伊贝沙坦对链脲佐菌素诱导的糖尿病大鼠肾脏肥大的影响  

Influence of irbesarten on renal hypertrophy in streptozotocin-induced diabetic rats

作　　者：刘必成[1] 罗冬冬[1] 张晓良[1] 孙子林[1] 马坤岭[1] 周秋根[1] 

机构地区：[1]东南大学肾脏病研究所

出　　处：《中国病理生理杂志》2004年第11期2086-2089,共4页Chinese Journal of Pathophysiology

基　　金：江苏省科技厅自然科学基金资助项目 (No .7790 0 0 2 4 6 ) ;江苏省卫生厅医学重点人才基金资助项目

摘　　要：目的 :探讨新型血管紧张素II受体拮抗剂伊贝沙坦 (Irb)对链脲佐菌素 (STZ)诱导的糖尿病大鼠肾脏肥大的影响。方法 :SD大鼠随机分为 3组 :正常对照组 (N组 ,n =7) ,糖尿病肾病组 (DN组 ,n =6 )和伊贝沙坦治疗组 (DNI组 ,n =7)。大鼠单侧肾切除后 ,腹腔注射STZ诱导糖尿病模型。于第 4、8、12周分别测血糖 (BG)、体重(BW)、尿白蛋白排泄 (Ualb)、2 4h尿蛋白 (2 4hUpro)定量 ,12周实验结束时测肌酐清除率 (Ccr)、肾重 (KW )、肾脏肥大指数 (KW/BW)、肾组织总蛋白含量 (RTP)、肾小球面积 (AG)和体积 (VG)、肾小球毛细血管基底膜 (GBM)厚度等改变。结果 :DN组和DNI组间BG差异无显著 (P >0 0 5 )。Irb可明显降低糖尿病大鼠Ualb、2 4hUpro排泄 ,抑制Ccr的增高(P <0 0 1) ;Irb可显著抑制糖尿病大鼠KW、KW/BW、RTP、AG、VG 的增加 (P <0 0 5或P <0 0 1)和GBM的增厚 (均为P <0 0 1)。结论 :糖尿病大鼠早期应用Irb可减轻尿蛋白排泄 。AIM: To investigate the influence of irbesartan (Irb), a new angiotensin II receptor 1 antagonist, on renal hypertrophy in streptozotocin (STZ)-induced diabetic rats. METHODS: Sprague-Dawley (SD) rats were randomly divided into three groups: normal group (Group N, n=7), diabetic group (Group DN, n=6) and irbesartan treated group (Group DNI, n=7). In the experimental group, after the rats subjected to uninephrectomy, STZ was given by peritoneally injection at bolus dose of 50 mg/kg to induce diabetes. Blood glucose (BG), body weight (BW), urinary albumin excretion (Ualb), 24 hour proteinuria (24 h Upro) were measured at week 4, 8, 12, respectively. By the end of experiment at week 12, creatinine clearance (Ccr), kidney weight (KW), indicator of renal hypertrophy (KW/BW), renal total protein content (RTP), glomerular area (AG) and glomerular volume (VG) as well as glomerular basement membrane (GBM) were determined by semi-quantitative pathology technique. RESULTS: It was showed that there was no significant difference in BG between group DN and DNI, while Irb significantly reduced the increasing of Ualb, 24 h Upro in diabetic rats compared to control group (P<0.01, respectively). Furthermore, Irb markedly inhibited the increasing of KW, KW/BW, RTP, A_G, V_G in diabetic rats (P<0.05, P<0.01, respectively). Of interest, Irb significantly prevented the increasing of GBM in diabetic rats. CONCLUSION: Irb exerts its early renal protective action by reducing proteinuria and inhibiting renal hypertrophy as well as the thickening of GBM. [

关 键 词：伊贝沙坦 糖尿病肾病 肾脏肥大 

分 类 号：R363[医药卫生—病理学]