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Sample records for testicular da enzima

  1. Impacto do polimorfismo genetico da enzima conversora da angiotensina no remodelamento cardiaco

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    Felipe Neves de Albuquerque

    2014-01-01

    Full Text Available Fundamento: O papel dos polimorfismos genéticos da enzima de conversão da angiotensina na insuficiência cardíaca, como preditor de desfechos ecocardiográficos, ainda não está estabelecido. é necessário identificar o perfil local para observar o impacto desses genótipos na população brasileira, sendo inédito o estudo da insuficiência cardíaca de etiologia exclusivamente não isquêmica em seguimento mais longo que 5 anos. Objetivo: Determinar a distribuição das variantes do polimorfismo genético da enzima de conversão da angiotensina e sua relação com a evolução ecocardiográfica de pacientes com insuficiência cardíaca de etiologia não isquêmica. Métodos: Análise secundária de prontuários de 111 pacientes e identificação das variantes do polimorfismo genético da enzima de conversão da angiotensina, classificadas como DD (Deleção/Deleção, DI (Deleção/Inserção ou II (Inserção/Inserção. Resultados: As médias da coorte foram: seguimento de 64,9 meses, idade de 59,5 anos, 60,4% eram homens, 51,4% eram brancos, 98,2% faziam uso de betabloqueadores e 89,2% de inibidores da enzima de conversão da angiotensina ou de bloqueador do receptor da angiotensina. A distribuição do polimorfismo genético da enzima de conversão da angiotensina foi: 51,4% de DD; 44,1% de DI; e 4,5% de II. Não se observou nenhuma diferença das características clínicas ou de tratamento entre os grupos. O diâmetro sistólico do ventrículo esquerdo final foi a única variável ecocardiográfica isolada significativamente diferente entre os polimorfismos genéticos da enzima de conversão da angiotensina: 59,2 ± 1,8 para DD versus 52,3 ± 1,9 para DI versus 59,2 ± 5,2 para II (p = 0,029. No seguimento ecocardiográfico, todas as variáveis (diferença entre a fração de ejeção do ventrículo esquerdo da última e da primeira consulta; diferença entre o diâmetro sistólico do ventrículo esquerdo da última e da primeira

  2. A regeneração hepática e os inibidores da enzima conversora da angiotensina

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    Fernando Silva Ramalho

    2000-01-01

    Full Text Available No presente estudo, o autor aborda conceitos fundamentais acerca do fenômeno regenerativo hepático, seguido de alguns aspectos importantes relacionados ao sistema calicreína-cininas. A associação entre os inibidores da enzima conversora da angiotensina, a bradicinina e a regeneração hepática é discutida à luz de estudos recentes, que revelam um papel estimulante das cininas sobre a proliferação hepatocelular. Os inibidores da enzima conversora da angiotensina, extremamente utilizados no tratamento clínico da hipertensão arterial sistêmica, da insuficiência cardíaca congestiva e da nefropatia diabética, também são capazes de favorecer a regeneração hepática.

  3. Modelagem molecular e estudos de docking da enzima corismato sintase de Mycobacterium tuberculosis

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    Claudia Lemelle Fernandes

    2006-01-01

    As enzimas da via do ácido chiquímico constituem um excelente alvo para o desenho de novos agentes antibacterianos. Esta rota é encontrada em bactérias, fungos, plantas e parasitas do filo apicomplexa, mas está ausente em mamíferos. A Corismato sintase (CS) catalisa o último passo desta rota, produto que é utilizado em outras reações biossintéticas, como biossíntese de aminoácidos aromáticos, folato, vitamina K e ubiquinona. Esta reação é a mais incomum de toda rota e é unica na natureza. Ela...

  4. Inibição da atividade das enzimas 5-alfa redutase e aromatase na prostata do gerbilo da Mongolia

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    Lara Silvia Corradi

    2008-01-01

    Resumo: Os andrógenos têm papel central na biologia da próstata, mas os estrógenos também podem afetar o crescimento e a diferenciação desta glândula. Em tecidos específicos do corpo, a proporção entre andrógenos e estrógenos pode diferir significativamente daquela encontrada no plasma sanguíneo. As concentrações intracelulares desses esteróides nos tecidos alvos são reguladas pelo metabolismo local de hormônios, altamente dependente de enzimas específicas metabolizadoras de esteróides, como ...

  5. Papel da enzima 5-lipoxigenase na patogênese da artrite séptica experimental

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    Daiane Boff

    2013-01-01

    A artrite séptica é uma patologia articular classificada como infecciosa, pois para sua ocorrência é necessário que um microrganismo seja capaz de adentrar a articulação causando a infecção. O Staphylococcus aureus é a principal bactéria causadora da artrite séptica, sendo responsável por cerca de 40-60% dos casos. Vários tipos celulares participam da resposta imunológica ao S. aureus na articulação, principalmente os neutrófilos devido ao seu arsenal de combate a este patógeno. Leucotrienos ...

  6. Docking molecular de derivados de 2-fenilindano-1,3-dionas inibidores da enzima HMG-CoA

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    R. Q. Pordeus

    2014-11-01

    Full Text Available As doenças cardiovasculares constituem uma das principais causas de mortes em todo o mundo. Estudos mostram que a enzima HMG-CoA é considerada uma precursora da via metabólica hipolipidêmica no soro sanguíneo. Na busca por uma nova classe de compostos aptos a inibir esta enzima e consequentemente reduzir os níveis de colesterol, as 2-fenilindano-1,3-dionas apresentam resultados promissores. Uma das maneiras de avaliar o poder farmacológico destes compostos e predizer análogos ainda mais potentes consiste na avaliação da interação entre fármaco (2-fenilindano-1,3-diona e enzima (HMG-CoA, em que se utiliza da técnica de modelagem molecular docking. Neste estudo, o procedimento computacional para obtenção dos resultados de docking foi feito através do software AutoDock 1.5.6. Para avaliar a interação no sítio ativo da HMG-CoA, utilizamos, dentre a série de congêneres, o composto 2-(2-clorofenilindano-1,3-diona. De acordo com os resultados obtidos, foi identificada uma interação hidrofílica importante, do tipo ligação de hidrogênio C=O∙∙∙H–N, a qual apresenta uma distância de 1.62 Å entre os grupos carbonila do anel diona e o aminoácido metionina da HMG-CoA. Outra ligação de hidrogênio p∙∙∙H–N com distância de 3.10 Å formada entre o anel aromático do grupo indano-1,3-diona e o aminoácido glicina também foi identificada.

  7. Efeito tóxico dos praguicidas maneb e paraquat sobre a atividade da enzima antioxidante catalase em ratos

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    M. D. Arbo

    2009-01-01

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    Os radicais livres estão envolvidos em um grande número de enfermidades do ser humano. O cérebro tem níveis baixos de enzimas antioxidantes e um conteúdo lípidico elevado, tornando-se muito susceptível ao ataque de espécies reativas de oxigênio. Neste trabalho avaliou- se a lipoperoxidação em hipocampo e a atividade da enzima catalase em estriado e hipocampo de ratos tratados com o fungicida maneb (30 mg/kg e o herbicida paraquat (10 mg/kg. Não houve alteração na lipoperoxidação nem na atividade enzimática no hipocampo dos animais tratados com ambos os praguicidas, porém foi observada uma inibição da catalase no estriado dos ratos tratados com maneb e com paraquat. Com estes resultados pode-se sugerir, de forma preliminar, uma ação tóxica maior sobre centros dopaminérgicos. Estudos sobre a toxicidade destes compostos são essenciais na compreensão do papel destes praguicidas e dos radicais livres na etiologia das doenças. Palavras-chave: catalase; paraquat; maneb; estriado; hipocampo; radicais livres.

  8. Determinação da energia metabolizável do farelo residual do milho com e sem enzima em dietas para frangos de corte

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    C.G. Valadares

    2016-06-01

    Full Text Available RESUMO O objetivo deste trabalho foi avaliar o valor nutricional e determinar a energia metabolizável do farelo residual de milho (FRM sem e com o uso da enzima alfa- amilase. Foi realizado um experimento de metabolismo com 180 pintos machos Cobb com 14 dias, distribuídos em um delineamento inteiramente ao acaso, com seis tratamentos, cinco repetições e seis aves por parcela. As dietas experimentais foram: T1: ração referência (RR, T2: 60% T1 + 40% de FRM, T3: RR + enzima, T4: 60% T1 + 40% de FRM com adição de enzima, T5: RR com substituição de 100% do milho pelo FRM e T6: RR com substituição de 100% do milho pelo FRM com adição de enzima. A composição química do FRM foi: 88,33% de matéria seca (MS, 10,23% de proteína bruta (PB, 15,44% de extrato etéreo (EE, 4,33% de cinzas (CZ e 4555kcal/kg de energia bruta (EB. Os valores dos coeficientes de metabolizabilidade aparente para o FRM sem e com adição de enzima foram, respectivamente, de 73,37% e 76,33% para MS (p=0,0136, 70,44% e 70,39% para PB (p=0,9595 e de 74,79% e 76,77% para EB (p=0,0128. Os valores da energia metabolizável aparente (EMA e da EMA corrigida para retenção de nitrogênio (EMAn para o FRM (na base natural foram de 3322±19 e 3241±18kcal/kg e de 3334±16 e 3261±17kcal/kg, respectivamente, sem e com adição de enzima. A adição da enzima não teve efeito estatístico significativo sobre os valores de EMA e EMAn, entretanto houve efeito positivo no coeficiente de metabolização da energia.

  9. Expressão da enzima indoleamina-2,3-dioxigenase em truta arco-íris (Oncorhynchus mykiss

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    Fernanda Cardoso

    2015-10-01

    Full Text Available Resumo: A indoleamina 2,3-dioxigenase (IDO é uma enzima que cataboliza o aminoácido triptofano, levando à inibição da proliferação de linfócitos T, seja pela exaustão desse aminoácido no ambiente, ou pela indução via catabólitos induzindo-os a apoptose. Em mamíferos, esta enzima atua em diversas condições do organismo como a gestação, infecções, inflamações crônicas, transplantes e tumores, atuando na regulação imunológica. Estudos recentes identificaram a presença de moléculas homólogas a IDO em espécies filogeneticamente inferiores, cuja função parece estar restrita ao metabolismo do triptofano como fonte de energia. Este estudo teve por objetivo averiguar a expressão da IDO em células sanguíneas e órgãos hematopoiéticos de truta arco-íris pela imuno-histoquímica, buscando evidências de que a mesma poderia, nesta espécie, estar relacionada ao sistema imune. A expressão de IDO foi observada nos órgãos hematopoiéticos estudados incluindo o rim cefálico que apresentou marcação em células interrenais e leucócitos; baço, na qual a marcação restringiu à alguns leucócitos; no fígado a marcação ficou limitada à apenas algumas células dentro dos vasos sanguíneos e nas extensões sanguíneas pode-se visualizar a marcação de alguns leucócitos como os monócitos, linfócitos e neutrófilos. A predominância da marcação da IDO nesses tecidos pode constituir uma evidência de que a IDO identificada na O. mykiss esteja relacionada ao sistema imunológico nessa espécie.

  10. Estudo cinético da obtenção de ésteres utilizando enzima lipozyme TL IM como catalisador

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    Everton Skoronski

    2010-12-01

    Full Text Available Nesse trabalho foi estudada a produção do éster alifático octanoato de n-pentila por esterificação direta usando a enzima Lipozyme TL IM como catalisador, sendo esse éster usado como aroma na indústria de alimentos. Foi verificada a influência da concentração inicial de substratos na velocidade inicial da reação, sendo esta determinada através do consumo de ácido octanoico ao longo do tempo. Modelos cinéticos clássicos descritos na literatura não se ajustaram bem aos dados experimentais. A máxima velocidade da reação foi alcançada a 40 ºC. A enzima Lipozyme TL IM sofre inibição por substrato

  11. Clonagem e purificação da enzima bifuncional corismato sintase de Mycobacterium tuberculosis e caracterização cinética de sua atividade NADH:FMN-oxidorredutase

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    Fernanda Ely

    2006-01-01

    O aumento da incidência de cepas de Mycobacterium tuberculosis resistente a múltiplas drogas tornou urgente a necessidade de novos agentes terapêuticos para o tratamento da tuberculose. A via do ácido chiquímico é essencial para a sobrevivência deste organismo, o que torna suas enzimas interessantes alvos para o desenvolvimento de novos medicamentos. A enzima corismato sintase (MtCS) foi identificada no genoma de M. tuberculosis por homologia de seqüência. Esta enzima catalisa a síntese NADH-...

  12. Efeito da retirada das drogas inibidoras da enzima conversora da angiotensina sobre a função renal em pacientes com diabete melito tipo 2 com e sem nefropatia diabética

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    Alice Hoefel Nunes

    2009-01-01

    A Nefropatia Diabética (ND) é a principal causa de doença renal terminal e parece resultar de uma interação entre suscetibilidade genética e fatores ambientais. Tanto no desenvolvimento como na progressão da ND, tem sido evidente o papel do sistema renina-angiotensina-aldosterona (SRAA). A renina age sobre o angiotensinogênio para formar a angiotensina I, que sofre transformação em angiotensina II através da ação da enzima conversora da angiotensina. A angiotensina II é um potente hormônio tr...

  13. Degradação ruminal da silagem de milho e da palha de arroz utilizando enzimas fibrolíticas exógenas = Ruminal degradation of corn silage and rice straw using exogenous fibrolityc enzymes

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    Adriana de Souza Martins; Paulo de Figueiredo Vieira; Telma Teresinha Berchielli; Ivanor Nunes do Prado

    2008-01-01

    Estudou-se o efeito da adição de enzimas fibrolíticas (celulase e xilanase) sobre a degradabilidade in situ da matéria seca (MS), proteína bruta (PB), fibra em detergente neutro (FDN), fibra em detergente ácido (FDA) e hemicelulose da silagem de milho (SM)e da palha de arroz (PA), utilizando seis bovinos fistulados no rúmen. Também foi avaliada a proporção de nitrogênio (N) insolúvel em detergente ácido em relação ao N total (NIDA/N total). As enzimas fibrolíticas foram extraídas dos fungos A...

  14. Silício como potencializador da atividade de enzimas de defesa à ferrugem em plantas de café e soja

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    Pereira, Sandra Cerqueira

    2007-01-01

    A ferrugem (Hemileia vastatrix) e a ferrugem asiática (Phakopsora pachyrhizi) têm reduzido significativamente a produtividade, respectivamente, das culturas do café e da soja. O silício (Si) é considerado um elemento benéfico às plantas, pois aumenta a resistência delas às doenças e ao ataque de pragas. Em resposta a infecção por patógenos, as plantas ativam diferentes mecanismos de defesa entre eles o aumento na atividade de enzimas como as β-1,3-glucanases (GLU) e as quitinases (QUI...

  15. Efeito da aplicação de enzimas pectinolíticas no rendimento da extração de polpa de cupuaçu

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    BASTOS MARIA DO SOCORRO ROCHA

    2002-01-01

    Full Text Available O Brasil apresenta uma diversidade de frutas regionais, principalmente nas regiões Norte e Nordeste. Dentre estas, destaca-se o cupuaçu, que é uma fruta considerada exótica e de grande potencial comercial nos mercados dos estados do Sudeste do Brasil e dos países europeus. A polpa e a semente são importantes para o desenvolvimento de produtos industriais. A polpa tem sido estudada como matéria-prima para néctar; entretanto, é usada em sorvetes, geléias, purês e polpa enlatada. Atualmente, o processo de extração da polpa ainda é feito de maneira empírica, utilizando-se de acessórios como facas, colheres ou tesouras de uso doméstico, devido à forte aderência da mesma ao caroço, causando baixo rendimento no produto final. Com o objetivo de aumentar o rendimento durante o processo de extração da polpa de cupuaçu, adicionaram-se à polpa bruta dois tipos de preparações enzimáticas de ação pectolítica (Citrozym-L e Rohament PL. As concentrações estabelecidas foram de 100; 300; 500 e 750 ppm. Após todo o processo, obteve-se a polpa, e o rendimento foi comparado com a polpa-controle. O experimento foi realizado nos laboratórios de Tecnologia de Alimentos da Embrapa Agroindústria Tropical. Pelos resultados obtidos, observou-se que o rendimento da polpa com adição de Citrozym-L foi superior a 60% nas concentrações de 300; 500 e 750 ppm, enquanto, com a utilização de Rohament-PL, o rendimento variou de 43 a 57% nas mesmas concentrações. O rendimento da polpa-controle foi de 44 e 41 %, para os experimentos realizados com a primeira e segunda preparação enzimática, respectivamente. Conclui-se que a utilização de enzimas é uma alternativa para melhorar o processo de extração da polpa; adicionando-se acima de 300ppm, obtém-se um rendimento próximo a 60%.

  16. Hydrolysis of lactose by β-galactosidase from Kluyveromyces fragilis: characterization of the enzyme Hidrólise da lactose pela β-galactosidase de Kluyveromyces fragilis: caracterização da enzima

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    Graciette Matioli

    2002-03-01

    Full Text Available The β-galactosidase enzyme from Kluyveromyces fragilis was characterized in the soluble form using lactose 5% w/v found in skimmed powdered milk as substrate. Enzyme diluted 50 times hydrolyzed the lactose in batch reactor of 50 mL capacity. Enzyme activity and its activation energy were determined as a function of temperature and pH. Temperature ranged from 20 to 55ºC and pH from 5.5 to 8.0. Activation energy was 9.50 kcal/mol. The energy of deactivation was 33.74 kcal/mol. Although the enzyme presented a high specific activity at 45ºC and pH 6.5 (3.312 U/mg protein, values indicate that the best use of the enzymatic activity occur at 40ºC or below, with half-life higher than 12 hours. The activation energy increased proportionally to pH increase. Therefore, the activation energy depends on pH and varies according to the origin of the enzyme.A enzima β-galactosidase de Kluyveromyces fragilis foi caracterizada na forma solúvel, utilizando como substrato, lactose 5% p/v presente no leite em pó desengordurado. A enzima, diluída 50 vezes, hidrolisou a lactose em reator batelada de 50 ml de capacidade. A atividade da enzima e sua energia de ativação foram determinadas em função da temperatura e pH. A faixa de temperatura analisada foi de 20 a 55ºC e de pH de 5,5 a 8,0. A energia de ativação foi de 9,50 kcal/mol. A energia de desativação foi de 33,74 kcal/mol. Embora a enzima tenha apresentado uma atividade específica alta a 45ºC e pH 6,5 (3,312 U/mg proteína, os valores obtidos indicam que o melhor aproveitamento da atividade enzimática se dá a 40ºC ou abaixo, com um tempo de meia-vida superior a 12 horas. A energia de ativação aumentou proporcionalmente com o aumento de pH. Portanto, a energia de ativação depende diretamente do pH da solução e varia com a origem da enzima.

  17. OBTENÇÃO E UTILIZAÇÃO DA ENZIMA POLIFENOLOXIDASE EXTRAÍDA DE POLPA DE PINHA (Annona squamosa L. MADURA NO MELHORAMENTO DO SABOR DO CACAU (Theobroma cacao L.

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    LIMA ELIZA DOROTEA POZZOBON DE ALBUQUERQUE

    2001-01-01

    Full Text Available O presente trabalho teve como objetivo estudar a obtenção e a utilização da enzima polifenoloxidase (PPO extraída de polpa de pinha madura na redução do teor de compostos polifenólicos com a finalidade de diminuir a adstringência e o amargor das amêndoas de cacau processadas na forma de "nibs". A PPO foi extraída com tampão fosfato de potássio 0,025M (pH 7,5, adicionando sulfato de amônio para a precipitação da enzima. O material em pó obtido foi denominado de enzima parcialmente purificada, sendo que a análise de atividade enzimática foi realizada, utilizando-se de catecol como substrato. As características bioquímicas apresentadas foram pH de estabilidade de 6,0 a 6,5 e temperatura de estabilidade de 10 a 30°C. Os "nibs" foram autoclavados (121°C por 15 minutos e não autoclavados de amêndoas cruas insuficientemente fermentadas e secas, da mesma origem, sendo embebidas em 25 mL de uma solução da enzima contendo 200 unidades/min/mL, durante 30; 60; 90; 210 e 360 minutos, a 23°C e pH 6,0. Os "nibs" foram homogeneizados com a solução de enzima a cada 15 minutos, secos, moídos e desengordurados. Após o tratamento enzimático durante 210 minutos realizado nos "nibs" de cacau desengordurado não autoclavados foi possível observar diminuição de 15% nas concentrações de fenóis totais, 15% de taninos, 10% de flavan-3-ois e 18% de antocianidinas. Os "nibs" de cacau desengordurado autoclavados apresentaram diminuição de 25% nas concentrações de fenóis totais, 26% de taninos, 23% de flavan-3-ois e 51% de antocianidinas.

  18. Ultrassonografia testicular em bovinos jovens da raça Nelore criados em sistema extensivo

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    D.J. Cardilli

    2012-02-01

    Full Text Available Este estudo visou avaliar o padrão ultrassonográfico do parênquima testicular de touros jovens da raça Nelore, desde a fase peripuberal até a puberdade, estabelecer padrões fisiológicos e também verificar se existe diferença de ecogenicidade entre animais púberes e pré-púberes na mesma idade. Foram realizados exames ecográficos dos testículos de 19 bovinos aos 10, 12, 14, 16 e 18 meses de idade. O padrão ultrassonográfico do parênquima testicular mostrou-se homogêneo e com ecogenicidade moderada. A ecogenicidade testicular aumentou em proporção direta com a idade dos animais. Não houve diferença significativa entre a ecogenicidade testicular de animais púberes e pré-púberes na mesma idade.

  19. Caracterização de fungos isolados da região Amazônica quanto ao potencial para produção das enzimas envolvidas na conversão da biomassa vegetal

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    Rosangela Donizete Perpetua Buzon Pirota

    2015-09-01

    Full Text Available A conversão da biomassa vegetal proveniente de resíduos agroindustriais e florestais em biocombustíveis e bioprodutos, dentro do conceito de biorrefinarias, é de grande interesse, principalmente para o Brasil, onde a agroenergia possui um enorme potencial de desenvolvimento. Entretanto, para garantir a viabilidade do processo de conversão, é fundamental reduzir o custo das enzimas utilizadas na etapa de hidrólise. Para isso, deve-se dispor da peça chave deste processo, que é o microrganismo. Nesse contexto, o objetivo deste trabalho foi avaliar fungos isolados da região Amazônica em relação ao potencial de produção das enzimas celulases e xilanases. De um total de 40 isolados cultivados por fermentação em estado sólido (FES, durante 10 dias, os fungos que se destacaram quanto à produção de endoglucanase (351,79Ug-1 em 120h e β-glicosidase (62,31Ug-1em 72h foi o P47C3 (A. niger, e na produção de xilanase (1076,94Ug-1 em 72h e FPase (2,46Ug-1 em 120h foram o P6B2 (A. oryzae e o P40B3, respectivamente. Os resultados obtidos demonstram o enorme potencial de aplicação das enzimas produzidas pelos fungos isolados da Amazônia, contribuindo, assim, para gerar os avanços tecnológicos necessários para o aumento da eficiência do uso da biomassa vegetal como fonte de energia renovável

  20. Degradação ruminal da silagem de milho e da palha de arroz utilizando enzimas fibrolíticas exógenas = Ruminal degradation of corn silage and rice straw using exogenous fibrolityc enzymes

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    Adriana de Souza Martins

    2008-10-01

    Full Text Available Estudou-se o efeito da adição de enzimas fibrolíticas (celulase e xilanase sobre a degradabilidade in situ da matéria seca (MS, proteína bruta (PB, fibra em detergente neutro (FDN, fibra em detergente ácido (FDA e hemicelulose da silagem de milho (SMe da palha de arroz (PA, utilizando seis bovinos fistulados no rúmen. Também foi avaliada a proporção de nitrogênio (N insolúvel em detergente ácido em relação ao N total (NIDA/N total. As enzimas fibrolíticas foram extraídas dos fungos Aspergillus niger eTrichoderma longibrachiatum, sendo fornecido 0,75 g kg-1 de MS animal-1 dia-1, via cânula ruminal. Os tempos de incubação foram: 0, 3, 6, 12, 24, 48, 72 e 96 h. Os resíduos de incubação foram comparados por meio da microscopia eletrônica de varredura (MEV. Afração solúvel da MS e da PB da silagem de milho aumentou com a adição de enzimas fibrolíticas. Não houve efeito das enzimas sobre a degradação da parede celular dos volumosos. A adição de enzimas não alterou o teor de NIDA/N total da silagem de milho, porém aumentou esta proporção nos resíduos da palha de arroz incubados durante 12 e 48 h. As observações ao MEV indicaram aumento da colonização bacteriana sobre a parede celular dos volumosos, mas sem efeito sobre a degradação ruminal.This study evaluated the effect of fibrolytic enzyme addition(cellulase and xylanase on the dry matter (DM, crude protein (CP, neutral detergent fiber (NDF, acid detergent fiber (ADF and hemicellulose in situ degradability of corn silage (CS and rice straw (RS, using six cattle cannulated on the rumen. Acid detergentinsoluble nitrogen (ADIN/total N was evaluated. The fibrolytic enzymes were extracted from Aspergillus niger and Trichoderma longibrachiatum fungi, supplied at 0.75 g kg-1 of DM animal-1 day-1, through ruminal cannula. The incubation times were 0, 3, 6, 12, 24, 48, 72 and 96 hours. The incubation residues were compared by scanning electron micrograph (SEM

  1. Enzimas no testículo de ratos em algumas condições experimentais

    Directory of Open Access Journals (Sweden)

    Helion Póvoa Junior

    1980-01-01

    Full Text Available Dosou-se a atividade da GOT, GPT e ceruloplasmina no testículo de ratos normais (a atividade testicular destas enzimas é relativamente baixa e injetados com cloreto de cádmio ( que lesa o testículo, assim como em animais com este órgão lesado e que se administrou testosterona, estradiol, progesterona e gonadotrofina coriônica. Pudemos observar alterações significativas das enzimas por ação destes diferentes hormônios. Infelizmente, como pouco se sabe sobre a função destas enzimas neste órgão, torna-se difícil interpretar os nossos achados.GOT, GPT and ceruloplasmin activities have been determined in testicle of normal rats. Low activities were found for every enzyme. In animals injected with cadmium chloride, there were significant alterations in enzyme activities. Accentuated alterations in enzyme activities were also found in animals with destroyed testicles after injection of several hormones (testosterone, estradiol, progesterone and chorionic gonadotrophin.

  2. Análise Fitoquímica e Estudo das Atividades Antimicrobiana, Antioxidante e de Inibição da Enzima Acetilcolinesterase das espécies Zanthoxylum rhoifolium e Zanthoxylum hyemale.

    OpenAIRE

    Graciane Zanon

    2010-01-01

    O presente estudo foi proposto para avaliar a atividade biológica da casca do caule de Zanthoxylum rhoifolium e Zanthoxylum hyemale. O extrato metanólico neutro e as frações deste extrato, as frações básicas obtidas após extração ácido-base do extrato metanólico e os compostos puros isolados dessas frações, foram avaliados in vitro quanto a atividade antimicrobiana, potencial antioxidante e inibição da enzima acetilcolinesterase. Da fração diclorometânica de Zanthoxylum rhoifolium foram...

  3. Resolução de alcoois secundarios racemicos atraves da esterificação catalisada por enzimas imobilizadas em organo-gel

    OpenAIRE

    Jesus, Paulo Cesar de

    1994-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias Fisicas e Matematicas A habilidade de enzimas para atuar como catalisadores quirais já tem sido considerada por muitos anos, particularmente pela indústria farmacêutica. A resolução de misturas de álcoois racêmicos pode ser realizada utilizando as propriedades enantioseletivas de enzimas hidrolíticas. A crescente busca de uma metodologia cada vez mais aperfeiçoada para utilização de enzimas em síntese orgân...

  4. Analise da diversidade genetica de amostras de Candida albicans isoladas da cavidade bucal de crianças saudaveis por eletroforese de enzima multiloco

    OpenAIRE

    Marcelo Fabiano Gomes Boriollo

    2004-01-01

    Resumo: O interesse em adquirir um melhor entendimento sobre a patogênese, epidemiologia, genética e evolução, das infecções causadas por C. albicans, tem conduzido ao desenvolvimento de inúmeras pesquisas, as quais empregaram sistemas fingerprinting, tais como Eletroforese de Enzima Multiloco (MLEE), Cariotipagem Eletroforética (EK), DNA Polimórfico Amplificado ao Acaso (RAPD) e Polimorfismo no Comprimento do Fragmento de Restrição (RFLP) com e sem hibridação. A efetividade destes sistemas t...

  5. Análise da atividade da enzima conversora da angiotensina na hipertrofia aguda do ventrículo direito em modelo experimental de estenose endovascular ajustável do tronco pulmonar

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    RABELLO Renato Rocha

    2001-01-01

    Full Text Available INTRODUÇÃO: A bandagem do tronco pulmonar (TP tem sido aplicada para treinamento do ventrículo esquerdo (VE em pacientes portadores de transposição das grandes artérias (TGA com septo íntegro. Este procedimento, além de apresentar alta morbi-mortalidade, pode ocasionar alterações da função ventricular a longo prazo. Com o objetivo de analisar a hipertrofia aguda do ventrículo direito (VD, foi implantado um cateter balão no TP de seis cabritos jovens. MATERIAL E MÉTODOS: A sobrecarga sistólica foi aplicada através de insuflações progressivas do balão, durante 96 horas. Esta hipertrofia foi acompanhada por medidas hemodinâmicas diárias, através de cateteres implantados na aorta, VD e TP, além de ecocardiogramas seriados a cada 24 horas, com medidas das espessuras do septo interventricular e dos ventrículos. Ao final das 96 horas, os animais foram mortos para remoção dos corações. Os ventrículos e o septo foram pesados separadamente. Foram colhidas biópsias musculares de cada câmara para análise da atividade da enzima conversora da angiotensina (ECA. Oito cabritos (idade e peso semelhantes foram utilizados como controle para os pesos dos ventrículos e para a atividade da ECA. RESULTADOS: Observou-se um aumento do gradiente VD/TP (p=0,001, com conseqüente aumento da razão VD/VE (p=0,005 durante o tempo de sobrecarga sistólica. Ao fim do protocolo, a parede livre do VD apresentou aumento de espessura (p=0,002 e, conseqüentemente, um aumento do peso indexado (p=0,002. A análise da atividade da ECA revelou aumento somente no músculo do VD hipertrofiado (p=0,002. CONCLUSÃO: O cateter balão foi eficiente em induzir a hipertrofia aguda do VD através do protocolo utilizado. Conseqüentemente, um aumento expressivo da atividade da ECA está associado ao processo de hipertrofia miocárdica induzida por sobrecarga pressórica.

  6. Meta-análise da digestibilidade ileal de aminoácidos e minerais em suínos alimentados com dietas contendo enzimas

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    Cheila Roberta Lehnen

    2011-04-01

    Full Text Available O objetivo deste trabalho foi avaliar, por meio da meta-análise, o efeito da fitase e da xilanase sobre a digestibilidade ileal aparente (DIa de aminoácidos, cálcio e fósforo, em suínos em fase de crescimento. A base de dados consistiu de 21 artigos publicados entre 1998 e 2009, no total de 82 tratamentos e 644 suínos. A meta-análise foi realizada por análise gráfica, de correlação, de variância-covariância. As concentrações de fósforo fítico e as frações fibra em detergente neutro, fibra em detergente ácido e lignina em detergente ácido, nas dietas, apresentaram correlações baixas e negativas com a DIa do cálcio, fósforo e aminoácidos. A adição de fitase às dietas aumentou em 2% a DIa da arginina, em 14% a do cálcio e em 34% a do fósforo. A DIa da arginina, fenilalanina, isoleucina e lisina foi 3,3% superior em suínos alimentados com dietas com xilanase, em relação às dietas sem a enzima. O fósforo fítico e as fibras, nas dietas, reduzem a DIa do cálcio, do fósforo e dos aminoácidos essenciais. O uso de fitase e xilanase, nas dietas, melhora o aproveitamento de cálcio, fósforo e alguns aminoácidos. No entanto, o excesso de cálcio e fósforo nas dietas reduz a ação da fitase sobre a digestibilidade ileal dos nutrientes.

  7. Testicular Injuries

    Science.gov (United States)

    ... Sports 5 Ideas for Eco-Friendly Celebrations Testicular Injuries KidsHealth > For Teens > Testicular Injuries Print A A ... addressed as soon as possible. continue Serious Testicular Injuries Examples of serious testicular injury are testicular torsion ...

  8. Sucrose metabolizing enzymes in cell suspension cultures of Bauhinia forficata, Curcuma zedoaria and Phaseolus vulgaris Enzimas do metabolismo da sacarose em cultura celular de Bauhinia forficata, Curcuma zedoaria e Phaseolus vulgaris

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    Marcia Ometto de Mello

    2001-09-01

    Full Text Available The objective of this work was to study the activity of sucrose metabolizing enzymes in extracts of cell suspension cultures of Bauhinia forficata Link, Curcuma zedoaria Roscoe and Phaseolus vulgaris L. Invertase pathway was identified in the three studied species. Sucrose synthase pathway was also responsible for sucrose metabolism in Curcuma zedoaria and Phaseolus vulgaris cells. Activity values higher than 300 nmol min-1 mg-1 of protein were found for acid and neutral invertases, UDPglucose pyrophosphorylase and phosphoglucomutase in the cell extract of the three plant species. Sucrose synthase showed low activity in Bauhinia forficata cells. As sucrose concentration in the culture medium decreased, sucrose synthase activity increased in C. zedoaria and P. vulgaris cells. The glycolytic enzymes activity gradually reduced at the end of the culture period, when carbohydrate was limited.O objetivo deste trabalho foi estudar as enzimas do metabolismo da sacarose em culturas de célula em suspensão de Bauhinia forficata Link, Curcuma zedoaria Roscoe e Phaseolus vulgaris L. A via da invertase foi identificada nas três espécies estudadas. A via da sacarose sintase também foi responsável pelo metabolismo da sacarose em células de Curcuma zedoaria e Phaseolus vulgaris. Foram encontradas atividades maiores que 300 nmol min-1 mg-1 de proteína das enzimas invertase ácida e alcalina, UDPglicose pirofosforilase e fosfoglicomutase no extrato celular das três espécies de plantas. A sacarose sintase mostrou atividade baixa nas células de Bauhinia forficata. À medida que a concentração de sacarose no meio de cultura diminuiu, a atividade da sacarose sintase aumentou em células de Curcuma zedoaria e Phaseolus vulgaris. Ao final do período de cultura, quando os carboidratos se tornaram limitantes, as atividades das enzimas glicolíticas reduziram-se gradualmente.

  9. Influence of carbon source, pH, and temperature on the polygalacturonase activity of Kluyveromyces marxianus CCMB 322 Influência da fonte de carbono, pH e temperatura na atividade da enzima poligalacturonase de Kluyveromyces marxianus CCMB 322

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    Rodrigo de Queiroz Oliveira

    2012-09-01

    Full Text Available Microbial pectinolytic enzymes are known to play a commercially important role in a number of industrial processes. Two kinds of yeast can be discerned regarding the production of enzymes. One group includes those which can produce enzymes in the absence of an inducer, and the other group comprises the yeasts that produce enzymes in the presence of an inducer. The objective of this study was to investigate the influence of pectic substances, glucose, pH, and temperature on the polygalacturonase activity by Kluyveromyces marxianus CCMB 322. The yeast was grown in a fermentation broth containing different concentrations of glucose and pectic substances. The polygalacturonase activity was determined by the DNS method, and the pH and temperature were optimized using a central composite experimental design. The polygalacturonase secreted by K. marxianus CCMB 322 was partially constitutive showing optimum pH and temperature of 7.36 and 70 °C, respectively, and maintained approximately 93% of its original activity for 50 minutes at 50 °C. Thermal stability of the polygalacturonase enzyme was studied at different temperatures (50, 60, 70, and 80 °C and different incubation times (0, 10, 20, 30, 40, and 50 minutes. This study showed that glucose can influence the regulation of the synthesis of polygalacturonase.Enzimas pectinolíticas de origem microbiana são conhecidas por desempenhar um papel importante comercialmente em uma série de processos industriais. Dois tipos de levedura podem ser distinguidos para a produção dessas enzimas. Um grupo inclui aqueles que têm capacidade de produzi-las na ausência de um indutor e outro grupo compreende as leveduras que as produzem na presença de um indutor. O objetivo deste estudo foi investigar a influência de substâncias pécticas, de glicose, do pH e da temperatura na atividade da poligalacturonase de Kluyveromyces marxianus CCMB 322. O cultivo foi em caldo de fermentação contendo diferentes

  10. Enzimas hidrolíticas extracelulares de isolados de rizóbia nativos da Amazônia Central, Amazonas, Brasil Extracellular hydrolytic enzymes in indigenous strains of rhizobia in Central Amazonia, Amazonas, Brazil

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    Arlem Nascimento de Oliveira

    2006-12-01

    Full Text Available A associação rizóbia x leguminosa contribui para enriquecer o solo com nitrogênio por meio da fixação biológica. Entretanto, pouco se conhece a respeito do perfil enzimático desses microrganismos. Nesse contexto, a presente investigação propõe avaliar a produção de enzimas hidrolíticas extracelulares por isolados de rizóbia nativos da Amazônia Central. Essa triagem constitui o primeiro passo na seleção de microrganismos nativos que são potencialmente exploráveis como produtores de enzimas. Foram testados 67 isolados nativos de rizóbia para as atividades amilolítica, celulolítica, lactolítica, lipolítica, pectinolítica e proteolítica, em meio YMA modificado. A atividade ureolítica foi detectada em meio ágar-uréia. As bactérias isoladas dos nódulos de feijão caupi mostraram maior capacidade em produzir enzimas do que os isolados bacterianos de soja. De todas as enzimas hidrolíticas avaliadas, apenas a pectinase não foi detectada neste estudo. Amilase (32,8%, protease (28,4%, urease (20,9% e carboximetilcelulase (9,0% foram as enzimas mais freqüentes produzidas pelos isolados. Neste trabalho, apenas as enzimas amilase e protease variaram significativamente entre os isolados de rizóbia. Os isolados INPA R-926 e INPA R-915 exibiram os maiores índices amilolíticos (IE = 3,1 e proteolíticos (IE = 6,6, respectivamente. Este estudo revelou alguns isolados de rizóbia nativos da Amazônia Central como fontes promissoras de enzimas de importância industrial para uso biotecnológico.Legumes enrich the soil by contributing nitrogen through symbiotic biological nitrogen fixation by rhizobia bacteria. However, very little is known about the extracellular enzymatic profile of these microorganisms. In this context, the production of extracellular hydrolytic enzymes by indigenous strains of rhizobia in Central Amazonia was evaluated. This screening constitutes the first step in selecting indigenous microorganisms that are

  11. Aspectos morfológicos do ciclo testicular anual de codorna doméstica (Coturnix coturnix da variedade italiana

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    Antonio Marcos Orsi

    2005-06-01

    Full Text Available A estrutura histológica do epitélio tubular seminífero e os valores do índice gonadossomático de codorna doméstica da variedade italiana, analisados em todas as estações do ano, permitiram caracterizar que a espermatocitogênese nesta ave tem ritmo constante durante a primavera, a fase mais ativa do ciclo testicular anual, o qual, aparentemente, não cessa durante o inverno e o verão. Por outro lado, uma fase quiescente do ciclo observou-se nos períodos inicial e médio do outono, quando a espermiogênese não se completava, levando à não formação de espermatozóides. Os eventos morfológicos testiculares observados parecem se repetir anualmente, durante as estações, sendo bem típica a quiescência outonal, o que permitiu caracterizar na codorna um padrão testicular cíclico circanual, em termos do ritmo da cinética da espermatogênese.

  12. Relações da dieta ovo-lácteo-vegetariana com o exercício físico e as enzimas antioxidantes superóxido dismutase e catalase

    OpenAIRE

    Mírian Rocha Váquez; Ramon dos Santos EL-Bachá; Carine de Oliveira Souza; Tatiana Luzia Borges Machado; Ricardo Sereno Silva; José Gerardo Villa Vicente; Luiz Erlon Araújo Rodrigues

    2011-01-01

    OBJETIVO: O objetivo deste trabalho foi estudar a influência da dieta ovo-lácteo-vegetariana e do exercício físico extenuante sobre as atividades das enzimas catalase e superóxido dismutase em dez indivíduos masculinos, jovens e saudáveis. MÉTODOS: O controle alimentar aplicou-se por quatro meses. Antes disso, foram recolhidas amostras de sangue em estado basal e cinco minutos após o exercício físico extenuante efetuado em esteira rolante. O mesmo procedimento foi aplicado após o controle ali...

  13. Degradação ruminal da silagem de milho e da palha de arroz utilizando enzimas fibrolíticas exógenas - DOI: 10.4025/actascianimsci.v30i4.6462 Ruminal degradation of corn silage and rice straw using exogenous fibrolityc enzymes - DOI: 10.4025/actascianimsci.v30i4.6462

    OpenAIRE

    Telma Teresinha Berchielli; Paulo de Figueiredo Vieira; Adriana de Souza Martins; Ivanor Nunes do Prado

    2009-01-01

    Estudou-se o efeito da adição de enzimas fibrolíticas (celulase e xilanase) sobre a degradabilidade in situ da matéria seca (MS), proteína bruta (PB), fibra em detergente neutro (FDN), fibra em detergente ácido (FDA) e hemicelulose da silagem de milho (SM) e da palha de arroz (PA), utilizando seis bovinos fistulados no rúmen. Também foi avaliada a proporção de nitrogênio (N) insolúvel em detergente ácido em relação ao N total (NIDA/N total). As enzimas fibrolíticas foram extraídas dos fungos ...

  14. Perfil bioquímico de algumas enzimas no plasma sangüíneo de potras da raça Brasileiro de Hipismo (BH criadas em Colina, Estado de São Paulo

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    Fernando José Benesi

    2009-08-01

    Full Text Available Com o propósito de avaliar o perfil bioquímico de algumas enzimas, em potras sadias da raça BH (Brasileiro de Hipismo, utilizaram-se 380 amostras de plasma sangüíneo colhidas de 19 animais desde o nascimento até 24 meses de vida. Na análise dos resultados evidenciou-se que os valores médios das enzimas FA (fosfatase alcalina e CK (creatina quinase foram máximos entre o nascimento e 24 horas de vida (FA-1995.50 UI/ ; CK-189.13UI/L, enquanto que para a LD (lactato desidrogenase e GGT (gama glutamiltransferase as maiores magnitudes ocorreram, respectivamente, entre 3 e 4 dias (LD-479.11UI/L e aos 10 dias de idade (GGT-18.70UI/L. As FA, CK, LD e GGT, mostraram diminuições dos valores médios, respectivamente, até 6 meses (FA-323.50UI/L, 20 dias (CK-51UI/ L, 19 meses (LD-214.00UI/L e 4 meses (GGT-11.40UI/L estabilizando-se a seguir, com pequenas variações. A atividade da AST (aspartato aminotransferase que foi mínima logo após o nascimento (AST- 43.38UI/L, aumentou até os sete dias de vida (AST-110.89UI/L, e a seguir diminuiu progressivamente, com pequenas oscilações, até o final do estudo. Todas as enzimas avaliadas sofreram variações influenciadas pelo fator etário, particularmente no período inicial de vida dos animais estudados.

  15. Resistência de amendoim-bravo aos herbicidas inibidores da enzima acetolactato sintase Wild poinsettia resistance to acetolactate synthase inhibitor herbicides

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    Ribas A. Vidal

    1999-12-01

    Full Text Available O controle contínuo de plantas daninhas através da aplicação de herbicidas que apresentam atividade em um único local de ação nas plantas favorece a seleção de biótipos resistentes a estes herbicidas, em certas espécies vegetais. Quatro experimentos foram conduzidos em condições casa-de-vegetação, na Faculdade de Agronomia da Universidade Federal do Rio Grande do Sul, com os objetivos de avaliar a ocorrência de resistência aos herbicidas inibidores da enzima acetolactato sintase (ALS em vários biótipos de leiteiro ou amendoim-bravo (Euphorbia heterophylla EPHHL e avaliar a ocorrência de resistência múltipla a herbicidas com atividade em outros locais de ação. Biótipo oriundo de Passo Fundo foi resistente ao imazethapyr, enquanto biótipo oriundo de Porto Alegre foi suscetível. O biótipo de Passo Fundo apresentou resistência cruzada aos herbicidas imidazolinonas: imazapyr, imazaquin e imazethapyr; sulfoniluréias: chlorimuron, nicosulfuron e metsulfuron; e sulfonanilida: flumetsulan. Este biótipo não foi resistente aos herbicidas com os seguintes mecanismos de ação: inibidores de EPSPs, mimetizadores de auxina, inibidores dos fotossistemas I e II e inibidores de PROTOX. A confirmação de resistência aos inibidores de ALS em biótipos oriundos de Nãome-Toque, Passo Fundo e Rio Pardo sugere ampla dispersão no Rio Grande do Sul de resistência de E. heterophylla aos herbicidas deste mecanismo de ação.The continuous weed control with herbicides of only one site of action selects biotypes resistant to these herbicides. Four experiments were conducted in greenhouse of UFRGS, Brazil, to confirm the occurence of wild poinsettia (Euphorbia heterophylla biotypes resistance to herbicides inhibitors of acetholactate synthase (ALS, and to determine whether there was cross resistance to herbicides with other site of action. A biotype from Passo Fundo -RS was resistant to imazethapyr, whereas a biotype from Porto Alegre -RS

  16. Testicular histology after intestinal pedicle flap (cecum apposition in rats Histologia testicular depois da aposição de um retalho intestinal (ceco em ratos

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    Saulo Rodrigues Júnior

    2010-06-01

    Full Text Available PURPOSE: Histological study of vascularization between a cecal pedicle flap and the testicle of Wistar rats. METHODS: Fifty-three rats were studied. G1: submitted to celiotomy (a, mobilization of the right testicle (RT to the abdomen (b, cecal flap suture to the RT (d and cavity closure. G1: procedures a, b and d and fixation of RT into abdomen. G3: procedures a, b and d, exposition of RT to air and reposition into scrotum. G4: not operated. Euthanasia and histology was done after 20 days. Histometry and lesions score classification was done. Testicular vascularization was studied with comparison between G1 and G3. A p OBJETIVOS: Estudar histologicamente a vascularização entre um retalho cecal e o testículo de ratos Wistar. MÉTODOS: Cinquenta e três ratos foram estudados. G1, submetidos a (a celiotomia, (b mobilização do testículo direito (TD para o abdome, (c sutura do retalho cecal ao TD, (d fechamento da cavidade. G2, procedimentos (a, b e d, com o TD fixado no abdome. G3, procedimentos (a, b e d, com exposição do TD ao ar e retorno ao escroto. G4 não operados. Após 20 dias, eutanásia e histologia. Realizou-se histometria e classificação segundo escore de lesão. Avaliou-se a vascularização testicular, comparando-se os grupos 1 e 3. Considerou-se significativo um p < 0,05. RESULTADOS: Diâmetros dos TD no G1, iguais ao G2 e diferentes de G3 e G4. O escore de lesão nos TD foi de 5,83 pontos para o G1, de 3,3 pontos para o G2, não havendo diferença significativa, porém diferentes de G3 e G4 (sem lesão. A vascularização no G1 teve média de 16,9 vasos por campo de grande aumento no TD. No G3 a média foi de 0,96 no TD e 0,92 no TE, com diferença significativa. O peso médio do G1 foi igual ao G2 e diferente de G3 e G4. CONCLUSÃO: Houve aumento significativo da vascularização entre o retalho e o testículo do rato.

  17. Evaluation of testosterone serum levels in testicular interstitial fluid under thyroxine influence; Avaliacao da testosterona no fluido intersticial testicular sob influencia da tiroxina

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Isvania Maria S. da; Pereira, Simey de L.S.; Souza, Grace Mary L.; Carvalho, Elaine F.M.B.; Catanho, Maria Teresa J. de A. [Pernambuco Univ., Recife, PE (Brazil). Dept. de Biofisica e Radiobiologia; Silveira, Maria de Fatima G. da [Pernambuco Univ., Recife, PE (Brazil). Dept. de Anatomia; Lima Filho, Guilherme L. [Universidade de Pernambuco (UPE), Nazare da Mata, PE (Brazil). Faculdade de Formacao de Professores

    2000-07-01

    The thyroid hormones possibly exert a reciprocal action between testicular steroids and Sertoli's cells during the premature period. This work aims to evaluate thyroxine effect on testosterone serum levels and in the testicular interstitial fluid (TIF) in rats. Wistar males rats, 22 days old, 80g of body weight, were induced to hyperthyroidism with thyroxine (20{mu}g/kg) in periods of 5, 10, 15 and 20 consecutive days. After the treatment the animals were weighed and sacrificed for blood and testis collection. From the blood serum and from the TIF drained from the testis were performed testes in order to obtain testosterone attached to {sup 125} I with a specific activity of 36,86 MBq/ig. The results have shown a testosterone significant lineal increase in both - serum and TIF - in the group treated with thyroxine as a time function. In the control group, testosterone levels remained low in both serum and TIF dosages. As a result, we were able to verify that the testosterone levels could be modified by thyroxine in serum and TIF. And so, it could affect luteinizing hormone (LH) and follicle-stimulating hormone (FSH) levels in hypophysis. (author)

  18. Efeito da alta pressão hidrostática na atividade de enzimas da polpa de açaí High hydrostatic pressure effect on enzyme activity of açai pulp

    Directory of Open Access Journals (Sweden)

    Ellen Mayra da Silva Menezes

    2008-12-01

    Full Text Available O Brasil vem conquistando o mercado externo de sucos de frutos tropicais, com destaque para o açaí, muito procurado por ser conhecido como um alimento funcional, devido à concentração de antocianinas, fibras dietéticas e ácidos graxos monoinsaturados. Entretanto, o açaí é altamente perecível, necessitando de intervenções tecnológicas para prolongar sua vida de prateleira. Nesse caso, o uso da Alta Pressão Hidrostática (APH pode ser uma alternativa aos processamentos tradicionais, por sua capacidade de ativar ou inativar enzimas. Peroxidases (POD e polifenoloxidases (PFO são as principais enzimas responsáveis por alterações indesejáveis das características originais de produtos vegetais e, com a sua inativação pela APH, pode-se evitar o escurecimento enzimático e manter as suas propriedades sensoriais. Com o objetivo de avaliar o efeito da APH em POD e PFO de polpa de açaí, adotaram-se as variáveis de pressão, temperatura e tempo. As atividades enzimáticas expressas em percentuais revelaram a POD mais estável, atingindo percentuais próximos a 100% (controle. As menores atividades foram a 90,74%, e quando se aplicaram 300 e 500 MPa a 25 °C por 5 minutos, as atividades aumentaram (112,34 e 132,98%, respectivamente. A atividade da PFO aumentou até 83,03% em relação ao controle, embora apresentasse inativação na maioria dos processos, evidenciando-se atividade a 35 °C/5 minutos de 53,25 e 53,75% a 300 e 500 MPa, respectivamente. Diante das condições experimentais, a APH mostrou-se eficaz na inativação parcial de oxidases na polpa de açaí.Brazil has been conquering tropical fruit juice international market , especially with açaí (native fruit with the highest penetration in the international, considered a functional food for its anthocyanin, dietetic fibe, and monounsaturated fat content. However, açaí is very perishable, so the use of technology is needed in order to ensure long shelf life. In this

  19. Seletividade e eficácia de herbicidas inibidores da enzima accase na cultura da mamona Selectivity and efficacy of accase-inhibiting herbicides in castor bean crop

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    C.D.G Maciel

    2011-09-01

    Full Text Available O experimento foi conduzido com o objetivo de avaliar a seletividade e eficácia de herbicidas inibidores de ACCase na cultura da mamoneira AL Guarany 2002, no município de Paraguaçu Paulista/SP, durante a safra 2002/2003. O delineamento experimental utilizado foi o de blocos ao acaso, com 11 tratamentos e quatro repetições, constituídos pelos herbicidas e adjuvantes: fluazifop-p-butil (313 g ha-1 + Agral® (0,2% v/v; sethoxydim (322 g ha-1 + Assist®(0,5% v/v; haloxyfop-methyl (120 g ha-1 + Assist® (0,5% v/v; clethodim+fenoxaprop-p-ethyl (75 g ha-1 + Assist® (0,5% v/v; quizalofop-p-ethyl (125 g ha¹ + Assist® (0,5% v/v; clethodim (156 g ha-1 + Assist® (0,5% v/v; propaquizafop (175 g ha-1 + Assist® (0,5% v/v; tepraloxydim (400 g ha-1 + Dash® (0,5% v/v; butroxydim (100 g ha-1 + Dash® (0,5% v/v; isoxaflutole (60 g ha-1; e testemunha capinada. No momento da aplicação a mamoneira encontrava-se com 4 a 6 folhas, e o Cenchrus echinatus, com 1 a 5 perfilhos. A mamoneira cv. AL Guarany 2002 apresentou alta seletividade aos herbicidas inibidores de ACCase, não sendo verificada fitointoxicação aos 14 DAA (dias após aplicação, com exceção do tepraloxydim, onde os sintomas persistiram até os 21 DAA, e do isoxaflutole (inibidor de HPPD, por apresentar injúrias nas folhas mais velhas e redução significativa de produtividade. A infestação de C. echinatus foi eficientemente controlada pelos herbicidas inibidores de ACCase entre 14 e 21 DAA (≥ 95,0%.This experiment aimed to evaluate the selectivity and efficacy of ACCase-inhibiting herbicides in castor bean crop, at Paraguaçu Paulista, São Paulo, during the 2002/03 agricultural season. The experimental design used was randomized complete blocks, with eleven treatments and four replicates, constituted by the following herbicides and adjuvants: fluazifop-p-butyl (313 g ha-1 + AgralTM (0.2% v/v; sethoxydim (322 g ha-1 + AssistTM (0.5% v/v; haloxyfop-methyl (120 g ha-1 + AssistTM (0

  20. Relações da dieta ovo-lácteo-vegetariana com o exercício físico e as enzimas antioxidantes superóxido dismutase e catalase

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    Mírian Rocha Váquez

    2011-06-01

    Full Text Available OBJETIVO: O objetivo deste trabalho foi estudar a influência da dieta ovo-lácteo-vegetariana e do exercício físico extenuante sobre as atividades das enzimas catalase e superóxido dismutase em dez indivíduos masculinos, jovens e saudáveis. MÉTODOS: O controle alimentar aplicou-se por quatro meses. Antes disso, foram recolhidas amostras de sangue em estado basal e cinco minutos após o exercício físico extenuante efetuado em esteira rolante. O mesmo procedimento foi aplicado após o controle alimentar. RESULTADOS: Os resultados mostraram que a dieta ovo-lácteo-vegetariana, em condições de repouso, reduziu de forma significativa a atividade da enzima catalase em 18,98% (pOBJECTIVE: This study aimed to study the influence of an ovolactovegetarian diet and strenuous physical exercise on the activity of the enzymes catalase and superoxide dismutase in 10 young, healthy men whose diet was controlled for four months. METHODS: Blood samples were collected at baseline and after the four-month period, before strenuous exercise and after 5 minutes of strenuous exercise on a treadmill. RESULTS: The results showed that the ovolactovegetarian diet reduced the activity of the enzyme catalase by 18.98% (p<0.05 and increased the activity of the enzyme superoxide dismutase by 77.84% (p<0.001 before strenuous exercise. After strenuous exercise, the ovolactovegetarian diet reduced the activity of the enzyme catalase by 26.11% (p<0.05 and did not affect the activity of the enzyme superoxide dismutase. CONCLUSION: The results indicate that a healthy ovolactovegetarian diet impacts the activity of both enzymes.

  1. Efeito do cobre na atividade da enzima pirogalol peroxidase em plantas de Myriophyllum aquaticum cultivadas em solução nutritiva Effect of copper on the activity of pirogalol peroxidase in Myriophyllum aquaticum plants cultivated in nutritives solution

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    V.D. Domingos

    2005-06-01

    Full Text Available Myriophyllum aquaticum é uma planta perene, herbácea, que pode se desenvolver totalmente submersa ou com a porção terminal dos ramos acima da superfície da água. É também considerada uma planta daninha que possui elevado potencial de colonização, o qual, dependendo da densidade populacional, pode causar aumento no teor de matéria orgânica e redução de oxigênio na água, comprometendo a qualidade da água e seus usos múltiplos. O objetivo do presente trabalho foi verificar a influência do cobre na atividade da pirogalol peroxidase de plantas de M. aquaticum submetidas à solução nutritiva contendo concentrações de cobre de 1,2; 11,2; 21,2; 31,2; e 41,2 µg L-1. O experimento foi conduzido em um delineamento experimental inteiramente casualizado, com quatro repetições e cinco tratamentos, aos quais as plantas foram submetidas durante 21 dias. Aos 81 dias após a instalação das mudas em solução nutritiva contendo os diferentes níveis de cobre, as folhas foram colhidas a partir do ápice da planta até o final do ramo, que não estavam em contato com a solução. Esse material fresco foi envolvido por plástico transparente e papel-alumínio e, a seguir, congelado em nitrogênio líquido, sendo armazenado em freezer a -20 ºC até o momento da determinação da atividade da enzima pirogalol peroxidase. A atividade da enzima foi progressiva com o aumento das doses de cobre. As plantas cultivadas com 40 µg L-1 de Cu2+ após três semanas, com base em avaliação visual, apresentaram redução no desenvolvimento.Myriophyllum aquaticum is a perennial, herbaceous plant which grows totally submerged or with the terminal portion of the branches above the surface of the water. It is also considered to be a harmful plant, possessing a high colonization potential which, depending on population density, can increase the organic matter content and reduce oxygen in the water, compromising the quality of water and its multiple uses

  2. Degradação ruminal da silagem de milho e da palha de arroz utilizando enzimas fibrolíticas exógenas - DOI: 10.4025/actascianimsci.v30i4.6462 Ruminal degradation of corn silage and rice straw using exogenous fibrolityc enzymes - DOI: 10.4025/actascianimsci.v30i4.6462

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    Telma Teresinha Berchielli

    2009-03-01

    Full Text Available Estudou-se o efeito da adição de enzimas fibrolíticas (celulase e xilanase sobre a degradabilidade in situ da matéria seca (MS, proteína bruta (PB, fibra em detergente neutro (FDN, fibra em detergente ácido (FDA e hemicelulose da silagem de milho (SM e da palha de arroz (PA, utilizando seis bovinos fistulados no rúmen. Também foi avaliada a proporção de nitrogênio (N insolúvel em detergente ácido em relação ao N total (NIDA/N total. As enzimas fibrolíticas foram extraídas dos fungos Aspergillus Níger e Trichoderma longibrachiatum, sendo fornecido 0,75 g kg-1 de MS animal-1 dia-1, via cânula ruminal. Os tempos de incubação foram: 0, 3, 6, 12, 24, 48, 72 e 96 h. Os resíduos de incubação foram comparados por meio da microscopia eletrônica de varredura (MEV. A fração solúvel da MS e da PB da silagem de milho aumentou com a adição de enzimas fibrolíticas. Não houve efeito das enzimas sobre a degradação da parede celular dos volumosos. A adição de enzimas não alterou o teor de NIDA/N total da silagem de milho, porém aumentou esta proporção nos resíduos da palha de arroz incubados durante 12 e 48 h. As observações ao MEV indicaram aumento da colonização bacteriana sobre a parede celular dos volumosos, mas sem efeito sobre a degradação ruminal.This study evaluated the effect of fibrolytic enzyme addition (cellulase and xylanase on the dry matter (DM, crude protein (CP, neutral detergent fiber (NDF, acid detergent fiber (ADF and hemicellulose in situ degradability of corn silage (CS and rice straw (RS, using six cattle cannulated on the rumen. Acid detergent insoluble nitrogen (ADIN/total N was evaluated. The fibrolytic enzymes were extracted from Aspergillus niger and Trichoderma longibrachiatum fungi, supplied at 0.75 g/kg of DM/animal/day, through ruminal cannula. The incubation times were 0, 3, 6, 12, 24, 48, 72 and 96 hours. The incubation residues were compared by scanning electron micrograph (SEM

  3. Purificação da enzima polifenoloxidase (PFO de polpa de pinha (Annona squamosa L. madura Purification of polyphenoloxidase (PPO from ripe custard apple (Annona squamosa L. pulp

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    Eliza Dorotea Pozzobon de A. LIMA

    2001-01-01

    Full Text Available A PFO (EC 1.10.3.2 extraída de polpa de pinha madura (Annona squamosa L., foi parcialmente purificada por fracionamento em sulfato de amônio a 80% e purificada 411 (Fração I e 118 (Fração II vezes após cromatografia em coluna de troca iônica em DEAE-Toyopearl 650M, e 566 vezes em coluna de Toyopearl HW55F. A enzima da fração mais ativa foi caracterizada bioquimicamente. Quanto aos parâmetros cinéticos, a enzima apresentou valores de Km e Vmax de 7,14mM e 302,0 unidades/min/ml para catecol e 25,0mM e 180,2 unidades/min/ml para L-dopa respectivamente, substratos que demonstraram maior especificidade. O peso molecular foi estimado em 90.700 daltons através de filtração em gel Sephadex G-200. O teor de cobre da enzima purificada encontrado foi de 11ppm/peso da amostra liofilizada. Quanto à composição de aminoácidos, a PFO apresentou maiores teores de ácido aspártico, ácido glutâmico e lisina e menores teores de metionina, arginina e tirosina, com ausência de cisteína.The PPO (EC 1.10.3.2 extract of ripe custard apple (Annona squamosa L. pulps, was partially purified by ammonium sulphate fractionation and purified 411 (Fraction I and 118 (Fraction II fold in an ion exchange column of DEAE-Toyopearl 650M, and 566 fold in a gel column of Toyopearl HW 55F. The enzyme of the most active fraction was characterized biochemically. The partially purified and purified enzyme used the o-diphenols as substrates and no activity towards monophenols was detected. With respect to the kinetic parameters, the purified enzyme presented values for Km and Vmax of 7.14 mM and 302.0 units/min/ml for catechol and 25.0 mM and 180.2 units/min/ml for L-dopa respectively, substrates which show greater specificity. The molecular weight was estimated as 90.700 daltons using gel filtration on Sephadex G-200. In the analysis of copper, the purified enzyme gave a value of 11ppm by weight of the liofilized sample. The amino acid composition of the custard

  4. Ativação da enzima conversora de angiotensina no coração após infarto do miocárdio e suas repercussões no remodelamento ventricular

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    Mill José Geraldo

    1997-01-01

    Full Text Available OBJETIVO: Determinar as alterações de atividade da enzima conversora de angiotensina (ECA no coração com infarto do miocárdio (IM e comparar os efeitos do captopril e losartan em parâmetros morfológicos e funcionais de ratos com IM. MÉTODOS: O IM foi produzido em ratos Wistar por ligadura de ramos da artéria coronária esquerda. Os controles (Con foram submetidos a uma cirurgia fictícia. Animais com IM e Con foram tratados com captopril (30mg/kg/dia ou losartan (15mg/kg/dia e estudados 30 dias após, determinando-se a atividade da ECA nos ventrículos direito (VD e esquerdo (VE, as alterações hemodinâmicas e as concentrações de hidroxiprolina (OH-Pro e proteína total no VD e VE. RESULTADOS: A atividade da ECA aumentou no VD (+25% e VE (+70% após IM. A maior atividade foi observada na cicatriz fibrótica, onde atingiu cerca de 4,5 vezes a do músculo do VE que sobreviveu ao IM (420±68 vs 94±8nmoles/g/min; P<0,01. O IM determinou aumento da pressão diastólica final e hipertrofia do VD e VE. Captopril e losartan foram igualmente eficazes em atenuar a hipertrofia e o aumento da pré-carga. O captopril também atenuou o aumento de OH-Pro no VD e VE após IM. O IM reduziu a concentração de proteína principalmente no músculo de VE, efeito esse acentuado pelo captopril. CONCLUSÃO: A grande atividade da ECA na cicatriz deve produzir altas concentrações de angiotensina II (AII no sangue que drena da cicatriz. Os efeitos dos inibidores da ECA seriam decorrentes, principalmente, da redução de geração local de AII, e não de aumento de cininas, uma vez que captopril e losartan exerceram efeitos similares no remodelamento pós-infarto.

