title: The effects of butylated hydroxytoluene on the in vitro metabolism, DNA-binding and mutagenicity of aflatoxin B1 in the rat.
abstract: Butylated hydroxytoluene pretreatment in the rat enhanced the total in vitro metabolism of aflatoxin B1 by the hepatic postmitochondrial fraction (S-9) and increased the formation of aflatoxin M1, aflatoxin Q1 and a metabolite tentatively identified as the aflatoxin-glutathione conjugate, the latter being the major metabolite produced. Addition of diethyl maleate, a glutathione depletor, to the incubation mix, reduced formation of the conjugate. No significant difference between treated and control animals was observed in the S-9-mediated binding of aflatoxin B1 to calf thymus DNA. However, the mutagenicity of aflatoxin B1 in Salmonella typhimurium TA98 was significantly lower in the presence of S-9 from BHT-treated rats than with S-9 from controls.
mesh_terms: D016604:Aflatoxin B1; D000348:Aflatoxins / Q000378:metabolism / Q000633:toxicity*; D000818:Animals; D001665:Binding Sites / Q000187:drug effects; D002084:Butylated Hydroxytoluene / Q000494:pharmacology*; D002855:Chromatography, Thin Layer; D004247:DNA / Q000378:metabolism*; D066298:In Vitro Techniques; D008099:Liver / Q000187:drug effects / Q000378:metabolism; D008297:Male; D008930:Mitochondria, Liver / Q000378:metabolism; D009152:Mutagenicity Tests; D009153:Mutagens / Q000378:metabolism*; D051381:Rats; D011916:Rats, Inbred F344
chemical_list: D000348:Aflatoxins; D009153:Mutagens; D002084:Butylated Hydroxytoluene; D004247:DNA; D016604:Aflatoxin B1