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Application of mutagen sensitivity assay in a glioma case-control study.
Erdal, Serap; McCarthy, Bridget J; Gurule, Natalia; Berwick, Marianne; Gonzales, Emily; Byrd, Johanna; Flores, Kristina; Shimek, JoAnna; Il'yasova, Dora; Ali-Osman, Francis; Bigner, Darell D; Davis, Faith G; Leyba, Alexis N; White, Kirsten A M.
Afiliación
  • Erdal S; Divisions of Environmental, Occupational Health Science, University of Illinois at Chicago, Chicago, IL, United States.
  • McCarthy BJ; Epidemiology and Biostatistics, University of Illinois at Chicago, Chicago, IL, United States.
  • Gurule N; University of Illinois at Chicago Cancer Center, University of Illinois at Chicago, Chicago, IL, United States.
  • Berwick M; Department of Cancer Biology, University of Colorado Anschutz Medical Campus, United States.
  • Gonzales E; Molecular Epidemiology Lab, University of New Mexico, Albuquerque, NM, United States.
  • Byrd J; Division of Epidemiology, University of New Mexico, Albuquerque, NM, United States.
  • Flores K; Molecular Epidemiology Lab, University of New Mexico, Albuquerque, NM, United States.
  • Shimek J; Molecular Epidemiology Lab, University of New Mexico, Albuquerque, NM, United States.
  • Il'yasova D; UNM Cancer Center, University of New Mexico, Albuquerque, NM, United States.
  • Ali-Osman F; Department of Environmental Health, Indiana University Bloomington, IN, United States.
  • Bigner DD; Duke Comprehensive Cancer Center, Duke University Medical Center, Durham, NC, United States.
  • Davis FG; Preston Robert Tisch Brain Tumor Center at Duke, Duke University Medical Center, Durham, NC, United States.
  • Leyba AN; Department of Surgery, Duke University Medical Center, Durham, NC, United States.
  • White KAM; Duke Comprehensive Cancer Center, Duke University Medical Center, Durham, NC, United States.
Toxicol Rep ; 5: 183-188, 2018.
Article en En | MEDLINE | ID: mdl-29854587
Few risk factors for glioma have been identified other than ionizing radiation. The alkylating agent acrylamide is a compound found in both occupational and the general environment and identified as one of the forty known or suspected neurocarcinogens in animal models. The mutagen sensitivity assay (MSA) has been used to indirectly show reduced DNA repair capacity upon exposure to ionizing radiation in those with glioma compared to controls. In this study, MSA was used to assess its applicability to a glioma case-control study and to test the hypothesis that subjects with glioma may have lower DNA repair capacity after exposure to selected potential human neurocarcinogens (i.e. acrylamide), compared to controls. Approximately 50 case and 50 control subjects were identified from a clinic-based study that investigated environmental risk factors for glioma, who completed an exposure survey, and had frozen immortalized lymphocytes available. A total of 50 metaphase spreads were read and reported for each participant. The association of case-control status with MSA for acrylamide, i.e. breaks per spread, was examined by multivariable logistic regression models. The mean number of breaks per slide was similar between hospital-based controls and cases. In addition, case-control status or exposure categories were not associated with the number of breaks per spread. Although the MSA has been shown as a useful molecular epidemiology tool for identifying individuals at higher risk for cancer, our data do not support the hypothesis that glioma patients have reduced DNA repair capacity in response to exposure to acrylamide. Further research is needed before the MSA is utilized in large-scale epidemiological investigations of alkylating agents.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Diagnostic_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Idioma: En Revista: Toxicol Rep Año: 2018 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Irlanda

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Diagnostic_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Idioma: En Revista: Toxicol Rep Año: 2018 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Irlanda