  5. Metodologia de seleção de cepas para produção etodologia da ciclodextrina glicosiltransferase e para purificação da enzima - DOI: 10.4025/actascihealthsci.v29i1.133 Strains selection methodology for cyclodextrin glycosyltransferase production and enzyme purification - DOI: 10.4025/actascihealthsci.v29i1.133

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    Graciette Matioli

    2007-12-01

    Full Text Available As ciclodextrinas (CDs são maltooligossacarídeos, produzidas a partir do amido, pela enzima ciclodextrina glicosiltransferase (CGTase. Esta pesquisa teve por objetivo estabelecer metodologias de seleção de cepas para produção de CGTase e para purificação da enzima. Os microrganismos foram selecionados a partir de 53 análises de solos de cultura de amido, em placas contendo meio de cultivo específico, para seleção de cepas produtoras de CGTase. As enzimas foram obtidas com cultivo destes microrganismos em meio líquido. As atividades enzimáticas das CGTases foram determinadas pelos métodos espectrofotométricos e precipitação com tricloroetileno. A cepa isolada do solo de aveia foi a que apresentou maior atividade [0,1864 mol de -CD (min mL-1]. Esta cepa foi utilizada para a produção da enzima em escala laboratorial e purificação em cromatografia de afinidade bioespecífica. A cepa selecionada nesta pesquisa abre novas perspectivas para produção de enzima e CDs em escala industrial. Palavras-chave: ciclodextrina, glicosiltransferase, CGTase.Cyclodextrins (CDs are maltooligosaccharides produced from starch by cyclodextrin glycosyltransferase (CGTase enzyme. This research aimed at establishing method for strains selection for CGTase production and enzyme purification. The microorganisms were selected from 53 analyses of starch cultures soils on plates containing specific culture medium for strains selection that produce CGTase. The enzymes were obtained by culturing these microorganisms in liquid medium. The enzyme activity was determined with photospectrometric methods and precipitation with trichloroethylene. The strain isolated from oat soil was the one that showed the highest activity [0.1864 µmol of ß-CD (min mL-1]. This strain was used for enzyme production in laboratory scale and purification by biospecific affinity chromatography. The strain selected in this research opens new perspectives for enzymes

  6. Estudo da influência de diferentes parâmetros na produção de enzimas líticas Study of different parameters in the production of lytic enzymes

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    Luciana Francisco Fleuri

    2008-06-01

    Full Text Available O presente trabalho visou o estudo do efeito de diferentes variáveis na produção de β-1,3 glucanases, proteases e de quitinases pela linhagem Cellulosimicrobium cellulans 191, em meios de cultivo A, B e C, respectivamente. Foram realizados planejamentos fatoriais 2³, e os fatores estudados foram: pH inicial, temperatura e agitação dos frascos. No planejamento experimental para a produção de β-1,3 glucanase em meio de cultivo A foi verificada maior produção da enzima (0,64 U.mL-1 com pH inicial de 8,5 após 24 horas de fermentação a 33 ºC e 200 rpm. Os parâmetros pH, agitação dos frascos e interação entre todos os parâmetros foram estatisticamente significativos. No planejamento experimental para a produção de protease em meio de cultivo B foi verificada maior produção da enzima (4,25 U.mL-1 com pH inicial de 6,5 após 30 horas de fermentação a 20 ºC e 200 rpm. O pH foi o único parâmetro estatisticamente significativo. No planejamento experimental para a produção de quitinase em meio de cultivo C foi verificada maior produção da enzima (7,06 U.mL-1 com pH inicial de 5,5 após 72 horas de fermentação a 25 ºC e 200 rpm. Todos os parâmetros estudados e suas interações foram estatisticamente significativos. Os coeficientes de determinação, as análises de variância e os teste F demonstraram que os modelos de primeira ordem obtidos foram considerados estatisticamente significativos adotando um nível de confiança de 95%.The aim of this work was to study the effects of different parameters in the production of β-1,3 glucanases, proteases and chitinases by Cellulosimicrobium celulans 191, in culture media A, B and C, respectively. The experimental designs employed were 2³ factorial designs, and the factors studied were: initial pH, temperature and rotary shaker speed. The experimental results for the production of β-1,3 glucanase in culture medium A showed maximum activity (0.64 U.mL-1 with an initial pH of

  7. Topical estradiol does not interfere with the expression of the metalloproteinase-1 enzyme in photo exposed skin cells Estradiol tópico não interfere na expressão da enzima metaloproteinase-1 em células da pele fotoexposta

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    Luciana Neder

    2012-02-01

    Full Text Available BACKGROUND: In postmenopausal women there is a rapid destruction of dermal collagen, resulting in accelerated skin ageing, which is manifested by cutaneous atrophy, increased number and depth of wrinkles and sagging. This accelerated catabolism of the collagen is due to estrogen deficiency and increased synthesis of the metalloproteinase-1 enzyme, which degrades the dermal collagen. OBJECTIVES: To assess whether the use of topical estradiol 0.05% cream on photo exposed skin can inhibit the expression of the metalloproteinase-1 enzyme on the dermis and subsequently the rapid loss of collagen in women after menopause. METHODS: We included 40 postmenopausal women without hormone replacement therapy. Information about lifestyle, lipid profile, blood glucose level, thyroid hormones, mammography, Pap smear and transvaginal ultrasound were obtained to rule out associated diseases. Skin biopsy of the right preauricular region was performed before and after treatment with topical estradiol 0.05% for 30 days. The biopsy specimens were subjected to immunohistochemistry to identify the expression of the metalloproteinase-1 enzyme. RESULTS: There was no statistically significant difference on the expression of the metalloproteinase-1 enzyme in keratinocytes, fibroblasts and endothelial cells before and after treatment with topical estradiol for 30 days. CONCLUSION: Treatment with estradiol 0.05% cream, in photo exposed skin for 30 days, does not inhibit the production of metalloproteinase-1.FUNDAMENTOS: Na pós-menopausa, ocorre rápida destruição do colágeno dérmico, com consequente envelhecimento acelerado da pele, que se expressa com atrofia cutânea, aumento do número e da profundidade das rugas e flacidez. Esse catabolismo acelerado do colágeno ocorre por deficiência estrogênica e aumento na síntese da enzima metaloproteinase-1, que degrada o colágeno dérmico. OBJETIVOS: Avaliar se o uso de estradiol tópico a 0,05% em creme na pele

  8. Angiotensin converting enzyme (ACE DD genotype: relationship with venous thrombosis Genótipo DD da enzima conversora de angiotensina (ECA: relação com trombose venosa

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    Terezinha P. Munhoz

    2005-06-01

    Full Text Available Venous thromboembolism is a common multifactorial disease associated with acquired and inherited predisposing factors. Several polymorphisms, e.g. factor V Leiden, factor II G20210A and deficiency of antithrombin, protein C and protein S, have been associated with venous thromboembolism. Angiotensin converting-enzyme affects hemostasis by decreasing fibrinolysis. Angiotensin converting-enzyme gene polymorphism, a 287 pb insertion/deletion at introns 16, is related to variations in enzyme serum levels. The DD genotype has been associated with increased risk for venous thrombosis. This study examined the frequency of the angiotensin converting-enzyme alleles I and D and their association with venous thrombosis in a group of individuals from the south of Brazil. Seventy-one patients with deep venous thrombosis and/or pulmonary thromboembolism and 71 healthy individuals were analysed in a case-control study. The angiotensin converting-enzyme ID genotyping was performed by polymerase chain reaction. The frequencies of the D allele and DD genotype were, respectively, 51.4% and 22.5% for patients, and 64.7% and 45.0% for controls. The Odds Ratio for the dominant hypothesis (DD+ID versus II genotypes was 0. 75 (CI 95%; 0.29-1.93 and the Odds Ratio for recessive hypothesis (DD versus ID+II was 0.35 (CI 95%; 0.16-0.78. In conclusion, our results indicate a protective effect of the angiotensin converting-enzyme DD genotype on venous thromboembolism.O troemboembolismo venoso (TEV é uma doença multifatorial associada com fatores de risco adquiridos e hereditários. Vários polimorfismos, tais como fator V de Leiden, mutação G20210A da protrombina e as deficiências de proteína C, proteína S e anti-trombina são considerados fatores de risco para TEV. A enzima conversora da angiotensina (ECA afeta a hemostasia diminuindo a fibrinólise. O polimorfismo no gene da ECA, caracterizado pela inserção/deleção de um fragmento de 287 pb no intron16, est

  9. Diversidade de genes codificadores de enzimas do metabolismo secundário no microbioma do trato gastrointestinal de bovino da raça Nelore

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    Freitas, Fernanda de Souza

    2014-01-01

    O estudo da diversidade de peptídeo sintetases não ribossomais (NRPS) e policetídeo sintases (PKS) de origem microbiana em ambientes naturais é uma importante ferramenta para a busca de metabólitos secundários de interesse industrial. Essa informação, aliada à descoberta da capacidade dos micro- organismos anaeróbios em sintetizar metabólitos secundários, torna o microbioma do trato gastrointestinal (TGI) do bovino da raça Nelore, caracterizado recentemente, um ambiente em potencial para a bi...

  10. Testicular microlithiasis and testicular cancer

    DEFF Research Database (Denmark)

    Pedersen, Malene Roland; Rafaelsen, Søren Rafael; Møller, Henrik

    2016-01-01

    Purpose To perform a systematic literature review to assess whether the occurrence of testicular microlithiasis (TML) in conjunction with other risk factors is associated with testicular cancer. Methods A systematic literature search was performed of original articles in English published 1998...... In total, 282 abstracts in were identified. Based on title and abstract the eligibility was assessed and 31 studies were included. Five conditions in relation to TML and testicular cancer emerged: Down syndrome, McCune–Albright syndrome, cryptorchidism, infertility and familial disposition of testicular...... cancer. Conclusion Data support the conclusion that TML is not an independent risk factor for testicular cancer but associated with testicular cancer through other conditions. In male infertility, TML appears to be related to an increased risk of testicular cancer possibly as part of a testicular...

  11. Estresse salino em duas variedades de cana-de-açúcar: enzimas do sistema antioxidativo e fluorescência da clorofila Salinity stress in two varieties of sugar cane: enzymes of the antioxidant system and chlorophyll fluorescence

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    Lilia Willadino

    2011-06-01

    Full Text Available O Brasil destaca-se por ser o maior produtor de cana-de-açúcar (Saccharum officinarum L. e por dominar todos os estágios da tecnologia de produção de açúcar e etanol. Atualmente se observa a expansão dessa cultura para a região semiárida brasileira, a qual apresenta solos propensos à salinização. O presente trabalho objetivou avaliar a resposta à salinidade de duas variedades de cana-de-açúcar. O ensaio foi implantado em casa de vegetação, em delineamento inteiramente casualizado, em esquema fatorial 2 x 8 com cinco repetições, correspondendo a duas variedades de cana-de-açúcar (RB867515 e RB863129 e oito níveis de NaCl (0; 25; 50; 75; 100; 125; 150; 200 mM de NaCl. A salinidade induziu aumento na fluorescência e diminuição na concentração de clorofila em ambas as variedades. A redução da clorofila, entretanto, foi maior na variedade RB867515. Observou-se, nesta mesma variedade, aumento da atividade da peroxidase do ascorbato (APX e da catalase (CAT, enquanto na variedade RB863129 ocorreu redução na atividade dessas enzimas. Esses resultados indicam que a variedade RB867515 apresenta um mecanismo mais eficiente na proteção da planta contra danos no aparato fotoquímico e contra a ação de espécies reativas de oxigênio, em particular o H2O2.Brazil is seen as being the largest producer of sugarcane (Saccharum officinarum L. and of mastering all stages in the production of sugar and ethanol. Currently this production is being expanded into the semi-arid regions of Brazil, where there are soil-types prone to salinity. This study aimed to evaluate the response to salinity in two sugarcane genotypes, RB867515 and RB863129. Salinity caused an increase in chlorophyll fluorescence and a reduction of chlorophyll concentration in both varieties. The reduction of chlorophyll however was higher in RB867515. In this same type, an increase in the activity of ascorbate peroxidase (APX and catalase (CAT was observed, while in

  12. Toxinas killer e produção de enzimas por Candida albicans isoladas da mucosa bucal de pacientes com câncer

    OpenAIRE

    Elida Elias de Oliveira; Soraya Cristina Silva; Ailton José Soares; Cecília Attux; Brice Cruvinel; Maria do Rosário Rodrigues Silva

    1998-01-01

    Infecções oportunistas da cavidade bucal são primariamente causadas por fungos do gênero Candida e freqüentemente ocorrem em pacientes com câncer que estão sobtratamento quimioterápico e antibacteriano. De 44 amostras coletadas da mucosa oral de pacientes com câncer, observou-se o isolamento de 25 leveduras do gênero Candida em cultivo realizado em ágar Sabouraud-dextrose. Foram identificados Candida albicans em 24 (96%) isolados e C. krusei em 1 (4%). As características fenotípicas das amost...

  13. Atividade de enzimas relacionadas com a mobilização de carboidratos durante a dormência da nogueira (Juglans Regia Walnut enzyme activity related with carbohydrate mobilization during dormancy period

    Directory of Open Access Journals (Sweden)

    Idemir Citadin

    2009-06-01

    Full Text Available A brotação da nogueira é dependente da mobilização de carboidratos do lenho para as gemas localizadas na porção superior dos ramos. O objetivo do trabalho foi contribuir para o entendimento do mecanismo de brotação acrótona da nogueira, em clima temperado, através da mensuração da atividade da ±-amilase (EC 3.2.1.1 e sacarose fosfato sintase (SPS - EC 2.4.1.14 relacionadas com a mobilização de carboidratos, durante o período de dormência. Para cada coleta, foram amostrados cinco ramos do ano, durante os meses de setembro a março. Em abril, próximo à retomada do crescimento ativo, foram feitas três amostragens. As partes apical, subapical e da base dos ramos foram separadas em casca, lenho (xilema e gemas. O tempo médio de brotação (TMB em condições controladas (25ºC, a umidade ponderal e a atividade das enzimas acima relacionadas foram determinadas. Os resultados obtidos reforçam a teoria de que o gradiente de brotação na nogueira se desenvolve durante a ecodormência e apresenta uma relação de dependência com a atividade da á-amilase; não está evidente a relação da atividade da SPS com a evolução do crescimento das gemas, durante a ecodormência.Juglans regia L. sprout depends on the carbohydrate mobilization from the parenchyma cells into the buds located in the upper portion of the twigs. The objective of this work was to contribute to the walnut tree sprout acrotony mechanism, in temperate climate, through the activity of alpha-amylase (EC 3.2.1.1, and Sucrose Phosphate Synthase (SPS - EC 2.4.1.14 mensuration, related to carbohydrate mobilization, during the dormancy period. From September to March, five one-year-old twigs were monthly sampled around. In April, close to budbreak, three samples were accomplished. The twigs were divided in apical, sub-apical, and base, and separated in bark, buds and wood (xylem. The average time of bud break in controlled conditions (25ºC, water content, and activity

  14. Purification of a membrane-bound trypsin-like enzyme from the gut of the velvetbean caterpillar (Anticarsia gemmatalis Hübner =Purificação de uma enzima “tipo tripsina” não-solúvel do intestino da lagarta da soja (Anticarsia gemmatalis Hübner

    Directory of Open Access Journals (Sweden)

    Marcelo Matos Santoro

    2012-07-01

    Full Text Available Disruption of protein digestion in insects by specific endoprotease inhibitors is being regarded as an alternative to conventional insecticides for pest control. To optimize the effectiveness of this strategy, the understanding of the endoprotease diversity of the target insect is crucial. In this sense, a membrane-bound trypsin-like enzyme from the gut of Anticarsia gemmatalis fifth-instar larvae was purified. Non-soluble fraction of the gut extract was solubilized with 3-[(3-cholamidopropyldimethylammonio]-1-propanesulfonate (CHAPS and subjected to a p-aminobenzamidine affinity chromatography followed by anion-exchange chromatography. The yield of the purified enzyme was 11% with a purification factor of 143 and a final specific activity of 18.6 µM min.-1 mg-1 protein using N-α-benzoyl-L- Arg-p-nitroanilide (L-BApNA as substrate. The purified sample showed a single band with proteolytic activity active and apparent molecular mass of 25 kDa on SDS-PAGE. Molecular mass determined by MALDI-TOF mass spectrometry was 28,632 ± 26 Da. Although the low recovery and the difficulties in purifying large enzyme amounts limited its further characterization, the results contribute for the understanding of the proteases present on A. gemmatalis gut, which are potential targets for natural or specifically designed protease inhibitors.Comprometer a digestão de proteínas dos insetos pelo uso de inibidores específicos de endoproteases tem sido amplamente estudado como um método de controle de pragas alternativo ao uso dos inseticidas convencionais. No processo de otimização desta estratégia, o conhecimento da diversidade das endoproteases do inseto alvo torna-se crucial. Neste sentido, uma enzima “tipo-tripsina” ligada à membrana obtida do intestino de larvas do 5° instar de A. gemmatalis foi purificada. A fração insolúvel do extrato do intestino foi solubilizada com 3-[(3-cholamidopropyldimethylammonio]-1-propanesulfonate (CHAPS e submetida

  15. Testicular dysgenesis syndrome and the estrogen hypothesis: a quantitative meta-analysis A síndrome da disgenesia testicular e a hipótese do estrogênio: uma meta-análise quantitativa

    Directory of Open Access Journals (Sweden)

    Olwenn Martin

    2008-10-01

    Full Text Available Male reproductive tract abnormalities such as hypospadias and cryptorchidism, and testicular cancer have been proposed to comprise a common syndrome together with impaired spermatogenesis with a common etiology resulting from the disruption of gonadal development during fetal life, the testicular dysgenesis syndrome (TDS. The only quantitative summary estimate of the link between prenatal exposure to estrogenic agents and testicular cancer was published over 10 years ago; other reviews of the link between estrogenic compounds, other than the potent pharmaceutical estrogen diethylstilbestrol (DES, and TDS end points have remained inconclusive. We conducted a quantitative meta-analysis of the association between the end points related to TDS and prenatal exposure to estrogenic agents. Inclusion in this analysis was based on mechanistic criteria, and the plausibility of an estrogen receptor (ER-α-mediated mode of action was specifically explored. Eight studies were included, investigating the etiology of hypospadias and/or cryptorchidism that had not been identified in previous systematic reviews. Four additional studies of pharmaceutical estrogens yielded a statistically significant updated summary estimate for testicular cancer. Results of the subset analyses point to the existence of unidentified sources of heterogeneity between studies or within the study population.Sugeriu-se que anomalias do trato reprodutivo masculino como hipospádia e criptorquidismo, assim como o câncer de testículo, componham uma síndrome comum com diminuição da espermatogênese, e de etiologia comum, a interrupção do desenvolvimento gonadal na fase fetal, a síndrome de disgenesia testicular (SDT. O único levantamento quantitativo da relação entre exposição pré-natal a agentes estrogênicos e câncer de testículo data de mais de dez anos; outras revisões da relação entre compostos estrogênicos diferentes do potente estrogênio sint

  16. Testicular Torsion

    Science.gov (United States)

    ... Campbell-Walsh Urology. 10th ed. Philadelphia, Pa.: Saunders Elsevier; 2012. http://www.clinicalkey.com. Accessed Feb. 13, 2015. Somani BK, et al. Testicular torsion. BMJ. 2010;341:c3213. Cubillos J, et al. Familial testicular torsion. Journal of Urology. 2011;185:2469. Hittelman AB. Neonatal ...

  17. TESTICULAR TORSION:

    African Journals Online (AJOL)

    TESTICULAR TORSION: EXPERIENCE IN THE MIDDLE BELT OF NIGERIA. S.A. KURANGA AND G.A. RAHMAN. Department of Surgery, University of l/orin Teaching Hospital, Ilorin, Nigeria. Objective To determine the fate of the testis affected by testicular torsion (TT) in relation to the duration of the symptoms and to.

  18. Testicular microlithiasis and testicular cancer

    DEFF Research Database (Denmark)

    Pedersen, Malene Roland; Rafaelsen, Søren Rafael; Møller, Henrik

    2016-01-01

    In total, 282 abstracts in were identified. Based on title and abstract the eligibility was assessed and 31 studies were included. Five conditions in relation to TML and testicular cancer emerged: Down syndrome, McCune–Albright syndrome, cryptorchidism, infertility and familial disposition of testicular...... dysgenesis syndrome....

  19. Resistência da planta daninha capim-marmelada (Brachiaria plantaginea aos herbicidas inibidores da enzima ACCase na cultura da soja Alexandergrass (Brachiaria plantaginea resistance to ACCase inhibitor herbicides

    Directory of Open Access Journals (Sweden)

    Dionisio L. P. Gazziero

    2000-01-01

    Full Text Available Populações de capim-marmelada (Brachiaria plantaginea infestantes da cultura da soja (Glycine max (L. Merrill no município de Mangueirinha, PR, controlada, ano após ano, com herbicidas inibidores da ACCase, apresentaram falhas de controle quando esses produtos foram aplicados na safra 95/96. Experimentos de doseresposta foram conduzidos em condições de casa de vegetação do Departamento de Horticultura da Escola Superior de Agricultura "Luiz de Queiroz", Piracicaba, SP, e da Embrapa Soja, Londrina, PR, com o objetivo de confirmar essa resistência, bem como avaliar o nível de resistência e resistência cruzada a herbicidas pertencentes aos grupos químicos das ciclohexanidionas e ariloxifenoxi-propionato. Plantas de capimmarmelada supostamente resistentes foram tratadas com diversos herbicidas e doses e comparadas com plantas de uma população suscetível dessa infestante. Os tratamentos foram estabelecidos considerando-se as doses recomendadas dos produtos, metade delas e, duas, quatro e oito vezes superiores a recomendada. Os produtos e as doses aplicadas foram haloxyfopmethyl nas doses 0; 60; 120; 240; 480 e 960 g i.a./ha, mais o espalhante adesivo Joint 0,5% v/v, fluazifop-p-butil nas doses 0; 94; 188; 376; 752 e 1504 g i.a./ha, mais o espalhante adesivo Agral 0,2% v/v, sethoxydim nas doses 0; 115; 230; 460; 920 e 1840 g. Os resultados de percentagem de controle foram submetidos à análise de regressão e, através dos modelos ajustados, foram obtidos os valores de GR50 (dose necessária para proporcionar 50% de controle de cada biótipo. As relações médias de GR50 e os diferenciais de controle nas doses recomendadas dos herbicidas (S-R foram calculados. Os diferenciais de controle nas doses recomendadas (S-R foram 97 e 11; 96 e 62; 99 e 86; 0,6 e 4; 20 e 17; 88 e 35 para os herbicidas haloxyfop-methyl, fluazifop-p-butil, sethoxydim, clethodim, propaquizafop e fenoxaprop-p-ethyl nos experimentos conduzidos em Piracicaba e

  20. Testicular Cancer Screening

    Science.gov (United States)

    ... Professional Testicular Cancer Treatment Testicular Cancer Screening Testicular Cancer Screening (PDQ®)–Patient Version What is screening? Go to ... testicles, and need to be followed closely. Testicular Cancer Screening Key Points Tests are used to screen for ...

  1. Análise da variabilidade da freqüência cardíaca em pacientes hipertensos, antes e depois do tratamento com inibidores da enzima conversora da angiotensina II Analysis of heart rate variability in hypertensive patients before and after treatment with angiotensin II-converting enzyme inhibitors

    Directory of Open Access Journals (Sweden)

    Antônio da Silva Menezes Júnior

    2004-08-01

    Full Text Available OBJETIVO: Comparar a variabilidade de freqüência cardíaca em indivíduos normotensos e hipertensos e observar o comportamento do sistema nervoso autônomo após terapia com inibidores da enzima conversora de angiotensina II. MÉTODO: Estudados 286 pacientes com diagnóstico de hipertensão arterial, pela 1ª vez, e divididos em 4 grupos, conforme a pressão arterial diastólica (PAD: grupo A - PAD110 mmHg. Os pacientes do grupo A (normais e do grupo C (HA moderada, somando 110 e 79 pacientes, respectivamente, submeteram-se ao Holter-ECG 24h com análise de variabilidade de freqüência cardíaca no domínio do tempo (DT e no domínio da freqüência (DF. O grupo C foi tratado com inibidores da ECA durante 3 meses, e após esse período novamente avaliado com Holter-ECG 24h e variabilidade da freqüência cardíaca, e os valores comparados com os normotensos. RESULTADOS: Os parâmetros SDNN, PNN50 (DT e o espectro LF (DF foram significativamente diferentes para os dois grupos, com valores notadamente diminuídos em hipertensos (pOBJECTIVE: To compare heart rate variability in normotensive and hypertensive individuals and to observe the behavior of the autonomic nervous system after treatment with angiotensin II-converting enzyme inhibitors. METHOD: The study comprised 286 patients diagnosed with arterial hypertension (AH for the first time and divided into 4 groups according to diastolic blood pressure (DBP levels: group A - DBP110 mmHg. Group A (110 healthy individuals and group C (79 patients with moderate AH underwent 24-hour Holter-ECG with analysis of heart rate variability in time domain (TD and frequency domain (FD. The group C patients were treated with ACE inhibitors for 3 months, and, after this period, they underwent a new 24-hour Holter-ECG study for assessing heart rate variability, the values being compared with those of normotensive individuals. RESULTS: The SDNN and PNN50 parameters (TD, and the LF spectrum (FD were

  2. TESTICULAR AND EPIDIDYMAL HISTOPATHOLOGICAL EVALUATION IN MONGREL ADULT DOGS FROM SÃO JOÃO DA BOA VISTA (SP REGION AVALIAÇÃO HISTOPATOLÓGICA TESTICULAR E EPIDIDIMÁRIA EM CÃES ADULTOS SEM RAÇA DEFINIDA (SRD DA REGIÃO DE SÃO JOÃO DA BOA VISTA, SP

    Directory of Open Access Journals (Sweden)

    Renée Laufer Amorim

    2007-12-01

    Full Text Available

    Little has been explored about testicular and epidi-dymal changes in dogs in different Brazilian regions and their influence on canine fertility, mainly in mongrel dogs. This study was performed to verify the prevalence of testicular and epididymal histopathological changes in mongrel adult dogs from São João da Boa Vista (SP region, as well as the frequency according to animal size and occurrence of simultaneous testicular and epididymal lesions. The use of mongrel dogs was based on the fact that it is the most common breed in the Brazilian canine popula-tion. Testicles and epipidymis were obtained from 60 adult dogs, between 3 and 6 years old, in castration campaign and sorted to in small breed (28 animals, medium breed (28 animals and large breed (14 animals. Histopathological evaluation of the 120 testicles showed 107 cases of degeneration, 89 of tubular atrophy, 16 of hipoplasia, 6 of orchitis, 3 leydig cell tumor, 2 normal tissue, one sertolli cell tumor and one case of edema. In the epididymal evaluation, 55 were considered normal, 36 inflammatory, 22 papillary hyperplasia, 14 degenerations, 12 cribriform hyperplasia, 3 cases of fibrosis, one edema, one adeno-miosis and one spermatic granuloma. Testicular and epididymal lesions were more frequents in medium and large breeds. Cribriform epididymal hyperplasia was observed and papillary epididymal hyperplasia for papillary epithe-lial projections with normal morphology in the lumen was proposed.

    Key-words: Dog, epididym, testicle. histopathological alterations.

    A ocorrência de alterações testiculares e epididi-márias em cães nas diferentes regiões do país, assim como a influência delas sobre a fertilidade da espécie são ainda pouco exploradas, especialmente de cães sem raça definida (SRD. Neste estudo buscou-se determinar a prevalência das alterações histopatológicas testiculares e epididimárias nos

  3. Acetylcholinesterase enzyme activity in carp brain and muscle after acute exposure to diafuran Atividade da enzima acetilcolinesterase em cérebro e músculo de carpas após exposição aguda ao diafuran

    Directory of Open Access Journals (Sweden)

    Jaqueline Ineu Golombieski

    2008-01-01

    idella, Valenciennes, 1844 e carpa cabeça grande (Aristichthys nobilis, Richardson, 1845 foram expostos ao diafuran, um inseticida utilizado na cultura do arroz no sul do Brasil. O objetivo deste estudo foi verificar a relação entre concentração letal mediana (CL50 do diafuran e a atividade da enzima acetilcolinesterase (AChE em cérebro e músculo dessas espécies, como um possível biomarcador inicial da exposição a este inseticida. A CL50 foi determinada com peixes expostos a concentrações de diafuran em 96 h: carpa húngara: controle; 0,5; 1,0; 1,5; 2,0; 2,5 e 3,0 mg L-1; carpa capim: controle; 1,0; 2,0; 3,0 e 3,5 mg L-1 e carpa cabeça grande: controle; 0,5; 1,0; 1,5; 2,0; 3,0 e 4,0 mg L-1, bem como a determinação da AChE em concentrações próximas da CL50 para essas espécies. Valores de CL50 (concentrações nominais foram de 1,81 mg L-1 para carpa húngara, 2,71 mg L-1 para carpa capim e 2,37 mg L-1 para carpa cabeça grande. Todas as carpas expostas ao diafuran estavam letárgicas (menores concentrações ou imóveis. Diafuran inibiu significativamente a atividade da AChE em cérebro (~38 % e músculo (~50 % de todas as espécies estudadas. Atividade da AChE em músculo para carpa cabeça grande foi mais alta que cérebro (14,44 contra 5,94 µmol min-1 g proteína-1, respectivamente. Este estudo demonstrou que concentrações de diafuran utilizadas na cultura do arroz podem afetar o comportamento de Cyprinus carpio, Ctenopharyngodon idella e Aristichthys nobilis, e a atividade da acetilcolinesterase cerebral e muscular pode ser um biomarcador inicial de toxicidade deste inseticida.

  4. Testicular torsion

    DEFF Research Database (Denmark)

    Brasso, K; Andersen, L; Kay, L

    1993-01-01

    Thirty-five patients were examined 6-11 years after operation for torsion of the testis. Loss of testicular tissue was significantly associated with long preoperative duration of symptoms and with low postoperative sperm counts. The sex hormones were normal in the majority of patients but there w......Thirty-five patients were examined 6-11 years after operation for torsion of the testis. Loss of testicular tissue was significantly associated with long preoperative duration of symptoms and with low postoperative sperm counts. The sex hormones were normal in the majority of patients...

  5. Resistência de biótipos de Euphorbia heterophylla l. Aos herbicidas inibidores da enzima ALS utilizados na cultura de soja Resistance of Euphorbia heterophylla l. Biotypes to ALS enzyme inhibitor herbicides used in soybean crop

    Directory of Open Access Journals (Sweden)

    GERSON AUGUSTO GELMINI

    2001-01-01

    Full Text Available Os herbicidas constituem-se na principal medida de controle de plantas daninhas na cultura de soja; no entanto, a pressão de seleção causada pelo uso contínuo de produtos com o mesmo mecanismo de ação pode provocar a seleção de biótipos resistentes, como ocorreu com Euphorbia heterophylla L., que se mostrou resistente aos herbicidas inibidores da enzima acetolactato sintase (ALS em áreas dos Estados do Paraná e Rio Grande do Sul. Para comprovar possíveis novos casos, bem como alternativas para prevenção e manejo, coletaram-se sementes de plantas de E. heterophylla L., na região de Assis (SP, que sobreviveram a tratamentos, em que esses herbicidas foram sistematicamente aplicados nos últimos anos. Desenvolveu-se o experimento em casa de vegetação, comparando-se o biótipo resistente ao suscetível, quando submetido aos diversos herbicidas aplicados em pós-emergência. Aplicaram-se quando as plantas encontravam-se no estádio de duas a quatro folhas verdadeiras, nas doses zero, uma, duas, quatro e oito vezes a recomendada. Aos 20 dias após a aplicação, avaliaram-se os parâmetros relativos ao controle e produção de fitomassa epígea visando ao estabelecimento de curvas de doses-resposta, à obtenção dos fatores de resistência com base nos valores da DL50 e GR50, e à verificação da ocorrência de resistência múltipla. O biótipo resistente apresentou diferentes níveis de resistência aos herbicidas chlorimuron-ethyl e imazethapyr, demonstrando resistência cruzada aos inibidores da ALS dos grupos das sulfoniluréias e imidazolinonas. No entanto, foi eficientemente controlado nos tratamentos com fomesafen (250 g.ha-1, lactofen (120 g.ha-1, flumiclorac-pentil (40 g.ha-1, glufosinato de amônio (150 g.ha-1 e glyphosate (360 g.ha-1.Herbicides are the main tool for weed control in soybean crop, but the selection pressure attributed to the repeated application of the same herbicides and the same mechanism of action can

  6. Testicular lymphoma

    DEFF Research Database (Denmark)

    Møller, Michael Boe; d'Amore, F; Christensen, Bjarne Egelund

    1994-01-01

    In a Danish population-based non-Hodgkin's lymphoma registry, 2687 newly diagnosed patients were registered from 1983 to 1992. 39 had testicular involvement (TL) (incidence 0.26/10(5)/year). Median age was 71 years. 24 cases had localised and 15 had disseminated disease. Histologically, all cases...

  7. Testicular Cancer

    Science.gov (United States)

    ... of skin behind the penis. You can get cancer in one or both testicles. Testicular cancer mainly affects young men between the ages of ... undescended testicle Have a family history of the cancer Symptoms include pain, swelling, or lumps in your ...

  8. Atividade da enzima nitrato redutase em milho cultivado sob diferentes níveis de adubação nitrogenada e potássica Activity of the enzyme reductase nitrate in corn cultivated under different levels of nitrogen and potassium fertilization

    Directory of Open Access Journals (Sweden)

    Sueli Maria da Silva

    2011-11-01

    Full Text Available Em função de seu uso na alimentação humana e animal e de um elevado potencial produtivo, o milho constitui-se num dos mais importantes cereais cultivados e comercializados no mundo. O objetivo deste trabalho foi avaliar o efeito de diferentes doses de nitrogênio e potássio na atividade da enzima redutase do nitrato na cultura do milho em casa de vegetação. Foram utilizadas cinco doses de nitrogênio (0; 50; 100; 150 e 200kg ha-1 e cinco doses de potássio (0; 40; 80; 120 e 160kg ha-1. A atividade da enzima foi estimada in vivo após as plantas atingirem quatro folhas totalmente desdobradas. Utilizou-se o método baseado no princípio de que a quantidade de nitrito liberada por fragmentos de tecidos vivos num tampão, na presença de uma agente permanente e do substrato, reflete a atividade potencial da enzima. A atividade da enzima nitrato redutase sofreu influência significativa da interação das doses de nitrogênio e potássio, já que a interação N=100kg ha-1 e K=40kg ha-1 proporcionou as melhores médias do experimento. A partir dessa dose, o aumento no fornecimento tanto de nitrogênio quanto de potássio promoveu redução da atividade enzimática.Because of the use in human feeding, animal, and high productive potential, corn is considered to be one of the most important cultivated and commercialized cereals in the world. The aim of this research was to evaluate the effect of different potassium doses and nitrogen in the activity of the enzyme nitrate reductase in the corn culture in a greenhouse environment. Five dosages of nitrogen (0; 50; 100; 150 and 200kg ha-1 and five potassium dosages (0; 40; 80; 120 and 160kg ha-1 were used. The activity of the nitrate reductase was esteemed, in vivo after the plants reached four leaves totally unfolded. The method that was used is based on the principle of the amount of nitrite liberated by fragments of alive tissue in a buffer in the presence of a permanent agent and substrate

  9. The Danish Testicular Cancer database

    DEFF Research Database (Denmark)

    Daugaard, Gedske; Kier, Maria Gry Gundgaard; Bandak, Mikkel

    2016-01-01

    AIM: The nationwide Danish Testicular Cancer database consists of a retrospective research database (DaTeCa database) and a prospective clinical database (Danish Multidisciplinary Cancer Group [DMCG] DaTeCa database). The aim is to improve the quality of care for patients with testicular cancer (TC......) in Denmark, that is, by identifying risk factors for relapse, toxicity related to treatment, and focusing on late effects. STUDY POPULATION: All Danish male patients with a histologically verified germ cell cancer diagnosis in the Danish Pathology Registry are included in the DaTeCa databases. Data...... collection has been performed from 1984 to 2007 and from 2013 onward, respectively. MAIN VARIABLES AND DESCRIPTIVE DATA: The retrospective DaTeCa database contains detailed information with more than 300 variables related to histology, stage, treatment, relapses, pathology, tumor markers, kidney function...

  10. Análise da tendência temporal de dano renal agudo entre pacientes graves conforme polimorfi smos I/D e -262A > T da enzima conversora da angiotensina Temporal trends in acute renal dysfunction among critically ill patients according to I/D and -262A > T ACE polymorphisms

    Directory of Open Access Journals (Sweden)

    José Alberto Rodrigues Pedroso

    2010-06-01

    Full Text Available A síndrome de disfunção de múltiplos órgãos e sistemas (DMOS e a disfunção renal aguda compartilham muitos dos fatores fisiológicos envolvidos em seu desenvolvimento. Estudos recentes correlacionam suscetibilidades individuais, determinadas geneticamente, à disfunção de órgãos em pacientes criticamente enfermos, situação em que o gene da enzima conversora da angiotensina (ECA poderia ser um candidato para elucidar predisposição ou risco genético. Nosso objetivo foi examinar os efeitos da presença de dois polimorfismos, I/D e -262A > T, na disfunção renal em pacientes agudamente graves do Sul do Brasil. O escore SOFA (sequential organ failure assessment à admissão e a tendência da função renal (medida pelo escore renal diário do SOFA foram determinados em pacientes de unidade de terapia intensiva (UTI. Um total de 153 pacientes adultos (79 homens foi incluído no estudo. Houve monitoração diária da função renal durante toda a permanência na UTI e também pós-UTI. Observou-se a progressão para insuficiência renal (SOFA 3 e 4 nos primeiros sete dias de internação em UTI, bem como necessidade de diálise. As frequências genotípicas gerais em nossa amostra foram II = 0,17; ID = 0,46; DD = 0,37; e AA = 0,30; AT = 0,55; TT = 0,15; e as frequências alélicas foram I = 0,40, D = 0,60; e A = 0,56; T = 0,44. Este é o primeiro estudo para verificar a influência de polimorfismos I/D e -262A > T da ECA em disfunção renal aguda em pacientes críticos. Nenhuma associação significativa foi encontrada entre os genótipos ou as frequências alélicas e a evolução da função renal. Os polimorfismos I/D e -262A > T da ECA não têm impacto significativo sobre a evolução da função renal durante a primeira semana de internação na UTI nem exercem qualquer influência sobre a mortalidade em pacientes graves.Multiple organ failure syndrome and acute renal dysfunction share many of physiologic factors involved in

  11. Hipotensão arterial em cirurgia de revascularização do miocárdio: influência dos inibidores da enzima conversora de angiotensina Hipotensión arterial en cirugía de revascularización del miocardio: influencia de los inhibidores de la enzima conversora de angiotensina Arterial hypotension in myocardial revascularization surgery: influence of angiotensin-converting enzyme inhibitors

    Directory of Open Access Journals (Sweden)

    Míriam Gomes Jordão

    2002-04-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Os inibidores da enzima conversora da angiotensina (IECA são drogas muito utilizadas em estados hipertensivos e insuficiência cardíaca. Seu uso prolongado pode acarretar instabilidade hemodinâmica com episódios hipotensivos durante a indução anestésica. O objetivo deste estudo é comparar a incidência de hipotensão arterial em pacientes cronicamente tratados com IECA com pacientes não tratados com IECA, quando submetidos à anestesia para cirurgia de revascularização do miocárdio. MÉTODO: Participaram do estudo 50 pacientes, estado físico ASA II, III e IV, divididos em dois grupos: Grupo 1 - pacientes tratados com IECA por mais de dois meses e Grupo 2 - pacientes que não fazem uso de IECA. Os parâmetros avaliados foram pressão arterial média (PAM, freqüência cardíaca (FC, sendo anotados os menores valores da PAM e FC verificados em diferentes períodos da anestesia, e análise do segmento ST em D II e V5. Durante a CEC, foi determinada a resistência vascular sistêmica. RESULTADOS: A incidência de hipotensão arterial em pacientes anestesiados em uso de IECA foi maior do que no grupo controle em vários períodos da anestesia, mas principalmente na indução anestésica. Neste grupo foi necessário o uso de dopamina por tempo mais prolongado. Dos 26 pacientes tratados previamente com IECA, 23% necessitaram de drogas para correção da hipotensão desde a indução até a CEC e 19,1% em outros períodos da anestesia, perfazendo um total de 42,3%. No grupo controle nenhum paciente necessitou infusão contínua de drogas para aumentar a pressão arterial sistêmica, da indução até a CEC. Porém, 21% dos pacientes deste grupo necessitaram dopamina ou araminol em um ou mais períodos da anestesia. CONCLUSÕES: Neste estudo, os pacientes tratados com IECA, por tempo prolongado, apresentam maior incidência de hipotensão arterial na indução anestésica, necessitando, com maior freqüência, de

  12. PADRÃO ULTRASSONOGRÁFICO DO PARÊNQUIMA, MEDIASTINO E TÚNICAS TESTICULARES EM BOVINOS JOVENS DA RAÇA NELORE

    Directory of Open Access Journals (Sweden)

    Diogo José Cardilli

    2010-12-01

    Full Text Available The aim of the present study was to demonstrate the ultrasonographic patterns of the testicles parenchyma, mediastinum and tunics in young Nellore bulls with absence of echogenicity and relative density changes. Testes of 111 animals underwent clinical and ultrasonographic evaluation at 9, 13, and 15 months of age. Testicular parenchyma presented uniform pattern at low echogenicity. Positive correlation was found between age and testicular mediastinum. Testicular tunics were distinguished only in presence of fluid. The results of this research contribute with andrologic evaluation, allowing early detection of testicular disorders.

  13. Diferenças entre os sexos na atividade da enzima conversora de angiotensina e na pressão arterial em crianças: um estudo observacional Gender differences in serum angiotensin-converting enzyme activity and blood pressure in children: an observational study

    Directory of Open Access Journals (Sweden)

    Patricia Landazuri

    2008-12-01

    Full Text Available FUNDAMENTO: A enzima conversora da angiotensina (ECA, principal enzima do sistema renina-angiotensina (SRA, desempenha um papel importante na regulação da pressão arterial. A atividade enzimática da ECA e sua relação com a pressão arterial (PA durante a infância e a adolescência ainda não foram claramente estabelecidas. OBJETIVO: Determinar as diferenças relacionadas ao sexo nos níveis séricos da ECA e nas alterações da PA, bem como a relação entre ECA e PA, em estudantes entre 8 e 18 anos de idade. MÉTODOS: Os valores de pressão arterial, peso, altura, índice de massa corporal (IMC e níveis séricos da ECA foram medidos em 501 crianças. RESULTADOS: Os valores médios da ECA foram mais elevados em meninos (143,7 ± 57,1 do que em meninas (130,2 ± 54,9 (p = 0,004. Enquanto nas meninas os níveis séricos da ECA diminuíram com a idade, nos meninos ocorria o inverso. Após o início da puberdade, os níveis da ECA eram mais elevados em meninas do que em meninos da mesma idade. Nos dois sexos, a idade foi um forte determinante da pressão arterial (PA. Constatamos a existência de uma relação entre a ECA e a pressão arterial sistólica (PAS e a pressão arterial diastólica (PAD nas meninas (PAS: r = -0,20; p BACKGROUND: Angiotensin-converting enzyme (ACE is a key enzyme of the renin-angiotensin system that plays an important role in regulating blood pressure. ACE enzyme activity and its relationships with blood pressure (BP during childhood and adolescence have not yet been clearly established. OBJECTIVE: To determine serum ACE (S-ACE levels and BP changes in school children between 8 and 18 years of age and how S-ACE and BP in males and females might differ, as well as to determine S-ACE and BP relationships. METHODS: Blood pressure, height, weight, body mass index (BMI, and S-ACE were measured in 501 children. RESULT: Mean S-ACE values were higher in boys (143.7±57.1 than in girls (130.2 ± 54.9 (p = 0.004. S

  14. Ethylene evolution and endo-beta-mannanase activity during lettuce seed germination at high temperature Evolução de etileno e atividade da enzima endo-beta-mananase durante a germinação de sementes de alface sob altas temperaturas

    Directory of Open Access Journals (Sweden)

    Warley Marcos Nascimento

    2004-04-01

    Full Text Available High temperatures during lettuce seed imbibition can delay or completely inhibit germination and the endosperm layer appears to restrict the radicle protrusion. The role of endo-beta-mannanase during lettuce seed germination at 35°C and the influence of ethylene in endo-beta-mannanase regulation were investigated. Seeds of 'Dark Green Boston' (DGB and 'Everglades' (EVE were germinated in water, or 10 mmol L-1 of 1-aminocyclopropane-1-carboxylic acid (ACC, or 10 mmol L-1 of aminoethoxyvinylglycine (AVG, or 20 mmol L-1 of silver thiosulphate (STS. Seeds were also primed in polyethylene glycol (PEG, or PEG + ACC, PEG + AVG, or PEG + STS. Untreated seeds germinated 100% at 20°C. At 35°C, EVE seeds germinated 100%, whereas DGB seeds germinated only 33%. Seed priming or adding ACC during incubation increased germination at 35°C. Higher ethylene evolution was detected in EVE than in DGB during germination at 35°C. AVG did not inhibit seed germination of DGB at 35°C, but STS did. Higher endo-beta-mannanase activity was observed in EVE compared with DGB seeds. Providing ACC either during priming or during germination increased endo-beta-mannanase activity, whereas AVG and STS led to decreased or no activity. Ethylene may overcome the inhibitory effect of high temperature in thermosensitive lettuce seeds due to increased endo-beta-mannanase, possibly leading to weakening of the endosperm.Altas temperaturas durante a embebição das sementes de alface podem atrasar ou inibir a germinação e o endosperma parece ser o responsável na restrição da protrusão da radícula. O envolvimento da enzima endo-beta-mananase durante a germinação de sementes de alface a 35°C e a influência do etileno na regulagem desta enzima foram estudados. Sementes das cultivares Dark Green Boston (DGB e Everglades (EVE foram germinadas em água ou em soluções de 10 mmol L-1 de 1-aminociclopropano-1-ácido carboxilico (ACC, 10 mmol L-1 de amino-etoxi-vinil-glicina (AVG

  15. Prospective study on the effects of a polypropylene prosthesis on testicular volume and arterial flow in patients undergoing surgical correction for inguinal hernia Estudo prospectivo dos efeitos da prótese de polipropileno sobre o volume e o fluxo arterial testicular em pacientes submetidos à correção cirúrgica de hérnia inguinal

    Directory of Open Access Journals (Sweden)

    Edgar Valente de Lima Neto

    2007-08-01

    tempo: volume testicular (p=0,197; velocidade sistólica (p=0,257; velocidade diastólica (p=0,554; índice de resistividade (p=0,998; índice de pulsatilidade (p=0,582. CONCLUSÃO: Não se observou alteração no volume testicular e no fluxo sanguíneo da artéria testicular após seis meses nos pacientes submetidos à correção cirúrgica de hérnia inguinal com prótese de polipropileno..

  16. Enzimas amilolíticas exógenas en la alimentación de rumiantes

    OpenAIRE

    R Rojo-Rubio

    2007-01-01

    Recientemente, las enzimas exógenas se están usando para mejorar la degradabilidad ruminal de la fibra dietaria y del almidón presente en los alimentos utilizados en la alimentación de rumiantes. Estas enzimas representan una alternativa para incrementar la productividad y reducir los costos por alimentación, ya que se podría reducir el uso de granos, debido al mayor aporte de energía que realizarían los sustratos fibrosos. La actividad amilolítica de los microorganismos ruminales se da princ...

  17. Avaliação da função testicular utilizando a citologia aspirativa e testosterona sérica em cães

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    Fabiana Ferreira de Souza

    2004-04-01

    Full Text Available In order to verify alternative clinical approach in the reproductive evaluation of 4 adult dogs, the fine needle aspiration cytology (FNAC and serum testosterone levels were used together with testicular volume measurement and semen analysis. FNAC was performed in both testes and serum testosterone concentrations were assayed in regular intervals during a 24h period. Results of semen analysis and FNAC were normal in dogs 1 and 3. In dog 2, small testes, poor semen quality, a high percentage of Sertoli cells and early spermatids were found suggesting testicular degeneration. In dog 4, a small right testicle, poor semen quality with low sperm concentration and an uncounted amount of spermatozoa in the FNAC indicated testicular degeneration due to an obstructive lesion; whereas high percentage of distal droplets, thicker left epididymis and normal FNAC of the left testis suggested a slow sperm transit. Testosterone circadian rhythm was clear in 3 of 4 dogs, although concentrations were low. Testicular volume, semen analysis and testicular FNAC could provide valuable information about spermatogenesis. In contrast, serum testosterone concentration was not clearly correlated with any reproductive characteristic of those dogs.

  18. A regulação do lobo anterior da hypophyse por um hormonio testicular, especialmente sob o ponto de vista morphologico The regulation of the anterior hypophysis by a testicular hormone, principally under morphological consideration

    Directory of Open Access Journals (Sweden)

    Thales Martins

    1931-02-01

    Full Text Available The authors summarize the results of former works, based on the technics of parabiosis. After parabiotic union of two infantile rats, normal + castrate, the normal fellow enters into precocious puberty in about 7 days (Kallas. In the case of pairs: castrated male + normal female, the implants of testicles, or injection of maceration or aqueous extracts of testis in the castrated fellow, prevents the induction of early puberty in the normal female. In the case: castrated female + normal female, no inhibiting effect is provoked by that treatment. There is therefore a testicular hormone that regulates the hypophysis. After castration, this gland manifests a hyper-function and shows histological alterations, the chief character of these being the appearing in the anterior lobe, of the so-called castration cells, probably originated from basophile cells. Implants or injections of testis material prevent those alterations. This is a useful test; the effect is controlled by estimating the castration cells in the microscopic field. The testicular hormone that regulates the anterior lobe is probably another one, quite different from that which regulates the accessory genitalia. On account of the facts and experiments, it may be assumed that this new hormone is elaborated by the germinal epithelium of the testicles.

  19. Efeito da saturação por bases sobre a atividade de fosfatases em um solo de tabuleiro costeiro cultivado com citros. II. Constantes cinéticas das enzimas

    Directory of Open Access Journals (Sweden)

    M. F. Fernandes

    1998-09-01

    Full Text Available Determinaram-se as constantes cinéticas Km app e Vmax app de fosfatases de um solo de tabuleiro costeiro com diferentes valores de saturação por bases (32,0; 45,0; 64,0 e 76,6%. As constantes foram determinadas tanto em condições de reação com pH ótimo para atividade das fosfatases alcalinas e ácidas, quanto em valores de pH correspondentes aos de cada nível de saturação por bases. As fosfatases apresentaram cinética michaeliana, independentemente da saturação por bases ou da condição de pH utilizada para determinar a atividade enzimática. A elevação da saturação por bases resultou em redução dos valores de Km app das fosfatases ácidas e alcalinas, avaliadas nos respectivos valores de pH ótimo; ao passo que a Vmax app foi incrementada para as fosfatases alcalinas e permaneceu aproximadamente constante para as ácidas. Reduções do Km app e incrementos da Vmax app, em função do aumento da saturação por bases, também foram observados para fosfatases avaliadas nos valores de pH equivalentes aos dos tratamentos com saturação por base. As maiores variações nos valores de Km app e Vmax app, em função da saturação por base, ocorreram em resposta às alterações no pH. Outras características do solo alteradas pela saturação por bases também apresentaram efeito sobre as constantes cinéticas das fosfatases, porém em menor intensidade do que o pH.

  20. The Danish Testicular Cancer database.

    Science.gov (United States)

    Daugaard, Gedske; Kier, Maria Gry Gundgaard; Bandak, Mikkel; Mortensen, Mette Saksø; Larsson, Heidi; Søgaard, Mette; Toft, Birgitte Groenkaer; Engvad, Birte; Agerbæk, Mads; Holm, Niels Vilstrup; Lauritsen, Jakob

    2016-01-01

    The nationwide Danish Testicular Cancer database consists of a retrospective research database (DaTeCa database) and a prospective clinical database (Danish Multidisciplinary Cancer Group [DMCG] DaTeCa database). The aim is to improve the quality of care for patients with testicular cancer (TC) in Denmark, that is, by identifying risk factors for relapse, toxicity related to treatment, and focusing on late effects. All Danish male patients with a histologically verified germ cell cancer diagnosis in the Danish Pathology Registry are included in the DaTeCa databases. Data collection has been performed from 1984 to 2007 and from 2013 onward, respectively. The retrospective DaTeCa database contains detailed information with more than 300 variables related to histology, stage, treatment, relapses, pathology, tumor markers, kidney function, lung function, etc. A questionnaire related to late effects has been conducted, which includes questions regarding social relationships, life situation, general health status, family background, diseases, symptoms, use of medication, marital status, psychosocial issues, fertility, and sexuality. TC survivors alive on October 2014 were invited to fill in this questionnaire including 160 validated questions. Collection of questionnaires is still ongoing. A biobank including blood/sputum samples for future genetic analyses has been established. Both samples related to DaTeCa and DMCG DaTeCa database are included. The prospective DMCG DaTeCa database includes variables regarding histology, stage, prognostic group, and treatment. The DMCG DaTeCa database has existed since 2013 and is a young clinical database. It is necessary to extend the data collection in the prospective database in order to answer quality-related questions. Data from the retrospective database will be added to the prospective data. This will result in a large and very comprehensive database for future studies on TC patients.

  1. Atividade da enzima acetil-hidrolase do fator ativador de plaquetas (PAF-AH em pacientes com diabete melito tipo 1 Platelet-activating factor acetylhydrolase (PAF-AH activity in patients with type 1 diabetes mellitus

    Directory of Open Access Journals (Sweden)

    Simone Henriques de Castro

    2007-02-01

    Full Text Available OBJETIVO: Avaliar a atividade da acetil-hidrolase do fator ativador de plaquetas (PAF-AH e sua relação com variáveis clinicodemográficas, com o controle metabólico, os níveis de apolipoproteínas A e B e a suscetibilidade da lipoproteína de baixa densidade (LDL à oxidação in vitro em pacientes com DM tipo 1 (DM 1. MÉTODOS: Foram avaliados 42 pacientes com DM1 (27 mulheres e 48 não-diabéticos (16 mulheres, pareados por sexo, idade e índice de massa corporal (IMC. Os exames realizados foram: glicemia de jejum (GJ e pós-prandial (GPP, lipidograma, ácido úrico (AU, hemoglobina glicosilada (HbA1c e coeficiente de oxidação da lipoproteína de baixa densidade (LDL por espectrofotometria. A análise da atividade da PAF-AH foi realizada por espectrofotometria (Cayman Chemical. RESULTADOS: A análise da atividade da PAF-AH mostrou haver maior atividade enzimática nos pacientes com DM 1 do que nos não-diabéticos (0,0150 ± 0,0051 versus 0,0116 ± 0,0041; p OBJECTIVE: To evaluate platelet-activating factor acetylhydrolase (PAF-AH activity and its relationship with clinical and demographic variables, metabolic control, apolipoprotein A and B levels and the susceptibility of low-density lipoprotein (LDL to in vitro oxidation in patients with type 1 diabetes mellitus (DM 1. METHODS: Forty two patients with DM 1 (27 females and 48 control subjects (16 females matched for gender, age and body mass index (BMI were evaluated. The following tests were performed: fast plasma glucose (FG and postprandial plasma glucose (PPG, lipid profile, uric acid (UA, glycosylated hemoglobin (HbA1c, and low-density lipoprotein (LDL oxidation rate using colorimetric assay. The PAF-AH activity was analyzed using colorimetric assay (Cayman Chemical. RESULTS: The analysis of PAF-AH activity showed a higher enzyme activity in patients with DM 1 than in control subjects (0.0150 ± 0.0051 vs. 0.0116 ± 0.0041; p < 0.001. In patients with DM 1, a direct correlation

  2. Efecto del extracto etanólico de la tara sobre el estrés oxidativo y enzimas marcadoras de daño hepático en un modelo animal

    OpenAIRE

    Valdivieso, Rubén; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM; Oré, Raquel; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM.; Oriondo, Rosa; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM.; Arnao, Inés; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM.; Huerta, Doris; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM.; Arias, Clever; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM.; González, Rocío; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM.; Rodrigo, María; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM.; Cañari, Jorge; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM.

    2013-01-01

    Objetivos: Determinar el daño oxidativo en suero y la toxicidad hepática tras la ingesta del extracto etanólico de la Cesalpinia spinosa (tara), en un modelo animal. Diseño: Estudio experimental, transversal. Institución: Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM. Material biológico: Ratas machos, extracto del fruto de la tara, molida y seca. Intervenciones: Se formó 5 grupos de 6 ratas cada uno, de 250 g aproximadamente. Se les administró el extracto de t...

  3. Efeito da adição de aminoácidos essenciais à dieta sobre a secreção de enzimas digestivas de jundiá Rhamdia quelen (Siluriformes, Pimelodidae = Effect of dietary essential amino acids addition on digestive enzime secretion in silver catfish Rhamdia quelen (Siluriformes, Pimelodidae

    Directory of Open Access Journals (Sweden)

    Alexandre Bernardini Ungar

    2009-01-01

    Full Text Available Em estudos realizados com variação no teor de proteína na ração para peixes, foi demonstrado o aumento das atividades de protease alcalina, protease ácida, tripsina e quimiotripsina do trato digestório de jundiá (Rhamdia quelen. Esses fatos sugerem que produtos liberados pela digestão na luz desse trato podem influenciar a síntese e a secreção de enzimas digestivas. A secreção destas enzimas pelo pâncreas, em vertebrados, responde à influência neurale humoral. No presente trabalho, foram testadas quatro concentrações (0, 3, 6 e 12% de uma mistura de aminoácidos (treonina, fenilalanina, leucina, valina, arginina e triptofano em iguaisproporções em dietas isocalóricas contendo 3.500 kcal de energia digestível kg-1 de ração, e dietas isoproteicas contendo 20% de proteína, em juvenis de jundiá. Foram utilizados dez animais portratamento, sendo os peixes estocados num sistema fechado com recirculação de água e temperatura controlada. Os peixes submetidos a estes tratamentos apresentaram atividade da protease alcalina na região anterior do intestino, responsiva aos diferentes níveis aminoácidos da alimentação. Todavia, as atividades protease alcalina do fígado e amilase do fígado e intestino anterior não foram detectadas. Estes resultados sugerem que a atividade protease alcalina do intestino anterior seja induzida por aminoácidos liberados na luz do trato digestório. Studies carried out with variation of protein concentration in the fish feed have shown an increase in the activity of alkaline proteases, acid proteases, trypsin and chimotrypsin from the digestive tract of silver catfish (Rhamdia quelen. These facts suggest that products released by digestion in the lumen of this tract can influenced the synthesis and secretion of digestive enzymes. The secretion of these enzymes by the pancreas in vertebrate responses to neural and humoral influences. In the present study, four concentration (0, 3, 6 and 12% of

  4. Efeitos da farinha de folhas de mandioca sobre a atividade das enzimas AST, ALT, FA e lipídios hepáticos de ratos Wistar Effects of cassava leaves flour on the AST, ALT, ALP enzymes activity and hepatic lipids of Wistar rats

    Directory of Open Access Journals (Sweden)

    Daniela Séfora de Melo

    2008-12-01

    Full Text Available Folhas de mandioca possuem substâncias como ligninas e saponinas que podem apresentar efeito hipolipidêmico. Todavia, um estudo recente relatou aumento no peso do fígado de ratos alimentados com dietas contendo farinha de folhas de mandioca (FFM - Manihot esculenta Crantz cv. Cacao, tornando-se necessário um estudo mais aprofundado dos efeitos desta farinha sobre os parâmetros hepáticos. Para este estudo, um ensaio biológico com 32 ratos machos Wistar foi conduzido por um período de 7 semanas, sendo os tratamentos: dieta controle e dietas contendo 5, 10 e 15% de FFM. As dietas contendo FFM não apresentaram efeitos sobre as atividades das enzimas Aspartato Aminotransferase (AST e Fosfatase Alcalina (FA, mas aumentaram significativamente a atividade da enzima alanina aminotransferase (ALT. O estudo histopatológico revelou vacuolização do citoplasma dos hepatócitos para todos os grupos. No entanto, a freqüência de animais com vacuolização acentuada foi superior nos grupos que receberam dietas com FFM, apresentando também maiores teores de lipídios e colesterol total hepáticos e maior relação peso fígado/peso corporal. Estes resultados indicam que os antinutrientes presentes nas folhas de mandioca, como taninos, cianeto e saponinas, podem ser responsáveis pela redução da função hepática nos animais alimentados com FFM.Cassava leaves contain substances such as lignins and saponins that can present the hypolipidemic effect. However, a recent study has reported an increase in liver weight of rats fed diet containing cassava leaves flour (CLF - Manihot esculenta Crantz cv. Cacao. Thus, a further study of the effect of this flour on the hepatic parameters is necessary. For the development of this study, a biological assay with 32 male Wistar rats was conducted for a period of 7 weeks with the following treatments: control diet and diets containing 5, 10, and 15% of CLF. The diets containing CLF showed no effects on the

  5. Alternativas de uso da borra de café através de hidrólise ácida, enzimática, ou como substrato para a produção das enzimas: lacase e celulase

    OpenAIRE

    De Angeli, Diego Sorge

    2015-01-01

    Na produção industrial de café solúvel, grandes quantidades de resíduo de borra de café são geradas. Em média, para cada tonelada de café verde, 480kg de borra é produzida. Este um resíduo sólido, usado atualmente para gerar energia nas caldeiras da indústria de café solúvel, ou também como adubo na agricultura. Buscando um melhor aproveitamento, este trabalho objetivou estudar a viabilidade de hidrolisar a borra de café para a produção de carboidratos. A hidrólise foi promovida com ácido clo...

  6. Guidelines on testicular cancer

    NARCIS (Netherlands)

    Albers, Peter; Albrecht, Walter; Algaba, Ferran; Bokemeyer, Carsten; Cohn-Cedermark, Gabriella; Horwich, Alan; Klepp, Olbjoern; Laguna, M. Pilar; Pizzocaro, Giorgio

    2005-01-01

    To up-date the 2001 version of the EAU testicular cancer guidelines. A non-structured literature review until January 2005 using the MEDLINE database has been performed. Literature has been classified according to evidence-based medicine levels. Testicular cancer is a highly curable disease.

  7. Intermittent Testicular Torsion

    African Journals Online (AJOL)

    2017-12-05

    Dec 5, 2017 ... Objective: The aim of this study is to highlight the clinical characteristics of patients with intermittent testicular torsion and draw attention to this underreported condition. Methods: Clinical and demographic data of all patients treated for intermittent testicular torsion from January 2007 to June 2015 were ...

  8. Cold induced changes on sugar contents and respiratory enzyme activities in coffee genotypes Alterações dos teores de açúcares e da atividade de enzimas do metabolismo respiratório em genótipos de café submetidos ao frio

    Directory of Open Access Journals (Sweden)

    Fábio Luiz Partelli

    2010-04-01

    Full Text Available The present research aimed to characterize some biochemical responses of Coffea canephora (clones 02 and 153 and C. arabica (Catucaí IPR 102 genotypes subjected to low positive temperatures, helping to elucidate the mechanisms involved in cold tolerance. For that, one year old plants were subjected successively to 1 a temperature decrease (0.5°C a day from 25/20°C to 13/8°C (acclimation period, 2 a three day chilling cycle (3x13/4°C and to 3 a recovery period of 14 days (25/20°C. In Catucaí (less cold sensitive when compared to clone 02 there was an increased activity in the respiratory enzymes malate dehydrogenase and pyruvate kinase. Furthermore, Catucaí showed significant increases along the cold imposition and the higher absolute values after chilling exposure of the soluble sugars (sucrose, glucose, fructose, raffinose, arabinose and mannitol that are frequently involved in osmoregulation and membrane stabilization/protection. The analysis of respiratory enzymes and of soluble sugar balance may give valuable information about the cold acclimation/tolerance mechanisms, contributing to a correct selection and breeding of Coffea sp. genotypes.A pesquisa teve por objetivo caracterizar respostas bioquímicas de genótipos de Coffea canephora (clones 02 and 153 e C. arabica (Catucaí IPR 102 submetidos a baixas temperaturas positivas, ajudando a elucidar os mecanismos envolvidos na tolerância ao frio. Plantas com um ano de idade foram submetidas sucessivamente a 1 decréscimo da temperatura (0,5°C por dia desde 25/20°C até 13/8°C (período de aclimatização, 2 um ciclo de três dias a 13/4°C e 3 14 dias de recuperação (25/20°C. Em Catucaí, genótipo menos sensível ao frio quando comparado com o clone 02, observou-se um aumento das atividades das enzimas malato desidrogenase e piruvate cinase, relacionadas com a respiração. Nesse genótipo, os níveis de açúcares solúveis sacarose, glucose, frutose, rafinose, arabinose e

  9. Avaliação fenotípica da enzima Klebsiella pneumoniae carbapenemase (KPC em Enterobacteriaceae de ambiente hospitalar Phenotypic research on Klebsiella pneumoniae carbapenemase (KPC enzyme in Enterobacteriaceae from hospitals

    Directory of Open Access Journals (Sweden)

    Rosabel Dienstmann

    2010-02-01

    Full Text Available INTRODUÇÃO E OBJETIVO: A resistência bacteriana é problema frequente e importante no ambiente nosocomial. Nesse contexto, várias bactérias apresentam habilidade de desenvolver mecanismos de resistência enzimáticos, destacando-se as Enterobacteriaceae. Nesta família de microrganismos, a produção de Klebsiella pneumoniae carbapenemase (KPC é um mecanismo emergente, o que justifica sua vigilância constante. MATERIAL E MÉTODO: Este trabalho pesquisou o fenótipo de KPC em 30 isolados clínicos de enterobactérias resistentes a cefalosporinas de terceira geração e sensibilidade diminuída a carbapenem oriundas de dois hospitais (em Porto Alegre e na Grande Porto Alegre, RS. Realizou-se discodifusão com imipenem, meropenem e ertapenem, e 14 cepas com halo INTRODUCTION AND OBJECTIVE: Bacterial resistance is a frequent and important problem in the nosocomial environment. In this context, several bacteria have the ability to develop mechanisms of enzymatic resistance, mainly Enterobacteriaceae. In this family of microorganisms, the production of Klebsiella pneumoniae carbapenemase (KPC is an emerging mechanism, which should be under constant observation. MATERIAL AND METHOD: This study investigated the phenotype of KPC in 30 clinical isolates of Enterobacteriaceae resistant to third generation cephalosporin and carbapenem from two hospitals (Porto Alegre city and Porto Alegre, RS. It was performed disk diffusion method with imipenem, meropenem and ertapenem. Additionally, 14 strains with halo < 22 mm for the last antimicrobial agent underwent modified Hodge test. RESULTS: No sample showed carbapenemase (Hodge negative. DISCUSSION: Despite the fact there was no carbapenemase, resistance to carbapenems is possibly attributed to the presence of beta-lactamases AmpC and/or ESBL associated with changes in the permeability of porin channels. CONCLUSION: Given the emerging nature of KPC, it is important to trace it in Enterobacteriaceae

  10. Genetic diversity among Botryosphaeria isolates and their correlation with cell wall-lytic enzyme production Diversidade genética entre isolados de Botryosphaeria e correlação com a produção de enzimas líticas da parede celular

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    Roze L. Saldanha

    2007-06-01

    Full Text Available Nine isolates of Botryosphaeria spp. were evaluated for their growth and the production of cell wall-lytic enzymes (laccase, pectinase and beta-1,3-glucanase when grown on basal medium in the absence and presence of the laccase inducer, veratryl alcohol (VA. The genetic relationship among the nine isolates collected from different host plants was determined by RAPD analyses. ITS sequence analysis showed eight closely related isolates classified as Botryosphaeria rhodina, and one isolate classified as Botryosphaeria ribis. RAPD analysis resolved the isolates into three main clusters based upon levels of laccase and beta-1,3-glucanase activity. There appears to be no correlation between pectinase production and genetic diversity among the nine isolates. However, the strain characterized as B. ribis, positioned out of the main cluster, was found to be the highest producer of pectinases in the presence of VA.Nove isolados de Botryosphaeria spp foram avaliados quanto ao crescimento e produção de enzimas líticas da parede celular (lacase, pectinase e beta-1,3-glucanase quando cultivados em meio basal na ausência e presença do indutor de lacase álcool veratrílico (VA. As relações genéticas entre os nove isolados coletados de diferentes plantas hospedeiras foram determinadas por RAPD. A análise das seqüências de nucleotídeos da região ITS mostrou oito isolados estreitamente relacionados, os quais foram classificados como Botryosphaeria rhodina e um isolado como Botryosphaeria ribis. A análise por RAPD agrupou os isolados em três grupos principais condizentes com os níveis de atividades de lacase e beta-1,3-glucanase. Nenhuma correlação foi detectada entre a produção de pectinase e a diversidade genética nos nove isolados. Entretanto, a linhagem caracterizada como B. ribis, posicionada fora dos grupos principais, se mostrou maior produtora de pectinase na presença de álcool veratrílico.

