biofilm formation on environmental survival of clinical and laboratory isolates of S. pyogenes and S. pneumoniae as both organisms are thought to colonize the human host as biofilms. Results clearly demonstrate that while planktonic cells that are desiccated rapidly lose viability both on hands and abiotic surfaces, such as plastic, biofilm bacteria remain viable over extended periods of time outside the host and remain infectious in a murine colonization model. To explore the level and extent of streptococcal fomite contamination that children might be exposed to naturally, direct bacteriologic cultures of items in a day care center were conducted, which demonstrated high levels of viable streptococci of both species. These findings raise the possibility that streptococci may survive in the environment and be transferred from person to person via fomites contaminated with oropharyngeal secretions containing biofilm streptococci.

  20. In-vitro efficacy of different morphology zinc oxide nanopowders on Streptococcus sobrinus and Streptococcus mutans.

    Science.gov (United States)

    Mohd Bakhori, Siti Khadijah; Mahmud, Shahrom; Ling, Chuo Ann; Sirelkhatim, Amna Hassan; Hasan, Habsah; Mohamad, Dasmawati; Masudi, Sam'an Malik; Seeni, Azman; Abd Rahman, Rosliza

    2017-09-01

    ZnO with two different morphologies were used to study the inhibition of Streptococcus sobrinus and Streptococcus mutans which are closely associated with tooth cavity. Rod-like shaped ZnO-A and plate-like shaped ZnO-B were produced using a zinc boiling furnace. The nanopowders were characterized using energy filtered transmission electron microscopy (EFTEM), X-ray diffraction (XRD), photoluminescence (PL) spectroscopy, Raman spectroscopy and dynamic light scattering (DLS) to confirm the properties of the ZnO polycrystalline wurtzite structures. XRD results show that the calculated crystallite sizes of ZnO-A and ZnO-B were 36.6 and 39.4nm, respectively, whereas DLS revealed particle size distributions of 21.82nm (ZnO-A) and 52.21nm (ZnO-B). PL spectra showed ion vacancy defects related to green and red luminescence for both ZnO particles. These defects evolved during the generation of reactive oxygen species which contributed to the antibacterial activity. Antibacterial activity was investigated using microdilution technique towards S. sobrinus and S. mutans at different nanopowder concentrations. Results showed that ZnO-A exhibited higher inhibition on both bacteria compared with ZnO-B. Moreover, S. mutans was more sensitive compared with S. sobrinus because of its higher inhibition rate. Copyright © 2017 Elsevier B.V. All rights reserved.

  1. In Vitro Effect of Zingiber officinale Extract on Growth of Streptococcus mutans and Streptococcus sanguinis

    Directory of Open Access Journals (Sweden)

    Arash Azizi

    2015-01-01

    Full Text Available Background and Objectives. Tooth decay is an infectious disease of microbial origin. Considering the increasing prevalence of antibiotic resistance due to their overuse and also their side effects, medicinal plants are now considered for use against bacterial infections. This study aimed to assess the effects of different concentrations of Zingiber officinale extract on proliferation of Streptococcus mutans and Streptococcus sanguinis in vitro. Materials and Methods. In this experimental study, serial dilutions of the extract were prepared in two sets of 10 test tubes for each bacterium (total of 20. Standard amounts of bacterial suspension were added; 100ƛ of each tube was cultured on prepared solid agar plates and incubated at 37°C for 24 hours. Serial dilutions of the extract were prepared in another 20 tubes and 100ƛ of each tube was added to blood agar culture medium while being prepared. The mixture was transferred to the plates. The bacteria were inoculated on plates and incubated as described. Results. The minimum inhibitory concentration (MIC was 0.02 mg/mL for S. mutans and 0.3 mg/mL for S. sanguinis. The minimum bactericidal concentration (MBC was 0.04 mg for S. mutans and 0.6 mg for S. sanguinis. Conclusion. Zingiber officinale extract has significant antibacterial activity against S. mutans and S. sanguinis cariogenic microorganisms.

  2. Inhibitory effects of antiseptic mouthrinses on Streptococcus mutans, Streptococcus sanguinis and Lactobacillus acidophilus.

    Science.gov (United States)

    Evans, A; Leishman, S J; Walsh, L J; Seow, W K

    2015-06-01

    Oral antiseptics are valuable in controlling oral infections caused by cariogenic bacteria. The aim of this study was to investigate the effects of mouthrinses and pure antiseptic compounds on Streptococcus mutans and non-mutans bacteria (Streptococcus sanguinis and Lactobacillus acidophilus). The agar diffusion assay was employed to determine bacterial growth inhibition. Commercial mouthrinses containing chlorhexidine gluconate (0.2%), cetylpyridinium chloride (0.05%) and sodium fluoride (0.05%) produced statistically similar growth inhibition of S. mutans, S. sanguinis and L. acidophilus (with zones of inhibition ranging from 7.56 ± 0.52 mm to 7.39 ± 0.53 mm, 17.44 ± 0.94 mm to 18.31 ± 0.62 mm and 8.61 ± 1.43 to 8.67 ± 1.43 mm respectively, p > 0.05). The chlorhexidine mouthwash produced the greatest mean growth inhibition of S. sanguinis and S. mutans compared to all other mouthrinses tested (p < 0.01). The minimum concentrations at which inhibition against S. mutans could be detected were chlorhexidine gluconate at 0.005% (wt/vol), cetylpyridinium chloride 0.01% (wt/ vol), povidone iodine 10% (wt/vol) and sodium hypochlorite 0.5% (vol/vol). Chlorhexidine (0.01%), cetylpyridinium chloride (0.01%), povidone iodine (10%) and sodium hypochlorite (0.5%) are effective at inhibiting the growth of S. mutans, S. sanguinis and L. acidophilus. © 2015 Australian Dental Association.

  3. Streptococcus porci sp. nov., isolated from swine sources.

    Science.gov (United States)

    Vela, A I; Perez, M; Zamora, L; Palacios, L; Domínguez, L; Fernández-Garayzábal, J F

    2010-01-01

    Two unidentified Gram-positive, catalase-negative, coccus-shaped organisms were recovered from pigs and subjected to a polyphasic taxonomic analysis. Based on cellular morphology and biochemical criteria, the isolates were tentatively assigned to the genus Streptococcus, although the organisms did not appear to correspond to any recognized species. Comparative 16S rRNA gene sequence studies confirmed this identification and showed that the nearest phylogenetic relatives of the unknown cocci were Streptococcus plurextorum 1956-02(T) and Streptococcus suis NCTC 10234(T) (97.9 and 96.0 % 16S rRNA gene sequence similarity, respectively). The new isolates were related most closely to S. suis CIP 103217(T) based on rpoB gene sequence analysis (<8 % sequence divergence). DNA-DNA pairing studies showed that one of the unidentified strains (2923-03(T)) displayed DNA relatedness values of 26.6 and 27.2 % with S. plurextorum CECT 7308(T) and S. suis NCTC 10234(T), respectively. On the basis of phenotypic and phylogenetic evidence, it is proposed that the unknown isolates from pigs be classified in the genus Streptococcus as members of Streptococcus porci sp. nov., with the type strain 2923-03(T) (=CECT 7374(T) =CCUG 55896(T)).

  4. Artrodese lombar minimamente invasiva com acesso intermuscular sem material cirúrgico especial: estudo de série de casos Artrodesis lumbar mínimamente invasiva con acceso intermuscular sin material quirúrgico especial: estudio de serie de casos Minimally invasive lumbar arthrodesis with intermuscular approach without special surgical material: a case series

    Directory of Open Access Journals (Sweden)

    Bruno de Azevedo Oliveira

    2011-01-01

    Full Text Available OBJETIVOS: Analisar os resultados clínicos de uma série de pacientes com doença degenerativa da coluna lombar tratados com artrodese circunferencial com acesso minimamente invasivo intermuscular sem material cirúrgico especial. MÉTODOS: Análise de uma série prospectiva de 12 pacientes consecutivos não-randomizados submetidos à fusão lombossacra de 1 nível para doença degenerativa. Avaliados os Índices de Oswestry 2.0 e a escala visual analógica de dor (VAS no pré-operatório e seis meses após a cirurgia. A artrodese foi realizada por acesso paramediano bilateral entre os músculos multifidus e longissimus com o uso de afastador cervical simples com lâminas cambiáveis e implantes convencionais. RESULTADOS: Houve uma melhora média de 3,6 pontos na VAS e 27,5 pontos percentuais no Índice de Oswestry quando comparadas as avaliações pré-operatórias e após seis meses de follow-up. As melhoras mais marcadas foram nos pacientes que apresentavam ciatalgia por hérnia discal associada à discopatia. Os quesitos do Índice de Oswestry que apresentaram melhor resultado foram a intensidade da dor e a qualidade do sono. Os que apresentaram pior resultado foram a capacidade de levantamento de pesos e a dor ao sentar. Não houve dificuldade adicional devido à técnica e ao material utilizado. CONCLUSÕES: A artrodese da coluna lombossacra por abordagem minimamente invasiva transmuscular pode ser realizada com afastadores cirúrgicos normais e implantes semelhantes ao da técnica tradicional sem prejuízo técnico ou no resultado clínico.OBJETIVOS: Analizar los resultados clínicos de una serie de pacientes con enfermedad degenerativa de la columna lumbar, tratados con artrodesis circunferencial con acceso intermuscular mínimamente invasivo, sin material quirúrgico especial. MÉTODOS: Análisis de una serie prospectiva de 12 pacientes consecutivos, no seleccionados aleatoriamente, sometidos a la fusión de un sólo nivel lumbosacro

  5. Local Th17/IgA immunity correlate with protection against intranasal infection with Streptococcus pyogenes

    DEFF Research Database (Denmark)

    Mortensen, Rasmus; Christensen, Dennis; Hansen, Lasse Bøllehuus

    2017-01-01

    Streptococcus pyogenes (group A streptococcus, GAS) is responsible for a wide array of infections. Respiratory transmission via droplets is the most common mode of transmission but it may also infect the host via other routes such as lesions in the skin. To advance the development of a future...... that locally primed immunity is important for the defense against intranasal infection with Streptococcus pyogenes....

  6. Streptococcal Toxic Shock Syndrome Caused by Group G Streptococcus, United Kingdom

    OpenAIRE

    Baxter, Melissa; Morgan, Marina

    2017-01-01

    We describe successful management of 3 patients with streptococcal toxic shock syndrome (STSS) attributable to group G Streptococcus infection. This small series supports recognition of group G Streptococcus in the etiology of STSS. We propose intravenous immunoglobulin be used in treatment as it is for STSS caused by group A Streptococcus.

  7. Streptococcus gordonii septic arthritis : two cases and review of literature

    Directory of Open Access Journals (Sweden)

    Yombi Jean cyr

    2012-09-01

    Full Text Available Abstract Background Despite advances in antimicrobial and surgical therapy, septic arthritis remains a rheumatologic emergency that can lead to rapid joint destruction and irreversible loss of function. In adults, Staphylococcus aureus is the most common microorganism isolated from native joints. Streptococcus gordonii is a prominent member of the viridans group of oral bacteria and is among the bacteria most frequently identified as being primary agent of subacute bacterial endocarditis. To the best of our knowledge, Streptococcus gordonii has not yet been described as agent of septic arthritis. Case Presentation We describe here two cases of septic arthritis due to Streptococcus gordonii. It gives us an opportunity to review epidemiology, diagnosis criteria and management of septic arthritis. Conclusion Although implication of S. gordonii as aetiologic agent of subacute endocarditis is well known, this organism is a rare cause of septic arthritis. In this case, the exclusion of associated endocarditis is warranted.

  8. Chlorophyll mediated photodynamic inactivation of blue laser on Streptococcus mutans

    Science.gov (United States)

    Astuti, Suryani Dyah; Zaidan, A.; Setiawati, Ernie Maduratna; Suhariningsih

    2016-03-01

    Photodynamic inactivation is an inactivation method in microbial pathogens that utilize light and photosensitizer. This study was conducted to investigate photodynamic inactivation effects of low intensity laser exposure with various dose energy on Streptococcus mutans bacteria. The photodynamic inactivation was achieved with the addition of chlorophyll as photosensitizers. To determine the survival percentage of Streptococcus mutans bacteria after laser exposure, the total plate count method was used. For this study, the wavelength of the laser is 405 nm and variables of energy doses are 1.44, 2.87, 4.31, 5.74, 7.18, and 8.61 in J/cm2. The results show that exposure to laser with energy dose of 7.18 J/cm2 has the best photodynamic inactivation with a decrease of 78% in Streptococcus

  9. Bacteriuria with group B streptococcus and preterm birth

    DEFF Research Database (Denmark)

    Khalil, M. R.; Uldbjerg, N.; Thorsen, P.

    2015-01-01

    Objectives: Preterm delivery (PTD) contributes to 70% of all perinatal deaths and nearly 50% of permanent neurological damages in children. Treatment and follow-up to prevent recolonization in pregnant women with Group B Streptococcus (GBS) in the urine may reduce the frequency of PTD. In a Cochr......Objectives: Preterm delivery (PTD) contributes to 70% of all perinatal deaths and nearly 50% of permanent neurological damages in children. Treatment and follow-up to prevent recolonization in pregnant women with Group B Streptococcus (GBS) in the urine may reduce the frequency of PTD...... (10.9%), while among the GBS BU negative 1,085 (8.7%) delivered preterm; indicating an association between GBS BU and PTD in crude analyzes (Odds Ratio 1.8; 95% Confidence Interval 1.5-2.2; P30, and 19.0% were smokers in pregnancy. Conclusions: Group B Streptococcus bacteriuria might be a risk factor...

  10. Effect of irradiation on the streptococcus mutans

    Energy Technology Data Exchange (ETDEWEB)

    Ahn, Ki Dong; Kim, Gyu Tae; Choi, Yong Suk; Hwang, Eui Hwan [Kyung Hee Univ., Seoul (Korea, Republic of)

    2007-03-15

    To observe direct effect of irradiation on cariogenic Streptococcus mutans. S. mutans GS5 was exposed to irradiation with a single absorbed dose of 10, 20, 30, and 40 Gy. Viability and changes in antibiotic sensitivity, morphology, transcription of virulence factors, and protein profile of bacterium after irradiation were examined by pour plate, disc diffusion method, Transmission electron microscopy. RT-PCR, and SDS-PAGE, respectively. After irradiation with 10 and 20 Gy, viability of S. mutans was reduced. Further increase in irradiation dose, however, did not affect the viability of the remaining cells of S. mutans. Irradiated S. mutans was found to have become sensitive to antibiotics. In particular, the bacterium irradiated with 40 Gy increased its susceptibility to cefotaxime, penicillin, and tetracycline. Under the transmission electron microscope, number of morphologically abnormal cells was increased as the irradiation dose was increased. S. mutans irradiated with 10 Gy revealed a change in the cell wall and cell membrane. As irradiation dose was increased. a higher number of cells showed thickened cell wall and cell membrane and lysis, and appearance of ghost cells was noticeable. In RT-PCR, no difference was detected in expression of gtfB and spaP between cells with and without irradiation of 40 Gy. In SDS-PAGE, proteins with higher molecular masses were gradually diminished as irradiation dose was increased. These results suggest that irradiation affects the cell integrity of S. mutans, as observed by SDS-PAGE, and as manifested by the change in cell morphology, antibiotic sensitivity, and eventually viability of the bacterium.

  11. Effect of irradiation on the streptococcus mutans

    International Nuclear Information System (INIS)

    Ahn, Ki Dong; Kim, Gyu Tae; Choi, Yong Suk; Hwang, Eui Hwan

    2007-01-01

    To observe direct effect of irradiation on cariogenic Streptococcus mutans. S. mutans GS5 was exposed to irradiation with a single absorbed dose of 10, 20, 30, and 40 Gy. Viability and changes in antibiotic sensitivity, morphology, transcription of virulence factors, and protein profile of bacterium after irradiation were examined by pour plate, disc diffusion method, Transmission electron microscopy. RT-PCR, and SDS-PAGE, respectively. After irradiation with 10 and 20 Gy, viability of S. mutans was reduced. Further increase in irradiation dose, however, did not affect the viability of the remaining cells of S. mutans. Irradiated S. mutans was found to have become sensitive to antibiotics. In particular, the bacterium irradiated with 40 Gy increased its susceptibility to cefotaxime, penicillin, and tetracycline. Under the transmission electron microscope, number of morphologically abnormal cells was increased as the irradiation dose was increased. S. mutans irradiated with 10 Gy revealed a change in the cell wall and cell membrane. As irradiation dose was increased. a higher number of cells showed thickened cell wall and cell membrane and lysis, and appearance of ghost cells was noticeable. In RT-PCR, no difference was detected in expression of gtfB and spaP between cells with and without irradiation of 40 Gy. In SDS-PAGE, proteins with higher molecular masses were gradually diminished as irradiation dose was increased. These results suggest that irradiation affects the cell integrity of S. mutans, as observed by SDS-PAGE, and as manifested by the change in cell morphology, antibiotic sensitivity, and eventually viability of the bacterium

  12. Thermoregulation of Capsule Production by Streptococcus pyogenes

    Science.gov (United States)

    Kang, Song Ok; Wright, Jordan O.; Tesorero, Rafael A.; Lee, Hyunwoo; Beall, Bernard; Cho, Kyu Hong

    2012-01-01

    The capsule of Streptococcus pyogenes serves as an adhesin as well as an anti-phagocytic factor by binding to CD44 on keratinocytes of the pharyngeal mucosa and the skin, the main entry sites of the pathogen. We discovered that S. pyogenes HSC5 and MGAS315 strains are further thermoregulated for capsule production at a post-transcriptional level in addition to the transcriptional regulation by the CovRS two-component regulatory system. When the transcription of the hasABC capsular biosynthetic locus was de-repressed through mutation of the covRS system, the two strains, which have been used for pathogenesis studies in the laboratory, exhibited markedly increased capsule production at sub-body temperature. Employing transposon mutagenesis, we found that CvfA, a previously identified membrane-associated endoribonuclease, is required for the thermoregulation of capsule synthesis. The mutation of the cvfA gene conferred increased capsule production regardless of temperature. However, the amount of the capsule transcript was not changed by the mutation, indicating that a post-transcriptional regulator mediates between CvfA and thermoregulated capsule production. When we tested naturally occurring invasive mucoid strains, a high percentage (11/53, 21%) of the strains exhibited thermoregulated capsule production. As expected, the mucoid phenotype of these strains at sub-body temperature was due to mutations within the chromosomal covRS genes. Capsule thermoregulation that exhibits high capsule production at lower temperatures that occur on the skin or mucosal surface potentially confers better capability of adhesion and invasion when S. pyogenes penetrates the epithelial surface. PMID:22615992

  13. Outcome of sporadic amyotrophic lateral sclerosis treated With non-invasive ventilation and riluzole Sobrevida en pacientes con esclerosis lateral amiotrófica esporádica tratados con ventilación no invasiva y riluzole

    Directory of Open Access Journals (Sweden)

    Martín Sívori

    2007-08-01

    Full Text Available Sporadic amyotrophic lateral sclerosis (sALS is a progressive degenerative motor neuron disorder lacking specific treatment. Riluzole is the only drug able to modestly slow down the course of the disease. Respiratory insufficiency is the main cause of death; non invasive ventilation (NIV has shown to improve survival. Our aim was to evaluate the effect of NIV and riluzole on survival. Ninety seven patients with a diagnosis of sALS were assessed and followed up for 60 months. Twenty nine patients received NIV and 68 did not (nNIV. Overall median survival In the NIV group was 15.41 ± 7.78 months vs. 10.88 ± 7.78 months in the nNIV group (p= 0.028. Median survival time was not different in patients receiving riluzole (n=44, as compared with those who did not (n=53, although at month 4th and 5th riluzole treated patients showed a modest benefit. In those who only received NIV (n=11 or only riluzole (n=26, survival time was 13.45 ± 13.44 months and 11.19 ± 7.79 months, respectively. Patients who received both NIV and riluzole (n=18 had a median survival time of 16.61 ± 10.97 months vs. 10.69 ± 7.86 months for those who received only supportive treatment (n=42 (p= 0.021. NIV improved survival in our series of patients. Riluzole did not show any significant impact on survival when employed as the only therapy. Patients receiving both treatments simultaneously had a significant longer survival.La esclerosis lateral amiotrófica esporádica (sALS es una enfermedad degenerativa para la que no existe tratamiento etiológico eficaz. El riluzole prolonga poco la sobrevida. La principal causa de muerte es la insuficiencia respiratoria. Uno de los tratamientos para esta última es la ventilación asistida no invasiva (NIV con equipos de doble nivel de presión. El objetivo de este trabajo fue determinar el impacto en la sobrevida de estos enfermos combinando ventilación no invasiva y riluzole. Se evaluaron y siguieron durante 60 meses 97 pacientes con

  14. Tratamento cirúrgico das fraturas articulares desviadas do calcâneo por abordagem minimamente invasiva Surgical treatment of displaced intra-articular fractures of the calcaneus using a less invasive approach

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    Fernando Araújo Silva Lopes

    2008-10-01

    Full Text Available OBJETIVOS: Avaliar pacientes com fraturas articulares do calcâneo tratados entre dezembro de 2000 e agosto de 2007 por técnica cirúrgica minimamente invasiva, com ênfase nos resultados e complicações. MÉTODOS: Estudo retrospectivo de 21 pacientes com 22 fraturas desviadas do calcâneo, tratadas com redução aberta ou fechada e fixação mínima. Nos 16 pacientes nos quais foi necessária a redução aberta, utilizou-se o acesso lateral direto e em nenhum placas ou enxerto ósseo. RESULTADOS: O seguimento médio foi de três anos variando de seis a 82 meses. Foram empregados os métodos Maryland Foot Score e o escore de retropé da American Orthopaedic Foot and Ankle Society para avaliação clínica dos pacientes. Dezenove pés (86,4% tiveram resultados bons/excelentes e três pés (13,6%, resultados regular/ruim. Nenhum paciente apresentou complicação aguda da ferida cirúrgica, seja necrose de partes moles ou infecção. CONCLUSÃO: As técnicas cirúrgicas menos invasivas e fixações mínimas permitem resultados clínicos similares àqueles das técnicas mais agressivas, sem, entretanto, incidir em significativo número de complicações em partes moles e infecções.OBJECTIVE: To evaluate patients with articular fractures of the calcaneus treated between December 2000 and August 2007 by minimally invasive surgical technique, with emphasis on results and complications. METHODS: Retrospective study of 21 patients with 22 displaced fractures of the calcaneus, treated with open or closed reduction and minimal fixation. In the 16 patients for whom open reduction was required, right lateral access was used and plates or bone grafting were not used at all. RESULTS: Mean follow-up was three years, varying from 6 to 82 months. The Maryland Foot Score and the hindfoot score of the American Orthopedic Foot and Ankle Society were used in the clinical evaluation of the patients. Nineteen feet (86.4% had good/excellent results and three feet

  15. INDUCIBLE TRANSPORT SYSTEM FOR CITRULLINE IN STREPTOCOCCUS FAECALIS.

    Science.gov (United States)

    BIBB, W R; STRAUGHN, W R

    1964-04-01

    Bibb, William R. (University of North Carolina, Chapel Hill), and W. R. Straughan. Inducible transport system for citrulline in Streptococcus faecalis. J. Bacteriol. 87:815-822. 1964.-With Streptococcus faecalis F24, it was demonstrated: that the citrulline transport mechanism, induced by growth in arginine, follows enzyme kinetics; that cell membranes from induced and noninduced cells differ considerably in their ability to adsorb citrulline; that protoplasts demonstrate a similar selectivity; and that, throughout various alterations of the growth medium and growth conditions, a consistent difference in citrulline uptake between induced and noninduced cells was present. A proposed explanation based on experimental findings is offered.

  16. Sépsis neonatal tardia por Streptococcus agalactiae

    OpenAIRE

    Mina, Isabel Alves Pereira

    2017-01-01

    Trabalho Final do Curso de Mestrado Integrado em Medicina, Faculdade de Medicina, Universidade de Lisboa, 2017 A sépsis neonatal tardia é uma causa importante de morbilidade e mortalidade. O Streptococcus do Grupo B de Lancefield, ou Streptococcus agalactiae é um agente importante de infeção bacteriana no recém-nascido, permanecendo a principal causa de sépsis e meningite nos países desenvolvidos. Tem duas principais formas clínicas de apresentação: precoce e tardia. Desta última, conhecem...

  17. IDENTIFIKASI STREPTOCOCCUS EQUI DARI KUDA YANG DIDUGA MENDERITA STRANGLES

    Directory of Open Access Journals (Sweden)

    Rahmat Hidayat

    2012-12-01

    Full Text Available This study aims to determine the presence of the Streptococcus equi causes Strangles in horses. Inspection carried out by isolation and identification of bacteria from 20 samples nasal swabs of suspected horse disease Strangles. Isolation and identification of activities performed by the method of bacterial culture, Gram stain, catalase test, and with sugar test. Results obtained from a series of tests to identify the bacteria Streptococcus equi of 20 horses suspected by clinical strangles, there is a horse infected by Strangles disease.

  18. Streptococcus suis in slaughter pigs and abattoir workers.

    Science.gov (United States)

    Breton, J; Mitchell, W R; Rosendal, S

    1986-01-01

    The detection and identification of Streptococcus suis type 2 in 8.1% of 347 pig herds of southwestern Ontario revealed that the infection is widespread in this area. A herd suspected to be infected showed a carrier rate of 9.7% among the 62 animals sampled. These subclinical carriers represent a potential source of infection for slaughterhouse workers. From studies of contamination of hands and knives, it was concluded that eviscerators involved in removing the larynx and lungs from the carcasses have a significantly higher (p less than or equal to 0.05) risk of exposure to Streptococcus suis than other abattoir workers. PMID:3742369

  19. Draft Genome Sequence of Type Strain Streptococcus gordonii ATCC 10558

    DEFF Research Database (Denmark)

    Rasmussen, Louise Hesselbjerg; Dargis, Rimtas; Christensen, Jens Jørgen Elmer

    2016-01-01

    Streptococcus gordonii ATCC 10558T was isolated from a patient with infective endocarditis in 1946 and announced as a type strain in 1989. Here, we report the 2,154,510-bp draft genome sequence of S. gordonii ATCC 10558T. This sequence will contribute to knowledge about the pathogenesis of infect......Streptococcus gordonii ATCC 10558T was isolated from a patient with infective endocarditis in 1946 and announced as a type strain in 1989. Here, we report the 2,154,510-bp draft genome sequence of S. gordonii ATCC 10558T. This sequence will contribute to knowledge about the pathogenesis...

  20. Molecular Epidemiology and Genomics of Group A Streptococcus

    Science.gov (United States)

    Bessen, Debra E.; McShan, W. Michael; Nguyen, Scott V.; Shetty, Amol; Agrawal, Sonia; Tettelin, Hervé

    2014-01-01

    Streptococcus pyogenes (group A streptococcus; GAS) is a strict human pathogen with a very high prevalence worldwide. This review highlights the genetic organization of the species and the important ecological considerations that impact its evolution. Recent advances are presented on the topics of molecular epidemiology, population biology, molecular basis for genetic change, genome structure and genetic flux, phylogenomics and closely related streptococcal species, and the long- and short-term evolution of GAS. The application of whole genome sequence data to addressing key biological questions is discussed. PMID:25460818

  1. Verrucous endocarditis associated with Streptococcus bovis in mink (Mustela vison)

    DEFF Research Database (Denmark)

    Pedersen, Karl; Jørgensen, J.C.; Dietz, Hans-Henrik

    2003-01-01

    Between 1998 and 2001, mortalities due to verrucous endocarditis were experienced at several mink farms. Gram-positive cocci were isolated from the endocardium of all the animals examined but not always from other internal organs. Almost all the isolates were identified as Streptococcus bovis...... and only a few isolates belonged to other Streptococcus species. Typing by pulsed-field gel electrophoresis of a selection of isolates revealed several patterns and several different clones. Attempts to reproduce disease by the injection of cultures of a field isolate into healthy mink failed....

  2. Species identification of Streptococcus bovis group isolates causing bacteremia

    DEFF Research Database (Denmark)

    Agergaard, Charlotte N; Knudsen, Elisa; Dargis, Rimtas

    2017-01-01

    This study compared two MALDI-TOF MS systems (Biotyper and VITEK MS) on clinical Streptococcus bovis group isolates (n=66). The VITEK MS gave fewer misidentifications and a higher rate of correct identifications than the Biotyper. Only the identification of S. lutetiensis by the VITEK MS was reli......This study compared two MALDI-TOF MS systems (Biotyper and VITEK MS) on clinical Streptococcus bovis group isolates (n=66). The VITEK MS gave fewer misidentifications and a higher rate of correct identifications than the Biotyper. Only the identification of S. lutetiensis by the VITEK MS...

  3. COMPARISON OF THE PHYSICOCHEMICAL SURFACE-PROPERTIES OF STREPTOCOCCUS-RATTUS WITH THOSE OF OTHER MUTANS STREPTOCOCCAL SPECIES

    NARCIS (Netherlands)

    VANDERMEI, HC; DESOET, JJ; DEGRAAFF, J; ROUXHET, PG; BUSSCHER, HJ

    1991-01-01

    Mutans streptococci comprise a group of seven closely related, yet distinct species. The distinction between the four species used in this study, namely Streptococcus sobrinus, Streptococcus cricetus, Streptococcus rattus, and Streptococcus mutans, has been made only recently on the basis of DNA

  4. Incidencia de enfermedad neumocócica invasiva en Cantabria (1995-2001 e implicaciones para el calendario vacunal Incidence of invasive pneumococcal disease in Cantabria, Spain, (1995-2001 and implications for the childhood inmunization schedule

    Directory of Open Access Journals (Sweden)

    A. González

    2003-12-01

    Full Text Available Objetivo: Describir la incidencia de enfermedad neumocócica invasiva en Cantabria en los años 1995-2001. Método: Consulta de los registros del conjunto mínimo básico de datos (CMBD de los hospitales públicos de Cantabria, así como altas de los hospitales privados, registro de enfermedades de declaración obligatoria (EDO, y diagnósticos microbiológicos e historias clínicas de los niños ingresados en el Servicio de Pediatría del Hospital Cantabria (el hospital de referencia de tercer nivel. Resultados: Se obtuvo una incidencia de meningitis de 5,55, 5,03 y 0,76/100.000 en los niños Objective: To describe the incidence of invasive pneumococcal disease in Cantabria (Spain between 1995 and 2001. Method: We reviewed the records of the Minimum Data Set (MDS of public hospitals in Cantabria, discharges from private hospitals and the registry of diseases of mandatory reporting, as well as the microbiologic diagnoses and medical records of children discharged from the Pediatric Service of the Cantabria Hospital (the tertiary care hospital in our autonomous community. Results: We obtained a meningitis incidence of 5.55, 5.03 and 0.76/100,000 in children < 2 years, ≥ 2 and < 5 years, and ≥ 5 years respectively, and an incidence of invasive disease of 11.11, 11.32 and 1.49/100,000 in the same age groups. Conclusions: The incidence of meningitis and invasive pneumococcal disease in Cantabria is low. We discuss factors that should be taken into account when introducing the pneumococcal conjugate vaccine in the childhood immunization schedule of Cantabria.

  5. Índice de perfusión periférica en la UCI neonatal: una respuesta a la monitorización no invasiva del recién nacido crítico

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    I. De La Peña Sanabria

    2017-06-01

    Full Text Available La necesidad de abordar y monitorear a los pacientes de forma mínimamente invasiva pero de manera más exacta reduciendo así el número de complicaciones, es lo que permitió desarrollar a través de los años el concepto de índice de perfusión. El índice de perfusión refleja el tono vasomotor periférico, gracias a la relación de las ondas pulsátiles y no pulsátiles medidas a través de un oxímetro de pulso. El recién nacido, particularmente el pretérmino, goza de una serie de características que lo hacen más vulnerable ante ciertas situaciones clínicas, del mismo modo, la respuesta fisiológica difiere de la de otros grupos poblacionales. De ahí el principal interés en esta nueva herramienta, la cual ayudaría a entender la compleja fisiología cardiovascular neonatal y de esta forma interpretar mejor su respuesta, realizando intervenciones oportunas. El siguiente artículo desarrolla la historia y las bases fisiológicas que ayudaron a desarrollar el índice de perfusión, además describe los estudios más recientes en la población neonatal.

