title: Mutagenicity of aminocarbazoles and nitrocarbazoles.
abstract: The mutagenic activity of all 4 isomeric aminocarbazoles and 4 nitrocarbazoles was evaluated in Salmonella typhimurium tester strains TA98. TA100 and TA1535. All compounds were assayed both in the presence and absence of liver homogenate from Aroclor-treated rats. Among the aminocarbazoles, 2-aminocarbazole was found to be most active in both tester strains, although somewhat less active than 2-aminofluorene. 3-Aminocarbazole was the only other isomer that was mutagenic towards TA98 at the dose levels employed (5--200 micrograms). 4-Aminocarbazole was moderately active in TA100, and 1-aminocarbazole was inactive in both TA98 and TA100. Similar differences in mutagenic potency and specificity towards the tester strains were observed for the related series of nitrocarbazoles.
mesh_terms: D000588:Amines / Q000494:pharmacology; D000818:Animals; D001711:Biotransformation; D002227:Carbazoles / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D008297:Male; D008862:Microsomes, Liver / Q000378:metabolism; D009153:Mutagens; D009154:Mutation; D009574:Nitro Compounds / Q000494:pharmacology; D051381:Rats; D011916:Rats, Inbred F344; D012486:Salmonella typhimurium / Q000187:drug effects; D013329:Structure-Activity Relationship
chemical_list: D000588:Amines; D002227:Carbazoles; D009153:Mutagens; D009574:Nitro Compounds