  11. The Danish Testicular Cancer database

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    Daugaard G

    2016-10-01

    Full Text Available Gedske Daugaard,1 Maria Gry Gundgaard Kier,1 Mikkel Bandak,1 Mette Saksø Mortensen,1 Heidi Larsson,2 Mette Søgaard,2 Birgitte Groenkaer Toft,3 Birte Engvad,4 Mads Agerbæk,5 Niels Vilstrup Holm,6 Jakob Lauritsen1 1Department of Oncology 5073, Copenhagen University Hospital, Rigshospitalet, Copenhagen, 2Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, 3Department of Pathology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, 4Department of Pathology, Odense University Hospital, Odense, 5Department of Oncology, Aarhus University Hospital, Aarhus, 6Department of Oncology, Odense University Hospital, Odense, Denmark Aim: The nationwide Danish Testicular Cancer database consists of a retrospective research database (DaTeCa database and a prospective clinical database (Danish Multidisciplinary Cancer Group [DMCG] DaTeCa database. The aim is to improve the quality of care for patients with testicular cancer (TC in Denmark, that is, by identifying risk factors for relapse, toxicity related to treatment, and focusing on late effects. Study population: All Danish male patients with a histologically verified germ cell cancer diagnosis in the Danish Pathology Registry are included in the DaTeCa databases. Data collection has been performed from 1984 to 2007 and from 2013 onward, respectively. Main variables and descriptive data: The retrospective DaTeCa database contains detailed information with more than 300 variables related to histology, stage, treatment, relapses, pathology, tumor markers, kidney function, lung function, etc. A questionnaire related to late effects has been conducted, which includes questions regarding social relationships, life situation, general health status, family background, diseases, symptoms, use of medication, marital status, psychosocial issues, fertility, and sexuality. TC survivors alive on October 2014 were invited to fill in this questionnaire including 160 validated questions

  12. Produção in vitro de enzimas extracelulares por fungos e sua relação com os sintomas descritos em planta hospedeira

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    Alice Elias

    2015-12-01

    Full Text Available RESUMOOs fungos fitopatogênicos habitantes de solo causam perdas econômicas em muitas culturas e são difíceis de serem controlados. Esses fungos podem ser agrupados pelos sintomas comuns que causam nas plantas, bem como pelas enzimas extracelulares que podem produzir. O objetivo do trabalho foi verificar a produção in vitro de enzimas extracelulares por fungos de solo e tentar relacionar essas enzimas com os sintomas que cada fungo causa em planta hospedeira. O ensaio foi delineado em esquema inteiramente casualizado, com dois fatores, sete fungos (Cylindrocladium spathiphylli, Rhizoctonia solani, Sclerotium rolfsii, Ceratocystis fimbriata, Sclerotinia sclerotiorum, Fusarium oxysporum f. sp. dianthi e Verticillium dahliae mais testemunha e seis enzimas (amilase, carboximetilcelulase, lipase, lacase, catalase e gelatinase com 10 repetições. Catalase e gelatinase foram mensuradas por escala de notas, enquanto que as demais pelo cálculo da área da coroa circular. O ensaio foi repetido e a análise foi realizada com os dados de dois ensaios. Os fungos que causam podridão na raiz ou no colo da planta apresentaram maior produção de lacase, enquanto os que causam obstrução, fendas ou até a destruição do sistema vascular demonstraram a prevalência da lipase.

  13. Mecanismos de regulación de la enzima ribonucleótido reductasa de Saccharomyces cerevisiae en respuesta a la deficiencia de hierro

    OpenAIRE

    Sanvisens Delgado, Nerea

    2013-01-01

    Mecanismos de regulación de la enzima ribonucleótido reductasa de Saccharomyces cerevisiae en respuesta a la deficiencia de hierro. Mantener un balance adecuado en los niveles de desoxirribonucleótidos trifosfato (dNTPs), precursores necesarios para la síntesis del DNA, es fundamental para preservar la estabilidad genómica y la viabilidad celular tanto durante la proliferación celular como en respuesta a daños en el DNA. La enzima ribonucléotido reductasa (RNR), responsable de la conversi...

  14. Influência da adubação potássica na produção e na atividade de enzimas pós-colheita em escarola (Cichorium endivia L. / Influence of potassium fertilization in endive (Cichorium endiviaL. production and enzyme post-harvest activity

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    Paulo Sérgio Pavinato

    2009-12-01

    Full Text Available ResumoO potássio é um dos nutrientes mais abundantes no citoplasma das células vegetais, e sua alta contribuição no metabolismo das plantas está relacionada ao controle osmótico das células e à ativação de inúmeras enzimas. Sendo de conhecimento que a produção e manutenção da qualidade pós-colheita de sementes, frutos e hortaliças depende da boa nutrição potássica, o presente trabalho teve por objetivo avaliar o efeito de doses de potássio na produção e qualidade pós-colheita de escarola. A escarola, variedade Malan, foi cultivada em vasos com capacidade de 10 kg de solo, em casa de vegetação, na Fazenda Experimental Lajeado, Departamento de Produção Vegetal/Horticultura da FCA-UNESP, Botucatu-SP. Os tratamentos consistiram em cinco doses de potássio, correspondentes a 0, 75, 150, 300 e 600 kg ha-1 de K2O, aplicadas 1/3 no plantio e o restante em três coberturas (8, 16 e 28 dias após o transplante. Por ocasião do transplante, aplicou-se a adubação nitrogenada e fosfatada recomendadas para a cultura. Aos 35 dias após o transplante, as plantas foram colhidas e se efetuaram as avaliações de diâmetro de cabeça, massa fresca e área foliar. Ainda utilizando plantas frescas, determinou-se a atividade das enzimas polifenol oxidase e peroxidase. Em plantas secas, em estufa a 60°C por 72 h, foram determinadas a massa seca, o teor de K no tecido e o acúmulo total de proteínas. De maneira geral, a aplicação de 150 kg ha-1 de K2O, correspondente à dose recomendada pelos boletins de adubação para a escarola, resultou em máxima produção e qualidade pós-colheita, não respondendo a doses mais elevadas.AbstractPotassium is one of the nutrients that is present in higher levels in the cytoplasm of plant cells, and its contribution in plant metabolism is related to cell osmotic regulation and the activation of many enzymes. Given the knowledge that production and post-harvest quality maintenance of seeds, fruit

  15. Testicular dysgenesis syndrome

    DEFF Research Database (Denmark)

    Skakkebaek, N E; Rajpert-De Meyts, E; Main, K M

    2001-01-01

    summarizes existing evidence supporting a new concept that poor semen quality, testis cancer, undescended testis and hypospadias are symptoms of one underlying entity, the testicular dysgenesis syndrome (TDS), which may be increasingly common due to adverse environmental influences. Experimental...

  16. Testicular torsion repair

    Science.gov (United States)

    ... male growth, sex life, and fertility. Patient Instructions Surgical wound care - open Images Male reproductive anatomy Testicular torsion repair - series References ... of the testes and scrotum and their surgical management. In: Wein AJ, ed. Campbell-Walsh Urology . ...

  17. Curious Cases of the Enzymes / Neobiča Istorija Enzima

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    Ulusu Nuriye Nuray

    2015-07-01

    Full Text Available : Život oko nas uglavnom se zasniva na biološkoj katalizi, pa bi se čak, u nekakvoj neromantičnoj priči, život mogao opisati kao niz hemijskih reakcija koje regulišu glavni principi termodinamike. U davnoj prošlosti, ku­canje srca bilo je znak dobrog zdravlja, međutim, za mene, najvažniju ulogu ima upravo prisustvo enzima... Mada ne obraćamo često pažnju na to, istorija enzimologije stara je koliko i sam ljudski rod i seže daleko u prošlost. CVaj rad posvećen je baš tim počecima u ovoj veoma zanimljivoj nauci, koja je u prošlosti ostavila traga na našim životima i koja će u budućnosti učiniti da život bude mnogo pro­duktivniji za čovečanstvo. Između čoveka i enzima postojao je oduvek jedan delikatan, suštinski važan odnos. Suočen s nepoznatom i neprijateljski nastrojenom prirodom punom grabljivaca, preistorijski čovek rano je otkrio lekovita svojstva biljaka, i to metodom probe i greške. Štaviše, slučajno su otkriveni inhibitori enzima, čime je, grubo rečeno, još tada otvorena nova oblast istraživanja. Oi biljni derivati koji su imali ulogu inhibitora enzima pomagali su preistorijskom čoveku u njegovoj borbi da opstane i zaštiti se od grabljiva­ca; prilikom lova i ribolova... Kasnije kroz istoriju, sa nepro- menjenom svrhom opstanka i poboljšanja kvaliteta života, enzimologija je iz korena transformisana, a metodologiju »probe i greške« iz praistorije zamenile su racionalne naučne teorije.

  18. Ação de inibidores de enzimas oxidativas e crescimento bacteriano sobre a longevidade das flores de ave-do-paraíso (Strelitzia reginae Aiton

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    Ana Ermelinda Marques

    2011-10-01

    Full Text Available Com o objetivo de avaliar a eficiência de inibidores das enzimas polifenoloxidase e peroxidase, além da participação do crescimento bacteriano nas hastes florais de ave-do-paraíso, soluções de vaso contendo inibidores das enzimas polifenoloxidase e peroxidase foram aplicadas em sistema de pulso. Foram feitos dois experimentos: no primeiro foram aplicados 2-mercaptoetanol 10 mM, catecol 5 mM, p-nitrofenol 5 mM, metabissulfito de sódio 10 mM e água destilada, sem a correção do pH, o segundo foi feito com os mesmos tratamentos acima, porém com o pH ajustado para 6,0. A atividade das enzimas oxidativas foi determinada a cada 48 horas até a senescência dos floretes, quando foi então avaliada a contagem total de bactérias presentes na porção basal da haste. O metabissulfito de sódio 10 mM resultou na maior redução da atividade das enzimas no segundo dia após a aplicação, comparado com os demais inibidores. Em todos os tratamentos, em ambos os experimentos, a população bacteriana foi elevada contribuindo para a obstrução física das hastes.

  19. Avaliação da celulase e pectinase como enzimas complementares, no processo de hidrólise-sacarificação do farelo de mandioca para produção de etanol Evaluation of the cellulase and pectinase by complementary enzymes in the process of hydrolysis-saccharification of cassava fibrous waste for alcohol production

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    Magali LEONEL

    1999-01-01

    Full Text Available Neste trabalho objetivou-se avaliar o uso de enzimas complementares no processo enzimático de hidrólise e sacarificação para a produção de etanol a partir do resíduo fibroso das fecularias. Os resultados obtidos demonstraram que 63,42% do amido foram hidrolisados no tratamento em que não se utilizaram enzimas complementares. No tratamento com as duas enzimas complementares foram hidrolisados 89,55%, no tratamento com celulase 65,42% e no tratamento com pectinase 88,73%. A prensagem do resíduo após o processo de hidrólise e sacarificação mostrou-se eficiente, ficando 10,43% do total de açúcares obtidos retidos no resíduo fibroso final. Portanto, o tratamento em que se utilizou a pectinase como enzima complementar na hidrólise foi o melhor. A celulase não apresentou efeito significativo no rendimento do processo.This work it was proposed to evaluate the use of complementary enzymes (cellulase and pectinase in the enzymatic process of hydrolysis-saccharification of the cassava fibrous waste for alcohol production. The results indicated that 63,42% of starch was hydrolyzed in the treatment without complementary enzymes, 89,55% in the treatment with the enzymes, 65,42% with the cellulase by complementary and 88,73% in the pectinase treatment. The pressing was efficacious for sugar recuperation and 10% of total sugar was retaining in the final fibrous residue. The pectinase was the better complementary enzyme enhance the yield.

  20. Testicular calculus: A rare case.

    Science.gov (United States)

    Sen, Volkan; Bozkurt, Ozan; Demır, Omer; Tuna, Burcin; Yorukoglu, Kutsal; Esen, Adil

    2015-01-01

    Testicular calculus is an extremely rare case with unknown etiology and pathogenesis. To our knowledge, here we report the third case of testicular calculus. A 31-year-old man was admitted to our clinic with painful solid mass in left testis. After diagnostic work-up for a possible testicular tumour, he underwent inguinal orchiectomy and histopathologic examination showed a testicular calculus. Case hypothesis: Solid testicular lesions in young adults generally correspond to testicular cancer. Differential diagnosis should be done carefully. Future implications: In young adults with painful and solid testicular mass with hyperechogenic appearance on scrotal ultrasonography, testicular calculus must be kept in mind in differential diagnosis. Further reports on this topic may let us do more clear recommendations about the etiology and treatment of this rare disease.

  1. Inguinal metastases from testicular cancer

    DEFF Research Database (Denmark)

    Daugaard, Gedske; Karas, Vladimir; Sommer, Peter

    2006-01-01

    To evaluate the incidence of inguinal metastases in patients with testicular cancer and relapse after initial stage I disease.......To evaluate the incidence of inguinal metastases in patients with testicular cancer and relapse after initial stage I disease....

  2. Avaliação de métodos para manutenção e preservação de bactéria esporulada produtora da enzima CGTase - DOI: 10.4025/actascihealthsci.v31i2.6910 Evaluation of methods for maintenance and preservation of sporulating bacteria producer of CGTase enzyme- DOI: 10.4025/actascihealthsci.v31i2.6910

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    Cristiane Moriwaki

    2009-09-01

    Full Text Available A conservação de células sem mudanças morfológicas, fisiológicas ou genéticas é uma necessidade da biotecnologia. Bacillus firmus cepa 37 é uma bactéria esporulada produtora da enzima ciclodextrina glicosiltransferase (CGTase, que transforma o amido em ciclodextrinas (CDs. O objetivo deste estudo foi avaliar a manutenção e preservação de B. firmus cepa 37 estocada em meio de cultivo sólido, solo estéril e em glicerol a baixa temperatura (-70ºC. Para avaliação do melhor método de manutenção da bactéria foram utilizados procedimentos de imobilização das células em matrizes inorgânicas. As células imobilizadas foram submetidas ao teste do efeito da biomassa inicial e à microscopia eletrônica de varredura (MEV. O repique não foi um método adequado, pois a cepa diminuiu a produção de CGTase. A estocagem em solo estéril mostrou-se eficaz e a produção da enzima mantida constante. A conservação a baixas temperaturas também foi satisfatória, com contagem de células praticamente a mesma após 360 dias. A imobilização, avaliada por MEV, não mostrou diferença na adsorção das células conservadas pelos diferentes métodos. O mesmo ocorreu para o teste do efeito da biomassa inicial, que apresentou maior produção de beta-CD quando do uso de 1,5 g de células.The conservation of cells without morphologic, physiologic or genetic changes is a biotechnology necessity. Bacillus firmus strain 37 is a sporulating bacteria that produces the cyclodextrin glycosyltransferase (CGTase enzyme, which transforms starch into cyclodextrins (CDs. This study aimed to evaluate the maintenance and preservation of B. firmus strain 37 stored in a solid medium, sterile soil and in glycerol at low temperature (-70ºC. In order to evaluate the best bacteria maintenance method, cell immobilization procedures were used on inorganic matrices. The immobilized cells were submitted to the initial biomass effect test and scanning electron

  3. Varicocele and testicular function

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    Alexander W Pastuszak

    2015-01-01

    Full Text Available Testicular varicocele, a dilation of the veins of the pampiniform plexus thought to increase testicular temperature via venous congestion, is commonly associated with male infertility. Significant study has clarified the negative impact of varicocele on semen parameters and more recent work has shed light on its detrimental effects on the molecular and ultrastructural features of sperm and the testicular microenvironment, as well as more clearly defined the positive impacts of treatment on couples′ fertility. The relationship between varicocele and testicular endocrine function, while known for some time based on histologic evaluation, has become more apparent in the clinical setting with a growing link between varicocele and hypogonadism. Finally, in the pediatric setting, while future study will clarify the impact of varicocele on fertility and testicular function, recent work supports a parallel effect of varicocele in adolescents and adults, suggesting a re-evaluation of current treatment approaches in light of the progressive nature of the condition and potential increased risk of future disease.

  4. Produção de proteases por Bacillus sp SMIA-2 crescido em soro de leite e água de maceração de milho e compatibilidade das enzimas com detergentes comerciais

    OpenAIRE

    Nascimento, Wellingta Cristina Almeida do; Martins, Meire Lelis Leal

    2006-01-01

    A produção de proteases por Bacillus sp. SMIA-2 cultivado em um meio de cultura contendo soro de leite e água de maceração de milho foi estudada. Além disso, a compatibilidade da enzima com detergentes comerciais foi também avaliada. A atividade máxima da enzima (70 U/mg proteína) foi observada na fase estacionária de crescimento, com 32 h de incubação. Estudos sobre a caracterização da protease revelaram que a temperatura ótima para atividade desta enzima foi 70 °C e que a mesma manteve 91% ...

  5. Produção de proteases por Bacillus sp SMIA-2 crescido em soro de leite e água de maceração de milho e compatibilidade das enzimas com detergentes comerciais

    OpenAIRE

    Nascimento,Wellingta Cristina Almeida do; Martins,Meire Lelis Leal

    2006-01-01

    A produção de proteases por Bacillus sp. SMIA-2 cultivado em um meio de cultura contendo soro de leite e água de maceração de milho foi estudada. Além disso, a compatibilidade da enzima com detergentes comerciais foi também avaliada. A atividade máxima da enzima (70 U/mg proteína) foi observada na fase estacionária de crescimento, com 32 h de incubação. Estudos sobre a caracterização da protease revelaram que a temperatura ótima para atividade desta enzima foi 70 °C e que a mesma manteve ...

  6. Effect of glutamine on the mRNA level of key enzymes of malate-aspartate shuttle in the rat intestine subjected to ischemia reperfusion Efeito da glutamina sobre o nível de RNA Mensageiro das enzimas-chave do ciclo malato-aspartato no intestino de ratos submetidos à isquemia e reperfusão

    Directory of Open Access Journals (Sweden)

    Paulo Roberto Cavalcante de Vasconcelos

    2011-01-01

    caseinato de cálcio, 0,5 g/kg (subgrupos A1, A4, B1 e B4, L-Gln, 0,5 g/kg (subgrupos A2, A5, B2 e B5 ou L-Ala -Gln, 0,75g/kg (subgrupos A3, A6, B3, B6, administrado por gavagem. A isquemia foi obtida por pinçamento dos vasos mesentéricos, delimitando um segmento do intestino cinco centímetros de comprimento e 5 cm da válvula ileocecal. Amostras foram coletadas aos 30-60 minutos para ensaio de PCR em tempo real das enzimas malato desidrogenases (MDH1-2, aspartato-aminotransferase (GOT1-2. RESULTADOS: A expressão de MDH e GOT mRNA nas amostras provenientes do intestino delgado de ratos pré-condicionados com L-Gln ou L-Ala-Gln não apresentou diferenças significativas, tanto durante a isquemia como na fase inicial de reperfusão. CONCLUSÃO: Ativação do ciclo malato-aspartato não parece ser o mecanismo de elevação glutamina-mediada da oxidação da glicose no intestino de ratos durante a isquemia / reperfusão.

  7. Atividade da rubisco e das enzimas de síntese de hidrólise de sacarose, associada à produtividade de látex , em clones de seringueira [ Havea brasiliensis (Willd ex. Adr. de Juss. Muell.-Arg] cultivados em Lavras, MG Activity of rubisco and enzymes of sucrose synthesis and hydrolysis associated to latex productivity, in rubber tree clones [Hevea brasiliensis (Willd ex. Adr. de Juss. Muell.-Arg] cultivated in Lavras, MG

    Directory of Open Access Journals (Sweden)

    Paulo Araquém Ramos Cairo

    2009-04-01

    Full Text Available Estudos já realizados sobre clones de seringueira cultivados no estado de Minas Gerais têm fornecido indícios que permitem supor a existência de uma possível associação entre a variabilidade fotossintética e a produção de látex. Contudo, ainda é escasso o conhecimento acerca da assimilação de CO2 e o transporte de carbono das folhas até a casca, onde a biossíntese de látex ocorre de forma mais intensa. Em todas as etapas desses metabolismos, as reações são reguladas por algumas enzimas-chave. Este trabalho propôsse a avaliar a atividade da Rubisco e das principais enzimas de síntese e hidrólise de sacarose, em plantas de um jardim clonal de seringueira pertencentes aos clones RRIM 600, GT 1 e FX 2261, e sua relação com o desempenho produtivo de plantas adultas e em franca produção. Os resultados sugeriram uma provável associação entre a atividade da Rubisco e das invertases (ácida e neutra e o desempenho produtivo dos clones. Não houve evidências de tal associação, em relação à sacarose-fosfato sintase (SPS e à sacarose sintase (SuSy, cujas atividades não diferiram entre os clones avaliados. A hidrólise de sacarose na casca foi exercida predominantemente pela ação da invertase ácida. Em proporções menores e equivalentes, essa atividade foi complementada pela SuSy e pela invertase neutra.Previous researches on rubber tree clone cultivation in Minas Gerais state have provided evidences for a possible association between photosynthetic variability and latex production. Nevertheless, knowledge about the CO2 assimilation and carbon transport from leaves to bark, where the latex biosynthesis is higher, is still scarce. In all steps of these metabolisms, the reactions are regulated by some key enzymes. The aim of this work was to evaluate the Rubisco and the main enzymes of sucrose synthesis and hydrolysis activities in rubber tree plants from a clonal garden, identified as RRIM 600, GT 1, and FX 2261

  8. Inmovilización de enzima fosfolipasa A2

    Directory of Open Access Journals (Sweden)

    Camusso, C.

    2000-06-01

    Full Text Available A series of several supports were tested for phospholipase A2 enzyme (Lecitase 100 S- NOVO immobilization. This system would find a number of industrial applications such as the selective hydrolysis of soybean lecithin to obtain lysophospholipids (modified lecithins of great importance in pharmaceuticals and bread making. Successful results have been obtained from the immobilization of Phospholipase A2 on Alumina, Silica gel, Amberlite IRA-400S, Dowex and Sephadex A-25 via adsorption (the results were in the range 15-30 % of enzyme adsorption. The immobilization reaction was carried out at ambient temperature, with slow magnetic agitation such that the enzyme and 50 mg support were present in the total reaction volume of 5 ml in Tris-ClH buffer (pH 8.65. Several enzyme/supports ratio and the adsorption percentage with respect to pH and temperature and time were investigated. We have compared the behaviour of the phospholipase A2 in soluble form and immobilized form toward pure powder soybean lecithin as substrate.Se investigaron varios soportes para la inmovilización de fosfolipasa A2 (Lecitase 100 S-NOVO, en un sistema que podría encontrar aplicaciones industriales tales como en la hidrólisis selectiva de Lecitina de soja para obtener lisofosfolípidos (lecitinas modificadas de gran importancia en las industrias farmacéuticas y de la panificación. Se obtuvo adsorción de enzima sobre Alumina, Silica gel, Amberlita IRA-400S, Dowex y Sephadex A-25 (los resultados indican entre un 15 y 30 % de adsorción de enzima. La reacción de inmovilización fue efectuada a temperatura ambiente con agitación magnética suave de tal manera que el soporte, 50 mg, y la enzima fueron mantenidos en un volumen total de 5 ml de buffer Tris-ClH (pH 8,65. Se efectuaron las inmovilizaciones con varias relaciones enzima-soporte y se determinó el porcentaje de adsorción con respecto al pH, la temperatura y el tiempo. Se comparó la actividad de la enzima

  9. Testicular germ cell tumors.

    Science.gov (United States)

    Diamantopoulos, N; Kortsaris, A

    2010-01-01

    Testicular cancer is the most frequent solid tumor in young male adults and a disease with elusive pathogenesis. Germ cell tumors represent 95% of all testicular cancers. There was an increasing incidence of testicular germ cell tumors during the second half of the 20th century. Despite their increased incidence, mortality is lower than 10% and the cure rate has reached 95%. Epidemiology of the disease shows remarkable geographic and racial variation. Known risk factors and the increased incidence during the last 50 years have led to the development of the two prevalent theories for the pathogenesis of the disease, Henderson theory and Rajpertde Meyts and Skakkebaek theory. Appropriate diagnosis and staging of the disease are crucial for successful management. Testicular ultrasound, CT scans, histological examination and serum tumor markers should be utilized in order to stratify the patient correctly. Treatment strategy is chosen according to the patient stage and prognostic group stratification. "Fine tuning" is needed in order to find the balance between treatment, cure and toxicity. Despite progress in therapeutic management, cure rates for poor risk patients do not exceed 50%. These patients should be encouraged to participate in clinical trials. Long-term toxicity of testicular germ cell tumors' treatment is also another issue that should be kept in mind during follow-up of these patients. This disease became the model of "curable" cancer and gave hope for cure of metastatic malignant diseases in general, as only 400 patients die from this disease in USA annually. More progress will be made only through well-designed clinical trials.

  10. EFEITO DE ENZIMAS FIBROLÍTICAS SOBRE A COMPOSIÇÃO BROMATOLÓGICA DE SILAGENS DE CAPINS TROPICAIS

    Directory of Open Access Journals (Sweden)

    Cirano José Ulhoa

    2006-10-01

    Full Text Available Este trabalho foi desenvolvido para determinar o efeito de níveis de enzimas fibrolíticas sobre a composição bromatológica e a degradabilidade ruminal da MS e da FDN das silagens de capim-braquiária e de capim-tanzânia. O experimento consistiu de quatro níveis enzimáticos (0, 5, 10e 20 mg de enzimas por kg de matéria natural e dois períodos de armazenamento (45 e 120 dias e três repetições. Após o armazenamento, os silos experimentais foram abertos para avaliação dos teores da MS, da PB, da FDN, do N-NH3/NT e do pH. Utilizou-se a técnica do saco de náilon,com três bovinos canulados no rúmen, horários de incubação de 6, 24 e 96 horas e amostras do período de 45 dias de ensilagem. Verificou-se que as soluções enzimáticas não alteraram o teor de MS, PB, N-NH3/NT e pH das silagens de capins. Para o capim-braquiária, a solução enzimática alterou o teor da FDN, mas foi dependente do nível de enzimas.Verificou-se redução da FDN para o nível de 20 mg (67,99% em relação ao tratamento-testemunha (70,28%. Não houve diferença entre os períodos de armazenamento nem interação entre período de armazenamento e nível enzimático. Para os parâmetros de degradação ruminal da MS e da FDN das silagens de capins não foram observadas diferenças entre os tratamentos. PALAVRAS-CHAVE: Aditivos, celulases, degradabilidade, hemicelulases, parede celular

  11. Testicular Damage following Testicular Sperm Retrieval

    DEFF Research Database (Denmark)

    Fedder, Jens; Marcussen, Niels; Fedder, Maja D.K.

    2017-01-01

    The aim of this study was to evaluate the possible development of histological abnormalities such as fibrosis and microcalcifications after sperm retrieval in a ram model. Fourteen testicles in nine rams were exposed to open biopsy, multiple TESAs, or TESE, and the remaining four testicles were...... left unoperated on as controls. Three months after sperm retrieval, the testicles were removed, fixed, and cut into 1/2 cm thick slices and systematically put onto a glass plate exposing macroscopic abnormalities. Tissue from abnormal areas was cut into 3 μm sections and stained for histological...... evaluation. Pathological abnormalities were observed in testicles exposed to sperm retrieval (≥11 of 14) compared to 0 of 4 control testicles. Testicular damage was found independently of the kind of intervention used. Therefore, cryopreservation of excess sperm should be considered while retrieving sperm....

  12. Clonagem do cDNA que codifica a enzima UDP-glicose pirofosforilase de batata (Solanum tuberosum L.).

    OpenAIRE

    Gunta Gutmanis

    2004-01-01

    A biotecnologia está revolucionando a atividade humana nas mais diversas áreas. No setor florestal, as novas tecnologias como transgenia, genômica, proteômica e bioinformática, estão sendo rapidamente incorporadas. A associação dessas tecnologias aos programas de melhoramento convencional de árvores pode acelerar o processo de obtenção de árvores com características específicas da madeira para a indústria de papel e celulose. UDP–glicose pirofosforilase (UGPase, EC 2.7.7.9) é uma enzima ...

  13. Testicular biopsy in prepubertal boys

    DEFF Research Database (Denmark)

    Faure, Alice; Bouty, Aurore; O'Brien, Mike

    2016-01-01

    No consensus exists regarding the precise role of testicular biopsy in prepubertal boys, although it is considered useful for assessing the potential consequences of undescended testes on fertility. Current scientific knowledge indicates that surgeons should broaden indications for this procedure...... for the preservation of fertility after gonadotoxic chemotherapy - even for prepubertal boys - are emerging. Cryopreservation of testicular tissue samples for the preservation of fertility - although still an experimental method at present - is appealing in this context. In our opinion, testicular biopsy...

  14. Proteção funcional da enzima heme-oxigenase-1 na lesão renal aguda isquêmica e tóxica Protección funcional de la enzima heme-oxigenasa-1 en la lesión renal aguda isquémica y tóxica Functional protection of heme-oxygenase-1 enzyme in ischemic and toxic acute kidney injury

    Directory of Open Access Journals (Sweden)

    Cassiane Dezoti

    2009-01-01

    Full Text Available OBJETIVOS: Verificar a proteção funcional da heme-oxigenase (HO-1, por meio do uso do seu indutor (Hemin e seu inibidor químico (protoporfirina de zinco-ZnPP na lesão renal aguda isquêmica e tóxica pela Polimixina B (PmxB em ratos. MATERIAL: Foram utilizados ratos Wistar, adultos e machos divididos em 8 grupos: SHAM (controle, Isquemia (Isq, Isq+Hemin (indutor de HO-1, Isq+ZnPP (inibidor de HO-1, SALINA (controle, Polimixina B (PmxB, PmxB+Hemin, PmxB+ZnPP. MÉTODOS: Jaffé (clearance de creatinina, Clcr e FOX-2 (peróxidos urinários. RESULTADOS: A isquemia (30´ dos pedículos reais e a administração de PmxB reduziu o Clcr com manutenção do fluxo urinário. Os peróxidos urinários se elevaram em ambas as lesões. A administração do Indutor de HO-1 determinou melhora da função renal e redução dos níveis de peróxidos urinários. CONCLUSÃO: Os resultados deste estudo demonstraram que a isquemia e a PmxB induzem LRA oxidativa. O indutor de HO-1 atenuou a lesão em ambos os modelos por atenuação do mecanismo redox.OBJETIVOS: Verificar la protección funcional de la heme-oxigenasa (HO-1, por medio del uso de su inductor (Hemin y su inhibidor químico (protoporfirina de zinc-ZnPP en la lesión renal aguda isquémica y tóxica producida por la Polimixina B (PmxB en ratas. MATERIAL: Fueron utilizadas ratas Wistar, adultas y machos divididos en 8 grupos: SHAM (control, Isquemia (Isq, Isq+Hemin (indutor de HO-1, Isq+ZnPP (inibidor de HO-1, SALINA (control, Polimixina B (PmxB, PmxB+Hemin, PmxB+ZnPP. MÉTODOS: Jaffé (clearance de creatinina, Clcr y FOX-2 (peróxidos urinarios. RESULTADOS: La isquemia (30´ de los pedículos reales y la administración de PmxB redujo el Clcr con manutención del flujo urinario. Los peróxidos urinarios se elevaron en ambas lesiones. La administración del Inductor de HO-1 determinó mejora de la función renal y reducción de los niveles de peróxidos urinarios. CONCLUSIÓN: Los resultados de este

  15. Efeito da adição de aminoácidos essenciais à dieta sobre a secreção de enzimas digestivas de jundiá Rhamdia quelen (Siluriformes, Pimelodidae - DOI: 10.4025/actascibiolsci.v31i1.822 Effect of dietary essential amino acids addition on digestive enzime secretion in silver catfish Rhamdia quelen (Siluriformes, Pimelodidae - DOI: 10.4025/actascibiolsci.v31i1.822

    Directory of Open Access Journals (Sweden)

    Alexandre Eneas Altran

    2009-04-01

    Full Text Available Em estudos realizados com variação no teor de proteína na ração para peixes, foi demonstrado o aumento das atividades de protease alcalina, protease ácida, tripsina e quimiotripsina do trato digestório de jundiá (Rhamdia quelen. Esses fatos sugerem que produtos liberados pela digestão na luz desse trato podem influenciar a síntese e a secreção de enzimas digestivas. A secreção destas enzimas pelo pâncreas, em vertebrados, responde à influência neural e humoral. No presente trabalho, foram testadas quatro concentrações (0, 3, 6 e 12% de uma mistura de aminoácidos (treonina, fenilalanina, leucina, valina, arginina e triptofano em iguais proporções em dietas isocalóricas contendo 3.500 kcal de energia digestível kg-1 de ração, e dietas isoproteicas contendo 20% de proteína, em juvenis de jundiá. Foram utilizados dez animais por tratamento, sendo os peixes estocados num sistema fechado com recirculação de água e temperatura controlada. Os peixes submetidos a estes tratamentos apresentaram atividade da protease alcalina na região anterior do intestino, responsiva aos diferentes níveis aminoácidos da alimentação. Todavia, as atividades protease alcalina do fígado e amilase do fígado e intestino anterior não foram detectadas. Estes resultados sugerem que a atividade protease alcalina do intestino anterior seja induzida por aminoácidos liberados na luz do trato digestório.Studies carried out with variation of protein concentration in the fish feed have shown an increase in the activity of alkaline proteases, acid proteases, trypsin and chimotrypsin from the digestive tract of silver catfish (Rhamdia quelen. These facts suggest that products released by digestion in the lumen of this tract can influenced the synthesis and secretion of digestive enzymes. The secretion of these enzymes by the pancreas in vertebrate responses to neural and humoral influences. In the present study, four concentration (0, 3, 6 and 12

  16. Correlação entre a incapacidade funcional, idade e enzimas séricas nas doenças neuromusculares

    Directory of Open Access Journals (Sweden)

    Lineu Cesar Werneck

    1995-03-01

    Full Text Available Foram estudados 806 casos de diversas doenças neuromusculares, a fim de verificar se existe correlação entre o grau de incapacidade funcional aferida pela escala de Vignos e Archibald (V&A e enzimas séricas (creatinoquinase, desidrogenase lática, aldolase, transaminase glutâmica oxalacética e pirúvica. Foram utilizados testes para a análise do coeficiente de correlação simples (Pearson e múltiplo. Foi encontrada correlação positiva (piora progressiva da incapacidade da V&A com a idade em algumas doenças, como a distrofia muscular de Duchenne, distrofia fascio-escapulo-umeral, distrofia miotônica, miopatias com defeitos enzimáticos da cadeia respiratória e esclerose lateral amiotrófica. Por outro lado, foi detectada correlação negativa (melhora progressiva dos sintomas na miopatia do multicore, miopatia benigna da infância com predomínio de fibras do tipo 1, deficiência de carnitina e dermatomiosite. A V&A mostrou maiores correlações (p< 0,05 entre as diversas enzimas sérícas quando estudadas isoladamente na distrofia muscular de Duchenne, distrofia óculo-crânio-somática, polimiositcs e periarterite nodosa. Quando as enzimas foram analisadas em conjunto, através de teste de correlação múltipla, verificou-se pequena correlação entre elas e a V&A. Esta reduzida interrelação sugere que a utilização de diversas enzimas na análise longitudinal das doenças neuromusculares é limitada, não tendo aplicação pratica, embora sejam muito importantes no diagnóstico.

  17. EFFECT OF A VITAMIN E AND SELENIUM ORAL SUPPLEMENTATION ON HEMATOLOGICAL PARAMETERS, MUSCULAR INJURIES MARKERS ENZYMES AND PEROXIDATION INDICES OF BIOMOLECULES IN SHOW JUMPING HORSES EFEITO DA SUPLEMENTAÇÃO COM VITAMINA E E SELÊNIO SOBRE O QUADRO HEMATOLÓGICO, ENZIMAS MARCADORAS DE LESÃO MUSCULAR E ÍNDICE DE PEROXIDAÇÃO DE BIOMOLÉCULAS EM EQUINOS SUBMETIDOS À ATIVIDADE DE SALTO

    Directory of Open Access Journals (Sweden)

    Domingos Cachineiro Rodrigues Dias

    2009-09-01

    , vitamin E.
    As alterações dos constituintes sanguíneos e o estresse oxidativo são mecanismos fisiopatológicos incriminados no aparecimento de lesões relacionadas ao exercício. Avaliou-se a influência da suplementação oral à base de ?-tocoferol (vitamina E e selênio sobre o quadro hematológico, bem como a atividade sérica de enzimas marcadoras de lesão muscular e o nível de substâncias derivadas da ação dos radicais livres sobre biomoléculas presentes na membrana de eritrócitos (TBARS de equinos normalmente treinados e submetidos à prova de hipismo clássico. Para isso, distribuíram-se vinte cavalos em dois grupos, sendo um suplementado com produto à base de vitamina E (2500 mg/dia e selênio (3 mg/dia por 45 dias (GT e outro mantido como controle (GC. Colheram-se amostras de sangue antes (TR e após (T0 a realização do exercício e seis (T6, doze (T12 e 24 horas (T24 após o término da atividade de esforço. Foram avaliados os constituintes do hemograma, a atividade sérica das enzimas CK, AST e LDH e a concentração TBARS na membrana de eritrócitos. A suplementação utilizada apresentou efeito sobre alguns parâmetros do hemograma, uma vez que no GT houve retorno aos níveis basais de número de hemácias e leucócitos, caracterizado por neutrofilia, em até seis horas. No GC, tais valores retornaram aos níveis de repouso entre 12 e 24 horas. Para a AST, o GT retornou ao valor do repouso seis horas após a realização do exercício. No entanto, não houve efeito sobre as enzimas CK e LDH, nem para o TBARS. Apesar de terem sido observadas diferenças na dinâmica de alguns parâmetros hematológicos entre os grupos, não foi possível determinar atividade antioxidante no GT no delineamento experimental utilizado, o que demonstra a necessidade de mais estudos para o entendimento do estresse oxidativo em cavalos atletas e a suplementação com antioxidantes na dieta desses animais.

    PALAVRAS-CHAVES: Cavalo atleta, estresse

  18. Las lipasas: enzimas con potencial para el desarrollo de biocatalizadores inmovilizados por adsorcion interfacial

    National Research Council Canada - National Science Library

    Gonzalez-Bacerio, Jorge; Rodriguez Hernandez, Jairo; del Monte Martinez, Alberto

    2010-01-01

    Las lipasas son enzimas con propiedades funcionales muy interesantes que permiten su utilizacion practica en diversos campos de las industrias agroquimica, farmaceutica, de detergentes y alimentaria...

  19. Influência do uso crônico dos inibidores da enzima conversora da angiotensina na hipotensão arterial após indução anestésica: é necessário suspender esse fármaco no pré-operatório? Influencia del uso crónico de los inhibidores de la enzima conversora de la angiotensina en la hipotensión arterial después de la inducción anestésica: ¿es necesario suspender ese fármaco en el preoperatorio? Influence of angiotensin-converting enzyme inhibitors on hypotension after anesthetic induction: is the preoperative discontinuation of this drug necessary?

    Directory of Open Access Journals (Sweden)

    Verônica Vieira da Costa

    2009-12-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Tem sido sugerida a suspensão de medicamentos como os inibidores da enzima conversora de angiotensina (IECA com base em relatos de hipotensão arterial durante a anestesia. Isso pode implicar em maior risco de picos hipertensivos no intraoperatório, com efeitos deletérios para o paciente. O objetivo deste estudo foi avaliar a influência dos IECA utilizados no pré-operatório na ocorrência de hipotensão arterial durante anestesia. MÉTODO: Delineamento tipo caso controle, onde casos foram pacientes que apresentaram hipotensão arterial após indução da anestesia. Como controles foram selecionados pacientes da mesma faixa etária e sexo, submetidos à intervenção cirúrgica no mesmo período dos casos e que não apresentaram hipotensão arterial. As variáveis de interesse: idade, sexo, porte cirúrgico, diagnóstico prévio de hipertensão arterial sistêmica (HAS, uso de IECA, estado físico (ASA, sangramento no intraoperatório, técnica anestésica e tempo cirúrgico. RESULTADOS: 40 pacientes apresentaram hipotensão arterial, num total de 2.179 operações. Desses, 20 usaram IECA no dia da operação. O grupo controle foi composto por 171 pacientes, dos quais 11 usaram IECA. Na análise univariada foi encontrada associação entre hipotensão arterial e idade avançada (p JUSTIFICATIVA Y OBJETIVOS: En base a relatos de hipotensión arterial durante la anestesia, se ha sugerido la suspensión de medicamentos como los inhibidores de la enzima conversora de angiotensina (IECA. Eso puede redundar en un riesgo más elevado de picos hipertensivos en el intraoperatorio y con efectos perjudiciales para el paciente. El objetivo de este estudio, fue evaluar la influencia de los IECA utilizados en el preoperatorio si surge la hipotensión arterial durante la anestesia. MÉTODO: Delineamiento de tipo caso control, donde los casos fueron pacientes que presentaron hipotensión arterial después de la inducción de la

  20. Cylindrocladium spathiphylli de espatifilo (Spathiphyllum wallisii Rengel: detecção de enzimas extracelulares em isolados normais e alterados por temperatura

    Directory of Open Access Journals (Sweden)

    Bruna Cristina Migotto

    2013-06-01

    Full Text Available O fungo Cylindrocladium spathiphylli causa podridão no colo e nas raízes de espatifilo, induzindo amarelecimento e murcha nas folhas da parte aérea. Há poucos estudos com o fungo quanto às enzimas extracelulares. Assim, delineou-se ensaio inteiramente casualizado in vitro, com três tratamentos (dois isolados normais: LFEEI016 - EPAGRI/SC e MMBF 01/01 - IB/SP; mais testemunha e seis repetições, visando a detecção de enzimas. A amilase (AM, lipase (LP, carboximetilcelulase (CMC e lacase (LC foram mensuradas pelo cálculo da área da coroa circular, local de atividade das enzimas. A catalase (CT e gelatinase (GL foram mensuradas por símbolos, depois transformados em notas (1 a 4, de ausência à intensa produção. O isolado MMBF 01/01 produziu as maiores áreas e com mais intensidade as enzimas. Das enzimas, a maior área foi a da LC e depois a LP. LFEEI016 e MMBF 01/01 não apresentaram área para AM e CMC e exibiram intensidade fraca e igual para CT. A intensidade de GT foi moderada no MMBF 01/01 (nota média 3,0 e ausente para o LFEEI016 (nota média 1,0. Após a produção das enzimas extracelulares, os isolados foram alterados vegetativamente por temperatura. Instalou-se ensaio inteiramente ao acaso, em fatorial contendo disco de micélio dos isolados do fungo versus três temperaturas [23ºC (T1; 33ºC (T2 e de 33ºC para 23ºC (T3] versus quatro períodos (3; 6; 9 e 12 dias, com oito repetições, em placa de Petri com BDA mantida em BOD. O diâmetro das colônias foi medido diariamente (mm em dois sentidos. As alterações de temperatura vistas foram: inócuo, fungistático (FS e fungicida (FC. Aplicou-se estatística nas temperaturas T1 e T3 dos isolados para checar efeito FS e escolher aqueles com maior e menor efeito. O isolado LFEEIO16 mostrou efeito FS com três dias às temperaturas 33ºC e de 33ºC para 23ºC. Nos demais períodos, o isolado sofreu efeito FC. O MMBF 01/01 mostrou efeito FS em todos os períodos. Ambos

  1. Enzimas exógenas en Nutrición Animal

    OpenAIRE

    Granados Moreno, Jairo Enrique

    2014-01-01

    El documento “Enzimas exógenas en Nutrición Animal” presenta el uso de las enzimas en la nutrición animal y como contribuyen al mejoramiento de los parámetros productivos. Explica los efectos antinutritivos de algunos moléculas que reducen la biodisponibilidad de los nutrientes.

  2. Testicular cancer trends as 'whistle blowers' of testicular developmental problems in populations

    DEFF Research Database (Denmark)

    Skakkebaek, N E; Rajpert-De Meyts, E; Jørgensen, N

    2007-01-01

    countries, which shows strong associations between testicular cancer, undescended testis, hypospadias, poor testicular development and function, and male infertility. These studies have led us to suggest the existence of a testicular dysgenesis syndrome (TDS), of which TGCC, undescended testis, hypospadias...

  3. BACTERIOCINAS E ENZIMAS PRODUZIDAS POR Bacillus spp. PARA CONSERVAÇÃO E PROCESSAMENTO DE ALIMENTOS

    National Research Council Canada - National Science Library

    D. SCHULZ; R. R. BONELLI; C. R.V. BATISTA

    2009-01-01

    ...¢ncias com atividade antimicrobiana como peptídeos, também denominados de bacteriocinas e enzimas como a subtilisina, subtilina, as proteases e as termolisinas. Muitos desses peptídeos e enzimas...

  4. Correlação entre a incapacidade funcional, idade e enzimas séricas nas doenças neuromusculares

    OpenAIRE

    Werneck,Lineu Cesar

    1995-01-01

    Foram estudados 806 casos de diversas doenças neuromusculares, a fim de verificar se existe correlação entre o grau de incapacidade funcional aferida pela escala de Vignos e Archibald (V&A) e enzimas séricas (creatinoquinase, desidrogenase lática, aldolase, transaminase glutâmica oxalacética e pirúvica). Foram utilizados testes para a análise do coeficiente de correlação simples (Pearson) e múltiplo. Foi encontrada correlação positiva (piora progressiva da incapacidade) da V&A com a idade em ...

  5. Enzimas degradantes de organofosforados: Base molecular e perspectivas para biorremediação enzimática de agroquímicos

    Directory of Open Access Journals (Sweden)

    Alexandre Alves de Castro

    Full Text Available RESUMO Muitos compostos organofosforados (OP são utilizados até hoje na agricultura como pesticidas e, infelizmente, como agentes de guerra química (ou agentes dos nervos também. Os pesticidas organofosforados e os agentes dos nervos são moléculas extremamente tóxicas, uma vez que atuam como inibidores da enzima Acetilcolinesterase (AChE. O efeito mais preocupante da exposição a estes compostos é a toxicidade colinérgica aguda, ou seja, a perda de coordenação muscular. Uma vez que o indivíduo se contamina, o processo de intoxicação começa através da ligação do OP no sítio ativo da enzima AChE inativando-a. Os tratamentos atuais para pessoas expostas a baixas doses de OP podem ser realizados com atropina, oximas e benzodiazepínicos. Processos de remediação importantes envolvem o emprego de técnicas de biorremediação utilizando diferentes enzimas degradantes, como a Fosfotriesterase da Agrobacterium radiobacter e SMP-30. Devido ao elevado número de intoxicações anualmente, é crucial buscar métodos de tratamento mais potentes e eficazes, e nesta linha, as técnicas envolvendo biorremediação parecem ser bastante promissoras para este propósito.

  6. From gonocytes to testicular cancer

    DEFF Research Database (Denmark)

    Rajpert-de Meyts, Ewa; Hoei-Hansen, Christina E

    2007-01-01

    Testicular germ-cell tumors occur primarily in young individuals, and the tumors in this age group (seminomas or nonseminomas) are derived from a preinvasive precursor cell called carcinoma in situ (CIS) or intratubular germ-cell neoplasia. These tumors have been a growing problem, especially in ...... by genomic variation (polymorphisms), thus explaining the individual susceptibility and population-level differences in the incidence of testicular cancer.......Testicular germ-cell tumors occur primarily in young individuals, and the tumors in this age group (seminomas or nonseminomas) are derived from a preinvasive precursor cell called carcinoma in situ (CIS) or intratubular germ-cell neoplasia. These tumors have been a growing problem, especially...... after puberty. In most cases the arrest/delay of germ-cell differentiation is caused by testicular dysgenesis, a multifactorial and complex syndrome that has a broad spectrum of phenotypes ranging from moderate impairment of spermatogenesis to severe disorders of sexual development and differentiation...

  7. Crossed testicular ectopia

    Directory of Open Access Journals (Sweden)

    Edward Esteves

    Full Text Available Crossed testicular ectopia (CTE is a rare anomaly, characterized by migration of one testis towards the opposite inguinal canal. Presented here is a case of crossed ectopia of the right testis, treated by extraperitoneal transposition of the gonad and right orchiopexy. Embriology and surgical findings suggest that CTE is a common consequence of many unclear ethiologic factors, specially mechanical ones, and can be associated with Muller duct persistence. Review of literature suggests a classification of CTE into 3 types: I - associated with inguinal hernia alone; II - associated with persistent mullerian remnants; III - associated with other anomalies without mullerian remnants. Treatment includes transeptal orchiopexy or extraperitoneal transposition of the testis, research for mullerian remnants and other anomalies, and long term postoperative follow-up, due to the risk of becoming malignant.

  8. Produção de proteases por Bacillus sp SMIA-2 crescido em soro de leite e água de maceração de milho e compatibilidade das enzimas com detergentes comerciais Production of proteases by Bacillus sp. SMIA-2 grow on whey and corn steep liquor and compatibility of the enzyme with commercial detergents

    OpenAIRE

    Wellingta Cristina Almeida do Nascimento; Meire Lelis Leal Martins

    2006-01-01

    A produção de proteases por Bacillus sp. SMIA-2 cultivado em um meio de cultura contendo soro de leite e água de maceração de milho foi estudada. Além disso, a compatibilidade da enzima com detergentes comerciais foi também avaliada. A atividade máxima da enzima (70 U/mg proteína) foi observada na fase estacionária de crescimento, com 32 h de incubação. Estudos sobre a caracterização da protease revelaram que a temperatura ótima para atividade desta enzima foi 70 °C e que a mesma manteve ...

  9. Association between testicular microlithiasis, testicular cancer, cryptorchidism and history of ascending testis

    Directory of Open Access Journals (Sweden)

    Stamatiou Konstantinos

    2006-08-01

    Full Text Available OBJECTIVE: To prospectively determine the prevalence of testicular microlithiasis in symptomatic patients who were referred for scrotal ultrasound examination and to evaluate the possible association of testicular microlithiasis with testicular cancer and other conditions such as cryptorchidism or history of ascending testis. MATERIALS AND METHODS: 391 men who were referred to our institutions between July 2002 and May 2005 for any type of symptoms from the testicles, underwent physical and scrotal ultrasound examination. The presence of testicular microlithiasis, the number of lesions and the involvement of both testicles in relation to the symptoms as well as the coexistence of other lesions were studied. RESULTS: Eighteen (4.6% of 391 men enrolled into the study had testicular microlithiasis. Two out of the eighteen patients (11% had concomitant testicular cancer, which was confirmed by pathological evaluation of the orchidectomy specimen. One of the patients with testicular microlithiasis presented a rising in biochemical tumor markers (LDH, and HCG and underwent orchidectomy one year later. Five of the remaining 373 (1.3% patients without microlithiasis were diagnosed with testicular cancer. Thirty six men reported having a history of ascending testis, but none of them was found with testicular cancer. Two cases of testicular torsion in a cryptorchid position had testicular microlithiasis, but the orchidectomy specimen (after surgery was negative for testicular cancer. The correlation between testicular cancer and testicular microlithiasis found in our study was statistically significant (p < 0.05. CONCLUSION: There seems to be an association between testicular microlithiasis and testicular cancer.

  10. [Testicular torsion: A case report].

    Science.gov (United States)

    García-Fernández, Gustavo; Bravo-Hernández, Alberto; Bautista-Cruz, Raúl

    The acute scrotum is an emergency. Testicular torsion represents approximately 25% of the causes. The annual incidence of testicular torsion is approximately 1/4,000 persons under 25 years, with highest prevalence between 12 and 18 years old. It usually occurs without apparent cause, but it has been associated with anatomical, traumatic, and environmental factors, among others. A male 15 year-old male, with no history of importance, was seen in the Emergency Department, presenting with a sudden and continuous pain in the left testicle. It was accompanied by a pain that radiated to the abdomen and left inguinal area, with nausea and vomiting of more than 12h onset. Doppler ultrasound showed changes suggestive of testicular torsion. Surgery was performed that showed findings of a necrotic left testicle with rotation of the spermatic cord of 360°. A left orchiectomy was performed. Testicular torsion should always be considered one of the leading causes of acute scrotal pain. Delays in diagnosis should be avoided as this is directly related to the percentage of testicular salvage or loss. Copyright © 2016 Academia Mexicana de Cirugía A.C. Publicado por Masson Doyma México S.A. All rights reserved.

  11. Doença periodontal inflamatória induzida por ligadura: Caracterização microscópica e estudo da presença de mastócitos e das enzimas óxido nítrico sintase induzível (iNOS) e metaloproteinases -2 e -9

    OpenAIRE

    Camila Oliveira Rodini

    2005-01-01

    A doença periodontal inflamatória envolve mecanismos imunopatológicos e inflamatórios contra microrganismos da placa dentobacteriana, sendo que diversas células, tanto residentes quanto inflamatórias, e mediadores químicos participam ativamente da resposta do hospedeiro. O presente trabalho teve como objetivo caracterizar o modelo experimental da doença periodontal inflamatória induzida por ligadura em ratos, com ênfase na avaliação clínica e microscópica, bem como no estudo quantitativo dos ...

  12. Testicular torsion: A surgical emergency

    Energy Technology Data Exchange (ETDEWEB)

    Prater, J.M.; Overdorf, B.S. (Surgical Residency Program at Yale University, New Haven, CT (USA))

    1991-09-01

    Testicular torsion is caused by twisting of the spermatic cord, which results in compromised testicular blood flow. The degree of ischemic injury is determined by the severity of arterial compression and the interval between the onset of symptoms and surgical intervention. Torsion usually occurs at puberty, and an anatomic defect known as bell-clapper deformity is usually present. Typical symptoms include acute scrotal pain with associated nausea and vomiting. Up to one-half of patients report previous similar episodes. On examination, the testis is high-riding, tender, swollen and firm. Testicular scan or Doppler ultrasound examination can be helpful in distinguishing torsion from acute epididymitis. Prompt surgical treatment is indicated to reduce the torsion, and bilateral orchiopexy is performed to prevent recurrence. Exocrine function, as determined by semen analysis, is often abnormal after unilateral torsion. 25 references.

  13. Histopathological analysis of testicular tumors

    Directory of Open Access Journals (Sweden)

    S Karki

    2012-09-01

    Full Text Available Background: Testicular cancers are rare in most countries. However, in many western countries its incidence has been increasing since the middle of the twentieth century. A definite geographic and racial distribution is seen in testicular tumors. The purpose of the study was to analyze the pattern and distribution of testicular cancers in one of the hospital in Nepal.Materials and methods: This was a retrospective study, in which cases were retrieved from the computer database between September 2006 and August 2011 in the department of Pathology. Pertinent data like age and histopathology of tumor were collected from the surgical pathology reports.Results: Testicular tumors were uncommon, comprising only 11.4% (8/70 cases of all testicular lesions. Most of these tumors (50% were seen between 4th and 5th decades. Germ cell tumors were the commonest tumors (62.5%, among which seminomas and mixed germ cell tumors were most frequently encountered, two cases each. Thirty percent of the biopsies consisted of undescended testis and none of them showed malignancy. Other tumors diagnosed were Non Hodgkin Lymphoma, leukemic infiltration and metastasis.Conclusion: Testicular tumors are uncommon in our population. As evident in other parts of the world, germ cell tumor was common in this study as well. However, unlike in Western population, no tumor was seen in undescended testis.Journal of Pathology of Nepal (2012 Vol. 2, 301-304DOI: http://dx.doi.org/10.3126/jpn.v2i4.6883

  14. Testicular teratoma with nephroblastoma component.

    Science.gov (United States)

    Vanasupa, Bill P; Aaberg, Randal A; Sutherland, Ronald S

    2007-07-01

    We report the development of Wilms' tumor in an atrophic testis and review the potential molecular pathogenesis. An 18-year-old man presented with 2 days of right testicular pain and growth in his atrophic testis. Ultrasonography revealed a heterogeneous mass. The chest radiographic findings and testicular tumor marker levels were normal. He underwent radical orchiectomy, with the pathologic examination showing teratoma with a nephroblastoma component, focal embryonal carcinoma, and minute yolk sac tumor. The development of Wilms' tumor in the testis is rare and can be explained by the activation of the WT1 gene during embryogenesis.

  15. Metástases de coróide de origem testicular: relato de caso Choroid metastasis of testicular primary site: case report

    Directory of Open Access Journals (Sweden)

    Marcos Rogério Mistro Piccinin

    2006-12-01

    Full Text Available Descrição do caso de um paciente masculino de 22 anos de idade, cor parda, com decréscimo da acuidade visual em olho esquerdo e com diagnóstico de tumor testicular e metástases para pulmão e rim. Avaliação da evolução da lesão coroideana compatível com metástase ocular de tumor testicular por meio de exame oftalmológico e ecográfico. Houve resolução da lesão intra-ocular juntamente com melhora radiológica pulmonar após quimioterapia durante aproximadamente 4 meses de acompanhamento. Apesar da remissão da lesão ocular, o paciente faleceu por complicações decorrentes de metástase cerebral. Abordada na literatura como rara, não foi encontrado qualquer relato de caso sobre a metástase de coróide com sítio testicular, sendo esta, talvez, sua primeira descrição.Description of a male patient case, 22 years old, presenting visual acuity decrease in the left eye associated with the diagnosis of metastatic testicular tumor to lung and kidney. Evaluation of the evolution of a choroid lesion compatible with ocular metastasis of testis tumor through ophthalmologic and echographic examinations. There was resolution of the intraocular lesion together with lung radiologic improvement after chemotherapy during approximately 4 months of follow-up. In spite of the remission of the ocular lesion, the patient died due to complications of cerebral metastasis. Approached in the literature as rare, no report was found of a case of choroidal metastasis of a testicular site, this being, perhaps, its first description.

  16. Testicular torsion: Needless testicular loss can be prevented | Njeze ...

    African Journals Online (AJOL)

    Background: The risk of losing the testis is an ever present threat in patients with testicular torsion, who delay before presenting to the surgeon. A retrospective study was carried out to audit patients with acute scrotal pain who came to the Trans Ekulu Hospital Enugu, the promptness of offering them surgical treatment and ...

  17. Polygenic susceptibility to testicular cancer

    DEFF Research Database (Denmark)

    Litchfield, Kevin; Mitchell, Jonathan S; Shipley, Janet

    2015-01-01

    BACKGROUND: The increasing incidence of testicular germ cell tumour (TGCT) combined with its strong heritable basis suggests that stratified screening for the early detection of TGCT may be clinically useful. We modelled the efficiency of such a personalised screening approach, based on genetic r...

  18. Drugs Approved for Testicular Cancer

    Science.gov (United States)

    This page lists cancer drugs approved by the Food and Drug Administration (FDA) for testicular cancer. The list includes generic names, brand names, and common drug combinations, which are shown in capital letters. The drug names link to NCI's Cancer Drug Information summaries.

  19. Luteinizing hormone in testicular descent

    DEFF Research Database (Denmark)

    Toppari, Jorma; Kaleva, Marko M; Virtanen, Helena E

    2007-01-01

    alone is not sufficient for normal testicular descent. The regulation of androgen production is influenced both by placental human chorionic gonadotropin (hCG) and pituitary luteinizing hormone (LH). There is evidence that the longer pregnancy continues, the more important role pituitary LH may have...

  20. Syndromic aspects of testicular carcinoma

    NARCIS (Netherlands)

    Lutke-Holzik, MF; Sijmons, RH; Sleijfer, DT; Sonneveld, DJA; Hoekstra-Weebers, JEHM; van Echten-Arends, J; Hoekstra, HJ

    2003-01-01

    BACKGROUND. In patients with hereditary or constitutional chromosomal anomalies, testicular carcinoma can develop sporadically or on the basis of an underlying hereditary genetic defect. Greater knowledge of these genetic defects would provide more insight into the molecular pathways that lead to

  1. Acute and intermittent testicular torsion: Analysis of presentation ...

    African Journals Online (AJOL)

    Background: Testicular torsion compromises the blood supply to the testes and may result in testicular loss or damage if not dealt with promptly. It can occur either as acute testicular torsion (ATT) or intermittent testicular torsion (ITT). This study examines the presentation, management, and outcome of adult testicular torsion.

  2. Inibidor da ECA e concentrações do peptídeo natriurético do tipo B, em idosos com insuficiência cardíaca Inhibidor de la enzima conversora de la angiotensina y concentraciones del péptido natriurético de tipo B, en personas adultas mayores con insuficiencia cardiaca ACE inhibitors and plasma B-type natriuretic peptide levels in elderly patients with heart failure

    Directory of Open Access Journals (Sweden)

    Felicio Savioli Neto

    2009-05-01

    Full Text Available FUNDAMENTO: Ensaios clínicos demonstraram os benefícios dos inibidores da ECA (IECA na atividade neuro-hormonal e na capacidade funcional de pacientes com insuficiência cardíaca (IC, com a magnitude desses efeitos sendo proporcional à dose desses agentes. Entretanto, a sistemática exclusão dos idosos, observada na maioria desses estudos, tem questionado a validação e incorporação de tais resultados na população geriátrica. OBJETIVO: Avaliar os efeitos de diferentes doses de quinapril, um IECA com meia vida biológica >24 horas, nas concentrações plasmáticas do PNB, nas distâncias percorridas no teste da caminhada de 6 minutos (TC-6 min e na incidência de reações adversas, em idosos com IC sistólica. MÉTODOS: Foram avaliados 30 pacientes (76,1 ± 5,3 anos; 15 mulheres, IC II-III (NYHA, FE ventricular esquerda FUNDAMENTO: Ensayos clínicos revelaron los beneficios de los inhibidores de la enzima conversora de la angiotensina (IECA en la actividad neurohormonal y en la capacidad funcional de pacientes con insuficiencia cardiaca (IC. La magnitud de esos efectos fue proporcional a la dosificación de esos agentes. Sin embargo, la sistemática exclusión de las personas adultas mayores, observada en la mayoría de esos estudios, ha conllevado al cuestionamiento de la validación e incorporación de dichos resultados en la población geriátrica. OBJETIVO: Evaluar los efectos de diferentes dosis de quinapril, un IECA con vida media biológica >24 horas, en las concentraciones plasmáticas del péptido natriurético de tipo B (PNB, en las distancias recorridas en el test de marcha de 6 minutos (TM6m y en la incidencia de reacciones adversas, en personas adultas mayores con IC sistólica. MÉTODOS: Se evaluaron a 30 pacientes (76,1 ± 5,3 años; 15 mujeres, IC II-III (NYHA, fracción de eyección (FE ventricular izquierda BACKGROUND: Clinical trials have demonstrated the benefits of ACE inhibitors (ACEI in the neurohormonal

  3. Impalpable Testicular Seminoma Identified on Sonoelastography

    Directory of Open Access Journals (Sweden)

    Eric M. Ghiraldi

    2015-09-01

    Full Text Available The role of sonoelastography in diagnosing cancerous masses has increased since the advent of elastography as an ultrasound modality. Its ability to display differences in the mechanical properties of cancerous masses compared to normal surrounding tissue has shown benefit in increasing the accuracy of diagnosing malignant breast and thyroid masses and has shown early potential in accomplishing better targeted prostate biopsies. To date, the literature is limited in the number of studies describing the use of sonoelastography for testicular masses. We describe a 34-year-old man who presented with an incidental finding of an impalpable hypoechoic testicular mass on grayscale ultrasound during an infertility work-up. Sonoelastography was performed displaying intermediate testicular elastic properties. Upon frozen section of the mass during surgical exploration, classic testicular seminoma was diagnosed and subsequent radical orchiectomy was performed. We would like to use this atypical presentation of testicular seminoma to review the potential role of elastography for diagnosing testicular cancer.

  4. Case report: Traumatic unilateral testicular rupture

    OpenAIRE

    Bauer, Natasha J.G.

    2016-01-01

    Introduction: Testicular trauma is classified aetiologically as blunt, penetrating or degloving. Blunt testicular trauma, caused by interpersonal violence, sporting injuries and RTAs account for the majority of cases, typically affecting males aged 15–40 [1]. Approximately 98.5% of blunt trauma resulted in unilateral testicular injury; about 12–15% involving cyclists or motorcyclists (Cass and Luxenberg, 1988) [2]. Presentation of case: A 48-year-old male motorcyclist presented to the acci...

  5. Testicular Pain Associated With Minocycline Use

    Directory of Open Access Journals (Sweden)

    Victor Kucherov

    2015-05-01

    Full Text Available Two males ages 16 and 23 years presented with new testicular pain while taking minocycline. Both patients experienced resolution of their symptoms only after minocycline discontinuation. Testicular pain with minocycline use has been previously described, however only in the setting of systemic autoimmune reactions (which were absent here. These cases represent probable rare adverse reactions to minocycline. For patients taking minocycline who experience otherwise unexplained testicular pain, a trial discontinuation of this medication should be considered.

