摘要目的:探究维生素E对潜水高气压暴露大鼠精子质量的作用。方法:将16只雄性SD大鼠按照随机数字表法分为溶剂对照组与维生素E组，每组8只。在每次高气压暴露前，维生素E组给予100 mg/kg维生素E灌胃；溶剂对照组给予等量玉米油灌胃。2组大鼠均暴露于60 m空气环境下，每次1 h，连续暴露30 d，于最后一次暴露出舱后立即处死大鼠。HE染色观察大鼠睾丸的形态；显微镜观察大鼠精子的密度和活力；流式细胞仪检测精子DNA碎片指数。结果:与溶剂对照组相比，维生素E组大鼠的睾丸形态、精子密度无明显改变（ P>0.05）；精子活力和精子DNA碎片指数明显得到改善（ P<0.05）。 结论:维生素E可有效防护潜水高气压暴露大鼠精子DNA损伤的发生和精子活力的下降。

abstractsObjective:To investigate the effects of vitamin E on sperm quality of rats exposed to high pressure in diving.Methods:A total of 16 male rats were randomly divided into solvent control group and vitamin E group according to the random number table method，with 8 rats in each group. Before exposing to high pressure，the vitamin E group was given 100 mg·kg -1·d -1 of vitamin E by gavage，while the solvent control group was given the same amount of corn oil by gavage. The rats in both groups were exposed to air diving at a depth of 60 meters for 1 hour each time for 30 consecutive days，and were sacrificed immediately after the last exposure. The morphology of rat testis was observed by HE staining. The density and motility of rat sperms were observed under a microscope，and the DNA fragmentation index（DFI）of rat sperms was detected by flow cytometry. Results:Compared with the solvent control group，there was no significant changes in testicular morphology or sperm density in the vitamin E group（ P>0.05）；while the sperm motility and DFI in the vitamin E group were much better than those in the solvent control group，and the differences were statistically significant（ P<0.05）. Conclusion:Vitamin E can effectively prevent DNA damage and sperm motility decline in male rats exposed to high pressure in diving.