Use of comet assay for the risk assessment of oil- and chemical-industry workers

Author:

Megyesi János1,Biró Anna1,Wigmond László1,Major Jenő1,Tompa Anna12

Affiliation:

1. Országos Kémiai Biztonsági Intézet Citogenetikai és Immunológiai Csoport Budapest Nagyvárad tér 2. 1097

2. Semmelweis Egyetem, Általános Orvostudományi Kar Népegészségügyi Intézet Budapest

Abstract

Introduction: The comet assay is a fluorescent microscopic method that is able to detect DNA strand-breaks even in non-proliferative cells in samples with low cell counts. Aim: The aim of the authors was to measure genotoxic DNA damage and assess oxidative DNA damage caused by occupational exposure in groups exposed to benzene, polycyclic aromatic carbohydrates and styrene at the workplace in order to clarify whether the comet assay can be used as an effect marker tool in genotoxicology monitoring. Method: In addition to the basic steps of the comet assay, one sample was treated with formamido-pirimidine-DNA-glycolase restriction-enzyme that measures oxidative DNA damage. Results: An increase was observed in tail moments in each group of untreated and Fpg-treated samples compared to the control. Conclusions: It can be concluded that occupational exposure can be detected with the method. The comet assay may prove to be an excellent effect marker and a supplementary technique for monitoring the presence or absence of genotoxic effects. Orv. Hetil., 2014, 155(47), 1872–1875.

Publisher

Akademiai Kiado Zrt.

Subject

General Medicine

Reference10 articles.

1. Valverde, M., Ostrosky-Wegman, P., Rojas, E., et al.: The application of single cell gel electrophoresis or comet assay to human monitoring studies. Salud Pública Méx., 1999, 41(Suppl.2), S109–S113.

2. Kopjar, N., Garaj-Vrhovac, V., Milas, I.: Assessment of chemotherapy-induced DNA damage in peripheral blood leukocytes of cancer patients using the alkaline comet assay. Teratog. Carcinog. Mutagen., 2002, 22(1), 13–30.

3. Ostling, O., Johanson, K. J.: Microelectrophoretic study of radiation-induced DNA damages in individual mammalian cells. Biochem. Biophys. Res. Commun., 1984, 123(1), 291–298.

4. Megyesi, J., Jakab, M., Biró, A., et al.: Assessment of the effect of genotoxic agent exposition on peripheral lympocytes using single cell gel electrophoresis (comet assay). [Géntoxikus expozíció hatásának vizsgálata egysejtes gélelektroforézissel (COMET-assay) perifériás limfocitákon.] Magyar Onkológia, 2011, 55(3), 213–223. [Hungarian]

5. Tompa, A. (ed.): Technological guideline. [Módszertani útmutató.] Kémiai Biztonsági Intézet, Budapest, 2011. [Hungarian]

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1. Comet assay as a sensitive technique in occupational health studies; A literature review;Journal of Occupational Health and Epidemiology;2018-10-01

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