  6. Cryopreservation of testicular tissue before long-term testicular cell culture does not alter in vitro cell dynamics

    NARCIS (Netherlands)

    Baert, Yoni; Braye, Aude; Struijk, Robin B.; van Pelt, Ans M. M.; Goossens, Ellen

    2015-01-01

    To assess whether testicular cell dynamics are altered during long-term culture after testicular tissue cryopreservation. Experimental basic science study. Reproductive biology laboratory. Testicular tissue with normal spermatogenesis was obtained from six donors. None. Detection and comparison of

  7. Enzimas exógenas em dietas de frangos de corte: desempenho Exogenous enzymes in broilers fed diets: performance

    Directory of Open Access Journals (Sweden)

    Nei André Arruda Barbosa

    2012-08-01

    Full Text Available O experimento foi conduzido para avaliar a eficiência de enzimas exógenas em dietas sobre o desempenho de frangos de corte. Um total de 1440 pintos de corte machos (Cobb 500® foram distribuídos em um delineamento inteiramente casualizado em esquema fatorial 2x2 (duas dietas com diferentes densidades nutricionais; com e sem a adição enzimática com 8 repetições de 45 aves em cada unidade experimental. As dietas com diferentes densidades nutricionais foram: controle positivo (níveis normais e um controle negativo (com redução de 4,3 e 4,5% de energia metabolizável; 16,7 e 17,7% de cálcio e 35 e 42,7% de fósforo, nas fases inicial e de crescimento, respectivamente. A suplementação enzimática consistiu da combinação das enzimas fitase (100g t-1 e amilase, xilanase e protease (500g t-1. Foi avaliado o desempenho das aves nas fases de 1 a 21 e 1 a 42 dias de idade. Na fase total de criação, as aves alimentadas com a dieta controle negativo com adição enzimática tiveram consumo de ração (5,97%, peso médio (8,47%, ganho de peso (8,64% e conversão alimentar (2,92% melhores (P0,05 ao grupo alimentado com a dieta controle positivo com ou sem enzima. A adição de enzimas exógenas em dieta de frangos de corte com redução de energia metabolizável, cálcio e fósforo, proporciona um consumo de ração, peso vivo médio e ganho de peso similar a uma dieta com níveis nutricionais adequados.The experiment was conducted to evaluate the effect of enzyme efficiency in diets with and without nutrient reduction on the performance of broilers. Thousand and hundred forty male broiler chicks (Cobb 500® were distributed in a completely randomized design with 4 treatments in a factorial 2x2 (two diets with different nutrient densities, with and without enzyme with 8 replications of 45 birds. The diets were: positive control (normal and a negative control (with a reduction of 4.3% and 4.5% of metabolizable energy, 16.7% and 17.7% of

  8. Enzyme activities and pectin breakdown of sapodilla submitted to 1-methylcyclopropene Atividade de enzimas e degradação de pectinas de sapoti submetido ao 1-metilciclopropeno

    Directory of Open Access Journals (Sweden)

    Patrícia Lígia Dantas de Morais

    2008-01-01

    Full Text Available The objective of this work was to investigate the influence of 1-methylcyclopropene (1-MCP at 300 nL L-1 on activities of cell wall hidrolytic enzymes and pectin breakdown changes which Sapodilla (Manilkara zapota cv. Itapirema 31 cell wall undergoes during ripening. Sapodilla were treated with ethylene antagonist 1-MCP at 300 nL L-1 for 12 hours and then, stored under a modified atmosphere at 25º C for 23 days. Firmness, total and soluble pectin and cell wall enzymes were monitored during storage. 1-MCP at 300 nL L-1 for 12 hours delayed significantly softening of sapodilla for 11 days at 25º C. 1-MCP postharvest treatment affected the activities of cell wall degrading enzymes pectinmethylesterase and polygalacturonase and completely suppressed increases in beta-galactosidase for 8 days, resulting in less pectin solubilization. Beta-galactosidase seems relevant to softening of sapodilla and is probably responsible for modification of both pectin and xyloglucan-cellulose microfibril network.O objetivo deste trabalho foi investigar a influência do 1-metilciclopropeno (1-MCP nas atividades das enzimas hidrolíticas da parede celular e nas mudanças na degradação da pectina durante o amadurecimento de sapoti (Manilkara zapota cv. Itapirema 31. Frutos de sapotizeiro foram tratados com o inibidor da ação do etileno, 1-MCP, na concentração de 300 nL L-1, por 12 horas e armazenados sob atmosfera modificada, à temperatura de 25± 2º C, por 23 dias. A firmeza, conteúdo de pectina total e solúvel e enzimas da parede celular foram avaliados durante todo o período de armazenamento. O 1-MCP a 300 nL L-1 por 12 horas retardou significativamente o amolecimento de sapoti por 11 dias a 25º C. O tratamento com 1-MCP afetou a atividade das enzimas pectinametilesterase e poligalacturonase e inibiu o aumento da atividade beta-galactosidase por 8 dias, e, conseqüentemente, resultou em menor solubilização das substâncias pécticas. A beta

  9. Toxinas killer e produção de enzimas por Candida albicans isoladas da mucosa bucal de pacientes com câncer Killer toxin sensitiviy and production of enzymes by Candida albicans isolated from the oral mucosa of patients with cancer

    Directory of Open Access Journals (Sweden)

    Elida Elias de Oliveira

    1998-12-01

    Full Text Available Infecções oportunistas da cavidade bucal são primariamente causadas por fungos do gênero Candida e freqüentemente ocorrem em pacientes com câncer que estão sobtratamento quimioterápico e antibacteriano. De 44 amostras coletadas da mucosa oral de pacientes com câncer, observou-se o isolamento de 25 leveduras do gênero Candida em cultivo realizado em ágar Sabouraud-dextrose. Foram identificados Candida albicans em 24 (96% isolados e C. krusei em 1 (4%. As características fenotípicas das amostras de Candida albicans mostraram que todos os isolados foram fortemente proteolíticos, capazes de produzir fosfolipases e possuíam os biotipos caracterizados como 811(95,8% e 511 (4,2% em relação a susceptibilidade às toxinas killer.Opportunistic infections of the oral cavity are primarily caused by Candida and frequently occur in patients with cancer who are undergoing chemotherapy and antibiotic treatment. Of the specimens received from the oral mucosa of 44 patients with cancer, 25 (56.8% yielded Candida on culture in Sabouraud agar. Twenty four of these isolates were identified as C. albicans (96% and 1 as C. krusei (4%. The phenotypic characteristics of these isolates showed that all of them were strongly proteolytic, had a high ability to produce phospholipase, and presented the byotypes characterized as 811 (95.8% and 511 (4.2% in terms of susceptibility to killer toxins.

  10. TESTICULAR CANCER AT KENYATTA NATIONAL HOSPITAL ...

    African Journals Online (AJOL)

    hi-tech

    2000-02-02

    Feb 2, 2000 ... differentiated tumours(13). Up to 90% of patients with testicular germ cell cancer will have elevated alpha fetoprotein (AFP) or beta human chorionic gonadotrophin. (B-hCG)(14). ... that patients with cryptochirdism have 3-46 fold increased incidence of testicular cancer(18). Furthermore 5-10% of patients ...

  11. EAU guidelines on testicular cancer: 2011 update

    NARCIS (Netherlands)

    Albers, Peter; Albrecht, Walter; Algaba, Ferran; Bokemeyer, Carsten; Cohn-Cedermark, Gabriella; Fizazi, Karim; Horwich, Alan; Laguna, Maria Pilar

    2011-01-01

    On behalf of the European Association of Urology (EAU), guidelines for the diagnosis, therapy, and follow-up of testicular cancer were established. This article is a short version of the EAU testicular cancer guidelines and summarises the main conclusions from the guidelines on the management of

  12. Early Life Events Predict Adult Testicular Function

    DEFF Research Database (Denmark)

    Hart, Roger J; Doherty, Dorota A; Keelan, Jeffrey A

    2016-01-01

    ). Consistent height above the 50th percentile for age through childhood was associated with larger adult mean testicular volume (P ... = .003) in adulthood. CONCLUSIONS: Exposures to maternal smoking and higher cord blood estrogens at delivery were associated with a reduced sperm output in adulthood. Optimal adult testicular function depends on being born at or above average weight, and maintaining optimal growth and adiposity...

  13. Spermatogenesis and testicular tumours in ageing dogs

    NARCIS (Netherlands)

    Peters, M. A.; de rooij, D. G.; Teerds, K. J.; van de Gaag, I.; van Sluijs, F. J.

    2001-01-01

    The aims of this investigation were to quantify the changes in canine spermatogenesis that occur during ageing and to study the prevalence of testicular tumours and their effects on spermatogenesis in dogs. Testes from 74 dogs of various breeds without clinically detected testicular disease and from

  14. Histopathologic pattern of neoplastic testicular and paratesticular ...

    African Journals Online (AJOL)

    Objective: The present study is undertaken to describe the spectrum of histopathological features and age distribution of neoplastic testicular and paratesticular lesions in the University of Maiduguri Teaching Hospital. Materials and Methods: A retrospective descriptive study of 14 testicular and paratesticular neoplastic ...

  15. Surviving testicular cancer: : sexuality & other existential issues

    NARCIS (Netherlands)

    Pool, Grietje

    2003-01-01

    The thesis deals with the psychological aspects of ‘sexuality after testicular cancer’, where my collegue, the physician dr. Van Basten formerly predominantly described the physical-biological aspects of this subject. Testicular cancer is a type of male genital cancer, usually diagnosed between

  16. Bilateral Variations of the Testicular Vessels: Embryological ...

    African Journals Online (AJOL)

    The testicular veins originate from the pampiniform plexus that is formed by the union of small veins from the testis and epididymis. The pampiniform plexus surrounds the testicular artery to proceed cranially and unites to form two or three venous trunks at the level of the deep inguinal ring. At the lumbar region, the venous ...

  17. Teenage testicular torsion. | Onuigbo | International Journal of ...

    African Journals Online (AJOL)

    Aim: To study testicular torsion in teenagers in the Igbo community. Method: A retrospective study was carried out as regards requests for pathological examination of specimens received at a Regional Reference Laboratory based in Enugu. Results: Over a period of 30 years, 28 surgical specimens of testicular torsion in ...

  18. Right paratesticular abscess mimicking neonatal testicular torsion ...

    African Journals Online (AJOL)

    U.O. Ezomike

    Abstract. The clinical presentation of neonatal paratesticular abscess may closely resemble that of, neonatal testicular torsion and the use of scrotal ultrasonography to differentiate the two has low, sensitivity. We propose early operative treatment of suspected neonatal testicular torsion to salvage, the testicle in cases of ...

  19. Testicular microlithiasis: Case report and literature review

    African Journals Online (AJOL)

    [1] Dogra SV, Gottlieb RH, Rubens DJ, Liao L. Benign intratesticular cystic lesions: US features. Radiographics 2001;21:S273–81. [2] Gooding GA, Leonhardt W, Stein R. Testicular cysts: US findings. Radi- ology 1987;163:537–8. [3] Hamm B, Fobbe F, Loy V. Testicular cysts: differentiation with US and clinical findings.

  20. Phthalate excretion pattern and testicular function

    DEFF Research Database (Denmark)

    Joensen, Ulla Nordström; Frederiksen, Hanne; Jensen, Martin Blomberg

    2012-01-01

    In animals, some phthalates impair male reproductive development and function. Epidemiological studies have reported inconsistent evidence of associations between phthalates and markers of human testicular function.......In animals, some phthalates impair male reproductive development and function. Epidemiological studies have reported inconsistent evidence of associations between phthalates and markers of human testicular function....

  1. Physiochemical, biochemistry and functional characterization of jabuticaba stored under different temperatures/Caracterizacao fisico-quimica, bioquimica e funcional da jabuticaba armazenada sob diferentes temperatures

    National Research Council Canada - National Science Library

    Vieites, Rogerio Lopes; Daiuto, Erica Regina; De Moraes, Maria Rosa; Neves, Leandro Camargo; De Carvalho, Lidia Raquel

    2011-01-01

    ...%, sendo avaliados a cada 5 dias. Os frutos foram avaliados quanto a perda de massa, atividade respiratoria, pH, acidez titulavel, solidos soluveis, acido ascorbico, textura, pectina total e soluvel, atividade da enzima polifenoloxidase (PFO...

  2. Physiological quality and amylase enzyme expression in maize seeds Qualidade fisiológica e expressão das enzimas amilases em sementes de milho

    Directory of Open Access Journals (Sweden)

    Gustavo Evangelista Oliveira

    2013-02-01

    Full Text Available The physiological quality of maize seeds is affected by the genotype. Thus, the study of expression of genes associated with this characteristic is important in the genotype selection process in breeding programs. The aim of this research was to study the expression of amylase enzymes associated with physiological quality of maize seeds with different genotypes and seed sizes. We further sought to assess the expression of these enzymes in dry and soaked seeds The experiment was conducted in the experimental area and the Central Seed Laboratory of the Department of Agriculture of the Universidade Federal de Lavras. Seeds of four maize inbred lines were used, classified in two sizes. The physiological quality of the seeds was evaluated by means of germination, seedling emergence, seedling emergence speed index and accelerated aging test. Expression of the alpha amylase enzyme was evaluated by the electrophoresis technique and expression of the alpha amylase B73, alpha amylase (LOC542522 and beta amylase 5 (amyb5 genes was studied by the qRT-PCR technique in dry and soaked seeds of the inbred lines. There is differentiated expression of amylase enzymes in maize seeds of inbred lines with different levels of physiological quality. higher expression of amylase enzymes is observed in soaked maize seeds. The expression of transcripts is higher in smaller as wellas in soaked maize seeds of inbred lines.A qualidade fisiológica de sementes de milho é influenciada pelo genótipo. Assim, o estudo da expressão de genes associados a essa característica é importante no processo de seleção de genótipos em programas de melhoramento. O objetivo neste trabalho foi estudar a expressão das enzimas amilases associadas à qualidade fisiológica de sementes de milho, de diferentes genótipos e tamanhos de sementes. Objetivou-se ainda avaliar a expressão dessas enzimas em sementes secas e embebidas. O experimento foi conduzido em área experimental e no

  3. Case Report - Bilateral synchronous testicular germ cell tumours in ...

    African Journals Online (AJOL)

    Bilateral testicular tumours are rare, and 80% of bilateral tumours are metachronous. The incidence of testicular tumours is high in cryptorchidism. Synchronous bilateral testicular tumours are rare, and bilateral synchronous testicular tumours in bilateral cryptorchidism extremely rare, probably not reported previously.

  4. Primary Testicular Lymphoma In Nigerian Males: Case Report and ...

    African Journals Online (AJOL)

    Primary Testicular Lymphoma In Nigerian Males: Case Report and Clinicopathological Review. ... A review of cases of primary testicular lymphoma seen within a period of twelve years at the OAUTHC Nigeria was carried out. Three cases of primary testicular ... Key Words: testicular, lymphoma, Non- Hodgkin Nigerian ...

  5. Accuracy of Prader orchidometer in measuring testicular volume

    African Journals Online (AJOL)

    2012-10-21

    Oct 21, 2012 ... Background: Seminiferous tubules comprise 80-90% of testicular mass. Thus, the testicular volume is believed to be an index of spermatogenesis. Therefore, accurate testicular volume is one way to assess testicular function. Objective: To determine the accuracy of Prader orchidometer for measuring the ...

  6. Acute and intermittent testicular torsion: Analysis of presentation ...

    African Journals Online (AJOL)

    2015-11-18

    Nov 18, 2015 ... Background: Testicular torsion compromises the blood supply to the testes and may result in testicular loss or damage if not dealt with promptly. It can occur either as acute testicular torsion (ATT) or intermittent testicular torsion (ITT). This study examines the presentation, management, and outcome of adult ...

  7. Unusual termination of the right testicular vein | Woldeyes | Anatomy ...

    African Journals Online (AJOL)

    The testicular veins are formed by the veins emerging from the testis and epididymis forming the pampiniform venous plexus. The right testicular vein drains into inferior vena cava and the left testicular vein to the left renal vein. Testicular veins display a great variability with regard to their number, course and sites of ...

  8. Enzimas amilolíticas de mandioquinha-salsa (Arracacia xanthorrhiza Bancroft. Amylolytic enzymes from peruvian carrot (Arracaia xanthorrhiza Bancroft.

    Directory of Open Access Journals (Sweden)

    Tatiana da Costa Raposo Pires

    2002-12-01

    Full Text Available O objetivo do presente trabalho foi de caracterizar as enzimas amilolíticas de mandioquinha-salsa (Arracacia xanthorrhiza Bancroft.. Foram realizados ensaios mediante a determinação da atividade enzimática, variando-se as condições do meio, tais como temperatura, pH e concentração de cátions. Em gel de eletroforese foram detectadas três bandas protéicas com intensa atividade hidrolítica. As enzimas apresentaram pH ótimo de atividade em torno de 6,0 e mostraram-se mais sensíveis a valores de pH alcalino quando pré-incubadas a 50oC. A temperatura ótima de ativação enzimática foi de 50oC, enquanto aos 70oC, a atividade amilásica foi reduzida em 80%. Em temperaturas altas temperaturas (60 e 70oC, a inativação enzimática ocorreu após 60 e 25min de incubação, respectivamente. Ensaios de estabilidade térmica mostraram que as amilases mantiveram alta atividade após 25h mediante a incubação a 20 e 30oC. Os valores de Km, Vmax e energia de ativação foram de 0,41mg/mL, 1,11mg/mL/min e 7,53kcal/mol, respectivamente. Constatou-se que a presença de Ca+2 ou Mg+2 provoca aumento na atividade amilásica, enquanto íons de Cu+2 causam uma diminuição. Apesar da discreta atividade amilásica apresentada, as enzimas demonstraram ter alta resistência e estabilidade térmicas.This investigation was undertaken to characterize amylases from Peruvian carrot (Arracacia xanthorrhiza Bancroft.. Activity assays were performed in different changing pHs, temperatures, time and cation concentrations. PAGE zymograms and the amylase activity essays were detected by starch-iodine complex. The results showed that Peruvian carrot has three amylase components on the crude extract. The enzymes had optimum pH at 6.0. Amylases were more sensitive to basic pH when the pre-incubation occured at 50oC. The best activation temperature occurred at 50oC, whereas at 70oC the amylase activity was reduced by 80%. Assays of thermal stability at 20 and 30o

  9. Effects of albumin administration in serum liver enzymes of rats in the presence of extrahepatic biliary obstruction Efeitos da administração de albumina nos níveis séricos de enzimas hepáticas em ratos com obstrução biliar extra-hepática

    Directory of Open Access Journals (Sweden)

    Jorge Fernando Rebouças Lessa

    2011-01-01

    Full Text Available PURPOSE: To study the influence of albumin on changes of liver function in the extrahepatic biliary obstruction through an experimental model in rats. METHODS: Sixty rats were divided into four groups: Group C (Control: 6 animals. Group M (Fictitious Operation: 18 rats underwent laparotomy and handling of the bile ducts; Groups O (extrahepatic biliary obstruction and A (Treated with 2% albumin: 18 animals in each group underwent ligation of the ductus liver; The animals in groups M, O and A were divided into three subgroups of 6 animals each to be killed in the 7, 14 and 21 days postoperative (POD. Blood was drawn for determination of total bilirubin (TB, indirect bilirubin (IB, direct bilirubin (DB, alkaline phosphatase (ALP, aspartate aminotransferase (AST and alanine aminotransferase (ALT. RESULTS: On POD 7, BI levels were 4.5 mg / dl in group O and 2.1 mg / dl in group A (p = 0.025. On the 14th POD, the levels of PA were 1185.2 U / l in the group and O 458.3 U / l in group A (p = 0.004. ALT levels were 101.7 U / l in the group O and 75.7 U / l in group A (= 0.037. On POD 21, the levels of ALP were 1069.5 U / l in the group O and 468.3 U / l in group A (p = 0, 004. CONCLUSION: The administration of albumin reduced the serum levels of bilirubin in the 7th day of supplementationOBJETIVO: Estudar a influência da albumina em alterações funcionais do fígado na obstrução biliar extra-hepática por meio de um modelo experimental desenvolvido em ratos. MÉTODOS: 60 ratos distribuídos em quatro grupos: Grupo C (Controle: 6 animais. Grupo M (Operação Fictícia: 18 ratos submetidos à laparotomia e manuseio das vias biliares; Grupos O (Obstrução Biliar Extra-hepática e A (Tratados com albumina a 2%: 18 animais, em cada grupo, submetidos à ligadura do ducto hepático; Os animais dos grupos M, O e A foram distribuídos em três subgrupos de 6 animais cada, para serem mortos nos 7°, 14° e 21° dias pós- operatórios (DPO. Foi colhido sangue

  10. Testicular microlithiasis: a case report and review of the literature.

    Science.gov (United States)

    Lawrentschuk, Nathan; Brough, Stephen J S; de Ryke, Rex J

    2003-05-01

    Testicular microlithiasis (TM) is a rare condition in which men have innumerable testicular calcifications. It is increasingly being reported on ultrasound. The published literature has reported an association between confirmed testicular malignancy and testicular microlithiasis. The relationship between TM and the risk of developing malignancy is unclear. The present paper reports a patient with a previously normal scrotal ultrasound except for bilateral sonographically detected TM who developed a testicular tumour. It also discusses the appropriate management of TM after reviewing the published literature.

  11. Testicular cancer: addressing the psychosexual issues.

    LENUS (Irish Health Repository)

    Moore, Annamarie

    2012-01-31

    Testicular cancer is the most common malignancy in men aged 15-35 years and predominantly occurs at a time in a man\\'s life when important decisions about marriage, starting a family and a professional career are being made. While treatments for testicular cancer are very successful, they can have a major impact on the person\\'s sexuality and sense of self. The focus of this article is on exploring the impact of cancer treatments for testicular cancer on men\\'s sexuality and how nurses can respond to their concerns in a sensitive and informed manner.

  12. [Segmental testicular infarction in sickle cell anemia].

    Science.gov (United States)

    Mueller, F E

    2014-05-01

    Vascular occlusions are the clinical indicators of sickle cell disease and in urology they can lead to papillary necrosis, renal infarction or priapism. Segmental testicular infarction in patients with sickle cell disease is a rare event and only a few cases have been reported. We present a 25-year-old man with right testicular pain increasing over 3 days and sickle cell disease. Ultrasound of the right scrotum presented an inhomogeneous, mainly hypoechegenic mass with a hyperechogenic margin and no sign of blood flow. A partial orchiectomy was performed with total enucleation of the lesion, which was histologically diagnosed as benign hemorrhagic necrotic testicular tissue.

  13. Testicular Damage following Testicular Sperm Retrieval: A Ram Model Study

    Directory of Open Access Journals (Sweden)

    Jens Fedder

    2017-01-01

    Full Text Available The aim of this study was to evaluate the possible development of histological abnormalities such as fibrosis and microcalcifications after sperm retrieval in a ram model. Fourteen testicles in nine rams were exposed to open biopsy, multiple TESAs, or TESE, and the remaining four testicles were left unoperated on as controls. Three months after sperm retrieval, the testicles were removed, fixed, and cut into 1/2 cm thick slices and systematically put onto a glass plate exposing macroscopic abnormalities. Tissue from abnormal areas was cut into 3 μm sections and stained for histological evaluation. Pathological abnormalities were observed in testicles exposed to sperm retrieval (≥11 of 14 compared to 0 of 4 control testicles. Testicular damage was found independently of the kind of intervention used. Therefore, cryopreservation of excess sperm should be considered while retrieving sperm.

  14. Deficiência das enzimas do ciclo de Krebs

    OpenAIRE

    Silva, Jaquelina Henriques

    2016-01-01

    Trabalho final de mestrado integrado em Medicina, apresentado á Faculdade de Medicina da Universidade de Coimbra Introdução A importância do ciclo dos ácidos tricarboxílicos ou ciclo de Krebs está associada à formação de equivalentes redutores para a produção de energia (ATP) pela fosforilação oxidativa, na mitocôndria. Também tem uma importante ligação com outras vias, fornecendo intermediários importantes para a biossíntese de várias moléculas, tais como ácidos gordos, ami...

  15. Testicular myeloid sarcoma: case report

    Directory of Open Access Journals (Sweden)

    Luzia Beatriz Ribeiro Zago

    2013-01-01

    Full Text Available Myeloid sarcomas are extramedullary solid tumors composed of immature granulocytic precursor cells. In association with acute myeloid leukemia and other myeloproliferative disorders, they may arise concurrently with compromised bone marrow related to acute myeloid leukemia, as a relapsed presentation, or occur as the first manifestation. The testicles are considered to be an uncommon site for myeloid sarcomas. No therapeutic strategy has been defined as best but may include chemotherapy, radiotherapy and/or hematopoietic stem cell transplantation. This study reports the evolution of a patient with testicular myeloid sarcoma as the first manifestation of acute myeloid leukemia. The patient initially refused medical treatment and died five months after the clinical condition started.

  16. Cadmium-induced testicular injury.

    Science.gov (United States)

    Siu, Erica R; Mruk, Dolores D; Porto, Catarina S; Cheng, C Yan

    2009-08-01

    Cadmium (Cd) is an environmental toxicant and an endocrine disruptor in humans and rodents. Several organs (e.g., kidney, liver) are affected by Cd and recent studies have illustrated that the testis is exceedingly sensitive to Cd toxicity. More important, Cd and other toxicants, such as heavy metals (e.g., lead, mercury) and estrogenic-based compounds (e.g., bisphenols) may account for the recent declining fertility in men among developed countries by reducing sperm count and testis function. In this review, we critically discuss recent data in the field that have demonstrated the Cd-induced toxicity to the testis is probably the result of interactions of a complex network of causes. This is likely to involve the disruption of the blood-testis barrier (BTB) via specific signal transduction pathways and signaling molecules, such as p38 mitogen-activated protein kinase (MAPK). We also summarize current studies on factors that confer and/or regulate the testis sensitivity to Cd, such as Cd transporters and metallothioneins, the impact of Cd on the testis as an endocrine disruptor and oxidative stress inducer, and how it may disrupt the Zn(2+) and/or Ca(2+) mediated cellular events. While much work is needed before a unified mechanistic pathway of Cd-induced testicular toxicity emerges, recent studies have helped to identify some of the likely mechanisms and/or events that take place during Cd-induced testis injury. Furthermore, some of the recent studies have shed lights on potential therapeutic or preventive approaches that can be developed in future studies by blocking or minimizing the destructive effects of Cd to testicular function in men.

  17. Crescimento foliar e atividades das enzimas antioxidativas em plântulas de girassol suplementadas com percolado de aterro sanitário e submetidas a estresse hídrico

    Directory of Open Access Journals (Sweden)

    Francisco Holanda Nunes Junior

    2017-01-01

    Full Text Available Em regiões áridas ou semiáridas, a escassez hídrica tem sido um dos principais fatores limitantes da produção agrícola. Diante disso, o presente trabalho objetivou analisar os efeitos da aplicação de percolado de aterro sanitário no crescimento foliar (número de folhas e área foliar e as atividades das enzimas antioxidativas: superóxido dismutase (SOD, catalase (CAT, peroxidase do ascorbato (APX e peroxidase do guaiacol (GPX em folhas e raízes de plântulas de girassol submetidas às condições de estresse hídrico. O delineamento experimental foi o inteiramente casualizado, disposto em arranjo fatorial dois (irrigadas ou não irrigadas x quatro (areia; areia + adubo orgânico 100 kg N ha-1; areia + percolado de aterro sanitário 100 kg N ha-1; areia + percolado de aterro sanitário 150 kg N ha-1, com cinco repetições. Em relação aos parâmetros foliares, o tratamento 100 kg N ha-1 suplementado com percolado de aterro sanitário obteve os melhores incrementos no número de folhas e área foliar. Além disso, verificaram-se aumentos nas atividades das enzimas antioxidativas em folhas e raízes de plântulas de girassol suplementadas com percolado de aterro sanitário, sendo provável que as reduções dos efeitos deletérios do estresse hídrico nas variáveis foliares dos tratamentos suplementados com percolado de aterro sanitário tenham ocorrido em virtude das maiores atividades das enzimas antioxidativas, especialmente as da CAT nas folhas e GPX nas raízes.

  18. Valoración diagnóstica de enzimas hepáticas en perfiles bioquímicos sanguíneos de vacas lecheras

    Directory of Open Access Journals (Sweden)

    Mirela Noro

    2013-08-01

    Full Text Available Objetivo. El objetivo del estudio fue determinar la asociación, sensibilidad (Se y especificidad (Es de las enzimas glutamato deshidrogenasa (GDH, EC: 1.4.1.3, aspartato aminotransferasa (AST, EC: 2.6.1.1 y g-glutamil transpeptidasa (GGT, EC: 2.3.2.2 como indicadores de daño hepático en perfiles bioquímicos sanguíneos de vacas lecheras. Materiales y métodos. Se analizaron los valores de la actividad plasmática de GDH, AST y GGT, obtenidos de 1566 vacas correspondientes a 112 perfiles bioquímicos realizados en rebaños lecheros. Se determinó la asociación entre la actividad de las enzimas y el área bajo la curva (ABC y la Se y la Es mediante curva ROC considerando la presencia de daño hepático cuando GDH>30 U/L o GGT>39 U/L. Resultados. La AST presentó mayor asociación con la GDH (r=0.55 que la GGT (r=0.44, así como una mayor ABC (p=0.01 al utilizar GDH>30 U/L para indicar daño hepático. El grado de asociación entre AST y GGT fue de r=0.42. La sensibilidad de la AST para detectar daño hepático, utilizando el punto de corte de referencia del laboratorio (>150 U/L, fue inferior que al emplear GGT (>39 U/L. El punto crítico de máxima Se y Es de la curva ROC para daño hepático se obtuvo con AST>110 U/L, valor que incrementó la concordancia diagnóstica con la GDH (Kappa >0.300, pero no con la GGT. Conclusiones. La actividad plasmática de AST en vacas lecheras se asocia mayormente con la de GDH que con la de GGT y su límite de referencia para predecir daño hepático correspondería a >110 U/L.

  19. Surviving testicular cancer: the Lebanese lived experience.

    Science.gov (United States)

    Saab, Mohammad; Noureddine, Samar; Abu-Saad Huijer, Huda; Dejong, Jocelyn

    2014-01-01

    Testicular cancer is thought to have a great impact on its survivors, yet there has been limited literature on the topic globally and no literature on the topic in Lebanon and the Arab region. The purpose of this study was to explore the lived experience of Lebanese testicular cancer survivors and gain an in-depth understanding of the psychosexual aspect of their experience. A hermeneutic phenomenological approach with semistructured digitally recorded interviews and observational field notes was utilized. A purposive sample of Lebanese testicular cancer survivors, aged between 18 and 50 years, in remission for at least 3 years, and willing to share personal information was recruited. Interviews were transcribed verbatim in Arabic. Data saturation was achieved at the seventh interview; a total of eight informants were recruited. The opening question was, "Tell me about your life since you got treated for testicular cancer," and was followed by probing questions. Two to three weeks after the initial interview, informants were called to validate the investigators' primary analysis. Six core themes emerged: cancer perception in the Lebanese culture; "do not show, do not tell"; cancer experience is a turning point; fertility, manhood, and relationships; coping with cancer; and preserved aspects of life. The findings provide an in-depth understanding of the experience of Lebanese testicular cancer survivors with a focus on the psychosexual aspect of this experience. The results suggest the need to educate patients about testicular cancer and its effect on their fertility.

  20. Testicular organoids: a new model to study the testicular microenvironment in vitro?

    Science.gov (United States)

    Alves-Lopes, João Pedro; Stukenborg, Jan-Bernd

    2017-12-21

    In recent decades, a broad range of strategies have been applied to model the testicular microenvironment in vitro. These models have been utilized to study testicular physiology and development. However, a system that allows investigations into testicular organogenesis and its impact in the spermatogonial stem-cell (SSC) niche in vitro has not been developed yet. Recently, the creation of tissue-specific organ-like structures called organoids has resurged, helping researchers to answer scientific questions that previous in vitro models could not help to elucidate. So far, a small number of publications have concerned the generation of testicular organoids and their application in the field of reproductive medicine and biology. Here, we aim to elucidate whether testicular organoids might be useful in answering current scientific questions about the regulation and function of the SSC niche as well as germ cell proliferation and differentiation, and whether or not the existing in vitro models are already sufficient to address them. Moreover, we would like to discuss how an organoid system can be a better solution to address these prominent scientific problems in our field, by the creation of a rationale parallel to those in other areas where organoid systems have been successfully utilized. We comprehensively reviewed publications regarding testicular organoids and the methods that most closely led to the formation of these organ-like structures in vitro by searching for the following terms in both PubMed and the Web of Science database: testicular organoid, seminiferous tubule 3D culture, Sertoli cell 3D culture, testicular cord formation in vitro, testicular morphogenesis in vitro, germ cell 3D culture, in vitro spermatogenesis, testicular de novo morphogenesis, seminiferous tubule de novo morphogenesis, seminiferous tubule-like structures, testicular in vitro model and male germ cell niche in vitro, with no restrictions to any publishing year. The inclusion

  1. Evaluation of the effects of S-methylisothiourea hemisulfate, an inducible nitric oxide synthase inhibitor, on the healing of colonic anastomosis in rats Avaliação dos efeitos da S-metilisotiouréia, um inibidor da enzima óxido nítrico sintase induzível, na cicatrização de anastomoses colônicas em ratos

    Directory of Open Access Journals (Sweden)

    Romulo Medeiros de Almeida

    2012-12-01

    Full Text Available PURPOSE: To evaluate the effects of S-methylisothiourea hemisulfate (SMT on the healing of colonic anastomosis in rats. METHODS: Sixty rats Wistar were distributed into two groups of 30 animals: experimental (E and control C. The animals of experimental group received intraperitoneal SMT at 50mg/kg/dose every 12 hours for 72 hours. The control group received intraperitoneal saline at the same volume of SMT. The rats were subdivided into subgroups groups of 10 for euthanasia on the third, seventh, and 14th postoperative days (POD. We evaluated clinical and weight evolution, breaking strength and histopathology; also, a blood sample was collected for serum dosage of nitrite/nitrate. RESULTS: There was more vascular neoformation (p=0.006 and granulation (p=0.002 in the E3 group, and more mononuclear infiltrates in the C3 group (p=0.041. There was also more edema in the C14 group (p=0.008. There was no statistically significant difference in breaking strength, nitrite/nitrate dosage, and the remaining histopathological parameters. CONCLUSION: The use of S-methylisothiourea hemisulfate improved the healing of colonic anastomosis in rats on the third postoperative day by accelerating the proliferative stage of healing, but without interfering with the breaking strength of the anastomosis.OBJETIVO: Avaliar os efeitos do hemissulfato de S-metilisotiouréia (SMT na cicatrização de anastomoses colônicas em ratos no terceiro, sétimo e 14° dia de pós-operatório (DPO. MÉTODOS: Sessenta ratos Wistar foram distribuídos em dois grupos: experimental (E e controle (C, com 30 animais cada. No grupo experimental foi administrado SMT 50mg/kg/dose, intraperitoneal a cada 12 horas por 72 horas. O grupo controle recebeu NaCl a 0,9%. Os ratos foram subdivididos em grupos de 10 para eutanásia no terceiro, sétimo e 14° DPO. Avaliou-se a evolução clínica e o peso dos animais, a resistência tênsil e histopatologia da anastomose, e a dosagem de nitrito

  2. Histological evidence of testicular dysgenesis in contralateral biopsies from 218 patients with testicular germ cell cancer

    DEFF Research Database (Denmark)

    Hoei-Hansen, Christina E; Holm, Mette; Rajpert-De Meyts, Ewa

    2003-01-01

    dysgenesis, microscopic dysgenetic features were quantified in contralateral testicular biopsies in patients with a testicular germ cell tumour. Two hundred and eighty consecutive contralateral testicular biopsies from Danish patients with testicular cancer diagnosed in 1998-2001 were evaluated...... retrospectively. Two hundred and eighteen specimens were subsequently included in this study, after 63 patients who did not meet inclusion criteria had to be excluded. The presence of carcinoma in situ (which is believed to originate from transformed gonocytes) was detected in 8.7% of biopsies. The incidence...... patients, areas with immature and morphologically distorted tubules were also noted. Spermatogenesis was qualitatively normal in 51.4%, whereas 11.5% had very poor or absent spermatogenesis. It is concluded that microscopic testicular dysgenesis is a frequent feature in contralateral biopsies from patients...

  3. Public awareness of testicular cancer and testicular self-examination in academic environments: a lost opportunity

    Directory of Open Access Journals (Sweden)

    Henry A. A. Ugboma

    2011-01-01

    Full Text Available BACKGROUND: Although testicular cancer is the most common cancer among 18- to 50-year-old males, healthcare providers seldom teach testicular self-examination techniques to clients, thus potentially missing opportunities for early detection. This form of cancer is easily diagnosable by testicular self-examination and is 96% curable if detected early. Periodic self-examination must be performed for early detection. Knowledge deficits and sociocultural norms contribute to low levels of health-related knowledge in most patients, resulting in undue delays before seeking medical advice. OBJECTIVE: Our aim is to assess the level of awareness of testicular cancer and the prevalence of the practice of testicular self-examination in academic environments to enable appropriate interventions. METHOD: A cross-sectional survey was administered to 750 consecutive males aged 18-50 years in three tertiary institutions in Port Harcourt from October 2008 to April 2009. RESULT: Knowledge or awareness of testicular cancer was poor. Almost all of the respondents were unaware that testicular lumps may be signs of cancer. A lump was typically construed as a benign carbuncle or something that could resolve spontaneously. The main factor contributing to respondents' lack of knowledge of testicular cancer was that few reported that they were "ever taught about testicular self-examination." CONCLUSION: Young adult men are unaware of their risk for testicular cancer, which is the most common neoplasm in this age group. Healthcare providers are not informing them of this risk, nor are they teaching them the simple early detection technique of self-examination of the testes.

  4. Testicular Sperm Sampling by Subcapsular Orchiectomy in Klinefelter Patients

    DEFF Research Database (Denmark)

    Fedder, Jens; Gravholt, Claus H.; Kristensen, Stine Gry

    2015-01-01

    OBJECTIVE: To evaluate subcapsular orchiectomy as a method to retrieve spermatozoa from minute testicular foci in men with Klinefelter syndrome (KS). METHODS: Fourteen men with KS were consecutively recruited to unilateral subcapsular orchiectomy. Testicular tissue was dissected mechanically...

  5. Testicular Cancer Screening (PDQ®)—Health Professional Version

    Science.gov (United States)

    For testicular cancer, there is no standard or routine screening test. Review the limited evidence on the benefits and harms of screening for testicular cancer using ultrasound, physical examination, and self-examination in this expert-reviewed summary.

  6. Testicular seminoma metastasis to duodenum. Misdiagnosed as primary duodenal tumor

    Directory of Open Access Journals (Sweden)

    Amer Hashim Al Ani

    2016-01-01

    Conclusion: High index of suspicion for testicular seminoma must be raised when treating young males with GIT complications like hemorrhage. Testicular seminoma is the most common solid tumor at this age. Sometimes it is the cause behind this complication.

  7. Perinatal testicular torsion: literature review and local experience

    African Journals Online (AJOL)

    IUTT) and postnatal testicular torsion (PTT). IUTT includes cases of vanished testis and testicular mass presenting at birth. Controversies exist regarding the need for urgent exploration and contralateral orchiopexy. The aim of this study is to ...

  8. Perinatal testicular torsion: literature review and local experience ...

    African Journals Online (AJOL)

    IUTT) and postnatal testicular torsion (PTT). IUTT includes cases of vanished testis and testicular mass presenting at birth. Controversies exist regarding the need for urgent exploration and contralateral orchiopexy. The aim of this study is to ...

  9. Enzyme expression in indica and japonica rice cultivars under saline stress=Expressão de enzimas em cultivares de arroz indica e japonica sob estresse salino

    Directory of Open Access Journals (Sweden)

    Cristina Rodrigues Mendes

    2012-10-01

    indicas amplamente utilizadas no RS demonstram maior suscetibilidade à salinidade quando comparadas às japonicas em outros aspectos fisiológicos. O objetivo da pesquisa foi analisar a expressão de enzimas envolvidas na respiração de cultivares de arroz, indica e japonica, submetidas à salinidade. Foram utilizadas cultivares de Oryza sativa L. spp. japonica S. Kato (BRS Bojuru, IAS 12-9 Formosa e Goyakuman e de Oryza sativa L. spp. indica S. Kato (BRS-7 Taim, BRS Querência e BRS Atalanta. As plântulas foram transferidas para bacias de 15 L, contendo solução nutritiva de Hoagland meia força acrescida de 0, 25, 50, 75 e 100 mM de NaCl. A coleta foi aos 14, 28 e 42 dias. Os tecidos vegetais foram macerados e colocados em tubos eppendorf com solução extratora de Scandálios. A eletroforese foi realizada em géis de poliacrilamida 7% em cubas eletroforéticas verticais. As bandas foram reveladas para os sistemas enzimáticos esterase, álcool desidrogenase, fosfoglico isomerase, malato desidrogenase, enzima málica e alfa amilase. A expressão das enzimas foi maior na subespécie japonica, com bandas mais intensas conforme o aumento da salinidade. Conclui-se que tais sistemas enzimáticos estejam envolvidos em mecanismos de tolerância ao estresse salino nas cultivares de O. sativa spp. japonica.

  10. Utilização do triticale e de enzimas em dietas para suínos: digestibilidade e metabolismo Utilization of triticale and of enzymes in pig diets: digestibility and metabolism

    Directory of Open Access Journals (Sweden)

    L. Hauschild

    2008-04-01

    Full Text Available Avaliou-se o efeito da inclusão de níveis de triticale sobre o valor nutritivo de dietas para suínos com ou sem enzimas. Foram utilizados 24 suínos machos, castrados, com peso inicial de 59kg, alojados em gaiolas metabólicas. O delineamento foi de blocos ao acaso em arranjo fatorial 3 x 2 (níveis de triticale, 0, 30 e 60%, com ou sem enzimas, com quatro repetições cada. A inclusão de triticale na dieta em até 60% e a adição de enzimas não influenciou (P>0,05 a digestibilidade da matéria seca, fósforo, energia bruta, metabolização da energia, energia digestível e metabolizável e o balanço do N. Os valores médios de energia digestível e metabolizável foram de 3.537 e 3.435kcal. Houve interação triticale x enzimas na proteína digestível aparente (PDa (PThe effect of triticale levels with or without enzyme supplementation on nutritive value of pig’s diet was evaluated using twenty four barrows weighting 59kg, housed in metabolic crates. A complete randomized experimental block design in a 3 x 2 factorial arrangement (triticale levels -0, 30 e 60% with or without enzymes with four replicates each was utilized. No effects of triticale levels and enzymes supplementation (P>0.05 were observed on dry matter digestibility, phosphorus, crude energy, metabolization of energy, digestible and metabolizable energy and nitrogen balance. The average values of digestible and metabolizable energy were 3,537 e 3,435kcal. An interaction triticale x enzymes effect on apparent digestible protein (DPa (P<0.01 was observed. Apparent digestible protein for 60% triticale diets without enzymes supplementation was 6% lower than control diet while DPa of 30 and 60% triticale diets with enzymes supplementation were similar to DPa of the control diet and 5% higher than 60% triticale diets without enzyme supplementation. The inclusion of 60% triticale in pig diets reduces the DPa. Enzymes supplementation improves the DPa for diets containing 30 and

  11. Testicular dysgenesis syndrome: possible role of endocrine disrupters

    DEFF Research Database (Denmark)

    Bay, Katrine; Asklund, Camilla; Skakkebaek, Niels E

    2006-01-01

    The testicular dysgenesis syndrome (TDS) hypothesis proposes that the four conditions cryptorchidism, hypospadias, impaired spermatogenesis and testis cancer may all be manifestations of disturbed prenatal testicular development. The TDS hypothesis is based on epidemiological, clinical and molecu......The testicular dysgenesis syndrome (TDS) hypothesis proposes that the four conditions cryptorchidism, hypospadias, impaired spermatogenesis and testis cancer may all be manifestations of disturbed prenatal testicular development. The TDS hypothesis is based on epidemiological, clinical...

  12. Microgravity effect on testicular functions.

    Science.gov (United States)

    Ricci, G; Catizone, A; Esposito, R; Galdieri, M

    2004-07-01

    In mammals spaceflight influences spermatogenesis since spermatogonial germ cell proliferation, compared to synchronous controls, is lightly decreased in irradiated or flown rats. Moreover, changes of the plasmatic testosterone production was described either in flight rats, or in rats maintained in simulated microgravity conditions. The hormonal levels of the astronauts change as it has been previously described, including hormones involved in the regulation of spermatogenesis such as testosterone and luteinizing hormone (LH). In microgravity conditions, human testosterone levels decreased whereas circulating LH levels increased. To study the effect of simulated microgravity on mammalian spermatogenesis we have utilized the Rotary Cell Culture System (RCCS) and we have cultured testicular fragments isolated from prepuberal rats in a chemically defined medium for three days under microgravity conditions. As control we have cultured the same amount of fragments at unit gravity. The morphology of the samples has been studied and the number of proliferating cells has been counted in control samples and in samples maintained in RCCS. The results indicate that the number of duplicating cells in the tubules was significantly increased in the microgravity-cultured fragments. The amount of testosterone secreted in the culture medium has been also evaluated and in RCCS samples the amount of the hormone was higher respect to the control samples.

  13. Alteração de enzimas hepáticas em trabalhadores de refinaria de petróleo Liver enzyme abnormalities among oil refinery workers

    Directory of Open Access Journals (Sweden)

    Fernando Martins Carvalho

    2006-02-01

    Full Text Available OBJETIVO: A exposição ocupacional típica de uma refinaria de petróleo pode alterar a função hepática de seus trabalhadores. Assim, o objetivo do estudo foi identificar fatores de risco de alterações em enzimas hepáticas em trabalhadores de uma refinaria de petróleo. MÉTODOS: Os trabalhadores de uma refinaria de petróleo, localizada em São Francisco do Conde, Estado da Bahia, eram submetidos a exames periódicos anuais de 1982 a1998. O estudo caso-controle investigou todos os 150 casos de indivíduos com alteração simultânea de gama-glutamil transferase e de alanino amino transferase, de pelo menos 10% acima do valor de referência. Como controles, foram selecionados 150 indivíduos sem quaisquer alterações de enzimas hepáticas ou de bilirrubinas, desde a sua admissão. Foram calculadas as razões de chance e respectivos intervalos de confiança de 95% a partir de modelos de regressão logística. RESULTADOS: Em todos os setores de produção, o risco de alteração de enzimas hepáticas foi significantemente mais elevado do que no setor administrativo (RC=5,7; IC 95%: 1,7-18,4, estando controlados os efeitos do álcool, obesidade e antecedentes médicos de hepatite. No período 1992-1994 foram registrados 89 casos, 88 deles provieram dos diversos setores da produção. CONCLUSÕES: A exposição ocupacional desempenha papel importante na determinação de alterações de enzimas hepáticas em trabalhadores do refino de petróleo, além dos fatores de risco eminentemente biológicos e/ou comportamentais como obesidade e o consumo de álcool.OBJECTIVE: Occupational exposure typical of an oil refinery may alter liver function among the workers. Thus, the objective of the study was to identify risk factors for liver enzyme abnormalities among oil refinery workers. METHODS: The workers at an oil refinery in Northeastern Brazil underwent routine annual medical examination from 1982 to 1998. This case-control study investigated all

  14. Búsqueda de enzimas lipolíticas termófilas y expresión en microorganismos mesófilos

    OpenAIRE

    López-López, Olalla

    2016-01-01

    [Resumen]El descubrimiento de enzimas lipolfticas con nuevas y/o mejores características es dave para la optimización de biotransformaciones de interés industrial o biotecnológico. Las enzimas termófilas presentan una serie de ventajas como mayor estabilidad frente a altas temperaturas, pH extremos y agentes desnaturalizantes. En este trabajo se estudiaron las enzimas lipolfticas de Thermus thermophilus HB27. Se seleccionaron dos enzimas lipollticas de la secuencia de su gen...

  15. A Testicular Leydig Cell Tumor with Azoospermia; Re-visited

    African Journals Online (AJOL)

    Mubeen

    Leydig tumor is relatively a rare testicular tumor but the most common non-germ cell gonadal tumor. It constitutes about. 1-3% of all testicular tumors. Clinically, it is usually presented as a testicular mass or with endocrine symptoms, which include gynecomastia, increased sex hormone levels, and other correlated symptoms ...

  16. Primary Testicular Lymphoma In Nigerian Males: Case Report and ...

    African Journals Online (AJOL)

    The prevalence of primary testicular lymphoma in this environment is similar to the prevalence elsewhere but the age at presentation differs. There is a need to be on the lookout for the disease not only in the elderly but also in young patients presenting with testicular masses. Key Words: testicular, lymphoma, Non- Hodgkin

  17. Testicular Microlithiasis: Report of Two Cases and Overview ...

    African Journals Online (AJOL)

    Testicular microlithiasis is a rare asymptomatic disease of the testis. It is associated with testicular tumors and a wide variety of other pathologies. The sonographic image which is the main tool for diagnosis is characteristic. Because of its high association with malignant testicular tumors incidentally discovered cases of ...

  18. TESTICULAR TUMORS IN PORT HARCOURT (A ten-year review)

    African Journals Online (AJOL)

    testicular tumors.12 '. RESULTS. A'total of twelve testicular tumours were reviewed. The yOungest patient was 3 years old while the oldest was. 48 years old. I. Table 1 ... 66.7% preschool age group and drivers had 16.7% each. Table I : Age distribution of; patients with testicular tumours. Age group Number Percent in years.

  19. β-Tocopherol (vitamin E) attenuates the testicular toxicity associated ...

    African Journals Online (AJOL)

    days after cryptorchidism induction, bilateral testicular weight, bilateral testicular volume, bilateral caudal epididymal sperm characteristics, bilateral testicular histology and serum hormone levels were all tested. Most of the above parameters were significantly lower (P < 0.05) in Groups B and C compared to Group A. The ...

  20. Case Report: A Testicular Leydig Cell Tumor with Azoospermia; Re ...

    African Journals Online (AJOL)

    Leydig tumor is relatively a rare testicular tumor but the most common non-germ cell gonadal tumor. It constitutes about 1-3% of all testicular tumors. Clinically, it is usually presented as a testicular mass or with endocrine symptoms, which include gynecomastia, increased sex hormone levels, and other correlated symptoms.

  1. Case series on testicular torsion: an educational emergency for sub ...

    African Journals Online (AJOL)

    305 records ... Testicular torsion remains a common surgical emergency of adolescent males presenting with sudden onset of intense scrotal pain in Africa. While the magnitude of testicular torsion is not known it has been identified as a cause of male infertility. Testicular loss in Africa is directly related to delay in surgery and ...

  2. Desenvolvimento de populações duplo-haplóides de cevada cervejeira associadas à atividade das enzimas (1-3, 1-4-β-glucanases

    Directory of Open Access Journals (Sweden)

    Janaína Endres Georg-Kraemer

    2011-05-01

    Full Text Available Populações duplo-haplóides apresentam especial vantagem para análises genéticas, uma vez que a informação que elas oferecem pode ser maximizada, devido ao fato que todos os locos encontram-se em homozigose. O objetivo deste trabalho foi o desenvolvimento de duas populações duplo-haplóides (DHs de cevada (Hordeum vulgare ssp. vulgare L. segregantes para a atividade das enzimas (1-3, 1-4-β-glucanases, através da técnica de cultura de anteras. Foram realizados dois cruzamentos com cultivares contrastantes para esta característica. As cultivares parentais selecionadas foram 'MN 698' e 'CEV 97047', para o desenvolvimento da população "malte verde" (MV, e 'Embrapa 127' e 'CEV 96025' para o desenvolvimento da população "malte seco" (MS. Foram cultivadas 10.734 anteras da população MS e 4.139 anteras da população MV. A população MV produziu 50% mais plântulas verdes quando comparada à população MS, refletindo a importância do genótipo na resposta à cultura de anteras e na regeneração. A maioria das plantas adultas duplo-haplóides foi obtida através da duplicação espontânea in vitro do genoma haplóide, ocorrendo em 66% das plantas da população MS e 76% das plantas da população MV. Também foram observadas, em menor frequência, plantas haplóides, triplóides e tetraplóides. Através da técnica de cultura de anteras, foram desenvolvidas 204 linhagens duplo-haplóides, das quais 72 linhagens são da população "malte seco" e 132 linhagens são da população "malte verde". Este material constitui um importante germoplasma para o melhoramento genético da cevada.

  3. Factors Influencing Rate of Testicular Salvage in Acute Testicular Torsion at a Tertiary Pediatric Center

    Directory of Open Access Journals (Sweden)

    Ramachandra, Puneeta

    2015-01-01

    Full Text Available Introduction: Studies have demonstrated that variables other than duration of symptoms can affect outcomes in children with acute testicular torsion. We examined demographic and logistical factors, including inter-hospital transfer, which may affect outcomes at a tertiary pediatric referral center. Methods: We reviewed charts of all pediatric patients with acute testicular torsion during a five-year period. Data were collected regarding age, insurance type, socioeconomic status, duration of symptoms prior to presentation, transfer status, time of day, time to surgical exploration, and testicular salvage. Results: Our study included 114 patients. Testicular salvage was possible in 55.3% of patients. Thirty-one percent of patients included in the study were transferred from another facility. Inter-hospital transfer did not affect testicular salvage rate. Time to surgery and duration of pain were higher among patients who underwent orchiectomy versus orchidopexy. Patients older than eight years of age were more likely to undergo orchidopexy than those younger than eight (61.5% vs. 30.4%, p=0.01. Ethnicity, insurance type, or time of day did not affect the testicular salvage rates. On multivariate analysis, only duration of symptoms less than six hours predicted testicular salvage (OR 22.5, p<0.001. Conclusion: Even though inter-hospital transfer delays definitive surgical management, it may not affect testicular salvage rates. Time to presentation is the most important factor in predicting outcomes in children with acute testicular torsion. [West J Emerg Med. 2015;16(1:190–194.

  4. ENZIMAS FIBROLÍTICAS EXÓGENAS EN LA DEGRADABILIDAD DE LA MATERIA SECA DE DOS Brachiarias

    Directory of Open Access Journals (Sweden)

    Juan Humberto Avellaneda Cevallos

    2016-12-01

    Full Text Available Se evaluó el efecto de un compuesto enzimático fibrolítico exógeno en la degradabilidad in situ de la materia seca (DISMS de henos de dos especies del género Brachiaria. Se emplearon cuatro bovinos Brown Swiss x Brahman (400 kg PV promedio fistulados en el rumen, en un diseño Cuadrado Latino 4x4 con arreglo factorial 2x2: (dos edades de cosecha: 28 y 56 d y dos niveles de enzima: 0 y 1 g de Fibrozyme® kg-1 de materia seca (MS. Se evaluaron cuatro tratamientos: T1: Brachiaria híbrido cultivar Mulato (B. ruziziensis clon 44-6 x B. brizantha CIAT 6297 y B. decumbens de 28 d con enzima; T2: Brachiaria Mulato y decumbens de 28 d sin enzima; T3: Brachiaria Mulato y decumbens de 56 d con enzima; T4: Brachiaria Mulato y decumbens de 56 d sin enzima. Se incubaron bolsas de Nylon con muestras de heno con un tamaño de 2 mm en el rumen a 0, 12, 24, 48 y 96 horas. La degradabilidad in situ de materia seca, no fue afectada por la aplicación del compuesto enzimático fibrolítico exógeno. Sin embargo, la degradabilidad de la MS fue mayor en las dos especies de Brachiarias por efecto de la menor edad de cosecha.

  5. Comet assay on mice testicular cells

    DEFF Research Database (Denmark)

    Sharma, Anoop Kumar

    2015-01-01

    for germ cell mutagens (Speit et al., 2009). The in vivo Comet assay is considered a useful tool for investigating germ cell genotoxicity. In the present study DNA strand breaks in testicular cells of mice were investigated. Different classes of chemicals were tested in order to evaluate the sensitivity...... of the comet assay in testicular cells. The chemicals included environmentally relevant substances such as Bisphenol A, PFOS and Tetrabrombisphenol A. Statistical power calculations will be presented to aid in the design of future Comet assay studies on testicular cells. Power curves were provided...... with different fold changes in % tail DNA, different number of cells scored and different number of gels (Hansen et al., 2014). An example is shown in Figure 1. A high throughput version of the Comet assay was used. Samples were scored with a fully automatic comet assay scoring system that provided faster...

  6. Enzimas fúngicas em dietas com alimentos alternativos para frangos de crescimento lento

    OpenAIRE

    Carla Fonseca Alves-Campos; Kênia Ferreira Rodriguês; Roberta Gomes Marçal Vieira Vaz; Giovana Cristina Giannesi; Gerson Fausto da Silva; Iberê Pereira Parente; Aline Ferreira Amorim; Aleane Francisca Cordeiro Barbosa; Mônica Calixto da Silva; Flávia Luzia Rodrigues Fonseca; Caroliny Costa Araújo; Valquíria Sousa Silva; Jefferson Rodrigues da Silva; Ecione Martins Silva; Márcio Luz Campos

    2017-01-01

    Su objetivo era abordar en esta revisión sobre las enzimas fúngicas y sus efectos sobre las dietas con alimentos alternativos para los pollos de crecimiento lento. La alimentación representa la mayor parte del coste total de la producción y reducir los costes y aumentar lucre del productor se han investigado alimento alternativo, tal como la torta de babasú, la torta de palmiste y bagazo de yuca, que demuestra el potencial para su uso em la alimentación pollos cateto, sin embargo, conun uso l...

  7. Nueve casos del sindrome HELLP (hemolisis, enzimas hepaticas Elevadas y plaquetopenia)

    OpenAIRE

    M. F. Capellino; S. Galetto; J.M. Sad Larcher; C. Travella; M. Ferreira; G. Ruiz Orrico

    2003-01-01

    El síndrome HELLP (hemólisis, enzimas hepáticas elevadas y plaquetopenia) descripto por Weinstein en 1982, se asocia a alta morbi-mortalidad materna y perinatal. Se evaluaron retrospectivamente las pacientes que presentaron síndrome HELLP entre marzo 1998 y marzo 2001 en el Hospital Privado de Córdoba. Se identificaron nueve pacientes con Síndrome HELLP (incidencia 2.3‰). La edad media de las pacientes fue 24.5 años (15-36) con una edad gestacional media de 34.5 semanas (29-40). Cinco pacient...

  8. Producción sustentable de enzimas fúngicas para interés industrial

    OpenAIRE

    Casas, Marcela

    2016-01-01

    El Dr. Edgardo Albertó, trabaja en el Instituto de Investigaciones Biotecnológicas IIB-INTECH. Fue el científico que recibió el Premio Ciencia y Comunidad en el área Actividad Productiva por el proyecto Plataforma Biotecnológica para la Producción Sustentable a bajo costo de enzimas fúngicas para interés industrial. En diálogo con CIC: Ciencia y Tecnología en la Provincia de Buenos Aires , describió detalles de su trabajo.

  9. Bilateral variations of renal and testicular arteries

    Directory of Open Access Journals (Sweden)

    Gurses IA

    2009-05-01

    Full Text Available The variations of the arteries that develop from the mesonephric arteries – including renal, gonadal and suprarenal arteries – are common. Understanding the anatomy of the vascular variations of this region is essential for the clinicians to perform procedures such as renal transplantation, interventional radiologic procedures and renal vascular operations more safely and efficiently. In order to facilitate the clinical approaches, we present a male cadaver with bilateral double renal arteries accompanied with doubled right testicular arteries and a left testicular artery of high origin, and we discuss the surgical, radiologic and possible embryologic aspects.

  10. Association of Torsion With Testicular Cancer: A Retrospective Study.

    Science.gov (United States)

    Uguz, Sami; Yilmaz, Sercan; Guragac, Ali; Topuz, Bahadır; Aydur, Emin

    2016-02-01

    Testicular torsion is a medical emergency that usually requires surgical exploration. However, testicular malignancy has been anecdotally reported with the association of torsion in surgical specimens, and the published data remain scant on the association of torsion with testicular tumors. By retrospective medical record review, we identified 32 patients who had been diagnosed with testicular torsion, 20 of whom had undergone orchiectomy. Of these 20 patients, 2 were diagnosed with a malignancy. Our study, the largest case series to date, has shown an association between testicular torsion and testicular cancer of 6.4%. Testicular torsion is a medical emergency that usually requires surgical exploration. However, testicular malignancy has been anecdotally reported in association with torsion in surgical specimens. However, the published data remain scant on the association between torsion and the presence of testicular tumors. The present retrospective study explored the association between torsion and testicular cancer in patients with testicular torsion undergoing orchiectomy during scrotal exploration. A medical record review was performed of patients who had had a diagnosis of testicular torsion from January 2003 to February 2015. The clinicopathologic characteristics of the patients were recorded. A total of 32 patients were identified. Their mean age was 21.1 years (range, 7-39 years). All the patients had unilateral testicular torsion, which affected the left side in 17 and the right side in 15. Manual detorsion was successful in 6 patients, and 26 patients underwent emergency surgery with testicular detorsion (6 fixation surgery and 20 orchiectomy). The type of incision was scrotal in 6, inguinal in 10, and unspecified in 4. Pathologic examination of the orchiectomy specimens showed malignancy in 2 cases (seminoma and malign mixed germ cell tumor). To the best of our knowledge, the present single-center case series is the largest case series to date of

  11. Tuberculous orchitis mimicking a testicular tumor: A diagnostic dilemma

    Directory of Open Access Journals (Sweden)

    Seema Dayal

    2014-03-01

    Full Text Available A 37-year old man presented with 5 months history of left scrotal mass and had underwent left orchidectomy following a presumptive diagnosis of testicular tumour. Histopathological diagnosis of testicular tuberculosis was subsequently made, which revealed a case of isolated TB orchitis. It signifies that the careful evaluation of patients with testicular mass is extremely significant for diagnostic accuracy, optimal treatment and avoiding unnecessary surgery in case of testicular tuberculosis. Simultaneously it will also help in early detection of testicular malignancies and vital for the clinicians to avoid negligence charges.

  12. Testicular microlithiasis in paediatric age; Microlitiasis testiculares en la edad pediatrica

    Energy Technology Data Exchange (ETDEWEB)

    Sanguesa, C.; Muro, D.; Dominguez, C. [Hospital Infantil La Fe. Valencia (Spain)

    2002-07-01

    To evaluate the eco graphic patters of testicular microlithiasis (TM) in paediatric age, its associations, clinical implications and how to manage them. We study four children between 11 and 13 years old with testicular microlithiasis. The echographic study is realized with a 7.5 Mhz linear probe. Two of the cases present bilateral microlithiasis. In five of the testicles, the presentation fits the pattern of classic testicular microlithiasis (CTM) ({>=} 5 echogenic foci per transducer field) and one testicle presents limited testicular microlithiasis (< 5 echogenic foci per transducer field). Distribution in the case of CTM is diffuse in two testes, peripheral in another two testicles and central in one of them. In one of the bilateral presentations, a biopsy of both testes is performed, observing intra tubular calcification in both. None of them has developed a tumor during the follow-up period, which ranges from nine months to four years. (Author) 21 refs.

  13. Fertilization after intracytoplasmic sperm injection with cryopreserved testicular spermatozoa.

    Science.gov (United States)

    Romero, J; Remohí, J; Mínguez, Y; Rubio, C; Pellicer, A; Gil-Salom, M

    1996-04-01

    To assess the possibility of cryopreserving testicular tissue extracted sperm for intracytoplasmic sperm injection (ICSI). A report of two cases. Our study was approved by the Ethical Committee at the Instituto Valenciano de Infertilidad. In vitro fertilization program at the Instituto Valenciano de Infertilidad. Two azoospermic patients with severe spermatogenic failure but with focal spermatogenesis on testicular biopsies. In both cases, a first ICSI attempt with fresh testicular biopsy extracted sperm was unsuccessful. Cryopreservation of testicular spermatozoa in 100-micro L "pills." Intracytoplasmic sperm injection with thawed testicular spermatozoa. Fertilization rate, cleavage rate, embryo quality, clinical pregnancy. Fertilization rates were 36 percent and 100 percent after ICSI with fresh testicular spermatozoa, and 63 percent and 57 percent after ICSI with cryopreserved testicular sperm. In both cases, cleavage rates and embryo quality were similar when using fresh and cryopreserved testicular spermatozoa. No clinical pregnancies were achieved. High fertilization rates can be obtained after ICSI with frozen-thawed testicular tissue extracted spermatozoa. Cryopreservation of testicular sperm may avoid repetition of testicular biopsies in azoospermic patients in whom the only source of spermatozoa is the testicle.

  14. Perspectiva en el desarrollo de las enzimas industriales a partir de la inteligencia tecnológica

    Directory of Open Access Journals (Sweden)

    Óscar Fernando Castellanos Domínguez

    2006-05-01

    Full Text Available El desarrollo de tecnologías emergentes implica el reto permanente de utilizar nuevas herramientas de gestión tecnológica. La ingeniería de enzimas y su respectiva tecnología, en el contexto de la biotecnología, es una de las áreas del conocimiento sobre las cuales reiterativamente se plantean grandes expectativas como posible generador de ventaja competitiva en economías emergentes como la colombiana. Sin embargo, varias décadas de investigación en este campo aún no arrojan resultados importantes en la producción de enzimas y su aplicación en procesos industriales. El presente artículo se propone aplicar los componentes de un sistema de inteligencia tecnológica para el desarrollo de la tecnología de enzimas. Inicialmente se hace énfasis en los procesos de cienciometría retomados en ejercicios de mapeo de patentes, vigilancia tecnológica y evaluación de proyectos colombianos en la red ScienTI de Colciencias, realizados para las enzimas utilizadas, tanto en la industria de alimentos en la obtención de hidrolizados, como en la industria de textiles. Se documenta un ejemplo de estudio Delphi en el contexto de la prospectiva de las enzimas industriales en la biotecnología en general. Posteriormente, se evidencia el aprendizaje que se puede generar a partir del análisis de un líder del sector, a través de un benchmarking organizacional. Finalmente, retomando las bases del sistema de inteligencia tecnológica se discute su aporte a la generación de estrategias de productividad y competitividad de la aplicación de las enzimas industriales.

  15. Enzimas fibrolíticas exógenas en la digestibilidad in vitro de cinco ecotipos de Brachiaria

    Directory of Open Access Journals (Sweden)

    Juan H. Avellaneda-Cevallos

    2007-01-01

    Full Text Available En zi mas fi bro lí ti cas exó ge nas en la di ges ti bi li dad in vi tro de cin co eco ti pos de Bra chia ria. Este experimento se llevó a cabo en la Estación Experimental del Colegio de Postgraduados, en Montecillo, Estado de México, México, durante el 25 abril y el 27 noviembre de 2002. Se usó la primera fase de la técnica de Tilley y Terry (3, 6, 12, 24, 48, 72 h incubación con el objetivo de medir el efecto de un compuesto enzimático fibrolítico exógeno (enzima; Fibrozyme®; 0 y 1,5 g enzima/kg MS en la digestibilidad in vitro (DIV de MS, FDN y FDA de henos de cinco ecotipos de Brachiaria [brizantha var. Toledo (BT; ruziziensis x decumbens CIAT 46024 (RD; decumbens var. Señal (DS; ruziziensis x brizantha CIAT 36061 cv. Mulato (RBM; brizantha var. Insurgente (BI]. La DIVMS a las 48 y 72 h, para 0 y 1,5 g enzima, fue mayor (p<0,05 para los ecotipos BT y BI, respecto a RD, DS y RBM. La DIVFDN a las 48 y 72 h, para 0 y 1,5 g enzima, fue mayor (p<0,05 para BT y BI, respecto a RD, DS y RBM. La enzima aumentó (p<0,05 la DIVFDN sólo para el ecotipo RD a las 72 h; además, incrementó la DIVFDA para BT a 12 h; BT y DS a 24 h; BT, RD y BI a 48 h. Por tanto, las enzimas fibrolíticas aumentaron la digestibilidad in vitro de la pared celular de cinco ecotipos de Brachiaria.

