title: Responses of the L5178Y mouse Lymphoma cell forward mutation assay. V: 27 coded chemicals.
abstract: Twenty-seven chemicals were tested for their mutagenic potential in the L5178Y tk+/tk- mouse lymphoma cell forward mutation assay using procedures based upon those described by McGregor et al. (McGregor DB, Martin R, Cattanach P, Edwards I, McBride D, Caspary WJ (1987): Environ Mol Mutagen 9:143-160). Cultures were exposed to the chemicals for 4 hr, then cultured for 2 days before plating in soft agar with or without trifluorothymidine (TFT), 3 micrograms/ml. The chemicals were tested at least twice. Statistically significant responses were obtained with acid orange 10, aniline, benzaldehyde, o-chloroaniline, chlorodibromomethane, cytembena, 1,2-dibromo-4-(1,2-dibromomethyl) cyclohexane, dieldrin, lithocholic acid, oxytetracycline, phenazopyridine HCl, 1-phenyl-3-methyl-5-pyrazolone, sodium diethyldithiocarbamate, solvent yellow 14, tetraethylthiuram disulfide (disulfiram), 2,4-toluene diisocyanate, and 2,6-toluene diisocyanate. Apart from phenazopyridine HCl, acid orange 10, and solvent yellow 14, rat liver S9 mix was not a requirement for the mutagenic activity of these compounds. Chemical not identified as mutagens were N-4-acetylaminofluorene, chlorpheniramine maleate, chloropropamide, 1,4-dioxane, endrin, ethylene glycol, iron dextran, methapyrilene, sodium(2-ethylhexyl)alcohol
authors.affiliation: Inveresk Research International Limited, Musselburgh, Scotland, United Kingdom.
authors.forename: D B
authors.initials: DB
authors.lastname: McGregor
authors.forename: A G
authors.initials: AG
authors.lastname: Brown
authors.forename: S
authors.initials: S
authors.lastname: Howgate
authors.forename: D
authors.initials: D
authors.lastname: McBride
authors.forename: C
authors.initials: C
authors.lastname: Riach
authors.forename: W J
authors.initials: WJ
authors.lastname: Caspary
mesh_terms: D000818:Animals; D003627:Data Interpretation, Statistical; D005069:Evaluation Studies as Topic; D008297:Male; D051379:Mice; D015394:Molecular Structure; D009152:Mutagenicity Tests; D009153:Mutagens / Q000633:toxicity*; D011786:Quality Control; D051381:Rats; D011916:Rats, Inbred F344; D013937:Thymidine Kinase / Q000235:genetics; D014271:Trifluridine; D014407:Tumor Cells, Cultured
chemical_list: D009153:Mutagens; D013937:Thymidine Kinase; D014271:Trifluridine