罗格列酮对大鼠胸主动脉球囊损伤后内皮再生和内膜增生的影响The effects of rosiglitazone on the endothelial regeneration and neointimal formation of balloon injured rat aortic
姚园,江洪,徐超,王腾
摘要(Abstract)：
目的探讨罗格列酮(rosiglitazone,RSG)对血管损伤后内皮再生和内膜增生的影响。方法制备大鼠胸主动脉球囊损伤模型,将SD大鼠随机分为RSG组、对照组和假手术组,于术后第7天和第14天处死动物。分别进行伊文思蓝染色观察内皮覆盖情况,细胞核增殖抗原(PCNA)免疫组化染色和组织形态学定量分析,并测量损伤后14 d时各组血清一氧化氮(NO)含量。结果RSG 7 d组和14 d组的再生内皮覆盖率分别为38.2%和75.2%,均较对照组(32.4%和60.4%)显著增加(P<0.05和P<0.01),且RSG 14 d组血清中的NO含量较对照组升高。球囊损伤后7 d内膜开始有少量增生,14 d时形成明显的新生内膜。RSG使损伤后14 d形成的新生内膜显著减少,内膜面积与中膜面积的比值(IA/MA)较对照组降低60.9%。与对照组比较,RSG 7 d组和14 d组新生内膜内的PCNA阳性表达指数均显著减少。结论RSG可以促进大鼠胸主动脉球囊损伤处的内皮再生,并减少新生内膜的形成。
关键词(KeyWords)： 罗格列酮;血管内膜;内皮
基金项目(Foundation):
作者(Author): 姚园,江洪,徐超,王腾
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