羟苯磺酸钙对糖尿病模型大鼠肾小球基底膜的影响研究

目的:观察羟苯磺酸钙对糖尿病(DM)模型大鼠肾小球基底膜超微结构的影响。方法:将30只大鼠行单肾切除术后取10只作为正常对照组(NC组),另外20只单次腹腔注射1%链脲佐菌素制作DM模型,造模成功后分为DM对照组和羟苯磺酸钙(DD)组;DM组和DD组分别灌胃给予蒸馏水和羟苯磺酸钙,12wk后观察各组大鼠肾脏超微结构的变化及24h内生肌酐清除率(CrCl)的变化。结果:12wk后,DD组内生CrCl水平明显高于DM组;电镜观察显示DD组肾小球毛细血管基底膜增厚程度小于DM组。结论:羟苯磺酸钙能改善DM模型大鼠肾脏超微结构,防止基底膜增厚,保护肾小球滤过屏障功能。

Efficacy of Calcium Dobesilate on Glomerular Basement Membrane in Diabetic Rats

OBJECTIVE:To investigate the effects of calcium dobesilate on the ultrastructure of glomerular basement membrane(GBM)in diabetic rats.METHODS:30rats underwent unilateral nephrectomy,of whom,10were assigned to the normal control group(group NC),another20were induced to diabetic models(DM)by intraperitoneal injection of1%STZ,the models which have finished were divided into DM control group and calcium dobesilate group(group DD),each group adminˉistered with distilled water and calcium dobesilate respectively,12weeks later,the change in the ultrastructure of kidneys and endogenous creatinine clearance rate(CrCl)in each group were observed.RESULTS:After12weeks,endogenous CrCl in group DD was significantly higher than that in group DM;Electron microscope showed that thickening of glomerular capillary basement membrane in group DD was less than that in group DM.CONCLUSION:Calcium dobesilate could improve the ulˉtrastructure in kidney of diabetic rats,prevent GBM thickening,and protect filtration barrier of renal glomerulus.