当前位置: X-MOL 学术Environ. Sci. Technol. Lett. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Antagonistic Estrogenic Effects Displayed by Bisphenol AF and Perfluorooctanoic Acid on Zebrafish (Danio rerio) at an Early Developmental Stage
Environmental Science & Technology Letters ( IF 8.9 ) Pub Date : 2018-11-02 , DOI: 10.1021/acs.estlett.8b00559
Pengyu Chen 1 , Qiang Wang 1 , Meng Chen 1 , Jing Yang 1 , Ruihan Wang 2 , Wenjue Zhong 1 , Lingyan Zhu 1 , Lihua Yang 3
Affiliation  

Bisphenol AF (BPAF) and perfluorooctanoic acid (PFOA) may display combined estrogenic effects on aquatic organisms, because BPAF and PFOA are widely present in the aquatic environment and reported to have estrogenic effects on aquatic organisms. In this study, zebrafish embryos were exposed to BPAF, PFOA, and binary mixtures of both for 7 days using estradiol (E2) and vitellogenin (VTG) as biomarkers. The estrogen receptor α (erα) expression and VTG level increased upon single exposures to BPAF (0.0372 and 0.372 μM) and PFOA (1.21 and 12.1 μM). Although both of them stimulated the P450 aromatase level, they displayed opposite effects on sex hormone-binding globulin. As a result, BPAF stimulated the E2 level but PFOA depressed it, and an antagonist effect on the E2 level was observed in the binary mixtures. The significant correlation between VTG level and erα expression suggested erα played a vital role in VTG synthesis. BPAF and PFOA could compete for the key common residue, Arg362, in the binding pocket of ERα, inducing antagonistic effects on erα-driven transcriptions. Thus, BPAF and PFOA displayed an antagonistic estrogenic effect on zebrafish during an early development stage.

中文翻译:

双酚AF和全氟辛酸对斑马鱼(Danio rerio)早期发育的拮抗雌激素作用。

双酚AF(BPAF)和全氟辛酸(PFOA)可能对水生生物显示出综合的雌激素作用,因为BPAF和PFOA广泛存在于水生环境中,并且据报道对水生生物具有雌激素作用。在这项研究中,使用雌二醇(E2)和卵黄蛋白原(VTG)作为生物标记物,将斑马鱼胚胎暴露于BPAF,PFOA和二者的二元混合物中,共7天。雌激素受体α(erα)暴露于BPAF(0.0372和0.372μM)和PFOA(1.21和12.1μM)时,表达和VTG水平增加。尽管它们都刺激P450芳香化酶水平,但它们对性激素结合球蛋白的作用却相反。结果,BPAF刺激了E2水平,但是PFOA降低了它,并且在二元混合物中观察到了对E2水平的拮抗作用。VTG水平与erα表达之间的显着相关性表明erα在VTG合成中起着至关重要的作用。BPAF和PFOA可以竞争ERα结合口袋中的关键共有残基Arg362,从而诱导对erα驱动的转录的拮抗作用。因此,在早期发育阶段,BPAF和PFOA对斑马鱼显示出拮抗性雌激素作用。
更新日期:2018-11-05
down
wechat
bug