代谢
多溴联苯(PBBs)可以通过口服、吸入和皮肤途径被吸收。由于它们的亲脂性,尤其是高溴代的多溴联苯,倾向于在富含脂质的组织中积累,如肝脏、脂肪、皮肤和母乳。某些多溴联苯化合物通过由苯巴比妥诱导的细胞色素P-450类型的微粒体单加氧酶系统进行代谢。代谢速率可能取决于溴取代模式。低溴含量的多溴联苯同系物转化为主要在尿液中排出的羟基衍生物。高溴代同系物要么被保留,要么在粪便中不变排出。(L628)
PBBs can be absorbed via oral, inhalation, and dermal routes. Due to their lipophilic nature, PBBs, especially the highly brominated congeners, tend to accumulate in lipid-rich tissues such as the liver, adipose, skin, and breast milk. Certain PBB compounds are metabolized by the microsomal monooxygenase system catalyzed by cytochrome P-450 of the type induced by phenobarbital. The rate of metabolism may depends on the bromine substitution pattern. PBB congeners of low bromine content are transformed into hydroxylated derivatives that are predominately eliminated in the urine. Highly brominated congeners are either retained or excreted unchanged in the feces. (L628)
来源:Toxin and Toxin Target Database (T3DB)