丹参酮ⅡA对脑缺血再灌注大鼠脑损伤的保护作用及对能量代谢的影响Protective effects of TanⅡA on brain injury induced by cerebral ischemia-reperfusion in rats and its effects on energy metabolism
胡霞敏,周密妹,胡先敏,王君
摘要(Abstract)：
目的观察丹参酮ⅡA(TanⅡA)对缺血再灌注大鼠脑损伤的保护作用及对能量代谢的影响。方法采用大鼠右侧大脑中动脉阻断(MCAO)局灶性脑缺血再灌注模型,缺血前给TanⅡA 8、16、32 mg·kg-1,灌胃7 d,末次给药1 h后线栓法制备大鼠MCAO短暂局灶性脑缺血模型,缺血2 h,再灌注22 h,分别用Longa’s法、TTC染色法、干燥失重法评价大鼠的神经功能状态、脑梗死面积及其脑水肿的程度;观察线粒体呼吸酶活性的变化;评价脑缺血再灌注损伤后脑组织超氧化物歧化酶(SOD)、丙二醛(MDA)及脑ATP含量的变化。结果TanⅡA(16、32 mg·kg-1)可明显减少MCAO后脑梗死面积、脑水肿的程度及改善神经功能症状;同时TanⅡA(16、32 mg·kg-1)能明显抑制MCAO大鼠脑线粒体呼吸酶及SOD酶活性的降低,升高脑组织ATP含量,降低脑组织中MDA的含量。结论TanⅡA对脑缺血再灌注损伤有明显的保护作用,该作用的产生可能与其改善脑线粒体能量代谢、抗氧化作用有关。
关键词(KeyWords)： 丹参酮ⅡA;脑缺血;线粒体;自由基
基金项目(Foundation):
作者(Author): 胡霞敏,周密妹,胡先敏,王君
DOI: 10.19577/j.cnki.issn10074406.2006.03.016
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