title: Effect of the co-carcinogen benzo[e]pyrene on microsome-mediated chemical mutagenesis in Salmonella typhimurium.
abstract: Chemical agents that possess the ability to alter tumorigenicity of carcinogens (administered at subthreshold dose) constitute a major health hazard. We have employed the Ames Salmonella assay to examine the effect of co-carcinogenic benzo[e]pyrene (B[e]P) on microsome-mediated chemical mutagenesis. B[e]P enhanced the mutagenic activity induced by 2-acetylaminofluorene (2-AAF) and benzo[a]pyrene (B[a]P) in strains TA1538 and TA98. Enhancement was also noted with N-hydroxy-2-AAF (the proximal metabolite of 2-AAF) but not with an ultimate carcinogenic form (N-acetoxy-2-AAF). These results suggest the use of this approach to detect chemical agents that possess the ability to alter the activity of mutagenic or carcinogenic chemicals.
mesh_terms: D015073:2-Acetylaminofluorene / Q000494:pharmacology*; D001580:Benzopyrenes / Q000494:pharmacology*; D001711:Biotransformation; D002273:Carcinogens; D004359:Drug Therapy, Combination; D009152:Mutagenicity Tests; D009153:Mutagens; D012486:Salmonella typhimurium / Q000235:genetics
chemical_list: D001580:Benzopyrenes; D002273:Carcinogens; D009153:Mutagens; D015073:2-Acetylaminofluorene