代谢
锑在全身上下分布广泛。头发和皮肤含有最高水平的锑。肾上腺、肺、大肠、气管、小脑和肾脏也含有相对较高的锑。血液是将吸收的锑运输到身体各个组织隔室的主要载体。锑是一种金属,因此不会发生分解代谢。锑可以与巯基和磷酸共价相互作用,以及与许多内源性配体(如蛋白质)发生可逆的绑定作用。目前尚不清楚这些相互作用在毒理学上是否具有重要意义。锑通过尿液和粪便排出体外。部分粪便中的锑可能代表未被吸收的锑,它通过粘膜纤毛活动从肺部清除到食管,然后进入消化道。溴主要通过吸入吸收,但也可以通过皮肤接触进入人体。溴盐可以摄入。由于溴的反应性,它迅速形成溴化物,并可能沉积在组织中,取代其他卤素。(L626, L741)
Antimony is widely distributed throughout the body. The hair and skin contain the highest levels of antimony. The adrenal glands, lung, large intestine, trachea, cerebellum, and kidneys also contain relatively high levels of antimony. Blood is the main vehicle for the transport of absorbed antimony to various tissue compartments of the body. Antimony is a metal and, therefore, does not undergo catabolism. Antimony can covalently interact with sulfhydryl groups and phosphate, as well as numerous reversible binding interactions with endogenous ligands (e.g., proteins). It is not known if these interactions are toxicologically significant. Antimony is excreted via the urine and feces. Some of the fecal antimony may represent unabsorbed antimony that is cleared from the lung via mucociliary action into the esophagus to the gastrointestinal tract. Bromine is mainly absorbed via inhalation, but may also enter the body through dermal contact. Bromine salts can be ingested. Due to its reactivity, bromine quickly forms bromide and may be deposited in the tissues, displacing other halogens. (L626, L741)
来源:Toxin and Toxin Target Database (T3DB)