Evaluation of the genotoxic potential due to the action of an effluent contaminated with chromium, by the comet assay in CHO-K1 cultures
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The comet assay technique has been considered to be more efficient in the biomonitoring of aquatic environments that the micronucleus and sister chromatid exchange techniques. The comet assay has been used to determine breaks in the DNA strands of organisms exposed to pollutants with a genotoxic potential. The comet technique was applied to CHO-K1 cells in order to evaluate the genotoxic potential of the waters of the Sapucaizinho River (Municipality of Patrocínio Paulista, State of São Paulo, Brazil), which receive tannery effluents and therefore are contaminated with chromium. The results indicated high genotoxicity of the waters collected at sites located downstream from the emission of tannery effluents, where the concentration of chromium was found to be high.
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Chromium, Comet assay, Genotoxicity
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Inglês
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Caryologia, v. 58, n. 1, p. 40-46, 2005.
