(广州体育学院 科研所,广东 广州 510075) 摘要:为了解抗氧化剂(维生素E、维生素C和硒)对老年运动小鼠抗氧化能力的影响,给老年运动小鼠补充抗氧化剂(每5 mL饮用水中含VitE 0.25 IU,VitC 0.5 mg、亚硒酸钠0.005 mg)5个月,测定小鼠骨骼肌线粒体及胞浆抗氧化酶活性。结果表明,补充抗氧化剂后运动小鼠骨骼肌CuZnSOD及MnSOD活性下降,胞浆GSH-px活性明显升高,而线粒体GSH-px及胞浆Cat活性无显著性变化,补充抗氧化剂的小鼠骨骼肌线粒体脂褐素含量明显降低。抗氧化剂可适度减轻运动鼠的氧化应激水平。 关键词:抗氧化剂;运动小鼠;抗氧化酶;骨骼肌 中图分类号: G804.7 文献标识码:A 文章编号:1006-7116(2003)04-0058-03 |
LU Jian, CHEN Cai-zhen, XU Yong-gang, LAI Rong-xing
(Scientific Search Section,Guangzhou Institute of Physical Education, Guangzhou 510075,China) Abstract:To investigate the effect of antioxidant (Vitamin E, Vitamin C and Selenium) on the antioxidant ability of exercise training aged mice,the present experiment detected antioxidant enzymes activities in mitochondria and cytrol of skeletal muscle after antioxidant supplementation for 5 months. The results showed that compared with control group, CuZnSOD and MnSOD activities in mitochondria decreased, GSH-px in cytrol increased ,while GSH-px in mitochondria and Catalase in cytrol were no significant changes, and the level of Lipofuscin in mitochondria decreased significantly.The results suggested that the oxidant and antioxidant system were in a status of a dynamic equilibrium after antioxidant supplementation. |
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