2008256 Role of heparanase in the pathogenesis of proteinuria in diabetic nephropathy rats.TANG Lin(唐琳),et al.Dept Nephrol,1st Affili Hosp,Zhengzhou Univ,Zhengzhou 450052.Chin J Nephrol 2008;24(4):277-281.Objective To observe the expression of heparanase (HPA)in kidney of diabetic nephropathy(DN)rats and to investigate the role of HPA in the pathogenesis of proteinuria in DN rats.Methods DM rat models induced