Results: 212

Differential expression and localization of ADAM10 and ADAM17 during rat spermatogenesis suggest a role in germ cell differentiation

Biol. Res; 47 (), 2014
BACKGROUND: Extracellular metolloproteases have been implied in different process such as cell death, differentiation and migration. Membrane-bound metalloproteases of the ADAM family shed the extracellular domain of many cytokines and receptor controlling auto and para/juxtacrine cell signaling in diffe...

Acumulación de acetaldehído y estrés oxidativo en testículo luego de la intoxicación alcohólica en ratas

En el hombre el consumo excesivo de alcohol está asociado con una disminución en la producción de testosterona y la atrofia testicular. Pudieron observarse consecuencias similares en estudios realizados in vitro en testículos aislados y la producción de testosterona, donde el acetaldehído mostró s...

Testis morphophysiology of rats treated with nandrolone decanoate and submitted to physical training

Acta sci., Health sci; 35 (2), 2013
The mammalian testis is a complex organ with endocrine and exocrine functions. It consists of seminiferous tubules where the production of the male gametes called spermatogenesis occurs. This process is influenced by a number of factors including the use of physical performance-enhancing drugs. The objec...

Effects of swimming on the testicular histomorphology of alcoholized rats

Acta sci., Health sci; 35 (1), 2013
O objetivo deste estudo foi examinar se a prática do exercício físico de longa duração e baixa intensidade reverte as alterações observadas nos testículos de ratos submetidos à dependência alcoólica induzida pela ingestão semivoluntária. Foram distribuídos 40 ratos machos em quatro grupos: ...

Histopathology of organs from neonate offspring born to female rats exposed to sublethal doses of biological and synthetic insecticides

Int. j. morphol; 31 (1), 2013
The current annual consumption of insecticides in agriculture in Brazil is over three million tons. The exposure happens through food that is contaminated with toxic waste and respiratory and dermal absorption. Biological control with Bacillus thuringiensis Berliner (Bt) has assumed increasing importance...

Effect of diet contains sesame seed on adult Wistar rat testis

Int. j. morphol; 31 (1), 2013
Studies show that some antioxidants are effective in improving male infertility. According to several antioxidant compounds that exist in sesame seed, this study was designed and carried out to the effects of sesame seed diet consumption on adult male rats testis structure and sex hormones. This experime...

Maternal water deprivation affects the spermatogenesis of the offspring rats

Int. j. morphol; 31 (1), 2013
Prenatal stresses such as water deprivation affect developmental process of embryo. This study evaluated the effects of water deprivation in pregnant mother on histological parameters of testis of offspring. Pregnant rats were divided into two groups (control and experimental). In experimental animals, w...

The effect of cannabis sativa hydroalcoholic extract on sperm parameters and testis histology in rats

Int. j. morphol; 31 (1), 2013
Cannabis Sativa is a multiuse herb in traditional medicine, its hydroalcoholic extract (10, 50, and 100 mg/kg) administered interaperitoneally for 14 consequent days to Wistar male rats resulted in significant decrease in progressive motility of sperm. Sperm count and seminiferous tubules diameter decrea...

Reproducción Estacional en el Macho

Int. j. morphol; 30 (4), 2012
Hay una sorprendente relación entre el ambiente y adaptaciones de la conducta reproductiva, muy evidente en los reproductores estacionales que pueden reproducirse en días cortos o largos, de acuerdo a factores proximales, especialmente el fotoperiodo luminoso que provoca cambios fotoneuroendocrinos. Es...

Bilateral Origin of the Testicular Arteries from the Lower Polar Accessory Renal Arteries

Int. j. morphol; 30 (4), 2012
The gonadal arteries (testicular or ovarian arteries) emerge normally from the lateral aspect of the abdominal aorta, a little inferior to the renal arteries. Several other sites of origin of these arteries have been recorded with the renal and accessory renal arteries being the most common. In the prese...