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4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) found in chewing tobacco, snuff, cigarettes, and cigars is a tobacco-specific nitrosamine and classified as a possible human carcinogen (Class 2B) by the International Agency for Research on Cancer (IARC). NNK given intraperitoneally was seen to induce lung and liver adenomas.To evaluate the genotoxicity of NNK in vivo, NNK was intraperitoneally...
The genotoxicity of endogenously formed N-nitrosamines from secondary amines and sodium nitrite (NaNO 2 ) was evaluated in multiple organs of mice, using comet assay. Groups of four male mice were orally given dimethylamine, proline, and morpholine simultaneously with NaNO 2 . The stomach, colon, liver, kidney, urinary bladder, lung, brain, and bone marrow were sampled 3 and 24h after...
The o-aminoazotoluene (AAT) has been evaluated as a possible human carcinogen by the International Agency for Research on Cancer. In rodents, it is carcinogenic mainly in the liver, and also in lung following long term administration. We previously examined in lambda/lacZ transgenic mice for the induction of lacZ mutations in liver, lung, urinary bladder, colon, kidney, bone marrow, and testis. AAT...
o-Aminoazotoluene (AAT) has been evaluated as a possible human carcinogen (Class 2B) by the International Agency for Research on Cancer (IARC). The Ames test found it to be mutagenic in the presence of a metabolic activation system, whereas it has little clastogenicity either in vitro or in vivo in the chromosomal aberration assay. AAT is also carcinogenic in the lung or liver of mice and rats given...
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