the aim followed in this study was to make a comparison of the composition of fatty acids available in the sperm lipids of cattle, sheep and goat. semen samples were collected from 28 holestein cows, 12 chal rams and 7 mahabadi goats. after washing out and removal of the seminal plasma, total lipids of the sperm were extracted and fatty acids trans-methylated. the fatty acid methyl esters were ...

Surface area and volume measurements were made for ram and human spermatozoa. Measurements were made using different techniques in an attempt to confirm estimates arrived at by independent methodologies. Sperm head projected surface areas were calculated from published formulae using linear micrometry measurements or were obtained directly by image analysis. Total surface areas were calculated ...

background: sodium arsenite can impair male reproductive function by inducing oxidative stress. silymarin is known as a potent antioxidant.objective: this study was performed to investigate if silymarin can prevent the adverse effect of sodium arsenite on ram sperm viability, motility and mitochondrial membrane potential.materials and methods: epidydimal spermatozoa obtained from ram were divid...

The lipids and proteins of sperm cells are highly regionalized in their lateral distribution. Fluorescence recovery after photobleaching studies of sperm membrane component lateral diffusibility have shown that the sperm plasma membrane is also highly regionalized in the extents and rates of diffusion of its surface components. These studies have also shown that regionalized changes in lateral ...

Cisplatin (CIS) is used in the treatment of cancer, but its nonspecific systemic actions lead to toxic effects on other parts of the body. This study investigated the severity of CIS toxicity by increasing its dose over a constant time period. Sprague Dawley rats were divided into five treatment groups and control group with CIS (2, 4, 6, 8, and 10 mg/kg) administered intraperitoneally for 5 da...

Background: Alteration in the protein signatures of functionally immature testicular spermatozoa occurs during their journey through the epididymis. This leads to acquisition of sperm domain specific functions essential for successful fertilization. Epididymal sperm proteins are preferred targets for immunocontraception as well as in elucidating the causes of infertility. The Background of the ...

Quassia amara is a medicinal plant with several pharmacological properties. There are preliminary reports implicating this plant in male reproductive toxicology. Single daily oral administration of methanol extract of Quassia amara stem bark for 6 weeks resulted in a significant reduction in the weight of the testes, caudal epididymis and seminal vescicle. Caudal epididymal sperm parameters sho...

cell in biological studies. The studies showed the good response of human sperm to cryobiologic assays. However, in farm animals because of different composition of the cell membrane and presence of more unsaturated fatty acid make sperm more sensitive to oxidative stress that is one the most important factors that can affect the sperm viability during cryopreservation. The aim of the present s...

Hexaconazole is a systemic triazole fungicide used in agricultural practices. The aim of the present investigation is to study the toxic effect of Hexaconazole on the epididymal spermatozoa. The adult male rats were exposed to Hexaconazole at the dose of 25 mg/kg body weight, orally daily for 60 days. The control group received corn oil alone as vehicle. Third group of rats were administered wi...

INTRODUCTION Congenital bilateral absence of vas deferens (CBAVD) is a non-treatable cause of obstructive azoospermia (OA). However, the affected men can father children by undergoing sperm retrieval (SR) and intracytoplasmic sperm injection (ICSI). MATERIALS AND METHODS This video describes percutaneous epididymal sperm aspiration (PESA), performed on a 36 year--old male with CBAVD. In PESA ...