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. 1986 Aug;67:117–119. doi: 10.1289/ehp.8667117

Mutagenic activities of heterocyclic amines in Chinese hamster lung cells in culture.

M Terada, M Nagao, M Nakayasu, H Sakamoto, F Nakasato, T Sugimura
PMCID: PMC1474400  PMID: 3757946

Abstract

A mutation assay system with Chinese hamster lung cells (CHL) using diphtheria toxin resistance as a selective marker has been established. The mutagenic activities of heterocyclic amines, originally isolated from pyrolyzates of amino acids and proteins, broiled fish and fried beef were assayed in cultured CHL cells in the absence and presence of a metabolic activation system, with diphtheria toxin resistance as a marker. All the heterocyclic amines tested except 3-amino-1,4-dimethyl-5H-pyrido [4,3-b]indole (Trp-P-1) required the presence of a metabolic activation system for mutagenicity on CHL cells. 3-Amino-1-methyl-5H-pyrido[4,3-b]indole (Trp-P-2) was the most mutagenic among the heterocyclic amines tested. Other compounds were also mutagenic in the following order of decreasing potency: Trp-P-1, 2-amino-3,4-dimethylimidazo[4,5-f]quinoline (MeIQ), 2-amino-3-methylimidazo[4,5-f]quinoline (IQ), 2-amino-9H-pyrido[2,3-b]indole (A alpha C), 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx), 2-amino-6-methyldipyrido[1,2-a:3',2'-d]imidazole (Glu-P-1) and 2-aminodipyrido[1,2-a:3',2'-d]imidazole (Glu-P-2).

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Selected References

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