  6. Enzymatic deacylation of lipoteichoic acid by protoplasts of Streptococcus faecium (Streptococcus faecalis ATCC 9790).

    Science.gov (United States)

    Kessler, R E; Shockman, G D

    1979-03-01

    High-molecular-weight, micellar lipoteichoic acid (LTA) was converted to a lower-molecular-weight, apparently deacylated polymer when the former was incubated in the presence of growing protoplasts of Streptococcus faecium (S. faecalis ATCC 9790), but not when incubated in fresh or spent protoplast medium. The mobility of the low-molecular-weight polymer upon agarose gel electrophoresis was indistinguishable from that of native extracellular lipoteichoic acid LTA(X) from this organism or from chemically deacylated LTA. Native LTA(X) was shown to contain less than one fatty acid equivalent per 18 LTA(X) molecules, in contrast to the 4:1 ratio of fatty acids to polyglycerolphosphate chains in micellar LTA.

  7. Influència de la resposta immunitària innata en la malaltia pneumocòccica invasiva greu: polimorfismes genètics en la via de senyalització Toll-IL1R i expressió de la L-selectina en leucòcits

    OpenAIRE

    Carrasco Colom, Jaume

    2016-01-01

    [cat] INTRODUCCIÓ: La malaltia pneumocòccica invasiva (MPI) pot tenir una elevada morbimortalitat, condicionada pel pneumococ i per factors de l’hoste com els receptors Toll-like (TLRs) i la seva via de senyalització intracel·lular comuna Toll-IL1R (TIR). El desenvolupament d’una MPI greu (MPIG) podria estar condicionat per polimorfismes genètics (SNPs) en regions crítiques de la via de senyalització comuna TIR. Aquests SNPs podrien influenciar també l’evolució i el pronòstic de la MPI. La d...

  8. Influència de la resposta immunitària innata en la malaltia pneumocòccica invasiva greu: polimorfismes genètics en la via de senyalització Toll-IL1R i expressió de la L-selectina en leucòcits

    OpenAIRE

    Carrasco Colom, Jaume

    2016-01-01

    INTRODUCCIÓ: La malaltia pneumocòccica invasiva (MPI) pot tenir una elevada morbimortalitat, condicionada pel pneumococ i per factors de l’hoste com els receptors Toll-like (TLRs) i la seva via de senyalització intracel·lular comuna Toll-IL1R (TIR). El desenvolupament d’una MPI greu (MPIG) podria estar condicionat per polimorfismes genètics (SNPs) en regions crítiques de la via de senyalització comuna TIR. Aquests SNPs podrien influenciar també l’evolució i el pronòstic de la MPI. La d...

  9. Processo Internacional pelos danos socioambientais causados a Equador pelo uso do Glifosato no combate de cultivos ilícitos na Amazônia Colombiana

    Directory of Open Access Journals (Sweden)

    Mónica Montana

    2013-04-01

    Full Text Available A produção de cultivos ilícitos e o tráfico de drogas no âmbito amazônico tem se convertido numa dinâmica local e regional preocupante, por afetar não apenas as relações societais, mas também por estimular impactos hidroambientais negativos na população e na ambiência. As aspersões aéreas realizadas pelo Estado colombiano na área de fronteira com Equador, para combater o narcotráfico e os plantios ilícitos, resultou num processo jurídico inédito na América do Sul. O Estado equatoriano instaurou demanda na Corte de Haia contra Colômbia, em 2008, devido ao uso de herbicidas tóxicos, entre eles o glifosato. Esse processo trouxe à tona a importância do tema ambiental e colocou em relevo a necessária participação das organizações não governamentais na luta pelos direitos das populações amazônicas na área do conflito. Este artigo sintetiza as circunstâncias em que a demanda se produziu e os argumentos apresentados pelos dois países andino-amazônicos.

  10. Streptococcus oligofermentans Inhibits Streptococcus mutans in Biofilms at Both Neutral pH and Cariogenic Conditions.

    Science.gov (United States)

    Bao, Xudong; de Soet, Johannes Jacob; Tong, Huichun; Gao, Xuejun; He, Libang; van Loveren, Cor; Deng, Dong Mei

    2015-01-01

    Homeostasis of oral microbiota can be maintained through microbial interactions. Previous studies showed that Streptococcus oligofermentans, a non-mutans streptococci frequently isolated from caries-free subjects, inhibited the cariogenic Streptococcus mutans by the production of hydrogen peroxide (HP). Since pH is a critical factor in caries formation, we aimed to study the influence of pH on the competition between S. oligofermentans and S. mutans in biofilms. To this end, S. mutans and S. oligofermentans were inoculated alone or mixed at 1:1 ratio in buffered biofilm medium in a 96-well active attachment model. The single- and dual-species biofilms were grown under either constantly neutral pH or pH-cycling conditions. The latter includes two cycles of 8 h neutral pH and 16 h pH 5.5, used to mimic cariogenic condition. The 48 h biofilms were analysed for the viable cell counts, lactate and HP production. The last two measurements were carried out after incubating the 48 h biofilms in buffers supplemented with 1% glucose (pH 7.0) for 4 h. The results showed that S. oligofermentans inhibited the growth of S. mutans in dual-species biofilms under both tested pH conditions. The lactic acid production of dual-species biofilms was significantly lower than that of single-species S. mutans biofilms. Moreover, dual-species and single-species S. oligofermentans biofilms grown under pH-cycling conditions (with a 16 h low pH period) produced a significantly higher amount of HP than those grown under constantly neutral pH. In conclusion, S. oligofermentans inhibited S. mutans in biofilms not only under neutral pH, but also under pH-cycling conditions, likely through HP production. S. oligofermentans may be a compelling probiotic candidate against caries.

  11. In silico analysis of the competition between Streptococcus sanguinis and Streptococcus mutans in the dental biofilm.

    Science.gov (United States)

    Valdebenito, B; Tullume-Vergara, P O; González, W; Kreth, J; Giacaman, R A

    2018-04-01

    During dental caries, the dental biofilm modifies the composition of the hundreds of involved bacterial species. Changing environmental conditions influence competition. A pertinent model to exemplify the complex interplay of the microorganisms in the human dental biofilm is the competition between Streptococcus sanguinis and Streptococcus mutans. It has been reported that children and adults harbor greater numbers of S. sanguinis in the oral cavity, associated with caries-free teeth. Conversely, S. mutans is predominant in individuals with a high number of carious lesions. Competition between both microorganisms stems from the production of H 2 O 2 by S. sanguinis and mutacins, a type of bacteriocins, by S. mutans. There is limited evidence on how S. sanguinis survives its own H 2 O 2 levels, or if it has other mechanisms that might aid in the competition against S. mutans, nonetheless. We performed a genomic and metabolic pathway comparison, coupled with a comprehensive literature review, to better understand the competition between these two species. Results indicated that S. sanguinis can outcompete S. mutans by the production of an enzyme capable of metabolizing H 2 O 2 . S. mutans, however, lacks the enzyme and is susceptible to the peroxide from S. sanguinis. In addition, S. sanguinis can generate energy through gluconeogenesis and seems to have evolved different communication mechanisms, indicating that novel proteins may be responsible for intra-species communication. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  12. Capsular Sialyltransferase Specificity Mediates Different Phenotypes in Streptococcus suis and Group B Streptococcus

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    David Roy

    2018-04-01

    Full Text Available The capsular polysaccharide (CPS represents a key virulence factor for most encapsulated streptococci. Streptococcus suis and Group B Streptococcus (GBS are both well-encapsulated pathogens of clinical importance in veterinary and/or human medicine and responsible for invasive systemic diseases. S. suis and GBS are the only Gram-positive bacteria which express a sialylated CPS at their surface. An important difference between these two sialylated CPSs is the linkage between the side-chain terminal galactose and sialic acid, being α-2,6 for S. suis but α-2,3 for GBS. It is still unclear how sialic acid may affect CPS production and, consequently, the pathogenesis of the disease caused by these two bacterial pathogens. Here, we investigated the role of sialic acid and the putative effect of sialic acid linkage modification in CPS synthesis using inter-species allelic exchange mutagenesis. To this aim, a new molecular biogenetic approach to express CPS with modified sialic acid linkage was developed. We showed that sialic acid (and its α-2,6 linkage is crucial for S. suis CPS synthesis, whereas for GBS, CPS synthesis may occur in presence of an α-2,6 sialyltransferase or in absence of sialic acid moiety. To evaluate the effect of the CPS composition/structure on sialyltransferase activity, two distinct capsular serotypes within each bacterial species were compared (S. suis serotypes 2 and 14 and GBS serotypes III and V. It was demonstrated that the observed differences in sialyltransferase activity and specificity between S. suis and GBS were serotype unrestricted. This is the first time that a study investigates the interspecies exchange of capsular sialyltransferase genes in Gram-positive bacteria. The obtained mutants represent novel tools that could be used to further investigate the immunomodulatory properties of sialylated CPSs. Finally, in spite of common CPS structural characteristics and similarities in the cps loci, sialic acid exerts

  13. Isolation and Typing of Streptococcus mutans and Streptococcus sobrinus from Caries-active Subjects.

    Science.gov (United States)

    Salman, Hamzah Abdulrahman; Senthilkumar, R; Imran, Khalid; Selvam, K Panneer

    2017-01-01

    Streptococcus mutans and Streptococcus sobrinus are main etiological agents of dental caries. The aim of the study was to isolate, identify, characterize, and determine the minimum inhibitory concentration (MIC) of S. mutans and S. sobrinus from caries-active subjects. Sixty-five plaque samples were collected from caries-active subjects aged between 35 and 44 years, processed and cultured on mitis salivarius bacitracin agar. All the bacterial isolates were subjected to morphotyping and the suspected colonies were identified by 16S rDNA sequencing. The S. mutans and S. sobrinus strains were characterized by biotyping and phylogenetic analysis. The MIC of ampicillin and erythromycin was determined by microtiter plate method. Of the study population, 41 isolates displayed typical colony morphologies of S. mutans and S. sobrinus . The 16S rDNA sequencing results revealed that 36 isolates were S. mutans and 5 isolates were S. sobrinus . The biotyping of these isolates demonstrated three biotypes, namely, biotype I ( n = 35), biotype III ( n = 1), and biotype IV ( n = 2). However, 3 isolates exhibited variant biotypes. The phylogenetic analysis revealed that the clinical strains of S. mutans and S. sobrinus clustered independently along with respective reference strains. The average MIC of ampicillin and erythromycin against S. mutans and S. sobrinus was 0.047 μg/ml and 0.39 μg/ml, respectively. The 16S rDNA sequencing was an impeccable method for S. mutans and S. sobrinus identification when compared with morphotyping and biotyping methods. The study also suggested that nonspecific bacteria might be involved in caries formation.

  14. Isolation and typing of Streptococcus mutans and Streptococcus sobrinus from caries-active subjects

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    Hamzah Abdulrahman Salman

    2017-01-01

    Full Text Available Background: Streptococcus mutans and Streptococcus sobrinus are main etiological agents of dental caries. Aim: The aim of the study was to isolate, identify, characterize, and determine the minimum inhibitory concentration (MIC of S. mutans and S. sobrinus from caries-active subjects. Materials and Methods: Sixty-five plaque samples were collected from caries-active subjects aged between 35 and 44 years, processed and cultured on mitis salivarius bacitracin agar. All the bacterial isolates were subjected to morphotyping and the suspected colonies were identified by 16S rDNA sequencing. The S. mutans and S. sobrinus strains were characterized by biotyping and phylogenetic analysis. The MIC of ampicillin and erythromycin was determined by microtiter plate method. Results: Of the study population, 41 isolates displayed typical colony morphologies of S. mutans and S. sobrinus. The 16S rDNA sequencing results revealed that 36 isolates were S. mutans and 5 isolates were S. sobrinus. The biotyping of these isolates demonstrated three biotypes, namely, biotype I (n = 35, biotype III (n = 1, and biotype IV (n = 2. However, 3 isolates exhibited variant biotypes. The phylogenetic analysis revealed that the clinical strains of S. mutans and S. sobrinus clustered independently along with respective reference strains. The average MIC of ampicillin and erythromycin against S. mutans and S. sobrinus was 0.047 μg/ml and 0.39 μg/ml, respectively. Conclusion: The 16S rDNA sequencing was an impeccable method for S. mutans and S. sobrinus identification when compared with morphotyping and biotyping methods. The study also suggested that nonspecific bacteria might be involved in caries formation.

  15. Isolation and characterization of unsaturated fatty acid auxotrophs of Streptococcus pneumoniae and Streptococcus mutans.

    Science.gov (United States)

    Altabe, Silvia; Lopez, Paloma; de Mendoza, Diego

    2007-11-01

    Unsaturated fatty acid (UFA) biosynthesis is essential for the maintenance of membrane structure and function in many groups of anaerobic bacteria. Like Escherichia coli, the human pathogen Streptococcus pneumoniae produces straight-chain saturated fatty acids (SFA) and monounsaturated fatty acids. In E. coli UFA synthesis requires the action of two gene products, the essential isomerase/dehydratase encoded by fabA and an elongation condensing enzyme encoded by fabB. S. pneumoniae lacks both genes and instead employs a single enzyme with only an isomerase function encoded by the fabM gene. In this paper we report the construction and characterization of an S. pneumoniae 708 fabM mutant. This mutant failed to grow in complex medium, and the defect was overcome by addition of UFAs to the growth medium. S. pneumoniae fabM mutants did not produce detectable levels of monounsaturated fatty acids as determined by gas chromatography-mass spectrometry and thin-layer chromatography analysis of the radiolabeled phospholipids. We also demonstrate that a fabM null mutant of the cariogenic organism Streptococcus mutants is a UFA auxotroph, indicating that FabM is the only enzyme involved in the control of membrane fluidity in streptococci. Finally we report that the fabN gene of Enterococcus faecalis, coding for a dehydratase/isomerase, complements the growth of S. pneumoniae fabM mutants. Taken together, these results suggest that FabM is a potential target for chemotherapeutic agents against streptococci and that S. pneumoniae UFA auxotrophs could help identify novel genes encoding enzymes involved in UFA biosynthesis.

  16. Detection of Streptococcus pyogenes virulence genes in Streptococcus dysgalactiae subsp. equisimilis from Vellore, India.

    Science.gov (United States)

    Babbar, Anshu; Itzek, Andreas; Pieper, Dietmar H; Nitsche-Schmitz, D Patric

    2018-03-12

    Streptococcus dysgalactiae subsp. equisimilis (SDSE), belonging to the group C and G streptococci, are human pathogens reported to cause clinical manifestations similar to infections caused by Streptococcus pyogenes. To scrutinize the distribution of gene coding for S. pyogenes virulence factors in SDSE, 255 isolates were collected from humans infected with SDSE in Vellore, a region in southern India, with high incidence of SDSE infections. Initial evaluation indicated SDSE isolates comprising of 82.35% group G and 17.64% group C. A multiplex PCR system was used to detect 21 gene encoding virulence-associated factors of S. pyogenes, like superantigens, DNases, proteinases, and other immune modulatory toxins. As validated by DNA sequencing of the PCR products, sequences homologous to speC, speG, speH, speI, speL, ssa and smeZ of the family of superantigen coding genes and for DNases like sdaD and sdc were detected in the SDSE collection. Furthermore, there was high abundance (48.12% in group G and 86.6% in group C SDSE) of scpA, the gene coding for C5a peptidase in these isolates. Higher abundance of S. pyogenes virulence factor genes was observed in SDSE of Lancefield group C as compared to group G, even though the incidence rates in former were lower. This study not only substantiates detection of S. pyogenes virulence factor genes in whole genome sequenced SDSE but also makes significant contribution towards the understanding of SDSE and its increasing virulence potential.

  17. Antibiotic susceptibility of periodontal Streptococcus constellatus and Streptococcus intermedius clinical isolates.

    Science.gov (United States)

    Rams, Thomas E; Feik, Diane; Mortensen, Joel E; Degener, John E; van Winkelhoff, Arie J

    2014-12-01

    Streptococcus constellatus and Streptococcus intermedius in subgingival dental plaque biofilms may contribute to forms of periodontitis that resist treatment with conventional mechanical root debridement/surgical procedures and may additionally participate in some extraoral infections. Because systemic antibiotics are often used in these clinical situations, and little is known of the antibiotic susceptibility of subgingival isolates of these two bacterial species, this study determined the in vitro susceptibility to six antibiotics of fresh S. constellatus and S. intermedius clinical isolates from human periodontitis lesions. A total of 33 S. constellatus and 17 S. intermedius subgingival strains, each recovered from separate patients with severe chronic periodontitis (n = 50) before treatment, were subjected to antibiotic gradient strip susceptibility testing with amoxicillin, azithromycin, clindamycin, ciprofloxacin, and doxycycline on blood-supplemented Mueller-Hinton agar and to the inhibitory effects of metronidazole at 16 mg/L in an enriched Brucella blood agar dilution assay. Clinical and Laboratory Standards Institute and European Committee on Antimicrobial Susceptibility Testing interpretative standards were used to assess the results. Clindamycin was the most active antibiotic against S. constellatus (minimum inhibitory concentration at 90% [MIC90] 0.25 mg/L), and amoxicillin was most active against S. intermedius (MIC90 0.125 mg/L). A total of 30% of the S. constellatus and S. intermedius clinical isolates were resistant in vitro to doxycycline, 98% were only intermediate in susceptibility to ciprofloxacin, and 90% were resistant to metronidazole at 16 mg/L. Subgingival S. constellatus and S. intermedius exhibited variable antibiotic susceptibility profiles, potentially complicating empirical selection of periodontitis antibiotic therapy in patients who are species positive.

  18. [Clinical, echocardiographic and prognostic profile of Streptococcus viridans left-sided endocarditis].

    Science.gov (United States)

    López, Javier; San Román, José A; Revilla, Ana; Vilacosta, Isidre; Luaces, María; Sarriá, Cristina; Gómez, Itziar; Fernández-Avilés, Francisco

    2005-02-01

    Published case series on Streptococcus viridans endocarditis are scarce and outdated. The aims of our study were multiple: to analyze the profile of the Streptococcus viridans endocarditis, to compare it with other types of left-sided endocarditis and with cases caused by Staphylococcus aureus, and to determine predictors of poor outcome in Streptococcus viridans endocarditis. We analyzed 441 episodes of endocarditis: 330 left-sided and 54 caused by Streptococcus viridans (16%). We compared the 54 cases due to Streptococcus viridans with the remaining cases of left-sided endocarditis in our series, and also with cases caused by Staphylococcus aureus. We also analyzed the predictors of death and urgent surgery in Streptococcus viridans endocarditis. Left-sided endocarditis due to Streptococcus viridans led to a similar degree of valvular destruction, showed acute onset less frequently, and led to less renal failure, septic shock and mortality than the remaining cases of left-sided endocarditis in our series. The same differences were found in comparison to Streptococcus viridans endocarditis. Prognostic factors for Streptococcus viridans left-sided endocarditis were heart failure and periannular complications. Although Streptococcus viridans is a nonaggressive microorganism, valvular destruction is similar to that caused by other pathogens when it causes left-sided endocarditis. Nonetheless its prognosis is better, a feature which may be related to the fact that the systemic infectious syndrome can be treated more effectively. Prognostic factors in left-sided endocarditis due to Streptococcus viridans are heart failure and periannular complications.

  19. The novel species Streptococcus tigurinus and its association with oral infection.

    Science.gov (United States)

    Zbinden, Andrea; Bostanci, Nagihan; Belibasakis, Georgios N

    2015-01-01

    Streptococcus tigurinus is a novel species of viridans streptococci, shown to cause severe invasive infections such as infective endocarditis, spondylodiscitis and meningitis. S. tigurinus belongs to the Streptococcus mitis group and is most closely related to Streptococcus mitis, Streptococcus oralis, Streptococcus pneumoniae, Streptococcus pseudopneumoniae and Streptococcus infantis. The presence of S. tigurinus in the human oral cavity has been documented, including in patients with periodontal disease. This review addresses the available scientific knowledge on S. tigurinus and its association with closely related streptococci, and discusses its putative involvement in common oral infections. While there is as yet no strong evidence on the involvement of S. tigurinus with oral infections, its presence in the oral cavity and its association with endocarditis warrants special attention for a link between oral and systemic infection.

  20. Two weeks of postsurgical therapy may be enough for high-risk cases of endocarditis caused by Streptococcus viridans or Streptococcus bovis.

    Science.gov (United States)

    Muñoz, P; Giannella, M; Scoti, F; Predomingo, M; Puga, D; Pinto, A; Roda, J; Marin, M; Bouza, E

    2012-03-01

    The duration of antimicrobial therapy after surgery for infective endocarditis (IE) is controversial. A short course of postsurgical therapy is currently accepted only for patients with negative valve culture. We performed a retrospective (1994-2008) analysis of patients who underwent surgery for IE in our hospital and had a high risk of complications ( one of more of the following: Streptococcus viridans or Streptococcus bovis was independently associated with SAT. Postsurgical SAT is safe, especially when IE is caused by Streptococcus viridans or Streptococcus bovis, even in patients at high risk of complications. © 2011 The Authors. Clinical Microbiology and Infection © 2011 European Society of Clinical Microbiology and Infectious Diseases.

  1. Resistance of Streptococcus pneumoniae to antimicrobials in São Paulo, Brazil: clinical features and serotypes Resistência antimicrobiana de Streptococcus pneumoniae em São Paulo, Brasil: quadro clínico e sorotipos

    Directory of Open Access Journals (Sweden)

    Anna Sara S. Levin

    1996-06-01

    Full Text Available To study resistance to antimicrobials, serotypes and clinical features of S. pneumoniae in S. Paulo, Brazil, 50 patients with a positive culture were evaluated: 7 were considered carriers and 43 had pneumococcal infections. Pneumonia and meningitis were the most commom infections. Mortality was 34% and underlying diseases were present in 70%. Relative resistance to penicillin occurred in 24% and complete resistance was not detected. Resistance to tetracycline was 32% and to sulfamethoxazole/trimethoprim 32%; one strain had intermediate susceptibility to erythromycin; no resistance was present for chloramphenicol, rifampin or vancomycin. Resistance to at least one of the drugs tested occurred in 62%. Results by the E-test for penicillin were similar to those by the agar dilution method. There were 24 different serotypes and 74% of the strains belonged to the 23-valent vaccine including all the penicillin-resistant strains. In this study S. pneumoniae caused severe infections and presented a high resistance rate to commonly used antimicrobials. Routine surveillance of resistance and the use of vaccination, as well as the restriction of inappropriate use of antimicrobials, are recommended in São Paulo, Brazil.Com a finalidade de estudar resistência a antimicrobianos, sorotipos e quadro clínico de Streptococcus pneumoniae em São Paulo, Brasil, foram avaliados 50 pacientes com culturas positivas: 7 foram considerados portadores e 43 infectados. Pneumonia e meningite foram as infecções mais freqüentes. A letalidade foi de 34% e doenças de base estiveram presentes em 70%. Resistência relativa a penicilina ocorreu em 24% e a resistência completa não foi detectada. Resistência a tetraciclina ocorreu em 32% e a sulfametoxazol/trimetoprim em 32% e houve uma cepa com sensibilidade intermediária a eritromicina. Não houve resistência a cloranfenicol, rifampicina ou vancomicina. Em 62% dos casos houve resistência a pelo menos uma das drogas

  2. A REFORMA GERENCIAL DA ADMINISTRAÇÃO PUBLICA IDEALIZADA PELO MINISTRO BRESSER PEREIRA EM 1995

    Directory of Open Access Journals (Sweden)

    Katia Cristina Oliveira

    2017-04-01

    Full Text Available O objetivo deste artigo consiste na apreciação sobre a Reforma Administrativa da Gestão Pública idealizada em 1995 pelo Ministro da Administração e Reforma do Estado (MARE, Dr. Luiz Carlos Bresser Pereira. Os principais resultados, obtidos por meio de estudos bibliográficos demonstram que até a presente data a inovação é ditada, principalmente, pela demanda dos serviços públicos e pelos recursos cada vez mais escassos, sendo que redução da burocratização e modernização da maquina publica propostas  pelo Ministro Bresser Pereira, tem como enfoque principal a organização da estrutura do Estado e consequentemente a eficiência nos serviços públicos.

  3. Detection of Streptococcus iniae and Lactococcus garvieae by ...

    African Journals Online (AJOL)

    ELO

    2012-01-05

    Jan 5, 2012 ... Accepted 27 October, 2011. Streptococcosis is one of the most important bacterial diseases in farmed salmonid fishes. ... detection of the two mentioned bacteria in some rainbow trout farms in the west of Iran. A total of 50 fish samples ..... Diagnosis of bacterial endocarditis caused by Streptococcus lactis ...

  4. Maternal vaginorectal colonization by Group B Streptococcus and ...

    African Journals Online (AJOL)

    Mwanza, Tanzania. Abstract. Background: Group B streptococcus (GBS) and Listeria monocytogenes are members of the normal microbes of the female genital tract. During labour GBS and Listeria monocytogenes may infect the new- borns, leading to neonatal sepsis and meningitis. So far, there is no report on prevalence ...

  5. Molecular epidemiology and population structure of bovine Streptococcus uberis

    DEFF Research Database (Denmark)

    Rato, M G; Bexiga, R; Nunes, S F

    2008-01-01

    The molecular epidemiology and population structure of 30 bovine subclinical mastitis field isolates of Streptococcus uberis, collected from 6 Portuguese herds (among 12 farms screened) during 2002 and 2003, were examined by using pulsed-field gel electrophoresis (PFGE) for clustering of the isol...

  6. Maternal vaginorectal colonization by Group B Streptococcus and ...

    African Journals Online (AJOL)

    During labour GBS and Listeria monocytogenes may infect the new-borns, leading to neonatal sepsis and meningitis. So far, there is no report on prevalence of GBS and Listeria monocytogenes among pregnant women in Mwanza. The objective of the study was to determine the magnitude of Group B Streptococcus and ...

  7. A Study of Streptococcus Viridans in the Maxillofacial Region

    Directory of Open Access Journals (Sweden)

    Y. Refoua

    2005-12-01

    Full Text Available Statement of Problem: Streptococcus viridans is one of the most important microorganisms in the establishment of infections leading to dental caries and heart valve damages. Therefore the diagnosis and prevention of these infections is critical in health care.Purpose: The aim of this in-vivo study was to determine the prevalence of viridans streptococci in abscesses occurring in the maxillofacial region.Materials and Methods: The study sample consisted of 39 patients with maxillofacial abscesses, referred to the Department of Oral Surgery Faculty of Dentistry Tehran University of Medical Sciences and Dr. Shariati Hospital, Tehran University of Medical Sciences. Extra-oral incision, drainage and pus collection followed by culture, staining and biochemical and sugar fermentation tests were carried out for all participants.Results: In the present study %53.84 and 46.16% of the patients had negative and positive culture results, respectively. In the positive culture group, %2.5 of the viridans streptococci were streptococcus salivarius, %4.6 streptococcus sanguis and %17.9 were streptococcus mutans.Conclusion: The findings of this study showed that viridans streptococci are an important factor in the development of metastatic and maxillofacial infections which can pose a significant threat to the patient’s life.

  8. epidemiology of streptococcus group a in school aged children in ...

    African Journals Online (AJOL)

    hi-tech

    2004-06-01

    Jun 1, 2004 ... East African Medical Journal Vol. 81 No. 6 June 2004. EPIDEMIOLOGY OF STREPTOCOCCUS GROUP A IN SCHOOL AGED CHILDREN IN PEMBA. A. Braito, MD., I. Galgani, MD., The Clinic of Infectious Diseases, Department of Molecular Biology, University of Siena, Italy, M. R. Mohammed, MD.,.

  9. Streptococcus milleri causing infection in man | Millar | South African ...

    African Journals Online (AJOL)

    We describe the microbiological and morphological characteristics of 151 strains of Streptococcus milleri isolated during the course of routine bacteriological investigations. Although these strains formed a fairly heterogeneous group, several constant features were identified which typify the species. Strept. milleri emerged ...

  10. Evolution of Streptococcus pneumoniae and its close commensal relatives

    DEFF Research Database (Denmark)

    Kilian, Mogens; Poulsen, Knud; Blomqvist, Trinelise

    2008-01-01

    Streptococcus pneumoniae is a member of the Mitis group of streptococci which, according to 16S rRNA-sequence based phylogenetic reconstruction, includes 12 species. While other species of this group are considered prototypes of commensal bacteria, S. pneumoniae is among the most frequent microbial...

  11. Anticariogenic activity of some tropical medicinal plants against Streptococcus mutans.

    Science.gov (United States)

    Hwang, Jae-Kwan; Shim, Jae-Seok; Chung, Jae-Youn

    2004-09-01

    The methanol extracts of five tropical plants, Baeckea frutescens, Glycyrrhiza glabra, Kaempferia pandurata, Physalis angulata and Quercus infectoria, exhibited potent antibacterial activity against the cariogenic bacterium Streptococcus mutans. In particular, G. glabra, K. pandurata and P. angulata conferred fast killing bactericidal effect against S. mutans in 2 min at 50 microg/ml of extract concentration.

  12. Interactions of Streptococcus suis with the innate immune system

    NARCIS (Netherlands)

    Wichgers Schreur, P.J.

    2012-01-01

    Streptococcus suis is an important pig pathogen able to cause systemic disease and also able to asymptomatically colonize the upper respiratory tract. In almost all countries, S. suis has become an endemic pathogen and a substantial economic burden due to loss of production and expensive control

  13. Effect of 10% sodium ascorbate on Streptococcus mutans ...

    African Journals Online (AJOL)

    Sodium ascorbate has been suggested to modify bleaching agents' side effects especially on composite resin bonding to dental hard tissues. The aim of the present study was to evaluate the effect of 10% sodium ascorbate on Streptococcus mutans adherence to bleached enamel surfaces. Sixty enamel slabs from bovine ...

  14. Diversity of Streptococcus mutans strains in bacterial interspecies interactions

    NARCIS (Netherlands)

    Li, X.; Hoogenkamp, M.A.; Ling, J.; Crielaard, W.; Deng, D.M.

    2014-01-01

    Biofilms are matrix-enclosed microbial population adhere to each other and to surfaces. Compared to planktonic bacterial cells, biofilm cells show much higher levels of antimicrobial resistance. We aimed to investigate Streptococcus mutans strain diversity in biofilm formation and chlorhexidine

  15. Catabolite control of sugar metabolism in Streptococcus thermophilus

    NARCIS (Netherlands)

    Bogaard, van den P.T.C.

    2002-01-01

    Streptococcus thermophilus is used in many industrial dairy fermentations that require processing of milk at elevated temperatures. Its primary function is the rapid conversion of lactose to lactate while it also contributes to important sensory qualities. S.

  16. Streptococcus equi subsp. zooepidemicus Infections Associated with Guinea Pigs

    Science.gov (United States)

    Young, Andrea; Levine, Seth J.; Garvin, Joseph P.; Brown, Susan; Turner, Lauren; Fritzinger, Angela; Gertz, Robert E.; Murphy, Julia M.; Vogt, Marshall; Beall, Bernard

    2015-01-01

    Streptococcus equi subsp. zooepidemicus is a known zoonotic pathogen. In this public health investigation conducted in Virginia, USA, in 2013, we identified a probable family cluster of S. zooepidemicus cases linked epidemiologically and genetically to infected guinea pigs. S. zooepidemicus infections should be considered in patients who have severe clinical illness and report guinea pig exposure. PMID:25531424

  17. Recurrent Streptococcus equi subsp. zooepidemicus Bacteremia in an Infant.

    Science.gov (United States)

    Watson, Joshua R; Leber, Amy; Velineni, Sridhar; Timoney, John F; Ardura, Monica I

    2015-09-01

    We describe a case of an infant with recurrent bacteremia caused by Streptococcus equi subsp. zooepidemicus, likely transmitted from mother to infant. Our case highlights the importance of an epidemiological history and molecular diagnostics in ascertaining insights into transmission, pathogenesis, and optimal management. Copyright © 2015, American Society for Microbiology. All Rights Reserved.

