二十八烷醇制剂对运动性疲劳大鼠自由基代谢和心脏内分泌功能的影响

目的 探讨二十八烷醇制剂对运动性疲劳大鼠运动能力、血液自由基代谢及心脏内分泌功能的影响.方法 以运动性疲劳大鼠为模型,记录一次性力竭运动时间,测定大鼠血清过氧化物歧化酶(SOD)活性、丙二醛(MDA)含量,以及血浆内皮素(ET)、降钙素基因相关肽(CGRP)、心钠素(ANP)的含量.结果 与运动疲劳组相比,补充"二十八烷醇制剂"组大鼠力竭运动时间显著延长(P<0.05);血清SOD活性显著增强(P<0.05),MDA含量显著降低(P<0.05);血浆ET含量显著减少(P<0.05),CGRP和ANP含量显著升高(P<0.05),且效果均优于丙酮酸-肌酸组.结论 二十八烷醇制剂可提高大鼠的运动能力.同时可增强血液抗氧化酶活性,抑制力竭运动后脂质过氧化作用,调节大鼠心肌内分泌功能,对心脏起到积极的保护作用.

Effect of octacostyl alcohol preparation on blood free radical metabolism and cardiac endocrine function of rats

OBJECTIVE: To evaluate the effect of octacostyl alcohol preparation on the motor function, blood free radical metabolism and cardiac endocrine function of rats. METHODS: A rat model of exercise fatigue was used for this study. The rats were made to perform continuous exhaustive exercise, and the total exercise time of the rats till exhaustion was recorded followed by examination of the serum superoxide dismutase (SOD), malonaldehyde (MDA), plasma endothelin (ET), calcitonin gene-related peptide (CGRP), and atrial natriuretic peptide (ANP). RESULTS: Compared with rats without interventions for exercise fatigue, the rats receiving octacostyl alcohol preparation had significant prolonged exercise time till exhaustion (P<0.05), with also significantly enhanced serum SOD activity (P<0.05), significantly decreased MDA level and plasma ET (P<0.05) and increased CGRP and ANP levels (P<0.05). Octacostyl alcohol preparation produced more favorable effect on all the indices measured than pyruvic acid-creatine (P<0.05). CONCLUSION: The octacostyl alcohol preparation can promote the motor function, increases blood antioxidase activity, suppressed lipid peroxidation in rats engaged in exhaustive exercise. The preparation also produces favorable effect on cardiac endocrine function for heart protection during exercise.