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American Diabetes Association, Diabetes, Supplement_1(67), 2018

DOI: 10.2337/db18-2360-pub

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DXA-Determined Visceral Adipose Tissue Is Associated with Cardiometabolic Risk Factors Even in Healthy Young Adults from the Nutritionists’ Health Study—NutriHS

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Background: Association of excessive visceral adipose tissue(VAT) with cardiometabolic risk in middle-aged adults has been recognized. VAT determined by dual-x-ray absorptiometry(DXA) is an accurate measurement but its usefulness for early detection of cardiovascular risk at a younger age is less investigated. The NutriHS has examined several cardiometabolic markers in undergraduates and graduates from Nutrition courses in Brazil. Aim: To evaluate whether DXA-VAT is associated with cardiometabolic markers in young adults with a normal cardiovascular risk profile. Methods: In this cross-sectional analysis, 177 NutriHS participants(90% women, 70% Caucasians) underwent clinical examination, body composition(iDXALunarGE®) and blood sampling. Associations of DXA-VAT(exposure) with blood pressure(BP), waist and neck circumferences(WC and NC), BMI, triglycerides(TG), HDL-c, non-HDL-c, uric acid, fasting glucose, insulin, HOMA-IR and inflammatory biomarkers(outcomes) were tested by multiple linear regression, adjusted according to the directed acyclic graphs. Results: Mean values of age, BMI and FG were 25.8±8.0years, 23.5±4.3kg/m2 and 83±9mg/dL, respectively. DXA-VATs were 693.6±640.3g for men and 235.7±322.6g for women. In regression models, DXA-VAT was directly associated with NC(r2 0.62, p<0.001), non-HDL-c(r2 0.21, p=0.022), TG(r2 0.39, p<0.001), uric acid(r2 0.34, p<0.001), E-selectin(r2 0.11; p=0.004), leptin(r2 0.10, p=0.006), insulin(r2 0.26; p=0.029) and HOMA-IR(r2 0.27; p=0.024), and inversely with HDL-c(r2 0.22, p=0.039) after adjustments, but not with BP, FG, interleukins and TNF-a. Conclusion: Such associations of DXA-VAT with traditional and novel risk markers suggest that this method may be useful to identify those at an increased risk even in a selected sample of low-risk healthy individuals. Our follow-up is necessary to confirm the hypothesis raised in this study. Disclosure A.M.M. Valente: None. B. Almeida-Pititto: None. A.A. Ferraro: None. L. Folchetti: None. I.T. Silva: None. S.R.G. Ferreira: None.