四溴双酚A
六溴环十二烷
阻燃剂
溴化阻燃剂
生物累积
十溴二苯醚
生殖毒性
化学
环境化学
精子
二苯醚
毒物动力学
毒性
多溴联苯醚
毒理
内分泌干扰物
精子发生
男科
有机化学
内分泌学
污染物
生物
医学
生物化学
内分泌系统
激素
作者
Yuan-Yuan Li,Zheyuan Ryan Shi,Yi-Ming Xiong,Xuan-Yue Chen,Lin Lv,Honglin Huang,Wenbin Liu,Jing Zhao,Xing Hong Li,Zhanfen Qin
标识
DOI:10.1021/acs.est.3c10560
摘要
Tetrabromobisphenol A-bis(2,3-dibromo-2-methylpropyl ether) (TBBPA-DBMPE) has come into use as an alternative to hexabromocyclododecane (HBCD), but it is unclear whether TBBPA-DBMPE has less hazard than HBCD. Here, we compared the bioaccumulation and male reproductive toxicity between TBBPA-DBMPE and HBCD in mice following long-term oral exposure after birth. We found that the concentrations of TBBPA-DBMPE in livers significantly increased with time, exhibiting a bioaccumulation potency not substantially different from HBCD. Lactational exposure to 1000 μg/kg/d TBBPA-DBMPE as well as 50 μg/kg/d HBCD inhibited testis development in suckling pups, and extended exposure up to adulthood resulted in significant molecular and cellular alterations in testes, with slighter effects of 50 μg/kg/d TBBPA-DBMPE. When exposure was extended to 8 month age, severe reproductive impairments including reduced sperm count, increased abnormal sperm, and subfertility occurred in all treated animals, although 50 μg/kg/d TBBPA-DBMPE exerted lower effects than 50 μg/kg/d HBCD. Altogether, all data led us to conclude that TBBPA-DBMPE exerted weaker male reproductive toxicity than HBCD at the same doses but exhibited bioaccumulation potential roughly equivalent to HBCD. Our study fills the data gap regarding the bioaccumulation and toxicity of TBBPA-DBMPE and raises concerns about its use as an alternative to HBCD.
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