衣慧,王俊超,司静文,张玉芬,王宗仁,李军昌

• 1:第四军医大学西京医院
• 2:山东省寿光市中医院

摘要(Abstract)：

目的观察芪丹通脉片(QDTMT)对心肌梗死后气虚血瘀证大鼠缺血心肌血管新生的作用及对HIF-1α、VEGF表达的影响。方法以结扎SD大鼠左冠状动脉前降支,制备急性心肌梗死模型,随机分为假手术(Sham)组、梗死组(MI)组、MI+芪丹通脉片小剂量(MI+QDTMTL)组和MI+芪丹通脉片大剂量(MI+QDTMTH)组。术后24 h各组均用生理盐水配制成等体积药液灌胃,4周后动态评价各组大鼠气虚血瘀表征变化,采用免疫组化染色方法检测梗死边缘区CD31的表达,测定各组大鼠缺血心肌中新生血管数、微血管密度,于第7日、14日及28日时检测心梗边缘区HIF-1α和VEGFmRNA的表达。结果 (1)Sham组无气虚血瘀证相关表现,而MI组、MI+QDTMTL组和MI+QDTMTH组都有气虚血瘀的相关表现,且MI组表现最为明显。(2)MI+QDTMTL组和MI+QDTMTH组CD31的表达较MI组增强,且MI+QDTMTH组高于MI+QDTMTL组。(3)与MI组相比,MI+QDTMTL组和MI+QDTMTH组心梗边缘区新生血管数及微血管密度增加,且MI+QDTMTH组高于MI+QDTMTL组。(4)RT-PCR结果显示,心梗后7 d、14 d时MI+QDTMTL组和MI+QDTMTH组HIF-1αmRNA及VEGF mRNA相对表达量较MI组增高,28 d时MI+QDTMTL组和MI+QDTMTH组HIF-1αmRNA及VEGF mRNA相对表达量较MI组降低。结论 QDTMT能够改善心梗大鼠气虚血瘀的症状,增加心梗边缘区新生血管数和微血管密度,调控HIF-1α与VEGFmRNA的表达,为心梗后心功能的改善提供了新的治疗思路,其机制可能与活化HIF-1α信号调控HIF-1αmRNA及VEGF mRNA的表达有关。

关键词(KeyWords)： 芪丹通脉片;气虚血瘀;血管新生;缺氧细胞诱导因子-1α;血管内皮细胞生长因子

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(81072972)

作者(Author): 衣慧,王俊超,司静文,张玉芬,王宗仁,李军昌

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