title: In vitro transformation of BALB/c-3T3 cells by chlorinated ethanes and ethylenes.
abstract: Eight chlorinated ethanes and 3 chlorinated ethylenes were tested in the BALB/c-3T3 cell transformation assay. Under the conditions of the assay, vinyl chloride and 1,1,1-trichloroethane induced a clear positive transformation response while 1,1,2-trichloroethane and trichloroethylene were weakly positive. Chloroethane, 1,1- and 1,2-dichloroethane, 1,1,1,2- and 1,1,2,2-tetrachloroethane, hexachloroethane and tetrachloroethylene were all negative in the assay conducted in the absence of an exogenous metabolic activation system. These results suggest that the BALB/c-3T3 cells possess capability to activate some, but not all, of the chlorinated hydrocarbons which exhibit species specificity in producing carcinogenicity in mice but not in rats.
mesh_terms: D000818:Animals; D002471:Cell Transformation, Neoplastic / Q000187:drug effects*; D002478:Cells, Cultured; D004305:Dose-Response Relationship, Drug; D004980:Ethane / Q000633:toxicity*; D005030:Ethylenes / Q000633:toxicity*; D006843:Hydrocarbons, Chlorinated / Q000378:metabolism / Q000633:toxicity*; D051379:Mice; D008807:Mice, Inbred BALB C
chemical_list: D005030:Ethylenes; D006843:Hydrocarbons, Chlorinated; C036216:ethylene; D004980:Ethane