OBJECTIVE To study the effects of grape seed proanthocyanidins extracts(GSPE)on experimental type 2 diabetic nephropathy in rats and its possible mechanism.METHODS To establish type 2 diabetic rats model,male SD rats were fed on high fat diet for 4 weeks,and were injected with streptozotocin(STZ,0.01mol/L,30mg/kg·bw).Ninety-six diabetic rats were randomly divided into diabetes-vehicle group(DM control group),three GSPE-treated groups.Twenty-four normal rats were enrolled as the normal control group.The dose...