Journal
MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS
Volume 492, Issue 1-2, Pages 29-38Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1383-5718(01)00153-X
Keywords
Salmonella; Ames test; mutagenicity; carcinogenicity; non-carcinogen; false-positive
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In the National Toxicology Program database of 172 chemicals that were judged non-carcinogenic or equivocal in 2 year rodent studies in both sexes of rats and mice, there are 38 chemicals that were mutagenic in Salmonella. All but two of the chemicals had structural alerts for mutagenicity. The largest proportion of the mutagenic non-carcinogens were benzeneamines and substituted benzeneamines. In all, 12 of the mutagenic non-carcinogens had mutagenic carcinogen analogues, and for two chemicals, the carcinogenic analogues were not mutagenic. Non-carcinogens that were mutagenic in Salmonella also tended to be mutagenic and clastogenic in mammalian in vitro tests. The mutagenic responses are discussed and explanations offered for the mutagenicity and lack of carcinogenic activity of these chemicals. Published by Elsevier Science B.V.
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