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坎地沙坦抗高糖诱导大鼠血管平滑肌细胞增殖作用

DOI: 10.11847/zgggws2015-31-09-18, PP. 1170-1172

Keywords: 高糖,坎地沙坦(Cand),A7r5细胞,细胞增殖,丝裂原活化蛋白激酶(MAPK)

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Abstract:

?目的探讨坎地沙坦(Cand)对高糖诱导的大鼠胸主动脉平滑肌细胞株A7r5增殖的影响及作用机制。方法体外培养A7r5细胞,分为对照组、高糖组、Cand(低、中、高)剂量组;通过CCK-8法检测细胞增殖活性,流式细胞术检测细胞周期,Westernblot法检测p-c-Raf、p-MEK1/2、p-ERK1/2蛋白表达水平。结果与对照组比较,高糖组A7r5细胞增殖活性明显增强,细胞周期S期比例[(30.503±1.521)%]明显增加(P<0.01),A7r5细胞内p-c-Raf、p-MEK1/2、p-ERK1/2蛋白表达水平[分别为(1.060±0.087)、(1.155±0.064)、(1.924±0.065)]明显升高(P<0.05);与高糖组比较,Cand高剂量组A7r5细胞增殖活性下降,细胞周期S期比例[(21.677±1.690)%]下降(P<0.01),A7r5细胞内p-c-Raf、p-MEK1/2、p-ERK1/2蛋白表达水平[分别为(0.658±0.039)、(0.821±0.049)、(0.795±0.028)明显下降(P<0.01)。结论坎地沙坦对高糖诱导的A7r5细胞增殖具有抑制作用,其机制可能与抑制细胞周期及信号传导通路上3种蛋白磷酸化有关。

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