黄芪注射液拮抗阿霉素心脏毒性作用的研究

目的：研究黄芪注射液对阿霉素心脏毒性的保护作用及其机制。方法：采用阿霉素体外损伤大鼠心肌线粒体和体内小鼠心脏毒性两种模型，应用生化方法测定黄芪注射液对其心脏毒性的保护作用。结果：阿霉素体外引起大鼠心肌线粒体丙二醛（MDA）水平升高，谷胱甘肽（GSH）含量降低及线粒体肿胀等，黄芪注射液对上述损伤有明显的保护作用。体内实验表明，黄芪注射液对阿霉素引起的小鼠心肌线粒体丙二醛（MDA）、血清肌酸磷酸激酶（CK）、门冬氨酸氨基转移菌（AST）活性水平增高及超氧化物歧化酶（SOD）活性降低等损伤均有较好的保护作用。结论：黄芪注射液能拮抗阿霉素引起的心脏毒性，为临床应用黄芪注射液作为抗肿瘤辅助药物提供了实验依据。

Effect of Huangqi Injection on Doxorubicin-induced Cardiotoxicity

Objective:To study the protective effect of Huangqi Injection on cardiotoxicity induced by doxorubicin (DOX) and its mechanism. Methods: The molders of Dox-induced myocardial mitochondria damage of rat in vitro and Dox-induced cardiotoxicity in mice were used. The protective effect of Huangqi Injection on cardiotoxicity induced by doxorubicin was determined by biochemical method.Results: Doxorubicin can increse malondialdehyde level, induce mitochondrin swelling and decrease glutathione (GSH) content of myocardial mitochondria of rat in vitro, while all these damages caused by doxorubicin were reduced significantly by Huangqi Injection. Cardiotoxicity of doxorubicin in mice as measured by increases of myocardial malondialdehyde level and serum creatine phosphokinase activity, decreases of superoxide dimutase was significantly alleviated by Huangqi Injection. Conclusions: Huangqi Injection can protect heart against Dox-induced cardiotoxicity, which provides experimental evidence for Huangqi Injection as an anti-tumor adjuvant drug in clinical application.