  18. Clinical and microbiological features of bacteremia with Streptococcus equi.

    Science.gov (United States)

    Trell, Kristina; Nilson, Bo; Petersson, Ann-Cathrine; Rasmussen, Magnus

    2017-02-01

    Streptococcus equi (SE) rarely causes human infections. We identified 18 SE isolates from blood cultures. The focus of infection was unknown (n = 5), arthritis (n = 3), catheter-related (n = 2), pneumonia (n = 2), or other (n = 6). There were no fatalities. Several patients had animal contacts but there were no indications of clonal outbreaks. Copyright © 2016 Elsevier Inc. All rights reserved.

  19. Outbreak of Streptococcus pneumoniae in a Psychiatric Unit

    Centers for Disease Control (CDC) Podcasts

    2012-11-02

    Dr. Katherine Fleming-Dutra, an epidemiologist at CDC, discusses her investigation of a Streptococcus pneumoniae outbreak in a pediatric psychiatric unit.  Created: 11/2/2012 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID); National Center for Immunization and Respiratory Diseases (NCIRD).   Date Released: 11/5/2012.

  20. Verrucous endocarditis associated with Streptococcus bovis in mink (Mustela vison)

    DEFF Research Database (Denmark)

    Pedersen, Karl; Jørgensen, J.C.; Dietz, Hans-Henrik

    2003-01-01

    Between 1998 and 2001, mortalities due to verrucous endocarditis were experienced at several mink farms. Gram-positive cocci were isolated from the endocardium of all the animals examined but not always from other internal organs. Almost all the isolates were identified as Streptococcus bovis and...

  1. Bioenergetic Consequences of Lactose Starvation for Continuously Cultured Streptococcus cremoris

    NARCIS (Netherlands)

    Poolman, Bert; Smid, Eddy J.; Veldkamp, H.; Konings, Wil N.

    Streptococcus cremoris cells that had been grown in a chemostat were starved for lactose. The viability of the culture remained essentially constant in the first hours of starvation and subsequently declined logarithmically. The viability pattern during starvation varied with the previously imposed

  2. Cell Wall-Associated Proteases of Streptococcus cremoris Wg2

    NARCIS (Netherlands)

    Hugenholtz, J; van Sinderen, Douwe; Kok, Jan; Konings, Wilhelmus

    Two components of the proteolytic system, proteins A and B, have been studied in Streptococcus cremoris Wg2 by immunological methods. The components could not be separated by standard chromatography techniques because both proteins had almost identical molecular weights (about 140,000) and

  3. Community-acquired Streptococcus viridans pneumonia in a healthy child.

    Science.gov (United States)

    Liaw, Fang-Yih; Wang, Chih-Chien; Chang, Yaw-Wen; Chen, Shyi-Jou

    2012-04-01

    Streptococcus viridans is usually considered to be nonpathogenic in healthy patients. Some strains become penicillin-resistant and cause life-threatening infections in immuno-compromised patients. We report an immunocompetent boy who had community-acquired S. viridans pneumonia that was resistant to penicillin. Clinicians should note local patterns of virulence and antibiotic resistance in S. viridans and adjust treatment strategies accordingly.

  4. Mutacin II, a Bactericidal Lantibiotic from Streptococcus mutans

    NARCIS (Netherlands)

    Chikindas, Michael L.; Novák, Jan; Driessen, Arnold J.M.; Konings, Wilhelmus; Schilling, Kurt M.; Caufield, Page W.

    1995-01-01

    Mutacin II is a lantibiotic that is produced by group II Streptococcus mutans, it inhibits the growth of other streptococci as well as many other gram-positive microorganisms by a hitherto unknown mechanism, Mutacin LI possesses bactericidal activity against susceptible cells. It transiently

  5. Anti-Streptococcus pyogenes Activity of Selected Medicinal Plant ...

    African Journals Online (AJOL)

    Original Research Article. Anti-Streptococcus pyogenes Activity of Selected. Medicinal Plant Extracts Used in Thai Traditional Medicine. Surasak Limsuwan1 and Supayang P Voravuthikunchai2*. 1Faculty of Traditional Thai Medicine and Natural Products Research Center of Excellence, 2Department of Microbiology and.

  6. Detection of Streptococcus iniae and Lactococcus garvieae by ...

    African Journals Online (AJOL)

    Streptococcosis is one of the most important bacterial diseases in farmed salmonid fishes. Streptococcus iniae and Lactococcus garvieae are known as the major pathogens of streptococcosis and lactococcosis in the rainbow trout, Oncorhynchus mykiss. The present study accomplished the detection of the two mentioned ...

  7. Plasmid mediated enhancement of uv resistance in Streptococcus faecalis

    International Nuclear Information System (INIS)

    Miehl, R.; Miller, M.; Yasbin, R.E.

    1980-01-01

    A 38.5-Mdal plasmid of Streptococcus faecalis subdp. zymogenes has been shown to enhance survival following uv irradiation. In addition, the presence of this plasmid increases the mutation frequencies following uv irradiation and enhanced W-reactivation. The data presented indicate that S. faecalis has an inducible error-prone repair system and that the plasmid enhances these repair functions

  8. Streptococcus agalactiae Serotype IV in Humans and Cattle, Northern Europe

    DEFF Research Database (Denmark)

    Lyhs, Ulrike; Kulkas, Laura; Katholm, Jorgen

    2016-01-01

    Streptococcus agalactiae is an emerging pathogen of nonpregnant human adults worldwide and a reemerging pathogen of dairy cattle in parts of Europe. To learn more about interspecies transmission of this bacterium, we compared contemporaneously collected isolates from humans and cattle in Finland...

  9. Rate of isolation of streptococcus species from children with ...

    African Journals Online (AJOL)

    Background: Streptococcus species are among the commonest bacterial causes of childhood morbidity in developing countries. Streptococcal diseases in children have not been as well characterized in Nigeria as it has been in industrialized countries. The rudimentary nature of public health surveillance makes the true ...

  10. Different bacteriocin activities of Streptococcus mutans reflect distinct phylogenetic lineages

    DEFF Research Database (Denmark)

    Balakrishnan, M; Simmonds, RS; Kilian, Mogens

    2002-01-01

    Bacteriocins produced by mutans streptococci are known as mutacins. In this study 16 broadly active mutacin-producing Streptococcus mutans strains from New Zealand, North America and Europe were classified into four groups (A-D) on the basis of differences in their activity in deferred antagonism...

  11. Thalamic abscess caused by a rare pathogen: streptococcus ...

    African Journals Online (AJOL)

    Streptococcus constellatus is a microorganism that lives commensally in the oropharyngeal region, urogenital region, and intestinal tract. However, it can cause infection in patients with certain predisposing factors. Rarely, this microorganism can cause a brain abscess. Thalamic localization of brain abscesses is much rarer ...

  12. Serological identification of Streptococcus sanguis and Str mitior.

    Science.gov (United States)

    Ball, L C

    1985-04-01

    A total of 165 strains of Streptococcus sanguis and Str mitior were selected on the basis of their biochemical reactions using established identification procedures. These strains were also classified using API Database and were then screened against five candidate grouping sera. Biochemical tests and serological identification were in general complementary, but no regular associations between biotype and serological reaction were observed.

  13. Serological identification of Streptococcus sanguis and Str mitior.

    OpenAIRE

    Ball, L C

    1985-01-01

    A total of 165 strains of Streptococcus sanguis and Str mitior were selected on the basis of their biochemical reactions using established identification procedures. These strains were also classified using API Database and were then screened against five candidate grouping sera. Biochemical tests and serological identification were in general complementary, but no regular associations between biotype and serological reaction were observed.

  14. A psicologia de Tomás de Aquino: a vontade teleologicamente orientada pelo intelecto

    OpenAIRE

    Oliveira, Cláudio Ivan de

    2009-01-01

    Conceitos psicológicos presentes na psicologia contemporânea foram objeto de ampla discussão na teologia medieval, que produziu tradições que influenciam a psicologia moderna. Abordamos a psicologia de Tomás de Aquino. Nossa hipótese é que Tomás de Aquino é representante da psicologia intelectualista, mas incorporou a discussão sobre a vontade, introduzida pelo pensamento paulinoagostiniano e desconhecida pelo intelectualismo grego. No desenvolvimento de sua psicologia da relação entre intele...

  15. Taxonomy of the Anginosus group of the genus Streptococcus and description of Streptococcus anginosus subsp. whileyi subsp. nov. and Streptococcus constellatus subsp. viborgensis subsp. nov.

    Science.gov (United States)

    Jensen, Anders; Hoshino, Tomonori; Kilian, Mogens

    2013-07-01

    The Anginosus group of the genus Streptococcus has been the subject of much taxonomic confusion, which has hampered the full appreciation of its clinical significance. The purpose of this study was to critically re-examine the taxonomy of the Anginosus group, with special attention to β-haemolytic, Lancefield group C strains, using multilocus sequence analysis (MLSA) combined with 16S rRNA gene sequence and phenotypic analyses. Phylogenetic analysis of concatenated sequences of seven housekeeping genes previously used for examination of viridans streptococci distinguished seven distinct and coherent clusters in the Anginosus group. Analyses of 16S rRNA gene sequences and phenotypic characters supported the MLSA clustering and currently recognized taxa of the Anginosus group. Single gene analyses showed considerable allele sharing between species, thereby invalidating identification based on single-locus sequencing. Two novel clusters of β-haemolytic, Lancefield group C strains within the Streptococcus constellatus and Streptococcus anginosus species and isolated from patients with sore throat showed sufficient phylogenetic distances from other clusters to warrant status as novel subspecies. The novel cluster within S. anginosus was identified as the previously recognized DNA homology cluster, DNA group 2. The names S. anginosus subsp. whileyi subsp. nov. (type strain CCUG 39159(T) = DSM 25818(T) = SK1267(T)) and S. constellatus subsp. viborgensis subsp. nov. (type strain SK1359(T) = CCUG 62387(T) = DSM 25819(T)) are proposed.

  16. Liposome-enhanced transformation of Streptococcus lactis and plasmid transfer by intergeneric protoplast fusion of Streptococcus lactis and Bacillus subtilis

    NARCIS (Netherlands)

    Vossen, Jos M.B.M. van der; Kok, Jan; Lelie, Daniel van der; Venema, Gerhardus

    An efficient protoplast transformation system and a procedure of plasmid transfer by means of protoplast fusion is described for Streptococcus lactis. Protoplasts of S. lactis IL1403 and S. lactis MG1363 were transformed by pGK12 [2.9 MDa erythromycin resistance (Emr)] with an efficiency of 3 × 10^5

  17. [THE DIAGNOSTIC APPROACHES TO VERIFICATION OF STREPTOCOCCUS INFECTION IN PATIENTS WITH INFECTIOUS MONONUCLEOSIS].

    Science.gov (United States)

    Kim, M A; Labushkina, A V; Simovanian, E N; Kharseeva, G G

    2015-11-01

    The Rostovskii state medical university of Minzdrav of Russia, 344022 Rostov-on-Don, Russia The analysis is applied concerning significance of laboratory techniques of verification of streptococcus infection (bacteriological analysis, detection of anti-streptolysin O in pair serums) in 148 patients with infectious mononucleosis aged from 3 to 15 years. The content of anti-streptolysin O exceeded standard in 41 ± 4.8% of patients with concomitant in acute period and in 49.5 ± 4.9% during period of re-convalescence. This data differed from analogous indicator in patients with negative result of examination on streptococcus infection independently of period of disease (9.3 ± 2.8%). The exceeding of standard of anti-streptolysin O was detected more frequently (t ≥ 2, P ≥ 95%) in patients with isolation of Streptococcus pyogenes (56.9 ± 5.8%) than in patients with Streptococcus viridans (31.2 ± 6.5%). The concentration of anti-streptolysin 0 in patients with concomitant streptococcus infection varied within limits 200-1800 IE/ml. The minimal level of anti-streptolysin O (C = 200 IE/mI) was detected independently of type of isolated Streptococcus and period of disease. The high levels of anti-streptolysin O were observed exclusively in patients with isolation of Streptococcus pyogenes. In blood serum ofpatient with concomitant streptococcus infection (Streptococcus pyogenes + Streptococcus viridans) increasing of level of anti-streptolysin O was detected in dynamics of diseases from minimal (C = 200 IE/ ml) to moderately high (200 streptococcus infection in patients with infectious mononucleosis the anamnesis data is to be considered. The complex bacteriological and serological examination ofpatients is to be implemented This is necessary for early detection ofpatients with streptococcus infection and decreasing risk of formation of streptococcus carrier state.

  18. Meningitis por Streptococcus suis en un paciente inmunocompetente Streptococcus suis meningitis in an immunocompetent patient

    Directory of Open Access Journals (Sweden)

    A. Nagel

    2008-09-01

    Full Text Available Se describe un caso de meningitis por Streptococcus suis en un paciente inmunocompetente. Presentaba astenia, debilidad generalizada, fiebre (39 °C, vómitos, deterioro del sensorio y desorientación témporo-espacial. Los cultivos de sangre (2/2 y de líquido cefalorraquídeo fueron positivos. La identificación preliminar se realizó utilizando las pruebas bioquímicas convencionales y fue completada en el Servicio Bacteriología Especial del INEI-ANLIS "Dr. Carlos G. Malbrán". Se comenzó el tratamiento con ampicilina y ceftriaxona. El microorganismo aislado demostró sensibilidad a ampicilina, cefotaxima y vancomicina. El paciente evolucionó favorablemente, pero se comprobó leve hipoacusia. Reingresó a los 4 meses con marcha atáxica, anacusia en oído izquierdo e hipoacusia en oído derecho. Continúa con seguimiento neurológico y audiométrico. Retrospectivamente se constató el contacto del paciente con cerdos. Se destaca la importancia de la anamnesis para alertar la sospecha de este agente etiológico en meningitis y bacteriemias.A case of Streptococcus suis meningitis is described in an immunocompetent patient presenting asthenia, general weakness, fever, vomiting, sensory deterioration and temporospatial disorder. The cerebrospinal fluid and two blood cultures (2/2 bottles were positive. The isolate was preliminary identified by conventional biochemical tests, and the identification was completed at the Special Bacteriology Service of INEI-ANLIS "Dr. Carlos G. Malbrán". Ampicillin and ceftriaxone treatment was initiated. The isolate was susceptible to ampicillin, cefotaxime and vancomycin. The patient experienced a good outcome but suffered hearing loss. However, after four months he returned with walking ataxia, deafness in his left ear, and hearing loss in the right ear. The patient’s retrospective exposure to pigs had been verified. It is important to evaluate predisposing and epidemiologic factors in order to alert about

  19. Comparison of transmission dynamics between Streptococcus uberis and Streptococcus agalactiae intramammary infections.

    Science.gov (United States)

    Leelahapongsathon, Kansuda; Schukken, Ynte Hein; Pinyopummintr, Tanu; Suriyasathaporn, Witaya

    2016-02-01

    The objectives of study were to determine the transmission parameters (β), durations of infection, and basic reproductive numbers (R0) of both Streptococcus agalactiae and Streptococcus uberis as pathogens causing mastitis outbreaks in dairy herds. A 10-mo longitudinal study was performed using 2 smallholder dairy herds with mastitis outbreaks caused by Strep. agalactiae and Strep. uberis, respectively. Both herds had poor mastitis control management and did not change their milking management during the entire study period. Quarter milk samples were collected at monthly intervals from all lactating animals in each herd for bacteriological identification. The durations of infection for Strep. uberis intramammary infection (IMI) and Strep. agalactiae IMI were examined using Kaplan-Meier survival curves, and the Kaplan-Meier survival functions for Strep. uberis IMI and Strep. agalactiae IMI were compared using log rank survival-test. The spread of Strep. uberis and Strep. agalactiae through the population was determined by transmission parameter, β, the probability per unit of time that one infectious quarter will infect another quarter, assuming that all other quarters are susceptible. For the Strep. uberis outbreak herd (31 cows), 56 new infections and 28 quarters with spontaneous cure were observed. For the Strep. agalactiae outbreak herd (19 cows), 26 new infections and 9 quarters with spontaneous cure were observed. The duration of infection for Strep. agalactiae (mean=270.84 d) was significantly longer than the duration of infection for Strep. uberis (mean=187.88 d). The transmission parameters (β) estimated (including 95% confidence interval) for Strep. uberis IMI and Strep. agalactiae IMI were 0.0155 (0.0035-0.0693) and 0.0068 (0.0008-0.0606), respectively. The R0 (including 95% confidence interval) during the study were 2.91 (0.63-13.47) and 1.86 (0.21-16.61) for Strep. uberis IMI and Strep. agalactiae IMI, respectively. In conclusion, the transmission

  20. Molecular identification of Streptococcus equi subsp. equi and Streptococcus equi subsp. zooepidemicus in nasal swabs samples from horses suffering respiratory infections in Iran.

    Science.gov (United States)

    Jannatabadi, A A; Mohammadi, G R; Rad, M; Maleki, M

    2008-02-01

    The objective of this study was to evaluate the existence of Streptococcus equi subsp. equi and Streptococcus equi subsp. zooepidemicus as probable agents associated with naturally occurring infection of the equine upper respiratory disease in Mashhad area. Nasal swabs samples from thirty horses with upper respiratory tract infections were collected. The bacteria isolated and identified were Streptococcus equi subsp. equi (1 isolate), Streptococcus equi subsp. zooepidemicus (25 isolates), Pasteurella sp. (11 isolates), Staphylococcus sp. (17 isolates), Bacillus sp. (4 isolates), Pseudomonas sp. (4 isolates), Proteus sp. (1 isolate), Neisseria sp. (1 isolate) and E. coli (1 isolate). All 25 isolates of Streptococcus equi subsp. zooepidemicus and the isolate of Streptococcus equi subsp. equi were characterized by biochemical tests and molecular techniques. For molecular identification of the subspecies S. equi and S. zooepidemicus two genomic region SeM and sodA were amplified. This study is the first report of molecular identification of Streptococcus equi subsp. equi and Streptococcus equi subsp. zooepidemicus in Iran.

  1. Os encantos da Veneza Americana e da propaganda pelo cinema: os filmes financiados pelo governo Sergio Loreto em Pernambuco (1922-1926

    Directory of Open Access Journals (Sweden)

    Luciana Corrêa de Araújo

    2013-06-01

    Full Text Available Este artigo aborda a produção cinematográfica financiada pelo governo Sergio Loreto em Pernambuco (1922-1926. Por meio de textos históricos, pesquisa em periódicos e análise fílmica, pretendemos destacar a relevância do estímulo oficial ao incipiente meio cinematográfico local e analisar como se constroem, nos filmes, as relações entre estratégias de propaganda e procedimentos estéticos e narrativos.

  2. Avaliação não invasiva de pacientes submetidos à intervenção percutânea no infarto do miocárdio

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    Rica Dodo Delmar Buchler

    2010-10-01

    Full Text Available FUNDAMENTO: A reestenose pós-intervenção coronariana percutânea primária permanece um problema de relevância clínica, mesmo com o implante de stents. A capacidade das provas não invasivas para detecção de reestenose não foi totalmente demonstrada. OBJETIVO: Avaliar a habilidade do teste ergométrico (TE e da cintilografia de perfusão miocárdica (CPM no diagnóstico de reestenose em pacientes com infarto agudo do miocárdio, e supradenivelamento do segmento ST, submetidos à angioplastia coronariana percutânea primária (ACPP, com implante de stent nas primeiras 12 horas de evolução. MÉTODOS: De Ago/2003-Jan/2006, foram selecionados 64 pacientes (ps (56,2 ± 10,2 anos, 53 homens submetidos à ACPP. Apenas ps com fração de ejeção do ventrículo esquerdo > 40,0%, definida por ecocardiograma de repouso, foram incluídos. Teste ergométrico, com as 12 derivações do ECG associadas a precordiais direitas, e CPM foram realizados 6 semanas, 6 meses e um ano após o tratamento. Foi realizada cinecoronariografia no 6º mês. RESULTADOS: Doença uniarterial ocorreu em 46,9% dos ps, sendo a artéria descendente anterior tratada em 48,4%. Reestenose angiográfica ocorreu em 28,8%. Sensibilidade, especificidade, valor preditivo positivo (VPP, valor preditivo negativo (VPN e acurácia do TE para detecção de reestenose não foram significativos. A adição de derivações precordiais direitas não proporcionou informações adicionais. Sensibilidade, especificidade, VPP, VPN e acurácia da CPM apresentaram correlação com reestenose apenas no 6º mês, considerando-se summed difference score > 2 (p = 0,006 e > 4 (p = 0,014. CONCLUSÃO: O TE não discriminou reestenose. A CPM realizada no 6º mês foi relacionada à reestenose e mostrou-se útil durante a evolução.

  3. Comunicación entre equipo de enfermería y pacientes con ventilación mecánica invasiva en una unidad de paciente crítico

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    Noelia Pilar Rojas

    2014-01-01

    Full Text Available La comunicación se basa en la utilización de herramientas e involucra la interacción recíproca de dos interlocutores. En las Unidades de Cuidados Intensivo (UCI, la aplicación de ventilación mecánica invasiva (VMI, genera condiciones especiales en el paciente que difi- cultan su comunicación. La ausencia de comunicación entre el equipo de enfermería (EE y los pacientes con VMI es atribuida a múltiples barreras y produce efectos negativos que afectan la recuperación y el bienestar. Objetivo: conocer las características de la comunicación con pacientes con VMI que aplica elementos de la Teoría Fundada para el proceso de análisis y utilizó como técnica de recolecci ón de datos grupos focales de enfermeras y técnicos de enfermería que realizan cuidado directo a pacientes con VMI en una UCI. Método: investigación de diseño cualitativo, orientada por la Teoría Fundada, para el análisis y la asociación de conceptos, que utiliz ó grupos focales como técnica de recolección de la información. Resultados: si bien los hallazgos permiten describir las principales caracte- rísticas de la comunicación con estos pacientes identificando los medios y las formas utilizados por el EE para hacerlo, los mo mentos en que ocurre la comunicación, los beneficios y las barreras percibidas por el grupo de participantes, no se llega a establecer una categoría central con las estructuras y definiciones del proceso dentro de la misma, para lo que se requerirían nuevas investigaciones. Conclusión: a partir de estos hallazgos se espera contribuir al cuerpo de conocimientos de la disciplina de enfermería y fortalecer la gestión del cuidado que realiza el EE en las UCI.

  4. Evaluación hemodinámica no invasiva con cardiografía de impedancia: aplicaciones en falla cardíaca y en hipertensión arterial

    Directory of Open Access Journals (Sweden)

    Jon Kepa Balparda, MD

    2012-02-01

    Full Text Available La cardiografía de impendancia (CGI representa un método no invasivo para la evaluación del estado hemodinámico latido a latido. Aunque se introdujo por primera vez hace más de 40 años, la CGI ha mostrado un resurgimiento en la última década, a partir de una serie de estudios clínicos que han demostrado su precisión en la estimación del volumen latido, tanto contra el “gold-standard“invasivo (termodilución, como contra los métodos de referencia no invasivos (ecocardiografía. Diversos estudios demuestran la utilidad de esta técnica en el manejo del paciente con falla cardíaca y en el enfoque diagnóstico y terapéutico de la hipertensión arterial, por lo cual constituyen actualmente dos de las aplicaciones clínicas más importantes de la CGI. En falla cardiaca, los cambios en el volumen de líquido del tórax y del gasto cardíaco evaluados por CGI, han demostrado ser predictores de descompensación aguda, incluso semanas antes del inicio de la sintomatología respiratoria; además, permiten identificar el origen cardiogénico o respiratorio de la disnea cuando el examen físico y los demás paraclínicos no son concluyentes. En los pacientes con hipertensión arterial no controlada o resistente, la CGI permite realizar una mejor caracterización del fenotipo hipertensivo y elegir la estrategia farmacológica más específica para intervenir la alteración hemodinámica predominante (resistencia vascular vs. gasto cardiaco elevado. En este artículo se realiza una revisión de los principios biofísicos de la CGI y su utilidad en la evaluación no invasiva del estado hemodinámico, así como una evaluación crítica de la literatura que da soporte a su aplicación clínica en el tratamiento de la falla cardíaca y la hipertensión arterial.

  5. Ruptura da artéria pulmonar pelo cateter de Swan-Ganz: relato de caso Pulmonary artery rupture by the Swan-Ganz catheter: case report

    Directory of Open Access Journals (Sweden)

    Marcos Coutinho Schechter

    2009-06-01

    Full Text Available O cateter de artéria pulmonar é frequentemente usado na monitorização de pacientes durante o transplante hepático. O advento de métodos menos invasivos para estimar o débito cardíaco e a pressão de oclusão da artéria pulmonar, aliado ao fracasso de estudos randomizados em demonstrar redução da mortalidade com o uso do cateter de artéria pulmonar, reduziu sua aplicabilidade. A ruptura de artéria pulmonar pelo uso do cateter de artéria pulmonar é complicação rara, porém grave. Objetivamos relatar a ruptura de artéria pulmonar como complicação do cateter de artéria pulmonar, revendo a abordagem clínica e discutindo a monitorização hemodinâmica com o cateter de artéria pulmonar no transplante hepático. Paciente do sexo feminino, 56 anos, portadora de vírus da hepatite C e cirrose (escore MELD 26, apresentou quadro de encefalopatia hepática. Foi realizado transplante hepático sob monitorização invasiva com cateter de artéria pulmonar. Nas primeiras 24 horas pós-operatórias apresentou instabilidade hemodinâmica, queda do hematócrito e parada cárdio-respiratória. Após a ressuscitação cárdio-pulmonar, foi solicitado um ecocardiograma trans-torácico que evidenciou hemopericárdio. Mesmo após a pericardiocentese a paciente evoluiu com hemopericárdio recidivo. A angiografia pulmonar não evidenciou lesões e o diagnóstico de ruptura de artéria pulmonar só foi feito através da esternotomia exploratória. As complicações pelo uso do cateter de artéria pulmonar são infrequentes, entretanto associadas a grande morbimortalidade. A redução do uso do cateter de artéria pulmonar diminuiu as complicações em diversas situações clínicas, entretanto o risco-benefício do uso do cateter de artéria pulmonar para transplante de fígado não é conhecido. Novos estudos comparando o cateter de artéria pulmonar a métodos não invasivos da avaliação da pressão de oclusão da artéria pulmonar devem ser

  6. Novel molecular method for identification of Streptococcus pneumoniae applicable to clinical microbiology and 16S rRNA sequence-based microbiome studies

    DEFF Research Database (Denmark)

    Scholz, Christian F. P.; Poulsen, Knud; Kilian, Mogens

    2012-01-01

    The close phylogenetic relationship of the important pathogen Streptococcus pneumoniae and several species of commensal streptococci, particularly Streptococcus mitis and Streptococcus pseudopneumoniae, and the recently demonstrated sharing of genes and phenotypic traits previously considered spe...

  7. Clinical behavior of Streptococcus pneumoniae meningoencephalitis Comportamiento clinico y terapéutico de la meningoencefalitis por Streptococcus pneumoniae

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    Raisa Bu-Coifiu Fanego

    2009-12-01

    Full Text Available OBJECTIVE: There was an increased number of cases of meningoencephalitis caused by Streptococcus pneumoniae, after the successful vaccination campaigns against Neisseria meningitidis and Haemophilus influenzae. This paper aims at describing the clinical characteristics, the laboratory findings, the complications, and the therapeutic management of these patients, who have been suffering from this disease since 1993 to 2006. METHOD: Twelve children with Streptococcus pneumoniae meningoencephalitis admitted to the pediatric hospital of San Miguel del Padron, City of Havana in this period were assessed. RESULTS: Children under one year are the most frequently affected. Septic shock and brain edema were the most severe complications. Three patients died, implying that this disease has a serious course. Early treatment of brain edema is very important to reduce mortality. The elective drugs for treatment of these cases of Streptococcus pneumoniae meningoencephalitis were vancomycin combined with cephalosporin, cefotaxime or ceftriaxone type. CONCLUSION: Patients with Streptococcus pneumoniae meningoencephalitis show clinical characteristics, complications, and sequels that are different to other bacterial meningoencephalitis, meaning that they could be helpful for physicians considering the differential diagnosis of meningoencephalitis.OBJETIVO: Existe un incremento de la meningoencefalitis producida por Streptococcus pneumoniae, después de las campañas exitosas de vacunación contra Neisseria meningitidis y Haemophilus influenzae. El objetivo de este trabajo es describir las caracteristicas clinicas, los hallazgos de laboratorio, las complicaciones y el manejo terapéutico de los pacientes que sufrieron esta enfermedad desde 1993 a 2006. MÉTODO: Se estudiaron doce niños con meningoencefalitis por Streptococcus pneumoniae ingresados en el Hospital Pediátrico de San Miguel del Padrón, Ciudad de La Habana en este periodo. RESULTADOS: Los ni

  8. Revascularização do miocárdio por técnica minimamente invasiva: o que aprendemos após 3 anos com seu emprego

    Directory of Open Access Journals (Sweden)

    JATENE Fabio B.

    1999-01-01

    Full Text Available Objetivo: Com as avanços no tratamento das lesões obstrutivas das artérias coronárias pela hemodinâmica, torna-se atraente a revascularização do miocárdio pelas técnicas minimamente invasivas. O objetivo deste trabalho é o relato de nossa experiência após 3 anos com o uso desta técnica, analisando-se a utilização de estabilizador mecânico de suturas, as vias de acesso e os resultados obtidos. Casuística e Métodos: Foram operados 120 pacientes, sendo 86 do sexo masculino, com idades variando de 30 a 83 anos (média de 61,2 anos. Todos eram portadores de lesões coronarianas obstrutivas acima de 80%. Os uniarteriais eram portadores de lesões, de 79,2% no ramo interventricular anterior (RIA, 1,6% dos ramos diagonais (Dg e 0,8% da artéria coronária direita (CD. Os biarteriais apresentavam lesões de 17,6% RIA e Dg e 0,8% RIA e Marginal esquerda da artéria circunflexa (MgE. Foram utilizadas duas vias de acesso: para lesões isoladas do RIA foi utilizada preferencialmente a minitoracotomia anterior de 8 cm no quarto espaço intercostal esquerdo. Para lesões associadas RIA/Dg foi utilizada incisão longitudinal mediana limitada de 10 a 12 cm, com secção total do esterno e afastamento de 5 a 6 cm de suas bordas. Não foi utilizada circulação extracorpórea e não houve manipulação ou abordagem da aorta. Foram usados betabloqueadores e vasodilatadores endovenosos e, para realização das anastomoses, torniquetes proximais em todos os casos, além do CO2 para manter o campo operatório livre de sangue. Nos últimos 82 pacientes utilizou-se o estabilizador mecânico de sutura para redução regional dos batimentos cardíacos. Em 22 (18,4% pacientes a ATIE foi alongada com segmento de veia safena, artéria radial ou epigástrica. Na revascularização para RIA e Dg foi utilizado "Y" artificial a partir da ATIE com enxerto venoso ou arterial. Estudo cinecoronariográfico foi realizado entre o 1º e 3º dias de pós-operatório em

  9. Streptococcus agalactiae infection in domestic rabbits, Oryctolagus cuniculus.

    Science.gov (United States)

    Ren, S Y; Geng, Y; Wang, K Y; Zhou, Z Y; Liu, X X; He, M; Peng, X; Wu, C Y; Lai, W M

    2014-12-01

    Streptococcus agalactiae (Group B streptococcus, GBS) has emerged as an important pathogen that affects humans and animals, including aquatic species. In August 2011, a severe infectious disease affecting rabbits, which caused 42% mortality, occurred in Mianyang, Sichuan Province, China. The main clinical signs included acute respiratory distress syndrome, fever, paddling and convulsions. A Gram-positive, chain-forming coccus was isolated from the primary organs and tissues of diseased rabbits and then identified as S. agalactiae by morphology, biochemical and physiological characteristics, 16S rDNA and gyrB gene sequences analysis. All isolates of S. agalactiae showed a similar antibiotic susceptibility, which were sensitive to florfenicol, ampicillin,gentamicin and norfloxacin, as well as being resistant to penicillin, amoxicillin and tetracycline. To our knowledge, this is the first report on S. agalactiae natural infection in domestic rabbits. © 2013 Blackwell Verlag GmbH.

