Relevance research between blood inflammatory factor and urinary microalbumine in type 2 diabetic patients

Objective To investigate the significance of changes of serum high-sensitivity C-reactive protein (hs-CRP),tumor necrosis factor-alpha (TNF-α),interleukin 6 (IL-6) and urinary microalbumine levels in patients with diabetic kidney disease.Methods Serum hs-CRP,TNF-α,IL-6 and urinary microalbumine levels were measured with RIA in 60 type 2 diabetic patients and 20 controls.The 60 diabetic patients were divided into three groups based on urine albumin excretion rate.Group A:without alblminuria ( UAER ＜ 20 μg/ min,n =20 ) ; Group B:micro-albuminuria ( UAER ＜ 200 μg/min,n =20 ) ; Group C:macro-albuminuria ( UAER ＞ 200 μg/min,n =20 ).The serum levels of hs-CRP,TNF-α,IL-6 of patients in the four groups were measured.Results The serum levels of hs-CRP,TNF-α,IL-6 of patients in the healthy group were ( 1.21 ± 0.87 ) mg/L,( 1.27 ± 0.93 ) ng/L and ( 4.31 ± 1.72 ) ng/L,in the nonalbuminuria group were ( 2.31 ± 1.07 ) mg/L,( 1.95 ± 1.34 ) ng/L and ( 5.79 ± 1.68 ) ng/L,in the microalbuminuria group were ( 3.47 ± 1.25 ) mg/L,(2.86 ± 1.26) ng/L,(7.13 ± 1.57 ) ng/L,in the macroalbuminuria group were (4.83 ± 1.47 ) mg/L,(4.03 ±1.43)ng/L,(9.14 ±2.43)ng/L Serum levels of hs-CRP,TNF-α and IL-6 were significantly higher in all the patients with type 2 diabetes than those in the control group (P ＜ 0.01 ).Serum levels of hs-CRP,TNF-α and IL-6 were significantly higher in type 2 diabetic patients with microalbuminuria than those in patients without albuminuria (P ＜0.05).Serum levels of hs-CRP,TNF-α and IL-6 were significantly higher in diabetic patients with macroalbuminuria than those in patients with micrealbuminuria (P ＜ 0.01 ).The levels of hs-CRP,TNF-αand IL-6 were positively related to the urinary microalbumine levels ( rs =0.67,0.64,0.75,P ＜ 0.01 ).Conclusion Determination of serum hs-CRP,TNF-α and IL-6 levels might be helpful for early detection of diabetic kidney disease and monitoring the progress of the disease process. Key words: Type 2 diabetes ;  High-sensitivity CRP;  Tumor necrosis factor-α ;  Interleukin-6 ; Urinary microalbumine