首页> 美国卫生研究院文献>Oxidative Medicine and Cellular Longevity >Daily Oxygen/O3 Treatment Reduces Muscular Fatigue and Improves Cardiac Performance in Rats Subjected to Prolonged High Intensity Physical Exercise
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Daily Oxygen/O3 Treatment Reduces Muscular Fatigue and Improves Cardiac Performance in Rats Subjected to Prolonged High Intensity Physical Exercise

机译:每天进行氧气/ O3处理可减少长时间进行高强度体育锻炼的大鼠的肌肉疲劳并改善心脏性能

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摘要

Rats receiving daily intraperitoneal administration of O2 and running on a treadmill covered an average distance of 482.8 ± 21.8 m/week as calculated during 5-week observation. This distance was increased in rats receiving daily intraperitoneal administration of an oxygen/O3 mixture at a dose of 100; 150; and 300 μg/kg with the maximum increase being +34.5% at 300 μg/kg and still present after stopping the administration of oxygen/O3. Oxygen/O3 decreased the mean arterial blood pressure (−13%), the heart rate (−6%), the gastrocnemius and cardiac hypertrophy, and fibrosis and reduced by 49% the left ventricular mass and relative wall thickness measurements. Systolic and diastolic functions were improved in exercised oxygen/O3 rats compared to O2 rats. Oxygen/O3 treatment led to higher MPI index starting from the dose of 150 μg/kg (p < 0.05) and more effective (+14%) at a dose of 300 μg/kg oxygen/O3. Oxygen/O3 dose-dependently increased the expression of the antioxidant enzymes Mn-SOD and GPx1 and of eNOS compared to the exercised O2 rats. The same doses resulted in decrease of LDH levels, CPK, TnI, and nitrotyrosine concentration in the heart and gastrocnemius tissues, arguing a beneficial effect of the ozone molecule against the fatigue induced by a prolonged high intensity exercise.
机译:每天接受腹膜内给药O2并在跑步机上奔跑的大鼠,在5周观察中计算出的平均距离为482.8±21.8 m /周。在每天接受腹膜内给与氧气/氧气混合物的剂量为100的大鼠中,该距离增加。 150;和300μg/ kg,在300μg/ kg时最大增加为+ 34.5%,并且在停止氧气/ O3给药后仍然存在。氧气/ O3降低了平均动脉血压(−13%),心率(−6%),腓肠肌和心脏肥大以及纤维化,使左心室质量和相对壁厚测量值降低了49%。与O2大鼠相比,运动氧气/ O3大鼠的收缩和舒张功能得到改善。氧气/ O3处理导致较高的MPI指数,从150μg/ kg的剂量开始(p <0.05),而以300μg/ kg的氧气/ O3的剂量更有效(+ 14%)。与运动的O2大鼠相比,氧气/ O3剂量依赖性地增加了抗氧化酶Mn-SOD和GPx1和eNOS的表达。相同剂量导致心脏和腓肠肌组织中LDH水平,CPK,TnI和硝基酪氨酸浓度降低,这表明臭氧分子对长时间高强度运动引起的疲劳具有有益作用。

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