Genotoxicity and oxidative stress biomarkers in Carassius gibelio as endpoints for toxicity testing of Ukrainian polluted river waters

TitleGenotoxicity and oxidative stress biomarkers in Carassius gibelio as endpoints for toxicity testing of Ukrainian polluted river waters
Publication TypeJournal Article
Year of Publication2011
AuthorsTsangaris, C, Vergolyas M, Fountoulaki E, Goncharuk VV
JournalEcotoxicology and Environmental Safety
Volume74
Issue8
Pages2240 - 2244
KeywordsAntioxidant enzymes, Bioassay, Carassius gibelio, Double nuclei, Lipid peroxidation, Micronucleus
Abstract

This study aimed to assess oxidative stress and genotoxicity biomarkers in Prussian carp Carassius gibelio laboratory-exposed to water from polluted Ukrainian rivers in order to evaluate their usefulness as endpoints in a short-term bioassay for toxicity testing of freshwaters. The micronucleus (MN) test and the frequency of cells with double nuclei (DN) in erythrocytes and gill cells were used as indicators of chromosome aberrations and abnormalities in cell divisions, respectively. Cellular antioxidant defenses i.e. antioxidant enzyme activities (catalase, Se-dependent glutathione peroxidase, total glutathione peroxidase and glutathione-S-transferase) and oxidative damage, i.e. lipid peroxidation (measured as thiobarbituric acid reactive substances) in the fish liver were used as biomarkers of oxidative stress. Exposure to the polluted river water samples for 96. h resulted in significantly increased MN and DN frequencies, limited increases in antioxidant enzyme activities and no changes in lipid peroxidation. Results suggest that MN and DN frequencies in C gibelio are useful endpoints in a short-term bioassay for genotoxicity testing of environmental water samples in contrast to the oxidative stress biomarkers applied that showed low potential for assessing sublethal effects after a 96. h exposure. © 2011 Elsevier Inc.

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