DNA damage in Mexican children living in high-risk contaminated scenarios

The Science of the Total Environment
Yolanda Jasso-PinedaIván N Pérez-Maldonado

Abstract

The aim of this study was to evaluate the deoxyribonucleic acid (DNA) damage (as a biomarker of biological effects) in children living in areas at high risk of contamination in Mexico using the comet assay. The alkaline comet assay was performed in order to assess DNA damage levels in blood cells of 276 children living in eleven communities in four states of Mexico. Moreover, levels of arsenic and 1-hydroxypyrene (1-OHP) in urine and lead and total DDT [sum of 1,1-dichloro-2,2-bis(p-chlorophenyl) ethylene (DDE) and 1,1-bis(p-chlorophenyl)-2,2,2-trichloroethane (DDT)] in blood were quantified. We found urinary 1-OHP levels between <LOD and 14.5 μmol/mol creatinine; for arsenic, the urinary levels were 3.5-180 μg/g creatinine (range). Lead levels in blood ranged from 0.5 to 24 μg/dL and finally, the levels of total DDT (DDE and DDT) ranged from <LOD to 32,000 ng/g lipid. Regarding DNA damage (comet assay), the most important finding in our study was that children exposed to a chemical mixture [high levels of exposure to polycyclic aromatic hydrocarbons (PAHs) and DDT were found] had the significant highest DNA damage level (p<0.05) in their blood cells (olive tail moment=7.5±3.5), when compared with DNA damage levels in children ...Continue Reading

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Citations

Dec 15, 2015·Environmental Science and Pollution Research International·Lucia G Pruneda-ÁlvarezIván N Pérez-Maldonado
Nov 19, 2015·Archives of Environmental Contamination and Toxicology·Sandra Teresa Orta-GarcíaIván N Pérez-Maldonado
Mar 19, 2016·Archives of Environmental Contamination and Toxicology·Angeles C Ochoa-MartinezIvan N Pérez-Maldonado
Aug 16, 2015·Environmental Toxicology and Pharmacology·Tania Ruiz-VeraIván N Pérez-Maldonado
Aug 16, 2016·The Science of the Total Environment·Lucía G Pruneda-AlvarezIván N Pérez-Maldonado
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Nov 1, 2016·Environmental Science and Pollution Research International·Ángeles C Ochoa-MartínezIván N Pérez-Maldonado
Jun 25, 2017·Bulletin of Environmental Contamination and Toxicology·Ivan N Perez-MaldonadoJose A Varela-Silva
Oct 11, 2017·Environmental Science and Pollution Research International·Mónica S Pérez-VázquezIván N Pérez-Maldonado
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Jan 23, 2016·Environmental Science and Pollution Research International·R Flores-RamírezF Díaz-Barriga
Oct 2, 2017·Environmental Toxicology and Pharmacology·Jorge O Avila-AlejoIván N Pérez-Maldonado
Apr 4, 2021·International Journal of Environmental Research and Public Health·Nor Ashikin SopianMohd Talib Latif
Nov 10, 2020·Environmental Toxicology and Pharmacology·Ángeles C Ochoa-MartínezIván N Pérez-Maldonado
Jul 17, 2021·Mutation Research. Genetic Toxicology and Environmental Mutagenesis·Qin QianGuo-Chun Li

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