N. S. Kocheshkova, Z. D. Vorobets
The paper systematizes modern ideas regarding the role of macroelements (including calcium ions) in physico-chemical, biochemical spermatozoid processes, that provides the preservation of their biological completeness and fertility. Information concerning ion content and ion distribution in semen of males of different age groups and in the ejaculate with different quality indicators is presented. The basic ion-transport systems that are identified in spermatozoid membranes of males and their role in sperm activation, cell active movement ability, maintenance of cell homeostasis etc. are discussed. General schemes of biochemical mechanisms of capacitation process and acrosomic reaction are proposed.
Key words: ejaculate, spermatozoids, calcium ions, Са2+-transport systems, capacitation, acrosomic reaction.
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