  10. Streptococcus Constellatus Spondylodiscitis in a Teenager: A Case Report

    Directory of Open Access Journals (Sweden)

    Lim SW

    2017-11-01

    Full Text Available Streptococcus constellatus is an extremely rare cause of pyogenic spondylodiscitis. Literature search yielded only one case report in an elderly 72 years old man with spontaneous T10-T11 S. constellatus spondylodiscitis. It is virtually unheard of in young teenage. We report the case of a 14 years old male teenager who presented with worsening low back pain for one year with no neurological deficit. Imaging studies were consistent with features of L4-L5 spondylodiscitis. CT guided biopsy grew a pure culture of streptococcus constellatus sensitive to penicillin and erythromycin. He showed full recovery with six weeks of intravenous antibiotics. Due to the insidious onset, this case highlight the importance of high clinical suspicion and early diagnosis, with image guided biopsy followed by treatment with appropriate intravenous antibiotics to enable full recovery without further neurological deterioration.

  11. Significant variation in transformation frequency in Streptococcus pneumoniae

    Science.gov (United States)

    Evans, Benjamin A; Rozen, Daniel E

    2013-01-01

    The naturally transformable bacterium Streptococcus pneumoniae is able to take up extracellular DNA and incorporate it into its genome. Maintaining natural transformation within a species requires that the benefits of transformation outweigh its costs. Although much is known about the distribution of natural transformation among bacterial species, little is known about the degree to which transformation frequencies vary within species. Here we find that there is significant variation in transformation frequency between strains of Streptococcus pneumoniae isolated from asymptomatic carriage, and that this variation is not concordant with isolate genetic relatedness. Polymorphism in the signalling system regulating competence is also not causally related to differences in transformation frequency, although this polymorphism does influence the degree of genetic admixture experienced by bacterial strains. These data suggest that bacteria can evolve new transformation frequencies over short evolutionary timescales. This facility may permit cells to balance the potential costs and benefits of transformation by regulating transformation frequency in response to environmental conditions. PMID:23303370

  12. Neutrophil evasion strategies by Streptococcus pneumoniae and Staphylococcus aureus.

    Science.gov (United States)

    Lewis, Megan L; Surewaard, Bas G J

    2018-03-01

    Humans are well equipped to defend themselves against bacteria. The innate immune system employs diverse mechanisms to recognize, control and initiate a response that can destroy millions of different microbes. Microbes that evade the sophisticated innate immune system are able to escape detection and could become pathogens. The pathogens Streptococcus pneumoniae and Staphylococcus aureus are particularly successful due to the development of a wide variety of virulence strategies for bacterial pathogenesis and they invest significant efforts towards mechanisms that allow for neutrophil evasion. Neutrophils are a primary cellular defense and can rapidly kill invading microbes, which is an indispensable function for maintaining host health. This review compares the key features of Streptococcus pneumoniae and Staphylococcus aureus in epidemiology, with a specific focus on virulence mechanisms utilized to evade neutrophils in bacterial pathogenesis. It is important to understand the complex interactions between pathogenic bacteria and neutrophils so that we can disrupt the ability of pathogens to cause disease.

  13. One More Disguise in the Stealth Behavior of Streptococcus pyogenes.

    Science.gov (United States)

    Fischetti, Vincent A; Dale, James B

    2016-05-17

    The ability to hide in the animal kingdom is essential for survival; the same is true for bacteria. Streptococcus pyogenes is considered one of the more successful stealth bacteria in its production of a hyaluronic acid capsule that is chemically identical to the hyaluronic acid lining human joints. It has also acquired the capacity to enter eukaryotic cells to avoid the onslaught of the host's immune defenses, as well as drugs. From this intracellular vantage point, it may remain dormant from days to weeks, only to cause disease again at a later time, perhaps causing a relapse in a drug-treated patient. We now learn that it is able to enter macrophages as well, enabling the Streptococcus to use this "Trojan horse" approach to be transported to distant sites in the body. Copyright © 2016 Fischetti and Dale.

  14. One More Disguise in the Stealth Behavior of Streptococcus pyogenes

    Directory of Open Access Journals (Sweden)

    Vincent A. Fischetti

    2016-05-01

    Full Text Available The ability to hide in the animal kingdom is essential for survival; the same is true for bacteria. Streptococcus pyogenes is considered one of the more successful stealth bacteria in its production of a hyaluronic acid capsule that is chemically identical to the hyaluronic acid lining human joints. It has also acquired the capacity to enter eukaryotic cells to avoid the onslaught of the host’s immune defenses, as well as drugs. From this intracellular vantage point, it may remain dormant from days to weeks, only to cause disease again at a later time, perhaps causing a relapse in a drug-treated patient. We now learn that it is able to enter macrophages as well, enabling the Streptococcus to use this “Trojan horse” approach to be transported to distant sites in the body.

  15. Status of research and development of vaccines for Streptococcus pyogenes.

    Science.gov (United States)

    Steer, Andrew C; Carapetis, Jonathan R; Dale, James B; Fraser, John D; Good, Michael F; Guilherme, Luiza; Moreland, Nicole J; Mulholland, E Kim; Schodel, Florian; Smeesters, Pierre R

    2016-06-03

    Streptococcus pyogenes is an important global pathogen, causing considerable morbidity and mortality, especially in low and middle income countries where rheumatic heart disease and invasive infections are common. There is a number of promising vaccine candidates, most notably those based on the M protein, the key virulence factor for the bacterium. Vaccines against Streptococcus pyogenes are considered as impeded vaccines because of a number of crucial barriers to development. Considerable effort is needed by key players to bring current vaccine candidates through phase III clinical trials and there is a clear need to develop a roadmap for future development of current and new candidates. Copyright © 2016 World Health Organization. Published by Elsevier Ltd.. All rights reserved.

  16. Evolutionary Constraints Shaping Streptococcus pyogenes-Host Interactions.

    Science.gov (United States)

    Wilkening, Reid V; Federle, Michael J

    2017-07-01

    Research on the Gram-positive human-restricted pathogen Streptococcus pyogenes (Group A Streptococcus, GAS) has long focused on invasive illness, the most severe manifestations of GAS infection. Recent advances in descriptions of molecular mechanisms of GAS virulence, coupled with massive sequencing efforts to isolate genomes, have allowed the field to better understand the molecular and evolutionary changes leading to pandemic strains. These findings suggest that it is necessary to rethink the dogma involving GAS pathogenesis, and that the most productive avenues for research going forward may be investigations into GAS in its 'normal' habitat, the nasopharynx, and its ability to either live with its host in an asymptomatic lifestyle or as an agent of superficial infections. This review will consider these advances, focusing on the natural history of GAS, the evolution of pandemic strains, and novel roles for several key virulence factors that may allow the field to better understand their physiological role. Copyright © 2017 Elsevier Ltd. All rights reserved.

  17. Streptococcus viridans has a leading role in rhinosinusitis complications.

    Science.gov (United States)

    Hwang, Siew Yoong; Tan, Kun Kiaang

    2007-05-01

    We sought to determine whether the bacteria in complicated rhinosinusitis were the typical acute rhinosinusitis triad of Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis. We also compared the difference in yield between infection sites and blood cultures. We performed a retrospective review of all patients who had required surgical intervention for rhinosinusitis complications over 7 years at a tertiary care pediatric hospital. There were a total of 28 patients during the review period. Twenty-five organisms were isolated from 21 patients, of which Streptococcus viridans formed 44% of the isolates (11 of the 25). The typical triad of bacteria only formed 20% of the isolates (5 of the 25), and none of these bacteria were found in the group with intracranial complications. Infection site cultures had a superior yield compared to blood cultures (p viridans is the leading cause of rhinosinusitis complications. It is not merely a commensal organism of the upper respiratory tract.

  18. Trovafloxacin Treatment of Viridans Group Streptococcus Experimental Endocarditis

    Science.gov (United States)

    Piper, Kerryl E.; Rouse, Mark S.; Ronningen, Karen L.; Steckelberg, James M.; Wilson, Walter R.; Patel, Robin

    2000-01-01

    The activity of trovafloxacin was compared with those of vancomycin and penicillin in a model of Streptococcus sanguis species group (trovafloxacin MIC, 0.125 μg/ml) and Streptococcus mitis species group (trovafloxacin MIC, 0.125 μg/ml) experimental endocarditis. Rabbits with catheter-induced aortic valve vegetations were given no treatment, trovafloxacin at 15 mg/kg of body weight three times a day (t.i.d.), vancomycin at 15 mg/kg twice a day, or penicillin at 1.2 × 106 IU t.i.d. After 3 days of treatment, the animals were sacrificed; cardiac valve vegetations were aseptically removed and cultured quantitatively. Penicillin was as active as vancomycin as measured by in vivo clearance of bacteria. Trovafloxacin was less active (P viridans group streptococci. PMID:10952616

  19. Reactive arthritis following Streptococcus viridans urinary tract infection.

    Science.gov (United States)

    Chou, Yen-Shou; Horng, Chi-Ting; Huang, Hsu-Shan; Hu, Shing-Chuan; Chen, Jian-Tong; Tsai, Ming-Ling

    2010-01-01

    To report a case with reactive arthritis (ReA) following Streptococcus viridans genitourinary infection. Case report. Clinical findings and treatment are presented. The 28-year-old man visited the authors' hospital due to ciliary injection and hypopyon over left eye. On examination, Behcet-mimicking symptoms were observed, such as genital and oral ulcers and arthritis. Furthermore, S. viridans was found in the urethral discharge culture. Under the impression of ReA, which was triggered by S. viridans, NSAID and antibiotics were prescribed. Complete resolution of ocular and systemic symptoms was achieved after 2 months of treatment. Streptococcus viridans is potential microorganisms of ReA. Careful survey and prompt treatment is necessary.

  20. Streptococcus Constellatus Spondylodiscitis in a Teenager: A Case Report.

    Science.gov (United States)

    Lim, S W; Lim, H Y; Kannaiah, T; Zuki, Z

    2017-11-01

    Streptococcus constellatus is an extremely rare cause of pyogenic spondylodiscitis. Literature search yielded only one case report in an elderly 72 years old man with spontaneous T10-T11 S. constellatus spondylodiscitis. It is virtually unheard of in young teenage. We report the case of a 14 years old male teenager who presented with worsening low back pain for one year with no neurological deficit. Imaging studies were consistent with features of L4-L5 spondylodiscitis. CT guided biopsy grew a pure culture of streptococcus constellatus sensitive to penicillin and erythromycin. He showed full recovery with six weeks of intravenous antibiotics. Due to the insidious onset, this case highlight the importance of high clinical suspicion and early diagnosis, with image guided biopsy followed by treatment with appropriate intravenous antibiotics to enable full recovery without further neurological deterioration.

  1. Distribusi Streptococcus mutans pada Tepi Tumpatan Glass Ionomer

    Directory of Open Access Journals (Sweden)

    Abdul Muthalib

    2015-10-01

    Full Text Available Secondary caries always occurs as a result of the filling not being hermetically. Purposes of this research is to prove whether there is a leak on the border of the tooth enamel and border between the Glass-ionomer filling with the Streptococcus mutans infection with parameter of SMAAPPI (Simplified S. mutans Approximal Plaque Index by Keeni et al, 1981. The subject of the research were 20 patients who came to the Dental Clinic at University of Indonesia with criteria possessing Glass-ionomer filling at the lower jaws. Collection of the samples were dental plaque gathered using a 1.5 mm excavator to scrape one way direction from the enamel, along the border between the enamel and Glass-ionomer filling and Glass-ionomer filling's surface. Isolation with medium transport sem-synthetic Cariostat and TSY20B and identification by using biochemical test. isolated colony strain local Streptococcus mutans from enamel, the border enamel and Glass-ionomer and the surface of the Glass-ionomer. The results were Streptococcus mutans were found from enamel 3006 colonies, on the border between the enamel and Glass-ionomer 143 colonies and on the surface of the Glss-ionomer 7291 colonies. Amoung of Streptococcus mutans colony obtained on the border of the enamel and Glass-ionomer were smaller compared to the surface of the Glass-ionomer and tooth enamel. Concluded that the leak of the filling was not caused by the number of distributed Streptooccus mutans colonies on the side, because the fluoroapatite fastener occurred due to the Glass-ionomer releasing in fluor along the border of the filling.

  2. Serotype-specific mortality from invasive Streptococcus pneumoniae disease revisited

    DEFF Research Database (Denmark)

    Martens, Pernille; Worm, Signe Westring; Lundgren, Bettina

    2004-01-01

    Serotype-specific mortality from invasive Streptococcus pneumoniae disease revisited.Martens P, Worm SW, Lundgren B, Konradsen HB, Benfield T. Department of Infectious Diseases 144, Hvidovre University Hospital, DK-2650 Hvidovre, Denmark. pernillemartens@yahoo.com BACKGROUND: Invasive infection w...... pneumococcal disease. The limitations of the current polysaccharide pneumococcal vaccine warrant the development of alternative vaccines. We suggest that the virulence of pneumococcal serotypes should be considered in the design of novel vaccines....

  3. Invasive Streptococcus pneumoniae in Children, Malawi, 2004–2006

    Science.gov (United States)

    Everett, Dean B.; Broughton, Caroline; Denis, Brigitte B.; Banda, Daniel L.; Carrol, Enitan D.; Parry, Christopher M.

    2011-01-01

    Of 176 invasive Streptococcus pneumoniae isolates from children in Malawi, common serotypes were 1 (23%), 6A/B (18%), 14 (6%), and 23F (6%). Coverage with the 7-valent pneumococcal conjugate vaccine (PCV) was 39%; PCV10 and PCV13 increased coverage to 66% and 88%, respectively. We found chloramphenicol resistance in 27% of isolates and penicillin nonsusceptibility in 10% (by using meningitis breakpoints); all were ceftriaxone susceptible. PMID:21749782

  4. Subacute bacterial endocarditis (SBE due to Streptococcus gordonii

    Directory of Open Access Journals (Sweden)

    Raffaella Battista

    2009-12-01

    Full Text Available Endocarditis is an inflammatory state of the endothelium that promotes thrombus formation and tissue damage on the surface of heart valves. Recent studies have reported endocarditis mortality rates ranging from 12% to 46% (2008. The Streptococcus gordonii is a normal inhabitant of the human oral cavity. It is a component of the microbial communities responsible of plaque formation, associated with dental caries and also regarded as the main causative agent in the development of subacute bacterial endocarditis (SBE.

  5. Structure of the nucleoid in cells of Streptococcus faecalis.

    OpenAIRE

    Daneo-Moore, L; Dicker, D; Higgins, M L

    1980-01-01

    The structure of the nucleoid of Streptococcus faecalis (ATCC 9790) was examined and compared in the unfixed and fixed states by immersive refractometry and electron microscopy. It appears from these studies that the nucleoid structure is much more centralized in unfixed chloramphenicol-treated (stationary-phase) cells than it is in cells in the exponential phase of growth. The more dispersed configuration of the exponential-phase nucleoid could be preserved by fixation in glutaraldehyde, but...

  6. Significant variation in transformation frequency in Streptococcus pneumoniae

    OpenAIRE

    Evans, Benjamin A; Rozen, Daniel E

    2013-01-01

    The naturally transformable bacterium Streptococcus pneumoniae is able to take up extracellular DNA and incorporate it into its genome. Maintaining natural transformation within a species requires that the benefits of transformation outweigh its costs. Although much is known about the distribution of natural transformation among bacterial species, little is known about the degree to which transformation frequencies vary within species. Here we find that there is significant variation in trans...

  7. [Antibiotics susceptibility of Streptococcus and Enterococcus: data of Onerba network].

    Science.gov (United States)

    Vachée, A; Varon, E; Jouy, E; Meunier, D

    2009-05-01

    This work was aimed to analyze trends in susceptibility to antibiotics among the main species of beta-hemolytic streptococci involved in community-acquired infections in human (Streptococcus pyogenes and Streptococcus agalactiae), or in animals (Streptococcus suis and Streptococcus uberis) and also among the main enterocci species, Enterococcus faecalis and Enterococcus faecium. Data were recorded since 1996 through the Onerba networks. S. pyogenes, as the other beta-hemolytic streptococci studied remained fully susceptible to beta-lactam antibiotics. However, susceptibility to macrolides is clearly decreasing in S. pyogenes. In 2002, only 62 to 65% of the strains according to the network considered, were susceptible to erythromycin. A similar trend was observed for S. agalactiae with only 75% of erythromycin susceptibility in 2002, and for both species isolated from animals S. suis and S. uberis, with respectively 35 and 76% of strains susceptible to erythromycin. In enterococci, susceptibility to beta-lactams remained stable between 2000 and 2004. Indeed, the susceptibility to aminopenicillins remained high in E. faecalis (about 98%), whereas the proportion of E. faecium isolates susceptible to these antibiotics were lower than 60%. From 1999 to 2004, various studies conducted in French hospitals showed that the vancomycin resistance among enterococci accounted for less than 2%. However, the recent emergence of glycopeptide resistant enterococci clusters in French hospitals is a matter of concern and emphasizes the need for an ongoing surveillance. Such trend in macrolide resistance among S. pyogenes or S. agalactiae should consequently lead to propose other alternatives in case of beta-lactam allergy, and for pharyngitis, to rethink the place of the culture for susceptibility testing.

  8. Bullous impetigo caused by Streptococcus salivarius: a case report.

    Science.gov (United States)

    Brook, I

    1980-01-01

    A 19-month-old child presented with bullous impetigo around the perineal region, penis, and left foot. Streptococcus salivarius was the only isolate recovered from the lesions. The child was treated with parenteral penicillin, debridement of the bulli, and local application of silver sulphadiazine cream. This case of bullous impetigo illustrates another aspect of the pathogenicity of Strep. salivarius. Images Fig. 1 Fig. 2 PMID:7002959

  9. Studies of Fibronectin-Binding Proteins of Streptococcus equi

    OpenAIRE

    Lannergård, Jonas; Flock, Margareta; Johansson, Staffan; Flock, Jan-Ingmar; Guss, Bengt

    2005-01-01

    Streptococcus equi subsp. equi is the causative agent of strangles, a disease of the upper respiratory tract in horses. The initiation of S. equi subsp. equi infection is likely to involve cell surface-anchored molecules mediating bacterial adhesion to the epithelium of the host. The present study describes the cloning and characterization of FNEB, a fibronectin-binding protein with cell wall-anchoring motifs. FNEB can thus be predicted as cell surface located, contrary to the two previously ...

  10. Survival of Streptococcus equi on surfaces in an outdoor environment

    Science.gov (United States)

    Weese, J. Scott; Jarlot, Capucine; Morley, Paul S.

    2009-01-01

    Management practices to prevent or control outbreaks of Streptococcus equi subsp. equi often include consideration of environment survival, but limited objective data are available. This study involved evaluation of S. equi persistence following inoculation of wood, metal, and rubber surfaces in an outdoor environment. Survival was short, ranging from equi is poor, and prolonged quarantine of outdoor areas, particularly areas exposed to the sun, is probably unnecessary. PMID:19949559

  11. Streptococcus group B positive mothers and neonatal pneumonia

    OpenAIRE

    Zisovska, Elizabeta; Pehcevska, Nevena

    2013-01-01

    Background: Maternal vaginal swabs positive for Streptococcus group B (GBS) can cause severe infections in newborns. The aims of this study were: to identufy the rate of neonatal pneumonia in GBS positive mothers, GBS negative mothers, and mothers with unknown bacterial status. The positive predictive value of GBS positive status for neonatal plenumonia is only 23,5%, but the negative predictive value is 91%, which means that the GBS negative mothers have really low risk for having baby w...

  12. Isolated Native Tricuspid Valve Endocarditis Caused by Viridans Streptococcus

    Directory of Open Access Journals (Sweden)

    John Swiston

    2001-01-01

    Full Text Available The present report describes a case of native tricuspid valve endocarditis caused by viridans group streptococcus in a 43-year-old man who had recently undergone dental extraction. The patient had no history of intravenous drug use, heart disease or right heart catheterization. Although there have been scattered reports of unusual organisms, to the authors' knowledge, this is the first case of viridans group streptococcal endocarditis involving only the tricuspid valve after dental manipulation.

  13. Isolated native tricuspid valve endocarditis caused by viridans streptococcus

    OpenAIRE

    Swiston, John; Shafran, Stephen D; Kassam, Narmin

    2001-01-01

    The present report describes a case of native tricuspid valve endocarditis caused by viridans group streptococcus in a 43-year-old man who had recently undergone dental extraction. The patient had no history of intravenous drug use, heart disease or right heart catheterization. Although there have been scattered reports of unusual organisms, to the authors' knowledge, this is the first case of viridans group streptococcal endocarditis involving only the tricuspid valve after dental manipulation.

  14. A Study of Streptococcus Viridans in the Maxillofacial Region

    OpenAIRE

    Y. Refoua

    2005-01-01

    Statement of Problem: Streptococcus viridans is one of the most important microorganisms in the establishment of infections leading to dental caries and heart valve damages. Therefore the diagnosis and prevention of these infections is critical in health care.Purpose: The aim of this in-vivo study was to determine the prevalence of viridans streptococci in abscesses occurring in the maxillofacial region.Materials and Methods: The study sample consisted of 39 patients with maxillofacial absces...

  15. Streptococcus bovis Bacteremia in Neonates in a Predominantly Hispanic Population

    OpenAIRE

    YI eJIA; Alicia eAlvarez; Cesar eGarcia; Eduardo Daniel Rosas-Blum; Darius eBoman; Marc eZuckerman

    2015-01-01

    Background Streptococcus bovis bacteremia has been associated with gastrointestinal diseases, especially colon cancer, neoplastic colon polyps, and other malignancies of the GI tract in adults. Sporadic cases of S. bovis disease have also been reported in neonates and young infants. Although uncommon, S. bovis infection can cause fulminant neonatal sepsis and meningitis. Objectives We report a series of pediatric patients with S. bovis bacteremia in a county hospital in a United St...

  16. Ecology of Streptococcus faecium bacteriophage in chicken gut.

    OpenAIRE

    Houghton, S B; Fuller, R

    1980-01-01

    The interaction in the chick gut between Streptococcus faecium and its phage was examined. In conventional chicks, large numbers of S. faecium and phage were found in the cecum and smaller numbers were found in the anterior gut. In gnotobiotic chicks associated with S. faecium SY1 and its phage, there was no marked effect on bacterial numbers, but resistance to the phage rapidly developed. Depression of chick growth caused by S. faecium strain SY1 was partially reversed by its phage.

  17. Streptococcus intermedius: An Unusual Case of Purulent Pericarditis

    Directory of Open Access Journals (Sweden)

    Kara J. Denby

    2017-01-01

    Full Text Available Purulent pericarditis is a rare diagnosis with life-threatening implications due to the rapid accumulation of pericardial material, swiftly progressing to tamponade physiology. The nature of its quickly evolving and severe implications demands a low threshold for diagnostic consideration where appropriate. We present an unusual case of purulent pericarditis secondary to Streptococcus intermedius in a previously healthy male adolescent without traditional risk factors, which raises the question of whether emergent S. intermedius species may have acquired novel molecular mechanisms.

  18. Phenotypic, Genotypic, and Antimicrobial Characteristics of Streptococcus halichoeri Isolates from Humans, Proposal To Rename Streptococcus halichoeri as Streptococcus halichoeri subsp. halichoeri, and Description of Streptococcus halichoeri subsp. hominis subsp. nov., a Bacterium Associated with Human Clinical Infections.

    Science.gov (United States)

    Shewmaker, P L; Whitney, A M; Humrighouse, B W

    2016-03-01

    Phenotypic, genotypic, and antimicrobial characteristics of six phenotypically distinct human clinical isolates that most closely resembled the type strain of Streptococcus halichoeri isolated from a seal are presented. Sequencing of the 16S rRNA, rpoB, sodA, and recN genes; comparative whole-genome analysis; conventional biochemical and Rapid ID 32 Strep identification methods; and antimicrobial susceptibility testing were performed on the human isolates, the type strain of S. halichoeri, and type strains of closely related species. The six human clinical isolates were biochemically indistinguishable from each other and showed 100% 16S rRNA, rpoB, sodA, and recN gene sequence similarity. Comparative 16S rRNA gene sequencing analysis revealed 98.6% similarity to S. halichoeri CCUG 48324(T), 97.9% similarity to S. canis ATCC 43496(T), and 97.8% similarity to S. ictaluri ATCC BAA-1300(T). A 3,530-bp fragment of the rpoB gene was 98.8% similar to the S. halichoeri type strain, 84.6% to the S. canis type strain, and 83.8% to the S. ictaluri type strain. The S. halichoeri type strain and the human clinical isolates were susceptible to the antimicrobials tested based on CLSI guidelines for Streptococcus species viridans group with the exception of tetracycline and erythromycin. The human isolates were phenotypically distinct from the type strain isolated from a seal; comparative whole-genome sequence analysis confirmed that the human isolates were S. halichoeri. On the basis of these results, a novel subspecies, Streptococcus halichoeri subsp. hominis, is proposed for the human isolates and Streptococcus halichoeri subsp. halichoeri is proposed for the gray seal isolates. The type strain of the novel subspecies is SS1844(T) = CCUG 67100(T) = LMG 28801(T). Copyright © 2016, American Society for Microbiology. All Rights Reserved.

  19. Streptococcus pyogenes: an unusual cause of salpingitis. Case report and review of the literature.

    Science.gov (United States)

    Blot, Mathieu; de Curraize, Claire; Salmon-Rousseau, Arnaud; Gehin, Sophie; Bador, Julien; Chavanet, Pascal; Neuwirth, Catherine; Piroth, Lionel; Amoureux, Lucie

    2017-10-01

    Streptococcus pyogenes can colonize genitourinary tract, but it is a rare cause of salpingitis. We report a case of bilateral salpingitis due to Streptococcus pyogenes in a 34-year-old woman using an intra-uterine device and which occurred following a family history of recurrent S. pyogenes infections. We review 12 other cases reported in the literature, and discuss the pathophysiological mechanisms of this potentially life-threatening disease. It is important to take into account consider Streptococcus pyogenes as a cause of acute salpingitis in the context of recent intra-familial Streptococcus pyogenes infections.

  20. Conhecimento da disponibilidade e sobre o uso da ventilação não invasiva em unidades de terapia intensiva de hospitais públicos, privados e de ensino da região metropolitana de São Paulo Availability and use of noninvasive ventilation in the intensive care units of public, private and teaching hospitals in the greater metropolitan area of São Paulo, Brazil

    Directory of Open Access Journals (Sweden)

    Lara Maris Nápolis

    2006-02-01

    Full Text Available OBJETIVO: Avaliar o conhecimento da disponibilidade de equipamentos para ventilação não invasiva e o grau de conhecimento, atualização e familiaridade sobre ventilação não invasiva entre médicos, enfermeiros e fisioterapeutas em unidades de terapia intensiva de hospitais públicos, privados e de ensino da região metropolitana de São Paulo. MÉTODOS: Preenchimento de questionário no local. RESULTADOS: A disponibilidade de equipamentos para ventilação não invasiva na região metropolitana de São Paulo é elevada, sendo maior nos hospitais privados do que nos de ensino e em ambos é maior do que nos públicos. Nos hospitais públicos predomina o uso de aparelhos de ventilação invasiva adaptados para ventilação não invasiva. Nos hospitais privados predomina o gerador de fluxo e nos hospitais de ensino, os ventiladores específicos para ventilação não invasiva. Todos os fisioterapeutas sentiam-se aptos a instalar a ventilação não invasiva, contra 72,6% dos médicos e 33,3% dos enfermeiros. Médicos e fisioterapeutas tiveram grande percentagem de acertos nas indicações e contra-indicações da ventilação não invasiva, que foi menor para os enfermeiros. Em um ano, mais fisioterapeutas leram artigos científicos e participaram de aulas sobre ventilação não invasiva do que médicos, e estes mais que enfermeiros. CONCLUSÃO: A disponibilidade de equipamentos para ventilação não invasiva é elevada nos hospitais da região metropolitana de São Paulo, com diferenças no tipo de equipamento disponível. Médicos e fisioterapeutas têm elevado grau de acerto nas indicações e contra-indicações de seu uso. Fisioterapeutas sentem-se mais aptos a instalar a ventilação não invasiva e estão mais atualizados do que médicos e enfermeiros.OBJECTIVE: To determine the availability of noninvasive positive-pressure ventilation equipment, as well as the level of expertise and familiarity of physicians, nurses and

  1. Cariogenicity features of Streptococcus mutans in presence of rubusoside.

    Science.gov (United States)

    Chu, Jinpu; Zhang, Tieting; He, Kexin

    2016-05-11

    One promising way of reducing caries is by using sucrose substitutes in food. rubusoside is a prototype sweet substance isolated from the leaves of the plant Rubrus suavissimus S. Lee. (Rosaceae), and is rated sweeter than sucrose. The purpose of this study was to investigate the effects of rubusoside on Streptococcus mutans growth, acidogenicity, and adherence to glass in vitro. The effects of rubusoside on the growth and glass surface adhering of Streptococcus mutans were investigated by measuring the optical density of the culture at 540 nm with a spectrophotometer. Rubusoside influence on Streptococcus mutans acidogenicity was determined by measuring the pH of the culture. Sucrose, glucose, maltose, fructose and xylitol were designed to compare with rubusoside. S. mutans growth in the rubusoside-treated group was significantly lower than that in the sucrose, glucose, maltose and fructose groups (p  0.05). Sucrose-treated S. mutans exhibited the highest adherence to glass, and rubusoside-treated S. mutans exhibited the lowest. S. mutans adherence to a glass surface and acidogenicity with sucrose were significantly reduced by rubusoside. Rubusoside may have some potential as a non-cariogenic, non-caloric sweetener.

  2. Characterization of salivary alpha-amylase binding to Streptococcus sanguis

    Energy Technology Data Exchange (ETDEWEB)

    Scannapieco, F.A.; Bergey, E.J.; Reddy, M.S.; Levine, M.J. (State Univ. of New York, Buffalo (USA))

    1989-09-01

    The purpose of this study was to identify the major salivary components which interact with oral bacteria and to determine the mechanism(s) responsible for their binding to the bacterial surface. Strains of Streptococcus sanguis, Streptococcus mitis, Streptococcus mutans, and Actinomyces viscosus were incubated for 2 h in freshly collected human submandibular-sublingual saliva (HSMSL) or parotid saliva (HPS), and bound salivary components were eluted with 2% sodium dodecyl sulfate. By sodium dodecyl sulfate-polyacrylamide gel electrophoresis and Western transfer, alpha-amylase was the prominent salivary component eluted from S. sanguis. Studies with {sup 125}I-labeled HSMSL or {sup 125}I-labeled HPS also demonstrated a component with an electrophoretic mobility identical to that of alpha-amylase which bound to S. sanguis. Purified alpha-amylase from human parotid saliva was radiolabeled and found to bind to strains of S. sanguis genotypes 1 and 3 and S. mitis genotype 2, but not to strains of other species of oral bacteria. Binding of ({sup 125}I)alpha-amylase to streptococci was saturable, calcium independent, and inhibitable by excess unlabeled alpha-amylases from a variety of sources, but not by secretory immunoglobulin A and the proline-rich glycoprotein from HPS. Reduced and alkylated alpha-amylase lost enzymatic and bacterial binding activities. Binding was inhibited by incubation with maltotriose, maltooligosaccharides, limit dextrins, and starch.

