CRP and diabetes mellitus: Age, duration of DM, triglyceride (TG), total cholesterol (TC), low-density lipoprotein (LDL-C), creatinine, uric acid (UA), blood urea nitrogen (BUN), and C-reactive protein (CRP) were significantly higher in the DPN group (∗∗p < 0.01, ∗p < 0.05, compared with non-DPN, Mann-Whitney U test).