Arsenic concentration in topsoil of central Chile is associated with aberrant methylation of P53 gene in human blood cells: a cross-sectional study.


Journal

Environmental science and pollution research international
ISSN: 1614-7499
Titre abrégé: Environ Sci Pollut Res Int
Pays: Germany
ID NLM: 9441769

Informations de publication

Date de publication:
Jul 2022
Historique:
received: 06 09 2021
accepted: 02 02 2022
pubmed: 22 2 2022
medline: 9 7 2022
entrez: 21 2 2022
Statut: ppublish

Résumé

Gene expression can be modified in people who are chronically exposed to high concentrations of heavy metals. The soil surrounding the Ventanas Industrial Complex, located on the coastal zone of Puchuncaví and Quintero townships (Chile), contain heavy metal concentrations (As, Cu, Pb, Zn, among others) that far exceed international standards. The aim of this study was to determine the potential association of the heavy metals in soils, especially arsenic, with the status of methylation of four tumor suppressor genes in permanent residents in those townships. To study the methylation status in genes p53, p16, APC, and RASSF1A, we took blood samples from adults living in areas near the industrial complex for at least 5 years and compared it to blood samples from adults living in areas with normal heavy metal concentrations of soils. Results indicated that inhabitants of an area with high levels of heavy metals in soil have a significantly higher proportion of methylation in the promoter region of the p53 tumor suppressor gene compared with control areas (p-value: 0.0035). This is the first study to consider associations between heavy metal exposure in humans and aberrant DNA methylation in Chile. Our results suggest more research to support consistent decision-making on processes of environmental remediation or prevention of exposure.

Identifiants

pubmed: 35188613
doi: 10.1007/s11356-022-19085-2
pii: 10.1007/s11356-022-19085-2
doi:

Substances chimiques

Metals, Heavy 0
Soil 0
Soil Pollutants 0
Tumor Suppressor Protein p53 0
Arsenic N712M78A8G

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

48250-48259

Subventions

Organisme : ANID
ID : Grant 1212037

Informations de copyright

© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

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Auteurs

Eva Madrid (E)

Interdisciplinary Centre for Health Studies (CIESAL) - Escuela de Medicina, Universidad de Valparaíso, Viña del Mar, Valparaíso, Chile. eva.madrid@uv.cl.

Isabel Gonzalez-Miranda (I)

Centro Regional de Investigación e Innovación para la Sostenibilidad de la Agricultura y los Territorios Rurales (Ceres), Quillota, Valparaíso, Chile.
Pontificia Universidad Católica de Valparaíso, Vicerrectoría de Investigación y Estudios Avanzados, Valparaíso, Chile.

Sergio Muñoz (S)

Department of Public Health-CIGES, Universidad de La Frontera, Temuco, Chile.

Carolina Rejas (C)

Department of Surgery, University Hospital Regensburg, Regensburg, Germany.

Felipe Cardemil (F)

Department of Basic and Clinical Oncology, School of Medicine, Universidad de Chile, Santiago, Chile.

Felipe Martinez (F)

Facultad de Medicina, Escuela de Medicina, Universidad Andrés Bello, Viña del Mar, Chile.

Juan Pablo Cortes (JP)

Mental Health Unit, Hospital Carlos van Buren, Valparaiso, Chile.

Maite Berasaluce (M)

Interdisciplinary Centre for Health Studies (CIESAL) - Escuela de Medicina, Universidad de Valparaíso, Viña del Mar, Valparaíso, Chile.

Mario Párraga (M)

Laboratorio de Biología Molecular, Centro de Investigaciones Biomédicas, Universidad de Valparaíso, Valparaíso, Chile.

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