نتایج جستجو برای: seminal characteristics

تعداد نتایج: 677438  

Journal: :Biology of reproduction 2000
B Barrios R Pérez-Pé M Gallego A Tato J Osada T Muiño-Blanco J A Cebrián-Pérez

Ejaculated ram spermatozoa, freed from seminal plasma by a dextran/swim-up procedure and exposed to cold shock, were incubated with ram seminal plasma proteins and analyzed by fluorescence markers and scanning electron microscopy. Seminal plasma proteins bound to the sperm plasma membrane modified the functional characteristics of damaged spermatozoa, reproducing those of live cells. Scanning e...

2014
T. A. Taha W. F. Shaaban F. D. EL-Nouty M. H. Salem

Mammalian seminal plasma contains many distinct components which are important for spermatozoal function and survival. Recent studies clearly indicated that gossypol has pronounced hazardous effects on seminal characteristics and seminal plasma constituents in male rabbits, which may lead to deleterious productive and reproductive performance. We examined the possible deleterious effects of two...

Journal: :Fertility and sterility 2009
Reda Mahfouz Rakesh Sharma Dipika Sharma Edmund Sabanegh Ashok Agarwal

OBJECTIVE To establish cutoff value, sensitivity, specificity and intra- and interobserver variability of total antioxidant capacity (TAC) in seminal plasma from healthy donors (controls) and infertile patients. DESIGN Seminal plasma from proven fertile donors (n = 55), nonproven fertile donors (n = 45), and infertile patients (n = 42) were examined for TAC level. SETTING Reproductive resea...

2014
Mark T. Anderson Lena Dewenter Berenike Maier H. Steven Seifert

Niche-restricted pathogens are evolutionarily linked with the specific biological fluids that are encountered during infection. Neisseria gonorrhoeae causes the genital infection gonorrhea and is exposed to seminal fluid during sexual transmission. Treatment of N. gonorrhoeae with seminal plasma or purified semen proteins lactoferrin, serum albumin, and prostate-specific antigen each facilitate...

Journal: :Journal of andrology 1989
M Maggi E Baldi A D Genazzani S Giannini A Natali A Costantini D Rodbard M Serio

Because of the presence of a high density of vasopressin receptors in the epithelial cells of porcine seminal vesicles similar to the V2 vasopressin receptors of renal tubules, human seminal vesicles and kidney were investigated using quantitative binding and adenylate cyclase studies. Tissues were obtained at surgery from 17 patients with urologic diseases. A homogeneous class of vasopressin b...

Payman A Shishehgar F,

Background: Zinc in human semen seems to play an important role in the physiology of spermatozoa. Zinc deficiency leads to gonadal dysfunction, decreases testicular weight, and causes shrinkage of seminiferous tubules. The adult human body contains 1-3 g of zinc, about 0.1% of which is replenished daily. Excessively high amounts of zinc has been reported in human seminal plasma by many authors,...

Journal: :cell journal 0

semen hyperviscosity (shv) is one of the factors involved in deficiency in sperm function. this research aimed to evaluate seminal plasma total antioxidant capacity (tac) and malondialdehyde (mda) levels in infertile patients with hyperviscous and non-hyperviscous semen samples to understand whether hyperviscous semen is associated with oxidative damage in infertile subjects. in this cross sect...

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