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-  2018 

Parkin在糖尿病鼠肠缺血再灌注所致肠损伤易损性增加中的作用 Role of Parkin in the Increased Vulnerability of Intestinal Ischemia-Reperfusion Induced Intestinal Injury in Diabetic Mouse

Keywords: 肠缺血再灌注损伤,糖尿病,Parkin

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Abstract:

目的:探讨E3泛素(Ub)连接酶Parkin在糖尿病鼠肠缺血再灌注(IIR)所致肠损伤易损性增加中的作用。方法:将42只健康雄性C57BL/6L小鼠随机分为4组:假手术组(S组)、缺血再灌注组(IR组)、糖尿病+假手术组(DS组)、糖尿病+缺血再灌注组(DIR组)。通过链脲佐菌素(STZ)复制糖尿病小鼠模型,采用无创动脉夹夹闭肠系膜上动脉根部45min、恢复灌注2h的方法制备小鼠肠缺血再灌注损伤模型,2h后处死小鼠,留取小肠组织,观察组织病理改变行Chiu’s病理学损伤评分,HE染色观察小肠组织病理变化,检查小肠组织Parkin蛋白的表达情况。结果:与非糖尿病组(S组和IR组)相比,糖尿病组(DS组和DIR组)肠缺血再灌注后的肠损伤易损性增加,小肠组织的损伤更为严重,Chiu’s病理学损伤评分更高,Parkin蛋白表达也上调(P<0.05)。与假手术组(S组和DS组)相比,缺血再灌注组(IR组和DIR组)肠损伤易损性增加,小肠组织的损伤更严重,Chiu’s病理学损伤评分更高,Parkin蛋白表达上调(P<0.05)。结论:Parkin对糖尿病鼠IIR所致的肠损伤易损性增加有重要作用

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