Leydig Cell
Mostrando 13-24 de 117 artigos, teses e dissertações.
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13. Age at orchiopexy and testis palpability predict germ and Leydig cell loss: clinical predictors of adverse histological features of cryptorchidism
International braz j urol. Publicado em: 2009-10
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14. Tumores testiculares na infância
Testicular and paratesticular prepuberal tumors are rare. They represent around 1% of the total of tumors of infancy. They subdivide in 2 groups: germ cells tumors and non germ cells tumors, being able to occur in all the ages, and about 75% are malignant, and about 19% of these they present metastasis. The tumors of germ cells tumors represent 60 75% of the
Revista do Colégio Brasileiro de Cirurgiões. Publicado em: 2009-02
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15. Testicular development of the Mongolian gerbil : postnatal differentiation of germ and Leydig cells / Desenvolvimento testicular no gerbilo da Mongolia : diferenciação pos-natal das celulas germinativas e de Leydig
O gerbilo da Mongólia (Meriones unguiculatus) tem sido utilizado de maneira crescente em estudos sobre o sistema genital masculino. Alguns aspectos da espermatogênese e o ciclo do epitélio seminífero dessa espécie são conhecidos, mas investigações sobre o desenvolvimento pós-natal do testículo e diferenciação das suas principais populações celu
Publicado em: 2009
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16. Intervenção farmacológica sobre o sistema serotoninérgico durante o desenvolvimento testicular pré-natal e neonatal de ratos Wistar utilizando cloridrato de fluoxetina
Atualmente, os inibidores da recaptação seletiva da serotonina (ISRS) são os antidepressivos mais freqüentemente prescritos para o tratamento da depressão, sendo o principal efeito colateral em adultos relacionado às disfunções sexuais. Distúrbios depressivos são comuns tanto durante o período pré-natal quanto nos meses iniciais após o nasciment
Publicado em: 2009
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17. Efeitos do extrato aquoso da raiz de Ouratea semiserrata (Mart.) Engl. (Ochnaceae) sobre os testículos de camundongos suíços adultos / Effects of aqueous extract from Ouratea semiserrata (Mart.) Engl. (Ochnaceae) root on Swiss adult mice testes
A utilização de plantas com ação afrodisíaca é uma prática que tem aumentado nos últimos anos, o que desperta o interesse de pesquisadores em investigações fitoquímicas, farmacológicas e clínicas. Ouratea semiserrata é utilizada popularmente como adstringente, antiinflamatória e estimulante sexual. Neste trabalho, buscou-se avaliar os efeitos
Publicado em: 2008
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18. Morphofunctional evaluation of the testis and the process of spermatogenic the oncilla (Leopardus tigrinus, SCHREBER, 1775) adult / Avaliação morfofuncional do testículo e do processo espermatogênico do gato-do-mato-pequeno (Leopardus tigrinus, SCHREBER, 1775) adulto
The study of testicular morphology and the spermatogenic process in wild animals is fundamentally important for the knowledge about the physiologic patterns, by which the assisted reproduction protocols are established. The objectives of this study were to describe morphometry data of testis and seminiferous tubule, quantify and describe the arrangement of t
Publicado em: 2008
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19. Association of cyclosporine and Heteropterys aphrodisiaca (no-de-cachorro) administered to Wistar rats : testicular structure, ultrastructure and morphometry / Associação de ciclosporina e Heteropterys aphrodisiaca (no-de-cachorro) adminstrados a ratos wistar : estrutura, ultra-estrutura e morfometria testicular
Cyclosporine A (CsA) has potent immunosuppressive properties and it has markedly improved the ability of transplant patients to survive grafts and is also used in some autoimmune diseases. However, the drug has several side effects, including testicular toxicity, leading to male infertility (and temporary impotence). Stimulant and aphrodisiac properties has
Publicado em: 2007
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20. Morphometric evaluation of the testis and spermatogenesis in adult oncelot (Leopardus pardalis, Linnaeus, 1758) / Avaliação morfométrica do testículo e da espermatogênese de jaguatiricas (Leopardus pardalis, Linnaeus, 1758) adultas
To study the spermatogenetic cycle in ocelots, were used, three adult males, proceeding from the Centro de Triagem de Animais Silvestres the Federal University of Viçosa and two adult males proceeding from the Fundação Zoobotânica of Belo Horizonte/MG/Brazil, authorized by the IBAMA-MG. These animals were submitted to general anesthesia, weighed and its
Publicado em: 2006
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21. Regulação da proliferação pós-natal das células de Sertoli em ratos
When indicating the number of spermatozoa produced in an adult animal, the neonatal period, in which the final number of Sertoli cells is established in rats, is key. It is believed that the main mitogenic factor of Sertoli cells is the FSH, while the thyroid hormone triiodothyronine (T3) would be responsible for the regulation of the maturation/differentiat
Publicado em: 2006
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22. Morphofunctional analysis of the testis and spermatogenesis in adult African lions (Panthera leo, Linnaeus, 1758) / Análise morfofuncional do testículo e espermatogênese de leões africanos (Panthera leo, Linnaeus, 1758) adultos
The study of the testis morphology and the spermatogenetic process in wild animals is fundamentally important for the knowledge about the physiologic patterns by which the assisted reproduction protocols are established. The following objectives were proposed in this study: to describe the data of both testis morphometry and seminiferous tubule; to quantify
Publicado em: 2005
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23. Plasma and testicular testosterone levels, volume density and number of Leydig cells and spermatogenic efficiency of rabbits
Plasma and tissue testosterone concentrations were determined by radioimmunoassay in 12 eight-month-old sexually mature New Zealand White rabbits and evaluated for possible associations with spermatogenic efficiency as well as with volume density and number of Leydig cells. Testicular tissue was processed histologically and histometry was performed in order
Brazilian Journal of Medical and Biological Research. Publicado em: 2002-04
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24. Histopathological changes in albino mouse testis induced by the administration of Tityus n. sp. venom
Scorpion envenoming is a public health concern in northeastern Venezuela. Specimens of the genus Tityus are responsible for most of these. In experimental animals, Tityus venom produces histopathological changes in the skeletal muscle and pancreas, but its toxicity to the reproductive system has not been studied. The aim of this work is to describe the histo
Journal of Venomous Animals and Toxins. Publicado em: 2000