Abstract：
:Tris (2-chloroethyl) phosphate (TCEP), a substitute for brominated flame retardants (FRs) that have been phased out of use, is frequently detected in aqueous environments. However, previous studies on its endocrine disrupting effects have mainly focused on terrestrial mammals. Here, to comprehensively evaluate the potential adverse effects of TCEP on aquatic vertebrates, zebrafish was used as a model to examine developmental phenotypes. The underlying mechanisms of toxicity of TCEP were further explored using in silico and in vivo approaches. In vivo results demonstrated morphologic changes and mortalities of zebrafish when exposed to high concentrations (14,250 and 28,500 μg TCEP/L). In silico results showed that TCEP can bind to and interact with nuclear receptors with different patterns. The combination of in vivo and in silico analyses indicated that receptors can influence each other at the molecular level and that ER, ThR, RXR and RyR were the key receptors influencing the transcriptional pathways. Our results demonstrate that TCEP has adverse effects at relatively low concentrations by affecting key receptors and genes of vertebrates. These results exhibited the need for further studies to evaluate the potential health risks of TCEP to human infants/children due to its high concentration in Chinese rivers (up to 3700 ng/L) and potential for human exposure.
journal_name
Chemospherejournal_title
Chemosphereauthors
Wu Y,Su G,Tang S,Liu W,Ma Z,Zheng X,Liu H,Yu Hdoi
10.1016/j.chemosphere.2016.10.038subject
Has Abstractpub_date
2017-02-01 00:00:00pages
122-130eissn
0045-6535issn
1879-1298pii
S0045-6535(16)31421-7journal_volume
168pub_type
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