PCB methyl sulphones in rat liver after exposure to PCB (Clophen A50): analysis and radiosynthesis of selected methylsulphonyl-PCBs
作者:C. Larsson、Å. Bergman
DOI:10.1080/00498250110038658
日期:2001.1
4-MeSO2-2,2',3,4,5',6'-hexaCB (4'-MeSO2-CB132) decreased significantly. 4. A route for the synthesis of radiolabelled MeSO2-PCBs was developed employing the 'Pummerer reaction' to convert methylthio-PCBs (MeS-PCBs) to the corresponding mercapto-PCBs (SH-PCB). The SH-PCBs were methylated with radiolabelled methyl iodide and the resulting sulphides oxidized to yield the corresponding MeSO2-PCBs. Using
1.在雄性Sprague Dawley大鼠中,在用Clophen A50(市售PCB混合物)给药后1、2、4或8周测定了多氯联苯(PCB)的肝代谢和PCB甲基砜代谢物(MeSO2-PCBs)的形成。 。2.在实验期间,检查的PCB同系物的总浓度(sigmaPCB)从1周后的40微克g(-1)脂质(lw)降至8周后的4微克g(-1)lw。对于2,2',4,4',5,5'-六氯联苯(CB153),2,2',3,3',肝脏中PCB的50%减少估计为28、13和11天, 4,4',5-heptaCB(CB170)和2,2'3,4',5,5',6-heptaCB(CB187)。3.总的MeSO2-PCB(sigmaMeSO2-PCB)浓度从800升至1,020 ng g(-1)lw 在治疗的前2周内,此后在8周后降至120 ng g(-1)lw。3'-MeSO2-2,2',4,4',5-pentaC