  3. Structure of a conjugative element in Streptococcus pneumoniae

    Energy Technology Data Exchange (ETDEWEB)

    Vijayakumar, M.N.; Priebe, S.D.; Guild, W.R.

    1986-06-01

    The authors have cloned and mapped a 69-kilobase (kb) region of the chromosome of Streptococcus pneumoniae DP1322, which carries the conjugative Omega(cat-tet) insertion from S. pneumoniae BM6001. This element proved to be 65.5 kb in size. Location of the junctions was facilitated by cloning a preferred target region from the wild-type strain Rx1 recipient genome. This target site was preferred by both the BM6001 element and the cat-erm-tet element from Streptococcus agalactiae B109. Within the BM6001 element cat and tet were separated by 30 kb, and cat was flanked by two copies of a sequence that was also present in the recipient strain Rx1 DNA. Another sequence at least 2.4 kb in size was found inside the BM6001 element and at two places in the Rx1 genome. Its role is unknown. The ends of the BM6001 element appear to be the same as those of the B109 element, both as seen after transfer to S. pneumoniae and as mapped by others in pDP5 after transposition in Streptococcus faecalis. No homology is seen between the ends of the BM6001 element and no evidence found suggesting that it ever circularizes.

  4. Localised mitogenic activity in horses following infection with Streptococcus equi.

    Science.gov (United States)

    McLean, R; Rash, N L; Robinson, C; Waller, A S; Paillot, R

    2015-06-01

    Streptococcus equi subspecies equi (S. equi) is the causative agent of strangles, a highly contagious upper respiratory disease of equids. Streptococcus equi produces superantigens (sAgs), which are thought to contribute to strangles pathogenicity through non-specific T-cell activation and pro-inflammatory response. Streptococcus equi infection induces abscesses in the lymph nodes of the head and neck. In some individuals, some abscess material remains into the guttural pouch and inspissates over time to form chondroids which can harbour live S. equi. The aim of this study was to determine the sites of sAg production during infection and therefore improve our understanding of their role. Abscess material, chondroids and serum collected from Equidae with signs of strangles were tested in mitogenic assays. Mitogenic sAg activity was only detected in abscess material and chondroids. Our data support the localised in vivo activity of sAg during both acute and carrier phases of S. equi infection. Copyright © 2015 Elsevier Ltd. All rights reserved.

  5. Characterization of salivary alpha-amylase binding to Streptococcus sanguis

    International Nuclear Information System (INIS)

    Scannapieco, F.A.; Bergey, E.J.; Reddy, M.S.; Levine, M.J.

    1989-01-01

    The purpose of this study was to identify the major salivary components which interact with oral bacteria and to determine the mechanism(s) responsible for their binding to the bacterial surface. Strains of Streptococcus sanguis, Streptococcus mitis, Streptococcus mutans, and Actinomyces viscosus were incubated for 2 h in freshly collected human submandibular-sublingual saliva (HSMSL) or parotid saliva (HPS), and bound salivary components were eluted with 2% sodium dodecyl sulfate. By sodium dodecyl sulfate-polyacrylamide gel electrophoresis and Western transfer, alpha-amylase was the prominent salivary component eluted from S. sanguis. Studies with 125 I-labeled HSMSL or 125 I-labeled HPS also demonstrated a component with an electrophoretic mobility identical to that of alpha-amylase which bound to S. sanguis. Purified alpha-amylase from human parotid saliva was radiolabeled and found to bind to strains of S. sanguis genotypes 1 and 3 and S. mitis genotype 2, but not to strains of other species of oral bacteria. Binding of [ 125 I]alpha-amylase to streptococci was saturable, calcium independent, and inhibitable by excess unlabeled alpha-amylases from a variety of sources, but not by secretory immunoglobulin A and the proline-rich glycoprotein from HPS. Reduced and alkylated alpha-amylase lost enzymatic and bacterial binding activities. Binding was inhibited by incubation with maltotriose, maltooligosaccharides, limit dextrins, and starch

  6. Monitorização hemodinâmica invasiva a beira do leito: avaliação e protocolo de cuidados de enfermagem Monitorización hemodinámica invasiva a la cabecera del paciente: evaluación y protocolo del cuidado de enfermeria Invasive hemodynamic monitoring at bedside: nursing evaluation and nursing care protocol

    Directory of Open Access Journals (Sweden)

    Carla Cristina de Souza Ramos

    2008-09-01

    Full Text Available Pesquisa-ação que objetivou estabelecer os parâmetros de avaliação clínica necessários ao paciente submetido à monitorização hemodinâmica pelo Cateter de Artéria Pulmonar (CAP e construir um Protocolo de Cuidados de Enfermagem ao paciente grave e de risco em uso do cateter com os enfermeiros da UTI geral de um hospital público de Santa Catarina. A população se constituiu em uma amostra não probabilística intencional de 5 enfermeiros e utilizou para coleta de dados reuniões de grupo e questionário. O estudo é apresentado mediante estatística descritiva e análises qualitativas das questões subjetivas. Conclui-se que os critérios de avaliação clínica necessários ao paciente submetido à monitorização hemodinâmica se constituem em parâmetros invasivos e não invasivos e que o protocolo fundamenta a tomada de decisão clínica para o cuidado do paciente em uso do Cateter de Artéria Pulmonar.Se trata de una Investigación-acción que tuvo como objetivo establecer los parámetros de evaluación clínica necesarios para el paciente sometido a monitorización hemodinámica por el Catéter de Arteria Pulmonar (CAP y construir un Protocolo de Cuidados de Enfermería para el paciente grave y de riesgo en el uso del catéter, con los enfermeros de una Unidad de Cuidados Intensivos (UCI general de un hospital público de Santa Catarina. La población se constituyó en una muestra no probabilística intencional de 5 enfermeros, utilizándose para la recolección de datos reuniones de grupo y un cuestionario. El estudio se presenta por medio de estadística descriptiva y de análisis cualitativo de las preguntas subjetivas. Se concluye que los criterios de evaluación clínica necesarios para el paciente sometido a monitorización hemodinámica se constituyen en parámetros invasivos y no invasivos y que el protocolo fundamenta la toma de decisión clínica para el cuidado del paciente que usa el CAP.This research-action type

  7. Discrimination between Streptococcus pneumoniae and Streptococcus mitis based on sorting of their MALDI mass spectra.

    Science.gov (United States)

    Ikryannikova, L N; Filimonova, A V; Malakhova, M V; Savinova, T; Filimonova, O; Ilina, E N; Dubovickaya, V A; Sidorenko, S V; Govorun, V M

    2013-11-01

    Accurate species-level identification of alpha-hemolytic (viridans) streptococci (VGS) is very important for understanding their pathogenicity and virulence. However, an extremely high level of similarity between VGS within the mitis group (S. pneumoniae, S. mitis, S. oralis and S. pseudopneumoniae) often results in misidentification of these organisms. Earlier, matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) has been suggested as a tool for the rapid identification of S. pneumoniae. However, by using Biotyper 3.0 (Bruker) or Vitek MS (bioMérieux) databases, Streptococcus mitis/oralis species can be erroneously identified as S. pneumoniae. ClinProTools 2.1 software was used for the discrimination of MALDI-TOF mass spectra of 25 S. pneumoniae isolates, 34 S. mitis and three S. oralis. Phenotypical tests and multilocus gene typing schemes for the S. pneumoniae (http://spneumoniae.mlst.net/) and viridans streptococci (http://viridans.emlsa.net/) were used for the identification of isolates included in the study. The classifying model was generated based on different algorithms (Genetic Algorithm, Supervised Neural Network and QuickClassifier). In all cases, values of sensitivity and specificity were found to be equal or close to 100%, allowing discrimination of mass spectra of different species. Three peaks (6949, 9876 and 9975 m/z) were determined conferring the maximal statistical weight onto each model built. We find this approach to be promising for viridans streptococci discrimination. © 2012 The Authors Clinical Microbiology and Infection © 2012 European Society of Clinical Microbiology and Infectious Diseases.

  8. Streptococcus oralis previously identified as uncommon 'Streptococcus sanguis' in Behçet's disease.

    Science.gov (United States)

    Narikawa, S; Suzuki, Y; Takahashi, M; Furukawa, A; Sakane, T; Mizushima, Y

    1995-08-01

    The relation between the biochemical and serological properties of 'Streptococcus sanguis' was studied to characterize the strains isolated from dental plaque of patients with Behçet's disease and controls. Seven reference and 100 clinical strains preserved by the Behçet's Disease Research Committee of Japan were identified using established criteria and differentiated with antisera against Strep. oralis ATCC 10557, Strep. sanguis ATCC 10556 and 'Strep. sanguis' ST7, compatible with the criteria. Uncommon serovars (serotypes) KTH-1 (= ATCC 49298), KTH-2 (= ATCC 49296), KTH-3 (= ATCC KTH-4 (= ATCC 49297) and B220 (serovar KTH-1) with both IgA1 protease and neuraminidase (sialidase) were identified as Strep. oralis, whereas common serovars ST3 with IgA1 protease alone and ST7 without both enzymes were identified as Strep. sanguis and Strep. gordonii, respectively. Isolates previously ranked as uncommon serovars were identified as Strep. oralis, whereas the rest ranked as common serovars were identified as the same species as those of the grouping strains. A soft-agar technique was available for species identification except for Strep. oralis serovar KTH-1 reacting with the antiserum against Strep. gordonii ST7. The frequency of isolation of Strep. oralis was higher in Behçet's disease (52%) than in controls (38%), but no difference was observed between the properties of the two groups of isolates. Strep. oralis virulence factors may be involved in breach the mucosal barrier in patients with specific reactivity to these antigens and inducing Behçet's disease.

  9. EXPRESSÕES ORAIS POPULARES UTILIZADAS PELO POVO DO LAVRADO EM RORAIMA

    Directory of Open Access Journals (Sweden)

    Sebastião Pereira Nascimento

    2016-08-01

    Full Text Available São apresentadas 564 expressões orais populares utilizadas pelos habitantes do lavrado em Roraima. A maioria dos significados dos termos é originária da herança cultural trazida pelo povo nordestino radicado nos Campos do Rio Branco desde o século XIX. As línguas indígenas também têm influência nestas expressões orais locais, com destaque para as famílias linguísticas Karib e Aruak. Alguns termos têm influências culturais de outras regiões brasileiras e fragmentos de línguas estrangeiras.

  10. Isolamento de Streptococcus pyogenes em indivíduos com faringoamigdalite e teste de susceptibilidade a antimicrobianos Isolation of Streptococcus pyogenes in individuals with pharyngotonsillitis and antimicrobial susceptibility testing

    Directory of Open Access Journals (Sweden)

    Rozana Scalabrin

    2003-12-01

    Full Text Available OBJETIVO: Investigamos a ocorrência de Streptococcus pyogenes em indivíduos com faringoamigdalite que espontaneamente procuraram atendimento em farmácias e unidades de saúde. FORMA DE ESTUDO: Coorte longitudinal. MATERIAL E MÉTODOS: Com auxílio de "swab" e abaixador de língua foram coletadas amostras da orofaringe de 58 indivíduos, as quais foram semeadas por técnica de esgotamento em placas contendo ágar sangue. No momento da coleta, nenhum dos indivíduos estava sob tratamento com antibióticos. A identificação do S. pyogenes foi feita presuntivamente pelo teste de sensibilidade a bacitracina e confirmada pela grupagem sorológica através da extração do antígeno grupo-específico. RESULTADOS: Das 58 amostras de orofaringe analisadas, 32 (55,2% foram provenientes de indivíduos atendidos em farmácias e 26 (44,8% foram obtidas daqueles que procuraram as unidades de saúde. Um total de 15 (25,9% amostras apresentou cultura positiva para S. pyogenes, sendo a maioria dos isolamentos (9/15, 60% proveniente de indivíduos atendidos em farmácia. Streptococcus pyogenes foi isolado em 33,3% (11/33 dos indivíduos com idade entre zero e 15 anos e em 16% (4/25 daqueles com idade acima de 15 anos. As 15 cepas isoladas foram sensíveis a todos os antimicrobianos testados. CONCLUSÃO: Os resultados do presente estudo enfatizam a importância do diagnóstico bacteriológico no tratamento adequado da faringoamigdalite estreptocócica que permite a prevenção das complicações supurativas ou não supurativas e a erradicação do microrganismo da orofaringe.AIM: We investigate the occurrence of Streptococcus pyogenes in individuals with pharyngotonsillitis that spontaneously sought attendance in drugstores or in health units. STUDY DESIGN: Longitudinal cohorte. MATERIAL AND METHOD: Samples from oropharynx of 58 individuals were collected with swab and tongue depressor and inoculated on sheep blood agar plates. At the moment the samples were

  11. Live and heat-killed Lactobacillus spp. interfere with Streptococcus mutans and Streptococcus oralis during biofilm development on titanium surface.

    Science.gov (United States)

    Ciandrini, E; Campana, R; Baffone, W

    2017-06-01

    This research investigates the ability of live and heat-killed (HK) Lactic Acid Bacteria (LAB) to interfere with Streptococcus mutans ATCC 25175 and Streptococcus oralis ATCC 9811 during biofilm formation. Eight Lactobacillus spp. and two oral colonizers, pathogenic Streptococcus mutans and resident Streptococcus oralis, were characterized for their aggregation abilities, cell surface properties and biofilm formation ability on titanium surface. Then, the interference activity of selected live and HK Lactobacillus spp. during S. mutans and S. oralis biofilm development were performed. The cell-free culture supernatants (CFCS) anti-biofilm activity was also determined. LAB possess good abilities of auto-aggregation (from 14.19 to 28.97%) and of co-aggregation with S. oralis. The cell-surfaces characteristics were most pronounced in S. mutans and S. oralis, while the highest affinities to xylene and chloroform were observed in Lactobacillus rhamnosus ATCC 53103 (56.37%) and Lactobacillus paracasei B21060 (43.83%). S. mutans and S. oralis developed a biofilm on titanium surface, while LAB showed a limited or no ability to create biofilm. Live and HK L. rhamnosus ATCC 53103 and L. paracasei B21060 inhibited streptococci biofilm formation by competition and displacement mechanisms with no substantial differences. The CFCSs of both LAB strains, particularly the undiluted one of L. paracasei B21060, decreased S. mutans and S. oralis biofilm formation. This study evidenced the association of LAB aggregation abilities and cell-surface properties with the LAB-mediated inhibition of S. mutans and S. oralis biofilm formation. Lactobacilli showed different mechanisms of action and peculiar strain-specific characteristics, maintained also in the heat-killed LAB. Copyright © 2017 Elsevier Ltd. All rights reserved.

  12. Ações Exercidas pelos Núcleos de Acessibilidade nas Universidades Federais Brasileiras

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    Ana Paula Camilo CIANTELLI

    Full Text Available RESUMO: a inclusão de pessoas com deficiência no ensino superior é uma realidade cada vez mais presente em nosso país, recebendo atenção dos pesquisadores da área. O Programa Incluir - Acessibilidade na Educação Superior, criado em 2005, tem o objetivo de promover o desenvolvimento de políticas institucionais de acessibilidade nas IFES (Instituições Federais de Ensino Superior, buscando o pleno desenvolvimento acadêmico de estudantes com deficiência e/ou mobilidade reduzida. Esta pesquisa objetivou traçar um panorama das ações exercidas pelos núcleos de acessibilidade em favor da participação das pessoas com deficiência nas IFES. Participaram os coordenadores envolvidos com os núcleos das IFES beneficiadas pelo Programa Incluir no ano de 2013, os quais foram convidados a responderem um questionário, via formulário eletrônico, pelo recurso do Google Docs. As respostas foram categorizadas essencialmente nos tópicos temáticos de análise: estrutura física; estrutura humana; ajuda técnica. Foram levantadas as condições de acessibilidade nos âmbitos arquitetônicos, comunicacionais, instrumentais, metodológicos e programáticos. Identificaram-se as ações que estão sendo realizadas pelos núcleos e/ou comitês de acessibilidade e, em igual medida, quais barreiras ainda precisam ser superadas para que estudantes com deficiência possam participar mais ativamente do contexto acadêmico com vistas à conclusão dos seus estudos.

  13. WEBGAP7 – Expectativas Geradas pelo Website versus Desempenho Percebido: O Caso da Pousada Pequena Tiradentes

    Directory of Open Access Journals (Sweden)

    Tarcisio Afonso

    2015-09-01

    Full Text Available O presente estudo teve como objetivo apresentar e aplicar métricas para avaliação de website no segmento hoteleiro. Para isto desenvolveu escalas para avaliação dos atributos do website de uma pousada na cidade histórica de Tiradentes - MG e investigou as lacunas existentes entre as expectativas geradas pelo website e o desempenho percebido pelos clientes, denominadas webgpaps. As escalas desenvolvidas no presente estudo permitiram associar a frequência de uso da internet com a avaliação do website e a relacionar fidelidade com webgaps. A pesquisa realizada foi de natureza descritiva quantitativa, sendo o estudo caracterizado como transversal único, do tipo survey. Um total de cem hóspedes, que haviam visitado o website da pousada, foi pesquisado. O estudo demonstrou a utilidade da escala desenvolvida e apontou lacunas do website da pousada na demora ao carregar a página, que não foi considerada inovadora, bem como não ser uma alternativa ao contato telefônico com a pousada. Quando foram avaliados os webgaps, ficaram evidentes grandes discrepâncias nos serviços de estacionamento. Verificou-se ainda que os clientes mais assíduos da internet se mostraram mais críticos em suas avaliações do website e foi constatada uma relação inversa entre a fidelidade e webgaps em cinco dimensões de serviços consumidos. Os resultados deste trabalho apontam para a necessidade do uso de métricas para a avaliação de lacunas provocadas pela expectativa gerada pelo website e o desempenho percebido pelos clientes e para o estudo dos seus efeitos sobre o comportamento do consumidor.

  14. Streptococcus caviae sp. nov., isolated from guinea pig faecal samples.

    Science.gov (United States)

    Palakawong Na Ayudthaya, Susakul; Hilderink, Loes J; Oost, John van der; Vos, Willem M de; Plugge, Caroline M

    2017-05-01

    A novel cellobiose-degrading and lactate-producing bacterium, strain Cavy grass 6T, was isolated from faecal samples of guinea pigs (Cavia porcellus). Cells of the strain were ovalshaped, non-motile, non-spore-forming, Gram-stain-positive and facultatively anaerobic. The strain gr at 25-40 °C (optimum 37 °C) and pH 4.5-9.5 (optimum 8.0). Phylogenetic analysis based on 16S rRNA gene sequences showed that strain Cavy grass 6T belongs to the genus Streptococcus with its closest relative being Streptococcus devriesei CCUG 47155T with only 96.5 % similarity. Comparing strain Cavy grass 6T and Streptococcus devriesei CCUG 47155T, average nucleotide identity and level of digital DNA-DNA hybridization dDDH were only 86.9 and 33.3 %, respectively. Housekeeping genes groEL and gyrA were different between strain Cavy grass 6T and other streptococci. The G+C content of strain Cavy grass 6T was 42.6±0.3 mol%. The major (>10 %) cellular fatty acids of strain Cavy grass 6T were C16:0, C20 : 1ω9c and summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c). Strain Cavy grass 6T ferment a range of plant mono- and disaccharides as well as polymeric carbohydrates, including cellobiose, dulcitol, d-glucose, maltose, raffinose, sucrose, l-sorbose, trehalose, inulin and dried grass extract, to lactate, formate, acetate and ethanol. Based on phylogenetic and physiological characteristics, Cavy grass 6T can be distinguished from other members of the genus Streptococcus. Therefore, a novel species of the genus Streptococcus, family Streptococcaceae, order Lactobacillales is proposed, Streptococcuscaviae sp. nov. (type strain Cavy grass 6T=TISTR 2371T=DSM 102819T).

  15. Molecular characterization of virulence genes of Streptococcus equi subsp. equi and Streptococcus equi subsp. zooepidemicus in equines.

    Science.gov (United States)

    Javed, R; Taku, A K; Gangil, Rakhi; Sharma, R K

    2016-08-01

    The aim was to determine the occurrence of streptococci in equines in Jammu (R. S. Pura, Katra), characterization of Streptococci equi subsp. equi and Streptococcus equi subsp. zooepidemicus with respect to their virulence traits and to determine antibiotic sensitivity pattern of virulent Streptococcus isolates. A total of 96 samples were collected from both clinically affected animals (exhibiting signs of respiratory tract disease) and apparently healthy animals and were sent to laboratory. The organisms were isolated on Columbia nalidixic acid agar containing 5% sheep blood as well as on sheep blood agar and confirmed by cultural characteristics and biochemical tests. Molecular detection of Streptococcus was done directly from cultures using sodA and seM gene-based polymerase chain reaction (PCR). Antibiogram was performed against five antibiotics such as amoxicillin, penicillin G, streptomycin, rifampicin, and methicillin. During this study, a total 40 streptococcal isolates were obtained out of which 2 isolates were of S. equi subsp. equi, 12 isolates were from S. equi subsp. zooepidemicus. In the PCR-based detection, we revealed amplicons of 235 bp and 679 bp for confirmation of sodA and seM gene, respectively. In antibiogram, two isolates of S. equi subsp. equi were found resistant to penicillin G, and all other isolates were found sensitive to amoxicillin and streptomycin. The majority of streptococcal infections was due to S. equi subsp. Zooepidemicus, and thus was recognized as a potential pathogen of diseases of equines besides S. equi subsp. equi.

  16. Aspergilosis pulmonar invasiva: reporte de un caso

    Directory of Open Access Journals (Sweden)

    Sonia M. Restrepo-Gualteros

    2015-06-01

    Ante la presencia de síntomas respiratorios en pacientes pediátricos con enfermedades hematológicas que cursen con neutropenia febril, es indispensable considerar como agentes etiológicos los hongos, entre los cuales Aspergillus spp. se presenta frecuentemente causando diferentes síndromes clínicos.

  17. Re-evaluation of the taxonomy of the Mitis group of the genus Streptococcus based on whole genome phylogenetic analyses, and proposed reclassification of Streptococcus dentisani as Streptococcus oralis subsp. dentisani comb. nov., Streptococcus tigurinus as Streptococcus oralis subsp. tigurinus comb. nov., and Streptococcus oligofermentans as a later synonym of Streptococcus cristatus.

    Science.gov (United States)

    Jensen, Anders; Scholz, Christian F P; Kilian, Mogens

    2016-11-01

    The Mitis group of the genus Streptococcus currently comprises 20 species with validly published names, including the pathogen S. pneumoniae. They have been the subject of much taxonomic confusion, due to phenotypic overlap and genetic heterogeneity, which has hampered a full appreciation of their clinical significance. The purpose of this study was to critically re-examine the taxonomy of the Mitis group using 195 publicly available genomes, including designated type strains for phylogenetic analyses based on core genomes, multilocus sequences and 16S rRNA gene sequences, combined with estimates of average nucleotide identity (ANI) and in silico and in vitro analyses of specific phenotypic characteristics. Our core genomic phylogenetic analyses revealed distinct clades that, to some extent, and from the clustering of type strains represent known species. However, many of the genomes have been incorrectly identified adding to the current confusion. Furthermore, our data show that 16S rRNA gene sequences and ANI are unsuitable for identifying and circumscribing new species of the Mitis group of the genus Streptococci. Based on the clustering patterns resulting from core genome phylogenetic analysis, we conclude that S. oligofermentans is a later synonym of S. cristatus. The recently described strains of the species Streptococcus dentisani includes one previously referred to as 'S. mitis biovar 2'. Together with S. oralis, S. dentisani and S. tigurinus form subclusters within a coherent phylogenetic clade. We propose that the species S. oralis consists of three subspecies: S. oralis subsp. oralis subsp. nov., S. oralis subsp. tigurinus comb. nov., and S. oralis subsp. dentisani comb. nov.

  18. EFEITOS DE TRÊS MÉTODOS COMPLEMENTARES À ASPIRAÇÃO NAS REPERCUSSÕES HEMODINÂMICAS E MECÂNICA RESPIRATÓRIA EM PACIENTES SOB VENTILAÇÃO MECÂNICA INVASIVA

    Directory of Open Access Journals (Sweden)

    Guilherme Silva

    2013-12-01

    Full Text Available Introdução: A remoção de secreção das vias aéreas por meio da aspiração auxilia na higiene brônquica, troca gasosa e melhora da mecânica ventilatória. Este estudo tem como objetivo analisar os efeitos de três métodos complementares à aspiração nas repercussões hemodinâmicas e mecânica respiratória em pacientes sob ventilação mecânica invasiva. Métodos: Participaram do estudo 45 pacientes com diagnóstico clínico de insuficiência respiratória internados na Unidade de Terapia Intensiva, divididos aleatoriamente em três grupos compostos por 15 indivíduos cada: Grupo Ressuscitador Manual (RM, Grupo Fração inspirada de Oxigênio (FiO2 e grupo Ventilação Mecânica (VM. As variáveis analisadas consistiram nos parâmetros da mecânica respiratória e cardiorrespiratórios: frequência cardíaca, frequência respiratória, pressão arterial sistólica, pressão arterial diastólica, saturação periférica de oxigênio, pressão de pico, pressão de platô, complacência estática, complacência dinâmica. A coleta de dados ocorreu em quatro momentos distintos: antes da realização do procedimento, imediatamente após, 5 minutos e 30 minutos após o procedimento. Resultados: Os resultados apontaram que houve repercussões hemodinâmicas e na mecânica respiratória nos três grupos analisados. Quando comparado os grupos, encontrou-se diferença significativa na variável frequência respiratória no período 30 minutos pós-intervenção do grupo RM versus o grupo VM (p= 0,007, variável P. Pico no período 30 minutos pós-intervenção nos grupos RM versus FiO2 (p= 0,005 e na variável C. Dinâmica no período 30 minutos pós-intervenção nos grupos FiO2 e VM (p=0,005. Conclusão: Conclui-se que houve repercussões hemodinâmicas e de mecânica respiratória nos três métodos complementares à aspiração, porém todos são considerados aplicáveis.

  19. Conduction velocity of the rabbit facial nerve: a noninvasive functional evaluation Velocidade de condução no nervo facial do coelho: uma avaliação funcional não invasiva

    Directory of Open Access Journals (Sweden)

    Belmiro Cavalcanti do Egito Vasconcelos

    2003-06-01

    ós-operatório. O potencial de ação motora bilateral do nervo facial de 17 coelhos foi registrado no pré e no pós-operatório. Os eletrodos superficiais de estimulação foram colocados no pavilhão auricular (tronco do nervo facial e os eletrodos superficiais de gravação foram colocados no músculo quadratus labii inferior. Os nervos faciais foram isolados, transeccionados e separados a 10 mm. O espaço entre os dois cotos nervosos terminais foi reparado com enxertos nervosos autólogos e PTFE-e (politetrafluoretileno ou tubos de colágeno. A média da máxima velocidade de condução do nervo facial foi 41,10 m/s. Nenhuma condução nervosa foi observada no grupo avaliado após 15 dias. A velocidade de condução média nos subgrupos avaliados para o período de 2 e 4 meses foi de aproximadamente 50% do valor normal. A avaliação funcional não invasiva com eletrodos de superfície pode ser útil para a estimulação e registro do potencial de ação muscular e para medir o estado funcional do nervo facial.

  20. Lesao nasal precoce pelo uso da pronga nasal em recem-nascidos prematuros de muito baixo peso: estudo piloto

    Directory of Open Access Journals (Sweden)

    Nathalie Tiemi Ota

    2013-09-01

    Full Text Available OBJETIVO: Analisar, em recém-nascidos de muito baixo peso e com indicação de ventilação não invasiva via pronga nasal, a incidência do aparecimento precoce de lesão nasal. MÉTODOS: Série de casos prospectiva de nascidos com idade gestacional <37 semanas, peso <1.500g e idade pós-natal <29 dias. Os pacientes foram avaliados desde a instalação da pronga nasal até o 3o dia de uso, três vezes ao dia. Foram analisadas as condições clínicas dos pacientes, características do dispositivo e de sua aplicação. A análise inicial foi descritiva, verificando-se a prevalência de lesão nasal bem como os fatores a ela associados. Os dados categóricos foram analisados por qui-quadrado ou exato de Fisher e os dados numéricos, por teste t ou Mann-Whitney. RESULTADOS: Dezoito recém-nascidos foram incluídos, dos quais 12 (idade gestacional de 29,8±3,1 semanas, peso ao nascer de 1.070±194g e Score for Neonatal Acute Phisiology - Perinatal Extension (SNAPPE de 15,4±17,5 evoluíram com lesão nasal (Grupo Lesão e 6 (idade gestacional de 28,0±1,9 semanas, peso de 1.003±317g e SNAPPE de 26,2±7,5 não apresentaram lesão nasal (Grupo Sem Lesão. No Grupo Lesão, houve maior frequência do gênero masculino (75% versus 17%, a lesão apareceu em média após 18 horas e predominantemente no período notur no (75%. CONCLUSÃO: A incidência de lesão nasal em prematuros submetidos à ventilação não invasiva via pronga nasal foi elevada, sendo possível planejar estudo dos fatores associados, com base neste piloto.

  1. Streptococcus agalactiae infection in Nile tilapia (Oreochromis niloticus) and its transmission potential to cohabitated sheepshead minnows (Cyprinodon variegatus)

    Science.gov (United States)

    Streptococcus agalactiae has emerged as an economically important bacterial pathogen affecting global aquaculture. Worldwide aquaculture losses due to S. agalactiae are estimated around U.S. $1 billion, annually. Streptococcus agalactiae also known as a Lancefield Group B Streptococcus (GBS) is a Gr...

  2. Plasmids replicatable in Bacillus subtilis, E. coli and lactic acid streptococcus bacteria

    NARCIS (Netherlands)

    Kok, Jan; Maat, Jan; van der Vossen, Josephus Mauritius; Venema, Gerard

    1997-01-01

    The claimed invention is drawn to a recombinant plasmid which can replicate in Bacillus subtilis, Escherichia coli, and lactic acid Streptococcus bacteria comprising the replication of origin from Streptococcus cremoris plasmid pWV01 as its origin of replication, in addition to coding marker genes

  3. 21 CFR 866.3720 - Streptococcus spp. exo-enzyme reagents.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Streptococcus spp. exo-enzyme reagents. 866.3720 Section 866.3720 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES... spp. exo-enzyme reagents. (a) Identification. Streptococcus spp. exoenzyme reagents are devices used...

  4. Controlled laboratory challenge demonstrates substantial additive genetic variation in resistance to Streptococcus iniae in Nile tilapia

    Science.gov (United States)

    Streptococcus iniae is an etiologic agent of streptococcal disease in tilapia and is one of several Streptococcus spp. that negatively impact worldwide tilapia production. Methods for the prevention and control of S. iniae include vaccines, management strategies, and antibiotics. An alternative and ...

  5. Streptococcus viridans osteomyelitis and endocarditis following dental treatment: a case report.

    Science.gov (United States)

    Choudhury, Maitrayee; Patel, Brijesh R; Patel, Minal; Bashir, Tariq

    2009-09-14

    Vertebral osteomyelitis is an uncommon complication of infective endocarditis with the organism Streptococcus viridans being a rare cause of the condition. This case highlights an unusual presentation of Streptococcus viridans associated with infective endocarditis and pyogenic osteomyelitis in a patient following a dental procedure.

  6. Streptococcus viridans osteomyelitis and endocarditis following dental treatment: a case report

    OpenAIRE

    Choudhury, Maitrayee; Patel, Brijesh R; Patel, Minal; Bashir, Tariq

    2009-01-01

    Vertebral osteomyelitis is an uncommon complication of infective endocarditis with the organism Streptococcus viridans being a rare cause of the condition. This case highlights an unusual presentation of Streptococcus viridans associated with infective endocarditis and pyogenic osteomyelitis in a patient following a dental procedure.

