Paola Andreozzi1, Walter Verrusio2, Giovanni Viscogliosi1, Maria Luna Summa1, Nicolò Gueli3, Mauro Cacciafesta3, Carlina V Albanese4. 1. Predictive Medicine Unit, Department of Cardiovascular, Respiratory, Nephrologic, Anesthesiologic and Geriatric Sciences, "Sapienza" University of Rome, Rome, Italy. 2. Department of Cardiovascular, Respiratory, Nephrologic, Anesthesiologic and Geriatric Sciences, "Sapienza" University of Rome, Rome, Italy. Electronic address: walter.verrusio@uniroma1.it. 3. Department of Cardiovascular, Respiratory, Nephrologic, Anesthesiologic and Geriatric Sciences, "Sapienza" University of Rome, Rome, Italy. 4. Department of Radiologycal Sciences, Oncology and Anatomo Pathology, "Sapienza" University of Rome, Rome, Italy.
Abstract
OBJECTIVE: The aim of this study was to explore the relationship between 25-hydroxyvitamin D (25[OH]D) serum concentrations and body fat distribution in a sample of postmenopausal women. METHODS: We enrolled sixty-two postmenopausal women; 25(OH)D serum concentrations, serum intact parathyroid hormone, blood analyses, and anthropometric measurements were carried out. Body fat composition was evaluated by dual-energy X-ray absorptiometry. Insulin resistance was estimated by homeostatic model assessment of insulin resistance (HOMA-IR) calculation. RESULTS: Low levels of vitamin D (<30 ng/mL) were found in 77.4% of the population studied. There was a correlation (P < 0.0001) between 25(OH)D and waist circumference (r = -0.543), android fat to gynoid fat (A/G) ratio (r = -0.554), high-density lipoprotein cholesterol (r = 0.498), and HOMA-IR (r = -0.520). A/G fat ratio (B = -34.90; 95% confidence interval [-55.30, -14.1]; P = 0.019), HOMA-IR (B = -3.17; 95% confidence interval [-5.99, -0.351]; P = 0.028), and high-density lipoprotein cholesterol (B = 0.361; 95% confidence interval [0.033, 0.698]; P = 0.032), were found to be independent predictors of lower 25(OH)D by multilogistic regression analysis. Except for waist circumference, both these results were maintained when correlations were adjusted for age, onset of menopause, serum intact parathyroid hormone, and medications, and when body mass index was added as covariate. CONCLUSIONS: Vitamin D deficiency and insufficiency are common conditions. A/G ratio appeared to be associated with 25(OH)D concentrations and it is well-known that the android disposition of body fat is more closely associated with the onset of metabolic syndrome. Longitudinal studies are needed to better characterize the direction and the causal links of this association.
OBJECTIVE: The aim of this study was to explore the relationship between 25-hydroxyvitamin D (25[OH]D) serum concentrations and body fat distribution in a sample of postmenopausal women. METHODS: We enrolled sixty-two postmenopausal women; 25(OH)D serum concentrations, serum intact parathyroid hormone, blood analyses, and anthropometric measurements were carried out. Body fat composition was evaluated by dual-energy X-ray absorptiometry. Insulin resistance was estimated by homeostatic model assessment of insulin resistance (HOMA-IR) calculation. RESULTS: Low levels of vitamin D (<30 ng/mL) were found in 77.4% of the population studied. There was a correlation (P < 0.0001) between 25(OH)D and waist circumference (r = -0.543), android fat to gynoid fat (A/G) ratio (r = -0.554), high-density lipoprotein cholesterol (r = 0.498), and HOMA-IR (r = -0.520). A/G fat ratio (B = -34.90; 95% confidence interval [-55.30, -14.1]; P = 0.019), HOMA-IR (B = -3.17; 95% confidence interval [-5.99, -0.351]; P = 0.028), and high-density lipoprotein cholesterol (B = 0.361; 95% confidence interval [0.033, 0.698]; P = 0.032), were found to be independent predictors of lower 25(OH)D by multilogistic regression analysis. Except for waist circumference, both these results were maintained when correlations were adjusted for age, onset of menopause, serum intact parathyroid hormone, and medications, and when body mass index was added as covariate. CONCLUSIONS:Vitamin Ddeficiency and insufficiency are common conditions. A/G ratio appeared to be associated with 25(OH)D concentrations and it is well-known that the android disposition of body fat is more closely associated with the onset of metabolic syndrome. Longitudinal studies are needed to better characterize the direction and the causal links of this association.
Authors: Roland N Dickerson; Jonathan R Van Cleve; Joseph M Swanson; George O Maish; Gayle Minard; Martin A Croce; Rex O Brown Journal: Burns Trauma Date: 2016-10-17
Authors: Zaki K Hassan-Smith; Carl Jenkinson; David J Smith; Ivan Hernandez; Stuart A Morgan; Nicola J Crabtree; Neil J Gittoes; Brian G Keevil; Paul M Stewart; Martin Hewison Journal: PLoS One Date: 2017-02-15 Impact factor: 3.240