罗格列酮对2型糖尿病大鼠肾脏脂联素受体1表达的影响

目的观察罗格列酮对2型糖尿病大鼠肾脏脂联素受体1(AdipoR1)表达的影响,探讨罗格列酮对2型糖尿病大鼠肾脏保护作用及机制。方法雄性Wistar大鼠随机分为A组(健康对照组)、B组(糖尿病组)和C组(糖尿病罗格列酮治疗组)。用高脂高糖饲料加小剂量链尿佐菌素制备2型糖尿病大鼠模型。造模成功后,C组给予罗格列酮(3mg·kg-1·d-1)灌胃12周。实验结束时,用免疫组织化学法测定肾脏组织中AdipoR1和转化生长因子-β1(TGF-β1)的表达,用反转录-聚合酶链反应(RT-PCR)法测定肾脏AdipoR1 mRNA表达。结果与A组比较,B组糖尿病大鼠血糖、血脂、血肌酐、尿素氮、尿白蛋白排泄率、肾脏指数和TGF-β1表达均显著升高(P<0.05),罗格列酮干预后,C组上述指标均较B组显著降低(P<0.05)。B组糖尿病大鼠肾组织AdipoR1 mRNA表达显著低于A组(P<0.01);罗格列酮干预后,C组大鼠AdipoR1 mRNA表达较B组显著升高(P<0.01)。免疫组织化学结果显示,B组糖尿病大鼠肾脏AdipoR1表达较A组显著降低(P<0.01),经罗格列酮干预后,C组大鼠肾脏AdipoR1表达较B组显著升高(P<0.01)。结论2型糖尿病大鼠肾脏AdipoR1表达降低。罗格列酮通过上调肾脏AdipoR1表达,降低TGF-β1表达,减轻肾脏肥大,产生肾脏保护作用。

Effect of rosiglitazone on expression of adiponenctin receptor 1 in kidney of type 2 diabetic rats

Objective To observe the effect of rosiglitazone on expression of adiponenctin receptor 1 (AdipoR1) in kidney of type 2 diabetic rats and to investigate the protective roles and mechanisms of rosiglitazone on kidney of type 2 diabetic rats. Methods Male Wistar rats were randomly divided into three groups: group A (the normal control), group B (diabetic rats) and group C (diabetic rats treated with rosiglitazone). Type 2 diabetes was induced by feeding with high-fat and high-sugar diet and a low-dose injecti...