人参总皂苷促进血管新生改善急性心肌梗死大鼠心功能

被引:62
作者
魏英 [1 ,2 ]
余丽梅 [1 ]
王钰莹 [1 ]
姚观平 [1 ]
潘丽 [1 ]
机构
[1] 遵义医学院附属医院贵州省细胞工程重点实验室
[2] 湖北医药学院附属东风医院实验中心
关键词
人参总皂苷; 急性心肌梗死; 心功能; 血管内皮生长因子; 碱性成纤维细胞生长因子; 血管新生; 心室重构;
D O I
暂无
中图分类号
R285.5 [中药实验药理];
学科分类号
100806 [中药药理学];
摘要
目的探讨人参总皂苷(total ginsenosides,TG)对大鼠急性心肌梗死(acute myocardial infarction,AMI)模型血管新生及心功能的影响。方法结扎♂SD大鼠冠状动脉前降支,制备AMI模型,随机分为模型组、TG低剂量和高剂量组(腹腔注射给予TG 20、40 mg·kg-1·d-1),假手术组与模型组给予等量生理盐水;彩色多普勒超声检测大鼠心功能;HE染色、Masson染色和免疫组化染色后观察心肌病理组织学变化和微血管密度;real-time PCR检测心肌组织中血管内皮生长因子(VEGF)和碱性成纤维细胞生长因子(bFGF)mRNA水平。结果 TG治疗35 d后,与模型组比较,TG高和低剂量组均能明显缩小左心室舒张末期内径、左心室收缩末期内径、舒张末期左室容积和收缩末期左室容积(P<0.05),明显增加左室射血分数、左室短轴缩短率(P<0.01)。TG组心肌梗死面积和纤维化改变明显减小,心室壁较厚;梗死区及其周边心肌组织CD31阳性细胞组成的微血管密度较模型组增高(P<0.05);缺血区心肌组织中VEGF和bFGF mRNA表达明显高于模型组(P<0.01)。结论 TG可明显促进急性心肌梗死大鼠心脏功能恢复和改善心室重构及梗死区心肌血液供应,作用机制与上调心肌组织VEGF和bFGF基因表达、促进血管新生而增加血液供应有关。
引用
收藏
页码:559 / 564
页数:6
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