  7. Group B streptococcus and pregnancy : towards an optimal prevention strategy for neonatal Group B Streptococcal Disease

    NARCIS (Netherlands)

    Valkenburg-van den Berg, Arijaantje Willemijntje (Arijaan)

    2012-01-01

    Group B Streptococcus (GBS, Streptococcus agalactiae) has been recognized as an important cause of perinatal morbidity and mortality. The frequency of GBS colonization ranges from 10% to 35% in women of reproductive age. GBS colonization can be transient, intermittent or persistent. Vertical

  8. Streptococcus ovuberis sp. nov., isolated from a subcutaneous abscess in the udder of a sheep.

    Science.gov (United States)

    Zamora, Leydis; Pérez-Sancho, Marta; Fernández-Garayzábal, Jose Francisco; Orden, Jose Antonio; Domínguez-Bernal, Gustavo; de la Fuente, Ricardo; Domínguez, Lucas; Vela, Ana Isabel

    2017-11-01

    One unidentified, Gram-stain-positive, catalase-negative coccus-shaped organism was recovered from a subcutaneous abscess of the udder of a sheep and subjected to a polyphasic taxonomic analysis. Based on cellular morphology and biochemical criteria, the isolate was tentatively assigned to the genus Streptococcus, although the organism did not appear to match any recognized species. 16S rRNA gene sequence comparison studies confirmed its identification as a member of the genus Streptococcus and showed that the nearest phylogenetic relatives of the unknown coccus corresponded to Streptococcus moroccensis and Streptococcus cameli (95.9 % 16S rRNA gene sequence similarity). The sodA sequence analysis showed less than 89.3 % sequence similarity with the currently recognized species of the genus Streptococcus. The novel bacterial isolate was distinguished from close relatives of the genus Streptococcusby using biochemical tests. A mass spectrometry profile was also obtained for the novel isolate using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). Based on both phenotypic and phylogenetic findings, it is proposed that the unknown bacterium be classified as a representative of a novel species of the genus Streptococcus, Streptococcus ovuberis sp. nov. The type strain of Streptococcus ovuberissp. nov. is VB15-00779 T (=CECT 9179 T =CCUG 69612 T ).

  9. Efeitos aditivos da ventilação não invasiva ao treinamento muscular respiratório sobre a tolerância ao exercício na DPOC: ensaio clínico cego, randomizado e controlado

    OpenAIRE

    Koch, Rodrigo

    2016-01-01

    A baixa tolerância ao exercício em pacientes DPOC, fator causador da diminuição da qualidade de vida devido ao descondicionamento físico, parece ser o resultado da interação entre a sobrecarga do sistema respiratório e a fraqueza muscular respiratória, associados à diminuição da força muscular periférica. O objetivo desse estudo foi avaliar os efeitos aditivos da ventilação não invasiva ao treinamento muscular inspiratório sobre a tolerância ao exercício em pacientes DPOC. P...

  10. Phytotherapy inStreptococcusagalactiae:An Overview of the Medicinal Plants Effective againstStreptococcus agalactiae.

    Science.gov (United States)

    Delfani, Somayeh; Bahmani, Mahmoud; Mohammadrezaei-Khorramabadi, Reza; Rafieian-Kopaei, Mahmoud

    2017-06-01

    Streptococcus agalactiae is a spherical and Gram-positive bacterium that causes postpartum sepsis, endometritis, chorioamnionitis and premature delivery in pregnant women. The use of herbs and natural ingredients for the treatment of various disorders has been common. The present review is a report on the medicinal plants with anti-Streptococcus agalactiae effects. In this review, the search was carried out in Web of Science, PubMed, Scopus, Google Scholar and Science direct by keywords such as bacteria, Streptococcus agalactiae and medicinal plants. According to the search results, 10 medicinal plants are used as anti-bacterial against Streptococcus agalactiae. Results of this study suggest that the active ingredients listed in this review paper used for pharmacological studies on Streptococcus agalactiae so it can produce effective natural antibiotic for the future.

  11. Ventilação não-invasiva com pressão positiva (VNIPP e insuficiência respiratória aguda no pós-operatório de escoliose idiopática: relato de caso = Noninvasive ventilation and acute respiratory failure in postoperative of idiopatic scoliosis: case report

    Directory of Open Access Journals (Sweden)

    Bonato, Camile

    2005-01-01

    Full Text Available Objetivo: Relatar o caso de um paciente masculino de 16 anos, no pós-operatório de artrodese de coluna torácica, que foi submetido ao uso da ventilação não invasiva por pressão positiva (VNIPP como auxiliar no tratamento da insuficiência respiratória aguda (IRA. Método: Este é o relato de caso retrospectivo de um paciente do sexo masculino de 16 anos, que internou em abril de 2005 na Unidade de Terapia Intensiva Pediátrica (UTIP do Hospital São Lucas (HSL da Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS. As variáveis foram coletadas do prontuário do paciente, a evolução do caso foi analisada com base no acompanhamento dos exames radiológicos de tórax e dos sinais clínicos (gasometria arterial e sinais vitais. Resultados: Com este estudo de caso observou-se que a VNIPP melhorou a hipoxemia, reduziu o esfor- ço ventilatório, auxiliou na melhora radiológica e gasométrica de um paciente de 16 anos, do sexo masculino, no pós-operatório de artrodese de coluna. Conclusão: Observou-se que a utilização da VNIPP para o tratamento da IRA no pós-operató- rio de artrodese de coluna auxiliou para o manejo pré e pós desmame da ventilação mecânica invasiva (VMI

  12. Ventilação não-invasiva com pressão positiva (VNIPP e insuficiência respiratória aguda no pós-operatório de escoliose idiopática: relato de caso

    Directory of Open Access Journals (Sweden)

    Bonato, Camile et al.

    2005-01-01

    Full Text Available Objetivo: Relatar o caso de um paciente masculino de 16 anos, no pós-operatório de artrodese de coluna torácica, que foi submetido ao uso da ventilação não invasiva por pressão positiva (VNIPP como auxiliar no tratamento da insuficiência respiratória aguda (IRA. Método: Este é o relato de caso retrospectivo de um paciente do sexo masculino de 16 anos, que internou em abril de 2005 na Unidade de Terapia Intensiva Pediátrica (UTIP do Hospital São Lucas (HSL da Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS. As variáveis foram coletadas do prontuário do paciente, a evolução do caso foi analisada com base no acompanhamento dos exames radiológicos de tórax e dos sinais clínicos (gasometria arterial e sinais vitais. Resultados: Com este estudo de caso observou-se que a VNIPP melhorou a hipoxemia, reduziu o esforço ventilatório, auxiliou na melhora radiológica e gasométrica de um paciente de 16 anos, do sexo masculino, no pós-operatório de artrodese de coluna. Conclusão: Observou-se que a utilização da VNIPP para o tratamento da IRA no pós-operatório de artrodese de coluna auxiliou para o manejo pré e pós desmame da ventilação mecânica invasiva (VMI.

  13. Bovine S protein (vitronectin increases phagocytosis of Streptococcus dysgalactiae Aumento na fagocitose de Streptococcus dysgalactiae pela ação da proteína S bovina (vitronectina

    Directory of Open Access Journals (Sweden)

    Laerte Francisco Filippsen

    1999-01-01

    Full Text Available The effects of bovine S protein (vitronectin on phagocytosis of Streptococcus dysgalactiae strains isolated from cattle with mastitis were investigated. Phagocytized streptococci were determined by a fluorometric microassay using glass adherent polymorphonuclear neutrophils (PMN. Preincubation of S. dysgalactiae with bovine S protein significantly increased their phagocytosis by PMN. Bovine S protein had no effect on phagocytic killing of non-S protein binding S. pyogenes cultures. Enzymatic digestion of the bovine S protein binding sites on S. dysgalactiae with pronase resulted in a significative reduction of the effects of S protein on phagocytosis. It could thus be concluded that in addition to its role as a promoter of cellular adhesion and complement inhibitor, bovine S protein may also influence the phagocytosis of S. dysgalactiae during inflammatory processes.Foram investigados os efeitos da proteína S bovina (vitronectina na fagocitose de amostras de Streptococcus dysgalactiae isoladas de bovinos com mastite. A determinação do número de estreptococos fagocitados foi realizada pelo método fluorométrico utilizando neutrófilos polimorfonucleares (NPM aderidos em lâminas de vidro. A pré-incubação do S. dysgalactiae com a proteína S bovina aumentou significativamente a sua fagocitose por NPM. A proteína S bovina não causou efeito na fagocitose de culturas de S. pyogenes, já que não apresentam sítios de ligação para esta proteína. A digestão enzimática com pronase dos sítios de ligação S. dysgalactiae para a proteína S bovina resultou numa significativa redução do efeito da proteína S na fagocitose. Pode-se concluir que além do papel como promotor da adesão celular e inibidor do complemento, a proteína S bovina pode também influir na fagocitose do S. dysgalactiae durante os processos inflamatórios.

  14. Detecção de anticorpo anticoração em camundongos Balb/c imunizados com Streptococcus mutans Detection of heart-reactive antibody in Balb/c mice immunized with Streptococcus mutans

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    Mariella Vieira Pereira LEÃO

    2000-12-01

    Full Text Available Anticorpos para antígenos cardíacos foram analisados por ELISA em 14 soros de camundongos Balb/c hiperimunizados com Streptococcus mutans, inativado pelo formaldeído. Os níveis de anticorpos da classe IgG anticoração e antimiosina elevaram-se significativamente nos animais imunizados quando comparados com os controles, especialmente no grupo A, imunizado e reestimulado com antígenos solúveis de S. mutans. Neste grupo, os resultados do "Western Blot" mostraram reatividade com miosina cardíaca e uma banda de 35 kDa. A análise histológica dos corações dos animais do grupo B, imunizado e reestimulado com antígenos de superfície do microrganismo, demonstrou a presença de degeneração celular, tipo hidrópica e hialina e focos inflamatórios constituídos de linfócitos e macrófagos no miocárdio e pericárdio. Os resultados deste trabalho reforçam a hipótese da existência de mimetismo antigênico entre tecido cardíaco e S. mutans e chamam a atenção para o risco de desenvolvimento de anticorpos reativos com antígenos próprios induzidos por vacina anticárie com componentes estreptocócicos.Heart-reactive antibodies were examined by ELISA, in sera from 14 Balb/c mice immunized with Streptococcus mutans inactivated by treatment with formaldehyde. Anti-heart and anti-myosin IgG levels increased significantly in the sera from immunized mice, when compared with those of control sera, especially in the first group, inoculated with a new antigen preparation. This group displayed a notable reactivity with cardiac myosin and cardiac tissue proteins in Western-blotting, mainly with a 35 kDa peptide. The histological analysis of immunized animals’ cardiac tissue demonstrated the existence of cell injury and eosinophilia attributable to cellular hyaline change. The pericardium and the myocardium showed inflammatory infiltrate formed by lymphocytes and macrophages. These findings suggest the existence of molecular mimicry between S

  15. Human Streptococcus agalactiae strains in aquatic mammals and fish

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    Delannoy Christian MJ

    2013-02-01

    Full Text Available Abstract Background In humans, Streptococcus agalactiae or group B streptococcus (GBS is a frequent coloniser of the rectovaginal tract, a major cause of neonatal infectious disease and an emerging cause of disease in non-pregnant adults. In addition, Streptococcus agalactiae causes invasive disease in fish, compromising food security and posing a zoonotic hazard. We studied the molecular epidemiology of S. agalactiae in fish and other aquatic species to assess potential for pathogen transmission between aquatic species and humans. Methods Isolates from fish (n = 26, seals (n = 6, a dolphin and a frog were characterized by pulsed-field gel electrophoresis, multilocus sequence typing and standardized 3-set genotyping, i.e. molecular serotyping and profiling of surface protein genes and mobile genetic elements. Results Four subpopulations of S. agalactiae were identified among aquatic isolates. Sequence type (ST 283 serotype III-4 and its novel single locus variant ST491 were detected in fish from Southeast Asia and shared a 3-set genotype identical to that of an emerging ST283 clone associated with invasive disease of adult humans in Asia. The human pathogenic strain ST7 serotype Ia was also detected in fish from Asia. ST23 serotype Ia, a subpopulation that is normally associated with human carriage, was found in all grey seals, suggesting that human effluent may contribute to microbial pollution of surface water and exposure of sea mammals to human pathogens. The final subpopulation consisted of non-haemolytic ST260 and ST261 serotype Ib isolates, which belong to a fish-associated clonal complex that has never been reported from humans. Conclusions The apparent association of the four subpopulations of S. agalactiae with specific groups of host species suggests that some strains of aquatic S. agalactiae may present a zoonotic or anthroponotic hazard. Furthermore, it provides a rational framework for exploration of pathogenesis and host

  16. Simultaneous detection of Neisseria meningitidis, Haemophilus influenzae and Streptococcus sp. by polymerase chain reaction for the diagnosis of bacterial meningits Detecção simultânea da Neisseria meningitidis, Haemophilus influenzae e Streptococcus sp. pela reação em cadeia da polimerase no diagnóstico das meningites bacterianas

    Directory of Open Access Journals (Sweden)

    Luciane Failace

    2005-12-01

    Full Text Available The simultaneous detection of Neisseria meningitidis, Haemophilus influenzae, and Streptococcus sp. was assessed by polymerase chain reaction (PCR for the diagnosis of bacterial meningitis, as well as the applicability of PCR as a routine test. A cohort study was carried out with 182 children (2 months to 12 years of age with suspicion of bacterial meningitis. Routine tests identified the etiologic agent in 65/84 children whose clinical status and laboratory findings suggested the presence of bacterial meningitis. Bacterial meningitis was ruled out in 98 children. In 19 children, the etiologic diagnosis was not possible using standard methods; in 14 of these patients, the etiologic agent was identified by PCR (N. meningitidis=12; H. influenzae=1; Streptococcus sp.=1. The sensitivity of PCR was 88.1%; specificity, 99.0%; positive predictive value, 98.7%; and negative predictive, 90.1%. PCR is a useful complementary diagnostic technique, especially when Gram stain, culture, or antigenic detection are negative or inconclusive.Avaliamos o desempenho da reação em cadeia da polimerase (PCR para detecção simultânea da Neisseria meningitidis, Haemophilus influenzae e Streptococcus sp. no diagnóstico das meningites bacterianas e sua aplicabilidade na rotina diagnóstica. Foi realizado um estudo de coorte com 182 crianças apresentando suspeita de meningite bacteriana. Em 84, havia alterações clínicas e laboratoriais sugestivas de meningite bacteriana. Destas, 65 tiveram o agente etiológico identificado pelos métodos laboratoriais de rotina e 19 ficaram sem diagnóstico etiológico. Em 98 pacientes foi excluído o diagnóstico de meningite bacteriana. Analisando o desempenho da PCR encontramos sensibilidade de 88,1%, especificidade de 99,0% e valores preditivos positivo e negativo de 98,7% e 90,1% respectivamente. Nos 19 pacientes com meningite bacteriana mas sem diagnóstico etiológico a PCR detectou microrganismos em 14, sendo 12 N

  17. Association of Streptococcus pluranimalium with valvular endocarditis and septicaemia in adult broiler parents.

    Science.gov (United States)

    Hedegaard, L; Christensen, H; Chadfield, M S; Christensen, J P; Bisgaard, M

    2009-04-01

    The genus Streptococcus consists of more than 60 species, but only Streptococcus equi subspecies zooepidemicus, Streptococcus gallolyticus ssp. gallolyticus, Streptococcus gallinaceus, Streptococcus dysgalactiae, Streptococcus mutans and Streptococcus suis have been isolated from poultry. During investigations of the aetiology of increased mortality in broiler parent stock at the end of production, pure cultures of streptococcal-like organisms that could not be classified among these six species were obtained from 24 cases of septicaemia or valvular endocarditis and septicaemia. Phenotypic characterization using the API20 STREP kit identified the isolates as Aerococcus viridans (10), Aerococcus urinae (2), Leuconostoc species (4), Streptococcus salivarius (2), Streptococcus bovis II 3 (1), Enterococcus avium (3), Enterococcus faecium (1) or Gemella morbillorum (1). However, this identification was misleading as subsequent genetic investigations using pulse field gel electrophoresis and sequencing of 16S rRNA genes showed that 19 isolates were classified as Streptococcus pluranimalium, while the remaining isolates were E. avium (3), E. faecium (1) or Lactobacillus species (1). Misidentification by API20 STREP was related to the database provided by the manufacturer, as the phenotypic characteristics could identify these organisms as S. pluranimalium. The isolates of S. pluranimalium belonged to at least three different clones as determined by pulsed field gel electrophoresis of SmaI-digested genomic DNA. The capacity that these isolates had to colonize the valvular endothelium was suggested by the occurrence of valvular endocarditis in 12 of 19 cases. Demonstration of the same clone in all four houses on a farm suggested the pathogenic potential of this organism.

  18. Development of Streptococcus pneumoniae Vaccines Using Live Vectors

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    Shifeng Wang

    2014-01-01

    Full Text Available Streptococcus pneumoniae still causes severe morbidity and mortality worldwide, especially in young children and the elderly. Much effort has been dedicated to developing protein-based universal vaccines to conquer the current shortcomings of capsular vaccines and capsular conjugate vaccines, such as serotype replacement, limited coverage and high costs. A recombinant live vector vaccine delivering protective antigens is a promising way to achieve this goal. In this review, we discuss the researches using live recombinant vaccines, mainly live attenuated Salmonella and lactic acid bacteria, to deliver pneumococcal antigens. We also discuss both the limitations and the future of these vaccines.

  19. Streptococcus salivarius meningitis after dental care: case report

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    Maira Zoppelletto

    2012-12-01

    Full Text Available Introduction. Streptococcus salivarius is a common commensal of the oral mucosa, associated with infections in different sites. Meningitis due to this species are described in a few occasions . In this study refer to a case recently diagnosed in our hospital for treatment of a subsequent dental caries. Case report. A man of 35 years, presents to the emergency room with fever, headache, confusion, marked nuchal rigor.Anamnesis is the treatment of dental caries on the previous day.The blood count showed 24.7x109 / L with WBC 22.9x109 / L (92.9% neutrophils. The lumbar puncture CSF noted cloudy with 15.0 x 109 / L WBC, glicorrachia 5 g / L, protidorrachia 6.5 g / L. Microscopic examination showed numerous granulocytes and prevalence of Gram-positive cocci.The pneumococcal antigen was negative.The blood cultures before starting antibiotic therapy, were negative. CSF was isolated from the culture of a Streptococcus salivarius. To antibiotic therapy started in the ED, after lumbar puncture is associated with the Ampicillin Ceftriaxone and continued for 15 days to improve the patient’s general condition, then resigned in the 17 th day. Materials and methods. From CSF inoculated in blood agar plates and chocolate agar alpha hemolytic colonies were isolated, catalysis negative, optochin resistant. The biochemical identification performed with Phoenix (BD and confirmed by PCR Pan bacterial (16S rDNA bacterial strain identified as Streptococcus salivarius.The antibiogram performed with Phoenix (BD according to the CLSI guidelines indicated sensitivity to penicillin, vancomycin, cefotaxime, cefepime, and chloramphenicol. Conclusions. Meningitis by Streptococcus salivarius was found in a few cases, mainly related to the transmission of health personnel from the oral cavity during lumbar punctures performed without the use of surgical masks. The following bacterial meningitis in dental treatment having a low incidence and often fatal course be suspected by

  20. The heterogeneity of Streptococcus viridans: therapeutic considerations in infective endocarditis

    Science.gov (United States)

    Fisher, J.; Levene, D.L.

    1975-01-01

    A 24-year-old woman with Marfan's syndrome and mitral regurgitation had clinical features suggestive of infective endocarditis. The causative organism was Streptococcus viridans. Initial therapy with penicillin G, in a dose that should have been bactericidal and hence curative according to the results of the initial quantitative antimicrobial studies, became inadequate. The strain of S. viridans displayed considerable variation in both growth properties and antimicrobial sensitivity during the course of therapy. In addition, a different strain of S. viridans was cultured 1 month after treatment had begun. It is therefore important to repeat cultures and antimicrobial sensitivity testing during treatment of infective endocarditis. PMID:1125890

  1. Streptococcus suis Meningitis: First Case Reported in Quebec

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    Sophie Michaud

    1996-01-01

    Full Text Available Very few Streptococcus suis infections in humans have been reported in Canada, although the condition is frequent in pigs. Meningitis, often accompanied by severe hearing loss, is the most common clinical manifestation. The disease is an occupational illness affecting persons in contact with pigs and may be underdiagnosed because of misidentification of the responsible bacterium. Since Quebec is the leading province for swine production in Canada, physicians and microbiologists should be aware of this infection, especially when a streptococcal meningitis is diagnosed in swine workers. The first case of S suis type 2 meningitis reported in Quebec is described.

  2. Chromosome and cell wall segregation in Streptococcus faecium ATCC 9790

    Energy Technology Data Exchange (ETDEWEB)

    Higgins, M.L.; Glaser, D.; Dicker, D.T.; Zito, E.T.

    1989-01-01

    Segregation was studied by measuring the positions of autoradiographic grain clusters in chains formed from single cells containing on average less than one radiolabeled chromosome strand. The degree to which chromosomal and cell wall material cosegregated was quantified by using the methods of S. Cooper and M. Weinberger, dividing the number of chains labeled at the middle. This analysis indicated that in contrast to chromosomal segregation in Escherichia coli and, in some studies, to that in gram-positive rods, chromosomal segregation in Streptococcus faecium was slightly nonrandom and did not vary with growth rate. Results were not significantly affected by strand exchange. In contrast, labeled cell wall segregated predominantly nonrandomly.

  3. Significant Association of Streptococcus bovis with Malignant Gastrointestinal Diseases

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    Salah Shanan

    2011-01-01

    Full Text Available Streptococcus bovis is a Gram-positive bacterium causing serious human infections, including endocarditis and bacteremia, and is usually associated with underlying disease. The aims of the current study were to compare prevalence of the bacterium associated with malignant and nonmalignant gastrointestinal diseases and to determine the susceptibility of the isolated strains to different antimicrobial agents. The result showed that the prevalence of S. bovis in stool specimens from patients with malignant or with nonmalignant gastrointestinal diseases was statistically significant. This result may support the idea that there is correlation between S. bovis and the malignant gastrointestinal diseases.

  4. Physico-chemical and structural properties of the surfaces of Peptostreptococcus micros and Streptococcus mitis as compared to those of mutans streptococci, Streptococcus sanguis and Streptococcus salivarius.

    Science.gov (United States)

    Cowan, M M; van der Mei, H C; Rouxhet, P G; Busscher, H J

    1992-12-01

    The surface properties of nine Streptococcus mitis and four Peptostreptococcus micros strains from the oral cavity were examined and compared with a large group of oral streptococci. Zeta potential and contact angle measurements were employed to determine physico-chemical cell surface properties. In addition, elemental surface concentration ratios were obtained via X-ray photoelectron spectroscopy, and surface structures were examined with transmission electron microscopy. The S. mitis and P. micros strains were found to have higher isoelectric points, higher hydrophobicities and higher N/C surface concentration ratios than some other oral streptococci. The combined data suggest that both species possess large amounts of surface protein. All the S. mitis strains displayed abundant surface fibrils in negative staining, but the P. micros strains were devoid of surface appendages indicating that surface protein is present in different forms in the two species. The surfaces of S. mitis and P. micros type strains differed significantly from the other strains examined.

  5. The concept of ’Musa-pelo and the medicinal use of shrubby legumes (Fabaceae in Lesotho

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    A. Moteetee

    2007-08-01

    Full Text Available In the Kingdom of Lesotho, 20 plant species are commonly known as  'Musa-pelo. The term literally means ‘the one who brings back or tums around the heart’.  'Musa-pelo is traditionally used as a sedative and is given as a first aid treatment to bereaved people who are under severe psychological duress or stress. Of the 20 species known as  'Musa-pelo, 17 belong to nine genera of the Fabaceae  (Argyrolobium, Crotalaria, Indigofera, Lessertia, Lotononis, Melolobium, Sutherlandia, Tephrosia and  Trifolium. The three remaining species namely Cleome monophylla, Heliophila carnosa and  Cysticapnos pruinosa, belong to the families Capparaceae, Brassicaceae and Fumariaceae, respectively. In this paper, the concept of 'Musa-pelo in traditional medicine is explored.

  6. Desenvolvimento de um modelo experimental de esteatohepatite induzida pelo antineoplÃsico irinotecano

    OpenAIRE

    Marcelo Leite Vieira Costa

    2012-01-01

    IntroduÃÃo: A esteatohepatite nÃo alcoÃlica (NASH) à um evento adverso do quimioterÃpico irinotecano extremamente relevante, pois associa-se a uma maior mortalidade apÃs ressecÃÃes hepÃticas. Atà o momento nÃo hà na literatura um modelo experimental bem estabelecido de NASH induzido por irinotecano. Objetivo: Estabelecer um modelo experimental de NASH induzida pelo irinotecano em camundongos que simule os aspectos histopatolÃgicos encontrados na clÃnica. Estudar os mecanismos e mediadores env...

  7. Narrativa e Internet: possibilidades e limites do atendimento psicoterápico mediado pelo computador

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    Leonardo Pinto de Almeida

    Full Text Available Este artigo tem como objetivo refletir sobre a possibilidade do atendimento psicológico mediado pelo computador. Buscamos relacionar a psicoterapia com as descrições das tecnologias da inteligência - a oralidade, a escrita e a informática. Concluímos que a clínica, enquanto entidade instituída, envolve a necessidade da presença física do terapeuta, o que não inviabiliza o esforço de pensarmos outras formas de encontros.

  8. AS FUNÇÕES DESEMPENHADAS PELOS WEBSITES PARLAMENTARES BRASILEIROS E O PAPEL DOS PROGRAMAS EDUCATIVOS

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    Sergio Soares Braga

    Full Text Available RESUMO: O objetivo deste artigo foi analisar as funções parlamentares desempenhadas pelos websites parlamentares (WPs brasileiros em escala subnacional, tendo como foco a função educativa. Nossa análise baseia-se no modelo metodológico proposto por Cristina Leston-Bandeira, em seus diversos trabalhos sobre os WPs europeus. Os resultados apontam para uma ampla desigualdade na distribuição das funções educativas entre os portais legislativos brasileiros, ao mesmo tempo em que ocorrem experiências de vanguarda que contribuem para um maior enraizamento social dos órgãos legislativos brasileiros.

  9. Multiparentalidade: benefícios e efeitos jurídicos do seu reconhecimento pelo Direito

    OpenAIRE

    Carla Eduarda de Almeida Vieira

    2015-01-01

    O presente trabalho busca analisar os benefícios e os efeitos jurídicos decorrentes do reconhecimento da multiparentalidade pelo Poder Judiciário brasileiro. Para tanto, utiliza-se de pesquisas bibliográficas e jurisprudenciais. Através de expoentes doutrinários do Direito de Família, apresenta-se um breve recorte histórico da estrutura familiar no Brasil, desde a família matrimonial, hierarquizada e patrimonial, até a concepção contemporânea de família eudemonista, fortemente influenciada pe...

  10. Apropriações do Twitter pelo jornalismo de moda no Brasil

    OpenAIRE

    Flores, Ana Marta Moreira

    2012-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Jornalismo, Florianópolis, 2012 O presente trabalho investiga as apropriações das potencialidades do microblog Twitter pelo jornalismo especializado em moda no Brasil. Partimos de uma aproximação conceitual ao considerar jornalismo e moda em suas naturezas no cruzamento das ideias introduzidas por autores como Otto Groth, Luiz Beltrão, Gilles Lipovetsky e Lars Sv...

  11. A fundação de São Paulo pelos jesuítas

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    Hélio Abranches Viotti

    1954-03-01

    Full Text Available (Primeiro Parágrafo do Artigo Enviado pelo Padre Manuel da Nóbrega, chegou a São Vicente, em princípios de 1550. De Ilhéus trouxera consigo um grupo de índios carijós, catequisados anteriormente por franciscanos, salteados por colonos do Brasil, preadores de escravos, e postos então em liberdade, por ordem de Tomé de Souza e a pedido de Nóbrega, índios que deveriam restituir a suas terras, apenas se reunissem todos os libertados, para lá os evangelizar.

  12. A diversidade de lagartos na Caatinga é mediada pelos térmitas?

    OpenAIRE

    Souza, Heitor Bruno de Araujo

    2012-01-01

    Ao tentar explicar a extraordinária taxa de coexistência de lagartos em desertos Australianos, Morton & James (1988) formularam uma hipótese em que a diversidade de térmitas promoveria uma diversificação dos lagartos. O presente estudo visa verificar se essa hipótese é válida para as taxocenoses de lagartos da Caatinga. Objetiva-se também verificar se os mecanismos de defesa dos térmitas influenciam a taxa com que esses são consumidos pelos lagartos e se esse padrão difere entre diferentes li...

  13. Dor sofrida pelo recém-nascido durante a punção arterial

    OpenAIRE

    Silva, Teresa Mônica da; Chaves, Edna Maria Camelo; Cardoso, Maria Vera Lúcia Moreira Leitão

    2009-01-01

    Objetivou-se avaliar a intensidade da dor sofrida pelo recém-nascido prematuro na Unidade de Terapia Intensiva Neonatal, durante a coleta de sangue arterial, por intermédio da Neonatal Infant Pain Scale (NIPS), utilizando medidas de sucção não nutritiva. Estudo de intervenção, quantitativo, realizado com 24 recém-nascidos em Fortaleza CE, em 2004. O grupo-caso recebeu uma chupeta de gaze embebida em água destilada, e o grupo-controle, uma chupeta com glicose a 25%, dois minutos antes da colet...

  14. O controle dos atos administrativos pelo Poder Judiciário

    OpenAIRE

    Ana Cristina Monteiro de Andrade Silva

    2010-01-01

    Pretende-se, por meio deste trabalho, fazer um estudo sobre o controle jurisdicional dos atos administrativos, concluindo que tal controle abrange também os atos discricionários. Entretanto, o juiz não tem poderes ilimitados, não podendo substituir o juízo administrativo pelo seu próprio, mas em nome dos princípios da economicidade e da eficiência os precedentes devem ser acatados pela Administração, salvo exceções justificadas claramente. Palavras-chave: Controle judicial. Atos administrativ...

  15. Narrativa e Internet: possibilidades e limites do atendimento psicoterápico mediado pelo computador

    OpenAIRE

    Almeida, Leonardo Pinto de; Rodrigues, Joelson Tavares

    2003-01-01

    Este artigo tem como objetivo refletir sobre a possibilidade do atendimento psicológico mediado pelo computador. Buscamos relacionar a psicoterapia com as descrições das tecnologias da inteligência - a oralidade, a escrita e a informática. Concluímos que a clínica, enquanto entidade instituída, envolve a necessidade da presença física do terapeuta, o que não inviabiliza o esforço de pensarmos outras formas de encontros. This paper aims to reflect about the possibility of psychological atte...

  16. A Novel Pheromone Quorum-Sensing System Controls the Development of Natural Competence in Streptococcus thermophilus and Streptococcus salivarius▿ †

    Science.gov (United States)

    Fontaine, Laetitia; Boutry, Céline; de Frahan, Marie Henry; Delplace, Brigitte; Fremaux, Christophe; Horvath, Philippe; Boyaval, Patrick; Hols, Pascal

    2010-01-01

    In streptococcal species, the key step of competence development is the transcriptional induction of comX, which encodes the alternative sigma factor σX, which positively regulates genes necessary for DNA transformation. In Streptococcus species belonging to the mitis and mutans groups, induction of comX relies on the activation of a three-component system consisting of a secreted pheromone, a histidine kinase, and a response regulator. In Streptococcus thermophilus, a species belonging to the salivarius group, the oligopeptide transporter Ami is essential for comX expression under competence-inducing conditions. This suggests a different regulation pathway of competence based on the production and reimportation of a signal peptide. The objective of our work was to identify the main actors involved in the early steps of comX induction in S. thermophilus LMD-9. Using a transcriptomic approach, four highly induced early competence operons were identified. Among them, we found a Rgg-like regulator (Ster_0316) associated with a nonannotated gene encoding a 24-amino-acid hydrophobic peptide (Shp0316). Through genetic deletions, we showed that these two genes are essential for comX induction. Moreover, addition to the medium of synthetic peptides derived from the C-terminal part of Shp0316 restored comX induction and transformation of a Shp0316-deficient strain. These peptides also induced competence in S. thermophilus and Streptococcus salivarius strains that are poorly transformable or not transformable. Altogether, our results show that Ster_0316 and Shp0316, renamed ComRS, are the two members of a novel quorum-sensing system responsible for comX induction in species from the salivarius group, which differs from the classical phosphorelay three-component system identified previously in streptococci. PMID:20023010

  17. A novel pheromone quorum-sensing system controls the development of natural competence in Streptococcus thermophilus and Streptococcus salivarius.

