人参皂苷Rg1对急性心肌梗死大鼠血管新生的作用

被引：32

作者：

金岩

刘闺男

机构：

[1] 中国医科大学附属第一医院循环内科

来源：

中国医科大学学报 | 2007年 / 05期

关键词：

人参皂苷Rg1; 急性心肌梗死; 血管生成; 血管内皮生长因子;

D O I：

暂无

中图分类号：

R285.5 [中药实验药理];

学科分类号：

摘要：

目的:研究人参皂苷Rg1对急性心肌梗死(AMI)大鼠血管新生的影响及其机制。方法:建立Wistar大鼠急性心肌梗死模型,分假手术组、急性心肌梗死对照组、人参皂苷Rg1低剂量治疗组(1mg/kg)和高剂量治疗组(5mg/kg),于术后3,7,10,14d测定血清心肌酶、心肌梗死面积、梗死区微血管密度,RT-PCR法检测梗死区心肌组织血管内皮生长因子(VEGF)mRNA的表达。结果:心肌梗死组织中各时段假手术组的微血管密度、VEGFmRNA表达均低于手术各组(P<0.01);治疗组心肌酶及心肌梗死面积明显降低(P<0.05),梗死区血管生成数量稳定持续增加,与对照组有显著差异(P<0.01);心肌梗死后VEGFmRNA表达随缺血时间的延长(3,7,10d组)有增高趋势,治疗组明显升高(P<0.01),14d时VEGFmRNA的增长出现停止或下降。结论:严重缺血急性期可刺激心肌组织产生大量的VEGF起自我保护作用,人参皂苷Rg1增加其表达,并可刺激心肌梗死区的血管生成。

引用

页码：517 / 519

页数：3

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