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血管紧张素Ⅱ受体拮抗剂对动脉球囊损伤后胶原表达的影响 被引量:2

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摘要 目的在建立兔髂动脉球囊损伤术后狭窄模型的基础上,观察伊贝沙坦对成形术局部血管壁超微结构及胶原表达的影响。方法取新西兰健康大白兔24只,随机分为对照组和伊贝沙坦组,术前6d开始给药至实验结束,对照组以等体积生理盐水灌胃,术后14,28d分批处死动物取标本,每组每批各6只。透射电镜观察髂动脉球囊损伤后血管壁超微结构的改变并测定新生内膜中Ⅲ型胶原的染色密度及VSMC增殖情况。结果伊贝沙坦组病变程度较轻,平滑肌细胞增生受到抑制,周围较少胶原纤维分布,其Ⅲ型胶原表达降低,随时间推移呈下降趋势。对照组可见外膜成纤维细胞向中膜迁移及已迁入内膜的肌成纤维细胞;周围大量胶原,呈分泌状态,而伊贝沙坦组则未发现此现象。伊贝沙坦组PCNA阳性细胞比率明显低于对照组,并随时间推移呈下降趋势。结论伊贝沙坦具有抑制球囊损伤后Ⅲ型胶原表达和平滑肌细胞增殖及保护内皮细胞的作用。
出处 《广东医学》 CAS CSCD 北大核心 2007年第11期1741-1743,共3页 Guangdong Medical Journal
基金 广东省医学科研基金立项项目(编号:A2003263)
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共引文献25

同被引文献13

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