  16. Bilateral extracorporeal testicular ectopia: An extremely rare ...

    African Journals Online (AJOL)

    B.M. Abubakar

    2015 Pan African Urological Surgeons' Association. Production and hosting by Elsevier B.V. All rights reserved. Introduction. Extracorporeal testicular ectopia is very rare. It is also referred to as scrotoschisis [1]. The few cases described in the literature mostly refertounilateralscrotoschisis.Theactualetiologyoftheanomalyis.

  17. Abrogation by human menopausal gonadotropin on testicular ...

    African Journals Online (AJOL)

    Cisplatin is one of the most effective chemotherapeutic agents used in the treatment of cancer cells including testicular cancer. Human Menopausal Gonadotropin (HMG) is a natural hormone necessary for human reproduction. This hormone is a leading modality of treatment for infertility as it contains equal amount of ...

  18. Simultaneous acute appendicitis with right testicular torsion

    Directory of Open Access Journals (Sweden)

    Tanveer Akhtar

    2012-01-01

    Full Text Available We present a child with both acute appendicitis and torsion of the right testis presenting at the same time. Testicular torsion possibly occurring due to vomiting in acute appendicitis so far has not been reported in the literature.

  19. Testicular Cancer Survivorship : Research Strategies and Recommendations

    NARCIS (Netherlands)

    Travis, Lois B.; Beard, Clair; Allan, James M.; Dahl, Alv A.; Feldman, Darren R.; Oldenburg, Jan; Daugaard, Gedske; Kelly, Jennifer L.; Dolan, M. Eileen; Hannigan, Robyn; Constine, Louis S.; Oeffinger, Kevin C.; Okunieff, Paul; Armstrong, Greg; Wiljer, David; Miller, Robert C.; Gietema, Jourik A.; van Leeuwen, Flora E.; Williams, Jacqueline P.; Nichols, Craig R.; Einhorn, Lawrence H.; Fossa, Sophie D.

    2010-01-01

    Testicular cancer represents the most curable solid tumor, with a 10-year survival rate of more than 95%. Given the young average age at diagnosis, it is estimated that effective treatment approaches, in particular, platinum-based chemotherapy, have resulted in an average gain of several decades of

  20. Early life risk factors for testicular cancer

    DEFF Research Database (Denmark)

    Piltoft, Johanne Spanggaard; Larsen, Signe Benzon; Dalton, Susanne Oksbjerg

    2017-01-01

    PURPOSE: One established risk factors for testicular cancer is cryptorchidism. However, it remains unclear whether cryptorchidism is a risk factor in itself or whether the two conditions share common causes in early life (estrogen hypothesis), such as birth weight and birth order. The objective...

  1. Persistent Mullerian Duct Syndrome with Transverse Testicular ...

    African Journals Online (AJOL)

    inguinal side. The opposite scrotum is empty. PMDS with. TTE is rare. We report a case of PMDS with TTE discovered during surgery for a right inguinal hernia in a 25-year-old male. Key words: Mullerian inhibiting factor, persistent. Mullerian duct syndrome, transverse testicular ectopia. Address for correspondence: Dr. P.

  2. Primary testicular failure in Klinefelter's syndrome

    DEFF Research Database (Denmark)

    Aksglaede, Lise; Andersson, Anna-Maria; Jørgensen, Niels

    2007-01-01

    The diagnosis of androgen deficiency is based on clinical features and confirmatory low serum testosterone levels. In early primary testicular failure, a rise in serum LH levels suggests inadequate androgen action for the individual's physiological requirements despite a serum testosterone level ...

  3. Case report: Traumatic unilateral testicular rupture

    Directory of Open Access Journals (Sweden)

    Natasha J.G. Bauer

    2016-01-01

    Conclusion: Emergency assessment and diagnosis as well as scrotal exploration are important components of the management of acute testicular rupture. Analysis of the literature proves that timely surgical intervention is crucial; early intervention results in higher rates of preservation and avoids the need for an orchidectomy.

  4. Testicular Vasculitis: A Sonographic and Pathologic Diagnosis

    Directory of Open Access Journals (Sweden)

    Anuj Dixit

    2017-01-01

    Full Text Available Very little has been published about single-organ vasculitis of the testicle in the radiological literature. Consequently, it is a diagnosis that is unfamiliar to most radiologists. This case report describes the sonographic, pathologic, and laboratory findings of testicular vasculitis and reviews the available literature with regard to this subject.

  5. Bilateral Variations of the Testicular Vessels: Embryological ...

    African Journals Online (AJOL)

    Bilateral Variations of the Testicular Vessels: Embryological Background and Clinical Implications. Yogesh Diwan, Rikki Singal1, Deepa Diwan, Subhash Goyal1, Samita Singal2, Mausam Kapil1. Department of Anatomy, Indira Gandhi Medical College, Shimla, 1Surgery and 2Radiology, Maharishi Markandeshwer Institute ...

  6. Testicular dysgenesis syndrome and Leydig cell function

    DEFF Research Database (Denmark)

    Joensen, Ulla Nordström; Jørgensen, Niels; Rajpert-De Meyts, Ewa

    2008-01-01

    originating in early foetal life. TDS comprises various aspects of impaired gonadal development and function, including testicular cancer. A growing body of evidence, including animal models and research in human beings, points to lifestyle factors and endocrine disrupters as risk factors for TDS. We present...

  7. Review: Environmental endocrine disruptors of testicular function ...

    African Journals Online (AJOL)

    In the last 50 years the incidence of infertility, testicular and prostate cancers and associated maladies has increased significantly. Infertility now affects 15-20% of couples as opposed to 7-8% fifty years ago. Average sperm counts among adult men have decreased by 50% since 1938, with a decline of 2% every year from ...

  8. Misdiagnosed Adult Testicular Torsion: Case Report | Ndaguatha ...

    African Journals Online (AJOL)

    Adult testicular torsion is thought to be rare if not relatively unusual. The rarity could be an underestimation since there are many episodes of missed torsions and misdiagnosis with other conditions of acute scrotum despite the now widespread ultra sound availability that are being reported in the literature. Such a ...

  9. Study of intra testicular regulations of spermatogenesis ...

    African Journals Online (AJOL)

    Study of intra testicular regulations of spermatogenesis differentiation by ex-vivo approach. A Adaika, B Barenton, P Durand. Abstract. The aim of this work is to study the regulation of intratesticular during spermatogenesis ex vivo. To highlight the progress of spermatogenesis ex vivo, we developed two cell culture systems ...

  10. TESTICULAR TORSION: CASE REPORT R. T. KUREMU ...

    African Journals Online (AJOL)

    hi-tech

    2004-05-05

    May 5, 2004 ... Possible precipitating factors in testicular torsion include cold, exercise, sexual fore play, abnormal position during sleep or sitting, sudden closing of thighs, trauma, tight pants, coughing and defection(2). Early diagnosis remains a clinical challenge. Even though the clinical features of torsion are typical, the.

  11. The Correlation between Ultrasound Testicular Volume and Conventional Semen Parameters in Albanian Subfertile Males

    Directory of Open Access Journals (Sweden)

    Adrian Kristo

    2014-09-01

    CONCLUSION: Testicular volume has a direct correlation with semen parameters and the critical total testicular volume indicating normal testicular function is approximately 26.6 ml (the mean testicular volume 13.3 ml. The measurement of testicular volume can be helpful for assessing fertility at the initial physical examination.

  12. Aspectos neuroquimicos do parkinsonismo: revisão da literatura

    Directory of Open Access Journals (Sweden)

    James Pitagoras de Mattos

    1982-09-01

    Full Text Available Os autores fazem revisão da literatura sobre os dados neuroquímicos até agora encontrados na síndrome parkinsoniana. Analisam as alterações das concentrações da dopamina, da acetilcolina, da serotonina, da noradrenalina, de enzimas, do ácido neuroamínico e de alguns metais e amino-ácidos, concluindo pela provável existência de defeito neuroquimico mais generalizado na condição em apreço.

  13. EAU guidelines on testicular cancer: 2011 update.

    Science.gov (United States)

    Albers, Peter; Albrecht, Walter; Algaba, Ferran; Bokemeyer, Carsten; Cohn-Cedermark, Gabriella; Fizazi, Karim; Horwich, Alan; Laguna, Maria Pilar

    2011-08-01

    On behalf of the European Association of Urology (EAU), guidelines for the diagnosis, therapy, and follow-up of testicular cancer were established. This article is a short version of the EAU testicular cancer guidelines and summarises the main conclusions from the guidelines on the management of testicular cancer. Guidelines were compiled by a multidisciplinary guidelines working group. A systematic review was carried out using Medline and Embase, also taking Cochrane evidence and data from the European Germ Cell Cancer Consensus Group into consideration. A panel of experts weighted the references, and a level of evidence and grade of recommendation were assigned. There is a paucity of literature especially regarding longer term follow-up, and results from a number of ongoing trials are awaited. The choice of treatment centre is of the utmost importance, and treatment in reference centres within clinical trials, especially for poor-prognosis nonseminomatous germ cell tumours, provides better outcomes. For patients with clinical stage I seminoma, based on recently published data on long-term toxicity, adjuvant radiotherapy is no longer recommended as first-line adjuvant treatment. The TNM classification 2009 is recommended. These guidelines contain information for the standardised management of patients with testicular cancer based on the latest scientific insights. Cure rates are generally excellent, but because testicular cancer mainly affects men in their third or fourth decade of life, treatment effects on fertility require careful counselling of patients, and treatment must be tailored taking individual circumstances and patient preferences into account. Copyright © 2011 European Association of Urology. Published by Elsevier B.V. All rights reserved.

  14. Testicular cancer and HPV semen infection

    Directory of Open Access Journals (Sweden)

    Andrea eGarolla

    2012-12-01

    Full Text Available Testicular cancer represents the more frequent solid tumour affecting males aged 15-35 years.In the last decades, its incidence showed a progressive increased probably due to genetic and environmental factors. Despite exposure to some viruses such as HIV, HCV, EBV and HPV is frequently related to cancer development, there are no studies aimed to evaluate the possible implication of viral infections in the pathogenesis of testicular cancer. In this study we analyzed sperm parameters and prevalence of HPV on sperm in 155 testicular cancer patients at diagnosis (T-1, after orchiectomy (T0 and after 12 months from surgery or from the end of adjuvant treatments (T12. All patients showed a significantly higher prevalence of semen infection than controls (9.5% and 2.4% respectively and altered sperm parameters both at T-1 and T0. Considering sperm parameters, at T-1 we observed a reduction of progressive motility, and after orchiectomy patients showed a reduction of sperm concentration and count and a further worsening of motility. Thereafter, patients were assigned to three groups on the basis of medical option after surgery: S = surveillance, R = radiotherapy and C = chemotherapy +/- radiotherapy. At T12, untreated patients had an improvement of sperm parameters while R group and even more C group had a strong decrease of sperm number (p<0.01 both vs T0 and S group. Moreover, patients who received radio and/or chemotherapy had a very high prevalence of HPV semen infection (S: 7.7%, R: 30.8% and C: 61.5%. In conclusion, patients with testicular cancer had frequently altered sperm parameters and higher prevalence of HPV semen infection that were worsened after radio and chemotherapy. Because HPV infection is a risk factor for cancer development and it may further reduce fertility, we suggest screening for HPV in testicular cancer patients at diagnosis and particularly after adjuvant treatments.

  15. Testicular cancer and HPV semen infection.

    Science.gov (United States)

    Garolla, Andrea; Pizzol, Damiano; Bertoldo, Alessandro; Ghezzi, Marco; Carraro, Umberto; Ferlin, Alberto; Foresta, Carlo

    2012-01-01

    Testicular cancer represents the more frequent solid tumor affecting males aged 15-35 years. In the last decades, its incidence showed a progressive increased probably due to genetic and environmental factors. Despite exposure to some viruses such as HIV, HCV, EBV, and HPV is frequently related to cancer development, there are no studies aimed to evaluate the possible implication of viral infections in the pathogenesis of testicular cancer. In this study, we analyzed sperm parameters and prevalence of HPV on sperm in 155 testicular cancer patients at diagnosis (T-1), after orchiectomy (T0) and after 12 months from surgery or from the end of adjuvant treatments (T12). All patients showed a significantly higher prevalence of semen infection than controls (9.5% and 2.4% respectively,) and altered sperm parameters both at T-1 and T0. Considering sperm parameters, at T-1 we observed a reduction of progressive motility, and after orchiectomy patients showed a reduction of sperm concentration and count and a further worsening of motility. Thereafter, patients were assigned to three groups on the basis of medical option after surgery: S = surveillance, R = radiotherapy, and C = chemotherapy +/- radiotherapy. At T12, untreated patients had an improvement of sperm parameters while R group and even more C group had a strong decrease of sperm number (p HPV semen infection (S = 7.7%, R = 30.8%, and C = 61.5%). In conclusion, patients with testicular cancer had frequently altered sperm parameters and higher prevalence of HPV semen infection that were worsened after radio and chemotherapy. Because HPV infection is a risk factor for cancer development and it may further reduce fertility, we suggest screening for HPV in testicular cancer patients at diagnosis and particularly after adjuvant treatments.

  16. Palmito de pupunha (Bactris gasipaes Kunth. composição mineral e cinética de enzimas oxidativas Heart of palm (Bactris gasipaes Kunth.: mineral composition and kinetics of oxidative enzymes

    Directory of Open Access Journals (Sweden)

    Nathália Ottoboni Galdino

    2008-09-01

    Full Text Available A análise da presença de enzimas oxidativas como a peroxidase (POD e a polifenoloxidase (PPO e o controle da atividade destas enzimas são importantes na preservação e no processamento de alimentos. Este trabalho teve por objetivo determinar a atividade enzimática da polifenoloxidase (PPO e da peroxidase (POD do palmito de pupunha, bem como avaliar o comportamento destas enzimas frente ao tratamento térmico e assim calcular a cinética de inativação térmica das mesmas para suas porções termorresistente e termolábil. Para a extração de peroxidase (POD e polifenoloxidase (PPO de palmito, utilizou-se solução tampão fosfato de sódio 100 mM com diferentes pHs (5,5; 6,0; 6,5 e 7,0. O melhor pH de extração da POD foi 5,5 e da PPO, 6,5. Estes extratos foram tratados em diferentes temperaturas (65, 70, 75 e 80 °C por períodos de 1 a 10 minutos. A POD e a PPO sofreram um decréscimo de 70 e 80%, respectivamente, em relação às suas atividades iniciais. As energias de ativação, nas temperaturas estudadas, para a porção termolábil e termorresistente da peroxidase foram 154,0 e 153,0 kJ.mol-1, respectivamente, enquanto que para a polifenoloxidase foram 26,3 e 27,0 kJ.mol-1, respectivamente. Resultados apresentaram valores que estão dentro da faixa de energia de ativação reportada para o processo de inativação térmica de enzimas.Analysis of oxidative enzymes such as peroxidase (POD and polyphenoloxidase (PPO and the control of the activity of these enzymes are important in food preservation and also in food processing. The aim of this work was to determine polyphenoloxidase (PPO and peroxidase (POD enzymatic activity in heart of palm, as well as to evaluate enzyme behavior during thermal treatment, determining the kinetics of thermal inactivation of the heat resistant and heat labile portions. For the extraction of peroxidase (POD and polyphenoloxidase (PPO from the heart of palm solution, 100 mM sodium phosphate buffer with

  17. Uso de produto à base de enzima e levedura na dieta de bovinos: digestibilidade dos nutrientes e desempenho em confinamento Use of product from enzyme and yeast in the cattle diet: nutrients digestibility and performance in feedlot

    Directory of Open Access Journals (Sweden)

    Ralf Cezar de Queiroz

    2004-12-01

    Full Text Available Objetivou-se, com este trabalho, avaliar os efeitos da adição de diferentes níveis de enzima mais levedura na dieta de bovinos sobre a digestibilidade aparente dos nutrientes e o desempenho em confinamento, utilizando-se 18 animais machos, mestiços, de origem leiteira, com peso vivo (PV médio de 190±10 kg e 12 meses de idade, e 27 animais da raça Guzerá com PV médio de 325 kg e idade média de 27 meses. Os níveis de enzima mais levedura foram zero (controle, 5 g de enzima (E mais 5 g de levedura (L e 10 g de E mais 5 g de L por animal por dia. Todos os animais receberam a mesma dieta, constituída de 65% de silagem (50% de milho:50% de sorgo e 35% de concentrado composto de milho (24,6%, farelo de algodão (7,4%, uréia (1,2%, sal mineralizado (0,54% e calcário (0,86%. Esta dieta apresentava 12,4% de PB; 10,1 MJEM/kg MS e 41,1% de FDN. A adição de enzima mais levedura não alterou o consumo de MS (3,31% do PV ou 126,6 g/kg PV0,75, e CDA da MS (63,0%, PB (68,2%, EE (83,3%, CHOT (61,3%, FDN (47,2%, FDA (43,8% e valor de NDT (62,8%. O GMD e o CMS diminuíram de forma quadrática e a CA alimentar piorou linearmente, em função dos dias de confinamento. O fornecimento de enzima mais levedura para bovinos de corte não traz benefícios nutricionais ou de desempenho.The objetive of this work was to evaluate the effect of the addition of different enzyme levels plus yeast in the cattle diet on apparent nutrient digestibility and cattle performance in feedlot. Is was used 18 crossbred bulls (Taurino x Zebuino of milk dairy origin with average LW of 190±10 kg and age of 12 months and 27 steer of the Guzerá breed with LW and age of 325 kg and 27 months. The levels of enzyme plus yeast were zero (control, 5 g of enzyme (E plus 5 g of yeast (Y and 10 g E plus 5 g Y for animal day. All animals received the identical diet with 65% silage (50% corn:50% sorghum and 35% of concentrate composed of corn (24.6%, cottonseed meal (7.4%, urea (1

  18. Qualidade, fenóis e enzimas oxidativas de uva 'Itália' sob influência do cálcio, durante a maturação

    Directory of Open Access Journals (Sweden)

    LIMA MARIA AUXILIADORA COÊLHO DE

    2000-01-01

    Full Text Available Este trabalho foi realizado na Empresa Timbaúba Agrícola S.A., em Petrolina, PE, visando avaliar o efeito da aplicação, pré-colheita, de Ca, sobre a qualidade, teores de fenóis e atividade de enzimas oxidativas da uva (Vitis vinifera L. 'Itália', durante a maturação. Utilizaram-se doses de Ca de 0, 0,5, 1,0 e 1,5%, na forma de cloreto de Ca diidratado, via imersão por 10 segundos, na fase de mudança de cor e início de amolecimento das bagas (57 dias após a formação dos frutos, em cachos marcados. Realizaram-se avaliações aos 28, 43, 57, 72 e 92 dias após a formação dos frutos. O delineamento experimental foi inteiramente casualizado, num fatorial 4 x 5, com quatro repetições. Analisaram-se as variáveis: sólidos solúveis totais (SST, acidez total titulável (ATT, relação SST/ATT, pH, fenóis totais e atividade das enzimas polifenoloxidase (PPO e peroxidase (PDO. Com o aumento das doses de Ca, o teor de SST e a relação SST/ATT foram reduzidos. Entretanto, os valores de SST verificados atenderam à exigência de mercado. A atividade da PDO foi reduzida em 13,26% pelo Ca na dose de 1,0% e aumentada em 27,15% pelo Ca 1,5%, em comparação com a da testemunha. As demais variáveis não sofreram efeito do Ca exógeno.

  19. Perspectiva en el desarrollo de las enzimas industriales a partir de la inteligencia tecnológica

    National Research Council Canada - National Science Library

    Castellanos, Óscar; Ramírez, Diana C; Montañez, Víctor Mauricio

    2006-01-01

    .... La ingeniería de enzimas y su respectiva tecnología, en el contexto de la biotecnología, es una de las áreas del conocimiento sobre las cuales reiterativamente se plantean grandes expectativas como posible generador de ventaja competitiva...

  20. Caracterización bioquímica de la enzima bifuncional dihidrofolato reductasa-timidilato sintasa de Leishmania (Viannia y su evaluación como blanco molecular

    Directory of Open Access Journals (Sweden)

    Edison Osorio

    2013-09-01

    Full Text Available Introducción. La dihidrofolato reductasa (DHFR se ha utilizado como blanco molecular en tratamientos antibacterianos, anticancerígenos y antipalúdicos. También, actúa como blanco molecular en Leishmania; sin embargo, no existen reportes de la enzima bifuncional en especies de Leishmania (Viannia. Materiales y métodos. Se ha aislado y expresado en Escherichia coli el gen que codifica para la enzima bifuncional DHFR y la timidilato-sintasa (TS de Leishmania braziliensis. La enzima recombinante se purificó y caracterizó, y se evaluó el efecto inhibitorio de algunos antifolatos, así como de cuatro alcaloides aporfínicos. Resultados. El gen se compone de aproximadamente 1.560 pb y codifica un péptido de 58 kDa que contiene los dominios DHFR y TS ligados en una sola cadena polipeptídica. La enzima recombinante DHFR-TS, utilizando el dihidrofolato (H2F como sustrato, presentó valores de Km y Vmax de 55,35± 4,02 (media ± el error estándar de la media y de 0,02 ± 5,34 x 10-4, respectivamente. La enzimar DHFR-TS de L. braziliensis presentó valores de Ki para los antifolatos en el rango de micras. El metotrexato fue el inhibidor más potente de la actividad enzimática (Ki=22,0 mM en comparación del trimetoprim (Ki=33 mM y la pirimetamina (Ki=68 mM. Estos valores de Ki son significativamente más bajos en comparación con los obtenidos para los alcaloides aporfínicos. Conclusión. Los resultados muestran el efecto inhibitorio de los antifolatos sobre la actividad enzimática, lo cual indica que la rDHFR-TS de L. braziliensis podría ser un modelo para estudiar moléculas antiprotozoarias potenciales. doi: http://dx.doi.org/10.7705/biomedica.v33i3.1434

  1. ALTERACIONES EN LA PRODUCCIÓN mRNA DE ENZIMAS INTESTINALES DE CERDOS DURANTE VARIOS PERÍODOS POSDESTETE ALTERAÇÕES NA PRODUÇÃO DE mRNA DE ENZIMAS INTESTINAIS DOS SUINOS DURANTE DIVERSOS PERÍODOS APOS O DESMAME ALTERATIONS IN THE PRODUCTION mRNA OF INTESTINAL ENZYMES IN PIGS DURING SEVERAL POSTWEANING PERIODS

    Directory of Open Access Journals (Sweden)

    CAROLINA MONTOYA R.

    2012-12-01

    Full Text Available El objetivo de este estudio fue determinar la expresión génica de enzimas a nivel de enterocito de cerdos durante el período posdestete. El trabajo de campo se realizó con 16 cerdos destetados a los 21 días de edad en el Centro San Pablo, perteneciente a la Universidad Nacional de Colombia. Los animales fueron alimentados durante 10 días con una dieta basal que tuvo como componentes leche y algunos de sus derivados, y que además cumplía con todos los mínimos nutricionales. Los cerdos se sacrificaron escalonadamente los días 1, 5, 7 y 10 posdestete. Se realizó extracción completa del intestino delgado, el cual fue dividido en tres secciones (duodeno, yeyuno e íleon. Se evaluó la expresión génica de las enzimas digestivas por RT-PCR. El diseño estadístico empleado fue completamente al azar. Para las enzimas intestinales se presentaron disminuciones significativas, donde el día cinco posdestete presentó los menores valores(PO objetivo desta pesquisa foi determinar a expressão dos genes das aminopeptidases e dissacaridasesaonível do enterocito de suinos durante períodos apos o desmame. A experiência foi conduzida no centro de produção de San Pablo da Universidade Nacional de Colômbia (Medellín com 16 suinos desmamados aos 21 dias de vida. Os animais foram alimentados por 10 diascomuma dieta básica comleite e alguns de seus derivados, e aquele igualmente cumpriu todos os requisitos mínimos nutricionaís. Os suinos foram eutanasiados nos dias 1, 5, 7 y 10 pós-desmame. A extração completa do intestino pequeno foi realizada, que foi dividido emtrêsseções (duodeno, jejum e íleo. A expressão dos genes das enzimas digestivas por RT-PCR foi avaliada. O delineamento estatístico empregado foi completamente ao acaso. Para as enzimas intestinais as diminuições significativas foram apresentadas, onde no quinto diaapos o desmame apresentou os valores mais baixos (P0.01. O desmame precoce altera a expressão molecular das

  2. Beneficial value of testicular sperm extraction-AgarCyto in addition to the standard testicular biopsy for diagnosis of testicular germ cell tumors in nonobstructive azoospermia

    NARCIS (Netherlands)

    Hessel, M.L.; Ramos, L.; D'Hauwers, K.W.M.; Braat, D.D.M.; Hulsbergen-van de Kaa, C.A.

    2016-01-01

    OBJECTIVE: To study whether immunohistochemical detection of germ cell neoplasia in situ (GCNIS) in AgarCytos, made of the remnants of the testicular sperm extraction (TESE) specimen, is equally accurate as in a standard testicular biopsy. DESIGN: Prospective cohort study performed between January

  3. Association of testicular echogenicity, scrotal circumference, testicular volume and testosterone concentration in buffaloes

    Directory of Open Access Journals (Sweden)

    Henry D.M. Ayala

    2016-12-01

    Full Text Available ABSTRACT. Ayala H.D.M., Ribeiro H.F.L., Rolim Filho S.T., Silva E.V.C. & Vale W.G. Association of testicular echogenicity, scrotal circumference, testicular volume and testosterone concentration in buffaloes. [Associação entre a ecogenicidade, circunferência escrotal, volume testicular e concentração de testosterona em búfalos.] Revista Brasileira de Medicina Veterinária, 38(4:334-340, 2016. Programa de Pós-Graduação em Ciencia Animal, Universidade Federal do Pará, Rua Augusto Corrêa 1, Campus Universitário do Guamá, Belém, PA 66075-110, Brazil. E-mail wm.vale@hotmail.com This article aimed to discuss the changes in the testicular parenchyma, analyzed by the use of ultrasonography, and correlates them with the testicular biometric parameters and testosterone concentration in crossed Murrah x Mediterranean buffaloes. Nineteen buffaloes, with initial ages between 11 and 59 months,were submitted to fortnightly collections of semen for a period of six months. At each collection the testicular biometry and testicular echogenicity were evaluated as well as blood samples were also collected to measure the plasma testosterone levels. The data were submitted to analysis of variance by the GLM procedure, considering the age group fixed effect. The average data obtained were compared by the Duncan test, at 5% significance. There was a significant growth (P<0.05 of the scrotal circumference, which varied from 12.88±0.51 cmto 31.18±0.75 cm among animals aged 12 to 60 months, as well as testicular volume, which ranged from 30.28±17.37 to 611.96±38.69 cm³ among the animals. The echogenic intensity of the testicular parenchyma varied in pixels from 78.67±6.36 to 109.24±3.13 in animals aged 12 to 60 months respectively. In the animals with ages between 12 and 19 months was observed levels of testosterone considered being low, whereas in the animals from 20 to 21 months there was a progressive increase in the testosterone levels, which

  4. Dietas à base de milho e farelo de soja suplementadas com enzimas na alimentação de frangos de corte Corn and soybean meal based diets supplemented with enzymes in feed of broiler chicken

    Directory of Open Access Journals (Sweden)

    Delma Maria Torres

    2003-02-01

    Full Text Available Com o objetivo de verificar o efeito da adição de enzimas digestivas exógenas em dietas à base de milho e farelo de soja sobre o desempenho de frangos de corte, conduziu-se este experimento. Foram utilizados 819 pintos Hubbard em DIC e esquema fatorial 3 x 2 x 2 + 1 (enzimas, proteínas, níveis de energia e um tratamento testemunha com 3 repetições de 21 aves por parcela. Os níveis de enzimas foram 0,5; 1,0 e 1,5 g/kg de dieta, e os de proteína foram normais (21,18, 19,95 e 19,43% PB e reduzidos (20,54, 19,35 e 18,46% PB; os de energia também foram normais (3000, 3100 e 3200 kcal/kg de EM e reduzidos (2910, 3007 e 3040 kcal/kg de EM, respectivamente, para as fases inicial, de crescimento e final da criação, e para o testemunha, a ração continha níveis normais de EM e PB, sem enzimas. Os fatores avaliados foram ganho de peso, consumo de ração, conversão alimentar e fator europeu de produção. Pelos resultados, verificou-se manutenção do desempenho zootécnico das aves em razão da aplicação de enzimas, constatado pela não significância desses fatores aos 42 dias de idade e pela melhora na conversão alimentar, redução do consumo de ração e maior fator europeu de produção aos 21 dias de idade. O estudo da interação dos níveis de enzima x proteína mostrou que a adição de 0,5 g/kg de enzima na dieta com nível de proteína reduzido resultou em maior ganho de peso das aves. Conclui-se que é viável o uso de enzimas exógenas adicionadas em rações para frangos de corte.The objective of the experiment was verify the effect of the addition of exogen digestive enzymes in corn and soybean meal based diets on performance of broiler chickens. Were used 819 Hubbard chickens in completely randomized design, and 3 x 2 x 2 + 1 check factorial (enzyme, protein and energy levels and one treatment check with 3 replications, of the 21 birds by replicate. Enzyme levels were 0.5, 1.0 and 1.5 g/kg of diet, energy levels were

  5. Custo adaptativo da indução de resistência em feijoeiro mediada pela rizobactéria Bacillus cereus ou acibenzolar-S-metil: atividade de enzimas, síntese de fenóis e lignina e biomassa Fitness cost of induced resistance in bean plants by the rhizobacteria Bacillus cereus or acibenzolar-S-methyl: enzymes activities, phenol and lignin synthesis, and biomass

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    Odair José Kuhn

    2010-06-01

    Full Text Available Plantas que utilizam recursos para defesa na ausência de pragas ou patógenos, arcarão com custos energéticos que podem refletir na sua produtividade. Assim, teve-se por objetivo avaliar os custos adaptativos da indução de resistência, antes da chegada do patógeno, em feijoeiro induzido por um indutor biótico (Bacillus cereus e um abiótico (acibenzolar-S-metil, ASM, em 2, 3 ou 4 aplicações distribuídas ao longo do ciclo da cultura. Avaliou-se o efeito protetor contra a bactéria Xanthomonas axonopodis pv. phaseoli, além da atividade de peroxidase, quitinase, β-1,3-glucanase, síntese de lignina, fenóis e crescimento com base na matéria seca. Observou-se que os indutores protegeram a cultura contra X. axonopodis pv. phaseoli com base na redução da severidade. O ASM aumentou a atividade de peroxidase, quitinase e β-1,3-glucanase, enquanto que o B. cereus aumentou apenas a peroxidase. O ASM aumentou a síntese de lignina e B. cereus não, enquanto que ASM diminuiu teor de fenóis e B. cereus não. O ASM reduziu a biomassa da planta, o que não ocorreu em plantas induzidas por B. cereus. Portanto, a resistência induzida por ASM apresenta elevado custo associado, enquanto que por B. cereus apresenta baixo custo, necessitando a indução de resistência ser melhor explorada e estudada para potencializar seu uso em feijoeiro.Plants that use resources to defend themselves in the absence of pests or pathogens will pay off with energy costs that can reflect in the productivity. Thus, the objective of this work was to evaluate the fitness costs of the resistance induced in bean plants, before the presence of the pathogen, by using biotic (Bacillus cereus and abiotic (acibenzolar-S-methyl, ASM inducers, applied 2, 3 or 4 times during the cycle of the culture. The protecting effect was evaluated against the bacterium Xanthomonas axonopodis pv. phaseoli. The activities of peroxidase, chitinase and β-1,3-glucanase, lignin and phenol

  6. Phytase enzyme in diets containing defatted rice bran for growing swine Enzima fitase dietas com farelo de arroz desengordurado para suínos em crescimento

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    José Aparecido Moreira

    2003-12-01

    Full Text Available Organic phosphorus is poorly utilized by monogastric animals because they lack phytase, the enzyme that cleaves the ortho-phosphate groups from the phytate molecule. Diets fed to pigs are supplemented with inorganic P, and this can increase environmental pollution and diet costs. Sixty mixed sex, half-breed pigs, were used to evaluate the effect of increasing dietary levels of phytase (253, 759, 1265 and 1748 PU kg-1 feed on animal performance as compared to a control without phytase but supplemented with dicalcium phosphate. Enzyme levels did not affect daily feed intake, food conversion, average daily weight gain, plasma P and Ca, calcium and phosphorus in bone ash, and the calcium/phosphorus ratio in the plasma and bones. A quadratic relationship between phytase levels and the percentages of P and Ca in bone ash was observed, reaching a maximum at the 880 and 879 PU levels, respectively. Animals fed diets containing phytase presented low plasma P values when compared to the control, but no effects were observed for the regression analysis. Using 759 PU phytase in rations containing corn, soybean bran and defatted rice bran for growing pigs can eliminate the use of traditional sources of P.Os animais monogástricos não aproveitam eficientemente o P orgânico das dietas, pois não sintetizam a enzima fitase, sendo necessária a suplementação das rações com P inorgânico, podendo elevar o custo das dietas e a poluição ambiental. Foram utilizados 60 leitões mestiços (machos castrados e fêmeas para avaliar a eficácia dos níveis dietéticos crescentes da enzima fitase (253, 759, 1265 e 1748 UF kg-1 de ração sobre os parâmetros de desempenho e comparar com o tratamento testemunha que diferia dos demais por não conter fitase e por conter fosfato bicálcico. Os níveis da enzima fitase não afetaram o consumo diário de ração, conversão alimentar, ganho diário de peso, P e Ca no plasma, cinzas no osso e relação cálcio e f

  7. Desempenho de Frangos de Corte Alimentados com Dietas à Base de Milho e Farelo de Soja, com ou sem Adição de Enzimas Performance of Broilers Fed Corn Soybean Meal Based Diets, with or without Inclusion of Enzymes

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    Geferson Fischer

    2002-01-01

    Full Text Available O experimento foi conduzido com o objetivo de avaliar o efeito da inclusão de um composto multi-enzimático à base de proteases, amilases e celulases (Vegpro, adicionado na proporção de 1 kg para cada 200 kg de farelo de soja, na dieta de frangos de corte. Foram utilizados 2240 pintos, fêmeas, da marca comercial Ross, submetidos a oito tratamentos, com sete repetições. O delineamento experimental utilizado foi em blocos ao acaso, com parcelas divididas. Os tratamentos foram os seguintes: T1 (controle positivo -- ração normal, sem enzima, T2 (controle negativo -- ração com níveis energético, protéico e aminoacídico do farelo de soja, superestimados em 5%, sem enzima, T3 (ração normal, sem enzima até 28 dias, com enzima de 29 a 35 dias, T4 (ração normal, sem enzima até 21 dias, com enzima de 22 a 35 dias, T5 (ração normal, com enzima, T6 (até os 28 dias, ração normal com enzima, e ração superestimada com enzima, dos 29 aos 35 dias, T7 (ração normal, com enzima até os 21 dias e ração superestimada, com enzima, do 22º ao 35º dia e T8 (ração superestimada com enzima. Na primeira fase experimental, à exceção do T2, não houve diferença significativa entre os tratamentos para peso corporal médio, ganho médio de peso e consumo de ração, pois não foi observado efeito da inclusão de enzima. A conversão alimentar diferiu estatisticamente a 5%. Na quarta semana experimental, novamente o T2 foi o único a diferir a 5% para peso corporal médio e ganho médio de peso. Para consumo de ração e conversão alimentar, os tratamentos não diferiram significativamente. Na última semana, foram notadas as maiores diferenças entre os tratamentos. Verificou-se que a inclusão do complexo multi-enzimático não proporcionou ganhos ao desempenho de frangos de corte.This study was run to evaluate the effect of inclusion of an enzymatic cocktail, containing proteases, amilases and cellulases (Vegpro in broiler diets. The

  8. Enzimas proteolíticas relacionadas con la enfermedad periodontal inflamatoria

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    Bárbara E. García Triana

    1998-08-01

    Full Text Available La enfermedad periodontal inflamatoria ocasiona la destrucción de los tejidos que protegen y soportan al diente; es por eso de gran importancia el papel que pueden desempeñar las enzimas que sean capaces de degradar la matriz del tejido conectivo, como las enzimas proteolíticas. Existen evidencias de que las metaloproteinasas de la matriz, las proteasas leucocitarias y las bacterianas, pueden participar en la etiopatogenia de esta enfermedad. Su acción es regulada en los tejidos, por la presencia de inhibidores específicos, de manera que un desbalance proteasas-inhibidores a favor de los primeros, conduciría a la destrucción de las proteínas de la matriz del tejido conectivo. A su vez, en la actividad proteolítica influyen diferentes factores, que de manera global, inducen un fenotipo degradativo o formativo, y que por lo tanto, podrían estar involucrados en la etiopatogenia de la enfermedad periodontal inflamatoria.The periodontal disease brings about the destruction of the protective and supporting tissues of the teeth, therefore, the role of enzymes capable of degrading connective tissue matrix is of great importance. There are evidences of the possible involvement of the matrix metalloproteinases, leukocyte proteases and bacterial proteases in the pathogenesis of such disease. Their action is controlled by specific inhibitors in the tissues. This means that any protease-inhibitor imbalance favouring the presence of proteases may lead to the destruction of matrix connective tissue. In turn, proteolytic activity is influenced by different factors that globally induce a degradative or formative phenotype, and thus, may be involved in the pathogenesis of the periodontal disease.

  9. A Rare Complication of Brucellosis: Testicular Abscess

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    Ümit Gul

    2016-01-01

    Full Text Available Brucellosis is a zoonosis caused by Brucella species. Brucella epididymo-orchitis had been reported in up to 20% of patients with brucellosis. This case was a male patient who developed Brucella epidiymo-orchitis and testicular abscess. He had fever, arthralgia and his right epididymis and right testicle were enlarged and tender. Ultrasound evaluation showed hypertrophy of the right epididymis and testis and moreover hypoechoic area within the testis. Brucella serology was positive and the patient did not respond completely to treatment with streptomycin, doxycycline, and rifampicina. Unilateral orchidectomy was decided. In areas where brucella infection is endemic brucella epididymo-orchitis should be considered in the differential diagnosis. Effective and rapid treatment is important. It should be noted that these patients may develop testicular abscess.

  10. Oxidative enzymes activities from Lentinula edodes on agribusiness substrate / Atividade de enzimas oxidativas do Lentinula edodes em substratos agroindustriais

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    Claudio Perani

    2009-12-01

    Full Text Available Basidyomycete Lentinula edodes has its related enzymatic activity mainly on the agribusiness waste kind used as a substrate. The objective of this work was to verify the activity of oxidative enzymes lacase (Lac, lignina peroxidase (LiP and manganese peroxidase (MnP of three L. edodes strains, in stationary system, cultivated the 25 ºC, in the absence of light, in substrates wtih 20% of bran of rice, 1% of CaCO3 and 79% of rice husk (CA, eucalyptus sawdust (SE, cassava bagasse (BM and sugarcane bagasse (BC, adjusted to 60% of humidity. The Lac and MnP activities were bigger in eucalyptus sawdust (SE and sugarcane bagasse (BC. The LiP activity was not induced for tested substrates. The rice husk (CA and cassava bagasse (BM substrates, although are not adequate to produce Lac or MnP, can be used as additives to increase the porosity, air availability and easy metabolism polysaccharides.O basidiomiceto Lentinula edodes tem sua atividade enzimática relacionada, principalmente, ao tipo de resíduo agroindustrial utilizado como substrato. O objetivo deste trabalho foi verificar a atividade das enzimas oxidativas lacase (Lac, lignina peroxidase (LiP e manganês peroxidase (MnP de três linhagens de L. edodes, em sistema estacionário, cultivadas a 25 ºC, na ausência de luz, em substratos compostos de 20% de farelo de arroz, 1% de CaCO3 e 79% de casca de arroz (CA, serragem de eucalipto (SE, bagaço de mandioca (BM e bagaço de cana-de-açúcar (BC, ajustados à 60% de umidade. As atividades de Lac e MnP foram maiores nos substratos a base de serragem de eucalipto (SE e bagaço de cana-de-açúcar (BC. A atividade de LiP não foi induzida pelos substratos testados. Os substratos à base de casca de arroz (CA e bagaço de mandioca (BM, não se mostraram adequados na indução da produção de Lac ou MnP, mas podem ser utilizados como aditivos para aumentar a porosidade, disponibilidade de ar e fornecer polissacarídeos de fácil metabolização.

  11. A Rare Cause of Testicular Metastasis: Upper Tract Urothelial Carcinoma

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    Alper Nesip Manav

    2014-01-01

    Full Text Available Metastatic testicular cancers are rare. Primary tumor sources are prostate, lung, and gastrointestinal tract for metastatic testicular cancers. Metastasis of urothelial carcinoma (UC to the testis is extremely rare. Two-thirds of upper tract urothelial carcinoma (UTUC is of invasive stage at diagnosis and metastatic sites are the pelvic lymph nodes, liver, lung, and bone. We report a rare case of metastatic UTUC to the testis which has not been reported before, except one case in the literature. Testicular metastasis of UC should be considered in patients with hematuria and testicular swelling.

  12. Perspectives on testicular germ cell neoplasms.

    Science.gov (United States)

    Cheng, Liang; Lyu, Bingjian; Roth, Lawrence M

    2017-01-01

    Our knowledge of testicular germ cell neoplasms has progressed in the last few decades due to the description of germ cell neoplasia in situ (GCNIS) and a variety of specific forms of intratubular germ cell neoplasia, the discovery of isochromosome 12p and its importance in the development of invasiveness in germ cell tumors (GCTs), the identification of specific transcription factors for GCTs, and the recognition that a teratomatous component in mixed GCT represents terminal differentiation. Isochromosome 12p and 12p overrepresentation, collectively referred to as 12p amplification, are fundamental abnormalities that account for many types of malignant GCTs of the testis. Embryonal carcinoma is common in the testis but rare in the ovary, whereas the converse is true for mature cystic teratoma. Spermatocytic tumor occurs only in the testis; it has not been described in the ovary or extragonadal sites. The origin of ovarian mature cystic teratoma is similar to that of prepubertal-type testicular teratoma and dermoid cyst at any age in that it arises from a nontransformed germ cell, whereas postpubertal-type testicular teratoma arises from a malignant germ cell, most commonly through the intermediary of GCNIS. Somatic neoplasms, often referred to as monodermal teratomas, arise not infrequently from mature cystic teratoma of the ovary, whereas such neoplasms are rare in testicular teratoma with the exception of carcinoid. Integration of classical morphologic observations and emerging novel molecular studies will result in better understanding of the pathogenesis of GCTs and will optimize patient therapy. Copyright © 2016 Elsevier Inc. All rights reserved.

  13. Efecto del almidón dañado sobre las propiedades de las masas panarias y la calidad de los panificados

    OpenAIRE

    Barrera, Gabriela Noel

    2014-01-01

    Tesis (DCI)--FCEFN-UNC, 2014 Trata la influencia del contenido de almidón dañado sobre la calidad de las harinas para elaborar productos de panificación y analizar los efectos ocasionados por el uso de enzimas en la atenuación de los inconvenientes provocados por el almidón dañado

  14. Desenvolvimento testicular, espermatogênese e concentrações hormonais em touros Angus Testicular development, spermatogenesis and hormonal concentrations in Angus bulls

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    Gyselle Viana Aguiar

    2006-08-01

    Full Text Available Este estudo foi realizado com a finalidade de avaliar a evolução das secreções hormonais e do epitélio seminífero em touros da raça Angus de 10 a 38 semanas de idade. Foram castrados 1 a 5 animais em intervalos de quatro semanas (total de 25 touros para coleta de amostras do parênquima testicular e do plasma sanguíneo. As variáveis relacionadas ao crescimento testicular, aos aspectos quantitativos da espermatogênese e aos níveis hormonais foram transformadas em logaritmo e avaliadas por meio de análise de variância. O diâmetro dos testículos e túbulos seminíferos e o peso testicular apresentaram variações mais acentuadas após 26 semanas de idade. A porcentagem do parênquima testicular ocupado pelos túbulos seminíferos aumentou de 49,3 para 75,2% durante o experimento. A maioria dos túbulos (>90% apresentou-se com células de Sertoli somente entre 10 e 14 semanas, mas na 18ª (13,8±1,7% e 22ª semanas (19±1%, o número de túbulos com gonócitos e espermatogônias aumentou em relação às semanas iniciais. Espermatogônias intermediárias e B predominaram na 26ª semana (24,5±8,2% e a porcentagem de túbulos com espermatócitos foi mais elevada na 30ª semana (42,3±9,9%. Espermátides arredondadas foram detectadas partir da 26ª semana e, na 38ª semana, 62,3±1,5% dos túbulos seminíferos continham espermátides alongadas ou maduras. As variações mais acentuadas no crescimento testicular e, principalmente, no peso testicular após as 26 semanas coincidiram com o estabelecimento da meiose, com as alterações morfológicas do núcleo e nucléolo das células de Sertoli (indicativos do processo de diferenciação das mesmas, com os níveis reduzidos de androstenediona e os incrementos significativos de testosterona e estradiol 17beta. As associações entre o crescimento testicular e os níveis de FSH e LH na circulação periférica foram menos evidentes.This study aimed to evaluate changes in hormone secretion

  15. Comet assay on mice testicular cells

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    Anoop Kumar Sharma

    2015-05-01

    Full Text Available Heritable mutations may result in a variety of adverse outcomes including genetic disease in the offspring. In recent years the focus on germ cell mutagenicity has increased and the “Globally Harmonized System of Classification and Labelling of Chemicals (GHS” has published classification criteria for germ cell mutagens (Speit et al., 2009. The in vivo Comet assay is considered a useful tool for investigating germ cell genotoxicity. In the present study DNA strand breaks in testicular cells of mice were investigated. Different classes of chemicals were tested in order to evaluate the sensitivity of the comet assay in testicular cells. The chemicals included environmentally relevant substances such as Bisphenol A, PFOS and Tetrabrombisphenol A. Statistical power calculations will be presented to aid in the design of future Comet assay studies on testicular cells. Power curves were provided with different fold changes in % tail DNA, different number of cells scored and different number of gels (Hansen et al., 2014. An example is shown in Figure 1. A high throughput version of the Comet assay was used. Samples were scored with a fully automatic comet assay scoring system that provided faster scoring of randomly selected cells.

  16. Cryopreservation of canine ovarian and testicular fibroblasts.

    Science.gov (United States)

    Yu, Il-Jeoung; Leibo, S P; Songsasen, Nucharin; Dresser, Betsy L; Kim, In-Shik

    2009-01-01

    To derive a practical procedure to store canine somatic cells, fibroblasts isolated from testicular or ovarian tissues were cryopreserved in 1.2 M ethylene glycol or in 1.2 M dimethylsulfoxide prepared in Dulbecco's Modified Eagle Medium as cryoprotectants, and were frozen either in plastic straws or vials. Thawed cells were cultured for 24 hr at 38.5 degree C in a humidified atmosphere of 5 percent CO2 95 percent air, and then their membrane integrity was assayed with a double fluorescent stain, Fertilight. In addition, frozen-thawed fibroblasts were cultured for 4 days, and then their functional survival was measured after staining small colonies with trypan blue. After freezing and thawing, membrane integrity of testicular fibroblasts was 55-70 percent and functional survival ranged from 20-40 percent. With frozen-thawed ovarian cells, the average membrane integrity was 55-75 percent and the average functional survival was 35-40 percent. When frozen in ethylene glycol, functional survival of ovarian fibroblasts was significantly higher than that of testicular cells (P less than 0.05). These methods should prove useful to preserve cells collected from canids in the wild.

  17. Testicular Histomorphometric Evaluation of Zebu Bull Breeds

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    Paulo Antônio Terrabuio Andreussi

    2014-12-01

    Full Text Available The objective of this study was to evaluate the quantitative histology and testicular biometrics in zebu bulls of different breeds. Testicular fragments of Nelore (n=10, Polled Nelore (n=6, Gir (n=5, Guzerat (n=5 and Tabapuã bulls (n=5 were used. The fragments were perfusion-fixed in Karnovsky solution, embedded in glycol methacrylate and stained with toluidine blue-1% sodium borate. The Nelore animals had a higher tubular volumetric proportion (85.2% and greater height of the seminiferous epithelium (73.2 µm than the Gir, Guzerat and Tabapuã breeds. The Nelore animals also had a higher volumetric proportion of Leydig cells (5.2% than the Guzerat and Tabapuã breeds. There was no significant difference for any of these parameters between the Nelore and Polled Nelore breeds. The gonadosomatic index, seminiferous tubule diameter, cross-sectional area of the seminiferous tubule and tubule length (total length and length per gram of testicular parenchyma did not vary among the breeds studied. The morphometric parameters evaluated suggested that the genetic selection applied to the Nelore and Polled Nelore breeds improved the efficiency of spermatogenesis in these breeders.

  18. Testicular Cancer Presenting as Gastric Variceal Hemorrhage

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    Carlos Eduardo Salazar-Mejía

    2017-01-01

    Full Text Available Testicular cancer is the most common solid malignancy affecting males between the ages of 15 and 35. The symptomatology caused by this tumor varies according to the site of metastasis. We present the case of a 26-year-old male who arrived to the emergency department with hematemesis. He had no previous medical history. On arrival, we noted enlargement of the left scrotal sac. There was also a mass in the left scrotum which provoked displacement of the penis and right testis. The serum alpha-fetoprotein level was 17,090 ng/mL, lactate dehydrogenase was 1480 U/L, and human chorionic gonadotropin was 287.4 IU/mL. Upper endoscopy revealed a type 1 isolated gastric varix, treated with cyanoacrylate. A CT scan showed extrinsic compression of the portal vein by lymphadenopathy along with splenic vein partial thrombosis, which caused left-sided portal hypertension. Neoadjuvant chemotherapy was started with etoposide and cisplatin, and seven days later the patient underwent left radical orchiectomy. A postoperative biopsy revealed a pure testicular teratoma. Noncirrhotic left portal hypertension with bleeding from an isolated gastric varix secondary to metastasic testicular cancer has not been described before. Clinicians must consider the possibility of malignancy in the differential diagnosis of a young man presenting with unexplained gastrointestinal bleeding.

  19. Perinatal testicular torsion and medicolegal considerations.

    Science.gov (United States)

    Massoni, F; Troili, G M; Pelosi, M; Ricci, S

    2014-06-01

    Perinatal testicular torsion (PTT) is a very complex condition because of rarity of presentation and diagnostic and therapeutic difficulties. In presence of perinatal testicular torsion, the involvement of contralateral testis can be present also in absence of other indications which suggest the bilateral involvement; therefore, occurrences supported by literature do not exclude the use of surgery to avoid the risk of omitted or delayed diagnosis. The data on possible recovery of these testicles are not satisfactory, and treatment consists of an observational approach ("wait-and-see") or an interventional approach. The hypothesis of randomized clinical trials seems impracticable because of rarity of disease. The authors present a case of PTT, analyzing injuries due to clinical and surgical management of these patients, according to medicolegal profile. The delayed diagnosis and the choice of an incorrect therapeutic approach can compromise the position of healthcare professionals, defective in terms of skill, prudence and diligence. Endocrine insufficiency is an unfortunate event. The analysis of literature seems to support, because of high risk, a surgical approach aimed not only at resolution of unilateral pathology or prevention of a relapse, but also at prevention of contralateral testicular torsion.

  20. Doppler sonographic findings in testicular microlithiasis

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    Selim Serter

    2008-08-01

    Full Text Available OBJECTIVE: The aim of this prospective study was to compare the resistive index (RI values, which is a parameter of testicular parenchymal perfusion, in testicular microlithiasis (TM cases and normal cases. MATERIALS AND METHODS: 2179 volunteers, all healthy men (17-42 years of age from the Annual Army Reserve Officer Training Corps training camp were included in the study. A screening scrotal ultrasound was performed and all men diagnosed with TM underwent a scrotal Doppler ultrasonography scan (US. US examinations were performed for subjects with TM and without TM as a control group and RI was determined. RESULTS: 53 men with TM were identified in the 2179 US. Spectral Doppler examination was applied to 50 randomly selected cases (100 testicles without TM and 92 testicles with TM, 39 cases (78 testicles with bilateral and 14 cases with unilateral involvement. However, 48 normal testicles (17 bilateral and 14 unilateral and 47 testicles with TM (15 bilateral and 17 unilateral, 10 of which were cases with bilateral TM where flow from the centripetal artery could be obtained and analyzed were included in the statistical analysis for resistive indices. There was no significant difference regarding the RI and spectral examinations between subjects with and without TM. An interesting finding was the twinkling artifact observed in three cases. CONCLUSION: Microliths did not alter the RI values and thus had no influence on testicular perfusion on Doppler US examination.

  1. SERUM ACTIVITIES OF ASPARTATE AMINOTRANSFERASE, CREATINE KINASE AND LACTATE DEHYDROGENASE IN HORSES WITH COLIC ATIVIDADE SÉRICA DAS ENZIMAS ASPARTATO AMINOTRANSFERASE, CREATINA QUINASE E LACTATO DESIDROGENASE EM EQÜINOS COM CÓLICA

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    Aureo Evangelista Santana

    2008-12-01

    Full Text Available Seventy equines distributed in two experimental groups were used, G1 (20 healthy equines, and G2 (50 equines with colic. Blood samples were obtained by jugular vein puncture in ten different moments. The variables aspartate aminotransferase (AST, creatine kinase (CK, and lactate dehydrogenase (LDH were determined by spectrophotometric assay using specific reagents. The average values presented by the animals of the G2 for variables CK, AST, and LDH were higher (P<0.05 than the values presented by the animals of the G1 in all the evaluation moments. The results showed for G2 animals suggest the existence of acute muscle injury. The muscle injuries in equines with colic were attributed to the tissue hypoperfusion, and the muscular damage.

    KEY WORDS: Acute abdomen, horses, muscles enzyme. De setenta eqüinos, distribuídos em dois grupos experimentais – G1 (vinte eqüinos hígidos e G2 (cinqüenta eqüinos com cólica –, colheram-se amostras de sangue em dez diferentes momentos, mediante punção da jugular, para a determinação da atividade sérica das enzimas aspartato aminotransferase (AST, creatina quinase (CK e lactato desidrogenase (LDH. Os valores médios apresentados pelos animais do G2, para as variáveis CK, AST e LDH, foram superiores (P<0,05 aos valores médios apresentados pelos animais do G1 em todos os momentos de avaliação. Os resultados apresentados pelos animais com cólica (G2 sugerem a existência de lesão muscular aguda, porém com tendência a cura, e foram atribuídos a hipoperfusão tecidual e a traumas musculares. A análise seriada das enzimas CK, AST e LDH auxilia tanto no diagnóstico de lesões musculares em eqüinos com cólica como no acompanhamento da evolução do processo de cura.

    PALAVRAS-CHAVES: Abdômen agudo, cavalos, enzimas musculares.

  2. Identificación y caracterización de enzimas involucradas en la regulación de los niveles de AMPc en Trypanosoma cruzi

    OpenAIRE

    D’Angelo, Maximiliano A.

    2003-01-01

    En este trabajo se caracterizó la adenilil ciclasa TczAC. Se determinó que el gen que codifica para esta enzima se encuentra altamente conservado con los genes de adenilil ciclasas identificados en otros tripanosomátidos, es parte de una familia multigénica y se expresa en todos los estadios del ciclo de vida de T. cruzi. Se determinó que el producto de este gen es una enzima funcional capaz de complementar una cepa de levaduras carente de actividad adenilil ciclasa. Esta enzima es específica...

  3. Testicular cancer trends as 'whistle blowers' of testicular developmental problems in populations

    DEFF Research Database (Denmark)

    Skakkebaek, N E; Rajpert-De Meyts, Ewa; Jørgensen, N

    2007-01-01

    Recently a worldwide rise in the incidence of testicular germ cell cancer (TGCC) has been repeatedly reported. The changing disease pattern may signal that other testicular problems may also be increasing. We have reviewed recent research progress, in particular evidence gathered in the Nordic...... in TGCC rates of a population may be 'whistle blowers' of other reproductive health problems. As cancer registries are often of excellent quality - in contrast to registries for congenital abnormalities - health authorities should consider an increase in TGCC as a warning that other reproductive health...... problems may also be rising....

  4. Post-testicular sperm maturation and identification of an epididymal protein in the Japanese quail (Coturnix coturnix japonica).

    Science.gov (United States)

    Nixon, Brett; Ewen, Katherine A; Krivanek, Klara M; Clulow, John; Kidd, Grahame; Ecroyd, Heath; Jones, Russell C

    2014-03-01

    The role of the avian epididymis in post-testicular development and capacitation was examined to assess whether avian spermatozoa undergo any processes similar to those characteristic of mammalian sperm development. We found no evidence of a need for quail sperm to undergo capacitation and 90% of testicular sperm could bind to a perivitelline membrane and acrosome react. However, computer-assisted sperm analysis showed that 20% of testicular sperm from the quail were capable of movement and only about 12% of the motile sperm would have a curvilinear velocity greater than the mean for sperm from the distal epididymis. Nevertheless, epididymal transit was associated with increases in mean sperm velocity and the proportion of motile sperm. Together, these findings explain why earlier workers have achieved some fertilizations following inseminations of testicular spermatozoa and also demonstrate the need for some epididymal maturation of avian spermatozoa. Analysis of the electrophoretic profile of quail epididymal luminal proteins revealed that only one major protein (∼16 kDa) is secreted by the epididymis and it was virtually the only protein secreted by the ipsilateral epididymis following unilateral orchidectomy. Mass spectrometry showed that this protein is hemoglobin; this finding was confirmed using anti-hemoglobin antibodies. It is suggested that hemoglobin may support sperm metabolism in the quail epididymis, aid in motility, and/or serve as an antioxidant.

  5. Morphological Pattern of Testicular Biopsies in Zaria, Nigeria ...

    African Journals Online (AJOL)

    Background: Infertility is an established social problem in Nigeria where women have always been blamed for by the society. This serious issue necessitated this review of morphologic patterns of testicular biopsies. Method: This study was a five-year retrospective histopathological analysis of testicular biopsies sent for ...

  6. Testicular tuberculosis in an HIV positive patient mimicking ...

    African Journals Online (AJOL)

    B.A. Ojo

    Abstract. With the upsurge of tuberculosis infection compounded by the pandemic Human Immune Deficiency Virus. (HIV), isolated testicular tuberculosis though a rarity, should be a differential diagnosis especially in the atypical age group of patients presenting with testicular swelling and in areas with high prevalence rate ...

  7. Testicular dysgenesis syndrome: mechanistic insights and potential new downstream effects

    DEFF Research Database (Denmark)

    Sharpe, R.M.; Skakkebæk, Niels Erik

    2008-01-01

    Reproductive disorders of newborn (cryptorchidism, hypospadias) and young adult males (low sperm counts, testicular germ cell cancer) are common and/or increasing in incidence. It has been hypothesized that these disorders may comprise a testicular dysgenesis syndrome (TDS) with a common origin...

  8. The practice of testicular self examination: a comparative study of ...

    African Journals Online (AJOL)

    Knowledge of testicular cancer and of self examination was found to be low in both groups. Both groups, though, showed high general health awareness and a perception that the benefits of self examination would be great. It is recommended that knowledge of testicular cancer and the value of self examination should ...

  9. Cytogenetics of testicular germ cell tumors of adults

    NARCIS (Netherlands)

    van Echten, J; de Jong, B

    1998-01-01

    In this article, not intended to be a review of the literature, we present our view about the oncogenesis, pathogenesis and tumor progression of testicular germ cell tumors of adults. This view is based on our cytogenetic analyses df primary testicular germ cell tumors (seminomas and non-seminomas),

  10. testicular artery arising from an aberrant right renal artery

    African Journals Online (AJOL)

    User

    2017-08-17

    Aug 17, 2017 ... Correspondence to Dr. Emmanuel Henry Suluba, Department of Anatomy, School of Medicine,. Muhimbili University of Health and ... vein, left colic artery and the descending colon. Both right and left testicular arteries as ... anatomy of the vessels such as testicular arteries, ovarian arteries, renal arteries and.

  11. Undetectable inhibin B serum levels in men after testicular irradiation

    DEFF Research Database (Denmark)

    Petersen, P M; Andersson, A M; Rørth, M

    1999-01-01

    A group of men treated with testicular irradiation for carcinoma in situ in the remaining testis after orchidectomy for unilateral testicular germ cell cancer was used as a model to study of the effect of selective eradication of germ cells on the levels of serum inhibin B in the human male. Thir...

  12. Transverse Testicular Ectopia with Bilateral Pyocoele: Case Report ...

    African Journals Online (AJOL)

    its embryology and management in brief, and review the previously reported cases. Key words: Crossed testicular ectopia, transverse testicular ectopia, tunica vaginalis sac. Department of General Surgery, Vardhman Mahavir Medical. College and Safdarjung Hospital, New Delhi, India with right inguinal hernia with clinical ...

  13. The effect of unilateral vasectomy on testosterone and testicular ...

    African Journals Online (AJOL)

    EB

    Discipline of Clinical Anatomy, Nelson R Mandela School of Medicine, University of KwaZulu-Natal,. Private Bag X54001, Durban, South Africa. ... on testicular histology, testosterone and seminal parameters in the AGR. Methods .... Flickinger et al.24 since there is an association between testicular changes and serum ...

  14. Testicular and related size evaluations in Nigerian Sahel goats with ...

    African Journals Online (AJOL)

    A stratified quota sample population of 125 male goats inclusive of all testicular sizes was taken at a slaughterhouse in Maiduguri, Nigeria. The bucks were aged 18-30 months and weighed 17.04 ± 2.99 (12-25) kg. Body, testicular and epididymal weights of each goat with other related size measurements were estimated.

  15. Testicular Biopsies of Azoospermic Men at The Lagos State ...

    African Journals Online (AJOL)

    ... histological findings from testicular biopsies in azoospermic men seen at the Lagos State University Teaching Hospital, Ikeja - Lagos, Nigeria. Patients and Methods: A retrospective study of testicular biopsies of azoospermic men who presented to our institution from 2005 to 2006 was performed. The patient's age, type of ...

  16. Effect of Pinealectomy and Blindness on Alcohol Induced Testicular ...

    African Journals Online (AJOL)

    Conclusion: Bilateral but not unilateral blindness reduces sperm count, sperm motility and testicular lipid peroxidation following ethanol exposure. Whereas pinealectomy increases testicular lipid peroxidation, and decreases sperm count and motility following ethanol exposure in rats. Keywords: Pineal gland, Pinealectomy, ...

  17. Relationship of testicular development with age, body weight ...

    African Journals Online (AJOL)

    The study was conducted to measure the development of several testicular characteristics and to investigate the relationship between testicular parameters with body growth, semen characteristics and serum testosterone levels in growing ram lambs. Seventeen single born Kivircik ram lambs from three to four year old ewes ...

  18. Reversal of experimental varicocele-induced testicular toxicity by L ...

    African Journals Online (AJOL)

    testicular volumes, caudal epididymal sperm characteristics, testicular histology and serum hormone levels were evaluated. Results showed that the testes of the rats that were given vitamin C post experimental varicocele had better physiological, biochemical and histological profiles than those of the untreated animals.

  19. Ghrelin modulates testicular damage in a cryptorchid mouse model

    Science.gov (United States)

    Boekelheide, Kim; Sigman, Mark; Hall, Susan J.; Hwang, Kathleen

    2017-01-01

    Cryptorchidism or undescended testis (UDT) is a common congenital abnormality associated with increased risk for developing male infertility and testicular cancer. This study elucidated the effects of endogenous ghrelin or growth hormone secretagogue receptor (GHSR) deletion on mouse reproductive performance and evaluated the ability of ghrelin to prevent testicular damage in a surgical cryptorchid mouse model. Reciprocal matings with heterozygous/homozygous ghrelin and GHSR knockout mice were performed. Litter size and germ cell apoptosis were recorded and testicular histological evaluations were performed. Wild type and GHSR knockout adult mice were subjected to creation of unilateral surgical cryptorchidism that is a model of heat-induced germ cell death. All mice were randomly separated into two groups: treatment with ghrelin or with saline. To assess testicular damage, the following endpoints were evaluated: testis weight, seminiferous tubule diameter, percentage of seminiferous tubules with spermatids and with multinucleated giant cells. Our findings indicated that endogenous ghrelin deletion altered male fertility. Moreover, ghrelin treatment ameliorated the testicular weight changes caused by surgically induced cryptorchidism. Testicular histopathology revealed a significant preservation of spermatogenesis and seminiferous tubule diameter in the ghrelin-treated cryptorchid testes of GHSR KO mice, suggesting that this protective effect of ghrelin was mediated by an unknown mechanism. In conclusion, ghrelin therapy could be useful to suppress testicular damage induced by hyperthermia, and future investigations will focus on the underlying mechanisms by which ghrelin mitigates testicular damage. PMID:28542403

  20. Dismal salvage of testicular torsion: A call to action! | Maranya ...

    African Journals Online (AJOL)

    Background: Testicular ischaemia and infarction in cases of torsion depend on the duration and degree of twisting. Early evaluation and treatment are associated with high salvage reports. Objective: To determine the salvage rates of testicular torsion in selected hospitals at the Coast Province of Kenya Design: A ...

  1. Testicular torsion: case report | Kuremu | East African Medical Journal

    African Journals Online (AJOL)

    This is a report of bilateral testicular torsion. The objective of the report is to highlight the serious implications of misdiagnosis of testicular torsion. Other than loss of the testis due to necrosis in unilateral torsion, immunological damage of the opposite testis occurs. Early, accurate diagnosis, and institution of the appropriate ...

  2. Intermittent Testicular Torsion | Obi | Nigerian Journal of Clinical ...

    African Journals Online (AJOL)

    Objective: The aim of this study is to highlight the clinical characteristics of patients with intermittent testicular torsion and draw attention to this underreported condition. Methods: Clinical and demographic data of all patients treated for intermittent testicular torsion from January 2007 to June 2015 were prospectively collected ...

