Daily Sperm Production
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Reproductive effects of the psychoactive beverage ayahuasca in male Wistar rats after chronic exposure
Abstract Ayahuasca is a psychoactive beverage used ancestrally by indigenous Amazonian tribes and, more recently, by Christian religions in Brazil and other countries. This study aimed to investigate the reproductive effects of this beverage in male Wistar rats after chronic exposure. The rats were treated by gavage every other day for 70 days at 0 (control)
Rev. bras. farmacogn.. Publicado em: 2017-06
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2. Sodium fluoride does not alter sperm production or sperm morphology in rats
The aim of the present study was to evaluate the effects of sodium fluoride (NaF) on the male reproductive system. Adult male rats were exposed to NaF in drinking water for 30 days at three concentrations: 1.54 (control, tap water), 50 and 100 ppm. Body and organ weights, daily sperm production, sperm number and morphology were investigated. No difference wa
Brazilian Archives of Biology and Technology. Publicado em: 2012-04
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3. Restrição protéica in utero : desenvolvimento sexual e histofisiologia do sistema reprodutivo de ratos machos / In utero protein restrition : sexual development and histophysiology of the rat male reproductive tract
In the past few years the worldwide recognition of the relevance of nutrition as a basis for social and economic development has been growing. In developing countries such as Brazil undernutrition is a socioeconomic problem caused by poor nutrition and low income. The birth of children with low birth weight is considered an important public health problem, w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/02/2010
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4. ANÁLISE MORFOFUNCIONAL DA ESPERMATOGÊNESE DO CAVALO DA RAÇA CRIOULA / MORPHO-FUNCTIONAL ANALYSIS OF SPERMATOGENESIS OF THE CRIOULO HORSE
Os objetivos deste experimento foram descrever a biometria testicular, a morfologia dos túbulos seminíferos, determinar o rendimento intrínseco da espermatogênese, estimar a produção espermática diária e a capacidade de suporte das células de Sertoli em equinos Crioulos, fora da temporada de monta, utilizando-se 10 garanhões com idade e peso médio
Publicado em: 2010
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5. Oxidative stress and reproductive disorders in hyperglycemic male rats : antioxidant potencial of vitamins C and E / Relação entre estresse oxidativo e desordens reprodutivas em ratos machos hiperglicemicos : potencial antioxidante das vitaminas C e E
The hyperglycemia is related to disorders in the male reproductive system. When induced chemically, it can reduce the sexual hormones level, reproductive organs weight, sperm concentration, and fertility as well as the male rat sexual behavior. In men, the hyperglycemia can lead to sexual impotence, libido and spermatogenesis reduction. However, the main
Publicado em: 2009
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6. Parametros reprodutivos masculinos e fertilidade de ratos adultos expostos ao inseticida fenvalerato / Male reproductive parameters and fertility of adult rats exposed to fenvalerate
Fenvalerate is a synthetic pyrethroid insecticide widely used in agriculture to control a variety of insects. Although it is considered to be of low acute toxicity to mammals, studies have showed that pyrethroids can have estrogenic activity and can act as endocrine disruptors, causing important reproductive impairment in males. It is documented in the liter
Publicado em: 2006
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7. 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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8. Analise quantitativa, duração do ciclo do epitelio seminifero e produção espermatica do testiculo do gerbilo da Mongolia (Meriones unguiculatus)
The gerbil (Meriones unguiculatus) is a rodent native of the arid regions of Mongolia and China, is of special interest in biomedical research and has been bred in laboratory since 1960. Studies on the structure and function of the gerbil testis are sporadic and, moreover those on spermatogenesis are rare. This is the first study to perform a more detailed i
Publicado em: 2003
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9. The role of angiotensin-(1–7) receptor Mas in spermatogenesis in mice and rats
Evidence regarding the components of the renin–angiotensin (Ang) system suggests that this system plays an important role in male reproduction. However, there are few data available in the literature on the effects of Ang-(1–7) on the male reproductive system. The present study investigated the effects of the genetic deletion and chronic blockage of Ang-
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