The association between interleukin-19 concentration and diabetic nephropathy.

BACKGROUND: Interleukin-19 (IL-19) is a newly discovered cytokine belonging to the Interleukin-10(IL-10) family. IL-19 have indispensable functions in many inflammatory processes and also can induce the angiogenic potential of endothelial cells. The purpose of present study was to investigate the relation of serum interleukin-19 (IL-19) levels with diabetic nephropathy (DN). METHODS: Two hundred study groups of patients with type 2 diabetes mellitus (T2DM) (109 males and 91 females) were recruited, included normoalbuminuria(n = 102), microalbuminuria(n = 72) and macroalbuminuria(n = 26) . The 50 healthy blood donors were enrolled for the control group. All subjects were assessed for: IL-19, High-sensitivity C-reactive protein (Hs-CRP), Cystatin C, urinary albumin excretion rate (UAE) and glycosylated hemoglobin A1c(HbA1c). RESULTS: The serum IL-19 levels in DN patients were found to be significantly higher compared to controls. IL-19 levels were significantly positively correlated with Hs-CRP, Cystatin C, UAE and HbA1c(r = 0.623, 0.611,0.591 and 0.526 respectively, P < 0.01). Multivariable logistic regression analysis showed IL-19 levels (P = 0.01) were found to be independently associated with patients with DN. CONCLUSIONS: IL-19 is significantly positive correlated with UAE and Cystatin C. IL-19 may play an important role that contributes to the progression of diabetic nephropathy.

Interleukin-19 and angiopoietin-2 can enhance angiogenesis of diabetic complications.

This study was to investigate the role of interleukin-19 (IL-19) and angiopoietin-2 (Ang-2) in angiogenesis of type 2 diabetes (T2DM). In 240 patients with T2DM, IL-19 and Ang-2 levels were higher, IL-19 was positively correlated with Ang-2. IL-19 and Ang-2 might be involved in angiogenesis of T2DM complications.