Oxygen metabolism of mammalian spermatozoa. Generation of hydrogen peroxide by rabbit epididymal spermatozoa
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چکیده
منابع مشابه
Formation of Hydrogen Peroxide by Chilled Goat Spermatozoa and the Effects of Dead Spermatozoa on Motility Characteristics
In this study, the formation of hydrogen peroxide (H2O2) by chilled goat spermatozoa was measured. Furthermore, the effects of dead spermatozoa on motility characteristics were studied. Fresh collected ejaculates from five Shami bucks were centrifuged and virtually all seminal plasma was removed. A part of the collected spermatozoa was killed by two ways: the first by repe...
متن کاملImmunological differentiation of epididymal and seminal spermatozoa of the rabbit.
Rabbit spermatozoa from the epididymis lack the antigenic material present on seminal spermatozoa, which these latter cells have in common with the seminal plasma. This observation provides further support for the indirect evidence, obtained previously, that antigenic material is taken up by the spermatozoa from the seminal plasma.
متن کاملProteomic changes in mammalian spermatozoa during epididymal maturation.
Epididymal maturation is associated with the activation of a cAMP-induced tyrosine phosphorylation cascade, which is ultimately associated with the expression of capacitation-dependent sperm functions, such as hyperactivated movement and acrosomal exocytosis. As spermatozoa progress through the epididymis they first acquire the capacity to phosphorylate tyrosine on targets on the principal piec...
متن کاملChemotaxis of rabbit spermatozoa.
According to reviews (Tyler, 1955; Rothschild, 1956), chemotaxis of spermatozoa towards eggs has not been unequivocally demonstrated in animals. However, more recently, Suzuki (i96ia-c) has claimed that, in several species of Japanese bitterlings, the spermatozoa are attracted to a substance found in the egg micropyle. Suzuki's experiments, as well as earlier ones that aimed to prove or disprov...
متن کاملImmunogenicity of Testicular and Epididymal Spermatozoa
Problem: The sequential changes in the immunogenicity of spermatozoa in male reproductive tract and the effect of seminal vesicle secretions are long thought to act as central players in influencing immunological equilibrium in the male reproductive tract. Method of Study: Popliteal lymph nodes of mice were collected on the 8th day after sensitizing them with the testicular and epididymal sperm...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1981
ISSN: 0306-3283
DOI: 10.1042/bj1980273