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腺病毒介导肝细胞生长因子对猪梗死后心衰改善作用研究

【作者】 王伟

【导师】 杨志健;

【作者基本信息】 南京医科大学 , 心血管内科, 2006, 硕士

【摘要】 第一部分 HGF促进猪心肌梗死后血管新生和心功能改善 目的:研究经冠脉转染腺病毒(adenovirus,Ad5-)携带人肝细胞生长因子(hepatocyte growth factor,HGF)对猪心肌梗死后心衰的改善作用。 方法:12只苏中幼猪,随机分成2组,每组6只,分别为转染Ad5-HGF组(治疗组)和转染未携带肝细胞生长因子的腺病毒载体(null- Ad5)组(对照组)。结扎前降支形成心肌梗死四周后,经冠脉转染Ad5-HGF和null- Ad5时及转染后三周行冠脉造影和门控心肌灌注显像,评价侧枝循环形成程度(Rentorp法),心肌灌注及心功能的变化,以ELISA法检测肝细胞生长因子蛋白表达;免疫组化检测基因导入后,有平滑肌细胞包裹的功能血管生成情况。结果:(1) 经冠脉转染Ad5-HGF后心肌高度表达人HGF蛋白(t=30.685,p<0.01)。(2) 对照组4周时左室射血分数(LVEF)为(32.3±2.0)%,7周时为(30.4±2.8)%,治疗组4周时为(32.1±1.7)%,7周时为(43.9±4.3)%,治疗组与对照组4周时比较,无统计学差异(t=-0.202,p>0.05)。而治疗组7周与4周比较,LVEF值有较明显增加(t=-7.934,p<0.01),治疗组与对照组7周时比较,LVEF亦有明显增加(t=6.514,p<0.01);治疗组心肌灌注显像较前明显改善。(3) 治

【Abstract】 PART 1. Induction of collateral artery growth and improvement of heart function by hepatocyte growth factor gene transfer via noninfarct-related vessel effectively treats postinfarction heart failureObjective: To study the amelioration effect of postinfarction heart failure with Ad5-HGF (adenovirus5-mediated human hepatocyte growth factor) transfer in the swine model.Methods: Twelve SuZhong young swine were randomly divided into two groups, Ad5-HGF group (n=6) and null- Ad5 group (n=6). Four weeks after left anterior descending coronary artery (LAD) ligation, Ad5-HGF was transferred into the MI (myocardial infarction) myocardium via right coronary artery. Coronary angiography and Gate cardiac perfusion imaging were performed at the end of four and seven weeks after LAD ligation, respectively, to evaluate the collateral artery growth (Rentrop) and cardiac perfusion. Then all animals were sacrificed, the expression of HGF and α-smooth muscle actin (α-SMA) were

  • 【分类号】R542.22
  • 【下载频次】75
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