Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, Shaanxi, China.
Molecules. 2012 Apr 10;17(4):4281-91. doi: 10.3390/molecules17044281.
The present study was designed to evaluate the effect of quercetin on myocardial oxidative stress and immunity function impairment induced by isoproterenol in rats. To induce myocardial ischemia, Wistar rats were subcutaneously injected with isoproterenol (70 mg/kg). Blood immunity index, cardiac marker enzymes and antioxidative parameters in hearts were measured. It was found that the levels of blood AST, creatine kinase, NO, NOS, IL-10, IL-1, IL-8 and lactate dehydrogenase in isoproterenol-treated rats were significantly increased. The rats administrated with isoproterenol showed the declines in myocardial antioxidant enzymes activities. Administration of quercetin significantly ameliorated myocardial oxidative injury and immunity function impairment induced by isoproterenol. The results indicated that quercetin possesses activity against isoproterenol-induced myocardial oxidative injury and immunity function impairment, and that the mechanism of pharmacological action was related at least in part to the antioxidant activity of quercetin.
本研究旨在评价槲皮素对异丙肾上腺素诱导大鼠心肌氧化应激和免疫功能损伤的影响。为了诱导心肌缺血,Wistar 大鼠皮下注射异丙肾上腺素(70mg/kg)。测量心脏血液免疫指标、心脏标志物酶和抗氧化参数。结果发现,异丙肾上腺素处理的大鼠血液 AST、肌酸激酶、NO、NOS、IL-10、IL-1、IL-8 和乳酸脱氢酶水平显著升高。给予异丙肾上腺素的大鼠心肌抗氧化酶活性下降。槲皮素的给药显著改善了异丙肾上腺素诱导的心肌氧化损伤和免疫功能障碍。结果表明,槲皮素有对抗异丙肾上腺素诱导的心肌氧化损伤和免疫功能障碍的作用,其药理作用机制至少部分与槲皮素的抗氧化活性有关。