Objective To observe the effect of puerarin on endothelin of streptozotocin - induced diabetic rats. Methods Diabetic nephropathy rats were induced by intraperitoneal injection of STZ. Rats were divided into normal control group, model group, and Puerarin group for 12 weeks. During and after the treatment , the general state, blood glucose levels, blood urea nitrogen, serum creatinine, urinary albumin excretion rate of the 24 - hours, and clearance rate of creatinine, as well as endothelin were detected by immunohistochemical technology in diff...