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Detection of damage on single- or double-stranded DNA in a population exposed to arsenic in drinking water.
Jiménez-Villarreal, J; Rivas-Armendariz, D I; Pineda-Belmontes, C P; Betancourt-Martínez, N D; Macías-Corral, M A; Guerra-Alanis, A J; Niño-Castañeda, M S; Morán-Martínez, J.
Afiliación
  • Jiménez-Villarreal J; Departamento de Biología Celular y Ultraestructura, Centro de Investigación Biomédica, Facultad de Medicina, Universidad Autónoma de Coahuila, Torreón, Coahuila, México.
  • Rivas-Armendariz DI; Departamento de Investigación, Escuela de Medicina, Unidad Norte, Universidad Autónoma de Coahuila, Piedras Negras, Coahuila, México.
  • Pineda-Belmontes CP; Departamento de Biología Celular y Ultraestructura, Centro de Investigación Biomédica, Facultad de Medicina, Universidad Autónoma de Coahuila, Torreón, Coahuila, México.
  • Betancourt-Martínez ND; Departamento de Biología Celular y Ultraestructura, Centro de Investigación Biomédica, Facultad de Medicina, Universidad Autónoma de Coahuila, Torreón, Coahuila, México.
  • Macías-Corral MA; Departamento de Biología Celular y Ultraestructura, Centro de Investigación Biomédica, Facultad de Medicina, Universidad Autónoma de Coahuila, Torreón, Coahuila, México.
  • Guerra-Alanis AJ; CONACYT-CIMAV Unidad Durango.
  • Niño-Castañeda MS; Departamento de Biología Celular y Ultraestructura, Centro de Investigación Biomédica, Facultad de Medicina, Universidad Autónoma de Coahuila, Torreón, Coahuila, México.
  • Morán-Martínez J; Departamento de Biología Celular y Ultraestructura, Centro de Investigación Biomédica, Facultad de Medicina, Universidad Autónoma de Coahuila, Torreón, Coahuila, México.
Genet Mol Res ; 16(2)2017 May 18.
Article en En | MEDLINE | ID: mdl-28525650
Different studies have suggested an association between arsenic (As) exposure and damage to single-stranded DNA by reactive oxygen species derived from the biotransformation of arsenic. The single strand damages are converted to double strand damage upon interaction with ultraviolet radiation. Analysis of genomic integrity is important for assessing the genotoxicity caused by environmental pollutants. In this study, we compared the concentration of As in drinking water, nutritional status, lifestyle variables, and the level of genotoxicity in an exposed population and a control group. Arsenic content of water was determined using a portable Arsenator® kit. DNA fragmentation was determined using the two-tailed comet assay. Our results show that the exposed population had low nutritional consumption compared to the control group (P < 0.05). Furthermore, the water consumed by the exposed group had As concentration of 14.3 ± 8.4 mg/L, whereas the As level in the water consumed by the control group was 7.7 ± 3.5 mg/L. Analysis shows that the frequency of double strand break (DSB) fragmentation was higher in the population exposed to higher levels of As compared to that of the control group. These results suggest a possible association between the concentration of As in drinking water and lifestyle variables, with increasing fragmentation of DSBs in the exposed population.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Arsénico / Agua Potable / Intoxicación por Arsénico / Roturas del ADN de Doble Cadena / Roturas del ADN de Cadena Simple Tipo de estudio: Diagnostic_studies / Observational_studies / Risk_factors_studies Límite: Adult / Female / Humans / Male País/Región como asunto: Mexico Idioma: En Revista: Genet Mol Res Asunto de la revista: BIOLOGIA MOLECULAR / GENETICA Año: 2017 Tipo del documento: Article Pais de publicación: Brasil

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Arsénico / Agua Potable / Intoxicación por Arsénico / Roturas del ADN de Doble Cadena / Roturas del ADN de Cadena Simple Tipo de estudio: Diagnostic_studies / Observational_studies / Risk_factors_studies Límite: Adult / Female / Humans / Male País/Región como asunto: Mexico Idioma: En Revista: Genet Mol Res Asunto de la revista: BIOLOGIA MOLECULAR / GENETICA Año: 2017 Tipo del documento: Article Pais de publicación: Brasil