黄酮对脑缺血-再灌流损伤保护作用的实验研究

目的探讨养阴通脑颗粒中黄酮对脑缺血-再灌流损伤的保护作用。方法制作SD大鼠脑缺血-再灌流损伤模型,随机分假手术对照组、脑缺血-再灌流损伤组和黄酮组及维脑路通对照治疗组3组,观察各组脑组织前列环素(PGI2)含量、脑组织超氧化物岐化酶(SOD)活性和丙二醛(MDA)含量、血浆组织型纤溶酶原激活物(t-PA)活性及其抑制物(PAI)活性和脑组织ET-1基因表达等指标的变化。结果黄酮可显著提高脑组织PGI2含量;调节血浆t-PA与PAI的活性;显著降低脑组织MDA含量,提高脑组织SOD活性,抑制脑缺血脑皮层ET-1基因表达。结论黄酮具有抗凝、提高纤溶活性和提高细胞抗氧化等多种作用,黄酮对脑缺血-再灌流损伤具有保护作用。

Protective effects of anthoxanthin on cerebral ischemia-reperfusion injury

Objective To study protective effects of anthoxanthin on cerebral ischemia-reperfusion injury. Methods The cerebral ischemia-reperfusion injury models in SD rats were established and rats were divided into 4 groups at random:sham operation group,cerebral ischemia-reperfusion group, anthoxanthin group and Weinaolutong group.The contents of PGI_2,TXA_2,superoxide dismutase (SOD) and malonyl dialdehyde (MDA), and the changes of activated target of tissue plasminogen activator (t-PA) and its inhibitor (PAI) in blood plasma were measured. Results The anthoxanthin can increase the content of PGI_2 and decreased the TXA_2.It can regulate t-PA and PAI in plasma, decrease MDA and increase the SOD activity in cerebral tissue. Conclusion Anthoxanthin plays a role in anticoagulation, strengthening plasminogen activator and promoting the anti-oxidation of cell.