罗格列酮对糖尿病大鼠肾脏色素上皮衍生因子、基质金属蛋白酶2及转化生长因子β1表达的影响

Effects of rosiglitazone on pigment epithelium-derived factor, matrix metalloproteinase-2, and transforming growth factor-β1 expressions in diabetic rats kidney

45只SD大鼠分为正常对照组、糖尿病对照组、糖尿病罗格列酮治疗组,实验12周末以免疫组织化学和RT-PCR检测肾脏色素上皮衍生因子（PEDF）、基质金属蛋白酶2（MMP-2）和转化生长因子β1（TGF-β1）的表达.结果 显示,罗格列酮治疗可降低糖尿病大鼠增高的肾脏重量/体重比值、肌酐、尿素氮、尿蛋白排泄率、甘油三酯水平（均P＜0.01）.罗格列酮增加糖尿病大鼠肾脏降低的PEDF、MMP-2蛋白表达,降低升高的TGF-β1蛋白表达（均P＜0.01）.PEDF mRNA的表达也呈相似趋势.提示罗格列酮可通过调节肾脏PEDF、MMP-2及TGF-β1的表达对肾脏起到保护作用.

Forty-five male SD rats were divided into normal group, diabetic control group, and rosiglitazone treatment diabetic group.By the end of 12 weeks, the expressions of pigment epithelium-derived factor（PEDF）, matrix metalloproteinase-2 （MMP-2）, and transforming growth factor-β1 （TGF-β1） in the kidney were determined by immunohistochemistry and RT-PCR.The results showed that rosiglitazone decreased the increased kidney weight/body weight ratio, serum creatinine, blood ureanitrogen, urinary albumin excretion, triglyceride levels in diabetic rats （all P〈0.01）.Rosiglitazone prevented the decreasing of protein expressions of PEDF and MMP-2 and the increasing of protein expression of TGF-β1 （all P〈0.01）.PEDF mRNA showed a similar change,suggesting that renoprotection of rosiglitazone on diabetic rats may be mediated through regulating the expressions of PEDF, MMP-2, and TGF-β1.