目的研究太子参对心肌梗死后慢性心衰大鼠氧化应激的干预作用。方法采用结扎大鼠冠状动脉导致急性心肌梗死(AMI)复制慢性心衰大鼠动物模型,以心指数、羟脯氨酸的含量分析心肌纤维化程度,以左心室超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GSH-Px)活力与总抗氧化能力(T-AOC)分析抗氧化能力,以丙二醛(MDA)含量分析氧化能力。结果大鼠冠脉结扎导致AMI 6周后,左心室体重指数、羟脯氨酸的含量提示心肌纤维化;左心室SOD、CAT、GSH-Px的活力显著降低、T-AOC水平明显下降,MDA含量显著增加。太子参水煎液连续ig给药5周,可显著降低心脏体重指数和左心室羟脯氨酸的含量;提高抗氧化酶的活力和T-AOC的水平,降低MDA的含量。结论太子参水煎液可改善心肌梗死后的慢性心衰,其机制可能与改善氧化应激状态,提高抗氧化能力,降低MDA的含量相关。
OBJECTIVE To investigate the ameliorated effects of Radix Pseudostellariae on oxidative stress in rat chronic heart failure induced by acute cardiac infarction after coronary artery ligation.METHODS Rat chronic heart failure was reproduced by coronary artery ligation after 6 weeks.The cardiac fibrosis was evaluated by weight indexes and hydroxyproline contents of left ventricular tissue.Antioxidant capacities were evaluated by assaying activities of superoxide dismutase(SOD),glutathione peroxidase(GSH-Px) a...