Title
Daily intake of bisphenol A and triclosan and their association with anthropometric data, thyroid hormones and weight loss in overweight and obese individuals
Author
Faculty/Department
Faculty of Pharmaceutical, Biomedical and Veterinary Sciences. Pharmacy
Faculty of Medicine and Health Sciences
Publication type
article
Publication
Oxford ,
Subject
Chemistry
Biology
Source (journal)
Environment international. - Oxford
Volume/pages
76(2015) , p. 98-105
ISSN
0160-4120
ISI
000349585600009
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Bisphenol A (BPA) and triclosan (TCS) were determined in urine of Belgian overweight and obese (n = 151) and lean (n = 43) individuals. After the first urine collection (0 M), obese patients started a diet program or have undergone bariatric surgery. Hereafter, three additional urine samples from obese patients were collected after 3 (3 M), 6 (6 M) and 12 (12 M) months. Both compounds were detected in >99% of the samples. BPA had median concentrations of 1.7 and 12 ng/mL in obese and lean groups, respectively, while TCS had median concentrations of 1.5 and 0.9 ng/mL in the obese and lean groups, respectively. The obese group had higher urinary concentrations (ng/mL) of BPA (p < 0.5), while no significant differences were found for TCS between the obese and lean groups. No time trends between the different collection moments were observed. The BPA concentrations in the obese group were negatively associated with age, while no gender difference or relationship with body mass index was observed. For TCS, no relationships with gender, BMI, or age were found. The temporal variability of BPA and TCS was assessed with calculation of the intraclass correlation coefficient, Spearman rank correlation coefficients, and surrogate category analysis. We observed evidence that single spot urine samples might be predictive of exposure over a longer period of time. Dietary intakes of BPA and TCS did not differ significantly among the time points considered after obese individuals started losing weight (6 and 12 months). Multiple linear regression analyses after adjusting for age and weight loss revealed negative associations between urinary TCS and serum FT4 in the 0 M and 3 M female obese individuals and positive associations between urinary BPA and serum TSH in the lean group. (C) 2014 Elsevier Ltd. All rights reserved.
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