  3. Manual Detorsion of Testicular Torsion - A Primary Care Intervention ...

    African Journals Online (AJOL)

    Testicular torsion is one of the known acute urological emergencies that require prompt intervention. Salvage of the testis is only possible if derotation is performed within 6 hours of onset of symptoms. The objective of this paper is to report successful manual detorsion of the testes of patients with testicular torsion.

  4. An isolated tuberculousorchitis mimicking testicular tumour as a ...

    African Journals Online (AJOL)

    Case Report: A 32-year old man presented with a three-months history of left sided painless progressive testicular swelling. Further clinico-radiological findings revealed traits of a left testicular tumour. He was found to be HIV positive only at the index presentation whilst the histopathology of the left sided orchidectomy ...

  5. Feasibility of sentinel node lymphoscintigraphy in stage I testicular cancer

    NARCIS (Netherlands)

    Tanis, Pieter J.; Horenblas, Simon; Valdés Olmos, Renato A.; Hoefnagel, Cornelis A.; Nieweg, Omgo E.

    2002-01-01

    The aim of this study was to investigate the feasibility of lymphoscintigraphy for sentinel node identification in testicular cancer. Five patients with clinical stage I testicular cancer were prospectively included. A single dose of technetium-99m nanocolloid (mean dose 99 MBq, volume 0.2 ml) was

  6. How to Perform a Testicular Self-Examination

    Science.gov (United States)

    ... autoexploración testicular? (Presentación de diapositivas) Testicular self-exams (TSE) can help you check for things like cancer. ... 35. It's important to try to do a TSE every month so you can become familiar with ...

  7. Histological evidence of testicular dysgenesis in contralateral biopsies from 218 patients with testicular germ cell cancer

    DEFF Research Database (Denmark)

    Hoei-Hansen, Christina E; Holm, Mette; Rajpert-De Meyts, Ewa

    2003-01-01

    patients, areas with immature and morphologically distorted tubules were also noted. Spermatogenesis was qualitatively normal in 51.4%, whereas 11.5% had very poor or absent spermatogenesis. It is concluded that microscopic testicular dysgenesis is a frequent feature in contralateral biopsies from patients...

  8. TESTICULAR BIOMETRIC CHARACTERISTICS IN SANTA INÊS SHEEP SUBMITTED TO PROTEIN SUPPLEMENTATION AND ANTI-HELMINTH TREATMENTS CARACTERÍSTICAS BIOMÉTRICAS TESTICULARES EM CARNEIROS SANTA INÊS SUBMETIDOS A DIFERENTES REGIMES DE SUPLEMENTAÇÃO PROTÉICA E TRATAMENTOS ANTI-HELMÍNTICOS

    Directory of Open Access Journals (Sweden)

    Helder Louvandini

    2008-10-01

    Full Text Available

    Biometric testicular traits were evaluated on 24 entire male Santa Inês lambs, with mean initial weight of 24.5 kg ± 2.88. These were distributed in four treatments (n=6: HPv (animals drenched + high protein concentrate, HPn: (animals not drenched + high protein concentrate, LPv: (animals drenched + low protein concentrate, LPn: (animals not drenched + low protein concentrate for eight and a half months. Before slaughter testicular measurements were taken in situ. Scrotal perimeter (SC was measured using tape as well as length (LENG and width (WID using calipers. Testicular shape and volume (using prolate and cylinder equation were calculated. After slaughter the measurements were taken in vitro. Real testicle volume (VOLR was measured using water displacement. Length (LENGV and width (WIDV were measured with calipers after skin removal. The testicles were symmetrical and calipers were an accurate means of in situ measurement of the testicle size. The form of the testicles affected the volume. The average of the prolate sphere and cylinder equations gave the best estimate for real testicle volume. High protein levels in the diet accompanied by antihelminth treatment led to higher body weight in the sheep, this being the main factor for variation in testicle biometric traits.

    KEY WORDS: Shape, sheep, testicle biometry, volume.

    Para avaliar as características biométricas testiculares de carneiros da raça Santa Inês, 24 cordeiros machos, inteiros, com peso médio inicial de 24,5 kg ± 2,88, aos quatro meses de idade, foram distribuídos em quatro tratamentos: APv (animais vermifugados + concentrado com alta proteína, APn (animais não-vermifugados + concentrado com alta proteína, BPv (animais vermifugados + concentrado com baixa proteína, BPn (animais não vermifugados + concentrado com baixa proteína durante 8

  9. Testicular descent: INSL3, testosterone, genes and the intrauterine milieu

    DEFF Research Database (Denmark)

    Bay, Katrine; Main, Katharina M; Toppari, Jorma

    2011-01-01

    Complete testicular descent is a sign of, and a prerequisite for, normal testicular function in adult life. The process of testis descent is dependent on gubernacular growth and reorganization, which is regulated by the Leydig cell hormones insulin-like peptide 3 (INSL3) and testosterone. Investi......Complete testicular descent is a sign of, and a prerequisite for, normal testicular function in adult life. The process of testis descent is dependent on gubernacular growth and reorganization, which is regulated by the Leydig cell hormones insulin-like peptide 3 (INSL3) and testosterone....... Investigation of the role of INSL3 and its receptor, relaxin-family peptide receptor 2 (RXFP2), has contributed substantially to our understanding of the hormonal control of testicular descent. Cryptorchidism is a common congenital malformation, which is seen in 2-9% of newborn boys, and confers an increased...

  10. Primary testicular mucinous cystadenoma: Case report and literature review.

    Science.gov (United States)

    de Lima, Mário Maciel; de Lima, Mário Maciel; Granja, Fabiana

    2015-01-01

    Testicular mucinous cystadenomas are rare in urological practice, and their histogenesis, course and management are debated. We report a primary testicular mucinous cystadenoma in a 54-year old male who presented with left testicular swelling and pain. He denied having a history of cryptorchidism, testicular trauma, infections, urinary complaints, or febrile illnesses. He did not have diabetes, but was on treatment for hypertension. The patient underwent a left inguinal radical orchiectomy, and histological examination of the resected tumour confirmed a primary testicular mucinous cystadenoma. The patient had an uneventful recovery, and is being followed up. Conclusively, urologists need to maintain a high index of suspicion of these tumours and their differentiation from metastatic tumours to ensure optimal therapeutic outcomes.

  11. Morfometria testicular durante o ciclo reprodutivo de Dendropsophus minutus (Peters (Anura, Hylidae Testicular morphometry during the reproductive cycle of Dendropsophus minutus (Peters (Anura, Hylidae

    Directory of Open Access Journals (Sweden)

    Lia R. de S. Santos

    2007-03-01

    Full Text Available Este estudo descreve o ciclo reprodutivo de machos de Dendropsophus minutus (Peters, 1872 com base na análise da morfometria testicular e a correlação com parâmetros climáticos. Cinqüenta indivíduos foram coletados em São José do Rio Preto, São Paulo. Após as análises macroscópicas, os testículos foram encaminhados à rotina histológica, fixados com Bouin e incluídos em historesina. Cortes de 2 µm foram corados com azul de toluidina 1% e observados ao microscópio. Testículos de D. minutus são órgãos pequenos (comprimento 1,90 ± 0,13 mm, esbranquiçados, com forma oval e encontrados na cavidade abdominal. Estão localizados na extremidade cranial dos rins e apresentam assimetria quanto a sua posição. Estatisticamente não há variação intra-individual no comprimento e no peso dos testículos, bem como na área e diâmetro dos lóculos seminíferos. Quanto à histologia testicular, foi possível identificar ao longo do ano nos lóculos seminíferos, todos os tipos celulares da linhagem espermatogênica, caracterizando uma gametogênese contínua, corroborada por fatores ecológicos e comportamentais. Informações sobre a morfometria testicular e ciclo reprodutivo tem importante valor biológico para anuros de regiões neotropicais.This study describes the male reproductive cycle of Dendropsophus minutus (Peters, 1872 based on testicular morphometric analysis, related to climatic conditions. Fifty individuals where collected in São José do Rio Preto, São Paulo. After macroscopic analysis, the testes were submitted to histological routine, fixed with Bouin, embedded in historesin. Sections of 2 µm were stained with 1% toluidine blue and observed to the microscope. The testes of D. minutus are small organs (length 1.90 ± 0.13 mm, whitish, oviform and found in the abdominal cavity. They are located in the cranial extremity of the kidneys and present asymmetry as far as position. According to statistical analyses, there

  12. Barriers Identified by Swedish School Nurses in Giving Information about Testicular Cancer and Testicular Self-Examination to Adolescent Males

    Science.gov (United States)

    Rudberg, Lennart; Nilsson, Sten; Wikblad, Karin; Carlsson, Marianne

    2005-01-01

    The purpose of this study was to investigate to what extent school nurses in Sweden inform adolescent men about testicular cancer (TC) and testicular self-examination (TSE). A questionnaire was completed by 129 school nurses from 29 randomly selected municipalities. All respondents were women, with a mean age of 42 years. The results showed that…

  13. Evaluation of the Effectiveness of Testicular Cancer and Testicular Self-Examination Training for Patient Care Personnel: Intervention Study

    Science.gov (United States)

    Akar, Serife Zehra; Bebis, Hatice

    2014-01-01

    Testicular cancer (TC) is the most common malignancy among men aged 15-35 years. Testicular self-examination (TSE) is an important tool for preventing late-stage TC diagnoses. This study aimed to assess health beliefs and knowledge related to TC and TSE and the effectiveness of TC and TSE training for patient care staff in a hospital. This was a…

  14. Ensayo cuantitativo para la determinación de la actividad hidrolítica de la enzima biotinidasa

    Directory of Open Access Journals (Sweden)

    Ernesto C. González

    2001-12-01

    Full Text Available El presente trabajo describe la estandarización de un ensayo diseñado para cuantificar la actividad hidrolítica de la enzima biotinidasa en muestras de suero humano, el cual se basa en el método de Wolf y colaboradores, que emplea el N-biotinil-p-aminobenzoico (BPABA como sustrato. Con la adición de detergentes a la solución de nitrito de sodio, se eliminan las burbujas de nitrógeno formadas durante la reacción de diazotación y se mejora la precisión del ensayo. Se observó que la congelación-descongelación de las muestras de suero no afecta la actividad hidrolitica de la enzima biotinidasa. La evaluación de la interferencia de fármacos en el ensayo mostró que con el sulfametoxasol/trimetoprim y la procainal benzilpenicilina hay desarrollo de color en ausencia del sustrato BPABA. Los valores promedio de actividad hidrolitica de la biotinidasa, obtenidos en un grupo de 205 niños sanos, fue de 7,04 + 2,2 nmol/min/ml. No se encontraron diferencias estadísticamente significativas al evaluar la actividad de la enzima por sexo, raza y grupos de edad. Este ensayo se puede emplear en la determinación de la actividad hidrolítica de la enzima biotinidasa en muestras de suero humano y, específicamente, en la confirmación de los casos detectados por los programas de tamizaje neonatal para la deficiencia de biotinidasa.

  15. Radiotherapy Treatment Planning for Testicular Seminoma

    Energy Technology Data Exchange (ETDEWEB)

    Wilder, Richard B., E-mail: richardbwilder@yahoo.com [Department of Radiation Oncology, Moffitt Cancer Center, Tampa, FL (United States); Buyyounouski, Mark K. [Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA (United States); Efstathiou, Jason A. [Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA (United States); Beard, Clair J. [Department of Radiation Oncology, Dana-Farber/Brigham and Women' s Cancer Center, Boston, MA (United States)

    2012-07-15

    Virtually all patients with Stage I testicular seminoma are cured regardless of postorchiectomy management. For patients treated with adjuvant radiotherapy, late toxicity is a major concern. However, toxicity may be limited by radiotherapy techniques that minimize radiation exposure of healthy normal tissues. This article is an evidence-based review that provides radiotherapy treatment planning recommendations for testicular seminoma. The minority of Stage I patients who choose adjuvant treatment over surveillance may be considered for (1) para-aortic irradiation to 20 Gy in 10 fractions, or (2) carboplatin chemotherapy consisting of area under the curve, AUC = 7 Multiplication-Sign 1-2 cycles. Two-dimensional radiotherapy based on bony anatomy is a simple and effective treatment for Stage IIA or IIB testicular seminoma. Centers with expertise in vascular and nodal anatomy may consider use of anteroposterior-posteroanterior fields based on three-dimensional conformal radiotherapy instead. For modified dog-leg fields delivering 20 Gy in 10 fractions, clinical studies support placement of the inferior border at the top of the acetabulum. Clinical and nodal mapping studies support placement of the superior border of all radiotherapy fields at the top of the T12 vertebral body. For Stage IIA and IIB patients, an anteroposterior-posteroanterior boost is then delivered to the adenopathy with a 2-cm margin to the block edge. The boost dose consists of 10 Gy in 5 fractions for Stage IIA and 16 Gy in 8 fractions for Stage IIB. Alternatively, bleomycin, etoposide, and cisplatin chemotherapy for 3 cycles or etoposide and cisplatin chemotherapy for 4 cycles may be delivered to Stage IIA or IIB patients (e.g., if they have a horseshoe kidney, inflammatory bowel disease, or a history of radiotherapy).

  16. Ultrasonographic Findings of Prepubertal Testicular Teratoma

    Energy Technology Data Exchange (ETDEWEB)

    Won, Jang Han; Cho, Jae Ho [Yeungnam University College of Medicine, Daegu (Korea, Republic of)

    2005-06-15

    To evaluate the ultrasonographic findings of testicular teratoma arising in pre-pubertal children. We studied 6 cases in 5 patients with pathologically proven testicular teratoma. Ultrasonography was performed in all cases and MRI in 5 cases. The location, size, shape, margin and internal echo pattern of the lesion were evaluated on ultrasonography and the shape, signal intensity and presence or absence of contrast enhancement were evaluated on MRI. The shape of all cases was round or oval and the lesion size ranged from 0.5 to 3.5 cm (average, 1.7 cm). Four of 6 cases were seen as cystic lesions, Three of which were multilocular and one was unilocular. The cystic lesions were filled with echo-free fluid without any solid component. The inner wall and septa were minutely granulated. One of 6 cases was seen as a predominantly cystic lesion containing heterogeneous, high echoic portions. One case was seen as a heterogeneous mixed echoic lesion with dirty posterior sonic shadowing. Three of the 4 cases seen as a cyst on ultrasonography were also seen as a cyst on MRI. In one case seen as a predominantly cystic lesion on ultrasonography, the periphery of the lesion was hypointense and the center was hyperintense on T2-weighted image. The remaining case seen as a heterogeneous mixed echoic mass was markedly heterogeneous in signal intensity both on T2- and T1-weighted images and hyperintense fat components were noted. Contrast enhancement was not seen in any of the 4 cases. On ultrasonography, pre-pubertal testicular teratoma is commonly seen as a multilocular or unilocular cyst and a minutely granulated appearance is noted in the inner wall or septa of the cystic lesion

  17. Efeito de extratos proteicos de amendoim sobre o desenvolvimento, a capacidade infectiva e atividade de enzimas proteolíticas de Meloidogyne enterolobii

    Directory of Open Access Journals (Sweden)

    Juliana Martins Ribeiro

    2014-06-01

    Full Text Available No Brasil, Meloidogyne enterolobii vem causando perdas significativas na produção de goiabeiras e, no submédio do Vale do São Francisco, por exemplo, o impacto negativo decorrente da infecção e morte de goiabeiras tem refletido diretamente na qualidade de vida dos agricultores. Até o momento, não existem métodos de controle efetivos: os nematicidas avaliados experimentalmente não têm sido eficientes e não há produtos registrados no Ministério da Agricultura, Pecuária e Abastecimento para aplicação em goiabeiras. Assim, há necessidade de realizar pesquisa básica nesta área. A prospecção de proteínas relacionadas com a resistência em espécies resistentes pode ser uma alternativa para o desenvolvimento de medidas para seu controle. Para isso, foram realizados ensaios biológicos de toxicidade para a análise do efeito de extratos proteicos de amendoim sobre o desenvolvimento, a capacidade infectiva e atividade de enzimas proteolíticas de M. enterolobii visando à identificação de proteínas com potencial para controle desse nematoide. Os resultados obtidos indicaram que o extrato proteico total de amostras de raízes de plantas de amendoim inoculadas não tem efeito sobre as três características supracitadas. Sendo assim, são necessários estudos dessa natureza com outras espécies resistentes ao patógeno visando à identificação de proteínas que apresentem potencial para o seu controle.

  18. Effectiveness of lycopene on experimental testicular torsion.

    Science.gov (United States)

    Güzel, Mahmut; Sönmez, Mehmet Fatih; Baştuğ, Osman; Aras, Necip Fazıl; Öztürk, Ayşe Betül; Küçükaydın, Mustafa; Turan, Cüneyt

    2016-07-01

    We aimed to demonstrate the long term effectiveness of lycopene, a precursor of vitamin A, on the testes for ischemia-reperfusion injury. Seventy male Wistar albino rats were used for this experiment. The rats were divided into seven groups. Group 1 served as the control group; group 2 was sham-operated; group 3 received 20mg/kg/day lycopene (intraperitoneally); in group 4, the right testes of rats were kept torted for 2hours and then were detorted and the animals lived for three days; in group 5, the right testes of rats were kept torted for 2hours and then were detorted and the animals lived for ten days; in group 6, the right testes of the rats were kept torted for 2hours and then detorted and the animals received 20mg/kg/day lycopene (intraperitoneally) for three days; in group 7, the right testes of the rats were kept torted for 2hours and then were detorted and the animals received 20mg/kg/day lycopene (intraperitoneally) for ten days. Lycopene was used intraperitoneally. Some of the testes tissues were used for biochemical analyses and the other tissues were used for histological procedures. The Johnsen's score was used for seminiferous tubule deterioration. The TUNEL method was utilized to show apoptosis of testicular tissue. Testosterone levels were measured from blood samples and SOD, MDA, TNF-α, IL-1β and IL-6 measurements were recorded from tissue samples. The results were analyzed statistically. In groups 1, 2 and 3 there was normal testicular structure. Rats in groups 4 and 5 had damaged testicular tissues. In groups 6 and 7, in which we used lycopene, the testes were not better than those in groups 4 and 5. The MSTD and JTBS values were better in group 6, but not in group 7 among the torsion groups. As a result, MDA, SOD, TNF-α and IL-1β were increased and serum testosterone and IL-6 levels were decreased in groups 4 and 5 compared to group 1. There was no improvement in the groups treated with lycopene for therapeutic purposes. It was shown that

  19. Testicular Cancer: Epidemiology, Diagnosis, and Management.

    Science.gov (United States)

    Smith, Zachary L; Werntz, Ryan P; Eggener, Scott E

    2018-03-01

    There were an estimated 8720 new cases of testicular cancer (TC) in the United States in 2016. The cause of the disease is complex, with several environmental and genetic risk factors. Although rare, the incidence has been steadily increasing. Fortunately, substantial advances in treatment have occurred over the last few decades, making TC one of the most curable malignancies. However, because TC typically occurs in younger men, considerations of the treatment impact on fertility, quality of life, and long-term toxicity are paramount; an individualized approach must be taken with patients based on their clinical and pathologic findings. Copyright © 2017 Elsevier Inc. All rights reserved.

  20. Is Sedentary Lifestyle Associated With Testicular Function?

    DEFF Research Database (Denmark)

    Priskorn, Lærke; Jensen, Tina Kold; Bang, Anne Kirstine

    2016-01-01

    , when they attended a compulsory medical examination to determine their fitness for military service. Information on sedentary behavior (television watching and computer time) and physical activity was obtained by questionnaire. The men had a physical examination, delivered a semen sample, and had......Based on cross-sectional data on 1,210 healthy young Danish men, we investigated whether sedentary lifestyle was associated with testicular function (semen quality and reproductive hormones) independent of physical activity. The men were invited to participate in the study between 2008 and 2012...

  1. PRODUCCIÓN DE ENZIMAS EXTRACELLARES POR BACTERIAS AISLADAS DE INVERTEBRADOS MARINOS

    Directory of Open Access Journals (Sweden)

    Jorge León

    2014-06-01

    Full Text Available Con el fin de seleccionar las bacterias marinas con la capacidad de producir enzimas extracelulares ( CEE , se analizaron muestras de Argopecten purpuratus y Crassostrea gigas en el cultivo , así como de otros invertebrados interticlal y bentónicos. La selección de cepas de la CEE de productores se llevó a cabo en Agar Marino ( MA con la adición del sustrato relevante ( almidón , caseína , Tween - 80 , lecitina , ADN y gelatina . La CEE evaluación cepas productoras se llevó a cabo en 102 aislamientos . Los resultados muestran que las bacterias asociadas TOA . purpuratusand C. gigashave las mejores actividades multienzimáticos ; Sin embargo , Semimytilus algosus, Tetrapigus niger y Thais chocolata también son fuentes importantes de productores de bacterias de la CEE. La actividad multienzimático cualitativa en MA ( zonas claras u opacas alrededor de las colonias en mm de diámetro varió de 6 a > 16 mm . La frecuencia de la producción multienzimático fue caseinase 62,74 % , entre esterasa 57,84 % , 52,94 % de la amilasa , la gelatinasa 38,23 % , 33,3 % DNAsa , agarasa 5,43 % y 90,0 % lecitinasa . Los resultados sugieren la posibilidad de usar cepas nativas para fines biotecnológicos

  2. Tratamento da Doença de Pompe - deficiência da alfa-glicosidase ácida

    Directory of Open Access Journals (Sweden)

    Micaela Inês KUHN

    2014-12-01

    Full Text Available Este trabalho tem como objetivos descrever a patogênese e o tratamento da doença de Pompe. Foi realizado um estudo de revisão bibliográfica mediante busca de artigos científicos publicados entre 2004 e 2014. Portadores de deficiência na enzima alfa acido glicosidase, desenvolvem a doença de Pompe, que resulta em um acumulo de glicogênio dentro do lisossomo, originando danos e disfunções orgânicas no tecido muscular, ocasionando dificuldades na respiração, locomoção, fala e audição. A terapia de reposição enzimática é a alternativa de tratamento específica para Pompe, melhorando significativamente a função cardíaca e reduzindo a mortalidade. Contudo, a necessidade de injeção de altas doses da enzima, a perda de 80% da enzima por conta do metabolismo hepático e o alto custo do tratamento dificultam o seu uso. A dose que mostrou melhores resultados foi de 20 mg/kg da enzima a cada duas semanas. Todavia, apesar do alto custo do tratamento, os benefícios de diminuição de sintomas dos pacientes são importantes, como melhora na realização de atividades da vida diária, aumento da força muscular, redução da fadiga e incrementos na função pulmonar. Existem ainda, tratamentos alternativos, mas que ainda estão em fase de estudos. Dentre os tratamentos, aquele que possui um melhor prognóstico é a reposição com a enzima humana recombinante. A terapia de reposição enzimática trouxe sobrevida a diversos pacientes devido à diminuição da hipertrofia cardíaca e melhora nos sintomas motores.

  3. Baldness, acne and testicular germ cell tumors

    Science.gov (United States)

    Trabert, Britton; Sigurdson, Alice J.; Sweeney, Anne M.; Amato, Robert J.; Strom, Sara S.; McGlynn, Katherine A.

    2013-01-01

    Androgen levels during critical periods of testicular development may be involved in the etiology of testicular germ cell tumors (TGCT). We evaluated the roles of adolescent and early adult life correlates of androgen exposure and TGCT in a hospital-based case control study. TGCT cases (n=187) and controls (n=148), matched on age, race and state of residence, participated in the study. Unconditional logistic regression was used to estimate associations between TGCT and male pattern baldness, severe acne, markers of puberty onset and body size. Cases were significantly less likely to report hair loss than controls (OR, 0.6; 95% CI, 0.4, 1.0). Amount of hair loss, increasing age at onset and increasing rate of loss were all inversely associated with TGCT (rate of hair loss: p-trend=0.03; age at onset: p-trend=0.03; amount of hair loss: p-trend=0.01). History of severe acne was inversely associated with TGCT (OR, 0.5; 95% CI, 0.3, 0.9) and height was positively associated with TGCT (p-trend=0.02). Increased endogenous androgen levels during puberty and early adulthood may be associated with decreased risk of TGCT. Additional studies of endogenous hormone levels during puberty and early adult life are warranted, especially studies evaluating the role of androgen synthesis, metabolism and uptake. PMID:21128977

  4. Baldness and testicular cancer: the EPSAM case-control study.

    Science.gov (United States)

    Moirano, G; Zugna, D; Grasso, C; Lista, P; Ciuffreda, L; Segnan, N; Merletti, F; Richiardi, L

    2016-03-01

    The etiology of testicular cancer is largely unexplained. Research has mainly focused on prenatal exposures, especially to sex hormones, while less attention has been paid to exposures that may act also postnatally. As baldness has been previously associated with testicular cancer risk we focused on baldness and body hairiness, which are both associated with androgen activity. We used data of the Postnatal Exposures and Male Health (EPSAM) study, a case-control study on testicular cancer conducted in the Province of Turin, Italy, involving cases diagnosed between 1997 and 2008. Information was collected using mailed questionnaires. Analyses included 255 cases and 459 controls. We calculated ORs and 95% CIs to estimate testicular cancer risk among those who developed baldness and among those with body hairiness. We found an inverse association between testicular cancer and baldness (OR: 0.67, 95% CI: 0.46-0.98) and body hairiness (OR: 0.78, 95% CI: 0.53-1.16), although the latter had wider CIs. The inverse association between baldness and testicular cancer is consistent with the results from previous studies. These results suggest that androgens activity may influence testicular cancer risk. © 2016 American Society of Andrology and European Academy of Andrology.

  5. Epigenetic: a molecular link between testicular cancer and environmental exposures?

    Directory of Open Access Journals (Sweden)

    Aurelie eVega

    2012-11-01

    Full Text Available In the last decades, studies in rodents have highlighted links between in utero and/or neonatal exposures to molecules that alter endocrine functions and the development of genital tract abnormalities, such as cryptorchidism, hypospadias, and impaired spermatogenesis. Most of these molecules, called endocrine disrupters (EDs exert estrogenic and/or antiandrogenic activities. These data led to the hypothesis of the Testicular Dysgenesis Syndrome which postulates that these disorders are one clinical entity and are linked by epidemiological and pathophysiological relations. Futhermore, infertility has been stated as a risk factor for testicular cancer. The incidence of testicular cancer has been increasing over the past decades. Most of testicular germ cell cancers develop through a pre-invasive carcinoma in situ (CIS from fetal germ cells (primordial germ cell or gonocyte. During their development, fetal germ cells undergo epigenetic modifications. Interestingly, several lines of evidence have shown that gene regulation through epigenetic mechanisms (DNA and histone modifications plays an important role in normal development as well as in various diseases, including testicular cancer.Here we will review chromatin modifications which can affect testicular physiology leading to the development of testicular cancer; and highlight potential molecular pathways involved in these alterations in the context of environmental exposures.

  6. Papel do estresse oxidativo na fisiopatologia da fenilcetonúria

    OpenAIRE

    Angela Sitta

    2011-01-01

    A fenilcetonúria é um erro inato do metabolismo de aminoácidos, causada pela deficiência severa ou ausência na atividade da fenilalanina hidroxilase, enzima que catalisa a hidroxilação da fenilalanina em tirosina na presença do cofator tetra-hidrobiopterina. Como consequência, ocorre o acúmulo da fenilalanina e seus metabólitos nos tecidos e nos líquidos biológicos dos pacientes afetados. O tratamento para a fenilcetonúria consiste em uma dieta restrita em fenilalanina e proteínas, suplementa...

  7. Qualidade seminal e morfometria testicular de coelhos (Oryctolagus cuniculus suplementados com geleia real

    Directory of Open Access Journals (Sweden)

    P.K.A. Campos

    2012-12-01

    Full Text Available Objetivou-se avaliar o efeito da geleia real na qualidade seminal e na morfometria testicular de coelhos. Quatorze coelhos adultos da raça Nova Zelândia foram distribuídos em três grupos: com administração diária de 1mL de água, via oral (SG; administração diária de 0,5mg (0,5G de geleia real diluída em 1mL de água, via oral; e administração diária de 1,0mL (1,0G de geleia real diluída em 1mL de água, via oral. O fornecimento de geleia real foi iniciado 30 dias antes das coletas de sêmen, permanecendo durante todo o período de coleta, totalizando 90 dias. Utilizou-se o método da vagina artificial para coleta de sêmen. Foram avaliados os parâmetros físicos e morfológicos do sêmen e os parâmetros de morfometria testicular. Houve diferença no volume seminal do 0,5G (0,54±0,22 em relação ao SG (0,39±0,13 e ao 1,0G (0,30±0,09 (P0,05 para turbilhonamento espermático, concentração espermática, motilidade progressiva e vigor espermático. Os defeitos maiores no grupo 0,5G (8,52±3,26 foram menores do que nos grupos SG (14,09±4,26 e 1,0G (16,1±3,95 (P0,05. Os pesos corporal, testicular, epididimário e o índice gonadossomático não diferiram entre os grupos (P>0,05. A ingestão diária de 0,5mg de geleia real apresentou efeitos positivos na morfologia espermática de coelhos.

  8. PURIFICAÇÃO DA ASCORBATO-OXIDASE POR ELETROELUIÇÃO PARA DETERMINAÇÃO DE VITAMINA C

    Directory of Open Access Journals (Sweden)

    Ligia Renata FIRMINO

    2009-07-01

    Full Text Available

    O método de eletroeluição revelou-se eficiente, rápido e simples para purificar a enzima ascorbato-oxidase de abobrinha (Cucurbita pepo medulosa A atividade específica da enzima, após a eletroeluição, foi da ordem de 1.421 U/mg de proteína, obtendo-se nessa etapa um fator de purificação de 152,8 vezes. O conteúdo de vitamina C de alimentos e medicamento foi determinado com a enzima purificada e comparado com o método titulométrico que utiliza o DFI.

  9. The testis: structure, function and most frequent testicular pathology

    OpenAIRE

    Pardo Gambarte, Laura

    2017-01-01

    El trabajo consta de dos partes claramente diferenciadas. En una primera parte, se ha realizado una revisión bibliográfica de los hallazgos anatómicos testiculares más importantes. Han sido descritas también la histofisiología testicular y la regulación hormonal del aparato reproductor masculino así como las principales funciones testiculares, no solo en el aparato reproductor masculino sino también en el sistema endocrino. En una segunda parte y de una manera más ampliada, se han revisado la...

  10. Burned-Out Testicular Tumor: A Case Report

    Directory of Open Access Journals (Sweden)

    N. Balalaa

    2011-01-01

    Full Text Available Germ cell tumors constitute the majority of all testicular tumors, which are relatively rare overall and are mainly encountered in young adults and teenagers. The term ‘burned-out’ germ cell tumor refers to the presence of a metastatic germ cell tumor with histological regression of the primary testicular lesion. Clinical examination of the testes and scrotal sonography is pivotal in the initial diagnosis of such neoplasms. We present a case of a 31-year-old male with a retroperitoneal mass and no palpable lesion on testicular examination.

  11. Testicular tumors: correlation between radiological findings and pathology results; Neoplasias testiculares: aspectos ultra-sonograficos com correlacao anatomopatologica

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Luis Ronan Marques Ferreira de; Szejnfeld, Denis; Abud, Thiago G.; Szejnfeld, Jacob [Universidade Federal de Sao Paulo (UNIFESP/EPM), SP (Brazil). Dept. de Diagnostico por Imagem]. E-mail: luisronan@gmail.com; Takano, Daniela Mayumi [Universidade Federal de Sao Paulo (UNIFESP/EPM), SP (Brazil). Dept. de Anatomia Patologica; Goldman, Suzan Menasce [Universidade Federal de Sao Paulo (UNIFESP/EPM), SP (Brazil). Setor de Geniturinario

    2005-10-15

    The aim of this study is to review the main imaging findings and the pathological and clinical features seen on patients with testicular tumors in order to define characteristics that may help in the differential diagnosis of the most frequent lesions. We performed a retrospective study of 51 patients with diagnosis of testicular tumors submitted to ultrasound and computed tomography between July 2003 to March 2004 that were referred to the Diagnostic Department of Sao Paulo University, Sao Paulo Hospital, Brazil. We concluded that a basic knowledge of the key imaging findings and pathological and clinical features of testicular tumor sis very helpful for an accurate diagnosis of this condition.(author)

  12. Testis sparing surgery for sequential bilateral testicular tumors.

    Science.gov (United States)

    Canda, Abdullah Erdem; Atmaca, Ali Fuat; Ozdemir, Ahmet Tunc; Akbulut, Ziya; Balbay, M Derya

    2009-06-01

    We present our experience in performing testis sparing surgery (TSS) to treat sequential bilateral testicular tumors. We performed TSS on two patients with bilateral sequential testicular tumors. A 43-year-old patient (Case 1) and a 33-year-old patient (Case 2) had previous inguinal orchiectomy for seminoma. The patients were diagnosed with secondary testicular tumors in the contralateral testes on follow up. They were treated with TSS after frozen section analysis of the peritumoral testicular tissue. Pathologic evaluation of the removed tumors revealed immature teratoma and Leydig cell tumor. Both patients are disease free without local recurrence and do not have erectile dysfunction, and thus do not need androgen replacement therapy after a follow up of 6 months and 44 months, respectively. TSS after frozen section analysis appears to be a safe and feasible procedure that, in carefully selected cases, offers adequate cancer control, preserves sexual function, and provides psychological benefits.

  13. Transverse testicular ectopia, a case report and review of literature

    Directory of Open Access Journals (Sweden)

    Moslemi, Mohammad Kazem

    2011-01-01

    Full Text Available Crossed testicular ectopia (CTE/transverse testicular ectopia (TTE is a rare but well known congenital anomaly, in which both gonads migrate toward the same hemiscrotum. It is usually associated with other abnormalities such as persistent Mullerian duct syndrome, true hermaphroditism, inguinal hernia, hypospadias, pseudohermaphroditism, and scrotal anomalies. About 100 cases of transverse testicular ectopia have been reported in published studies. We report a case of transverse testicular ectopia in an 8-month-old boy who presented with right inguinal hernia and nonpalpable left testis. On exploration, both testes were present in the right inguinal region. Bilateral orchiopexy was performed by crossing the left testis in the extra-peritoneal space and ipsilateral scrotal orchiopexy. The diagnosis could not be made preoperatively in most of reported cases.

  14. Testicular development in Dorper, DOhne Merino and crossbred rams

    African Journals Online (AJOL)

    , Dohne Merino (DM) and crossbred (Meatmaster; MM) rams. Testicular measurements included testis volume (TV), diameter (TD), length (TL) and scrotal circumference (SC). Soth TD and SC were highly repeatable and positively correlated ...

  15. Testicular microlithiasis in two boys with a chromosomal abnormality

    NARCIS (Netherlands)

    Goede, J.; Hack, W.W.M.; Pierik, F.H.

    2012-01-01

    A nine and 13-year-old boy, previously diagnosed with 18q syndrome and an 11q deletion, respectively were diagnosed with testicular microlithiasis (TM). Both cases demonstrate that TM occurs in patients with various chromosomal abnormalities.

  16. Effects of sublethal doses of chlorfluazuron on the testicular ...

    African Journals Online (AJOL)

    Jane

    2011-08-15

    mg at the ... reduced the amounts of testicular, seminal vesicular and aedeagular DNA compared with the controls. Similar reduction was ..... a) and Coopex, against grasshoppers in the field and laboratory. Proc. 12th Cong.

  17. Molecular biology of testicular germ cell tumors.

    Science.gov (United States)

    Gonzalez-Exposito, R; Merino, M; Aguayo, C

    2016-06-01

    Testicular germ cell tumors (TGCTs) are the most common solid tumors in young adult men. They constitute a unique pathology because of their embryonic and germ origin and their special behavior. Genetic predisposition, environmental factors involved in their development and genetic aberrations have been under study in many works throughout the last years trying to explain the susceptibility and the transformation mechanism of TGCTs. Despite the high rate of cure in this type of tumors because its particular sensitivity to cisplatin, there are tumors resistant to chemotherapy for which it is needed to find new therapies. In the present work, it has been carried out a literature review on the most important molecular aspects involved in the onset and development of such tumors, as well as a review of the major developments regarding prognostic factors, new prognostic biomarkers and the possibility of new targeted therapies.

  18. Ontogenesis of testicular function in humans.

    Directory of Open Access Journals (Sweden)

    GaĂŤlle Angenard

    2010-01-01

    Full Text Available The two major functions of the testis, steroidogenesis and gametogenesis, take place during fetal life. These two functions have been extensively studied in rodents and adult humans. However, their onset during fetal life is poorly documented in humans. In the first part of this work we presented both our experimental data and some data of literature concerning the development of the human fetal testis. In the second part of this article, using the organ culture system we previously developed, we have investigated the regulations or perturbations of fetal testis development both in rodent and human models. Our findings provide important insight into the potential role of exposure to environmental pollutants (physical factors, in particular ionizing radiation, cadmium and endocrine disruptors such as phthalates during fetal testicular development and their potential deleterious effects on male fertility in adulthood. Our results highlight the specificity of the human model compared with rodent models.

  19. Produção de B-1, 3-glucanase de Cellulosimicrobium cellulans 191 para lise enzimatica da levedura Kluyveromyces marxianus var. bulgaricus e obtenção de B-galactosidade

    OpenAIRE

    Giselle de Arruda Rodrigues

    2008-01-01

    Resumo: A enzima ß-1,3-glucanase da bactéria Cellulosimicrobium cellulans 191 é capaz de lisar a parede celular de diversas leveduras dentre elas as linhagens de Kluyveromyces sp., produtoras da enzima intracelular ß-galactosidase. Este trabalho visou a produção de ß-1,3-glucanase lítica de Cellulosimicrobium cellulans 191 para obtenção das preparações enzimáticas bruta concentrada e purificada com alta atividade lítica para aplicação na obtenção de protoplastos de leveduras e lise das célula...

  20. Adverse testicular effects of Botox® in mature rats

    Energy Technology Data Exchange (ETDEWEB)

    Breikaa, Randa M. [Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Cairo (Egypt); Mosli, Hisham A. [Department of Urology, Faculty of Medicine, King Abdulaziz University, Jeddah (Saudi Arabia); Nagy, Ayman A. [Department of Pathology, Faculty of Medicine, King Abdulaziz University, Jeddah (Saudi Arabia); Department of Forensic Medicine and Toxicology, Faculty of Medicine, Tanta University, Tanta (Egypt); Abdel-Naim, Ashraf B., E-mail: abnaim.pharma@gmail.com [Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Cairo (Egypt); Department of Pharmacology and Toxicology, Faculty of Pharmacy, King Abdulaziz University, Jeddah (Saudi Arabia)

    2014-03-01

    Botox® injections are taking a consistently increasing place in urology. Intracremasteric injections, particularly, have been applied for cryptorchidism and painful testicular spasms. Studies outlining their safety for this use are, however, scanty. Thus, the present study aimed at evaluating possible testicular toxicity of Botox® injections and their effect on male fertility. Mature rats were given intracremasteric Botox® injections (10, 20 and 40 U/kg) three times in a two-week interval. Changes in body and testes weights were examined and gonadosomatic index compared to control group. Semen quality, sperm parameters, fructose, protein, cholesterol and triglycerides contents were assessed. Effects on normal testicular function were investigated by measuring testosterone levels and changes in enzyme activities (lactate dehydrogenase-X and acid phosphatase). To draw a complete picture, changes in oxidative and inflammatory states were examined, in addition to the extent of connective tissue deposition between seminiferous tubules. In an attempt to have more accurate information about possible spermatotoxic effects of Botox®, flowcytometric analysis and histopathological examination were carried out. Botox®-injected rats showed altered testicular physiology and function. Seminiferous tubules were separated by dense fibers, especially with the highest dose. Flowcytometric analysis showed a decrease in mature sperms and histopathology confirmed the findings. The oxidative state was, however, comparable to control group. This study is the first to show that intracremasteric injections of Botox® induce adverse testicular effects evidenced by inhibited spermatogenesis and initiation of histopathological changes. In conclusion, decreased fertility may be a serious problem Botox® injections could cause. - Highlights: • Botox® injections are the trend nowadays, for both medical and non-medical uses. • They were recently suggested for cryptorchidism and

  1. INFLUÊNCIA DE ENZIMAS DE MACERAÇÃO NA PRODUÇÃO DE PUBA INFLUENCE OF MACERATING ENZYMES IN THE PRODUCTION OF "PUBA"

    Directory of Open Access Journals (Sweden)

    Tobias José Barreto de MENEZES

    1998-10-01

    Full Text Available Pubagem é a fermentação natural de raízes de mandioca para produção da puba, um alimento popular do Nordeste do Brasil. Além da fermentação lática predominante, os microrganismos também causam o amolecimento das raízes, importante para a obtenção de um produto de boa qualidade. O objetivo deste trabalho foi detectar a presença de enzimas de maceração e verificar a influência da adição de preparados comerciais de celulase e pectinase na pubagem. Constatou-se que as atividades de celulases, xilanase e poligalacturonase aumentaram durante a fermentação natural. Ao se adicionar preparados comerciais de celulase e pectinase este aumento foi maior do que o esperado pela fermentação natural. A adição desses preparados enzímicos acelerou a fermentação aumentando a acidez e reduzindo o pH mais rapidamente do que o tratamento-testemunha.Retting is the natural fermentation of cassava for the production of puba, a common food of the Northeast of Brazil. In addition to a predominant lactic acid fermentation, the microoganisms also cause the softening of the roots which is important for obtaining a good quality product. The objective of this work was to detect the presence of macerating enzymes and to verify the influence of the addition of a commercial preparation of cellulase and pectinase on the retting of cassava. It was found that the activities of cellulases, xilanase and poligalacturonase increased during natural fermentation. This increase was higher than that expected by natural fermentation when commercial preparations of cellulase and pectinase were added. The additions of these enzymic preparations speeded up the fermentation process increasing the acidity and reducing the pH more rapidly than in the control samples.

  2. Testicular Metastasis of Prostate Cancer: A Case Report

    Directory of Open Access Journals (Sweden)

    Ayumu Kusaka

    2014-09-01

    Full Text Available The incidence of secondary neoplasms of the testis during autopsies is approximately 2.5%. Although most secondary testicular metastases are due to prostate cancer, only a few patients with prostate cancer have clinically manifested testicular metastasis. We report the case of a prostate cancer patient with testicular metastasis who was diagnosed after the presence of a palpable mass in the right testis. A 56-year-old Japanese male presented to our hospital with an elevated serum prostate-specific antigen (PSA level of 137 ng/ml. He was diagnosed with stage IV (T3N1M1b prostate cancer and received androgen deprivation therapy, followed by various hormonal manipulations. His serum PSA level was undetectable for 1 year. No distant metastases were detected during imaging examinations. He received radiation therapy; however, his serum PSA level increased gradually. Four months later, he presented with right testicular swelling. Computed tomography revealed a heterogenous mass in the right testis and a right high inguinal orchiectomy was performed. Histopathological analysis showed that the right testis was infiltrated with metastatic adenocarcinoma with a Gleason score of 8. This is a rare case of right testicular metastasis in a patient with prostate cancer. Testicular metastasis of prostate cancer can be aggressive and metastasize.

  3. Reassembly of somatic cells and testicular organogenesis in vitro.

    Science.gov (United States)

    Reuter, Karin; Ehmcke, Jens; Stukenborg, Jan-Bernd; Simoni, Manuela; Damm, Oliver S; Redmann, Klaus; Schlatt, Stefan; Wistuba, Joachim

    2014-02-01

    Testicular organogenesis in vitro requires an environment allowing a reassembly of testicular cell types. Previous in vitro studies using male murine germ cells cultured in a defined three-dimensional environment demonstrated tubulogenesis and differentiation into spermatozoa. Combining scaffolds as artificial culture substrates with testicular cell culture, we analysed the colonization of collagen sponges by rat testicular cells focusing on cell survival and reassembly of tubule-like-structures in vitro. Isolated testicular cells obtained from juvenile Sprague Dawley and eGFP transgenic rats were cultured on collagen sponges (DMEM high glucose+Glutamax, 35°C, 5% CO2 with or without gonadotropins). Live cell imaging revealed the colonization of cells across the entire scaffold for up to 35 days. After two days, histology showed cell clusters attached to the collagen fibres and displaying signs of tubulogenesis. Clusters consisted mainly of Sertoli and peritubular cells which surrounded some undifferentiated spermatogonia. Flow cytometry confirmed lack of differentiation as no haploid cells were detected. Leydig cell activity was detected by a rise of testosterone after gonadotropin stimulation. Our approach provides a novel method which is in particular suitable to follow the somatic testicular cells in vitro an issue of growing importance for the analysis of germ line independent failure of spermatogenesis. Copyright © 2013 Elsevier Ltd. All rights reserved.

  4. Cricotirotomía en paciente con angioedema de lengua secundario a inhibidor del enzima convertidor de la angiotensina

    OpenAIRE

    Acle Cervera, Leticia; Morales Angulo, Carmelo; García Zornoza, Roberto; Rubio Suárez, Antonio

    2013-01-01

    [ES] El angioedema hereditario por Inhibidores de la enzima convertidora de angiotensina (IECA) es un trastorno muy infrecuente. Suele afectar a la mucosa de la vía aérea supeior y producir cuadros obstructivos de rápida evolución con necesidad de tratamiento urgente. Se presenta el caso de un paciente en tratamiento con IECA y se revisa la prevalencia, fisiopatología y manejo de los angioedemas por tratamiento con IECA, así como los últimos tratamientos. [EN] Hereditary...

  5. Perspectiva en el desarrollo de las enzimas industriales a partir de la inteligencia tecnológica

    OpenAIRE

    Castellanos Domínguez, Óscar Fernando; Ramírez Martínez, Diana Cristina; Montañez, Víctor Mauricio

    2010-01-01

    El desarrollo de tecnologías emergentes implica el reto permanente de utilizar nuevas herramientas de gestión tecnológica. La ingeniería de enzimas y su respectiva tecnología, en el contexto de la biotecnología, es una de las áreas del conocimiento sobre las cuales reiterativamente se plantean grandes expectativas como posible generador de ventaja competitiva en economías emergentes como la colombiana. Sin embargo, varias décadas de investigación en este campo aún no arrojan resultados ...

  6. Producción de enzimas ligninolíticas a partir de biomasa de Panicum maximum por Pleurotus ostreatus

    OpenAIRE

    Morales Fonseca, Diana Milena

    2015-01-01

    El uso de la biomasa como principal materia prima para el desarrollo de productos con alto impacto en la mercado, tales como enzimas lacasas y peroxidasas con aplicaciones en biorremediación , la industria del papel, textil, alimentos y farmacéutica; presenta un creciente interés. El objetivo de esta investigación fue estudiar la obtención de un extracto enzimático ligninolítico a partir de biomasa lignocelulósica de Panicum maximum por Pleurotus ostreatus mediante una fermentación líquid...

  7. Estudio de la expresión de enzimas del metabolismo de aminoácidos en Lactococcus lactis

    OpenAIRE

    García-Cayuela, Tomás

    2011-01-01

    Los aminoácidos son fundamentales para la supervivencia y el desarrollo de bacterias. Son las principales fuentes de nitrógeno y están implicados en la producción de energía, el control del pH intracelular y la regeneración de cofactores. Además, son los precursores de una larga variedad de compuestos volátiles en Lactococcus lactis y, por ello, diversas enzimas son consideradas clave para su formación, como aminotransferasas, deshidrogenasas, liasas y decarboxilasas, entre otras. Estas enzim...

  8. Actividad antiinflamatoria de la enzima superóxido dismutasa (SOD), purificada de la especie Allium sativum (ajo)

    OpenAIRE

    Soberón, Mercedes; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM; Suárez, Silvia; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM; Arnao, Inés; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM; Guija, Emilio; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM; Troncoso, Luzmila; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM; Rojas, Luis; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM; Saldaña, Ítalo; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM; Cordero, Adriana; Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM

    2013-01-01

    Objetivos: Demostrar la actividad antiinflamatoria de la enzima superóxido dismutasa (SOD) purificada de Allium sativum (ajo). Diseño: Experimental. Institución: Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, UNMSM Material biológico: Ratas y Allium sativum. Principales medidas de resultados: Muestra de ajo triturada con tampón fosfato 50 mM pH 7,4, incubada 40 minutos y filtrada; fue sometida a extracción con cloroformo:etanol 1:1 (v/v). Se descartó la fase acuosa. ...

  9. Actividad de enzimas del estrés oxidativo en plantas de tomate cv. Amalia en respuesta al plomo

    OpenAIRE

    Machín Suárez, Alianna; Sánchez-Chávez, Esteban; Héctor Ardisana, Eduardo F; Santos-Cervantes, María E; Pérez Álvarez, Sandra

    2017-01-01

    RESUMEN La contaminación de los suelos por metales pesados es un resultado de la actividad humana, agricultura e industria. Entre los metales pesados el plomo es un contaminante potencial que en las plantas ocasiona numerosos síntomas de toxicidad como por ejemplo, crecimiento atrofiado, ennegrecimiento del sistema radical y clorosis generalizada. La actividad de las enzimas superóxido dismutasa (SOD; EC 1.15.1.1) y glutatión reductasa (GR; EC 1.8.1.7) se determinaron en hojas y tallos de pla...

  10. Expresión de enzimas relacionadas con el metabolismo de glucocorticoides en tejidos ováricos bovino

    OpenAIRE

    Michael López C.; Ayelen Amweg; Matías Stangaferro; Hugo Ortega

    2015-01-01

    Objetivo. Identificar la expresión de enzimas relacionadas con el metabolismo de glucocorticoides en tejidos ováricos bovinos. Materiales y métodos. Se obtuvieron muestras de tejidos provenientes de ovarios sanos (n=10) y con Enfermedad Quística Ovárica (COD) (n=10), a las cuales luego de su procesamiento histológico, se las incluyó en parafina. Mediante la técnica de inmunohistoquímica indirecta, se identificaron in situ en folículos primarios, secundarios, terciarios, atrésicos y quis...

  11. Inmovilización de enzimas en ésteres cinámicos de carbohidratos : nuevos soportes fotoentrecruzables

    OpenAIRE

    Rojas Melgarejo, Francisco

    2002-01-01

    La inmovilización de enzimas es de gran interés por razones económicas,prácticas e incluso ética. Se han sintetizado derivados totalmente cinamoilados de distintos polialcoholes, monosacáridos, derivados de estos últimos con grupos reactivos previamente seleccionados, derivados de oligosacáridos,polisacáridos, así como derivados preparados con diferentes grado de cinamoilación dependiendo del ensayo a realizar. Estos soprotes, sólos o mezclados entre ellos, se irradiaron con luz ultravioleta ...

  12. Aetiology of testicular cancer: association with congenital abnormalities, age at puberty, infertility, and exercise. United Kingdom Testicular Cancer Study Group.

    OpenAIRE

    1994-01-01

    OBJECTIVE--To determine the risk of testicular cancer associated with undescended testis, inguinal hernia, age at puberty, marital status, infertility, vasectomy, and amount of exercise. DESIGN--A population based case-control study with a questionnaire administered by an interviewer and with relevant supplementary data extracted from general practitioners' notes. SETTING--Nine health regions within England and Wales. SUBJECTS--794 men, aged 15-49 years, with a testicular germ cell tumour dia...

  13. Desenvolvimento corporal e testicular em machos de codornas de corte e de postura de 25 a 360 dias

    Directory of Open Access Journals (Sweden)

    Tatiana C. Santos

    2012-11-01

    Full Text Available Codornas do tipo carne e tipo ovos foram analisadas para determinar o desenvolvimento reprodutivo, a puberdade e o início da senilidade. Para tal, 288 codornas (144 codornas de corte e 144 de postura foram acompanhadas desde a eclosão até os 360 dias de idade. As aves foram distribuídas por idade em 18 grupos, sendo 8 codornas/grupo/tipo de codorna. Após 35 dias as codornas foram mantidas em condições de fotoperíodo de dias longos (17luz: 7escuro. O peso vivo e os valores morfométricos e histológicos testiculares foram determinados em cada período. Os dados obtidos foram analisados para determinar a curva de crescimento e o comportamento dos parâmetros analisados. O modelo que mais se adequou aos dados foi o modelo não linear de Gompertz (Y=A exp [-B e (-kt]. O peso vivo e as características testiculares macro e microscópicas apresentaram comportamento alométrico entre si, sendo que, aproximadamente aos 60 dias os machos apresentaram-se sexualmente desenvolvidos, e estabilizaram o peso corporal por volta dos 100 dias. O testículo direito é mais cranial que o esquerdo e diferem em relação a comprimento e largura, porém não foi observada diferenças (P>0,05 para peso testicular. As codornas de corte apresentaram peso corporal e peso testicular maiores que as codornas de postura, porém as codornas de postura apresentaram peso relativo testicular maior. Durante todo o período analisado os machos puderam ser considerados sexualmente aptos. Os reprodutores apresentaram características sexuais ativas até os 360 dias de idade, representadas pelo tamanho testicular e pela atividade celular nos túbulos seminíferos.

  14. Atraso mental: denominador comum dos défices do metabolismo da creatina

    OpenAIRE

    Valongo, Carla

    2013-01-01

    O atraso mental (AM) afeta cerca de 3% da população dos países ocidentais. Na grande maioria dos casos as causas genéticas inerentes ao AM ainda não se encontram esclarecidas. Os doentes com défice do metabolismo da creatina têm como denominador comum o AM/atraso de desenvolvimento bem como atraso de linguagem, epilepsia e autismo. Estes défices englobam um grupo de doenças tratáveis: défices da biossíntese da creatina (envolve as enzimas arginina:glicina amidinotransferase e guanidinoacet...

  15. Produção de proteases por Bacillus sp SMIA-2 crescido em soro de leite e água de maceração de milho e compatibilidade das enzimas com detergentes comerciais Production of proteases by Bacillus sp. SMIA-2 grow on whey and corn steep liquor and compatibility of the enzyme with commercial detergents

    Directory of Open Access Journals (Sweden)

    Wellingta Cristina Almeida do Nascimento

    2006-09-01

    Full Text Available A produção de proteases por Bacillus sp. SMIA-2 cultivado em um meio de cultura contendo soro de leite e água de maceração de milho foi estudada. Além disso, a compatibilidade da enzima com detergentes comerciais foi também avaliada. A atividade máxima da enzima (70 U/mg proteína foi observada na fase estacionária de crescimento, com 32 h de incubação. Estudos sobre a caracterização da protease revelaram que a temperatura ótima para atividade desta enzima foi 70 °C e que a mesma manteve 91% de sua atividade quando incubada a 70 °C na presença do cálcio. O valor ótimo de pH encontrado para a protease foi 8,0, sendo que a enzima manteve 85% e 46% de sua atividade quando incubada por 1 h em pH 9 e pH 10 respectivamente. A protease manteve 64% e 50% de sua atividade quando incubada a 70 °C por 30 min com os detergentes Cheer® e Tide® respectivamente. A utilização da glicina juntamente com íons cálcio resultou em um aumento da estabilidade enzimática em todos os detergentes testados. Em presença dos detergentes Ultra bizz®, Cheer® e Tide®, a enzima manteve aproximadamente 100% de atividade, após 30 min de incubação a 70 °C.The production of protease by the thermophilic Bacillus sp. SMIA-2 cultivated in a medium containing whey and corn steep liquor was studied. In addition, the compatibility of the enzyme with commercial detergents was evaluated. The maximum activity of the enzyme (70 U/mg protein was observed in the phase stationary of growth, with 32 h of incubation. Studies on the protease characterization revealed that the optimum temperature of this enzyme was 70 °C and that it maintained 91% of its activity when incubated a 70 °C in the presence of calcium. The optimum pH of the enzyme was found to be 8.0 and the enzyme maintained 85% and 46% of its original activity when incubated for 1 h at pH 9 and pH 10 respectively. Protease retained 64% and 50% of its activity after 30 min incubation at 70 °C in

  16. Disponibilidade de fósforo estimada por três métodos químicos e pela atividade de duas enzimas em solos que receberam incorporação de materiais orgânicos

    Directory of Open Access Journals (Sweden)

    R. S. Berton

    1997-12-01

    Full Text Available A disponibilidade de fósforo em amostras dos solos Aquatibia (solo aluvial e Hoda (podzólico vermelho-amarelo eutrófico, incubados com quantidades crescentes de materiais orgânicos (palha de cevada, parte aérea de feijão-caupi, esterco de curral e lodo de esgoto, foi estimada por três métodos químicos e pela atividade das enzimas fosfatase ácida e fosfodiesterase, no Departamento de Ciências do Solo e Ambientais da Universidade da Califórnia/Riverside, de janeiro a novembro de 1985. Em estudo em casa de vegetação, a produção de matéria seca e a quantidade de P absorvida pela parte aérea de plantas de milho cultivadas nos solos que receberam os mesmos materiais orgânicos foram determinadas. A disponibilidade de P medida pela extração com água correlacionou-se, significativamente, apenas quando o esterco de curral e o lodo de esgoto foram adicionados aos solos Aquatibia e Hoda, respectivamente. A resina de troca aniônica e o Mehlich 1 foram os métodos mais indicados para determinar a disponibilidade de P para o milho quando os solos receberam quantidades crescentes dos materiais orgânicos. As altas quantidades de P extraídas pela resina de troca aniônica do solo com alta capacidade de adsorção de P indicaram que esse método foi o que melhor considerou os fatores intensidade e capacidade do solo. A atividade da enzima fosfodiesterase do solo revelou ser um bom índice para a determinação do P disponível para o milho, quando os solos receberam a adição do feijão-caupi e do esterco de curral.

  17. BACTERIOCINAS E ENZIMAS PRODUZIDAS POR Bacillus spp. PARA CONSERVAÇÃO E PROCESSAMENTO DE ALIMENTOS*

    Directory of Open Access Journals (Sweden)

    D. SCHULZ

    2009-03-01

    Full Text Available

    Alguns microrganismos possuem a capacidade de produzir substâncias que podem influenciar no desenvolvimento de outros microrganismos. Desde os anos 50 é relatada a capacidade de várias espécies de bactérias do gênero Bacillus de produzir substâncias com atividade antimicrobiana como peptídeos, também denominados de bacteriocinas e enzimas como a subtilisina, subtilina, as proteases e as termolisinas. Muitos desses peptídeos e enzimas têm sido caracterizados bioquimicamente e geneticamente. Embora sejam conhecidas, a função estrutural, a biossíntese e modo de ação de alguns peptídeos antimicrobianos e enzimas, muitos aspectos desses compostos ainda permanecem desconhecidos. Esse artigo descreve uma revisão sobre as principais bacteriocinas e enzimas produzidas por Bacillus spp., bem como suas aplicações em alimentos. Alguns dados de segurança de bacteriocinas e enzimas produzidas por Bacillus spp. também são relatados. PALAVRAS-CHAVE: Bacteriocinas; enzimas; Bacillus spp.; alimentos.

  18. Prospectively Identified Incident Testicular Cancer Risk in a Familial Testicular Cancer Cohort.

    Science.gov (United States)

    Pathak, Anand; Adams, Charleen D; Loud, Jennifer T; Nichols, Kathryn; Stewart, Douglas R; Greene, Mark H

    2015-10-01

    Human testicular germ cell tumors (TGCT) have a strong genetic component and a high familial relative risk. However, linkage analyses have not identified a rare, highly penetrant familial TGCT (FTGCT) susceptibility locus. Currently, multiple low-penetrance genes are hypothesized to underlie the familial multiple-case phenotype. The observation that two is the most common number of affected individuals per family presents an impediment to FTGCT gene discovery. Clinically, the prospective TGCT risk in the multiple-case family context is unknown. We performed a prospective analysis of TGCT incidence in a cohort of multiple-affected-person families and sporadic-bilateral-case families; 1,260 men from 140 families (10,207 person-years of follow-up) met our inclusion criteria. Age-, gender-, and calendar time-specific standardized incidence ratios (SIR) for TGCT relative to the general population were calculated using SEER*Stat. Eight incident TGCTs occurred during prospective FTGCT cohort follow-up (versus 0.67 expected; SIR = 11.9; 95% CI, 5.1-23.4; excess absolute risk = 7.2/10,000). We demonstrate that the incidence rate of TGCT is greater among bloodline male relatives from multiple-case testicular cancer families than that expected in the general population, a pattern characteristic of adult-onset Mendelian cancer susceptibility disorders. Two of these incident TGCTs occurred in relatives of sporadic-bilateral cases (0.15 expected; SIR = 13.4; 95% CI, 1.6-48.6). Our data are the first to indicate that despite relatively low numbers of affected individuals per family, members of both multiple-affected-person FTGCT families and sporadic-bilateral TGCT families comprise high-risk groups for incident testicular cancer. Men at high TGCT risk might benefit from tailored risk stratification and surveillance strategies. ©2015 American Association for Cancer Research.

  19. Cryopreservation of testicular tissue or testicular cell suspensions: a pivotal step in fertility preservation.

    Science.gov (United States)

    Onofre, J; Baert, Y; Faes, K; Goossens, E

    2016-11-01

    Germ cell depletion caused by chemical or physical toxicity, disease or genetic predisposition can occur at any age. Although semen cryopreservation is the first reflex for preserving male fertility, this cannot help out prepubertal boys. Yet, these boys do have spermatogonial stem cells (SSCs) that able to produce sperm at the start of puberty, which allows them to safeguard their fertility through testicular tissue (TT) cryopreservation. SSC transplantation (SSCT), TT grafting and recent advances in in vitro spermatogenesis have opened new possibilities to restore fertility in humans. However, these techniques are still at a research stage and their efficiency depends on the amount of SSCs available for fertility restoration. Therefore, maintaining the number of SSCs is a critical step in human fertility preservation. Standardizing a successful cryopreservation method for TT and testicular cell suspensions (TCSs) is most important before any clinical application of fertility restoration could be successful. This review gives an overview of existing cryopreservation protocols used in different animal models and humans. Cell recovery, cell viability, tissue integrity and functional assays are taken into account. Additionally, biosafety and current perspectives in male fertility preservation are discussed. An extensive PubMED and MEDline database search was conducted. Relevant studies linked to the topic were identified by the search terms: cryopreservation, male fertility preservation, (immature)testicular tissue, testicular cell suspension, spermatogonial stem cell, gonadotoxicity, radiotherapy and chemotherapy. The feasibility of fertility restoration techniques using frozen-thawed TT and TCS has been proven in animal models. Efficient protocols for cryopreserving human TT exist and are currently applied in the clinic. For TCSs, the highest post-thaw viability reported after vitrification is 55.6 ± 23.8%. Yet, functional proof of fertility restoration in the

  20. Utilización de enzimas fibrolíticas en cabras lecheras. Evaluación de su actividad y características fermentativas in vitro

    OpenAIRE

    González García, Eliel

    2004-01-01

    En una serie de experiencias in vivo e in vitro, se evaluaron los efectos de la suplementación con enzimas fibrolíticas a la ración de cabras lecheras. En la experiencia de lactación (Exp.1) se estudió, mediante un diseño 'crossover' con 24 cabras Murciano-Granadinas a mediados de lactación y distribuidas en dos tratamientos (Control: sin suplementación, CON, n = 12; y Promote : suplementadas con enzimas fibrolíticas a 0.47 mL/kg de MS en el concentrado, PRO, n = 12), el comportamiento de los...

  1. Uso de enzimas y oxidantes en productos de panificación fortificados : Estudio de las propiedades físico-químicas y funcionales

    OpenAIRE

    Roccia Ruffinengo, Paola

    2011-01-01

    Objetivo general: Estudiar el efecto del agregado de enzimas y agentes oxidantes sobre la calidad del pan elaborado con mezclas de harinas de trigo y de soja, mediante el análisis de las interacciones físico-químicas que se establecen entre los componentes de las harinas. Objetivos específicos: • Analizar la influencia de las proteínas de soja sobre las propiedades físico-químicas, reológicas y estructurales del gluten. • Estudiar el efecto de las enzimas y los a...

  2. Atividade da pectina metilesterase e da β-galactosidase durante o amadurecimento do mamão cv. golden

    Directory of Open Access Journals (Sweden)

    Luciana Konda de Azevedo Pinto

    2011-09-01

    Full Text Available Este trabalho foi realizado com o objetivo de investigar o comportamento das enzimas pectina metilesterase (PME e β-galactosidase (β-Gal durante o amadurecimento do mamão cv.'Golden'. Mamões com 15% de cor amarela foram estocados em câmara de refrigeração a 20ºC e 85-95 % UR, por um período de 11 dias. Durante este período de estocagem, foi determinada a cor da casca, firmeza e pH da polpa dos frutos, bem como a atividade das enzimas PME e β-Gal. A atividade da PME, observada ao longo do amadurecimento do mamão, indicou que esta enzima participou do processo de hidrólise da parede celular, principalmente no início do amadurecimento dos frutos. Já a atividade da β-Gal aumentou, de maneira não gradual, do primeiro dia até o final do armazenamento, quando alcançou seu valor máximo. Uma redução drástica na firmeza e no pH da polpa ocorreu nos três primeiros dias de armazenamento. Neste período, os frutos apresentaram coloração com valores do ângulo hue próximos de 80, a qual corresponde a uma coloração amarela. Verificou-se que a PME atua de modo efetivo no amadurecimento do mamão, mas a redução precoce em sua atividade indica que a β-Gal tem também um papel fundamental na rápida perda de firmeza pelo mamão cv. Golden.

  3. Testicular microlithiasis in boys and young men with congenital or acquired undescended (ascending) testis

    NARCIS (Netherlands)

    Goede, J.; Hack, W.W.M.; Voort-Doedens, L.M. van der; Pierik, F.H.; Looijenga, L.H.J.; Sijstermans, K.

    2010-01-01

    Purpose: We assessed the prevalence of testicular microlithiasis by ultrasound in boys and young men with congenital or acquired undescended (ascending) testis. Materials and Methods: During followup for testicular growth patients with congenital or acquired undescended (ascending) testis were also

  4. Eliminating acute lymphoblastic leukemia cells from human testicular cell cultures: a pilot study

    NARCIS (Netherlands)

    Sadri-Ardekani, Hooman; Homburg, Christa H.; van Capel, Toni M. M.; van den Berg, Henk; van der Veen, Fulco; van der Schoot, C. Ellen; van Pelt, Ans M. M.; Repping, Sjoerd

    2014-01-01

    To study whether acute lymphoblastic leukemia (ALL) cells survive in a human testicular cell culture system. Experimental laboratory study. Reproductive biology laboratory, academic medical center. Acute lymphoblastic leukemia cells from three patients and testicular cells from three other patients.

  5. Discovery – Cisplatin and The Treatment of Testicular and Other Cancers

    Science.gov (United States)

    Prior to the discovery of cisplatin in 1965, men with testicular cancer had few medical options. Now, thanks to NCI research, cisplatin and similar chemotherapy drugs are known for curing testicular and other forms of cancer.

