首页> 外文期刊>American Journal of Physiology >Beneficial effects of moderate exercise on mice aging: survival, behavior, oxidative stress, and mitochondrial electron transfer.
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Beneficial effects of moderate exercise on mice aging: survival, behavior, oxidative stress, and mitochondrial electron transfer.

机译:适度运动对小鼠衰老的有益影响:存活,行为,氧化应激和线粒体电子转移。

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摘要

Moderate exercise in a treadmill (10, 15, and 20 cm/s, for 5 min each, weekly) from 28 to 78 wk of age extended male and female mice life span by 19 and 9% accompanied by 36 and 13% and 13 and 9% increased performance in behavioral assays (tightrope and T-maze tests) at 52 wk of age. Moderate exercise significantly decreased the aging-associated development of oxidative stress by preventing 1) the increase in protein carbonyls and thiobarbituric acid-reactive substances contents of submitochondrial membranes; 2) the decrease in antioxidant enzyme activities (Mn- and Cu,Zn-superoxide dismutase and catalase); and 3) the decrease in mitochondrial NADH-cytochrome-c reductase and cytochrome oxidase activities observed at 52 wk of mice age in brain, heart, liver, and kidney. These effects were no longer significant at 78 wk of age in mice. Moderate exercise, started at young age in mice, increased life span, decreased oxidative stress, and prevented the decline of cytochrome oxidase activity and behavioral performance at middle age but not at old age.
机译:在28至78周龄的跑步机上进行适度运动(每周10、15和20 cm / s,每分钟5分钟),雄性和雌性小鼠的寿命延长了19%和9%,而36、13%和13% 52周龄的行为分析(绳索和T型迷宫测试)性能提高了9%。适度运动可通过防止1)线粒体膜的蛋白质羰基和硫代巴比妥酸反应性物质含量的增加,显着降低与氧化应激相关的衰老相关发展; 2)抗氧化酶活性的降低(锰和铜,锌超氧化物歧化酶和过氧化氢酶); 3)在52周龄小鼠的脑,心脏,肝脏和肾脏中观察到线粒体NADH-细胞色素C还原酶和细胞色素氧化酶活性的降低。这些效应在小鼠78周龄时不再显着。适度的运动从小鼠的幼年开始,就可以延长寿命,减少氧化应激,并防止了细胞色素氧化酶活性和行为表现的下降,而在中年却没有。

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