通心络胶囊对大鼠急性缺血再灌注损伤心肌的保护作用及信号转导被引量：11

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摘要目的:探讨通心络胶囊是否对缺血再灌注损伤的大鼠心肌有保护作用,以及保护的信号机制。方法:大鼠随机分为6组(n=6)(1)对照组;(2)缺血-再灌注组(IR组);(3)通心络组1(小剂量通心络,0.1 g/(kg.d));(4))通心络组2(大剂量通心络,0.5 g/(kg.d));(5)大剂量通心络+LY294002组;(6)大剂量通心络+PD98059组。LY294002,PD98059分别是PI3K/Akt、ERK1/2信号通路阻断剂,摘取大鼠心脏后进行离体Langendorff灌流,多导生理记录仪分别记录心率、心律、左室收缩末压(LVSP)和左室内压力的变化速率(+dp/dtmax);灌流液检测LDH、CPK、MDA水平及SOD活力。氯化三苯基四氮唑(TTC)溶液染色法测定心肌梗死范围,心室肌检测iNOSmRNA和eNOSmRNA表达。结果:IR组心律失常较对照组增多,LVSP和+dp/dtmax明显下降,心肌酶升高,心肌iNOSmRNA和MDA增加,而心肌eNOSmRNA和SOD减少;通心络能使IR大鼠心功能明显改善,心梗范围缩小,心肌eNOSmRNA和SOD增加,而两信号通路阻断剂均能阻断通心络的部分作用。结论:通心络对缺血再灌注损伤心肌有保护作用;可能与激活PI3K/Akt、ERK1/2信号通路有关。

作者李菊香万磊夏子荣苏海肖鲁闽吴延庆吴清华程晓曙

机构地区南昌大学第二附属医院心内科

出处《中成药》 CAS CSCD 北大核心 2010年第4期562-565,共4页 Chinese Traditional Patent Medicine

基金江西省自然基金资助项目(2007GQY1210)

关键词心肌损伤缺血再灌注大鼠通心络信号通路氧化应激

分类号 R285.6 [医药卫生—中药学]

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参考文献1

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