Abstract
Background
Experimental studies have shown that adiponectin has antiproteinuric and nephroprotective effects. The purpose of the study was to assess the value of plasma adiponectin as a predictor of proteinuria in type 2 diabetes (T2D) patients.
Methods
In this one-year prospective follow-up study, we included T2D patients with positive visual test for microalbuminuria (Micral) and negative visual test for proteinuria. Exclusion criteria were: glomerular filtration ratio (GFR) < 30 ml/min, acute infection/inflammation, uncontrolled hypertension, and atherosclerotic complications. The main outcome measure was the change in urinary albumin/creatinine ratio (UACR) after 1 year follow-up (Δ UACR).
Results
Fifty-six patients (66% males) completed the study. Their initial mean UACR was 81.58 ± 26.42 mg/g and mean GFR was 81.15 ± 3.96 ml/min. At baseline, simple regression disclosed significant correlations between UACR and plasma adiponectin (r = 0.54, P = 0.00002) and GFR (r = −0.28, P = 0.03); in multiple regression analysis, plasma adiponectin remained the only predictor of UACR (P = 0.00007). Baseline plasma adiponectin was significantly correlated to body mass index (r = −0.28, P = 0.04), waist circumference (r = −0.27, P = 0.05), HDL cholesterol (r = 0.35, P = 0.01), and LDL cholesterol (r = 0.27, P = 0.04). Baseline plasma adiponectin significantly correlated in simple (r = −0.38, P = 0.004) and multiple regression (P = 0.04) to Δ UACR. When patients were divided according to Δ UACR in nonprogressors (Δ UACR < 0) and progressors (Δ UACR > 0), logistic regression showed that baseline GFR (OR = 1.04, CI95%: 1.00–1.09, P = 0.04) and plasma adiponectin (OR = 1.16, CI95%: 1.02–1.32, P = 0.02) were the only factors that predicted whether the patient would be a progressor or not.
Conclusion
In T2D patients, lower plasma adiponectin levels seem to be predictive of increased UACR.
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This work was funded by CNCSIS Romania Idei 1167/2008 grant.
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Kacso, I., Lenghel, A., Bondor, C.I. et al. Low plasma adiponectin levels predict increased urinary albumin/creatinine ratio in type 2 diabetes patients. Int Urol Nephrol 44, 1151–1157 (2012). https://doi.org/10.1007/s11255-011-0064-1
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DOI: https://doi.org/10.1007/s11255-011-0064-1