Oxidative Stress Levels Induced by Mercury Exposure in Amazon Juvenile Populations in Brazil

Leandro V.B. Carvalho, Sandra S. Hacon, Claudia M. Vega, Jucilene A. Vieira, Ariane L. Larentis, Rita C. O. C. Mattos, Daniel Valente, Isabele C. Costa-Amaral, Dennys S. Mourão, Gabriela P. Silva and Beatriz F. A. Oliveira
Additional contact information
Leandro V.B. Carvalho: Toxicology Laboratory, Center for Studies of Worker’s Health and Human Ecology (CESTEH), National School of Public Health Sergio Arouca (ENSP), Oswaldo Cruz Foundation (Fiocruz), Leopoldo Bulhões Street, 1480, Manguinhos, Rio de Janeiro-RJ, CEP 21041-210, Brazil
Sandra S. Hacon: Department of Endemics Samuel Pessoa (DENSP), National School of Public Health Sergio Arouca (ENSP), Oswaldo Cruz Foundation (Fiocruz), Leopoldo Bulhões Street, 1480, Manguinhos, Rio de Janeiro-RJ, CEP 21041-210, Brazil
Claudia M. Vega: Department of Endemics Samuel Pessoa (DENSP), National School of Public Health Sergio Arouca (ENSP), Oswaldo Cruz Foundation (Fiocruz), Leopoldo Bulhões Street, 1480, Manguinhos, Rio de Janeiro-RJ, CEP 21041-210, Brazil
Jucilene A. Vieira: Toxicology Laboratory, Center for Studies of Worker’s Health and Human Ecology (CESTEH), National School of Public Health Sergio Arouca (ENSP), Oswaldo Cruz Foundation (Fiocruz), Leopoldo Bulhões Street, 1480, Manguinhos, Rio de Janeiro-RJ, CEP 21041-210, Brazil
Ariane L. Larentis: Toxicology Laboratory, Center for Studies of Worker’s Health and Human Ecology (CESTEH), National School of Public Health Sergio Arouca (ENSP), Oswaldo Cruz Foundation (Fiocruz), Leopoldo Bulhões Street, 1480, Manguinhos, Rio de Janeiro-RJ, CEP 21041-210, Brazil
Rita C. O. C. Mattos: Toxicology Laboratory, Center for Studies of Worker’s Health and Human Ecology (CESTEH), National School of Public Health Sergio Arouca (ENSP), Oswaldo Cruz Foundation (Fiocruz), Leopoldo Bulhões Street, 1480, Manguinhos, Rio de Janeiro-RJ, CEP 21041-210, Brazil
Daniel Valente: Toxicology Laboratory, Center for Studies of Worker’s Health and Human Ecology (CESTEH), National School of Public Health Sergio Arouca (ENSP), Oswaldo Cruz Foundation (Fiocruz), Leopoldo Bulhões Street, 1480, Manguinhos, Rio de Janeiro-RJ, CEP 21041-210, Brazil
Isabele C. Costa-Amaral: Toxicology Laboratory, Center for Studies of Worker’s Health and Human Ecology (CESTEH), National School of Public Health Sergio Arouca (ENSP), Oswaldo Cruz Foundation (Fiocruz), Leopoldo Bulhões Street, 1480, Manguinhos, Rio de Janeiro-RJ, CEP 21041-210, Brazil
Dennys S. Mourão: Department of Endemics Samuel Pessoa (DENSP), National School of Public Health Sergio Arouca (ENSP), Oswaldo Cruz Foundation (Fiocruz), Leopoldo Bulhões Street, 1480, Manguinhos, Rio de Janeiro-RJ, CEP 21041-210, Brazil
Gabriela P. Silva: Department of Endemics Samuel Pessoa (DENSP), National School of Public Health Sergio Arouca (ENSP), Oswaldo Cruz Foundation (Fiocruz), Leopoldo Bulhões Street, 1480, Manguinhos, Rio de Janeiro-RJ, CEP 21041-210, Brazil
Beatriz F. A. Oliveira: Department of Endemics Samuel Pessoa (DENSP), National School of Public Health Sergio Arouca (ENSP), Oswaldo Cruz Foundation (Fiocruz), Leopoldo Bulhões Street, 1480, Manguinhos, Rio de Janeiro-RJ, CEP 21041-210, Brazil

IJERPH, 2019, vol. 16, issue 15, 1-15

Abstract: Oxidative stress can be induced by mercury (Hg) exposure, including through fish consumption (diet), leading to health risks. The objective of this study was to evaluate the association between oxidative stress biomarkers and dietary Hg exposure levels in riverine children and adolescents at Madeira River (RO/Brazil). Population from three riverine local communities presenting different fish consumption frequencies was sampled. Hg was determined in blood (ICP-MS) and glutathione (GSH); glutathione S-transferases (GST) and malondialdehyde (MDA) were determined in serum (spectrophotometry). Statistical analyses were performed using parametric and non-parametric tests. Multiple linear regression models and generalized additives models were also used to estimate the relationships between oxidative stress biomarkers and blood Hg. The juvenile riverine population from Cuniã RESEX presented the highest levels of oxidative stress and Hg levels in blood (GST = 27.2 (4.93) U/L, MDA = 1.69 (0.27) µmol/L, Hg = 20.6 (18.0) µg/L). This population also presented the highest frequency of fish consumption. The positive relation between Hg and GST and MDA, adjusted for individual characteristics, suggests an oxidative effect. This study shows the importance of oxidative stress biomarkers in the evaluation of dietary Hg exposure since initial and reversible metabolic changes were observed, enriching health risk assessments.

Keywords: oxidative stress; mercury exposure; biomarkers; juvenile riverine communities (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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