| Literature DB >> 10321805 |
M B Sørensen1, M Stoltenberg, G Danscher, E Ernst.
Abstract
The effects of two different zinc chelators, diethyldithiocarbamate (DEDTC) and calcium ethylenediaminetetraacetic acid (EDTA), in full semen samples and 'swim-up' samples were investigated. DEDTC, which crosses cell membranes, and EDTA, which does not cross cell membranes, were added to semen samples in different concentrations. Sperm cell motility parameters were assessed by computer-assisted semen analysis (CASA). It was found that very small concentrations (0.01 mM) of DEDTC immobilized the sperm cells within 80 min, while EDTA had no depressing effect at the concentrations used. In full semen samples EDTA enhanced straight line velocity (VSL) at concentrations of 1.0 and 0.5 mM; this effect was not found at higher concentrations. It is suggested that intracellular mitochondrial zinc ions play a crucial role for sperm cell motility, while loosely bound or free zinc ions in the seminal plasma exert a secondary role on human sperm cell motility.Entities:
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Year: 1999 PMID： 10321805 DOI： 10.1093/molehr/5.4.338
Source DB: PubMed Journal: Mol Hum Reprod ISSN： 1360-9947 Impact factor: 4.025