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Absence of neurotoxicity and lack of neurobehavioral consequences due to exposure to tetrabromobisphenol A (TBBPA) exposure in humans, animals and zebrafish.
Archives of Toxicology ( IF 4.8 ) Pub Date : 2019-11-22 , DOI: 10.1007/s00204-019-02627-y
Sam Kacew 1 , A Wallace Hayes 2
Affiliation  

Tetrabromobisphenol A (2,2',6,6'-tetrabromo-4,4'-isopropylidenediphenol, CAS no. 79-94-7) (TBBPA) is an effective brominated flame retardant present in many consumer products whose effectiveness is attributable to its ability to retard flames and consequently save human lives. Toxicokinetic studies revealed that TBBPA when absorbed via the gastrointestinal tract is rapidly metabolized to glucuronide or sulfate metabolites which are rapidly eliminated by the kidney. TBBPA does not accumulate in the body and there is no evidence that the parent compound is present in the brain. Although this brominated flame retardant was detected in human breast milk and serum, there was no evidence that TBBPA reached the brain in in vivo animal studies as reflected by the absence of neuropathological, neurotoxic, or behavioral alterations indicating that the central nervous system is not a target tissue. These animal investigations were further supported by use of the larval/embryo observations that TBBPA did not produce behavioral changes in a larval/embryo zebrafish a model of chemical-induced neurotoxicity. Although some protein expressions were increased, deceased or not affected in the blood-brain barrier indicating no evidence that TBBPA entered the brain, the changes were contradictory, or gender related, and behavior was not affected supporting that this compound was not neurotoxic. Taken together, TBBPA does not appear to target the brain and is not considered as a neurotoxicant.

中文翻译:

由于在人,动物和斑马鱼中暴露于四溴双酚A(TBBPA),因此没有神经毒性,也没有神经行为的后果。

四溴双酚A(2,2',6,6'-四溴-4,4'-异丙基二烯二酚,CAS号79-94-7)(TBBPA)是一种有效的溴化阻燃剂,存在于许多消费品中,其有效性可归因于它具有阻止火焰并因此挽救人类生命的能力。毒代动力学研究表明,TBBPA通过胃肠道吸收后会迅速代谢为葡萄糖醛酸或硫酸盐代谢物,这些代谢物会被肾脏迅速清除。TBBPA不会在体内积聚,也没有证据表明母体化合物存在于大脑中。尽管在人母乳和血清中检测到了这种溴化阻燃剂,但尚无证据表明在体内动物研究中,TBBPA到达了大脑,这是由于缺乏神经病理学,神经毒性,或行为改变,表明中枢神经系统不是目标组织。这些动物研究得到了幼虫/胚胎观察的进一步支持,该观察结果表明,TBBPA不会在幼虫/胚胎斑马鱼(化学诱导的神经毒性模型)中产生行为变化。尽管血脑屏障中的某些蛋白质表达增加,减少或未受影响,这表明没有证据表明TBBPA进入大脑,这种变化是矛盾的或与性别有关的,并且行为也没有受到影响,从而证明该化合物没有神经毒性。两者合计,TBBPA似乎没有针对大脑,也不被认为是神经毒性的。这些动物研究得到了幼虫/胚胎观察的进一步支持,该观察结果表明,TBBPA不会在幼虫/胚胎斑马鱼(化学诱导的神经毒性模型)中产生行为变化。尽管血脑屏障中的某些蛋白质表达增加,减少或未受影响,这表明没有证据表明TBBPA进入大脑,这种变化是矛盾的或与性别有关的,并且行为也没有受到影响,从而证明该化合物没有神经毒性。两者合计,TBBPA似乎没有针对大脑,也不被认为是神经毒剂。这些动物研究得到了幼虫/胚胎观察的进一步支持,该观察结果表明,TBBPA不会在幼虫/胚胎斑马鱼(化学诱导的神经毒性模型)中产生行为变化。尽管血脑屏障中的某些蛋白质表达增加,减少或未受影响,这表明没有证据表明TBBPA进入大脑,这种变化是矛盾的或与性别有关的,并且行为也没有受到影响,从而证明该化合物没有神经毒性。两者合计,TBBPA似乎没有针对大脑,也不被认为是神经毒性的。这些变化是矛盾的,或与性别有关,并且行为没有受到影响,证明该化合物无神经毒性。两者合计,TBBPA似乎没有针对大脑,也不被认为是神经毒剂。这些变化是矛盾的,或与性别有关,并且行为没有受到影响,证明该化合物无神经毒性。两者合计,TBBPA似乎没有针对大脑,也不被认为是神经毒剂。
更新日期:2019-11-22
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