Markers of endothelial dysfunction and inflammation in type 1 diabetic patients with or without diabetic nephropathy followed for 10 years Association with mortality and decline of glomerular filtration rate

A. Astrup, L. Tarnow, L. Pietraszek, C.G. Schalkwijk, C.D.A. Stehouwer, H.H. Parving, P. Rossing

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Abstract

OBJECTIVE - We evaluated the association of biomarkers of endothelial dysfunction and inflammation with all-cause mortality and cardiovascular mortality and morbidity and decline in glomerular filtration rate (GFR) in type 1 diabetic patients. RESEARCH DESIGN AND METHODS - We prospectively followed 199 type 1 diabetic patients with diabetic nephropathy and 192 patients with persistent normoalbuminuria. Biomarkers were measured at baseline. RESULTS - We constructed two Z scores: the mean inflammatory Z score combined C-reactive protein, interleukin-6, soluble intercellular adhesion molecule (sICAM-1), and secreted phospholipase A2 and the mean Z score for endothelial dysfunction combined soluble vascular cell adhesion molecule 1, plasminogen activator inhibitor-1, and sICAM-1. The mean Z score of inflammatory biomarkers was associated with mortality and the combined end point in patients with diabetic nephropathy after multivariate adjustment (hazard ratio 1.7 [95% CI 1.1-2.6]; P = 0.025 and 1.5 [1.1-2.2]; P = 0.017). The mean Z score for endothelial dysfunction biomarkers was associated with mortality in a model adjusting for age and sex in patients with diabetic nephropathy (1.6 [1.0-2.3]; P = 0.031). The mean Z score for endothelial dysfunction correlated with decline in GFR (r = -0.243; P = 0.001); the correlation persisted after multivariate adjustment (coefficient -1.38 [95% CI -2.27 to -0.50]; P = 0.002). CONCLUSIONS - Mean Z scores of inflammatory biomarkers are significantly associated with all-cause mortality and cardiovascular morbidity and mortality in patients with nephropathy after multivariate adjustment. These data suggest that the high risk of cardiovascular disease in type 1 diabetes may be explained in part by inflammatory activity. Mean Z score of endothelial dysfunction correlated after multivariate adjustment with the rate of decline in GFR.
Original languageEnglish
Pages (from-to)1170-6
JournalDiabetes Care
Volume31
DOIs
Publication statusPublished - 1 Jan 2008

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