Interaction of human sperm acrosomal proteinase with human seminal plasma proteinase inhibitors.
نویسندگان
چکیده
منابع مشابه
Properties of acrosomal hyaluronidase from bull spermatozoa. Evidence for its similarity to testicular hyaluronidase.
Sperm acrosomes contain hyaluronidase, the amount varying, respectively, from ram, rabbit, bull, human, boar, rat, and stallion sperm to rooster sperm that do not possess this enzyme. Hyaluronidase was partially purified from bull sperm acrosomal extracts by DEAE-cellulose chromatography. Bull sperm acrosomal hyaluronidase has an optimum pH of 3.75 and is not effected by freezing and thawing or...
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Proteolytic activity, acid phosphatase activity and fructose concentration were measured in seminal plasma from 205 human semen samples. Certain routine sperm characteristics were also determined. High fibrinolytic activity was found and TAME-esterase and proteinase activity was also present in all specimens. The activity of all the proteolytic enzymes correlated positively with the acid phosph...
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Background: Defective sperm quality is a significant cause of infertility in men. It is known that nitric oxide (NO) is a highly reactive free radical gas which has a dual function, being both a cytotoxic and necessary molecule for normal sperm production. Materials and Methods: To investigate correlation between NO levels with sperm parameters, a case-control study were designed with total of ...
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Spermatozoa generate reactive oxygen species (ROS) in physiological amounts which play a role in sperm functions during sperm capacitation acrosome reaction (AR) and oocyte fusion. In addition damaged sperm are likely to be the source of ROS. The most important ROS produced by human sperm are hydrogen peroxide superoxide anion and hydroxyl radicals. Besides human seminal plasma and sperm posses...
متن کاملPurification and partial characterization of proteinase inhibitors of equine seminal plasma.
The aims of the study were: 1/ to isolate and identify equine seminal plasma proteinase inhibitors, 2/ to evaluate their inhibitory potential, and 3/ to test a correlation between protein concentration in seminal plasma supernatant (obtained after precipitation with 36% ammonium sulfate) and stallion sexual maturity. Seminal plasma proteins obtained from six stallions were chromatographed in a ...
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عنوان ژورنال:
- Journal of reproduction and fertility
دوره 32 3 شماره
صفحات -
تاریخ انتشار 1973