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油酰乙醇胺在小鼠急性局灶性脑缺血再灌注损伤中的作用及机制
Authors
刘金凤
励佳忆
+5 more
周宇
杨武双
郑城微
金鑫
马昂
Publication date
20 December 2012
Publisher
Abstract
目的研究油酰乙醇胺(OEA)在脑缺血再灌注损伤中的作用及机制。方法线栓法制备小鼠大脑中动脉栓塞模型,缺血90 min后再灌注。应用HPLC-MS/MS方法测定脑组织内OEA的含量。给予OEA(5,10,40 mg/kg,ig)或OEA水解酶抑制剂URB597(1 mg/kg,ig),观察其对小鼠急性脑缺血再灌注损伤的影响。测定脑组织丙二醛(MDA)含量,超氧化物歧化酶(SOD)及过氧化氢酶(CAT)的活性。观察MK886对OEA抗脂质过氧化损伤的影响。结果脑缺血再灌注后6 h,损伤侧脑内OEA含量开始升高,再灌注后24 h升高最明显。脑缺血再灌注后给予OEA(40 mg/kg)或URB597(1 mg/kg)可减少神经功能缺失评分,减小脑梗死体积,减轻脑水肿程度。OEA可减少脑内MDA含量,增加抗氧化酶SOD的活性。OEA这一抗氧化作用可被MK886所取消。结论脑缺血再灌注可增加脑内OEA的含量,OEA通过激动PPARα,减轻脂质过氧化损伤发挥抗脑缺血再灌注损伤作用
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Last time updated on 16/06/2016