Low-level arsenic exposure: Nutritional and dietary predictors in first-grade Uruguayan children

Environmental Research
Katarzyna KordasMarie Vahter

Abstract

Arsenic exposure in children is a public health concern but is understudied in relation to the predictors, and effects of low-level exposure. We examined the extent and dietary predictors of exposure to inorganic arsenic in 5-8 year old children from Montevideo, Uruguay. Children were recruited at school; 357 were enrolled, 328 collected morning urine samples, and 317 had two 24-h dietary recalls. Urinary arsenic metabolites, i.e. inorganic arsenic (iAs), methylarsonic acid (MMA), and dimethylarsinic acid (DMA), were measured using high-performance liquid chromatography with hydride generation and inductively coupled plasma mass spectrometry (HPLC-HG-ICP-MS), and the sum concentration (U-As) used for exposure assessment. Proportions of arsenic metabolites (%iAs, %MMA and %DMA) in urine were modelled in OLS regressions as functions of food groups, dietary patterns, nutrient intake, and nutritional status. Exposure to arsenic was low (median U-As: 9.9µg/L) and household water (water As: median 0.45µg/L) was not a major contributor to exposure. Children with higher consumption of rice had higher U-As but lower %iAs, %MMA, and higher %DMA. Children with higher meat consumption had lower %iAs and higher %DMA. Higher scores on "nutri...Continue Reading

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Citations

Apr 9, 2016·Toxicological Sciences : an Official Journal of the Society of Toxicology·Helena Skröder LövebornMarie Vahter
Apr 11, 2018·Environmental Health Perspectives·Nate Seltenrich
Apr 23, 2019·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·I Gavilanes-TeránÁngel A Carbonell-Barrachina
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Jan 27, 2019·The Science of the Total Environment·Rachael BurganowskiKatarzyna Kordas
Nov 24, 2017·Environmental Research·Cécile MarieMarie-Pierre Sauvant-Rochat
Aug 29, 2018·Toxicology and Applied Pharmacology·Jessica De LomaKarin Broberg
Apr 8, 2021·Environmental Health Perspectives·Dayana A DelgadoBrandon L Pierce
Jun 12, 2019·The Science of the Total Environment·N MañayV Bühl
Dec 12, 2018·The Science of the Total Environment·Jessica De LomaJacques Gardon
Oct 19, 2021·The Cochrane Database of Systematic Reviews·Sajin BaePatrick J Stover
Jan 10, 2020·The Science of the Total Environment·Khalid M KhanFaruque Parvez

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