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Assessment of adrenaline-induced DNA damage in whole blood cells with the comet assay Cover

Assessment of adrenaline-induced DNA damage in whole blood cells with the comet assay

Open Access
|Jan 2019

Abstract

Harmful effects of elevated levels of catecholamines are mediated by various mechanisms, including gene transcription and formation of oxidation products. The aim of this study was to see whether the molecular mechanisms underlying the damaging action of adrenaline on DNA are mediated by reactive oxygen species (ROS). To do that, we exposed human whole blood cells to 10 μmol L-1adrenaline or 50 μmol L-1H2O2(used as positive control) that were separately pre-treated or post-treated with 500 μmol L-1of quercetin, a scavenger of free radicals. Quercetin significantly reduced DNA damage in both pre- and post-treatment protocols, which suggests that adrenaline mainly acts via the production of ROS. This mechanism is also supported by gradual lowering of adrenaline and H2O2-induced DNA damage 15, 30, 45, and 60 min after treatment. Our results clearly show that DNA repair mechanisms are rather effective against ROS-mediated DNA damage induced by adrenaline.

DOI: https://doi.org/10.2478/aiht-2018-69-3154 | Journal eISSN: 1848-6312 | Journal ISSN: 0004-1254
Language: English, Croatian, Slovenian
Page range: 304 - 308
Submitted on: May 1, 2018
Accepted on: Nov 1, 2018
Published on: Jan 11, 2019
Published by: Institute for Medical Research and Occupational Health
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2019 Dijana Topalović, Dragana Dekanski, Biljana Spremo-Potparević, Ninoslav Djelić, Vladan Bajić, Lada Živković, published by Institute for Medical Research and Occupational Health
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.