Objective:To explore the clinical significance of interleukin 6(IL 6) in pathogenesis of diabetic nephropathy by comparing the plasma and urinary level of IL 6 in patients with type 2 diabetes mellitus(DM).Methods:The plasma and urinary level of IL 6 were measured with radioimmunoassay in 20 normal controls(NC group) and 45 cases of type 2 DM,including 23 cases without albuminuria(DSM group) and 22 cases with trace albuminuria(EDN group).Results:(1)The plasms and urinary level of IL 6 markly elevated in SDM group(P