  6. Validity of predictions of residual retroperitoneal mass histology in nonseminomatous testicular cancer

    NARCIS (Netherlands)

    Steyerberg, EW; Gerl, A; Fossa, SD; Sleijfer, DT; de Wit, R; Kirkels, WJ; Schmeller, N; Clemm, C; Habbema, JDF; Keizer, HJ

    Purpose: To validate predictions of the histology (necrosis, mature teratoma, or cancer) of residual retroperitoneal masses in patients treated with chemotherapy for metastatic nonseminomatous testicular germ cell tumor. Patients and Methods: We studied 172 testicular cancer patients who underwent

  7. Differentiation of Colletotrichum gloeosporioides isolates by using total proteins and esterase electrophoretic patterns and extracellular enzymes production Diferenciação de isolados de Colletotrichum gloeosporioides por meio de padrões eletroforéticos de proteínas totais e isoesterase, e produção de enzimas extracelulares

    Directory of Open Access Journals (Sweden)

    Tereza Cristina de Assis

    2010-06-01

    Full Text Available Isolates of Colletotrichum gloeosporioides (ISO-1, ISO-2, ISO-3, ISO-4, ISO-5 and ISO-6, the causal agent of anthracnose disease on mango fruits, were characterized by electrophoretic patterns of total proteins and esterase in polyacrylamida gel, and also, by production of extracellular enzymes on specific solid substrate. The electrophoretic analysis showed variation in number, intensity of coloration and position of the bands in the gel at each studied system tested. In contrast to the monomorphic behavior to total proteins, high esterase polymorfism was observed indicating difference among isolates. All isolates showed the activity of extracellular enzymes such as amylase, lipase, and protease with some variation among them. The proteolitic activity seemed to be more accentuated than the two other enzymes studied.Isolados de Colletotrichum gloeosporioides (ISO-1, ISO-2, ISO-3, ISO-4, ISO-5 e ISO-6, agente causal da antracnose em frutos de mangueira, foram caracterizados por meio de padrões eletroforéticos de proteínas totais e esterase, em gel de poliacrilamida e produção de enzimas extracelulares, em substratos sólidos específicos. A análise eletroforética mostrou variação no número, intensidade de coloração e posição das bandas no gel, dentro dos dois sistemas estudados. Verificou-se polimorfismo em relação a esterase, mostrando maior diferença entre os isolados, enquanto que nas proteínas totais, observou-se comportamento aparentemente uniforme. Quanto à produção de enzimas extracelulares: amilase, lípase e protease, todos os isolados, embora variando em comportamento, apresentaram atividade para essas enzimas, sendo aparentemente mais acentuada à atividade proteolítica.

  8. Cryopreservation of testicular tissue before long-term testicular cell culture does not alter in vitro cell dynamics.

    Science.gov (United States)

    Baert, Yoni; Braye, Aude; Struijk, Robin B; van Pelt, Ans M M; Goossens, Ellen

    2015-11-01

    To assess whether testicular cell dynamics are altered during long-term culture after testicular tissue cryopreservation. Experimental basic science study. Reproductive biology laboratory. Testicular tissue with normal spermatogenesis was obtained from six donors. None. Detection and comparison of testicular cells from fresh and frozen tissues during long-term culture. Human testicular cells derived from fresh (n = 3) and cryopreserved (n = 3) tissues were cultured for 2 months and analyzed with quantitative reverse-transcription polymerase chain reaction and immunofluorescence. Spermatogonia including spermatogonial stem cells (SSCs) were reliably detected by combining VASA, a germ cell marker, with UCHL1, a marker expressed by spermatogonia. The established markers STAR, ACTA2, and SOX9 were used to analyze the presence of Leydig cells, peritubular myoid cells, and Sertoli cells, respectively. No obvious differences were found between the cultures initiated from fresh or cryopreserved tissues. Single or small groups of SSCs (VASA(+)/UCHL1(+)) were detected in considerable amounts up to 1 month of culture, but infrequently after 2 months. SSCs were found attached to the feeder monolayer, which expressed markers for Sertoli cells, Leydig cells, and peritubular myoid cells. In addition, VASA(-)/UCHL1(+) cells, most likely originating from the interstitium, also contributed to this monolayer. Apart from Sertoli cells, all somatic cell types could be detected throughout the culture period. Testicular tissue can be cryopreserved before long-term culture without modifying its outcome, which encourages implementation of testicular tissue banking for fertility preservation. However, because of the limited numbers of SSCs available after 2 months, further exploration and optimization of the culture system is needed. Copyright © 2015 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved.

  9. Exploring men's preferred strategies for learning about testicular disorders inclusive of testicular cancer: A qualitative descriptive study.

    Science.gov (United States)

    Saab, Mohamad M; Landers, Margaret; Hegarty, Josephine

    2017-02-01

    Men's awareness of testicular disorders is lacking and their intention to seek help for testicular symptoms is sub-optimal. Studies conducted to explore and raise men's awareness of testicular disorders did not address their preferred learning strategies and failed to include men who are at risk for health inequities. The aim of this study was to explore, in-depth, the preferred strategies for learning about testicular disorders inclusive of testicular cancer among men who self-identify as heterosexual, gay, or bisexual. Maximum variation and snowball sampling were used to recruit 29 men aged 18-47 years. Participation was sought from community and youth organizations and a university in the Republic of Ireland. Semi-structured individual interviews and focus groups were conducted. Interviews were audio-recorded and transcribed verbatim. Inductive analysis of manifest content was used. Seventeen informants self-identified as heterosexual, 11 as gay, and one as bisexual. Four main categories emerged, namely: strategies to enhance awareness (television, internet, campaigns, print media), educational dos and don'ts (tailoring effective messages, drawbacks of national initiatives, ineffective learning strategies), implications of raising awareness (risks and benefits of increasing awareness), and learning among gay and bisexual men (learning needs and strategies). Future studies promoting awareness of testicular disorders should take into account men's preferred learning strategies. National campaigns should be delivered frequently and altered occasionally in order to achieve a top-up effect. Clinicians are encouraged to educate young men about the seriousness of testicular symptoms and the importance of seeking timely medical attention for any abnormalities. Copyright © 2016 Elsevier Ltd. All rights reserved.

  10. Hypogonadism and fertility issues following primary treatment for testicular cancer.

    Science.gov (United States)

    Oldenburg, Jan

    2015-09-01

    The majority of testicular cancer (TC) patients are cured and expected to live for decades after treatment, such that knowledge about hypogonadism and fertility issues is particularly important for the group of testicular cancer survivors (TCSs). Hypogonadism and fertility issues are related to treatment intensity. In order to give an overview about hypogonadism in testicular cancer survivors (TCSs) the literature was reviewed. Testicular dysfunction was defined as inadequate spermatogenesis, as reflected by increased levels of Follicle Stimulating Hormone (FSH) and reduced fertility and/with or without insufficient testosterone (T) production with or without compensatory increased Luteinizing Hormone (LH) levels. Hypogonadism may lead to reduced sexual functioning and well-being, fertility problems, muscle weakness, loss of energy, and depression. Furthermore, hypogonadism also increases the risk of osteoporosis and is associated with the metabolic syndrome and cardiovascular disease (CVD). The hypothesized "Testicular Dysgenesis Syndrome" comprising low sperm counts, hypospadias, cryptorchidism, and finally TC, probably contributes to hypogonadism independent of applied TC treatment. Recently, an increased risk of accelerated hormonal ageing has been reported in TCSs in the very long term, i.e. 20 years after TC treatment. Copyright © 2015 Elsevier Inc. All rights reserved.

  11. Potential testicular toxicity of sodium nitrate in adult rats.

    Science.gov (United States)

    Aly, Hamdy A A; Mansour, Ahmed M; Abo-Salem, Osama M; Abd-Ellah, Hala F; Abdel-Naim, Ashraf B

    2010-02-01

    Nitrate is a common contaminant in groundwater aquifers. Current study aimed at evaluating the potential testicular toxicity of sodium nitrate in rats. Sodium nitrate was given orally to rats at doses of 50, 100 or 200 mg/kg/day for 60 consecutive days. Sperm count and motility, daily sperm production and testis weight were significantly decreased specially at high doses. Testicular activity of lactate dehydrogenase-X, glucose-6-phosphate dehydrogenase, and acid phosphatase were inhibited in a dose-related manner. Lipid peroxides and hydrogen peroxide production were significantly increased in all treated animals. This was accompanied by inhibition of testicular activities of superoxide dismutase and glutathione peroxidase. Fifty mg/kg of sodium nitrate did not significantly alter catalase or glutathione reductase activity. Glutathione was significantly decreased by sodium nitrate in a dose-related manner. The decrease in sperm count and motility and daily sperm production was confirmed by histopathological studies which indicated chromatolysis, pyknosis and necrosis in spermatocytes. In conclusion, subchronic exposure of rats to sodium nitrate results in testicular toxicity as evidenced by decreased sperm count and motility, daily sperm production and testis weight, inhibited activity of enzyme markers of spermatogenesis and induction of histopathological changes. These effects are attributed, at least partly, to testicular oxidative stress. Copyright 2009. Published by Elsevier Ltd.

  12. MANNAN OLIGOSACCHARIDES AND ENZYMES IN CORN AND SOYBEAN MEAL BASED-DIETS FOR BROILERS MANANOLIGOSSACARÍDEOS E ENZIMAS EM DIETAS À BASE DE MILHO E FARELO DE SOJA PARA AVES

    Directory of Open Access Journals (Sweden)

    Vera Maria Barbosa de Moraes

    2007-09-01

    Full Text Available

    Mannan oligosaccharides, as an alternative to an-tibiotics, show promising results related to bird perfor-mance, immunity stimulus and improvement of intestinal mucosa. Enzyme inclusion in diets containing mannan oli-gosaccharides could improve these results. Poultry diets consist of corn and soybean meal, and approximately 30% of the phosphorus (P in these ingredients is bound to phytic acid. Phytase is capable of release not only the P but also other nutrients that can be better used by the birds while corn is relatively free of viscosous nonstarch poly-saccharides (NSP, soybean has about 20% of NSP, whose digestibility is almost null. NSP`s insoluble component of corn and soybean encapsulate nutrients and are responsive to exogenous enzymes. Negative environmental and nutri-tional consequences of dietary phytic acid are reduced by phytase inclusion in monogastric diets. Additionally, the enzymatic complex supplementation improves the nutri-tional value of feedstuffs through higher digestibility in birds. Finally, the use of exogenous enzymes allows re-duction in feed costs.

    KEY-WORDS: Animal nutrition, enzymatic supplementation, prebiotic.

    Os mananoligossacarídeos, como alternativa aos antibióticos, têm apresentado resultados promissores no que se refere tanto ao desempenho das aves quanto ao estímulo da imunidade e à melhora da mucosa intestinal. A inclusão de enzimas nas dietas contendo mananoligossacarídeos poderia melhorar ainda mais esses resultados. As dietas para aves são compostas de milho e farelo de soja, principalmente, e cerca de 30% do fósforo (P desses in-gredientes estão ligados ao ácido fítico. A fitase libera não só o P, mas também outros nutrientes para que sejam me-lhor utilizados pelas aves. O milho é relativamente isento de polissacarídeos não-amiláceos (PNAs viscosos e a soja apresenta cerca de 20% de PNAs, com digestibilidade praticamente nula. Os componentes insolúveis dos PNAs do

  13. Nueve casos del sindrome HELLP (hemolisis, enzimas hepaticas Elevadas y plaquetopenia

    Directory of Open Access Journals (Sweden)

    M. F. Capellino

    2003-10-01

    Full Text Available El síndrome HELLP (hemólisis, enzimas hepáticas elevadas y plaquetopenia descripto por Weinstein en 1982, se asocia a alta morbi-mortalidad materna y perinatal. Se evaluaron retrospectivamente las pacientes que presentaron síndrome HELLP entre marzo 1998 y marzo 2001 en el Hospital Privado de Córdoba. Se identificaron nueve pacientes con Síndrome HELLP (incidencia 2.3‰. La edad media de las pacientes fue 24.5 años (15-36 con una edad gestacional media de 34.5 semanas (29-40. Cinco pacientes fueron nulíparas. El síntoma principal fue epigastralgia (77.7%. El parto fue por cesárea en siete pacientes y tres tuvieron síndrome HELLP post-parto. Tres pacientes presentaron hipertensión de difícil manejo, una eclampsia y otra coagulación intravascular diseminada, insuficiencia renal aguda y muerte. Tres requirieron transfusión de derivados sanguíneos y el promedio de internación fue 4.4 días. Seis (75% neonatos fueron pretérmino. El peso medio de nacimiento fue 2030 gramos (736-3200. Cuatro recién nacidos tuvieron un score de Apgar menor de 7 al minuto y todos mayor de 7 a los cinco minutos. Tres neonatos presentaron trastornos alimentarios, uno hipoglucemia y otro enfermedad de membrana hialina, ductus arterioso permeable, sepsis y plaquetopenia. Debido a la morbi-mortalidad materna y perinatal el síndrome HELLP requiere atención en un centro de alta complejidad mediante un equipo multidisciplinario.HELLP syndrome (Hemolysis, Elevated Liver Enzymes and Low Platelets was described by Weinstein in 1982. It has a high maternal and perinatal morbi-mortality rate. We undertook this study to evaluate perinatal outcome in patients with HELLP syndrome. Patients with HELLP syndrome were identified in a retrospective study between March 1998 and March 2001 at the Hospital Privado de Córdoba. Maternal and neonatal variables were analized. Nine patients with HELLP syndrome were identified (incidence 2.3‰. Mean maternal age was 24.5 (15

  14. Pattern of Testicular Biopies as Seen in a Tertiary Institution in ...

    African Journals Online (AJOL)

    Background: Testicular biopsy is an acknowledged method of examination of the testes for diagnostic and therapeutic purposes. We describe the pattern of testicular histologies in our environment. Materials and Methods: We carried out a retrospective review of testicular histology results from the Pathology Department of ...

  15. File list: DNS.Gon.10.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Gon.10.AllAg.Testicular_somatic_cells mm9 DNase-seq Gonad Testicular somatic ce...lls http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Gon.10.AllAg.Testicular_somatic_cells.bed ...

  16. File list: DNS.Gon.05.AllAg.Testicular_germ_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Gon.05.AllAg.Testicular_germ_cells mm9 DNase-seq Gonad Testicular germ cells ht...tp://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Gon.05.AllAg.Testicular_germ_cells.bed ...

  17. Study on the incidence of testicular and epididymal appendages in patients with cryptorchidism

    Directory of Open Access Journals (Sweden)

    Favorito Luciano A.

    2004-01-01

    Full Text Available OBJECTIVE: To study the incidence of testicular and epididymal appendages in patients with cryptorchidism. MATERIALS AND METHODS: We studied 65 patients with cryptorchidism, totalizing 83 testes and 40 patients who had prostate adenocarcinoma and hydrocele (control group, totalizing 55 testes. The following situations were analyzed: I absence of testicular and epididymal appendages, II presence of testicular appendage only, III presence of epididymal appendage, IV presence of testicular and epididymal appendage, V presence of 2 epididymal appendages and 1 testicular appendage and VI presence of paradidymis or vas aberrans of Haller. RESULTS: In patients with cryptorchidism we found testicular appendages in 23 cases (41.8%, epididymal appendages in 9 (16.3%, testicular and epididymal appendage in 8 (14.5%, 2 epididymal appendages and 1 testicular in 1 (1.8% and absence of appendages in 14 (25.4%. In the control group, we found testicular appendages in 29 (34.9%, epididymal appendages in 19 (22.8%, testicular and epididymal appendage in 7 (8.4%, and absence of appendages in 28 (33.7%, we did not find 2 epididymal appendages in this group, and none of the patients in the 2 groups presented paradidymis or vas aberrans of Haller. CONCLUSION: The occurrence of testicular and epididymal appendages is quite variable. There was no statistically significant difference in the incidence and distribution of the testicular and epididymal appendages between patients with cryptorchidism and those from the control group.

  18. File list: DNS.Gon.05.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  19. File list: Oth.Gon.10.AllAg.Testicular_germ_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  20. File list: Oth.Gon.05.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  1. File list: ALL.Gon.20.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Gon.20.AllAg.Testicular_somatic_cells mm9 All antigens Gonad Testicular somatic... cells SRX591728,SRX591729,SRX591717,SRX591716 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Gon.20.AllAg.Testicular_somatic_cells.bed ...

  2. File list: Oth.Gon.20.AllAg.Testicular_germ_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  3. File list: Oth.Gon.50.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  4. File list: Pol.Gon.50.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Gon.50.AllAg.Testicular_somatic_cells mm9 RNA polymerase Gonad Testicular somat...ic cells http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Gon.50.AllAg.Testicular_somatic_cells.bed ...

  5. File list: Pol.Gon.05.AllAg.Testicular_germ_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Gon.05.AllAg.Testicular_germ_cells mm9 RNA polymerase Gonad Testicular germ cel...ls http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Gon.05.AllAg.Testicular_germ_cells.bed ...

  6. File list: ALL.Gon.50.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Gon.50.AllAg.Testicular_somatic_cells mm9 All antigens Gonad Testicular somatic... cells SRX591728,SRX591729,SRX591717,SRX591716 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Gon.50.AllAg.Testicular_somatic_cells.bed ...

  7. File list: Pol.Gon.10.AllAg.Testicular_germ_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Gon.10.AllAg.Testicular_germ_cells mm9 RNA polymerase Gonad Testicular germ cel...ls http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Gon.10.AllAg.Testicular_germ_cells.bed ...

  8. File list: Unc.Gon.50.AllAg.Testicular_germ_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Gon.50.AllAg.Testicular_germ_cells mm9 Unclassified Gonad Testicular germ cells... http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Gon.50.AllAg.Testicular_germ_cells.bed ...

  9. File list: DNS.Gon.10.AllAg.Testicular_germ_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Gon.10.AllAg.Testicular_germ_cells mm9 DNase-seq Gonad Testicular germ cells ht...tp://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Gon.10.AllAg.Testicular_germ_cells.bed ...

  10. File list: Oth.Gon.05.AllAg.Testicular_germ_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Gon.05.AllAg.Testicular_germ_cells mm9 TFs and others Gonad Testicular germ cel...ls http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Gon.05.AllAg.Testicular_germ_cells.bed ...

  11. File list: Unc.Gon.20.AllAg.Testicular_germ_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Gon.20.AllAg.Testicular_germ_cells mm9 Unclassified Gonad Testicular germ cells... http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Gon.20.AllAg.Testicular_germ_cells.bed ...

  12. File list: DNS.Gon.20.AllAg.Testicular_germ_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Gon.20.AllAg.Testicular_germ_cells mm9 DNase-seq Gonad Testicular germ cells ht...tp://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Gon.20.AllAg.Testicular_germ_cells.bed ...

  13. File list: Pol.Gon.50.AllAg.Testicular_germ_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Gon.50.AllAg.Testicular_germ_cells mm9 RNA polymerase Gonad Testicular germ cel...ls http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Gon.50.AllAg.Testicular_germ_cells.bed ...

  14. A study on testicular characteristics of ram lambs of Arsi breed fed ...

    African Journals Online (AJOL)

    A study on testicular characteristics of ram lambs of Arsi breed fed on two maize varieties (QPM and BH540) ... The results suggest that the plane of nutrition influences testicular size. Whole plant silage feeding provided improved testicular size. Therefore, maize whole plant silage feeding might be helpful to improve the ...

  15. Assessment of testicular volume: A comparison of fertile and sub-fertile West African men

    Directory of Open Access Journals (Sweden)

    K.H. Tijani

    2014-09-01

    Conclusion: Testicular volume on scrotal ultrasound correlates well with severity of oligospermia in men with sub-fertility. While the critical mean testicular volume necessary for adequate spermatogenesis has not been determined, it appears there is an optimal testicular volume of 18–20 ml at which spermatogenesis is at its peak in sub-fertile Nigerian men.

  16. File list: DNS.Gon.20.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

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    Full Text Available DNS.Gon.20.AllAg.Testicular_somatic_cells mm9 DNase-seq Gonad Testicular somatic ce...lls http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Gon.20.AllAg.Testicular_somatic_cells.bed ...

  17. File list: Pol.Gon.10.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Gon.10.AllAg.Testicular_somatic_cells mm9 RNA polymerase Gonad Testicular somat...ic cells http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Gon.10.AllAg.Testicular_somatic_cells.bed ...

  18. File list: Pol.Gon.20.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

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    Full Text Available Pol.Gon.20.AllAg.Testicular_somatic_cells mm9 RNA polymerase Gonad Testicular somat...ic cells http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Gon.20.AllAg.Testicular_somatic_cells.bed ...

  19. File list: Oth.Gon.20.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

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    Full Text Available Oth.Gon.20.AllAg.Testicular_somatic_cells mm9 TFs and others Gonad Testicular somat...ic cells http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Gon.20.AllAg.Testicular_somatic_cells.bed ...

  20. File list: Unc.Gon.20.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

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    Full Text Available Unc.Gon.20.AllAg.Testicular_somatic_cells mm9 Unclassified Gonad Testicular somatic... cells http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Gon.20.AllAg.Testicular_somatic_cells.bed ...

  1. File list: ALL.Gon.05.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Gon.05.AllAg.Testicular_somatic_cells mm9 All antigens Gonad Testicular somatic... cells SRX591729,SRX591728,SRX591717,SRX591716 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Gon.05.AllAg.Testicular_somatic_cells.bed ...

  2. File list: Pol.Gon.20.AllAg.Testicular_germ_cells [Chip-atlas[Archive

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    Full Text Available Pol.Gon.20.AllAg.Testicular_germ_cells mm9 RNA polymerase Gonad Testicular germ cel...ls http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Gon.20.AllAg.Testicular_germ_cells.bed ...

  3. File list: Unc.Gon.05.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

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    Full Text Available Unc.Gon.05.AllAg.Testicular_somatic_cells mm9 Unclassified Gonad Testicular somatic... cells http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Gon.05.AllAg.Testicular_somatic_cells.bed ...

  4. File list: His.Gon.20.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

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    Full Text Available His.Gon.20.AllAg.Testicular_somatic_cells mm9 Histone Gonad Testicular somatic cell...s SRX591729,SRX591717 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Gon.20.AllAg.Testicular_somatic_cells.bed ...

  5. File list: Unc.Gon.10.AllAg.Testicular_germ_cells [Chip-atlas[Archive

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    Full Text Available Unc.Gon.10.AllAg.Testicular_germ_cells mm9 Unclassified Gonad Testicular germ cells... http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Gon.10.AllAg.Testicular_germ_cells.bed ...

  6. File list: His.Gon.10.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

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    Full Text Available His.Gon.10.AllAg.Testicular_somatic_cells mm9 Histone Gonad Testicular somatic cell...s SRX591729,SRX591717 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Gon.10.AllAg.Testicular_somatic_cells.bed ...

  7. File list: Unc.Gon.50.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

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    Full Text Available Unc.Gon.50.AllAg.Testicular_somatic_cells mm9 Unclassified Gonad Testicular somatic... cells http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Unc.Gon.50.AllAg.Testicular_somatic_cells.bed ...

  8. File list: DNS.Gon.50.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

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    Full Text Available DNS.Gon.50.AllAg.Testicular_somatic_cells mm9 DNase-seq Gonad Testicular somatic ce...lls http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Gon.50.AllAg.Testicular_somatic_cells.bed ...

  9. File list: His.Gon.05.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

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    Full Text Available His.Gon.05.AllAg.Testicular_somatic_cells mm9 Histone Gonad Testicular somatic cell...s SRX591729,SRX591717 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Gon.05.AllAg.Testicular_somatic_cells.bed ...

  10. File list: Unc.Gon.10.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

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  11. File list: Pol.Gon.05.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

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    Full Text Available Pol.Gon.05.AllAg.Testicular_somatic_cells mm9 RNA polymerase Gonad Testicular somat...ic cells http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Pol.Gon.05.AllAg.Testicular_somatic_cells.bed ...

  12. File list: His.Gon.50.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

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    Full Text Available His.Gon.50.AllAg.Testicular_somatic_cells mm9 Histone Gonad Testicular somatic cell...s SRX591729,SRX591717 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Gon.50.AllAg.Testicular_somatic_cells.bed ...

  13. File list: Oth.Gon.10.AllAg.Testicular_somatic_cells [Chip-atlas[Archive

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  14. File list: Oth.Gon.50.AllAg.Testicular_germ_cells [Chip-atlas[Archive

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  15. Análise sérica das enzimas aspartato aminotransferase, alanina aminotransferase e gama glutamiltranspeptidase de coelhos adultos tratados com extrato bruto de própolis

    Directory of Open Access Journals (Sweden)

    J. N. Ribeiro

    2009-01-01

    Full Text Available

    Diversos trabalhos têm atribuído a própolis inúmeras propriedades farmacológicas, dentre elas podemos citar, como exemplo, efeitos antibacteriano, antiviral, antiinflamatório, regenerador do tecido cartilaginoso, inibidor da formação de radicais livres e redutor de níveis sangüíneo de glicose e triacilglicerol. Alguns efeitos colaterais são atribuídos à própolis principalmente em doses elevadas. Muitos efeitos tóxicos da própolis são atribuídos ao álcool etílico presente no extrato.Dentre alguns efeitos tóxicos citados em literatura como realmente da própolis temos a dermatite e o aumento da uréia sangüínea. O presente estudo teve como objetivo investigar se o extrato bruto de própolis ocasiona algum efeito adverso nos níveis séricos de alanina aminotransferase, aspartato aminotransferase e gama – glutamiltranspeptidase de coelhos saudáveis. O experimento teve 30 dias de duração, sendo as dosagens dos constituintes do sangue (alanina aminotransferase, aspartato aminotransferase e gama – glutamiltranspeptidase realizadas a 0, 15 e 30 dias. Os resultados indicaram que, de o extrato bruto de própolis na forma testadea, não ocasionou alteração relevante nos níveis séricos das enzimas marcadoras de metabolismo hepático. Palavras-chave: Própolis, alanina aminotransferase, aspartato aminotransferase, gama glutamiltranpeptidase, toxicologia.

  16. Studies on the influence of radiation and chemotherapy on pituitary-testicular axis in patients with testicular tumor

    Energy Technology Data Exchange (ETDEWEB)

    Ogawa, Katsuaki (Yokohama City Univ. (Japan). Faculty of Medicine)

    1982-02-01

    Radiation and chemotherapy have been known as the highly effective treatment of patients with testicular tumor. To evaluate the influences of the therapies on pituitary-testicular axis, plasma FSH, LH and testosterone were determined by radioimmunoassay in 60 patients with testicular tumor before and after 1 to 102 months in the completion of radiation and chemotherapy. The results were summarized as follows: 1) In 10 out of 24 patients, plasma FSH and LH levels significantly increased within 20 months after 2,100 - 4,500 rad/3 - 6 weeks of radiation therapy. 2) In combination chromotherapy popularly used for testicular tumor, plasma FSH and LH in 8 of 22 patients markedly elevated within 20 months after the treatment. 3) The elevated gonadotropins returned to normal levels in approximately 50 months in patients received radiation or chemotherapy. 4) Plasma testosterone revealed normal levels in any therapeutic programs employed in the present study. 5) From the results of Gn-RH test, the pituitary gland seemed to have normal function. 6) Plasma testosterone showed incomplete response to hCG stimulation after 1 to 35 months of radiation or chemotherapy. Therefore, it was suggested that radiation and chemotherapy for the treatment of testicular tumor may impair not only seminiferous tubules but also Leydig cell for a couple of years.

  17. Using a vortex mixer for testicular sperm collection.

    Science.gov (United States)

    Tokuyama, Osamu; Nakamura, Yoshihiro; Ozaki, Koji; Kawashima, Kazumi; Fujino, Yuji; Ishiko, Osamu

    2003-11-01

    To evaluate 2 methods of processing testicular tissue for the retrieval of viable sperm from men with nonobstructive azoospermia. Fresh testicular tissue was obtained from nonobstructive azoospermia patients using a biopsy needle. The specimens were divided into 2 fractions. All specimens were minced and immersed in human tubal fluid (HTF). The first fraction was filtered through a nylon filter and incubated for 3 hours. The supernatant was centrifuged, resuspended in HTF and analyzed. The second fraction was immediately vortexed for 5 minutes and filtered through a nylon filter. The supernatant was centrifuged, resuspended in HTF and analyzed. Spermatozoa were obtained in 13 of 24 cases (54.2%) using the vortex method and in 5 of 24 cases (20.8%) with the nylon filter method. The vortex mixing method may be a better option than the conventional method for processing testicular tissue for sperm collection.

  18. Efeito de enzimas de maceração na textura do palmito (Euterpe edulis Mart Influence of cellulase, pectinase and hemicellulase on the texture of hearts of palm (Euterpe edulis Mart.

    Directory of Open Access Journals (Sweden)

    Regina Kitagawa GRIZOTTO

    1997-12-01

    Full Text Available Com a finalidade de ampliar o aproveitamento da palmeira produtora do palmito estudou-se a influência da poligalacturonase e de enzimas maceradoras na textura das partes semi-rígidas do vegetal não-comestíveis, incubando-se preparados comerciais de celulase, hemicelulase e poligalacturonase com o palmito preparado na forma de pequenos toletes (1-3 cm de comprimento e em porções de 2cm do raquis do vegetal. Embora os tratamentos com hemicelulase e mistura de hemicelulase e poligalacturonase tenham promovido ligeiro amaciamento do palmito, os resultados mostraram ,de modo geral, acréscimo na textura do palmito cortado em porções de 3,0 cm e em fatias de 1,0 cm indicando solubilização intensa das regiões suscetíveis a hidrólise com a permanência das regiões duras mais ricas em lignina. Como nos outros tecidos do palmito, no raquis fibroso, não foi comprovada estatiscamente a ação das enzimas na textura do vegetal.With the aim of amplifying the utilization of the palm tree the influence of poligalacturonase and macerating enzymes on the texture of the hard tips of hearts of palm was studied, incubating commercial preparations of cellulase , hemicellulase and poligalacturonase with the hearts of palm, prepared as small stalks of 1-3 cm length and with 2 cm portions of the rachis of the plant. Although the treatments containing hemicellulase and a mixture of hemicellulase and poligalacturonase promoted a slight softening of the hearts of palm, the results generally showed a hardening of the texture of the hearts of palm prepared as stalks of 1 to 3 cm indicating great solubilization of the parts susceptible to hydrolysis, the hard lignin rich parts remaining intact. As in the other tissue of the plant, in the rachis of the fibrous hearts of palm, the action of the enzymes was not statiscally proven.

  19. Enzimas carboidrases na dieta de porcas lactantes e suas leitegadas Carbohydrase enzymes in diets for lactating sows and their litters

    Directory of Open Access Journals (Sweden)

    Débora Cristina Nichelle Lopes

    2009-12-01

    Full Text Available O experimento foi realizado para se avaliar o uso de um complexo enzimático (CE contendo carboidrases na dieta de porcas lactantes e de suas leitegadas. Foram utilizadas 264 fêmeas cruzadas geneticamente homogêneas, que foram bloqueadas pela ordem de parto e distribuídas ao acaso em quatro tratamentos, resultantes de um arranjo fatorial 2x2 (dieta lactação (DL x dieta pré-inicial (DPI, com dois níveis cada fator (com e sem CE. Nas porcas, foram avaliados: peso ao desmame (PDESM; variação do peso corporal; espessura de toucinho (ET; variação de ET; escore corporal (EC; consumo de ração (CRF e composição do leite e nas leitegadas: consumo de ração (CRL; peso da leitegada ao nascer e ao desmame (PLDESM; e peso médio do leitão ao desmame (PMLDESM. Não houve interação significativa entre DL e DPI para nenhuma variável resposta. O PDESM, a ET, a variação de ET, o EC e a composição do leite (teores de gordura, proteína bruta, lactose e matéria seca das porcas não foram influenciados (P>0,10 pela adição de enzimas na DL e na DPI. O CRF e o CRL não foram influenciados (P>0,10 pelos tratamentos. O PLDESM e o PLMDESM foram significativamente maiores quando as porcas receberam DL suplementada com CE, em comparação àquelas que não receberam CE na dieta (74,6 vs 72,9kg e 6,32 vs 6,47kg, respectivamente. Houve um aumento de 1,7kg no PLDESM e de 0,15kg no PLMDESM (P=0,06 e P=0,07, respectivamente, resultando em um incremento estimado de 2,27kg de peso vivo quando os animais chegam ao peso de abate. Porcas alimentadas com rações suplementadas com complexo enzimático contendo carboidrases apresentam leitegadas mais pesadas ao desmame.This research was conducted to evaluate the effect of adding enzymatic complex (EC containing carbohydrases to diets for lactating sows and their litters. A total of 264 genetically homogeneous crossbred sows were used. They were blocked by farrowing order and randomly allotted to four

  20. Síntesis de las enzimas de piruvato, oxidorreductasa de ferredoxina y deshidrogenasa E de alcohol durante el desenquistamiento (excystacion de Giardia intestinalis

    Directory of Open Access Journals (Sweden)

    Carlos Alberto Niño

    2010-03-01

    Conclusiones. Nuestros resultados muestran de forma concluyente que las enzimas PFOR y ADHE son traducidas en el proceso de desenquistamiento (excystacion y esto demuestra que existe un proceso activo de síntesis de proteínas durante él.

  1. A conservative approach to testicular rupture in adolescent boys.

    Science.gov (United States)

    Cubillos, Jimena; Reda, Edward F; Gitlin, Jordan; Zelkovic, Paul; Palmer, Lane S

    2010-10-01

    Management for blunt trauma with breach of the renal capsule or bladder (extraperitoneal) has largely become nonsurgical since a conservative approach proved to be effective and safe. Currently the recommendation for managing testicular rupture is surgical exploration and débridement or orchiectomy. We report outcomes in boys diagnosed with testicular rupture and treated without surgical intervention. In the last year we conservatively treated 7 consecutive boys with delayed presentation of testicular rupture after blunt scrotal trauma. Patients were treated with scrotal support, antibiotics to prevent abscess, rest, analgesics and serial ultrasound. We report clinical information and outcomes. The 7 boys were 11 to 14 years old and presented 1 to 5 days after injury. Trauma was to the left testis in 3 cases and to the right testis in 4. Patients presented with mild to moderate pain and similar scrotal swelling. Ultrasound findings consistently revealed hematocele and increased echogenicity. Blood flow was present in the injured portion of the testes in 3 cases and to the remainder of the affected testicle in 6 of the 7 boys. In the remaining boy an adequate waveform was not seen in either testicle, which the radiologist thought was secondary to prepubertal status. Other findings included scrotal edema, irregular contour and seminiferous tubule extrusion. Followup was greater than 6 months in all cases. Five boys were seen at the office and the 2 remaining had telephone followup. In all cases hematocele resolved, testicular size stabilized without atrophy and echogenicity normalized in the 5 patients with followup ultrasound. One patient required surgical repair of hydrocele 4 months after trauma but no other patient needed surgical exploration. No abscess or infection developed. A conservative approach in a select group of adolescent boys with testicular rupture can result in resolution of the fracture and maintenance of testicular architectural integrity

  2. Global trends in testicular cancer incidence and mortality.

    Science.gov (United States)

    Rosen, Alexandre; Jayram, Gautam; Drazer, Michael; Eggener, Scott E

    2011-08-01

    Epidemiologic studies on testicular cancer have focused primarily on European countries. Global incidence and mortality have been less thoroughly evaluated. Our goal was to gain a better understanding of the most recent global age-standardized incidence and mortality rates for testicular cancer and to use these values to estimate a region's health care quality. Age-standardized incidence rate (ASIR) and age-standardized mortality rate (ASMR) for testicular cancer were obtained for men of all ages in 172 countries by using the GLOBOCAN 2008 database, reflecting the annual rate of cancer incidence and mortality per 100,000 men. These data were evaluated on a regional level to compare incidence and mortality rates. Global plots of these values were constructed to better visualize geographic distributions. Finally, the ratio of ASIR to ASMR was calculated as a method to assess each region's proficiency in diagnosing and effectively treating testicular cancer. ASIR and ASMR were analyzed by region, and each region's ratio of ASIR to ASMR was calculated. Testicular cancer ASIR is highest in Western Europe (7.8%), Northern Europe (6.7%), and Australia (6.5%). Asia and Africa had the lowest incidence (ASMR was highest in Central America (0.7%), western Asia (0.6%), and Central and Eastern Europe (0.6%). Mortality was lowest in North America, Northern Europe, and Australia (0.1-0.2%). The ASIR-ASMR ratio was highest in Australia (65.0%) and lowest in western Africa (1.0%). National reporting systems varied by country, and data quality may have fluctuated between regions. Testicular cancer incidence remains highest in developed nations with primarily Caucasian populations. Variable ASIR-ASMR ratios suggest markedly different geographic-specific reporting mechanisms, access to care, and treatment capabilities. Copyright © 2011 European Association of Urology. Published by Elsevier B.V. All rights reserved.

  3. Oxidative enzymes activity in sugarcane juice as a function of the planting system Atividade de enzimas oxidativas em caldo de cana-de-açúcar em função do sistema de plantio

    Directory of Open Access Journals (Sweden)

    Tadeu Alcides Marques

    2013-03-01

    com diferentes formas de palhiço, bem como os sistemas de plantio, não promoveram alterações nas atividades enzimáticas das enzimas polifenoloxidase (PFO e peroxidase (POD. A atividade da PFO foi incrementada com a utilização de polímero, este fato foi promovido pelo aumento de atividade da PFO no sistema de plantio em sulco. As enzimas estudadas apresentaram mudanças de atividades nos meses. A produção de açúcar no final da safra (agosto a novembro evita os períodos de maiores atividades enzimáticas.

  4. Sexual dysfunctions in men treated for testicular cancer

    DEFF Research Database (Denmark)

    Rosendal, Susanne; Kristensen, Ellids; Giraldi, Annamaria G E

    2008-01-01

    Patients treated for testicular cancer have increased risk of ejaculatory, orgasmic and erectile dysfunction compared with healthy men. The underlying relations are unclear. This review describes sexual dysfunctions that are associated with various treatment modalities. One meta-analysis and 11...... original works were examined. About one third of the patients experience one or more sexual problems in relation to the treatment. Only retroperitoneal surgery can cause a specific sexual dysfunction, namely loss of ejaculation ability or ejaculatory functioning. Psychosexual causes are important...... for understanding sexual dysfunctions in patients with testicular cancer....

  5. Testicular cancer in Down syndrome with spinal cord metastases

    Directory of Open Access Journals (Sweden)

    Turky Almouhissen

    2016-01-01

    Full Text Available A 22-year-old male patient with Down syndrome was referred to our hospital with a vast left testicular mass. He underwent a left radical inguinal orchiectomy, and a histopathological examination of the mass showed a yolk sac tumor invading the epididymis. The patient was discharged in a satisfactory condition. Sixteen days later, the patient presented again complaining of lower limb weakness. Magnetic resonance imaging of the spine showed metastatic lesions compressing the dorsal spine, and he underwent emergency surgical decompression. The histopathology of the metastatic lesions revealed a yolk sac subtype which was identical to his primary testicular tumor.

  6. Testicular cancer in Down syndrome with spinal cord metastases

    Science.gov (United States)

    Almouhissen, Turky; Badr, Hattan; AlMatrafi, Bassam; Alessa, Noor; Nassir, Anmar

    2016-01-01

    A 22-year-old male patient with Down syndrome was referred to our hospital with a vast left testicular mass. He underwent a left radical inguinal orchiectomy, and a histopathological examination of the mass showed a yolk sac tumor invading the epididymis. The patient was discharged in a satisfactory condition. Sixteen days later, the patient presented again complaining of lower limb weakness. Magnetic resonance imaging of the spine showed metastatic lesions compressing the dorsal spine, and he underwent emergency surgical decompression. The histopathology of the metastatic lesions revealed a yolk sac subtype which was identical to his primary testicular tumor. PMID:28058004

  7. Transverse testicular ectopia with a blind ending vas deferens

    Directory of Open Access Journals (Sweden)

    Anjan Kumar Dhua

    2016-01-01

    Full Text Available Transverse testicular ectopia (TTE is an uncommon anomaly of testicular descent. Herein, we describe a case of TTE with blindly ending vas and persistent Mόllerian duct syndrome in a 2-year-old child. Orchidopexy could be done through the normal orthotopic route after separating it from the Mόllerian structure and dividing the peritoneal fold just distal to the blindly ending vas. The report highlights that laparoscopy is useful for identifying subtle anomalies in addition to its therapeutic role.

  8. Ultrasonographic diagnosis of torsion of testicular appendages; Diagnostico por ecografia de la torsion de los apendices testiculares

    Energy Technology Data Exchange (ETDEWEB)

    Esparza, J.; Gonzalez, A.; Cordero, J. L. [Hospital Virgen del Camino. Pamplona (Spain)

    2000-07-01

    To determine the efficacy of ultrasound in boys presenting torsion of a testicular appendage. A series of 30 boys with acute scrotal pain due to torsion of a testicular appendage was studied. Nine patients underwent surgery. The clinical findings and course in the remaining 21 suggested the presence of this abnormality. All of them underwent conventional and color Doppler ultrasound using a 7.5 MHz transducer. In 15 boys, ultrasound images depicted the affected appendage as a mass between the epididymal head and the testicle. In 13 cases, only signs of a inflammatory reaction, with enlargement of the epididymal head and tunicas presenting hyperflow and hydrocele, mimicking acute epididymities. In two cases, the images were normal. There is no definitive, distinguishing ultrasound image corresponding to testicular appendage torsion. Therefore, this diagnostic technique should be accompanied by clinical assessment. (Author) 14 refs.

  9. Morfologia testicular de ratos Wistar obesos sedentários e submetidos a treinamento físico = Testicular morphology in obese and sedentary Wistar rats submitted to physical training

    Directory of Open Access Journals (Sweden)

    Ken Sekine Takashiba

    2011-01-01

    Full Text Available O objetivo deste trabalho foi avaliar morfologicamente os efeitos da dieta de cafeteria e o treinamento físico em esteira sobre o testículo de ratos Wistar. Ratos machos adultos foram divididos em grupos (sedentário-controle; sedentário-cafeteria; treinado-controle; e treinadocafeteria. Para comprovar a instalação da obesidade calculou-se o índice de Lee e o peso dos tecidos adiposos periepididimal e retroperitoneal. A análise testicular envolveu o peso da gônada e após processamento histológico e coloração por Hematoxilina-Eosina, os parâmetros de diâmetro tubular, altura do epitélio seminífero, identificação dos tipos celulares presentes nos túbulos seminíferos, contagem de células e rendimento geral da espermatogênese. O aumento significativo do Índice de Lee e do peso dos tecidos adiposos, nos grupos que receberam dieta de cafeteria, comprovou a instalação da obesidade e indicou ser este um modelo adequado para induzir obesidade experimental. Não houve efeito da dieta ou do treinamento sobre o peso testicular, diâmetro tubular e altura do epitélio seminífero não havendo também diferenças na organização histológica dos testículos e túbulos seminíferos. Após quantificação celular e cálculo dos índices mitótico e meiótico e da capacidade total de suporte das células de Sertoli, verificamos efeito positivo do treinamento físico, independente da dieta recebida, sobre o rendimento geral da espermatogênese.The aim of this study was to morphologically evaluate the effects of the cafeteria diet and physical training on the testicles of adult Wistar rats. Adult male rats were divided into groups (sedentary-control, sedentary-cafeteria, trained-control, and trainedcafeteriaIn order to state the obesity condition both the Lee index and the weight of retroperitoneal and periepididymal adipose tissues were calculated. The testicular analysis involved the gonad weight and after the histological processing

  10. Diagnosis and management of testicular rupture after blunt scrotal trauma: a literature review.

    Science.gov (United States)

    Wang, Zhao; Yang, Jin-Rui; Huang, Yu-Meng; Wang, Long; Liu, Long-Fei; Wei, Yong-Bao; Huang, Liang; Zhu, Quan; Zeng, Ming-Qiang; Tang, Zheng-Yan

    2016-12-01

    Testicular rupture, one of the most common complications in blunt scrotal trauma, is the rupture of tunica albuginea and extrusion of seminiferous tubules. Testicular rupture is more inclined to young men, and injury mechanisms are associated with sports and motor accidents. After history taking and essential physical examination, scrotal ultrasound is the first-line auxiliary examination. MRI is also one of the vital complementary examinations to evaluate testicular rupture after blunt scrotal trauma. Surgical exploration and repair may be necessary when the diagnosis of testicular rupture is definite or suspicious. Postoperative follow-up is to monitor the relief of local symptoms and changes of testicular functions. This review sums up the literatures about testicular rupture after blunt scrotal trauma in recent 16 years and also refers some new advantages and perspectives on diagnosis and management of testicular rupture.

  11. Implicações estruturais de mutantes da piridoxal quinase de Plasmodium falciparum

    OpenAIRE

    Thales Kronenberger

    2014-01-01

    O metabolismo de vitamina B9 é um alvo terapêutico conhecido para malária. A vitamina B6 foi validada como essencial para o parasita. Esse trabalho analisa bioquimica- e estruturalmente mutantes da enzima piridoxal quinase, pela combinação de análises in silico associadas a ensaios bioquímicos. A estrutura da PdxK de P. falciparum permitiu a localização do sítio ativo e da interface de dimerização. Logo foram sugeridas mutações que alterassem esses resíduos para investigar sua importância. Di...

  12. Testicular neoplasia in undescended testes of cryptorchid boys-does surgical strategy have an impact on the risk of invasive testicular neoplasia?

    DEFF Research Database (Denmark)

    Cortes, Dina; Thorup, Jørgen Mogens; Petersen, Bodil Laub

    2004-01-01

    testes, or if the patient has abnormal external genitalia or a known abnormal karyotype. These clinical characteristics occur most often in cases of bilateral cryptorchidism. 2) Surgery for cryptorchidism before 10 years of age 3) Clinical control, after surgery for cryptorchidism. In cases of testicular...... in special categories of patients, and also of the incidence of testicular neoplasia after orchiopexy with a simultaneous testicular biopsy in childhood. At surgery for cryptorchidism the risk of testicular neoplasia was 7/182 (4%) in cases with intra-abdominal testis, abnormal external genitalia other than...... cryptorchidism, or diagnosed abnormal karyotype, versus no case in the 1281 patients without these characteristics (Fisher's exact test, p test...

  13. Ectopia testicular perineal: presentación de un caso Perineal testicular ectopia: a case report

    Directory of Open Access Journals (Sweden)

    Vivian Vialat Soto

    2008-09-01

    Full Text Available La ectopia testicular perineal es una anomalía congénita infrecuente y se incluye dentro del síndrome de escroto vacío. Se reporta el caso de un paciente con escroto derecho vacío y masa perineal ipsolateral palpable, asociada a hernia inguinal derecha. El paciente fue operado en el Hospital Pediátrico Universitario de Centro Habana. Durante la exploración quirúrgica el testículo derecho y su gubernaculum testis se encontraban fijados en el perineo derecho. Las características del testículo y sus elementos eran normales. El testículo se fijó en el escroto derecho sin dificultad. La detección precoz de esta patología y su corrección quirúrgica en el tiempo establecido favoreció la funcionalidad del órgano.Perineal testicular ectopia is a rare congenital anomaly and it is included in the empty scrotum syndrome. The case of a patient with empty right scrotum and a palpable ipsilateral perineal mass associated with a right inguinal hernia is reported. The patient was operated on in "Centro Habana" University Children Hospital. During the surgical exploration, the right testicle and its gubernaculum testis were fixed to the right perineum. The characteristics of the testicle and its elements were normal. The testicle was fixed to the right scrotum without difficulty. The early detection of this pathology and its surgical repair on time, favored the functionality of the organ.

  14. Desenvolvimento corpóreo, testicular e concentrações séricas de testosterona em machos Brahman

    Directory of Open Access Journals (Sweden)

    Marcelo George Mungai Chacur

    2017-08-01

    Full Text Available Objetivou-se estudar o desenvolvimento corpóreo, testicular e a concentração sérica de testosterona dos 8 aos 18 meses de idade de machos Brahman em prova de ganho de peso à pasto. Os bovinos (n=40 com idade de 259,76±26,15 dias e peso de 239,71±33,94kg, foram avaliados a cada 56 dias, em seis momentos, respectivamente, aos 8, 10, 12, 14, 16 e 18 meses de idade para: peso corpóreo (PC, circunferência escrotal (CE, perímetro torácico (PT, altura de cernelha (HC, comprimento corporal (CC, índice de massa corpórea (IMC, comprimento testicular direito (CTD e esquerdo (CTE, altura testicular direita (HTD e esquerda (HTE, ganho médio diário de peso corpóreo (GMD, volume testicular (VT e concentração sérica de testosterona (TES.Utilizou-se a análise de variância, seguida por Tukey a 5%. Para as correlações entre variáveis se empregou o método de Pearson a 5%. Houve diferença (P < 0,05 dos 12 meses de idade em diante para GMD e TES. Houve diferenças (P < 0,05 para: PC, CE, PT, HC, CC, IMC, CTD, CTE, HTD e VT à partir de 14 meses de idade. Houve correlações positivas entre: TES x PT (r = 0,38; P < 0,01; TES x HC (r = 0,38; P < 0,01; TES x HTD (r = 0,23; P < 0,05; TES x HTE (r = 0,21; P < 0,01; TES x VT (r = 0,22; P < 0,008 e do VT x peso (r = 0,70; P < 0,01; VT x CE (r = 0,90; P < 0,01 e VT x IMC (r = 0,93; P < 0,01. A elevação rápida da concentração sérica de testosterona ocorreu entre 12 e 14 meses de idade. Houve rápido crescimento corpóreo e dos testículos após a elevação significativa de testosterona. A elevação da testosterona, de forma indireta, indica a proximidade da aceleração do crescimento corpóreo e testicular. Recomenda-se calcular o índice de massa corpórea e o volume testicular para acompanhar o crescimento dos bovinos, devido à alta correlação entre essas variáveis.

  15. Ultrasound measurements of testicular volume: Comparing the three ...

    African Journals Online (AJOL)

    T.U. Mbaeri

    Objective: To determine the accuracy of various ultrasound formulas for measuring the testicular volume in humans by comparing the resultant ... of the components of a minimum full evaluation of male infertility is palpation of the testes and ... opted for orchidectomy after counseling in our center. Subjects and methods.

  16. Original article Testicular Biopsies of Azoospermic Men at The ...

    African Journals Online (AJOL)

    mn

    The patients with normal spermatogenesis were further evaluated and managed for obstructive azoospermia while those with testicular hypofunction or failure were offered medical therapy and/or referred for assisted reproductive techniques. DISCUSSION. Male factor infertility remains a major challenge in clinical practice.

  17. Prevalence of testicular adrenal rest tissue in neonates.

    NARCIS (Netherlands)

    Bouman, A.; Hulsbergen- van de Kaa, C.A.; Claahsen-van der Grinten, H.L.

    2011-01-01

    BACKGROUND: Infertility is a serious complication among male congenital adrenal hyperplasia (CAH) patients which is often caused by testicular adrenal rest tumors (TART). TART are already present in childhood and early infancy in CAH patients. The incidence of TART in neonates without CAH has not

  18. Unusually Located Stroke After Chemotherapy in Testicular Germ Cell Tumors

    Directory of Open Access Journals (Sweden)

    Braulio Alexander Martinez MD

    2015-06-01

    Full Text Available Testicular cancer is a type of malignancy that affects young adults and has high rates of cure; however, as any malignancy, it is associated with an increased risk of ischemic or hemorrhagic cerebrovascular disease, given the systemic tumor effects or side effects of chemotherapy, which in turn increases morbidity, functional impairment, and additional risk of early death.

  19. a-Tocopherol (vitamin E) attenuates the testicular toxicity associated ...

    African Journals Online (AJOL)

    SERVER

    2007-06-18

    Jun 18, 2007 ... The results indicated that vitamin E moderated the deleterious effects of experimental cryptorchidism. Key words: ... testicular damage is in part, a consequence of increased generation of free radicals and oxidants ... the symptoms of aging (Eneslo and Verdone, 1980). The in vivo function of vitamin E as an ...

  20. Anomalous origin of left testicular artery from an additional renal ...

    African Journals Online (AJOL)

    Gonadal arteries arising from additional renal arteries present an important variation that should be noted in order to avoid inadvertent injury to these vessels in renal hilar dissection and retroperitoneal surgery. During routine dissection, we observed the unusual origin of the left testicular artery from an additional renal ...

  1. Accuracy of Prader orchidometer in measuring testicular volume

    African Journals Online (AJOL)

    2012-10-21

    Oct 21, 2012 ... hypogonadism and Klinefelter's syndrome.[14‑17]. Over the years, many instruments have been used in an attempt to accurately, reliably, and conveniently measure the testicular volume in vivo. These include rulers, tapes, vernier callipers, orchidometer, graphic models, and ultrasound scan.[8‑22] Results.

  2. The influence of dietary supplementation on testicular growth rate in ...

    African Journals Online (AJOL)

    good nutritional regime were relatively larger. Oldham,. Adams, Gherardi, Lindsay & Mac Kintosh (1978) and. Masters & Fels (1984) concluded that the testes seem to be particularly sensitive to changes in nutrition and that rams may gain or loose testicular volume at a greater rate than live mass. In Merino rams Oldham, ...

  3. Testicular microlithiasis is associated with ethnicity and socioeconomic status

    DEFF Research Database (Denmark)

    Pedersen, Malene Roland Vils; Bartlett, Emily C; Rafaelsen, Søren Rafael

    2017-01-01

    BACKGROUND: There are limited studies about testicular microlithiasis (TML) and background information such as health, lifestyle, and socioeconomic status. PURPOSE: To assess the prevalence of TML in relation to socioeconomic status and ethnicity. MATERIAL AND METHODS: From a database of scrotal...

  4. Testicular tuberculosis in an HIV positive patient mimicking ...

    African Journals Online (AJOL)

    B.A. Ojo

    We present a 22 years old male with a year history of progressively increasing painless left testicular swelling with no constitutional symptoms. ... increased in size with associated pain in the contra lateral testis. The general examination ... circumstances, colour Doppler ultrasound is useful, as blood flow within subjects with ...

  5. Impact of organic hydroperoxides on rat testicular tissue and ...

    African Journals Online (AJOL)

    PRECIOUS

    2009-11-16

    Nov 16, 2009 ... Organic hydroperoxides such as t-butyl hydroperoxide and cumene hydroperoxide have been implicated to cause oxidative stress leading to damage in membrane lipids, proteins, carbohydrates and DNA. This study was aimed to develop an in vivo animal model. The effects of hydroperoxides on testicular ...

  6. The effect of sperm morphology and testicular spermatozoa ...

    African Journals Online (AJOL)

    Objective. To determine the correlation between sperm morphology groups (strict criteria) and testicular spermatozoa, and day 2 and 3 embryo quality in intracytoplasmic sperm injection (ICSI) and in vitro fertilisation (IVF) cases. Methods. A retrospective study was done of 2 402 IVF and ICSI-fertilised embryos classified as ...

  7. Testicular adrenal rest tumours in congenital adrenal hyperplasia

    NARCIS (Netherlands)

    Claahsen-van der Grinten, H.L.; Hermus, A.R.M.M.; Otten, B.J.

    2009-01-01

    In adult patients with congenital adrenal hyperplasia (CAH), the presence of testicular adrenal rest tumours (TART) is an important complication leading to gonadal dysfunction and infertility. These tumours can be already found in childhood and puberty. In this paper, we review the embryological,

  8. Testicular Adrenal Rest Tumours in Congenital Adrenal Hyperplasia

    Science.gov (United States)

    Claahsen-van der Grinten, H. L.; Hermus, A. R. M. M.; Otten, B. J.

    2009-01-01

    In adult patients with congenital adrenal hyperplasia (CAH), the presence of testicular adrenal rest tumours (TART) is an important complication leading to gonadal dysfunction and infertility. These tumours can be already found in childhood and puberty. In this paper, we review the embryological, histological, biochemical, and clinical features of TART and discuss treatment options. PMID:19956703

  9. Testicular Adrenal Rest Tumours in Congenital Adrenal Hyperplasia

    Directory of Open Access Journals (Sweden)

    Otten BJ

    2009-01-01

    Full Text Available In adult patients with congenital adrenal hyperplasia (CAH, the presence of testicular adrenal rest tumours (TART is an important complication leading to gonadal dysfunction and infertility. These tumours can be already found in childhood and puberty. In this paper, we review the embryological, histological, biochemical, and clinical features of TART and discuss treatment options.

  10. Fertility in men with testicular germ cell tumors.

    NARCIS (Netherlands)

    Spermon, J.R.; Kiemeney, L.A.L.M.; Meuleman, E.J.H.; Ramos, L.; Wetzels, A.M.M.; Witjes, J.A.

    2003-01-01

    OBJECTIVE: To assess the prevalence of fertility or infertility in men before and after treatment for unilateral testicular cancer. The results were compared with the lifetime prevalence of infertility in the general population (20%-28%). DESIGN: Survey. SETTINGS: University referral center for

  11. The effect of unilateral vasectomy on testosterone and testicular ...

    African Journals Online (AJOL)

    Background: The effects of vasectomy on spermatogenesis and reproductive parameters are recognized to be speciedependent with marked differences in levels of perturbations observed. Objectives: To assess the impact of unilateral vasectomy on testosterone level and other testicular parameters in the male African giant ...

  12. Transverse testicular ectopia with persistent Mullerian duct syndrome

    African Journals Online (AJOL)

    anomaly and understanding of the embryological process of testicular descent and its associated aberration are prerequisites for the proper management of this rare anomaly. These findings highlight the importance of diagnostic laparoscopy in all patients presented with nonpalpable testes. Ann Pediatr Surg 8:62–63.

  13. A survey of etiologic hypotheses among testicular cancer researchers

    DEFF Research Database (Denmark)

    Stang, A; Trabert, B; Rusner, C

    2015-01-01

    Basic research results can provide new ideas and hypotheses to be examined in epidemiological studies. We conducted a survey among testicular cancer researchers on hypotheses concerning the etiology of this malignancy. All researchers on the mailing list of Copenhagen Testis Cancer Workshops and ...... etiologic hypotheses that include factors related to endocrine disruption, DNA damage, inflammation, and nutrition during pregnancy. The survey results may stimulate a multidisciplinary discussion about new etiologic hypotheses of testicular cancer.......Basic research results can provide new ideas and hypotheses to be examined in epidemiological studies. We conducted a survey among testicular cancer researchers on hypotheses concerning the etiology of this malignancy. All researchers on the mailing list of Copenhagen Testis Cancer Workshops...... and corresponding authors of PubMed-indexed articles identified by the search term 'testicular cancer' and published within 10 years (in total 2750 recipients) were invited to respond to an e-mail-based survey. Participants of the 8th Copenhagen Testis Cancer Workshop in May 2014 were subsequently asked to rate...

  14. Neonatal testicular tumour presenting as an acute scrotum

    African Journals Online (AJOL)

    Ann Pediatr Surg 8:19–21 c. 2012 Annals of Pediatric Surgery. Annals of Pediatric Surgery 2012, 8:19–21. Keywords: acute scrotum, granulosa cell tumour, neonatal, testicular tumour .... that trisomy 12 may be widespread (75%) in paediatric granulosa stromal cell tumours and can be identified by fluorescence in-situ ...

  15. Testicular cancer: Management challenges in an African developing ...

    African Journals Online (AJOL)

    Advances in oncology have greatly improved the prognosis of testicular cancer. In developing countries, however, the outcome is still ... Treatment consisted of radical orchidectomy in all patients and cisplatin-based chemotherapy and radiotherapy in some patients. One patient with a tumour in an intra-abdominal testis ...

  16. Aluminium-induced Liver and Testicular Damage: Effects of ...

    African Journals Online (AJOL)

    Background: Aluminium is believed to be non toxic and easily eliminated from the body, a belief which encourages its use in daily life. However, several studies have reported its hepatotoxicity and testicular derangement in animals and humans. Objective: The protective potential of Piliostigma thonningii (250mg/kg of body ...

  17. Testicular dysgenesis syndrome: foetal origin of adult reproductive problems

    DEFF Research Database (Denmark)

    Wohlfahrt-Veje, Christine; Main, Katharina M; Skakkebaek, Niels Erik

    2009-01-01

    is that maternal exposure to endocrine disrupting chemicals may contribute to the pathogenesis of TDS. Animal experiments have shown that all TDS symptoms, except testicular cancer, can be induced by foetal exposure to anti-androgenic chemicals. However, the cause of TDS in humans remains to be determined....

  18. Testicular torsion on the Jos Plateau | Ugwu | West African Journal ...

    African Journals Online (AJOL)

    Testicular pain, retraction and scrotal swelling were the most common presenting complaints. The highest incidence 65%) occurred between November and February when the weather on the Jos plateau is coldest. At surgery, 34 (60%) patients were found to have associated congenital anomalies; in 22 (39%) patients, the ...

  19. Testicular microlithiasis in two boys with a chromosomal abnormality

    Directory of Open Access Journals (Sweden)

    Joery Goede

    2012-01-01

    Full Text Available A nine and 13-year-old boy, previously diagnosed with 18q syndrome and an 11q deletion, respectively were diagnosed with testicular microlithiasis (TM. Both cases demonstrate that TM occurs in patients with various chromosomal abnormalities

  20. (Dis)embodying gender and sexuality in testicular cancer.

    Science.gov (United States)

    Gurevich, Maria; Bishop, Scott; Bower, Jo; Malka, Monika; Nyhof-Young, Joyce

    2004-05-01

    Testicular cancer is the most common cancer in men aged 15-34. Although post-treatment prognosis is generally very good, the impact on sexuality, gender identity and fertility is amplified in this age group. A Canadian study of men with testicular cancer explores how men (re)consider questions of sexuality and gender post diagnosis and treatment. Semi-structured interviews with 40 men were analyzed using thematic decomposition, an analytic technique that combines discursive approaches with thematic analysis. The theoretical framework that guides this work relies on material discursive approaches. From an analytic stance, this perspective is concerned with a focus on the ways in which both subjectivity and the body are experienced and constituted in language. In particular, we are concerned with how these men interpret the (altered) male body as a locus of gender signification and gender disruption. Men in this study construct testicular cancer as alternately inhibiting and enhancing masculinity and sexuality. Disruption interpolates with potentiality. A discourse of precarious masculinity predominates these accounts, wherein the link between anatomy and masculinity is simultaneously asserted and disavowed. Constructions of anatomical essentialism (i.e., testicular integrity is equated with masculinity) are juxtaposed against construals of anatomical superfluousness (i.e., other sites of sexuality and male identity are emphasized as being more central).

  1. Relationship of testicular development with age, body weight ...

    African Journals Online (AJOL)

    Umut Cirit

    study has been conducted on the relation between testicular dimensions, spermatological characteristics and reproductive hormones of Kivircik rams. Recognition of the reproductive characteristics of a sheep breed is an essential starting point towards improving its productivity. Characterization of puberty and early sexual ...

  2. Honey Attenuates the Detrimental Effects of Nicotine on Testicular ...

    African Journals Online (AJOL)

    Epididymis sperm motility, viability, morphology and counts were estimated, serum Follicle Stimulating Hormone (FSH), Leutinizing Hormone (LH) and Testosterone were assayed using ELISA method and testicular histology were also assessed. Significant reduction in percentage sperm motility, viability, morphology and ...

  3. Testicular volume of healthy term neonates: Determination of ...

    African Journals Online (AJOL)

    Background: Testicular volume (TV) in neonates has some predictive values of clinical importance. Establishing the normal values of TV among term newborn males of every population is important as differences exist among different populations. Much is not known on TV among Igbo newborns. Aim: The aim of this study ...

  4. Skeletal and metabolic complications of testicular germ cell tumours.

    NARCIS (Netherlands)

    Willemse, Peter-Paul Michiel

    2014-01-01

    The studies described in this thesis were performed to investigate the short and long-term effects of chemotherapy on bone metabolism, fat metabolism and cardiovascular risk in testicular germ cell tumour (GCT) patients. We report a twofold increased prevalence of Metabolic Syndrome (MetS) in GCT

  5. DIAGNOSIS AND TREATMENT OF METACHRONOUS TESTICULAR CANCER: A CLINICAL CASE

    Directory of Open Access Journals (Sweden)

    A. S. Kalpinsky

    2013-01-01

    Full Text Available The incidence of bilateral testicular cancer is 5% in the total cohort of patients. Synchronous and metachronous testicular cancers are detected in 1-2 and 3% of cases, respectively. The standard treatment for testicular cancer is orchifuniculectomy and that for synchronous or metachronous cancer is organ-saving treatment, testectomy.The paper describes a clinical case of multiple primary metachronous testicular cancer. A 24-year-old patient underwent surgery (orchifuniculectomy and received 4 courses of BEP polychemotherapy for embryonal carcinoma of the left testicle at the P.A. Herzen Moscow Oncology Research Institute. After 55 months, a dynamic control examination diagnosed a 9-mm tumor in his single right testis that was thereafter resected. Its histological examination revealed embryonal carcinoma with solitary structures in the immature teratoma. Following 22 months, a control examination showed a recurrence of the disease, for which orchifuniculectomy of the single right testis, followed by hormone replacement therapy, was performed. The follow-up period was 80 months; no recurrence is now observed.

  6. Assessment of the effects of parenteral quinine on testicular ...

    African Journals Online (AJOL)

    Assessment of the effects of parenteral quinine on testicular histology and sperm parameters in wistar rats. JE Ataman, D Baxter-Grillo, AAA Osinubi. Abstract. Twenty-four week duration experiment was conducted with twenty-one male Wistar rats (200 - 250 g) to investigate the effects of quinine on the testis. The rats were ...

  7. Impact of organic hydroperoxides on rat testicular tissue and ...

    African Journals Online (AJOL)

    PRECIOUS

    2009-11-16

    Nov 16, 2009 ... lower epididymal sperm concentrations and motility. Superoxide dismutase and glutathione activities were also higher with an accompanying increase in lipid peroxidation in both testicular tissue and epididymal sperm. It can be concluded that in vivo intraperitoneal administration of organic hydroperoxides ...

  8. Impact of organic hydroperoxides on rat testicular tissue and ...

    African Journals Online (AJOL)

    The effects of hydroperoxides on testicular tissue and epididymal sperm were investigated. Male Wistar rats aged 10 - 12 weeks were randomly placed in groups and received standard rat chow and water ad libitum. Animals were injected intraperitoneally with saline (0.5 ml), t-butyl hydroperoxide (5, 10, 20 and 40 ìM; 0.5 ...

