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Kidney Int Rep. 2019 Jun 21;4(10):1373-1386. doi: 10.1016/j.ekir.2019.06.005. eCollection 2019 Oct.

Systemic Inflammation Precedes Microalbuminuria in Diabetes.

Kidney international reports

Florian G Scurt, Jan Menne, Sabine Brandt, Anja Bernhardt, Peter R Mertens, Hermann Haller, Christos Chatzikyrkou,

Affiliations

  1. Clinic of Nephrology, Hypertension, Diabetes and Endocrinology, Health Campus Immunology, Infectiology, and Inflammation, Otto-von-Guericke University, Magdeburg, Germany.
  2. Nephrology Section, Hanover Medical School, Hanover, Germany.

PMID: 31701047 PMCID: PMC6829192 DOI: 10.1016/j.ekir.2019.06.005

Abstract

AIM: The aim of the case-control study was to investigate if serum biomarkers indicative of vascular inflammation and endothelial dysfunction can predict the development of microalbuminuria in patients with diabetes mellitus type 2.

METHODS: Among participants enrolled in the ROADMAP (Randomized Olmesartan And Diabetes MicroAlbuminuria Prevention) and observational follow-up (OFU) studies, a panel of 15 serum biomarkers was quantified from samples obtained at initiation of the study and tested for associations with the development of new-onset microalbuminuria during follow-up. A case-control study was conducted with inclusion of 172 patients with microalbuminuria and 188 matched controls. Nonparametric inferential, nonlinear regression, mediation, and bootstrapping statistical methods were used for the analysis.

RESULTS: The median follow-up time was 37 months. At baseline, mean concentrations of C-X-C motif chemokine ligand 16 (CXCL-16), transforming growth factor (TGF)-β1 and angiopoietin-2 were higher in patients with subsequent microalbuminuria. In the multivariate analysis, after adjustment for age, sex, body mass index, glycated hemoglobin, duration of diabetes, low-density lipoprotein (LDL), smoking status, blood pressure, baseline urine albumin-to-creatinine ratio (UACR), estimated glomerular filtration rate (eGFR), time of follow-up and cardiovascular disease, CXCL-16 (odds ratio [OR] 2.60, 95% confidence interval [CI] 1.71-3.96), angiopoietin-2 (OR 1.50, 95% CI 1.14-1.98) and TGF-β1 (OR 1.03, 95% CI 1.01-1.04) remained significant predictors of new-onset microalbuminuria (

CONCLUSION: In patients with type 2 diabetes, elevated plasma levels of CXCL-16, angiopoietin-2, and TGF-β1 are independently predictive of microalbuminuria. Thus, these serum markers improve renal risk models beyond established clinical risk factors.

© 2019 International Society of Nephrology. Published by Elsevier Inc.

Keywords: albuminuria; atheromatosis; cardiovascular disease; diabetic kidney disease; inflammation

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