羟苯磺酸钙对慢性肾衰模型大鼠血管活性物质的影响

Effects of Calcium Dobesilate on Vasoactive Substances in Rats with Chronic Renal Failure

目的:观察并探讨羟苯磺酸钙对慢性肾衰模型大鼠肾脏局部血管活性物质的影响及其作用机制。方法:将大鼠随机分为假手术组、模型组和羟苯磺酸钙治疗组,除假手术组外,其余2组行肾切除术建立肾衰模型,1wk后3组分别饮用水或羟苯磺酸钙灌胃,观察各组大鼠肾功能、肾脏局部血管活性物质含量及残肾组织病理的改变。结果:与模型组比较,羟苯磺酸钙组大鼠尿蛋白减少,肾功能改善,肾脏皮质匀浆中血栓素A2含量显著减少,残肾组织病理改变明显减轻。结论:羟苯磺酸钙可能通过降低肾衰模型大鼠肾脏局部血栓素A2含量而发挥肾脏保护作用。

OBJECTIVE:To observe and probe into the effects and mechanism of action of calcium dobesilate on the conˉtents of vasoactive substances in the remnant kidneys of rats with chronic renal failure.METHODS:The rats were randomly divided into sham operation,model and calcium dobesilate therapy group.Except the sham operation group,the rest two groups underwent nephrectomy and were established as chronic renal failure models.One week later either drink water or calcium dobesilate were irrigated into the stomachs of the rats in all three groups.And the effects of calcium dobesilate on renal function,contents of part vasoactive substances and the renal pathological changes of remnant kidney were examined.RESULTS:In calcium dobesilate therapy group,urine protein decreased,and the renal function improved,as compared with the model group.The contents of Thromboxane A 2 in the renal cortex significantly decreased and the pathological changes of remnant kidney lessen significantly.CONCLUSIONS:Calcium dobesilate may protect kidney by decreasing the content of Thromboxane A 2 in the remnant kidney.