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超氧化物歧化酶（superoxidedismutase，SOD）是一种有效的氧自由基清除剂，能催化O2;生成H2O2和O2的歧化反应，在防御氧的毒性、抗辐射损伤及预防衰老等方面具有重要作用。在人精液中也含有大量SOD，其活性是人血浆的20倍[1]。精液中SOD能够抑制人精子脂质过氧化，减少因脂质
Superoxide dismutase (SOD) is an effective scavenger of oxygen free radicals and catalyzes the disproportionation reaction of O2 and H2O2 and O2, playing an important role in the defense of oxygen toxicity, radiation damage and prevention of aging . In human semen also contains a lot of SOD, its activity is 20 times that of human plasma [1]. Sperm SOD can inhibit human sperm lipid peroxidation, reduce the lipid