    Science.gov (United States)

    Fontaine, Laetitia; Boutry, Céline; de Frahan, Marie Henry; Delplace, Brigitte; Fremaux, Christophe; Horvath, Philippe; Boyaval, Patrick; Hols, Pascal

    2010-03-01

    In streptococcal species, the key step of competence development is the transcriptional induction of comX, which encodes the alternative sigma factor sigma(X), which positively regulates genes necessary for DNA transformation. In Streptococcus species belonging to the mitis and mutans groups, induction of comX relies on the activation of a three-component system consisting of a secreted pheromone, a histidine kinase, and a response regulator. In Streptococcus thermophilus, a species belonging to the salivarius group, the oligopeptide transporter Ami is essential for comX expression under competence-inducing conditions. This suggests a different regulation pathway of competence based on the production and reimportation of a signal peptide. The objective of our work was to identify the main actors involved in the early steps of comX induction in S. thermophilus LMD-9. Using a transcriptomic approach, four highly induced early competence operons were identified. Among them, we found a Rgg-like regulator (Ster_0316) associated with a nonannotated gene encoding a 24-amino-acid hydrophobic peptide (Shp0316). Through genetic deletions, we showed that these two genes are essential for comX induction. Moreover, addition to the medium of synthetic peptides derived from the C-terminal part of Shp0316 restored comX induction and transformation of a Shp0316-deficient strain. These peptides also induced competence in S. thermophilus and Streptococcus salivarius strains that are poorly transformable or not transformable. Altogether, our results show that Ster_0316 and Shp0316, renamed ComRS, are the two members of a novel quorum-sensing system responsible for comX induction in species from the salivarius group, which differs from the classical phosphorelay three-component system identified previously in streptococci.

  18. Molecular characterization of virulence genes of Streptococcus equi subsp. equi and Streptococcus equi subsp. zooepidemicus in equines

    Science.gov (United States)

    Javed, R.; Taku, A. K.; Gangil, Rakhi; Sharma, R. K.

    2016-01-01

    Aim: The aim was to determine the occurrence of streptococci in equines in Jammu (R. S. Pura, Katra), characterization of Streptococci equi subsp. equi and Streptococcus equi subsp. zooepidemicus with respect to their virulence traits and to determine antibiotic sensitivity pattern of virulent Streptococcus isolates. Materials and Methods: A total of 96 samples were collected from both clinically affected animals (exhibiting signs of respiratory tract disease) and apparently healthy animals and were sent to laboratory. The organisms were isolated on Columbia nalidixic acid agar containing 5% sheep blood as well as on sheep blood agar and confirmed by cultural characteristics and biochemical tests. Molecular detection of Streptococcus was done directly from cultures using sodA and seM gene-based polymerase chain reaction (PCR). Antibiogram was performed against five antibiotics such as amoxicillin, penicillin G, streptomycin, rifampicin, and methicillin. Results: During this study, a total 40 streptococcal isolates were obtained out of which 2 isolates were of S. equi subsp. equi, 12 isolates were from S. equi subsp. zooepidemicus. In the PCR-based detection, we revealed amplicons of 235 bp and 679 bp for confirmation of sodA and seM gene, respectively. In antibiogram, two isolates of S. equi subsp. equi were found resistant to penicillin G, and all other isolates were found sensitive to amoxicillin and streptomycin. Conclusion: The majority of streptococcal infections was due to S. equi subsp. Zooepidemicus, and thus was recognized as a potential pathogen of diseases of equines besides S. equi subsp. equi. PMID:27651677

  19. Molecular characterization of virulence genes of Streptococcus equi subsp. equi and Streptococcus equi subsp. zooepidemicus in equines

    Directory of Open Access Journals (Sweden)

    R. Javed

    2016-08-01

    Full Text Available Aim: The aim was to determine the occurrence of streptococci in equines in Jammu (R. S. Pura, Katra, characterization of Streptococci equi subsp. equi and Streptococcus equi subsp. zooepidemicus with respect to their virulence traits and to determine antibiotic sensitivity pattern of virulent Streptococcus isolates. Materials and Methods: A total of 96 samples were collected from both clinically affected animals (exhibiting signs of respiratory tract disease and apparently healthy animals and were sent to laboratory. The organisms were isolated on Columbia nalidixic acid agar containing 5% sheep blood as well as on sheep blood agar and confirmed by cultural characteristics and biochemical tests. Molecular detection of Streptococcus was done directly from cultures using sodA and seM gene-based polymerase chain reaction (PCR. Antibiogram was performed against five antibiotics such as amoxicillin, penicillin G, streptomycin, rifampicin, and methicillin. Results: During this study, a total 40 streptococcal isolates were obtained out of which 2 isolates were of S. equi subsp. equi, 12 isolates were from S. equi subsp. zooepidemicus. In the PCR-based detection, we revealed amplicons of 235 bp and 679 bp for confirmation of sodA and seM gene, respectively. In antibiogram, two isolates of S. equi subsp. equi were found resistant to penicillin G, and all other isolates were found sensitive to amoxicillin and streptomycin. Conclusion: The majority of streptococcal infections was due to S. equi subsp. Zooepidemicus, and thus was recognized as a potential pathogen of diseases of equines besides S. equi subsp. equi.

  20. Estudo do leite de éguas sadias ou portadoras de mastite subclínica, pelo teste de Whiteside, análise microbiológica e contagem de células somáticas

    Directory of Open Access Journals (Sweden)

    Nereu Carlos Prestes

    1999-01-01

    Full Text Available Com o objetivo de identificar a microbiota existente no leite de éguas normais ou portadoras de mastite subclínica, coletaram-se amostras (10 a 15 ml de leite de 38 animais, que foram examinadas pelo teste de Whiteside, após a homogeneização das amostras dos dois tetos de cada animal. Os resultados foram negativos. Os exames microbiológicos realizados em meios de ágar sangue bovino 10% e ágar MacConkey revelaram presença de bactérias do gênero Staphylococcus spp. e Streptococcus spp. A contagem de células somáticas de amostras individuais de cada teto revelou números superiores a 500.000 células/ml de leite em somente 9,3% das 73 amostras de leite examinadas. Os resultados sugerem a realização de novos estudos objetivando-se a padronização do número de células somáticas no leite de éguas.

  1. Poststreptococcal keratouveitis associated with group C streptococcus pharyngitis

    Directory of Open Access Journals (Sweden)

    Nataneli N

    2011-09-01

    Full Text Available Nathaniel Nataneli1, Zenia P Aguilera1, Pearl S Rosenbaum1, Tamar Goldstein1,2, Martin Mayers11Department of Ophthalmology, Bronx-Lebanon Hospital Center, Albert Einstein College of Medicine, Bronx, NY, USA; 2Sackler School of Medicine, Tel Aviv University, Tel Aviv, IsraelPurpose: To report the first case of poststreptococcal syndrome uveitis (PSU in association with group C streptococcus (GCS.Patients and methods: Chart review of a 24-year-old man who presented with bilateral ocular redness, pain, and photophobia for 5 days and "white rings" around his eyes for a duration of 3 days. The patient further reported fever and sore throat in the preceding week. Slit-lamp examination showed bilateral keratouveitis. A thorough uveitis workup, antistreptolysin O (ASLO titer, and throat culture were obtained. The patient was treated with frequent topical steroids and systemic doxycycline. The uveitis and keratitis subsided over the next few weeks, leaving extensive peripheral keratolysis.Results: The results of laboratory diagnostic testing revealed an elevated ASLO, C-reactive protein, as well as HLA-B27 positivity. Throat cultures grew beta-hemolytic GCS; group A streptococcus was culture negative.Conclusion: GCS pharyngitis may be a causative organism of PSU.Keywords: pharyngitis, keratolysis, keratouveitis

  2. Characterization of Exopolysaccharide Produced by Streptococcus thermophilus CC30

    Directory of Open Access Journals (Sweden)

    Sri Lakshmi Ramya Krishna Kanamarlapudi

    2017-01-01

    Full Text Available An exopolysaccharide (EPS producing strain CC30 was isolated from raw milk and identified as Streptococcus thermophilus with morphological and 16S sequencing analysis. The strain was shown to produce 1.95 g/L of EPS when grown in skim milk lactose medium at 30°C by increasing the viscosity of the medium. The EPS was isolated and purified, and it was shown to consist of glucose and galactose in 1 : 1 ratio, with molecular weights ranging from 58 to 180 kDa. FTIR spectroscopy indicated the EPS to have amide, hydroxyl, and carboxyl groups. Under Atomic Force Microscopy, EPS showed spike-like lumps of EPS. Scanning Electron Microscopy (SEM studies showed that it had irregular lumps with a coarse surface. The EPS displayed pseudoplastic nature. Thermogravimetric analysis (TGA reported a degradation temperature of 110.84°C. The purified EPS exhibited reducing activity, hydrogen peroxide radical scavenging activity, and emulsification activity. The results of the present study indicated that EPS producing Streptococcus thermophilus could serve as a promising candidate for further exploitation in food industry.

  3. Microbiological assay for thymine using a mutant of Streptococcus faecalis.

    Science.gov (United States)

    DOCTOR, V M

    1962-07-01

    Doctor, V. M. (University of Texas, Houston). Microbiological assay for thymine using a mutant of Streptococcus faecalis. J. Bacteriol. 84:17-22. 1962.-A rapid microbiological assay procedure for the determination of thymine was devised. The test organism, Streptococcus faecalis Akt, a mutant of S. faecalis ATCC 8043, gives one-half the maximal growth response to 1.6 mug of thymine (assay range 0.5 to 2.5 mug) or to a molar equivalent (3.2 mug) of thymidine. Under these experimental conditions, 80 mug of 5-methylcytosine or 150 mug of thymidylic acid replace the thymine or thymidine requirement of the test organism. Addition of a mixture of adenine, guanine, and xanthine at a level of 40 mug/ml of each or higher to the basal medium, or addition of a mixture of deoxyadenosine and deoxyguanosine at a level of 80 mug/ml of each or higher to the basal medium, inhibited the thymine or thymidine growth response of the organism. Thymine activities of rat and chick tissues were determined by this procedure. The data on the recovery of added thymine to tissues gave 84 to 103% recovery. Thymus, spleen, small intestine, and ventral prostate were higher in thymine activities as compared with other tissues.

  4. Successful management of late-onset Streptococcus mitis endophthalmitis

    Directory of Open Access Journals (Sweden)

    Chon J

    2017-10-01

    Full Text Available Jinmann Chon,1 Moosang Kim2 1Department of Rehabilitation Medicine, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, 2Department of Ophthalmology, School of Medcine, Kangwon National University, Chuncheon, Korea Abstract: Endophthalmitis following intraocular surgery can be devastating. This case report demonstrates successful management of late-onset Streptococcus mitis endophthalmitis treated by vitrectomy, panretinal photocoagulation (PRP and silicone oil tamponade. A 75-year-old man presented with painful vision loss in his right eye. The patient had uneventful phacoemulsification and intraocular lens implantation in the right eye at an outside clinic 6 weeks prior. Examination disclosed hypopyon and vitritis, as well as discrete inflammatory collections in the vitreous. The patient underwent vitrectomy with PRP and silicone oil tamponade. Vitreous cultures were positive for S. mitis, a pathogen associated with severe tissue damage and poor clinical outcomes. One month after the surgery, intraocular inflammation was stabilized, and visual acuity was improved from light perception to 20/200. Aggressive surgical management may play a role in improving outcomes in these patients. Keywords: late-onset endophthalmitis, Streptococcus mitis, vitrectomy 

  5. Mechanisms of group A Streptococcus resistance to reactive oxygen species

    Science.gov (United States)

    Henningham, Anna; Döhrmann, Simon; Nizet, Victor; Cole, Jason N.

    2015-01-01

    Streptococcus pyogenes, also known as group A Streptococcus (GAS), is an exclusively human Gram-positive bacterial pathogen ranked among the ‘top 10’ causes of infection-related deaths worldwide. GAS commonly causes benign and self-limiting epithelial infections (pharyngitis and impetigo), and less frequent severe invasive diseases (bacteremia, toxic shock syndrome and necrotizing fasciitis). Annually, GAS causes 700 million infections, including 1.8 million invasive infections with a mortality rate of 25%. In order to establish an infection, GAS must counteract the oxidative stress conditions generated by the release of reactive oxygen species (ROS) at the infection site by host immune cells such as neutrophils and monocytes. ROS are the highly reactive and toxic byproducts of oxygen metabolism, including hydrogen peroxide (H2O2), superoxide anion (O2•−), hydroxyl radicals (OH•) and singlet oxygen (O2*), which can damage bacterial nucleic acids, proteins and cell membranes. This review summarizes the enzymatic and regulatory mechanisms utilized by GAS to thwart ROS and survive under conditions of oxidative stress. PMID:25670736

  6. Highly virulent M1 Streptococcus pyogenes isolates resistant to clindamycin.

    Science.gov (United States)

    Plainvert, C; Martin, C; Loubinoux, J; Touak, G; Dmytruk, N; Collobert, G; Fouet, A; Ploy, M-C; Poyart, C

    2015-01-01

    Emm1-type group A Streptococcus (GAS), or Streptococcus pyogenes, is mostly responsible for invasive infections such as necrotizing fasciitis (NF) and streptococcal toxic shock syndrome (STSS). The recommended treatment of severe invasive GAS infections is a combination of clindamycin and penicillin. Until 2012, almost all emm1 isolates were susceptible to clindamycin. We aimed to identify the phenotypic and genotypic characteristics of emm1 GAS clone resistant to clindamycin. GAS strains were characterized by emm sequence typing, detection of genes encoding pyrogenic exotoxins or superantigens. Cluster analysis was performed by pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST). Antibiotic susceptibility was assessed using disk diffusion and resistance genes were detected by PCR. A total of 1321 GAS invasive isolates were analyzed between January 2011 and December 2012. The overall number of invasive isolates resistant to clindamycin was 52 (3.9%); seven of them were emm1 isolates. All isolates had the same genomic markers: macrolide resistance due to the presence of the erm(B) gene, emm subtype 1.0, the same toxin or superantigen profile, PFGE pattern and sequence type. This is the first description of highly virulent GAS emm1 isolates resistant to clindamycin in France. This article strengthens the need for monitoring the epidemiology of invasive GAS strains as they could lead to changes in treatment guidelines. Copyright © 2015 Elsevier Masson SAS. All rights reserved.

  7. Detection of Streptococcus pyogenes using rapid visual molecular assay.

    Science.gov (United States)

    Zhao, Xiangna; He, Xiaoming; Li, Huan; Zhao, Jiangtao; Huang, Simo; Liu, Wei; Wei, Xiao; Ding, Yiwei; Wang, Zhaoyan; Zou, Dayang; Wang, Xuesong; Dong, Derong; Yang, Zhan; Yan, Xiabei; Huang, Liuyu; Du, Shuangkui; Yuan, Jing

    2015-09-01

    Streptococcus pyogenes is an increasingly important pathogen in many parts of the world. Rapid and accurate detection of S. pyogenes aids in the control of the infection. In this study, a loop-mediated isothermal amplification (LAMP) assay was developed and validated for the specific detection of S. pyogenes. The assay incorporates two methods: a chromogenic analysis using a calcein/Mn(2+) complex and real-time turbidity monitoring to assess the reaction. Both methods detected the target DNA within 60 min under 64°C isothermal conditions. The assay used specifically designed primers to target spy1258, and correctly identified 111 strains of S. pyogenes and 32 non-S. pyogenes strains, including other species of the genus Streptococcus. Tests using reference strains showed that the LAMP assay was highly specific. The sensitivity of the assay, with a detection limit of 1.49 pg DNA, was 10-fold greater than that of PCR. The LAMP assay established in this study is simple, fast and sensitive, and does not rely upon any special equipment; thus, it could be employed in clinical diagnosis. © FEMS 2015. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  8. A multiphasic typing approach to subtype Streptococcus equi subspecies equi.

    Science.gov (United States)

    Lanka, Saraswathi; Borst, Luke B; Patterson, Sheila K; Maddox, Carol W

    2010-11-01

    The objective of the present investigation was to differentiate between strains of Streptococcus equi subspecies equi implicated in abscess formation in vaccinated horses. Streptococcus equi isolates recovered from clinical specimens associated with equine strangles cases submitted to the University of Illinois Veterinary Diagnostic Laboratory were compared with S. equi isolates representing at least 12 lots of a commercial modified live vaccine (MLV) to determine whether the isolates obtained from the abscesses were vaccine or wild type. Genotyping techniques evaluated included enterobacterial repetitive intergenic consensus polymerase chain reaction (PCR), repetitive extragenic palindrome PCR, BOX element PCR, ribotyping, and pulsed-field gel electrophoresis (PFGE). Phenotypic evaluations were performed using the Biolog GP2 Microplate (hereafter, Biolog). In cases where Biolog and PFGE results did not coincide, a single nucleotide polymorphism located in the upstream regulatory region of szp gene was used to identify the S. equi strains. PFGE and Biolog successfully differentiated wild-type S. equi strains isolated from clinical submissions from isolates of the MLV. PFGE genotyping enabled further subtyping of the wild-type strains, whereas Biolog combined with szp sequencing was useful in differentiating the MLV strain from its wild-type progenitor. Deletion of a single guanine residue located in the upstream regulatory region of the szp gene appears to be conserved among vaccine isolates, and shows a 98.5% correlation to Biolog identification. This multiphasic approach can be used to answer specific diagnostic questions pertaining to the source of infection and/or outbreak, or to address quarantine concerns.

  9. Comparative transcriptomic analysis of streptococcus pseudopneumoniae with viridans group streptococci.

    Science.gov (United States)

    Park, Hee Kuk; Myung, Soon Chul; Kim, Wonyong

    2012-07-06

    Streptococcus pseudopneumoniae, is a novel member of the genus Streptococcus, falling close to related members like S. pneumoniae, S. mitis, and S. oralis. Its recent appearance has shed light on streptococcal infections, which has been unclear till recently. In this study, the transcriptome of S. pseudopneumoniae CCUG 49455T was analyzed using the S. pneumoniae R6 microarray platform and compared with those of S. pneumoniae KCTC 5080T, S. mitis KCTC 3556T, and S. oralis KCTC 13048T strains. Comparative transcriptome analysis revealed the extent of genetic relatedness among the species, and implies that S. pseudopneumoniae is the most closely related to S. pneumoniae. A total of 489, 444 and 470 genes were upregulated while 347, 484 and 443 were downregulated relative to S. pneumoniae in S. pseudopneumoniae, S. oralis and S. mitis respectively. Important findings were the up-regulation of TCS (two component systems) and transposase which were found to be specific to S. pseudopneumoniae. This study provides insight to the current understanding of the genomic content of S. pseudopneumoniae. The comparative transcriptome analysis showed hierarchical clustering of expression data of S. pseudopneumoniae with S. pneumoniae and S. mitis with S. oralis. This proves that transcriptional profiling can facilitate in elucidating the genetic distance between closely related strains.

  10. Comparative transcriptomic analysis of streptococcus pseudopneumoniae with viridans group streptococci

    Directory of Open Access Journals (Sweden)

    Park Hee

    2012-07-01

    Full Text Available Abstract Background Streptococcus pseudopneumoniae, is a novel member of the genus Streptococcus, falling close to related members like S. pneumoniae, S. mitis, and S. oralis. Its recent appearance has shed light on streptococcal infections, which has been unclear till recently. In this study, the transcriptome of S. pseudopneumoniae CCUG 49455T was analyzed using the S. pneumoniae R6 microarray platform and compared with those of S. pneumoniae KCTC 5080T, S. mitis KCTC 3556T, and S. oralis KCTC 13048T strains. Results Comparative transcriptome analysis revealed the extent of genetic relatedness among the species, and implies that S. pseudopneumoniae is the most closely related to S. pneumoniae. A total of 489, 444 and 470 genes were upregulated while 347, 484 and 443 were downregulated relative to S. pneumoniae in S. pseudopneumoniae, S. oralis and S. mitis respectively. Important findings were the up-regulation of TCS (two component systems and transposase which were found to be specific to S. pseudopneumoniae. Conclusions This study provides insight to the current understanding of the genomic content of S. pseudopneumoniae. The comparative transcriptome analysis showed hierarchical clustering of expression data of S. pseudopneumoniae with S. pneumoniae and S. mitis with S. oralis. This proves that transcriptional profiling can facilitate in elucidating the genetic distance between closely related strains.

  11. Milleri group streptococcus--a stepchild in the viridans family.

    Science.gov (United States)

    Siegman-Igra, Y; Azmon, Y; Schwartz, D

    2012-09-01

    The purpose of this investigation was to provide a comprehensive review of the pathogenic role and spectrum of disease of milleri group streptococci, with special attention to bloodstream invasion and to possible differential roles among the three species. All consecutive isolates of milleri group streptococci from any anatomic source, during a 37-month period, in a tertiary care teaching hospital in Tel-Aviv, Israel, were thoroughly investigated. Identification to the species level was performed by an automated system.Streptococcus anginosus constituted 82% of the 245 patient-unique isolates from hospitalized patients. All nonurinary isolates were involved in pyogenic infections mostly originating from the gastrointestinal tract, with bacteremia in 28 cases. The 71 urinary isolates represented either urinary tract infection or nonsignificant bacteriuria. No specific association could be detected between species and the infection site, except for a higher relative representation of Streptococcus constellatus in bacteremia. Milleri group streptococci are common in clinical practice and play a different pathogenic role to other viridans streptococci. Due to their invariable association with pyogenic processes, their presence in blood warrants immediate focus identification. In addition, they have a previously unappreciated clinical niche concerning urinary tract infection. The identification of viridans streptococci to the species level is of paramount clinical significance.

  12. Streptococcus bovis Bacteremia in Neonates in a Predominantly Hispanic Population.

    Science.gov (United States)

    Alvarez, Alicia; Jia, Yi; Garcia, Cesar J; Rosas-Blum, Eduardo D; Boman, Darius; Zuckerman, Marc J

    2015-01-01

    Streptococcus bovis bacteremia has been associated with gastrointestinal diseases, especially colon cancer, neoplastic colon polyps, and other malignancies of the GI tract in adults. Sporadic cases of S. bovis disease have also been reported in neonates and young infants. Although uncommon, S. bovis infection can cause fulminant neonatal sepsis and meningitis. We report a series of pediatric patients with S. bovis bacteremia in a county hospital in a United States-Mexico border city in order to examine the demographic and clinical associations. We characterized the demographic and clinical features in all pediatric patients with blood cultures positive for S. bovis at University Medical Center in El Paso, TX, USA between January 2000 and December 2010. Hospital records were systematically reviewed by using a standardized protocol. A total of seven episodes of S. bovis bacteremia were documented in seven pediatric patients (four female and three male). Mean age was 1.2 days (range 1-3 days), all were Hispanic, average birth weight (3.25 kg). Mode of delivery was spontaneous vaginal delivery (five) and Caesarian section (two). All of our patients developed early (pediatric patients had endoscopy and none of them died. Streptococcus bovis is considered as an uncommon pathogen in the newborn, but can be associated with substantial morbidity and mortality if not identified and treated early. Physicians should be alert to the less common presentation of neonatal bacteremia due to S. bovis.

  13. Disease Manifestations and Pathogenic Mechanisms of Group A Streptococcus

    Science.gov (United States)

    Barnett, Timothy C.; McArthur, Jason D.; Cole, Jason N.; Gillen, Christine M.; Henningham, Anna; Sriprakash, K. S.; Sanderson-Smith, Martina L.; Nizet, Victor

    2014-01-01

    SUMMARY Streptococcus pyogenes, also known as group A Streptococcus (GAS), causes mild human infections such as pharyngitis and impetigo and serious infections such as necrotizing fasciitis and streptococcal toxic shock syndrome. Furthermore, repeated GAS infections may trigger autoimmune diseases, including acute poststreptococcal glomerulonephritis, acute rheumatic fever, and rheumatic heart disease. Combined, these diseases account for over half a million deaths per year globally. Genomic and molecular analyses have now characterized a large number of GAS virulence determinants, many of which exhibit overlap and redundancy in the processes of adhesion and colonization, innate immune resistance, and the capacity to facilitate tissue barrier degradation and spread within the human host. This improved understanding of the contribution of individual virulence determinants to the disease process has led to the formulation of models of GAS disease progression, which may lead to better treatment and intervention strategies. While GAS remains sensitive to all penicillins and cephalosporins, rising resistance to other antibiotics used in disease treatment is an increasing worldwide concern. Several GAS vaccine formulations that elicit protective immunity in animal models have shown promise in nonhuman primate and early-stage human trials. The development of a safe and efficacious commercial human vaccine for the prophylaxis of GAS disease remains a high priority. PMID:24696436

  14. Mechanisms of group A Streptococcus resistance to reactive oxygen species.

    Science.gov (United States)

    Henningham, Anna; Döhrmann, Simon; Nizet, Victor; Cole, Jason N

    2015-07-01

    Streptococcus pyogenes, also known as group A Streptococcus (GAS), is an exclusively human Gram-positive bacterial pathogen ranked among the 'top 10' causes of infection-related deaths worldwide. GAS commonly causes benign and self-limiting epithelial infections (pharyngitis and impetigo), and less frequent severe invasive diseases (bacteremia, toxic shock syndrome and necrotizing fasciitis). Annually, GAS causes 700 million infections, including 1.8 million invasive infections with a mortality rate of 25%. In order to establish an infection, GAS must counteract the oxidative stress conditions generated by the release of reactive oxygen species (ROS) at the infection site by host immune cells such as neutrophils and monocytes. ROS are the highly reactive and toxic byproducts of oxygen metabolism, including hydrogen peroxide (H2O2), superoxide anion (O2•(-)), hydroxyl radicals (OH•) and singlet oxygen (O2*), which can damage bacterial nucleic acids, proteins and cell membranes. This review summarizes the enzymatic and regulatory mechanisms utilized by GAS to thwart ROS and survive under conditions of oxidative stress. © FEMS 2015.

  15. Phylogenomics and the Dynamic Genome Evolution of the Genus Streptococcus

    Science.gov (United States)

    Richards, Vincent P.; Palmer, Sara R.; Pavinski Bitar, Paulina D.; Qin, Xiang; Weinstock, George M.; Highlander, Sarah K.; Town, Christopher D.; Burne, Robert A.; Stanhope, Michael J.

    2014-01-01

    The genus Streptococcus comprises important pathogens that have a severe impact on human health and are responsible for substantial economic losses to agriculture. Here, we utilize 46 Streptococcus genome sequences (44 species), including eight species sequenced here, to provide the first genomic level insight into the evolutionary history and genetic basis underlying the functional diversity of all major groups of this genus. Gene gain/loss analysis revealed a dynamic pattern of genome evolution characterized by an initial period of gene gain followed by a period of loss, as the major groups within the genus diversified. This was followed by a period of genome expansion associated with the origins of the present extant species. The pattern is concordant with an emerging view that genomes evolve through a dynamic process of expansion and streamlining. A large proportion of the pan-genome has experienced lateral gene transfer (LGT) with causative factors, such as relatedness and shared environment, operating over different evolutionary scales. Multiple gene ontology terms were significantly enriched for each group, and mapping terms onto the phylogeny showed that those corresponding to genes born on branches leading to the major groups represented approximately one-fifth of those enriched. Furthermore, despite the extensive LGT, several biochemical characteristics have been retained since group formation, suggesting genomic cohesiveness through time, and that these characteristics may be fundamental to each group. For example, proteolysis: mitis group; urea metabolism: salivarius group; carbohydrate metabolism: pyogenic group; and transcription regulation: bovis group. PMID:24625962

  16. Valor predictor del cociente saturación hemoglobina/fio2 en pacientes pediátricos con insuficiencia respiratoria aguda debida a neumonía tratados con ventilación no invasiva. Predictive value of the pulse oximetric saturation/fraction of inspired oxygen ratio in pediatric patients with acute respiratory failure due to pneumonia treated with non-invasive ventilation

    OpenAIRE

    Palanca Arias, Daniel

    2014-01-01

    RESUMEN: El uso de la ventilación no invasiva (VNI) en pacientes con fracaso respiratorio hipoxémico debido a neumonía es controvertido, alcanzando elevadas tasas de fracaso en el Síndrome de Distrés Respiratorio Agudo (SDRA). Recientemente, el cociente SpO2/FiO2 (SF) se ha equiparado al cociente paO2/FiO2 (PF) para la valoración del SDRA. Determinamos en una cohorte de pacientes, diagnosticados de neumonía y tratados con VNI, si el cociente SF es una variable con valor predictor de fraca...

  17. Influência da temperatura na infecção de tilápias do Nilo por Streptococcus agalactiae

    Directory of Open Access Journals (Sweden)

    Paulo Fernandes Marcusso

    2015-04-01

    Full Text Available Mudanças ambientais afetam a homeostase dos peixes, tornando-os mais suscetíveis a doenças. No Brasil, tem sido relatados surtos de infecção por Streptococcus agalactiae em tilápia do Nilo, principalmente quando se encontram fora da zona de conforto térmico. No presente trabalho, foi avaliada a taxa de mortalidade e determinado quais foram os órgãos mais afetados por essa bactéria em temperaturas que ocorrem naturalmente no Sul do Brasil. Quarenta tilápias-do-nilo (Oreochromis niloticus foram infectadas por Streptococcus agalactiae e distribuídas em quatro grupos (n = 10, cada um deles submetidos a diferentes temperaturas: G1: 24°C, G2: 26°C, G3: 28°C e G4: 32°C. Os peixes foram monitorados durante 10 dias. Os peixes com sinais clínicos irreversíveis foram sacrificados e coletadas amostras de cérebro, fígado e rins para analise bacteriológica e molecular. Foram observados sinais compatíveis com infecção estreptocócica em todos os grupos. A taxa de mortalidade mais elevada ocorreu nos grupos mantidos nas temperaturas de 24°C e 32°C. O cérebro foi o órgão mais afetado, com a maior percentagem de isolamento de S. agalactiae pelos dois métodos de diagnostico. Os resultados sugerem que, tal como nos mamíferos, temperaturas que estão mais afastadas da zona de conforto afetam significativamente a homeostase dos peixes, aumentando a sua susceptibilidade para infecções bacterianas.

  18. Conhecendo as estrategias de acao e interacao utilizadas pelos clientes para o enfrentamento da dialise peritoneal

    Directory of Open Access Journals (Sweden)

    Felipe Kaezer dos Santos

    2013-09-01

    Full Text Available Este artigo teve por objetivo apresentar as principais estratégias de ação e interação utilizadas pelos clientes portadores de doença renal crônica para o enfrentamento da diálise peritoneal. O referencial teórico utilizado foi o Interacionismo Simbólico, por ser um arcabouço que valoriza o significado da interação como determinante do comportamento humano. A Teoria Fundamentada nos Dados foi utilizada como referencial metodológico. Após a sua obtenção, realizada por meio de um roteiro de entrevista semi-estruturado, os dados foram gravados, transcritos, codificados e organizados para compor a teoria explicativa sobre o fenômeno estudado. Durante a análise foram identificados vários recursos utilizados pelos clientes, como a necessidade de obter informações sobre a diálise peritoneal, o refúgio na espiritualidade e a falsa ilusão da cura. Destaca-se também a importância da rede de apoio, em que o enfermeiro poderá atuar como facilitador do processo de enfrentamento, em prol da adaptação dos clientes à nova realidade.

