Evaluating the Impacts of Osmotic and Oxidative Stress on Common Carp (Cyprinus carpio, L.) Sperm Caused by Cryopreservation Techniques
文献类型: 外文期刊
第一作者: Li, Ping
作者: Li, Ping;Li, Zhi-Hua;Dzyuba, Boris;Hulak, Martin;Rodina, Marek;Linhart, Otomar;Li, Ping;Li, Zhi-Hua;Dzyuba, Boris
作者机构:
关键词: antioxidant;cryopreservation;cryoprotectant;osmotic stress;sperm;spermatozoa motility;stress
期刊名称:BIOLOGY OF REPRODUCTION ( 影响因子:4.285; 五年影响因子:4.307 )
ISSN: 0006-3363
年卷期: 2010 年 83 卷 5 期
页码:
收录情况: SCI
摘要: Cryopreservation causes osmotic changes and oxidative damage that have sublethal and lethal effects on spermatozoa. We examined these osmotic and oxidative effects on common carp spermatozoa motility; membrane integrity; levels of thiobarbituric-acid-reactive substance (TBARS) and carbonyl groups (CP); and the activity of superoxide dismutase (SOD), glutathione reductase, and glutathione peroxidase (GPx). Sperm was diluted in dimethyl sulfoxide (DMSO) and ethylene glycol-based extenders, followed by equilibration, freezing, and thawing. Equilibration in DMSO extender resulted in a significant reduction of spermatozoa motility, but motility was induced in those spermatozoa following dilution with saline buffer, which usually inhibits undiluted spermatozoa motility. Spermatozoa velocity and membrane integrity decreased with both extenders following freezing and thawing. No significant difference in levels of TBARS or CP, or in SOD activity, was seen in samples equilibrated with either extender. The freeze/thaw process induced significantly higher levels of TBARS, CP, and GPx activity, but did not affect the level of SOD. Glutathione reductase activity was inhibited in samples exposed to DMSO extender. Ethylene glycol should be considered a preferred cryoprotective agent for common carp spermatozoa to reduce osmotic and oxidative stress during cryopreservation.
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