Potentially harmful elements in house dust from Estarreja, Portugal: characterization and genotoxicity of the bioaccessible fraction

Abstract : Due to their behavioral characteristics, young children are vulnerable to the ingestion of indoor dust, often contaminated with chemicals that are potentially harmful. Exposure to potentially harmful elements (PHEs) is currently exacerbated by their widespread use in several industrial, agricultural, domestic and technological applications. PHEs cause adverse health effects on immune and nervous systems and can lead to cancer development via genotoxic mechanisms. The present study is an integrated approach that aims at assessing the genotoxicity of bioaccessible PHEs following ingestion of contaminated house dust. A multidisciplinary methodology associating chemical characterization of five house dust samples, extraction of the bioaccessible PHEs in gastric extracts by the unified BARGE method, determination of the bioaccessible fraction and in vitro genotoxicity of gastric extracts in adenocarcinoma gastric human (AGS) cells was developed. The five gastric extracts induced dose-dependent genotoxicity in AGS cells. Copper (bioaccessible concentration up to 111 mg/kg) was probably the prevalent PHE inducing primary DNA damage (up to 5.1-fold increase in tail DNA at 0.53 g/l of gastric extract). Lead (bioaccessible concentration up to 245 mg/kg) was the most prevalent PHE inducing chromosome-damaging effects (r = 0.55; p \ 0.001 for micronucleated cells induction). The association of principal component analysis and Spearman's correlations was decisive to understand the chromosome-damaging properties of the bioacces-sible PHEs in AGS cells. This methodology could be used on a larger-scale study to provide useful information for science-based decision-making in regulatory policies, and a better estimation of human exposure and associated health risks.
Document type :
Journal articles
Complete list of metadatas

Cited literature [65 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01761544
Contributor : Arnaud Jean-Charles <>
Submitted on : Friday, April 5, 2019 - 5:33:19 PM
Last modification on : Tuesday, July 2, 2019 - 12:35:50 PM

File

plumejeaud et al 2016.pdf
Files produced by the author(s)

Identifiers

Citation

Sophie Plumejeaud, Amelia Paula Reis, Virginie Tassistro, Carla Patinha, Yves Noack, et al.. Potentially harmful elements in house dust from Estarreja, Portugal: characterization and genotoxicity of the bioaccessible fraction. Environmental Geochemistry and Health, Springer Verlag (Germany), 2016, 40 (1), pp.127-144. ⟨10.1007/s10653-016-9888-z⟩. ⟨hal-01761544⟩

Share

Metrics

Record views

335

Files downloads

75