title: Transformation of BALB/c 3T3 cells in vitro by the fungicides captan, captafol and folpet.
abstract: Cytotoxic and cell-transforming activities of the three fungicides, captan, captafol and folpet, have been studied in an experimental in vitro model by exposing BALB/c 3T3 cells to the chemicals with or without S-9 mix-induced bioactivation. Cytotoxicity of the three compounds was reduced in the presence of the metabolizing system. Each assayed pesticide displayed cell-transforming ability in the presence of the metabolizing system. The relative efficiency was: captafol > captan > folpet. Cell transformation was considered to be due to carcinogenesis-promoting activity. These data, obtained in a medium-term (6-8 weeks) experimental model, contribute to a better understanding of the action of the three pesticides in the multistep carcinogenesis process and provide more information concerning the oncogenic risk of these xenobiotic compounds for humans.
mesh_terms: D016475:3T3 Cells; D000818:Animals; D001711:Biotransformation; D002215:Captan / Q000031:analogs & derivatives* / Q000494:pharmacology*; D002470:Cell Survival / Q000187:drug effects; D002471:Cell Transformation, Neoplastic / Q000187:drug effects*; D053138:Cyclohexenes; D005659:Fungicides, Industrial / Q000494:pharmacology*; D051379:Mice; D008862:Microsomes, Liver / Q000378:metabolism; D010797:Phthalimides / Q000494:pharmacology*
chemical_list: D053138:Cyclohexenes; D005659:Fungicides, Industrial; D010797:Phthalimides; C001614:captafol; D002215:Captan; C005020:folpet