磷酸化丝氨酶/苏氨酸蛋白激酶B与吲哚美辛诱导胃黏膜损伤的关系探讨

目的 探讨抗凋亡信号蛋白磷酸化丝氨酸,苏氨酸蛋白激酶B(AKT)表达水平与吲哚美辛诱导胃黏膜损伤的关系.方法 采用免疫印迹法检测吲哚美辛处理后的C57BL/6小鼠胃黏膜组织和大鼠胃黏膜细胞(RGM-1)中抗凋亡信号蛋白磷酸化AKT表达水平的变化.结果 吲哚美辛处理后的小鼠胃黏膜组织呈现典型的胃溃疡病理形态变化;和对照组相比,经吲哚美辛处理后的小鼠胃黏膜组织和大鼠胃黏膜细胞RGM-1中抗凋亡信号蛋白磷酸化AKT表达水平均明显降低.结论 抗凋亡信号蛋白磷酸化AKT表达水平降低可能是吲哚美辛诱导的胃黏膜损伤的一种新的机制.

The association of the expression level of anti-apoptosis protein p-AKT and gastric mucosal injury induced by indomethacin in mice

Objective To investigate the association of the expression level of anti-apoptosis protein p-AKT and gastric mucasal injury induced by indomethacin in mice.Methods The cytotoxicity induced by indomethacin was measured by LDH assay.The p-AKT expression levels were measured in the gastric mucosal tissues from C57BL/6 mice and rat gastric mucosal (RGM-1) cell lines treated with indomethacin lay western blotting.Results The cytotoxicity induced by indomethacin was in a dose dependent manner.Compared with the control,a typical histological appearance of gastric ulcer was observed in the gastric mucosa of in domethacin-administered mice;p-AKT protein expression in the gastric mucosa of mice and RGM-1 cell lines was decreased after treated with indomethacin.Conclusion The reduction of Anfi-apoptesis protein p-AKT expression may be a new mechanism for the gastric mucosal injury induced by indomethacin.