Testicular Degeneration
Mostrando 1-12 de 29 artigos, teses e dissertações.
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1. Testicular needle aspiration: Is it a safe method for breeding soundness evaluation in bulls?
Abstract The aim of this study was to evaluate the impact of successive bovine testicular punctures using different needle sizes. Fifteen bulls were submitted to testicular needle aspiration (TNA) in the left and right testis using 18-gauge (40×12mm) or 22-gauge (25×7mm) needles, respectively, once every 30 days. Animals were randomly divided into three gr
Anim. Reprod.. Publicado em: 25/11/2019
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2. Reproductive toxicity of neem seeds (Azadirachta indica) in male quail (Coturnix coturnix japonica)
RESUMO: Considerando que o neem (Azadirachta indica A. Juss.) causa efeitos deletérios na fertilidade, objetivou-se avaliar o efeito da alimentação com sementes de neem sobre a qualidade seminal, parâmetros biométricos e morfometria testicular com codornas (Coturnix coturnix japonica Linnaeus, 1758) com 90 dias de idade, como modelo experimental. Após
Cienc. Rural. Publicado em: 14/11/2019
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3. Angiotensin-converting enzyme inhibitors of Bothrops jararaca snake venom affect the structure of mice seminiferous epithelium
Background Considering the similarity between the testis-specific isoform of angiotensin-converting enzyme and the C-terminal catalytic domain of somatic ACE as well as the structural and functional variability of its natural inhibitors, known as bradykinin-potentiating peptides (BPPs), the effects of different synthetic peptides, BPP-10c (
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 29/09/2015
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4. Long term evaluation of morphometric and ultrastructural changes of testes of alloxan-induced diabetic rats
PURPOSE: To evaluate in a long term the morphometric and ultrastructural changes in seminiferous tubules (ST) of normal and diabetic rats, and to correlate any changes with animal age and diabetes duration. METHODS: Sixty male Wistar rats, three months-old, were randomly divided into two groups: 30 non-diabetic controls (N) and 30 alloxan untreated diabetic
Acta Cir. Bras.. Publicado em: 2013-04
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5. EFEITO in vitro DE Paullinia cupana NO METABOLISMO OXIDATIVO DE ESPERMATOZÓIDES HUMANOS EXPOSTOS AO CLORETO DE METILMERCÚRIO / EFFECT OF Paullinia cupana in vitro oxidative metabolism HUMAN SPERM EXPOSED TO CHLORIDE METHYLMERCURY
Investigations suggests that methylmercury (MeHg) toxicitiy is related to oxidative stress promotion caused by lipid peroxidation of cell membranes as well as genotoxicity. The methylmercury (MeHg) exposition causes production of adverse effects as deterioration of semen quality, testicular degeneration, and male reproductive failure. Since human sperm is a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/02/2012
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6. Características seminais de touros Curraleiros e Holandeses submetidos à insulação escrotal.
O objetivo deste trabalho foi comparar uma raça naturalizada brasileira com uma raça européia quanto à adaptação às altas temperaturas. Foram avaliados os efeitos da insulação escrotal, por 48 horas, nas características seminais de touros Curraleiros (n = 5) e Holandeses (n = 6). Uma seqüência de coletas de sêmen e avaliação andrológica dos t
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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7. Avaliação da degeneração testicular causada por insulação escrotal em carneiros: morfometria testicular, características seminais e ultrassonográficas. / Evaluating the testicular degeneration caused by scrotal insulation in rams: morphometry of testis, seminal characteristics and ultrasound.
A avaliação reprodutiva de ovinos deve ser realizada em rebanhos antes da estação reprodutiva, seleção de cordeiros para substituição, antes da compra de um ovino, ou quando se investigando um problema reprodutivo num rebanho. O exame ultras-sonográfico dos testículos permite a avaliação da anatomia, do parênquima do órgão e de estruturas vizi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/12/2010
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8. Efeitos do Roundup™ e do Thiodan em adultos de Astyanax bimaculatus (Characidae: Teleostei): Valores de CL50 e morfologia testicular / Effects of Roundup™ and the Thiodan in adults of Astyanax bimaculatus (Characidae: Teleostei): Values of CL50 and testicular morphology
The indiscriminated use of agrochemicals in modern agriculture is unleashing a series of damages to the environment posing serious threats to the survival of important ecosystems. The main objectives of the present study was to determine the LC50-96h and investigate the effects of Roundup™ (Monsanto) and Thiodan (Bayer) in testicular morphology of the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/07/2010
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9. Effect of melatonin and time of administration on irradiation-induced damage to rat testes
The effect of ionizing irradiation on testes and the protective effects of melatonin were investigated by immunohistochemical and electron microscopic methods. Eighty-two adult male Wistar rats were divided into 10 groups. The rats in the irradiated groups were exposed to a sublethal irradiation dose of 8 Gy, either to the total body or abdominopelvic region
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-07
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10. Effects of the overshadow availability at pasture on the reproductive characteristics in Nelore Bulls / Efeitos da disponibilidade de sombra na pastagem sobre as características reprodutivas de touros da raça Nelore
It is known that heat stress is the main cause that affects bulls reproductive performance, consequently leaded to testicular degeneration. This pathologic alteration can also occur in Bos Indicus cattle. The objective of this experiment was verify the shadow availability effect at pasture on reproductive characteristics in Nelore, a Bos Indicus bull. For th
Publicado em: 2009
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11. 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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12. Morpho-functional characteristics of sex reversal in Synbranchidae (Teleostei: Synbranchiformes) / Perfil morfo-funcional da inversão de sexo em Synbranchidae (Teleostei: Synbranchiformes)
Teleost fishes exhibit several sexual patterns during their ontogeny, in which the gonads change into functional ovaries or testes. In distinct Orders, both gonochoristic and hermaphrodite species, simultaneous as well as sequential or consecutive, can be found. In sequential hermaphroditism (protandrous or protogynous), sex change in adult individuais invol
Publicado em: 2006