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Assessment of aniline derivatives-induced DNA damage in the liver cells of B6C3F1 mice using the alkaline single cell gel electrophoresis ("comet") assay.

Teratogenesis, carcinogenesis, and mutagenesis (1999-09-25)
B Przybojewska
ABSTRACT

The alkaline single cell gel electrophoresis (SCGE) or "comet" assay under alkaline conditions was used to measure DNA damage in the liver cells of B6C3F1 male mice exposed to 2,4-dimethylaniline and 2, 4,6-trimethylaniline. Cells embedded in agarose were lysed, subjected briefly to an electric field, stained with a fluorescent DNA-binding stain, and viewed using a fluorescence microscope. The effect of 2,4-dimethylaniline and 2,4,6-trimethylaniline was studied after a single intraperitoneal injections at doses equal to 100, 200 mg/kg and 150, 300 mg/kg b.w., respectively. It was found that 2, 4-dimethylaniline and 2,4,6-trimethylaniline were able to damage DNA in the liver cells of the mice. As has been published elsewhere, the DNA damaging effect of the studied compounds were also observed in bone marrow cells of the mice. In conclusion, taking into account the results mentioned above and the results obtained by other researchers who reported mutagenic activity of 2,4-dimethylaniline and 2,4,6-trimethylaniline in Salmonella typhimurium assay and in a DNA repair test using Chinese hamster hepatocytes, it can be stated that both aromatic amines are genotoxic. Teratogenesis Carcinog. Mutagen. 19:323-327, 1999.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
2,4,6-Trimethylaniline, 98%
Sigma-Aldrich
2,4-Dimethylaniline, ≥99%
Supelco
2,4-Dimethylaniline, analytical standard
Sigma-Aldrich
2,4-Dimethylaniline, 98%

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