PURPOSE: To determine whether para- and perirenal fat ultrasonographic thickness (PFUT) is related to increased urinary albumin excretion and whether PFUT is an independent indicator of early kidney damage in obese subjects. METHOD: Sixty-seven nonhypertensive, nondiabetic obese patients and 34 age- and sex-matched normal healthy volunteers were involved in this study. Clinical characteristics, blood biochemistry, PFUT, and urinary albumin/creatinine ratio (ACR) of the subjects were measured. The intraoperator and interoperator coefficient of variation was 5.6 and 3.2 %, respectively. RESULTS: ACR and PFUT were significantly higher in obese patients than those of normal healthy volunteers. PFUT was higher in obese patients with microalbuminuria than those with normoalbuminuria. Correlation analysis showed PFUT had a positive correlation with body mass index (BMI, r = 0.677, P < 0.01), waist circumference (WC, r = 0.686, P < 0.01), plasma free fatty acids (FFAs, r = 0.589, P < 0.01), and ACR (r = 0.610, P < 0.01). ACR had a positive correlation with BMI (r = 0.444, P < 0.01), WC (r = 0.440, P < 0.01), and plasma FFAs (r = 0.496, P < 0.01). Multivariate regression analyses showed that ACR could be predicted by PFUT. CONCLUSIONS: PFUT may be an independent predictor of early kidney damage in nonhypertensive, nondiabetic obese patients, and PFUT could be a useful tool for the assessment of visceral fat and early kidney damage in obese patients.
PURPOSE: To determine whether para- and perirenal fat ultrasonographic thickness (PFUT) is related to increased urinary albumin excretion and whether PFUT is an independent indicator of early kidney damage in obese subjects. METHOD: Sixty-seven nonhypertensive, nondiabetic obesepatients and 34 age- and sex-matched normal healthy volunteers were involved in this study. Clinical characteristics, blood biochemistry, PFUT, and urinary albumin/creatinine ratio (ACR) of the subjects were measured. The intraoperator and interoperator coefficient of variation was 5.6 and 3.2 %, respectively. RESULTS: ACR and PFUT were significantly higher in obesepatients than those of normal healthy volunteers. PFUT was higher in obesepatients with microalbuminuria than those with normoalbuminuria. Correlation analysis showed PFUT had a positive correlation with body mass index (BMI, r = 0.677, P < 0.01), waist circumference (WC, r = 0.686, P < 0.01), plasma free fatty acids (FFAs, r = 0.589, P < 0.01), and ACR (r = 0.610, P < 0.01). ACR had a positive correlation with BMI (r = 0.444, P < 0.01), WC (r = 0.440, P < 0.01), and plasma FFAs (r = 0.496, P < 0.01). Multivariate regression analyses showed that ACR could be predicted by PFUT. CONCLUSIONS: PFUT may be an independent predictor of early kidney damage in nonhypertensive, nondiabetic obesepatients, and PFUT could be a useful tool for the assessment of visceral fat and early kidney damage in obesepatients.
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