  19. Cartografia do lugar de moradia dos adolescentes com passagem pelo CENSE I de Londrina

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    Claudemir Zulim

    2011-07-01

    Full Text Available Este artigo apresenta os resultados da análise dos dados documentais obtidos na pesquisa realizada no Centro de Socioeducação I - CENSE I, de Londrina, que objetiva identificar, mapear e analisar as condições sócio-espaciais dos bairros de origem dos adolescentes com passagem pela Unidade. O CENSE I é uma unidade de internação provisória por onde passam todos os adolescentes apreendidos em flagrante de ato infracional e encaminhados à autoridade policial competente, que avalia se eles serão liberados para seus familiares ou se de acordo com a gravidade dos fatos que eles sejam ouvidos pelo representante do Ministério Público, enquanto aguardam as entrevistas para a realização das oitivas junto ao Juizado da Vara da Infância e Adolescência. Analisa os dados sobre o lugar de moradia dos adolescentes com passagem pela Unidade no ano de 2009. Utiliza as técnicas de Cartografia e de programas específicos com os quais foram produzidos gráficos e mapas onde são facilmente visualizados os locais de residência desses adolescentes. Verifica que os locais de maior concentração de adolescentes com passagem pelo CENSE I também concentram graves problemas sócio-espaciais, geralmente ligados a ocupações irregulares e em fundos de vale.

  20. Enfermidades determinadas pelo princípio radiomimético de Pteridium aquilinum (Polypodiaceae

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    França Ticiana do Nascimento

    2002-01-01

    Full Text Available Por meio de revisão da literatura pertinente foram coligidos e são apresentados os principais dados relativos aos aspectos epidemiológicos, toxicológicos, clínicos, anátomo e histopatológicos observados nos casos de intoxicação pelo princípio radiomimético de Pteridium aquilinum (L. Kuhn. São abordados a Hematúria Enzoótica Bovina (HEB, os Carcinomas das Vias Digestivas Superiores (CVDS, a Diátese Hemorrágica (DH, os Tumores Intestinais (TI e a Degeneração Progressiva da Retina (DPR, com ênfase proporcional à importância de cada entidade. Esse estudo objetiva chamar a atenção para o especial significado dessa planta para a pecuária, em função dos prejuízos econômicos por ela determinados e, também, pelo provável risco que ela representa para a saúde humana.

  1. Acordes e dissonâncias do letramento científico proposto pelo PISA 2015

    Directory of Open Access Journals (Sweden)

    Andrea Mara Vieira

    2017-08-01

    Full Text Available A nossa proposta é investigar a existência ou não de sintonia entre o conceito acadêmico de letramento científico e aquele previsto nos documentos do Programme for International Student Assessment (PISA e nas normas educacionais. A despeito de toda complexidade e polissemia conceitual existente em torno do conceito de alfabetização/letramento científico, desenvolvemos uma análise teórico-comparativa desse conceito na forma como é concebido pelos especialistas, em comparação com o conceito de letramento científico previsto na base avaliativa do PISA 2015, considerando também a previsão normatizada pelas políticas públicas educacionais. Ao final, identificamos menos acordes e, por variados motivos, mais dissonâncias, que podem servir como contributo para uma reflexão sobre a validade e relevância do PISA enquanto instrumento de avaliação, bem como sobre o tipo de aprendizagem a ser assegurada pelo nosso sistema educacional.

  2. Nota Fiscal Paulista: principais características percebidas pelos cidadãos paulistas

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    Sérgio Roberto da Silva

    2018-03-01

    Full Text Available Estima-se que 60% dos valores de tributos são sonegados pelo varejo (ROLLI e FERNANDES, 2008. Como resposta o governo Paulista criou o projeto NFP-Nota Fiscal Paulista. Nesse projeto a identificação do contribuinte através do CPF gera créditos (benefícios financeiros ao comprador/contribuinte e assegura o pagamento dos tributos por parte do fornecedor/ comerciante. O objetivo deste trabalho foi identificar as  principais características percebidas pelos cidadãos paulistas com relação ao projeto.  A pesquisa envolveu 132 pessoas em um formulário com 25 assertivas no estilo Likert.  Os resultados indicam que os contribuintes aceitam e participam do projeto. No entanto desconhecem outras características do projeto, por exemplo, doação de créditos a instituições filantrópicas. A maior forma de ressarcimento dos créditos é o depósito em conta corrente. Parte dos contribuintes acredita que as informações referentes aos valores de credito não são repassados a Receita Federal. Dessa forma busca-se contribuir com um estudo sob a ótica dos contribuintes em relação a esse projeto.Nota Fiscal Paulista, análise fatorial, sonegação de tributos

  3. Streptococcus oriloxodontae sp. nov., isolated from the oral cavities of elephants.

    Science.gov (United States)

    Shinozaki-Kuwahara, Noriko; Saito, Masanori; Hirasawa, Masatomo; Takada, Kazuko

    2014-11-01

    Two strains were isolated from oral cavity samples of healthy elephants. The isolates were Gram-positive, catalase-negative, coccus-shaped organisms that were tentatively identified as a streptococcal species based on the results of biochemical tests. Comparative 16S rRNA gene sequence analysis suggested classification of these organisms in the genus Streptococcus with Streptococcus criceti ATCC 19642(T) and Streptococcus orisuis NUM 1001(T) as their closest phylogenetic neighbours with 98.2 and 96.9% gene sequence similarity, respectively. When multi-locus sequence analysis using four housekeeping genes, groEL, rpoB, gyrB and sodA, was carried out, similarity of concatenated sequences of the four housekeeping genes from the new isolates and Streptococcus mutans was 89.7%. DNA-DNA hybridization experiments suggested that the new isolates were distinct from S. criceti and other species of the genus Streptococcus. On the basis of genotypic and phenotypic differences, it is proposed that the novel isolates are classified in the genus Streptococcus as representatives of Streptococcus oriloxodontae sp. nov. The type strain of S. oriloxodontae is NUM 2101(T) ( =JCM 19285(T) =DSM 27377(T)). © 2014 IUMS.

  4. Streptococcus caprae sp. nov., isolated from Iberian ibex (Capra pyrenaica hispanica).

    Science.gov (United States)

    Vela, A I; Mentaberre, G; Lavín, S; Domínguez, L; Fernández-Garayzábal, J F

    2016-01-01

    Biochemical and molecular genetic studies were performed on a novel Gram-stain-positive, catalase-negative, coccus-shaped organism isolated from tonsil samples of two Iberian ibexes. The micro-organism was identified as a streptococcal species based on its cellular, morphological and biochemical characteristics. 16S rRNA gene sequence comparison studies confirmed its identification as a member of the genus Streptococcus, but the organism did not correspond to any species of this genus. The nearest phylogenetic relative of the unknown coccus from ibex was Streptococcus porci 2923-03T (96.6 % 16S rRNA gene sequence similarity). Analysis based on rpoB and sodA gene sequences revealed sequence similarity values lower than 86.0 and 83.8 %, respectively, from the type strains of recognized Streptococcus species. The novel bacterial isolate was distinguished from Streptococcus porci and other Streptococcus species using biochemical tests. Based on both phenotypic and phylogenetic findings, it is proposed that the unknown bacterium be classified as representing a novel species of the genus Streptococcus, for which the name Streptococcus caprae sp. nov. is proposed. The type strain is DICM07-02790-1CT ( = CECT 8872T = CCUG 67170T).

  5. [A novel TaqMan® MGB probe for specifically detecting Streptococcus mutans].

    Science.gov (United States)

    Zheng, Hui; Lin, Jiu-Xiang; DU, Ning; Chen, Feng

    2013-10-18

    To design a new TaqMan® MGB probe for improving the specificity of Streptococcus mutans's detection. We extracted six DNA samples from different streptococcal strains for PCR reaction. Conventional nested PCR and TaqMan® MGB real-time PCR were applied independently. The first round of nested PCR was carried out with the bacterial universal primers, while a second PCR was conducted by using primers specific for the 16S rRNA gene of Streptococcus mutans. The TaqMan® MGB probe for Streptococcus mutans was designed from sequence analyses, and the primers were the same as nested PCR. Streptococcus mutans DNA with 2.5 mg/L was sequentially diluted at 5-fold intervals to 0.16 μg/L. Standard DNA samples were used to generate standard curves by TaqMan® MGB real-time PCR. In the nested PCR, the primers specific for Streptococcus mutans also detected Streptococcus gordonii with visible band of 282 bp, giving false-positive results. In the TaqMan® MGB real-time PCR reaction, only Streptococcus mutans was detected. The detection limitation of TaqMan® MGB real-time PCR for Streptococcus mutans 16S rRNA gene was 20 μg/L. We designed a new TaqMan® MGB probe, and successfully set up a PCR based method for detecting oral Streptococcus mutans. TaqMan® MGB real-time PCR is a both specific and sensitive bacterial detection method.

  6. Improved method for rapid and accurate isolation and identification of Streptococcus mutans and Streptococcus sobrinus from human plaque samples.

    Science.gov (United States)

    Villhauer, Alissa L; Lynch, David J; Drake, David R

    2017-08-01

    Mutans streptococci (MS), specifically Streptococcus mutans (SM) and Streptococcus sobrinus (SS), are bacterial species frequently targeted for investigation due to their role in the etiology of dental caries. Differentiation of S. mutans and S. sobrinus is an essential part of exploring the role of these organisms in disease progression and the impact of the presence of either/both on a subject's caries experience. Of vital importance to the study of these organisms is an identification protocol that allows us to distinguish between the two species in an easy, accurate, and timely manner. While conducting a 5-year birth cohort study in a Northern Plains American Indian tribe, the need for a more rapid procedure for isolating and identifying high volumes of MS was recognized. We report here on the development of an accurate and rapid method for MS identification. Accuracy, ease of use, and material and time requirements for morphological differentiation on selective agar, biochemical tests, and various combinations of PCR primers were compared. The final protocol included preliminary identification based on colony morphology followed by PCR confirmation of species identification using primers targeting regions of the glucosyltransferase (gtf) genes of SM and SS. This method of isolation and identification was found to be highly accurate, more rapid than the previous methodology used, and easily learned. It resulted in more efficient use of both time and material resources. Copyright © 2017 Elsevier B.V. All rights reserved.

  7. Streptococcus mutans and Streptococcus sobrinus colonization and caries experience in 3- and 5-year-old Thai children.

    Science.gov (United States)

    Saraithong, P; Pattanaporn, K; Chen, Z; Khongkhunthian, S; Laohapensang, P; Chhun, N; Pattanaporn, W; Gaw, H Y; Li, Y

    2015-11-01

    The aim of this study was to examine the colonization of Streptococcus mutans and Streptococcus sobrinus in supra-gingival plaque samples and to determine their correlation with the prevalence of early childhood caries (ECC) in Thai children. A total of 344 Thai children, ages 3 and 5 years, were invited to participate in this study. Caries status of the children was examined. Supra-gingival plaque samples were collected. Quantitative real-time PCR was performed to evaluate DNA levels of S. mutans and S. sobrinus. Eighty-five percent of the children were colonized by S. mutans and 50.9% of them were colonized by S. sobrinus. The prevalence of ECC was 43.8% and 56.2% among 3- and 5-year-old children, respectively, and was significantly associated with the presence of S. mutans and S. sobrinus. The severity of ECC was significantly correlated with increased DNA levels of the two bacteria. Children who were positive for S. mutans and S. sobrinus (Sm+/Sb+) were 8 times or 44 times more likely to experience ECC than children who were Sm-/Sb + or were Sm-/Sb-. The study evidence further suggest that children colonized by both S. mutans and S. sobrinus are at the higher risk for ECC. Molecular-based qPCR can be used to detect and quantify S. mutans and S. sobrinus colonization for epidemiological and clinical studies for ECC risk assessment.

  8. [Study on the counting of Streptococcus mutans, Streptococcus sanguis, Haemophilus actinomycetemcomitans by methyl thiazolyl tetrazolium colorimetric method].

    Science.gov (United States)

    Wang, Zhong-Chao; Fan, Li-Yuan; Jiang, Jun-Qiang; Cai, Wei; Ding, Yi

    2010-06-01

    To explore the feasibility of methyl thiazolyl tetrazolium (MTT) colorimetric method and the applied condition for the normal bacteria in the mouth, as Streptococcus mutans (S. mutans), Streptococcus sanguis (S. sanguis), Haemophilus actinomycetemcomitans (H. actinomycetemcomitans). Colony forming units (CFU) which was the standard antitheses was used to count bacteria. This study would gain some parameters by changing wavelength, reactive time, dosage and so on. MTT colorimetric method was applied in the counting of S. mutans, S. sanguis and H. actinomycetemcomitans. When counting S. mutans, the best wavelength was 510 nm, the best range was 1.5 x 10(5) - 1.0 x 10(7) CFU x mL(-1). When counting S. sanguis, the best wavelength was 545 nm, the best range was 1.5 x 10(5) - 2.0 x 10(7) CFU x mL(-1). When counting H. actinomycetemcomitans, the best wavelength was 557 nm, the best range was 1.0 x 10(6) - 5.0 x 10(7) CFU x mL(-1). MTT colorimetric method can be used for different aged S. mutans, S. sanguis and H. actinomycetemcomitans. Oral bacteria could be counted by MTT colorimetric method, which is fast and convenient.

  9. Interspecies competition and inhibition within the oral microbial flora: environmental factors influence the inhibition of Streptococcus mutans by Streptococcus oligofermentans.

    Science.gov (United States)

    Liu, Ying; Wu, Ligeng; Wu, Fei; Chu, Lei; Liu, Xinxin; Xia, Keke; Wang, Yinghui

    2012-06-01

    Dental caries is a bacterial infectious disease. Streptococcus mutans is the primary pathogen that causes dental caries. Streptococcus oligofermentans is a new oral streptococcal species that can inhibit the growth of S. mutans specifically. The study aimed to assess the inhibition of S. mutans by S. oligofermentans under different oral environmental conditions. The inhibition under different carbohydrate and oxygen conditions was investigated in vitro using an interspecies interaction assay. The 4-aminoantipyine (4-ATTP) method was used to measure the yield and the initial production rate of H(2) O(2) in S. oligofermentans. The inhibitory effect was enhanced when the bacteria were cultured with carbohydrates and under aerobic conditions, or when S. oligofermentans was inoculated earlier than S. mutans. The initial synthesis rates of H(2) O(2) by S. oligofermentans were higher in the presence of carbohydrates and in aerobic culture conditions. In terms of the total H(2) O(2) yield, the effect of the environmental conditions was as follows: no carbohydrates > sucrose> glucose, and aerobic conditions > anaerobic conditions. We conclude that the presence of carbohydrate and oxygen significantly affect the ability of S. oligofermentans to inhibit the growth of S. mutans. The difference in inhibitory effect may be attributed to changes in the capacity of S. oligofermentans to produce H(2) O(2) . © 2012 Eur J Oral Sci.

  10. Identification of a high-virulence clone of type III Streptococcus agalactiae (group B Streptococcus) causing invasive neonatal disease.

    Science.gov (United States)

    Musser, J M; Mattingly, S J; Quentin, R; Goudeau, A; Selander, R K

    1989-06-01

    Chromosomal genotypes of 128 isolates of six serotypes (Ia, Ib, Ic, II, Ic/II, and III) of Streptococcus agalactiae (group B Streptococcus) recovered predominantly from human infants in the United States were characterized by an analysis of electrophoretically demonstrable allelic profiles at 11 metabolic enzyme loci. Nineteen distinctive electrophoretic types (ETs), representing multilocus clonal genotypes, were identified. Mean genetic diversity per locus among ETs of isolates of the same serotype was, on average, nearly equal to that in all 19 ETs. Cluster analysis of the ETs revealed two primary phylogenetic divisions at a genetic distance of 0.65. A single clone (ET 1) represented by 40 isolates expressing type III antigen formed division I. Division II was composed of 18 ETs in three major lineages diverging from one another at distances greater than 0.35 and included strains of all six antigenic classes. The type III organisms in division I produce more extracellular neuraminidase and apparently are more virulent than the type III strains in division II, which are related to strains of other serotypes that cause disease much less frequently. The existence of this unusually virulent clone accounts, in major part, for the high morbidity and mortality associated with infection by type III organisms.

  11. Protein F, a fibronectin-binding protein, is an adhesin of the group A streptococcus Streptococcus pyogenes.

    Science.gov (United States)

    Hanski, E; Caparon, M

    1992-07-01

    Binding to fibronectin has been suggested to play an important role in adherence of the group A streptococcus Streptococcus pyrogenes to host epithelial cells; however, the identity of the streptococcal fibronectin receptor has been elusive. Here we demonstrate that the fibronectin-binding property of S. pyogenes is mediated by protein F, a bacterial surface protein that binds fibronectin at high affinity. The gene encoding protein F (prtF) produced a functional fibronectin-binding protein in Escherichia coli. Insertional mutagenesis of the cloned gene generated a mutation that resulted in the loss of fibronectin-binding activity. When this mutation was introduced into the S. pyrogenes chromosome by homologous recombination with the wild-type allele, the resulting strains no longer produced protein F and lost their ability to bind fibronectin. The mutation could be complemented by prtF introduced on a plasmid. Mutants lacking protein F had a much lower capacity to adhere to respiratory epithelial cells. These results demonstrate that protein F is an important adhesin of S. pyogenes.

  12. Short communication: technological and genotypic comparison between Streptococcus macedonicus and Streptococcus thermophilus strains coming from the same dairy environment.

    Science.gov (United States)

    Blaiotta, G; Sorrentino, A; Ottombrino, A; Aponte, M

    2011-12-01

    The species Streptococcus thermophilus is widely used for the preparation of several dairy products, and its technological contribution is clear. On the other hand, although Streptococcus macedonicus was first described more than 10 yr ago and, despite the scientific interest around this issue, the exact role of Strep. macedonicus in cheese making has yet to be clarified. In this study, 121 strains belonging to both species and isolated from the same dairy environment were genetically characterized by random amplification of polymorphic DNA (RAPD)-PCR and compared for the main biochemical features of technological interest, such as acid production, galactose utilization, citrate metabolism, exopolysaccharide production, and lipolytic, ureolytic, exocellular proteolytic, and decarboxylasic activities. Analysis by RAPD-PCR highlighted a remarkable genotypic heterogeneity among strains in both species, and, at a similarity level of 78%, all the isolates and reference strains of Strep. thermophilus grouped together and were well separated from the strains of Strep. macedonicus, confirming that these 2 species are different microbial entities. Comparison between genetic and phenotypic or biotechnological data did not reveal any relationships. Copyright © 2011 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

  13. A novel suicide shuttle plasmid for Streptococcus suis serotype 2 and Streptococcus equi ssp. zooepidemicus gene mutation.

    Science.gov (United States)

    Liu, Rui; Zhang, Ping; Su, Yiqi; Lin, Huixing; Zhang, Hui; Yu, Lei; Ma, Zhe; Fan, Hongjie

    2016-06-03

    The mariner-based Himar1 system has been utilized for creating mutant libraries of many Gram-positive bacteria. Streptococcus suis serotype 2 (SS2) and Streptococcus equi ssp. zooepidemicus (SEZ) are primary pathogens of swine that threaten the swine industry in China. To provide a forward-genetics technology for finding virulent phenotype-related genes in these two pathogens, we constructed a novel temperature-sensitive suicide shuttle plasmid, pMar4s, which contains the Himar1 system transposon, TnYLB-1, and the Himar1 C9 transposase from pMarA and the repTAs temperature-sensitive fragment from pSET4s. The kanamycin (Kan) resistance gene was in the TnYLB-1 transposon. Temperature sensitivity and Kan resistance allowed the selection of mutant strains and construction of the mutant library. The SS2 and SEZ mutant libraries were successfully constructed using the pMar4s plasmid. Inverse-Polymerase Chain Reaction (Inverse-PCR) results revealed large variability in transposon insertion sites and that the library could be used for phenotype alteration screening. The thiamine biosynthesis gene apbE was screened for its influence on SS2 anti-phagocytosis; likewise, the sagF gene was identified to be a hemolytic activity-related gene in SEZ. pMar4s was suitable for mutant library construction, providing more information regarding SS2 and SEZ virulence factors and illustrating the pathogenesis of swine streptococcosis.

  14. Beta-hemolytic Streptococcus dysgalactiae strains isolated from horses are a genetically distinct population within the Streptococcus dysgalactiae taxon

    Science.gov (United States)

    Pinho, Marcos D.; Erol, Erdal; Ribeiro-Gonçalves, Bruno; Mendes, Catarina I.; Carriço, João A.; Matos, Sandra C.; Preziuso, Silvia; Luebke-Becker, Antina; Wieler, Lothar H.; Melo-Cristino, Jose; Ramirez, Mario

    2016-01-01

    The pathogenic role of beta-hemolytic Streptococcus dysgalactiae in the equine host is increasingly recognized. A collection of 108 Lancefield group C (n = 96) or L (n = 12) horse isolates recovered in the United States and in three European countries presented multilocus sequence typing (MLST) alleles, sequence types and emm types (only 56% of the isolates could be emm typed) that were, with few exceptions, distinct from those previously found in human Streptococcus dysgalactiae subsp. equisimilis. Characterization of a subset of horse isolates by multilocus sequence analysis (MLSA) and 16S rRNA gene sequence showed that most equine isolates could also be differentiated from S. dysgalactiae strains from other animal species, supporting the existence of a horse specific genomovar. Draft genome information confirms the distinctiveness of the horse genomovar and indicates the presence of potentially horse-specific virulence factors. While this genomovar represents most of the isolates recovered from horses, a smaller MLST and MLSA defined sub-population seems to be able to cause infections in horses, other animals and humans, indicating that transmission between hosts of strains belonging to this group may occur. PMID:27530432

  15. Cirurgia valvar mitral e da comunicação interatrial: abordagem minimamente invasiva ou por esternotomia Mitral valve and atrial septal defect surgery: minimally invasive or sternotomy approach

    Directory of Open Access Journals (Sweden)

    Josué V. Castro Neto

    2012-08-01

    Full Text Available FUNDAMENTO: Para diminuir o trauma cirúrgico em procedimentos cardiovasculares, técnicas Minimamente Invasivas (MI foram alternativamente introduzidas. OBJETIVO: Comparar o acesso cirúrgico MI com a Esternotomia Mediana (EM para tratar a cardiopatia valvar mitral (VM e a Comunicação Interatrial (CIA. MÉTODOS: Estudo prospectivo onde quarenta pacientes foram submetidos a cirurgia para correção de cardiopatia VM ou CIA. Foram divididos em: grupo A (GA (n = 20, de acesso por minitoracotomia direita com videoassistência, e grupo B (GB (n = 20, de acesso por EM. Comparamos: tempo de pinçamento aórtico e circulação extracorpórea, tempo de permanência na Unidade de Terapia Intensiva (UTI, tempo de hospitalização e morbidade. RESULTADOS: Quinze pacientes foram submetidos a procedimento VM e 5 a correção de CIA, em cada grupo. Houve nove trocas mitrais (sete bioprotéticas e duas mecânicas e seis reconstruções no GA, e 10 trocas (todas bioprotéticas e cinco reconstruções no GB. As médias de tempo de pinçamento aórtico e circulação extracorpórea, em minutos, foram 65,1 ± 29,3 no GA, e 50,2 ± 21,4 no GB (p = 0,074; e 91,8 ± 35 no GA, e 63,7 ± 27,3 no GB (p = 0,008. As médias de tempo de UTI, em horas, foram 51,7 ± 16,3 no GA, e 55,8 ± 17,5 no GB (p = 0,45. Os tempos de hospitalização, em dias, foram 5,2 ± 1 no GA, e 6,4 ± 1,5 no GB (p = 0,009. CONCLUSÃO: O acesso MI para correção da cardiopatia VM e da CIA implicaram em maior tempo de circulação extracorpórea para a finalização do procedimento principal sem, no entanto, afetar a recuperação do paciente. Os pacientes tratados de forma MI tiveram alta hospitalar mais cedo que os pacientes tratados com esternotomia.BACKGROUND: To decrease the surgical trauma in heart procedures, minimally invasive (MI techniques were alternatively introduced. OBJECTIVE: To compare MI surgical access with median sternotomy (MS for the treatment of mitral valve (MV disease and

  16. Conjugative transfer of R-plasmids from Streptococcus faecalis to Staphylococcus aureus.

    OpenAIRE

    Schaberg, D R; Clewell, D B; Glatzer, L

    1982-01-01

    R-plasmids originally isolated from Streptococcus pyogenes(pAC1,pAM15346), Streptococcus agalactiae(pIP501), and Streptococcus faecalis(pAM beta 1) were shown to be self-transferable on filter membranes from S. faecalis JH2-2 to Staphylococcus aureus recipients. The nonconjugative plasmid pAM alpha 1 was mobilized into S. aureus by pAM beta 1. Once in S. aureus, conjugative R-plasmids could be transferred to a second S. aureus recipient or back into S. faecalis. Determinants for chloramphenic...

  17. An unique case of thoracic endovascular aortic repair (TEVAR) graft infection with Streptococcus viridans.

    Science.gov (United States)

    Zubaidah, N H; Azim, M I M; Osama, M H; Harunarashid, H; Das, S

    2012-01-01

    The incidence of infection following TEVAR is low. To the best of our knowledge, this is the first case report of post thoracic endovascular aortic repair (TEVAR) with Streptococcus viridans graft infection. A 54-year-old male underwent TEVAR for dissecting thoracic aneurysm with spinal ischaemia. He had an eventful recovery with prolonged period of stay in intensive care unit. Three months later, he presented with persistent chest discomfort and fever. Computed tomography (CT) of the thorax revealed evidence of graft infection and the blood culture grew Streptococcus viridans. The rarity of TEVAR graft infection due to Streptococcus viridans and its management are being discussed.

  18. OS BENEFÍCIOS PERCEBIDOS PELOS PRINCIPAIS STAKEHOLDERS DE UMA REDE DE EMPRESAS

    Directory of Open Access Journals (Sweden)

    Caroline Metzger

    2008-01-01

    Full Text Available O presente artigo retrata um estudo relacionado aos benefícios percebidos pelos principais stakeholders de uma rede de empresas. Para tanto, desenvolveu-se uma pesquisa bibliográfica sobre a pequena empresa, os antecedentes históricos das redes de empresas, os conceitos relacionados, as tipologias e características estruturais, os benefícios proporcionados pelas redes e apresentou-se o Programa Redes de Cooperação no Estado do Rio Grande do Sul. Descreveram-se também os conceitos de stakeholders, as suas classificações e os benefícios do relacionamento destes grupos. Considerando este contexto, o objetivo deste artigo foi identificar e analisar os benefícios percebidos pelos principais stakeholders envolvidos com a rede de cooperação Hipereletro. A metodologia utilizada foi o estudo de caso a partir dos dados coletados através da pesquisa de campo, por meio de um questionário aplicado a quatro grupos envolvidos com a Hipereletro. Após a análise dos dados, identificaram-se os benefícios percebidos por cada stakeholder. Os associados perceberam benefícios nas ações de marketing, nas negociações em conjunto e no relacionamento entre as empresas, destacam-se as promoções realizadas pelo grupo, obtenção de melhores preços nas compras e troca de informações, conhecimentos e experiências. Já os funcionários apontaram a melhora na apresentação da empresa, realização de eventos e a troca de informações entre as lojas. Para os fornecedores, os primeiros reflexos da parceria com a rede foram o aumento das vendas, a garantia de pagamento e a fidelidade das empresas. E, quanto aos clientes, destacaram-se a percepção em relação à mudança da fachada da loja, as promoções e a diferença nos preços dos produtos. Pela pesquisa, concluiu-se que todos percebem benefícios ao se relacionarem com a rede, alguns mais, outros menos. Porém, devido ao pouco tempo de existência da Hipereletro, todos acreditam no

  19. Depression in women infected with HIV Depressão em mulheres infectadas pelo HIV

    Directory of Open Access Journals (Sweden)

    Valéria Antakly de Mello

    2006-03-01

    Full Text Available OBJETIVE:The number of women with HIV infection has been on the rise in recent years, making studies of the psychiatric aspects of this condition very important. The aim of this study was to evaluate the prevalence of major depression in women with HIV infection. METHOD: A total of 120 women were studied, 60 symptomatic (with AIDS symptoms and 60 asymptomatic (without AIDS symptoms. Sociodemographic data were collected, and depressive disorders were identified. The instruments used to evaluate the depressive disorders were the SCID, DSM-IV, 17-item Hamilton depression scale, Hamilton depression scale for nonsomatic symptoms and the Beck depression scale. RESULTS: The prevalence of major depression was 25.8% and was higher in the symptomatic group than in the asymptomatic group (p = 0.002. CONCLUSIONS: The prevalence of major depressive episodes in women with HIV infection is high, and women with AIDS-related symptoms are more often depressed than are those who have never presented such symptoms.OBJETIVO: Devido ao aumento do número de mulheres infectadas pelo HIV, no Brasil e no mundo, torna-se necessária a realização de estudos que abordem os aspectos psiquiátricos dessa população. Esse estudo tem como objetivo avaliar a prevalência de depressão maior atual e outros transtornos depressivos em mulheres infectadas pelo HIV e comparar essa prevalência entre um grupo de pacientes sintomáticas e outro de assintomáticas. MÉTODO:Utilizou-se um desenho de estudo transversal que avaliou 120 mulheres portadoras do HIV divididas em dois grupos de 60 pacientes, de acordo com a presença, em algum momento da vida, de sintomas relacionados à AIDS (sintomáticas e assintomáticas. Foram avaliadas variáveis sociodemográficas e variáveis relacionadas aos transtornos depressivos. Foram utilizados na avaliação psiquiátrica dos transtornos depressivos o SCID-DSM-IV, escala de Hamilton-17, escala de Hamilton não somática e o inventário de

  20. Streptococcal toxic shock syndrome caused by Streptococcus suis serotype 2.

    Directory of Open Access Journals (Sweden)

    Jiaqi Tang

    2006-05-01

    Full Text Available BACKGROUND: Streptococcus suis serotype 2 (S. suis 2, SS2 is a major zoonotic pathogen that causes only sporadic cases of meningitis and sepsis in humans. Most if not all cases of Streptococcal toxic shock syndrome (STSS that have been well-documented to date were associated with the non-SS2 group A streptococcus (GAS. However, a recent large-scale outbreak of SS2 in Sichuan Province, China, appeared to be caused by more invasive deep-tissue infection with STSS, characterized by acute high fever, vascular collapse, hypotension, shock, and multiple organ failure. METHODS AND FINDINGS: We investigated this outbreak of SS2 infections in both human and pigs, which took place from July to August, 2005, through clinical observation and laboratory experiments. Clinical and pathological characterization of the human patients revealed the hallmarks of typical STSS, which to date had only been associated with GAS infection. Retrospectively, we found that this outbreak was very similar to an earlier outbreak in Jiangsu Province, China, in 1998. We isolated and analyzed 37 bacterial strains from human specimens and eight from pig specimens of the recent outbreak, as well as three human isolates and two pig isolates from the 1998 outbreak we had kept in our laboratory. The bacterial isolates were examined using light microscopy observation, pig infection experiments, multiplex-PCR assay, as well as restriction fragment length polymorphisms (RFLP and multiple sequence alignment analyses. Multiple lines of evidence confirmed that highly virulent strains of SS2 were the causative agents of both outbreaks. CONCLUSIONS: We report, to our knowledge for the first time, two outbreaks of STSS caused by SS2, a non-GAS streptococcus. The 2005 outbreak was associated with 38 deaths out of 204 documented human cases; the 1998 outbreak with 14 deaths out of 25 reported human cases. Most of the fatal cases were characterized by STSS; some of them by meningitis or severe