In vivo and in vitro genotoxicity assessment of 2-methylisoborneol, causal agent of earthy-musty taste and odor in water.
Ecotoxicol Environ Saf
; 100: 282-6, 2014 Feb.
Article
em En
| MEDLINE
| ID: mdl-24238741
The water eutrophication process by phosphorus and nitrogen allows cyanobacteria blooms which promote, among other effects, the generation and release of the metabolite 2-methylisoborneol (2-MIB) in the environment. This substance has been shown to be recalcitrant to conventional water treatment, degrading water quality. Considering the limited number of studies on the biological effects of 2-MIB in eukaryotic organisms, the present study assessed the genotoxicity of 2-MIB using the in vitro comet assay and cytokinesis block-micronucleus (CBMN-Cytome) assay on Chinese Hamster Ovary (CHO) cells and the in vivo Drosophila melanogaster Somatic Mutation and Recombination Test (SMART). The results showed that 2-MIB (125, 250 and 500 µg/mL) was unable to induce gene and chromosome mutations or events associated with mitotic recombination in the SMART. Similarly, four different concentrations (7.5, 15, 30 and 60 µg/mL) of 2-MIB did not induce increments in frequencies of micronuclei, nuclear buds, and nucleoplasmatic bridges in the CBMN-Cytome assay. In the comet assay, the positive results were restricted to the highest dose, 60 µg/mL of 2-MIB. The results obtained may help evaluate the genotoxic profile of extracellular algal products.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
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Canfanos
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Drosophila melanogaster
Limite:
Animals
Idioma:
En
Revista:
Ecotoxicol Environ Saf
Ano de publicação:
2014
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Holanda