The mutagenicity of 3-tert-butyl-4-hydroxyanisole (BHA) and its metabolites was investigated in the reverse mutation assay using S. typhimurium strains and the chromosomal aberration test in vitro using a Chinese hamster fibroblast cell line, CHL. BHA, tert-butylhydroquinone (BHQ), tert-butylquinone (BQ) and
Drug metabolism and disposition: the biological fate of chemicals, 20(6), 816-820 (1992-11-01)
3-Tert-butyl-4-hydroxyanisole (3-BHA) was metabolized in the presence of horseradish peroxidase and hydrogen peroxide to 2-tert-butyl-p-benzoquinone (TBQ), 2,3-epoxy-5-tert-butyl-1,4-benzoquinone (TBQ-epoxide), and two known dimers. The formation of TBQ from 3-BHA required both horseradish peroxidase and hydrogen peroxide. When 2.5 mM 3-BHA was
Carcinogen-induced aberrant crypts (AC) of the colon are a precancerous state that leads to malignancy. The inhibition of AC formation by chemopreventive agents was evaluated in this study. Colon AC were induced by 1,2-dimethylhydrazine (DMH) in 3 weeks in CF1
Archives of biochemistry and biophysics, 333(2), 482-488 (1996-09-15)
Peroxynitrite is a strong oxidant that reacts with a variety of biomolecules in vivo and in vitro. When rat thymocytes in phosphate buffer are exposed to 25 microM peroxynitrite for 10 min, DNA single strand breaks (SSB) can be detected.
DNA damage in the forestomach epithelium of male F344 rats was tested by alkaline elution assay following oral administration of 3-tert-butyl-4-hydroxyanisole (3-BHA) and its free metabolites. Although 1% 3-BHA and 0.001% tert-butylhydroquinone (BHQ) caused no detectable DNA damage, a tert-butylquinone
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