血管紧张素Ⅱ促高血压大鼠血管平滑肌细胞增殖机制的研究

被引:13
作者
李国红
丁金凤
张琪
机构
[1] 中国医学科学院阜外心血管病医院,中国医学科学院阜外心血管病医院,中国医学科学院阜外心血管病医院北京,北京,北京
关键词
血管紧张素Ⅱ; 碱性成纤维细胞生长因子; 血管平滑肌细胞; 高血压;
D O I
暂无
中图分类号
R544.1 [高血压];
学科分类号
摘要
本工作以培养的正常血压WKY大鼠主动脉平滑肌细胞(ASMC)为对照,探讨血管紧张素Ⅱ(AngⅡ)对培养的SHR ASMC促增殖的机制.结果表明:AngⅡ(10-9~10-6mol/L)对SHR和WKY大鼠的ASMC均有促增殖作用且随剂量增加其作用加强,但对SHR ASMC的促增殖效应明显高于WKY大鼠.应用碱性成纤维细胞生长因子(bFGF)单克隆抗体(A-bFGF)和反义bFGF mR-NA均可明显抑制AngⅡ促SHR ASMC的增殖效应.此外,基础状态下及AngⅡ(10-6mol/L)刺激8h后,SHR ASMC的bFGF基因表达均明显高于WKY大鼠.提示,AngⅡ的促细胞增殖作用部分是通过先诱发bFGF的产生而引起.
引用
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页码:50 / 53+76+90
页数:6
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