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Exercise and ovarian steroid hormones: their effects on mitochondrial respiration.

机译:运动和卵巢类固醇激素:它们对线粒体呼吸的影响。

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The effect of exercise on mitochondria respiration was studied in gastrocnemius muscle of ovariectomized rats, pseudopregnant rats, and estrous rats. The estrous cycles were followed by vaginal smears. Rats were made pseudopregnant (PSP) by 45 s cervical stimulation with a glass rod on the day of estrous. The treadmill protocol (21 m/min, 10 grade uphill) induced a significant decrease in state 3 oxygen consumption (oxidative phosphorylation) in estrous (0.26 +/- 0.02 vs. 0.49 +/- 0.05 microatoms O min(-1) mg protein(-1)) and ovariectomized rats (0.18 +/- 0.03 vs. 0.40 +/- 0.03 microatoms O min(-1) mg protein(-1)). In contrast, pseudopregnant and progesterone-treated ovariectomized rats did not decrease state 3 nor state 4 respiratory rates. These results show that the effect of exercise on mitochondria respiration does vary according to the hormonal status.
机译:研究了运动对去卵巢大鼠,假孕大鼠和发情大鼠腓肠肌线粒体呼吸的影响。发情周期后进行阴道涂片检查。发情当天,用玻璃棒对大鼠进行45 s的颈椎刺激使之成为假孕(PSP)。跑步机方案(21 m / min,10坡度上坡)导致发情状态下状态3的耗氧量(氧化磷酸化)显着降低(0.26 +/- 0.02与0.49 +/- 0.05微原子O min(-1)mg蛋白质(-1))和去卵巢的大鼠(0.18 +/- 0.03 vs. 0.40 +/- 0.03微原子O min(-1)mg蛋白(-1))。相比之下,假孕和孕激素治疗的去卵巢大鼠并未降低状态3或状态4的呼吸频率。这些结果表明,运动对线粒体呼吸的影响确实根据荷尔蒙状态而变化。

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