作者: Masanori Terasaki , Koji Kosaka , Shoichi Kunikane , Masakazu Makino , Fujio Shiraishi
DOI: 10.1016/J.CHEMOSPHERE.2011.04.045
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摘要: Abstract The thyroid hormone agonist/antagonist activities of halogenated derivatives bisphenol A (BPA) were assessed using a yeast two-hybrid assay incorporating the human α (TRα), both with and without possible metabolic activation by rat liver S9 preparation. In absence preparation, 3,3′,5,5′-tetrabromobisphenol (TBBPA), 3,3′,5,5′-tetrachlorobisphenol (TCBPA), 3,3′,5-trichlorobisphenol (3,3′,5-triClBPA) exhibited agonist activity, whereas 3-chlorobisphenol (3-ClBPA), 3,5-dichlorobisphenol (3,5-diClBPA), 3,3′-dichlorobisphenol (3,3′-diClBPA), BPA did not. TBBPA TCBPA increased markedly (7.6-fold 3.1-fold, respectively) after their TBBPA, TCBPA, 3,3′,5-triClBPA inhibited binding triiodothyronine (T3) to TRα at 2 × 10−5 M treatment 4 × 10−6 M treatment, demonstrating T3 antagonist activity. These results revealed that significantly potential some BPAs.