  9. Genetics Home Reference: 46,XX testicular disorder of sex development

    Science.gov (United States)

    ... area? Other Names for This Condition 46,XX sex reversal XX male syndrome XX sex reversal Related Information How are genetic conditions and genes ... 1 link) PubMed OMIM (1 link) 46,XX SEX REVERSAL 1 MedGen (1 link) 46,XX testicular disorder ...

  10. Semen characteristics and testicular biometry of Swiss albino mice ...

    African Journals Online (AJOL)

    Semen characteristics and testicular biometry of Swiss albino mice treated with water soluble fractions of spent engine oil. ... Abstract. Contamination of soil and underlying groundwater with spent engine oil from automobile workshops and garages has serious ecological problems affecting plants and animals.

  11. The effect of the melatonin on cryopreserved mouse testicular cells

    Directory of Open Access Journals (Sweden)

    Ghasem Saki

    2016-01-01

    Full Text Available Background: After improvements in various cancer treatments, life expectancy has been raised, but success in treatment causes loss of fertility in many of the survived young men. Cryopreservation of immature testicular tissues or cells introduced as the only way to preserve fertility. However, freezing has some harmful effects. Melatonin, a pineal gland hormone, has receptors in reproductive systems of different species. It is assumed that melatonin has free radical scavenger properties. Objective: The aim of this study was to evaluate the effects of melatonin on the cryopreserved testicular cells in mouse. Materials and Methods: Cells from 7- 10 days old NMRI mice testes were isolated using two step enzymatic digestion. The testicular cells were divided into two groups randomly and cryopreserved in two different freezing media with and without the addition of 100 μm melatonin. Finally, apoptosis of the cells was assayed by flow cytometry. Also, lactate dehydrogenase activity test was performed to assess the cytotoxicity. Results: The results of lactate dehydrogenase showed the nearly cytotoxic effect of melatonin. The results of flow cytometry showed increase in apoptosis in the cryopreserved cells in the media containing melatonin compared to the control group. Conclusion: The present study shows that melatonin has an apoptotic effect on cryopreserved mouse testicular cells.

  12. Testicular Morphometry and Sperm Quality of Rabbit Bucks Fed ...

    African Journals Online (AJOL)

    In developing nations, Moringa oleifera leaves are used for their nutritional and medicinal values and are rich in minerals and vitamins. Twenty rabbit bucks of mixed breeds, aged four to five weeks which weighed between 627.4g to 631.5g were used to evaluate the effect of Moringa oleifera leaf meal (MOLM) on testicular ...

  13. Testicular damage and farming environments - An integrative ecotoxicological link.

    Science.gov (United States)

    Parelho, Carolina; Bernardo, Filipe; Camarinho, Ricardo; Rodrigues, Armindo Santos; Garcia, Patrícia

    2016-07-01

    The exposure to agrochemicals during farming activities affects the function of the reproductive system, as revealed by the increasing worldwide evidence of male infertility amongst farmers. The main objective of this study was to untangle the link between agricultural practices and male reproductive impairment due to chronic exposure to xenobiotics (such as agrochemicals) in conventional and organic farming environments. For this purpose, male wild mice (Mus musculus) populations from sites representing two distinct farming practices (conventional and organic farming systems) were used as bioindicators for observable effects of testicular damage, namely on a set of histological and cellular parameters: (i) relative volumetric density of different spermatogenic cells and interstitial space; (ii) damage in the seminiferous tubules and (iii) apoptotic cells in the germinal epithelium. Results showed that mice from the conventional farming site bioaccumulated higher Pb hepatic loads, while mice from the organic farming site tend to bioaccumulate higher Cd hepatic loads. In general, for the analyzed testicular damage related parameters, mice from the organic farming site showed a similar performance than mice from the reference site. Mice from the conventional farming site stood out not only by underperforming in most studied parameters, while displaying an association between Pb hepatic loads and the observed testicular structural and functional disruption, but also by the increased stress index (Integrated Biomarker Response value). This study highlights the potential damaging effects of conventional farming practices on testicular structure and function, under natural conditions, raising concern about ensuing fertility risks for farmers. Copyright © 2016 Elsevier Ltd. All rights reserved.

  14. Breed Differences in Body Weight, Body and Testicular ...

    African Journals Online (AJOL)

    S) kids at weaning were used to compare body weight (BWT), body measurements (BM) and testicular measurements ™ of the two breeds. Efforts were also made to relate BWT with BM and TM in order to identify those that best predict BWT.

  15. Neonatal testicular tumour presenting as an acute scrotum

    African Journals Online (AJOL)

    hydrocele or testicular torsion. Abnormal karyotype has also been described. We describe an unusual case of a neonatal juvenile granulosa cell tumour presenting as an acutely swollen, tender testis, originally diagnosed as an acute hydrocele. We describe the management and review the literature pertaining to this rare ...

  16. Squamous Cell Carcinoma Arising in a Testicular Teratoma and ...

    African Journals Online (AJOL)

    Khan and Bagchi: Testicular squamous cell carcinoma with umbilical nodule tumors is usually localized in retroperitoneal lymph nodes including aortic, common iliac and caval nodes.[8]. In metastatic sites, the somatic-type malignancies have a poor prognosis. They do not respond to germ cell tumor chemotherapy; surgical ...

  17. Caracterización bioquímica de la enzima bifuncional dihidrofolato reductasa-timidilato sintasa de Leishmania (Viannia) y su evaluación como blanco molecular

    OpenAIRE

    Edison Osorio; Carolina Aguilera; Nelson Naranjo; Marcel Marin; Carlos Muskus

    2013-01-01

    Introducción. La dihidrofolato reductasa (DHFR) se ha utilizado como blanco molecular en tratamientos antibacterianos, anticancerígenos y antipalúdicos. También, actúa como blanco molecular en Leishmania; sin embargo, no existen reportes de la enzima bifuncional en especies de Leishmania (Viannia). Materiales y métodos. Se ha aislado y expresado en Escherichia coli el gen que codifica para la enzima bifuncional DHFR y la timidilato-sintasa (TS) de Leishmania braziliensis. La enzima recomb...

  18. Seasonal preponderance in testicular torsion: is it a myth?

    Science.gov (United States)

    Karakan, Tolga; Bagcioglu, Murat; Özcan, Serkan; Telli, Onur; Turgut, Hasan; Özkan, Mehmet; Germiyanoglu, Cancon

    2015-12-01

    In this study, we aimed to investigate the relation of testicular torsion and weather conditions, and to report results from Turkey, a country located between temperate and sub-tropical climate zones. A total of 56 patients that had surgery with the diagnosis of testicular torsion in Ankara Education and Research Hospital Urology Clinic between 2005 and 2014 were included in the study. Age of the patient, side of torsion, date and time at onset of pain, scrotal exploration time, ischemia duration, degree of cord torsion, the surgical procedure performed, and scrotal Doppler ultrasound (USG) findings at the time of diagnosis and 1 month after surgery were retrospectively analyzed. The web archives of Turkish Republic Meteorology General Directorate was used to determine the seasonal and mean temperatures at the time of diagnosis. The data were analyzed with SPSS v. 16 statistical package program using Chi-square, Mann- Whitney U and Wilcoxon tests. The mean age of 56 males included in the study was 18.88 ± 0.73 years. Right testicular torsion was seen in 23, and left testicular torsion was seen in 33 patients. Testicular arterial flow was absent in 37, arterial flow was moderately decreased in 12, and significantly decreased in 7 patients on Doppler USG. Detorsion procedure was performed in 46 patients while 10 patients had orchiectomy. Nine patients were admitted in summer, 14 in fall, 15 in winter, and 18 in spring. The mean air temperature at the time of admittance was 9.31 ± 1.05 °C. The prevalence of testicular torsion was not found different among the seasons (p=0.39). The analysis of air temperature at the time of admittance of the patients revealed that it was below 15 °C in 40 patients while it was above 15 °C in 16 patients, with a significant difference in between (p=0.002). The prevalence of testicular torsion did not change in relation with the seasons. However, it was determined that its prevalence was directly proportional to the air temperature

  19. Testicular Descend, How and Why: A Review Article

    Directory of Open Access Journals (Sweden)

    Sujan Narayan Agrawal

    2017-08-01

    Full Text Available Background: The testis develops in the dorsal abdominal wall, and then descends to scrotum. The development begins as early as 6th week of intrauterine life and is completed by fifth month of intrauterine life. The testis may get arrested during its descent from dorsal abdominal wall to scrotum. The anomalies of descent includes cryptorchism (and its variant like anarchism, monarchism or partially descended testis, ectopic testis, persistent processus vaginalis and encysted hydrocoel of spermatic cord etc. Cryptorchism is usually diagnosed during the new born examination. The recognition of this condition, identification of associated syndromes, proper diagnostic evaluation and timely treatment by surgical urologist is important to prevent adverse consequences like sterility, congenital hernia & hydrocoel, testicular carcinoma etc. Objectives: the objective of this review is to study the role of gubernaculum in the testicular migration process. Material & Method: We performed a descriptive review of the literature about the role of the gubernaculum in testicular migration during the human fetal life. This article provides an overview of role of gubernaculum and other factors responsible for gonadal migration. Results: In the first phase of testicular migration the gubernaculum enlarges to hold the testis near groin and in the second phase the gubernaculum migrates across the pubic region to reach the scrotum. The proximal end of gubernaculum is attached to the testis and epididymis. The lower end reaches to bottom of scrotum. A failure in the proper functioning of gubernaculum causes cryptorchism. Rarely male gonads may deviate from main pathway due to presence of many tails of distal gubernaculum, and it may give rise to ectopic testis. The processus vaginalis usually closes by birth. If it remains patent, it leads to congenital hernia, hydrocoel, encysted hydrocoel etc. Conclusion: the gubernaculum presents a significant structure during

  20. Adverse testicular effects of Botox® in mature rats.

    Science.gov (United States)

    Breikaa, Randa M; Mosli, Hisham A; Nagy, Ayman A; Abdel-Naim, Ashraf B

    2014-03-01

    Botox® injections are taking a consistently increasing place in urology. Intracremasteric injections, particularly, have been applied for cryptorchidism and painful testicular spasms. Studies outlining their safety for this use are, however, scanty. Thus, the present study aimed at evaluating possible testicular toxicity of Botox® injections and their effect on male fertility. Mature rats were given intracremasteric Botox® injections (10, 20 and 40 U/kg) three times in a two-week interval. Changes in body and testes weights were examined and gonadosomatic index compared to control group. Semen quality, sperm parameters, fructose, protein, cholesterol and triglycerides contents were assessed. Effects on normal testicular function were investigated by measuring testosterone levels and changes in enzyme activities (lactate dehydrogenase-X and acid phosphatase). To draw a complete picture, changes in oxidative and inflammatory states were examined, in addition to the extent of connective tissue deposition between seminiferous tubules. In an attempt to have more accurate information about possible spermatotoxic effects of Botox®, flowcytometric analysis and histopathological examination were carried out. Botox®-injected rats showed altered testicular physiology and function. Seminiferous tubules were separated by dense fibers, especially with the highest dose. Flowcytometric analysis showed a decrease in mature sperms and histopathology confirmed the findings. The oxidative state was, however, comparable to control group. This study is the first to show that intracremasteric injections of Botox® induce adverse testicular effects evidenced by inhibited spermatogenesis and initiation of histopathological changes. In conclusion, decreased fertility may be a serious problem Botox® injections could cause. Copyright © 2014 Elsevier Inc. All rights reserved.

  1. Effects of ozone therapy and taurine on ischemia/reperfusion-induced testicular injury in a rat testicular torsion model.

    Science.gov (United States)

    Aydos, Tolga Reşat; Başar, Mehmet Murad; Kul, Oğuz; Atmaca, Hasan Tarık; Uzunalıoğlu, Tuba; Kisa, Üçler; Efe, Oğuzhan Ekin

    2014-01-01

    To investigate the effect of ozone and/or taurine treatment comparatively on testicular damage due to ischemia/ reperfusion (I/R) injury in an experimental torsion model in rats. Adult Wistar rats with and without torsion/detorsion were used. In order to monitor the effect of ozone and/or taurine treatment on testicular damage due to I/R injury, following histopathological investigation apoptotic indexes were scored by TUNEL method. Moreover, tumor necrosis factor receptor 1 (TNFR1), caspase 3, caspase 8, endothelial nitric oxide synthase (eNOS), tumor necrosis factor alpha (TNFα), and cytochrome C immunostainings were performed and the levels of malondialdehyde, glutathione peroxidase, superoxide dismutase, catalase, total sulfhydryl, and nitric oxide were determined in the testicular tissue. Intraperitoneal ozone and/or taurine treatment prevented both histopathological damage and increase in the apoptotic index. Torsion did not exert an effect on the levels of TNFα and cytochrome C. Ozone and/or taurine treatment prevented increases in TNFR1, caspase 3, and caspase 8. The level of oxidative stress markers was unchanged. The increases in NO level and eNOS expression were prevented by ozone and/or taurine treatment in I/R groups. Using ozone therapy and/or taurine before reperfusion may be a solution for germ cell degeneration resulting from testicular torsion and related infertility.

  2. Testicular resistive index determined by Doppler ultrasonography in men with spinal cord injury - a case series.

    Science.gov (United States)

    Krebs, J; Göcking, K; Pannek, J

    2015-09-01

    In this case series, the testicular resistive index was determined in men with spinal cord injury. In ten men participating in our fertility programme, the peak systolic and end-diastolic velocity of centripetal testicular arteries was measured in triplicates by Doppler ultrasonography to calculate the testicular resistive index. Furthermore, the right and left testicular volume was determined by ultrasonography, blood samples were obtained for hormonal evaluation, and sperm analysis was performed according to the WHO guidelines. The median testicular resistive index measured 0.69 and was significantly (P < 0.001) greater than the reported cut-off value of 0.6. The spermiograms were characterised by normal sperm count but decreased sperm motility and plasma membrane integrity. The median right and left testicular volume was significantly (P < 0.01) smaller compared to the volumes measured in able-bodied adult males without scrotal pathology and measured 8.4 ml and 7.2 ml respectively. There was a significant (P = 0.005) correlation (rs  = 0.81) between testicular resistive index and sperm concentration. However, no correlations were observed between testicular resistive index and other variables. The testicular resistive index in men with spinal cord injury was significantly greater than 0.6. Measuring the testicular resistive index may represent a useful additional parameter in the assessment of infertility in spinal cord-injured men. © 2014 Blackwell Verlag GmbH.

  3. Testicular torsion and weather conditions: analysis of 21,289 cases in Brazil

    Directory of Open Access Journals (Sweden)

    Fernando Korkes

    2012-04-01

    Full Text Available PURPOSE: The hypothesis of association between testicular torsion and hyperactive cremasteric reflex, worsened by cold weather, has not been proved. Thirteen studies in the literature evaluated this issue, with inconclusive results. The aim of the present study was to evaluate the seasonality of testicular torsion in a large subset of patients surgically treated in Brazil, and additionally to estimate the incidence of testicular torsion. MATERIALS AND METHODS: Brazilian Public Health System Database was assessed from 1992-2010 to evaluate hospital admissions associated with treatment of testicular torsion. Average monthly temperature between 1992-2010 was calculated for each region. RESULTS: We identified 21,289 hospital admissions for treatment of testicular torsion. There was a higher number of testicular torsions during colder months (p = 0.002. To estimate the incidence of testicular torsion, we have related our findings to data from the last Brazilian census (2010. In 2010, testicular torsion occurred in 1.4:100,000 men in Brazil. CONCLUSIONS:Testicular torsion occurred at an annual incidence of approximately 1.4:100,000 men in Brazil in 2010. Seasonal variations do occur, with a significant increase of events during winter. Our findings support the theory of etiological role of cold weather to the occurrence of testicular torsion. Strategies to prevent these events can be based on these findings.

  4. Aetiology of testicular cancer: association with congenital abnormalities, age at puberty, infertility, and exercise. United Kingdom Testicular Cancer Study Group.

    Science.gov (United States)

    1994-05-28

    To determine the risk of testicular cancer associated with undescended testis, inguinal hernia, age at puberty, marital status, infertility, vasectomy, and amount of exercise. A population based case-control study with a questionnaire administered by an interviewer and with relevant supplementary data extracted from general practitioners' notes. Nine health regions within England and Wales. 794 men, aged 15-49 years, with a testicular germ cell tumour diagnosed between 1 January 1984 and 1 January 1987; each had an age matched (within one year) control selected from the list of their general practitioner. There was a significant association of testicular cancer with undescended testis (odds ratio 3.82; 95% confidence interval 2.24 to 6.52) and inguinal hernia (1.91; 1.12 to 3.23). The excess risk associated with undescended testis was eliminated in men who had had an orchidopexy before the age of 10 years. There were positive associations with early age at voice breaking, early age at starting to shave, and infertility. There was a significant association with a sedentary lifestyle and a moderate protective effect of exercise. There was no association with vasectomy. This study confirms previous reports that developmental urogenital abnormalities result in an increased risk of testicular cancer. The trend to perform orchidopexy at younger ages may reduce the risk associated with undescended testis. The increased risks associated with early age at puberty and low amounts of exercise may be related to effects of exposure to endogenous hormones. Changes in both of these factors may partly contribute to the increasing rates of testicular cancer observed in the past few decades.

  5. Alterations in muscular enzymes of horses competing long-distance endurance rides under tropical climate Alterações em enzimas musculares de cavalos em competições de enduro de longa distância em clima tropical

    Directory of Open Access Journals (Sweden)

    A.R. Teixeira-Neto

    2008-06-01

    Full Text Available This study tried to monitor the alterations of muscle enzymes activity - creatinokinase (CK, lactate dehydrogenase (LDH, and aspartate aminotransferase (AST - in a group of horses that participated of 70 and 100km distance rides in five competitions of an annual endurance championship under tropical climate. Pre ride levels (U/l were 245.13±9.84 for CK, 496.61±14.76 for LDH, and 328.95±8.65 for AST. When compared to these levels, the results revealed a significant decrease in all enzymes activities in the first moment of the rides. Peak levels, significantly different, were reached, immediately after rides by CK (413.591±50.75; 24 hours post rides by LDH (628.61±33.30; and 48 hours after rides by AST (389.89±16.96. Monitoring of recovery period revealed different behavior among enzymes activities with CK values returning to pre ride values (279.61±23.05 24 hours post rides, while LDH and AST values returned to pre ride values (505.25±33.78 and 359.35±24.90, respectively 72 hours post rides. These data revealed different alterations in concentration of muscular enzymes in endurance horses directly related to the duration of the effort.Estudaram-se as alterações de atividade das enzimas musculares creatino quinase (CK, lactato desidrogenase (LDH e aspartato aminotransferase (AST em um grupo de cavalos que utilizados em provas de enduro de 70 e 100km de distância, em cinco competições. Os valores (U/l basais (antes da largada foram 245,13±9,84 para CK, 496,61±14,76 para LDH e 328,95±8,65 para AST. Todas as atividades das enzimas decresceram no primeiro momento das provas (~30km. Valores de pico, significativamente diferentes, foram alcançados para CK (413,59±50,75 imediatamente após 70km de distância; 24 horas após para LDH (628,61±33,30; e 48 horas após as provas para AST (389,89±16,96. A monitoração do período de recuperação revelou diferente comportamento entre as concentrações enzimáticas com CK retornando aos

  6. Screening of filamentous fungi for production of enzymes of biotechnological interest Seleção de fungos filamentosos para a produção de enzimas de interesse biotecnológico

    Directory of Open Access Journals (Sweden)

    Luis Henrique S. Guimarães

    2006-12-01

    examinados quanto à sua capacidade de produzir xilanase, glicose-oxidase, fosfatase alcalina, fosfatase ácida, fitase, pectinase e amilase. Entre estes, vinte e três isolados exibiram potencial enzimático. Xilanases produzidas por dois destes isolados (Aspergillus caespitosus e A. phoenicis mostraram bons resultados no biobranqueamento da polpa de celulose. Entre dezessete isolados, pelo menos três produziram altos níveis de glicose oxidase, sendo Rhizopus stolonifer e Aspergillus. versicolor os melhores produtores. Aspergillus caespitosus, Mucor rouxii e nove outros ainda não identificados foram os melhores produtores de fosfatases em fermentação submersa. Pectinase foi produzida preferencialmente por IF II e C-8 seguida por Rhizopus stolonifer. Níveis significantes de amilases foram produzidos por Paecilomyces variotii e Aspergillus phoenicis. Um notável produtor de diversas enzimas foi Rhizopus microsporus var. rhizopodiformis, que produziu altos níveis de amilase, fosfatase alcalina e ácida e pectinase. Algumas estruturas morfológicas deste fungo estão sendo ilustradas por microscopia de luz e microscopia eletrônica de varredura. Esse estudo contribui para catalogar fungos isolados do estado de São Paulo e fornece informações adicionais para pesquisas futuras sobre o potencial industrial destes microrganismos produtores de enzima e eventualmente também metabólitos secundários com atividade antimicrobiana e antiparasitária.

  7. Mice plasma fibrinogen consumption by thrombin-like enzyme present in rattlesnake venom from the North-East region of Argentina Consumo de fibrinógeno plasmático en ratones por acción de enzima con actividad trombínica presente en el veneno de cascabel del nordeste argentino

    Directory of Open Access Journals (Sweden)

    Silvana L. Maruñak

    2004-12-01

    Full Text Available Due to variability of venom components from the same species of snakes that inhabit different regions, particular properties of the venom of Crotalus durissus terrificus that inhabits the North-East of Argentina were studied. Gyroxin, a thrombin-like enzyme, was isolated from this venom by gel filtration and affinity chromatography, it was found to be homogeneous according to SDS-PAGE, with a molecular weight of 33 kDa. "Gyroxin syndrome" in mice was tested and it showed changes in the animal behavior, confirming that the isolated thrombin-like enzyme is gyroxin. Effects of this enzyme and the crude venom on mice plasmatic fibrinogen levels were determined. The mice plasma fibrinogen decreased rapidly until incoagulability during the first hour after thrombin-Iike enzyme injection, then reaching its normal level 10 hours after injection; whereas crude venom resulted in a 60% decrease of the mice plasma fibrinogen, reaching its normal level after the same period of time. After 1 hour of gyroxin inoculation, intravascular coagulation was observed in histological cuttings of lung, cardiac muscle and liver. The isolated enzyme showed strong hydrolyzing activity on fibrinogen and fibrin in vitro, whereas the crude venom exhibited weak hydrolyzing activity on both substrates. It is probable that this very low activity is due to the low percentage of the enzyme in the crude venom. Decreasing of plasmatic fibrinogen levels may be due to either the coagulant or hydrolyzing actions of the enzyme.Teniendo en cuenta la variabilidad de los componentes del veneno de serpientes de una misma especie que habitan regiones diferentes, se decidió estudiar las propiedades particulares del veneno de Crotalus durissus terrificus que habita el nordeste de Argentina, Giroxina, una enzima con actividad trombínica, fue aislada del veneno por cromatografía de filtración por gel y de afinidad; se comprobó su homogeneidad y se determinó su peso molecular, 33 kDa, por

  8. An Uncommon Presentation of a Metachronous Testicular Primary Nonseminoma and Seminoma Separated by Two Decades and a Testicular Cancer Literature Review

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    Dennis Andrew Buck

    2017-09-01

    Full Text Available Introduction: Testicular cancer is the most common malignancy in men aged 15–40 years [Bols et al.: Philadelphia, Wolters Kluwer, Lippincott Williams & Wilkins, 2011]. Its incidence comprises 0.8% of all male cancers worldwide, with a mortality rate of 0.1%. The incidence has nearly doubled from 1975 to 2007 leading to the concern of environmental causes [Thomas: Am J Epidemiol 2013; 178: 1240–1245]. Testicular cancer presents as a painless testicular mass without transillumination. Testicular cancer is subcategorized under germ cell testicular cancer or sex cord-stromal tumors. Of the germ cell tumors, approximately 90% originate in the testis, with the other 10% being extragonadal [Bols et al.: Philadelphia, Wolters Kluwer, Lippincott Williams & Wilkins, 2011]. Typically, if a patient presents with a testicular mass and is 50 years old or older, the diagnosis of a primary lymphoma is considered until proven otherwise [Bols et al.: Philadelphia, Wolters Kluwer, Lippincott Williams & Wilkins, 2011]. Germ cell testicular cancer is further divided into the subtypes of seminomatous and nonseminomatous; each presents with a unique histology and differing treatment implications. Discussion: Given the uniqueness of our patient’s metachronous second testicular primary, we sought to compare our case findings to available historic publications. We sought to address the issues of the incidence of a second primary testicular malignancy with regard to varying histology, age of incidence, and timing of a second primary testicular cancer, the presence of bowel involvement, and finally a brief discussion of testosterone replacement therapy. Conclusion: A review of our case presents several unique factors. The above varying literature has shown our patient to have met the odds of a contralateral testicular primary development in that he had a nonseminomatous primary, followed by a second testicular primary seminoma. Our patient exceeded the 15-year

  9. An Uncommon Presentation of a Metachronous Testicular Primary Nonseminoma and Seminoma Separated by Two Decades and a Testicular Cancer Literature Review.

    Science.gov (United States)

    Buck, Dennis Andrew; Smith, Tristan Dean; Montana, Wilbur Nelson

    2017-01-01

    Testicular cancer is the most common malignancy in men aged 15-40 years [Bols et al.: Philadelphia, Wolters Kluwer, Lippincott Williams & Wilkins, 2011]. Its incidence comprises 0.8% of all male cancers worldwide, with a mortality rate of 0.1%. The incidence has nearly doubled from 1975 to 2007 leading to the concern of environmental causes [Thomas: Am J Epidemiol 2013; 178: 1240-1245]. Testicular cancer presents as a painless testicular mass without transillumination. Testicular cancer is subcategorized under germ cell testicular cancer or sex cord-stromal tumors. Of the germ cell tumors, approximately 90% originate in the testis, with the other 10% being extragonadal [Bols et al.: Philadelphia, Wolters Kluwer, Lippincott Williams & Wilkins, 2011]. Typically, if a patient presents with a testicular mass and is 50 years old or older, the diagnosis of a primary lymphoma is considered until proven otherwise [Bols et al.: Philadelphia, Wolters Kluwer, Lippincott Williams & Wilkins, 2011]. Germ cell testicular cancer is further divided into the subtypes of seminomatous and nonseminomatous; each presents with a unique histology and differing treatment implications. Given the uniqueness of our patient's metachronous second testicular primary, we sought to compare our case findings to available historic publications. We sought to address the issues of the incidence of a second primary testicular malignancy with regard to varying histology, age of incidence, and timing of a second primary testicular cancer, the presence of bowel involvement, and finally a brief discussion of testosterone replacement therapy. A review of our case presents several unique factors. The above varying literature has shown our patient to have met the odds of a contralateral testicular primary development in that he had a nonseminomatous primary, followed by a second testicular primary seminoma. Our patient exceeded the 15-year cumulative risk of contralateral metachronous testicular cancer of 1

  10. Association between testicular dysgenesis syndrome (TDS) and testicular neoplasia: evidence from 20 adult patients with signs of maldevelopment of the testis

    DEFF Research Database (Denmark)

    Skakkebæk, Niels Erik; Holm, Mette; Hoei-Hansen, Christina

    2003-01-01

    Based on a well established association between testicular cancer and undescended testis and more recent publications on epidemiological links between these disorders and male infertility, we proposed the existence of a testicular dysgenesis syndrome (TDS). In most cases TDS presents with impaired...... testicular biopsies derived from patients with infertility, hypospadias and undescended testis. We searched for histological signs of testicular dysgenesis: microliths, Sertoli-cell-only tubules, immature seminiferous tubules with undifferentiated Sertoli cells, and tubules containing carcinoma in situ (CIS...... of semen sampling and testicular histology. In conclusion, our study of 20 patients with various reproductive abnormalities provided evidence that TDS is a real clinical entity. We speculate that most of these abnormalities are caused by adverse environmental effects rather than specific gene mutations....

  11. Actividad Circadiana de la enzima succinato deshidrogenasa en Neurospora crassa Circadian rhythm in succinate dehydrogenase activity in Neurospora crassa

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    Álvarez Barón Claudia Patricia

    2004-12-01

    Full Text Available Neurospora crassa es un modelo de ritmicidad circadiana ampliamente estudiado. El metabolismo de este hongo es controlado por múltiples factores que incluyen el desarrollo, las características del medio y el reloj circadiano. El estudio de la regulación circadiana del metabolismo en este hongo podría estar enmascarado por el uso de medios restrictivos que suprimen su crecimiento y desarrollo. En el presente trabajo se estudió la variación en el tiempo de la actividad de la enzima Succinato Deshidrogenasa durante 24 horas en medio completo sin restricción para la conidiación en cepas de Neurospora
    crassa rítmica y arrítmica. Se encontró una variación circadiana en la actividad enzimática de la cepa rítmica con valores altos en las horas correspondientes a la noche y bajos durante el día. Este hallazgo resalta la importancia de profundizar en el estudio del control circadiano sobre el metabolismo de este hongo, con base en la existencia de vías de regulación múltiples sobre las enzimas del metabolismo y de mecanismos post-transcripcionales y transcripcionales de control circadiano.Neurospora crassa is a widely studied model of circadian rhythmicity. In this fungus, metabolism is controlled by multiple factors which include development, medium characteristics and the circadian clock. The study of the circadian control of metabolism in this fungus could be masked by the use of restrictive media that inhibit growth and development. In this report, the presence of a circadian rhythm in the activity of the enzyme Succinate Dehydrogenase in Neurospora crassa is demonstrated. Rhythmic and arrhythmic Neurospora strains were grown in complete medium without conidiation restriction. A circadian change in the enzymatic activity was found with high values in hours corresponding to the night and a low level during the day. This finding highlights the importance of deeper studies in the circadian control of metabolism in this fungus

  12. Testicular cancer mortality in the Americas, 1980-2003.

    Science.gov (United States)

    Bertuccio, Paola; Malvezzi, Matteo; Chatenoud, Liliane; Bosetti, Cristina; Negri, Eva; Levi, Fabio; La Vecchia, Carlo

    2007-02-15

    Testicular cancer is generally curable if appropriate treatment is given. Data and statistics on testicular cancer mortality over the last decades are available from the US and Canada, but are more difficult to find, in a standard and comparable format, for Central and South American countries. The objective of the study was to compare death rates and trends over the 1980-2003 period in all the American countries that provide data. Overall and 20 to 44 years age-standardized (world population) mortality rates from testicular cancer, derived from the World Health Organization (WHO) database, are presented for the most recent available calendar years in 10 American countries. Trends in mortality for selected countries of the Americas are also given over the period 1980-2003. In the early 1980s the highest testicular cancer mortality rates were observed in Chile (1.7/100,000 at all ages, 3.6/100,000 at 20-44 years) and Argentina (0.9/100,000 at all ages, 1.7/100,000 at 20-44 years), as compared with 0.4/100,000 for all ages and 0.6/100,000 at 20 to 44 years in Canada, and 0.3/100,000 for all ages and 0.7/100,000 at 20 to 44 years in the US. In 2001-2003, testicular cancer mortality had fallen to 0.2/100,000 in men aged 20 to 44 years in Canada, and to 0.4/100,000 in the US. Conversely, rates were still 1.6/100,000 in Argentina, 2.2/100,000 in Chile and 1.2/100,000 in Mexico, and were around 0.5-0.6/100,000 in most other Latin American countries that provide data. Mortality from testicular cancer in (young) men remains exceedingly high in most Latin American countries. Urgent intervention is required to provide treatment (essentially modern integrated platinum-based chemotherapy) for this largely curable neoplasm in young men.

  13. Testicular sparing surgery in small testis masses: A multinstitutional experience

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    Andrea B. Galosi

    2016-12-01

    Full Text Available Introduction: The incidence of benign testicular tumors is increasing in particular in small lesion incidentally found at scrotal ultrasonography. Primary aim of this study was to perform radical surgery in malignant tumor. Secondary aim was to verify the efficacy of the diagnostic-therapeutic pathway recently adopted in management of small masses with testis sparing surgery in benign lesions. Materials and methods: In this multicenter study, we reviewed all patients with single testis lesion less than 15 mm at ultrasound as main diameter. We applied the diagnostic-therapeutic pathway described by Sbrollini et al. (Arch Ital Urol Androl 2014; 86:397 which comprises: 1 testicular tumor markers, 2 repeated scrotal ultrasound at the tertiary center, 3 surgical exploration with inguinal approach, intraoperative ultrasound, and intraoperative pathological examination. Definitive histology was reviewed by a dedicated uro-pathologist. Results: Twenty-eight patients completed this clinical flowchart. The mean lesion size was 9.3 mm (range 2.5-15. Testicular tumor markers were normal except in a case. Intraoperative ultrasound was necessary in 8/28 cases. We treated 11/28 (39.3% with immediate radical orchiectomy and 17/28 (60.7% with testis-sparing surgery. Definitive pathological results were: malignant tumor in 6 cases (seminoma, benign tumor in 10 cases (5 Leydig tumors, 2 Sertoli tumors, 1 epidermoid cyst, 1 adenomatoid tumor, 1 angiofibroma, benign disease in 11 (8 inflammation with haemorragic infiltration, 2 tubular atrophy, 1 fibrosis, and normal parenchyma in 1 case. We observed a good concordance between frozen section examination and definitive histology. Any malignant tumor was treated conservatively. Any delayed orchiectomy was necessary based on definitive histology. Conclusions: The incidence of benign lesions in 60% of small testis lesions with normal tumor markers makes orchiectomy an overtreatment. Testicular sparing surgery of single

  14. Fechamento parcial do anel inguinal externo em eqüinos: avaliação pós-operatória e influência na morfologia testicular Partial closure of the equine external inguinal ring: post-operatory evaluation and influence on testicular morphology

    Directory of Open Access Journals (Sweden)

    J.J.M. Rio Tinto

    2004-12-01

    Full Text Available Avaliou-se a influência do fechamento parcial do anel inguinal externo (AIE na morfologia testicular e caracterizaram-se as alterações pós-operatórias decorrentes de sua utilização em seis eqüinos machos. Sob anestesia geral, criou-se um acesso à cavidade vaginal que foi seguido de síntese da túnica vaginal parietal e sutura do AIE ipsilateral em aproximadamente 75% de seu diâmetro (antímero suturado. No antímero contralateral foi realizado procedimento cirúrgico semelhante, mas a sutura do anel inguinal foi removida imediatamente após sua aplicação (antímero controle. No pós-operatório, os animais foram examinados diariamente por quatro semanas. O trauma cirúrgico acarretou degeneração testicular no período pós-operatório e o acesso à cavidade vaginal predispôs à formação de aderências testiculares. O grau de degeneração testicular foi equivalente nos dois antímeros, suturado e controle, e nenhum dos testículos apresentou degeneração. O procedimento mostrou ser uma alternativa viável para o tratamento de hérnias inguinais quando se deseja evitar a orquiectomia.In order to evaluate the influence of parcial closure of the external inguinal ring on testicular morphology and to characterize the local post-operatory changes, six adult horses were submitted to surgery under general anesthesia. The vaginal cavity was opened and approximately 75% of the external inguinal ring was sutured (sutured side. The same procedure was performed on the contralateral side, and the sutures of the external inguinal ring were immediately removed (sham side. The horses were examined daily for four weeks. The surgical procedure induced testicular degeneration and adhesion of the testis to the parietal vaginal tunic. Similar levels of testicular degeneration were detected in both sides (sutured and sham, and none of the testes evaluated had severe degeneration. This procedure can be used for the treatment of inguinal herniation

  15. Reproductive hormones and metabolic syndrome in 24 testicular cancer survivors and their biological brothers

    DEFF Research Database (Denmark)

    Bandak, M.; Jorgensen, N.; Juul, A.

    2017-01-01

    of luteinizing hormone and follicle-stimulating hormone were elevated (p ≤ 0.001), while total testosterone, free testosterone, inhibin B and anti-Müllerian hormone were lower (p ≤ 0.001) in testicular cancer survivors than in their biological brothers. The prevalence of metabolic syndrome was similar and apart......Testicular cancer survivors have impaired gonadal function and increased risk of metabolic syndrome when compared to healthy controls. However, because of the fetal etiology of testicular cancer, familial unrelated healthy men might not be an optimal control group. The objective of this study...... was to clarify if testicular cancer survivors have impaired gonadal function and increased risk of metabolic syndrome when compared to their biological brothers. A cross-sectional study of testicular cancer survivors (ClinicalTrials.gov number, NCT02240966) was conducted between 2014 and 2016. Of 158 testicular...

  16. [Asynchronous Bilateral Testicular Infarction with Suspected Polyarteritis Nodosa : A Case Report].

    Science.gov (United States)

    Kurokawa, Masayuki; Naito, Sei; Ichiyanagi, Osamu; Suto, Aya; Kurota, Yuta; Sakurai, Toshihiko; Nishida, Hayato; Kawazoe, Hisashi; Kato, Tomoyuki; Nagaoka, Akira; Ito, Hiromi; Yamakawa, Mitsunori; Tsuchiya, Norihiko

    2016-12-01

    This report documents a case of asynchronous bilateral testicular infarction. The patient was a 42- year-old man who presented with left testicular pain and swelling. He had a past history of right idiopathic testicular infarction and underwent a right orchiectomy 6 years ago. He also had received treatment for 5 years for suspected polyarteritis nodosa (PAN). The left scrotal pain persisted for a week and left orchiectomy was performed. Pathological evaluations demonstrated a benign testis with testicular hemorrhage and chronic vasculopathy. There was no fibrinoid necrosis of medium-size vessel walls which characterizes PAN. In this report, we review the pathogenesis, risk of contralateral testicular infarction, and management of testicular infarction.

  17. INDUCCIÓN DE LA ACTIVIDAD DE LA ENZIMA FENILALANINA AMONIO LIASA EN CLAVEL (Dianthus caryophyllus L POR ELICITORES DEL HONGO Fusarium oxysporum f. sp. Dianthi raza 2

    Directory of Open Access Journals (Sweden)

    Harold Ardila

    2008-04-01

    Full Text Available Con el fin de evaluar el comportamiento a nivel del tallo de la enzima fenilalanina amonio liasa (PAL, por su nombre en inglés phenylalanine ammonia liase, durante la interacción clavel-Fusarium oxysporum f. sp. dianthi raza 2, se seleccionaron las condiciones para su extracción y cuantificación de la actividad. Para la extracción a partir de tallos y raíces se seleccionó un tratamiento previo del material vegetal con acetona y posterior extracción con buffer borato pH 8,8 con EDTA 2mMy -mercaptoetanol 18 mM. Para su cuantificación a nivel del tallo se debe realizar un ensayo discontinuo por 10 min, a 37 oC, pH 8,0 y a una concentración de sustrato de 35 mM. Adicionalmente se muestra mediante un ensayo in vivo el efecto que tiene, como inductor de esta enzima, la aplicación de un extracto crudo del patógeno. Los resultados observados indican que esta enzima se induce significativamente en tallos de claveles de la variedad tolerante “Kiss” durante el tratamiento por aspersión con el extracto crudo del patógeno, mientras que dicha inducción fue inexistente para la infección directamente con el patógeno. La inducción en esta variedad indica que en este extracto del patógeno se presentan elicitores potenciales para la inducción de esta enzima y por ende de la ruta fenilpropanoide.

  18. Caracterización de la enzima similar a trombina del veneno de Bothrops pictus "jergón de costa

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    Dan Vivas-Ruiz

    Full Text Available Objetivos. Realizar una caracterización bioquímica y molecular del principio coagulante del veneno de Bothrops pictus. Materiales y métodos. Se realizó la amplificación del gen a partir de cDNA, se analizó la homología de la secuencia nucleotídica y de la proteína deducida. Se procedió a purificar la enzima para los análisis de secuenciación directa N terminal de los primeros 20 aminoácidos y los ensayos de coagulación sobre plasma humano y fibrinógeno humano, por otro lado, se evaluó el patrón de corte del fibrinógeno por medio de PAGE SDS y la actividad defibrinogenante en roedores albinos (18-22 g. Se determinó el contenido de carbohidratos asociados, el efecto de inhibidores clásicos de proteasas y el efecto de iones bajo la forma de cloruros. Resultados. La enzima mostró homología en la estructura primaria con otras TLEs reportadas para la familia Viperidae, la dosis coagulante mínima (DCM sobre plasma y fibrinógeno humano fue de 18 y 6 µg respectivamente y su potencia coagulante fue de 131,1 NHI unidades de trombina. La enzima se mostró estable a condiciones fisiológicas y prescinde de iones para su actividad. Los carbohidratos asociados detectados fueron hexosas (25,76%, hexosaminas (13,1% y ácido siálico (0,76%. Los agentes fluoruro de fenil metil sulfonil floruro (PMSF ditiotreitol (DTT fueron los principales inhibidores de la actividad enzimática en tanto que la heparina no tuvo efecto inhibidor. Conclusiones. El principio coagulante del veneno de Bothrops pictus es una enzima similar a trombina

  19. Characteristics of symptomatic men with testicular microlithiasis:A Danish cross-sectional questionnaire study

    OpenAIRE

    Pedersen, M. R.; Møller, H; Rafaelsen, S R; Jørgensen, M M B; Osther, P J; Vedsted, P

    2017-01-01

    Testicular microlithiasis (TML) is an incidental finding at ultrasonography of the scrotum. A link between testicular microlithiasis and testicular cancer has been suggested. However, the majority of studies are retrospective using ultrasonography with minor data on health status and life style characteristics. Our objective was to investigate if lifestyle and health are associated with TML. In 2014, we conducted a self-administered questionnaire survey including 1538 men, who all due to test...

  20. Testicular germ cell tumors: Molecular genetic and clinicomorphological aspects

    Directory of Open Access Journals (Sweden)

    M. V. Nemtsova

    2015-01-01

    Full Text Available Testicular tumors are the most common form of solid cancer in young men. According to the 2004 WHO classification, testicular germ cell tumors (TGCT may present with different histological types. Embryonic cells of varying grade may be a source of TGCT and the occurrence of this type of tumors is directly related to the formation of a pool of male sex cells and gametogenesis. The paper gives information on mo- lecular stages for the process of formation of male sex cells in health, as well as ways of their impairments leading to TGCT. An investigation of the profiles of gene expression and the spectrum of molecular damages revealed genes responsible for a predisposition to the sporadic and hereditary forms of TGCT. The paper presents the current molecular genetic and clinicomorphological characteristics of TGCT. 

  1. Stomach Cancer Following Hodgkin Lymphoma, Testicular Cancer and Cervical Cancer

    DEFF Research Database (Denmark)

    Gilbert, Ethel S; Curtis, Rochelle E; Hauptmann, Michael

    2017-01-01

    To further understand the risk of stomach cancer after fractionated high-dose radiotherapy, we pooled individual-level data from three recent stomach cancer case-control studies. These studies were nested in cohorts of five-year survivors of first primary Hodgkin lymphoma (HL), testicular cancer...... (TC) or cervical cancer (CX) from seven countries. Detailed data were abstracted from patient records and radiation doses were reconstructed to the site of the stomach cancer for cases and to the corresponding sites for matched controls. Among 327 cases and 678 controls, mean doses to the stomach were...... 15.3 Gy, 24.7 Gy and 1.9 Gy, respectively, for Hodgkin lymphoma, testicular cancer and cervical cancer survivors, with an overall mean dose of 10.3 Gy. Risk increased with increasing radiation dose to the stomach cancer site (P

  2. Testicular germ cell tumors: Molecular genetic and clinicomorphological aspects

    Directory of Open Access Journals (Sweden)

    M. V. Nemtsova

    2015-03-01

    Full Text Available Testicular tumors are the most common form of solid cancer in young men. According to the 2004 WHO classification, testicular germ cell tumors (TGCT may present with different histological types. Embryonic cells of varying grade may be a source of TGCT and the occurrence of this type of tumors is directly related to the formation of a pool of male sex cells and gametogenesis. The paper gives information on mo- lecular stages for the process of formation of male sex cells in health, as well as ways of their impairments leading to TGCT. An investigation of the profiles of gene expression and the spectrum of molecular damages revealed genes responsible for a predisposition to the sporadic and hereditary forms of TGCT. The paper presents the current molecular genetic and clinicomorphological characteristics of TGCT. 

  3. Usefulness of gallium-67 citrate scanning in testicular seminoma

    Energy Technology Data Exchange (ETDEWEB)

    Willan, B.D.; Penney, H.; Castor, W.R.; McGowan, D.G.

    1987-10-01

    An analysis of 77 consecutive patients with a histologic diagnosis of seminoma testis, assessed and treated at the Cross Cancer Institute between 1977 and 1982, is presented. Ga-67 citrate was first used in the assessment of patients with malignant testicular tumors in 1973. Following three years of study that supported the observation of the gallium-avid nature of seminoma, gallium scans became routine in the initial staging assessment and were used also when recurrence was suspected. From 1977 through 1982, 72 patients with biopsy-proven seminoma testis were assessed initially for extent of disease by Ga-67 scanning. Comparison with intravenous pyelography and bipedal lymphography was possible for accuracy of tumor assessment. The scan sensitivity was 83%, and the specificity was 95%. During the same period, gallium was studied in nonseminomatous testicular tumors but the results were disappointing and its use was discontinued. The gallium-avid nature of seminoma testis may be useful in determining the extent of disease.

  4. Testicular function in a birth cohort of young men

    DEFF Research Database (Denmark)

    Hart, R J; Doherty, D A; McLachlan, R I

    2015-01-01

    sperm concentration (P = 0.012) and total sperm output (P = 0.030) and lower serum inhibin B levels (P = 0.046). Smoking, alcohol intake, herniorrhaphy, an epididymal cyst, medication and illicit drugs were not associated with any significant semen variables, testicular volume...... and obesity may impact on human testicular function, most common drug exposures and the presence of epididymal cysts appear to have no or minimal adverse impact. WHAT IS KNOWN ALREADY: The majority of previous attempts to develop valid reference populations for spermatogenesis have relied on potentially...... biased sources such as recruits from infertility clinics, self-selected volunteer sperm donors for research or artificial insemination or once-fertile men seeking vasectomy. It is well known that studies requiring semen analysis have low recruitment rates which consequently question their validity...

  5. Testicular fine needle aspiration cytology in adults and geriatric dogs

    OpenAIRE

    Sánchez R., Alfonso; Facultad de Recursos Naturales y Medicina Veterinaria, Escuela de Medicina Veterinaria, Universidad Santo Tomás, Viña del Mar; Díaz T., Daniela; Facultad de Recursos Naturales y Medicina Veterinaria, Escuela de Medicina Veterinaria, Universidad Santo Tomás, Viña del Mar; Melo A., Tamara; Facultad de Recursos Naturales y Medicina Veterinaria, Escuela de Medicina Veterinaria, Universidad Santo Tomás, Viña del Mar

    2017-01-01

    Con el propósito de describir y comparar la citología testicular en perros adultos y geriátricos se seleccionaron para orquiectomía 10 perros adultos (2-6 años) y 10 geriátricos (>8 años) sin patologías testiculares aparentes. Una vez recolectados los testículos se realizó punción y aspiración con aguja fina (AAF), obteniéndose cuatro muestras por perro. Las muestras fueron teñidas con May-Grünwald Giemsa y estudiadas al microscopio óptico. En la descripción celular se reconocieron los com...

  6. Dose-dependent protective effect of baicalin against testicular torsion-detorsion in rats.

    Science.gov (United States)

    Fouad, A A; Qutub, H O; Jresat, I

    2017-02-01

    Testicular torsion/detorsion induces oxidative/nitrosative stress, inflammation and apoptosis of testicular tissues. Baicalin exerts antioxidant and anti-inflammatory properties. This study investigated the possible protective effect of baicalin against testicular torsion-detorsion injury in rats. Surgical testicular torsion was induced for 2 h, followed by detorsion which was continued for 24 h. Baicalin was administered in three different doses (25, 50 and 100 mg kg-1 , by intraperitoneal injection). Each dose was given twice, the first 30 min before and the second 12 h after testicular detorsion. Baicalin, in a dose-dependent manner, decreased the torsion/detorsion-induced elevations of testicular malondialdehyde, nitric oxide, tumour necrosis factor-α, BCL2-associated X protein (Bax), cytosolic cytochrome c and caspase-3 and caspase-9 activities. Baicalin, dose dependently, attenuated the reductions of B-cell leucemia/lymphoma 2 (Bcl-2), and glutathione peroxidase and superoxide dismutase activities in testicular tissues resulted from torsion/detorsion. In addition, baicalin ameliorated the histopathological testicular tissue damage and reduced the expression of Fas ligand in rat testes exposed to torsion/detorsion in a dose-dependent manner. It was concluded that baicalin, dose dependently, ameliorated testicular injury induced by torsion/detorsion via its antioxidant, antinitrosative, anti-inflammatory and anti-apoptotic effects. © 2016 Blackwell Verlag GmbH.

  7. Testicular Growth During Puberty in Boys With and Without a History of Congenital Cryptorchidism

    DEFF Research Database (Denmark)

    Sadov, Sergey; Koskenniemi, Jaakko J; Virtanen, Helena E

    2016-01-01

    CONTEXT: The pattern of testicular growth during puberty may provide important information about early testicular damage and reproductive potential in adulthood. OBJECTIVE: To evaluate pubertal testicular growth in boys with congenital cryptorchidism and controls. DESIGN: Longitudinal case...... mL by orchidometer and 25 mm by ruler as cut-offs in definition of the onset of puberty. An orchidometer size of 3 mL and ruler length of 25 mm corresponded to 1.6 and 1.7 mL by ultrasound (with Lambert's formula), respectively. CONCLUSIONS: Testicular growth in puberty was impaired in congenitally...

  8. Aetiology of testicular cancer: association with congenital abnormalities, age at puberty, infertility, and exercise

    National Research Council Canada - National Science Library

    Forman, D; Pike, M C; Davey, G; Dawson, S; Baker, K; Chilvers, C E D; Oliver, R T D; Coupland, C A C

    1994-01-01

    Abstract Objective : To determine the risk of testicular cancer associated with undescended testis, inguinal hernia, age at puberty, marital status, infertility, vasectomy, and amount of exercise. Design...

  9. Risk factors in past histories and familial episodes related to development of testicular germ cell tumor.

    Science.gov (United States)

    Kanto, Satoru; Hiramatsu, Masayoshi; Suzuki, Kenichi; Ishidoya, Shigeto; Saito, Hideo; Yamada, Shigeyuki; Satoh, Makoto; Saito, Seiichi; Fukuzaki, Atsushi; Arai, Yoichi

    2004-08-01

    A retrospective study was conducted to examine the host factors of 240 testicular germ cell tumor patients. This study was performed to address a new theory proposed by Skakkebaek called testicular dysgenesis syndrome which claims that cryptorchism, hypospadias, poor semen quality and testicular germ cell tumors are symptoms of an underlying testicular dysgenesis in uterus. The past health histories and familial episodes of 240 testicular germ cell tumor patients were examined. The past health histories included cryptorchism, hypospadias, infertility, atrophic testis and inguinal hernia. Of the 240 patients, 13 (5.4%) had a history of cryptorchism or orchidopexy. Two (0.8%) showed existence of hypospadias or had experienced urethroplasty. Among 129 married couples, 104 (80.6%) couples were fertile. Three (1.3%) patients developed testicular tumors after they were diagnosed as infertile or came to the hospital with the complaints of infertility. Four (1.7%) had contralateral atrophic testis. 19 (7.9%) had experienced inguinal herniorrhaphy before age 15. Three (1.3%) had testicular germ cell tumor patients among their family or relatives. The testicular germ cell tumor patients showed a considerable incidence of complications such as cryptorchism, hypospadias and incomplete closure of processus vaginalis. Cryptorchism, perinatal factors and familial factors could be risks for developing testicular germ cell tumors.

  10. Correlações entre a hemodinâmica testicular e as características espermáticas em carneiros

    Directory of Open Access Journals (Sweden)

    Leonardo Batissaco

    2013-10-01

    Full Text Available A artéria testicular é responsável pelo fluxo de sangue que chega aos testículos e tem grande importância na termorregulação. Mudanças vasculares nos testículos podem levar à queda da produção espermática, refletindo na motilidade e morfologia. O objetivo deste trabalho foi avaliar as correlações entre a vascularização testicular e as características espermáticas. Foram utilizados oito carneiros adultos Santa Inês com diferentes status reprodutivos. A vascularização testicular e as características seminais foram avaliadas por um período de 90 dias. A ultrassonografia Doppler colorida foi utilizada para avaliar a hemodinâmica testicular. Foram calculados os índices de resistência (RI e os índices de pulsatilidade (PI com o modo espectral do Doppler. O modo colorido do Doppler foi utilizado para analisar o fluxo sanguíneo do plexo pampiniforme e do parênquima testicular. As características seminais avaliadas foram o volume, concentração, motilidade e morfologia. Os dados foram submetidos ao teste de correlação linear de Person (P < 0.05 foi considerado significativo. Não foram encontradas relações entre motilidade e a hemodinâmica testicular. A porcentagem de defeitos totais correlacionou-se positivamente com o escore de vascularização dos parênquimas direito e esquerdo, e com o RI e PI esquerdos. Também o escore de vascularização dos plexos se correlacionou positivamente com a média de pixels e negativamente com o RI e PI, de ambos os lados. Este trabalho mostrou que o aumento de defeitos espermáticos pode estar correlacionado com o aumento do fluxo sanguíneo nos testículos; contudo, mais estudos são necessários.

  11. Testicular ultrasensitive Doppler preliminary experience: a feasibility study.

    Science.gov (United States)

    Rocher, Laurence; Gennisson, Jean-Luc; Ferlicot, Sophie; Criton, Aline; Albiges, Laurence; Izard, Vincent; Bellin, Marie France; Correas, Jean-Michel

    2018-03-01

    Background Ultrasensitive Doppler is a novel non-invasive ultrasound (US) Doppler technique that improves sensitivity and resolution for the detection of slow flow. Purpose To investigate the feasibility of ultrasensitive Doppler (USD) for testicular disease diagnosis, using both qualitative and quantitative results. Material and Methods This prospective study was conducted in 160 successive men referred for scrotal US including B-mode and conventional Color-Doppler. A new USD sequence and algorithm dedicated to academic research were implemented into the US system. The quality criterion for a successful examination was the detection of well delineated intratesticular vessels. Qualitative USD results were described in terms of tumor vascular architecture and flow intensity for different pathologies for 41 patients. The testicular vascularization (TV), defined as a vessel's surface ratio, was quantified using customized MATLAB® software and compared in azoospermic and normal patients. Results USD was acquired successfully in 153/160 patients (95.6%). The tumor vascular architecture differed depending on the nature of the tumors. Leydig cell tumors exhibited mostly circumferential vascularization, while germ cell tumors exhibited straight vessels through the tumors, or anarchic vascular maps. USD improved the diagnostic performance of testicular Doppler US in a case of incomplete spermatic cord torsion and acute epididymitis. The reproducibility of TV measurements established an interclass correlation of 0.801. Non-Klinefelter syndrome non-obstructive azoospermia patients exhibited a lower TV compared to normal patients, to Klinefelter syndrome, and to obstructive azoospermia patients ( P < 0.002, P < 0.005, and P < 0.05, respectively). Conclusion Testicular USD can become a promising technique for improving US diagnosis of tumors, acute scrotum, and for determining infertility status.

  12. Tissue Engineered Testicular Prostheses With Prolonged Testosterone Release

    Science.gov (United States)

    2008-12-01

    in infertile men. Fertil. Steril ., Epub ahead of print. Marshall, S., 1986: Potential problems with testicular prostheses. Urology, 28, 388-390...strengths to maintain structural integrity. The polymers were sterilized in ethylene oxide and placed under sterile conditions until cell delivery...washed in Povidone-iodine 10% solution, and dissected into 2 to 3 mm tissue fragments. Chondrocytes were isolated under sterile conditions using a

  13. Osteonecrosis in patients with testicular tumours treated with chemotherapy.

    OpenAIRE

    Berkmortel, F. van den; Wit, R.; Rooy, J.W.J. de; De Mulder, P. H. M.

    2004-01-01

    The role of antiemetics is invaluable in allowing cancer patients to complete, otherwise possibly intolerable, chemotherapy. In the Perugia Consensus Conference it was decided that the recommended antiemetic regimen in the prevention of acute emesis induced by a single high, low and repeated doses of cisplatin is a serotonin receptor antagonist plus dexamethasone. We describe three testicular cancer patients who were cured with chemotherapy but developed bilateral osteonecrosis of the femoral...

  14. Factors affecting pediatric patient transfer in testicular torsion.

    Science.gov (United States)

    Lodwick, Daniel L; Cooper, Jennifer N; Minneci, Peter C; Deans, Katherine J; McLeod, Daryl

    2016-06-01

    Testicular torsion is a surgical emergency, and interhospital transfer could delay care and increase the risk of orchiectomy. This study identifies factors associated with transfer for pediatric testicular torsion. This retrospective cross-sectional study examined emergency department (ED) visits for testicular torsion by men aged 1-21 y in National Emergency Department Sample from 2006 to 2012. Freestanding children's hospitals were excluded. Analyses were weighted to produce nationally representative estimates. Patient- and institutional-level predictors of transfer were evaluated using Rao-Scott chi-square tests and multivariable logistic regression. There were 11,435 ED visits for testicular torsion resulting in admission or transfer. In multivariable regression, the probability of transfer decreased with increasing age but remained higher for patients aged 15-17 y than for those aged 18-21 y (odds ratio [OR] = 1.51, P patients living in zip codes in the highest income quartile (OR = 0.69 versus lowest, P = 0.003) or with listed comorbidities (OR = 0.55, P Transfer was less likely in the Northeast (OR = 0.28 versus Midwest, P Transfer was less common with increasing annual pediatric ED volume (OR = 0.95 per 1000 patients, P Transfer rates increased significantly over the study period (23.6%-38.8%, P transferred than young adults. Interhospital transfers in these patients may represent a potential target for improving care. Future work should focus on evaluating the effect of transfer on the risk for undergoing orchiectomy. Copyright © 2016 Elsevier Inc. All rights reserved.

  15. Identification of Stem Leydig Cells Derived from Pig Testicular Interstitium

    OpenAIRE

    Shuai Yu; Pengfei Zhang; Wuzi Dong; Wenxian Zeng; Chuanying Pan

    2017-01-01

    Stem Leydig cells (SLCs), located in the testicular interstitial compartment in the mammalian testes, are capable of differentiating to testosterone-synthesizing Leydig cells (LCs), thus providing a new strategy for treating testosterone deficiency. However, no previous reports have identified and cultured SLCs derived from the pig. The aim of the current study was to isolate, identify, and culture SLCs from pigs. Haematoxylin and eosin staining and immunochemical analysis showed that SLCs we...

  16. Efeito do uso de enzimas sobre o desempenho e metabolismo de poedeiras Effect of the use of enzymes on the performance and metabolism of laying hens

    Directory of Open Access Journals (Sweden)

    Maurício Tárcio dos Santos Viana

    2009-06-01

    Full Text Available Objetivou-se verificar o efeito da adição do complexo enzimático (CE sobre o desempenho e o metabolismo de poedeiras. Foram utilizadas 216 poedeiras da linhagem Bovans Goldline, distribuídas em delineamento experimental inteiramente casualizado, com 12 repetições de seis aves por unidade experimental e 3 tratamentos: controle positivo; controle negativo; e controle negativo + Rovábio® Max (100 g/t. A dieta controle positivo foi formulada segundo recomendações das tabelas brasileiras e a dieta controle negativo foi calculada reduzindo os nutrientes presentes na matriz nutricional da enzima de acordo com a empresa produtora. Avaliaram-se o consumo de ração, a produção de ovos, o peso dos ovos, a massa de ovo, a conversão por massa de ovo, a conversão alimentar por dúzia (CAD e os componentes do ovo no período de 24 a 36 semanas de idade. No ensaio de metabolismo, calcularam-se os valores do coeficiente de digestibilidade da matéria seca, da energia metabolizável aparente (EMA e da energia metabolizável corrigida (EMAn, bem como seus coeficientes de metabolizabilidade e a retenção de nitrogênio e do balanço de P e Ca das dietas. Nas aves mantidas com a dieta controle negativo, a adição de complexo enzimático na dieta melhorou o percentual de postura e a conversão alimentar por dúzia. A redução dos níveis nutricionais das dietas resultou em menores valores de EMA e EMAn. A suplementação de complexo enzimático às dietas com menores níveis nutricionais melhorou os valores de EMA, resultando em valores similares aos obtidos nas aves alimentadas com a ração controle positivo. Poedeiras alimentadas com a ração controle positivo apresentam maior ingestão, excreção e retenção de fósforo (mg/ave/dia, entretanto, quando a ração é suplementada com complexo enzimático, ocorre maior retenção de fósforo pelas aves.The effect of the addition of multienzymatic complex on performance and metabolism of laying

  17. Qualidade do sêmen de touros das raças Aberdeen Angus e Brangus-Ibagé em frente à degeneração testicular experimental induzida por dexametasona Bulls semen quality of Aberdeen Angus and Brangus-Ibagé breeds after experimental testicular degeneration induced by dexamethasone

    Directory of Open Access Journals (Sweden)

    Marilise Mesquita Horn

    1999-09-01

    Full Text Available Foi administrada dexametasona para indução de degeneração testicular experimental em touros de uma raça taurina pura (Aberdeen Angus e de sua sintética derivada (Brangus-Ibagé. O objetivo deste estudo foi o de averiguar a diferença de sensibilidade na função gametogênica em frente à degeneração experimental. Para tal, foram avaliados os aspectos físicos e morfológicos do sêmen. Os dados obtidos foram analisados considerando o dia de coleta e genótipo. Os resultados revelaram que os dois grupos raciais comportaram-se semelhantemente ao longo das coletas. A despeito do número de animais empregados, o uso da degeneração testicular experimental possibilitou evidenciar que não há diferença entre as duas raças quanto à intensidade da degeneração e tempo necessário para o restabelecimento do quadro espermático normal.Testicular degeneration was induced by dexamethasone injection in bulls from a European breed Aberdeen Angus and a derived synthetic crossbreed (Brangus-Ibagé. Aiming to investigate differential sensibility on gametogenic function in these genotypes, physical and morphological semen characteristics were evaluated. The data analysed considered the day of the semen samples and the breed. Our results reveal that both breeds behave similarly during the experimental period. Even considering the number of bulls used in this experiment, the employed methodology gives no evidence of any difference between breeds, intensity of degeneration or time required to the reestablishment of normal sperm frequencies after experimental induction of testicular degeneration.

  18. Stage 1 testicular seminoma; Seminomes testiculaire de stade 1

    Energy Technology Data Exchange (ETDEWEB)

    Gross, E.; Champetier, C.; Zaccariotto, A.; Duberge, T. [Departement de radiotherapie, hopital de la Timone, 13 - Marseille (France); Pointreau, Y. [Service de radiotherapie, centre regional universitaire de cancerologie Henry-S.-Kaplan CHU de Tours, Hpital Bretonneau, 37 - Tours (France); Chauvet, B. [Institut Sainte-Catherine, 84 - Avignon (France)

    2010-07-01

    Testicular cancer is rare, representing only 1 % of malignant tumors, but the most common cancer in young men, 15 to 35 years. Adjuvant radiotherapy after orchidectomy in testicular seminoma stage I, reduces risk of relapse. It aims to eradicate micro-metastatic disease in lymph drainage territories. In the case of adjuvant radiotherapy, the relapse-free survival of 96 % with an overall survival of 98 % at 5 years. The irradiation volume is made up of lymph nodes paraaortic which it is possible to add the ipsilateral renal hilum to the testicular lesion. The current recommended dose is 20 Gy in 10 fractions and 2 weeks, usually delivered by two antero-posterior beams. The acute toxicities, mainly represented by nausea and diarrhea are usually quickly resolved to the end of irradiation. Regarding toxicities long-term, preservation of semen should be considered after surgery because of fear of infertility post-treatment. The risk of second cancer associated with exposure to ionizing radiation, albeit small, is especially important to consider these patients to significant life expectancy. Nevertheless, developments in radiotherapy techniques and lower doses and irradiated volumes can probably reduce this risk further. (authors)

  19. Serum Levels of Trace Elements in Patients with Testicular Cancers

    Science.gov (United States)

    Kaba, Mehmet; Pirinççi, Necip; Yüksel, Mehmet Bilgehan; Geçit, İlhan; Güneş, Mustafa; Demir, Murat; Akkoyun, HurremTuran; Demir, Halit

    2015-01-01

    ABSTRACT Introduction: Trace elements are primary components of biological structures; however, they can be toxic when their concentrations are higher than those needed for biological functions. Materials and Methods: In the present study serum levels of trace elements were measured in 30 patients (mean age was 26.9±11.2 years) newly diagnosed with germ cell testicular cancer and 32 healthy volunteers (mean age: 27.4±10.8) by using furnace atomic absorption spectrophotometer. Serum samples were stored at-20°C until assays. Results: In patients with germ cell testicular cancer, the diagnosis was seminoma in 15, mix germ cell tumor in 7, embryonal carcinoma in 4, yolk sac tumor in 2 and teratoma in 2 patients. There was stage I testicular tumor in 19 patients (63.3%) while stage II in 6 patients (20.0%), stage IIIA in 4 patients (13.3%) and stage IIIC in one patient (3.4%). It was found that serum Co, Cu, Mg and Pb levels were increased (ptrace elements. PMID:26742967

  20. Multiple vascular anomalies involving renal, testicular and suprarenal arteries

    Directory of Open Access Journals (Sweden)

    Suresh Rao

    2015-09-01

    Full Text Available Knowledge of variations of blood vessels of the abdomen is important during operative, diagnostic and endovascular pro- cedures. During routine dissection of the abdominal cavity, we came across multiple vascular anomalies involving renal, suprarenal and testicular arteries. The left kidney was supplied by two renal arteries originating together from the abdomi- nal aorta, and the right kidney was supplied by two accessory renal arteries, one of which was arising from the right renal artery and the other one from the aorta (about 2 inches below the origin of the renal artery. Accessory renal veins were present on both sides. The right testicular artery was arising from the lower accessory renal artery. The left testicular artery was looping around the inferior tributary of the left renal vein, whereby forming a sharp kink. The left middle suprarenal artery was diving into three small branches; the upper two branches were supplying the left suprarenal gland, whereas the lower branch was supplying the left kidney. Furthermore, detailed literature and the clinical and surgical importance of the case are discussed. [Arch Clin Exp Surg 2015; 4(3.000: 168-171