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生长激素释放肽调控Akt信号通路对高糖诱导的胰岛β细胞凋亡的影响

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摘要 目的探讨生长激素释放肽对高糖诱导的胰岛β细胞凋亡的影响及机制。方法以NIT-1胰岛β细胞为研究对象,分为正常组(正常培养)、高糖组(高糖培养)、实验组(生长激素释放肽预处理后用高糖培养),用Akt信号通路抑制剂处理实验组细胞记为实验组+抑制剂,噻唑蓝(MTT)检测细胞增殖,流式细胞术检测细胞凋亡,Western印迹检测蛋白激酶B(Akt)、磷酸化(p)-Akt表达。结果高糖组OD值、p-Akt/Akt明显低于正常组(P<0.05),细胞凋亡率明显高于正常组(P<0.05);实验组OD值、p-Akt/Akt明显高于高糖组(P<0.05),细胞凋亡率明显低于高糖组(P<0.05)。结论生长激素释放肽能够抑制高糖诱导的胰岛β细胞凋亡,其作用机制可能与Akt信号通路有关。
出处 《中国老年学杂志》 CAS 北大核心 2019年第6期1436-1440,共5页 Chinese Journal of Gerontology
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