Waist-to-height ratio is independently associated with chronic kidney disease in overweight type 2 diabetic patients

Blaslov, Kristina and Bulum, Tomislav and Duvnjak, Lea (2015) Waist-to-height ratio is independently associated with chronic kidney disease in overweight type 2 diabetic patients. Endocrine Research, 40 (4). pp. 194-198. ISSN 0743-5800

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Abstract

OBJECTIVE: Chronic kidney disease (CKD) is one of the most serious complications in obesity-induced type 2 diabetes mellitus (T2DM). Body mass index (BMI), waist-to-hip ratio (WHR), waist circumference (WC) and waist-to-height ratio (WHtR) are recognised as sensitive obesity measures. We aimed to investigate the association of BMI, WC, WHR and WHtR with CKD prevalence in overweight T2DM patients. ----- DESIGN, SUBJECTS AND METHODS: We obtained 125 overweight T2DM patients coming for their in-patient annual visit. Metabolic profiles and anthropometric indices were measured and calculated. Urine albumin excretion (UAE) was determined as the mean of 24-h urine from two consecutive days. Serum creatinine was measured from fasting blood sample in order to calculate the estimated glomerular filtration rate (eGFR) using the Chronic Kidney Disease Epidemiology Collaboration formula. Patients were divided into two groups according to CKD prevalence. ----- RESULTS: Thirty-six (28.8%) patients met diagnostic criteria for CKD. The WHtR and WC were higher in the group with CKD. WHtR correlated positively with UAE (r = 0.828, p < 0.001) and negatively with eGFR (r = -0.262, p = 0.015). No significant correlation was observed with WC in relation to UAE (p = 0.335) nor eGFR (p = 0.121). WHtR yielded the significant and great OR in association with nephropathy after adjustment for all confounding risk factors. ----- CONCLUSION: WHtR might be of a greater importance in association to CKD compared to other anthropometric parameters that indicate central obesity. Whether it is a best measure of central obesity and its exact role in CKD pathology is yet to be investigated.

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