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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Zhao, Xuesong Wang, Shutao Li, Dongmei You, Hong Ren, Xin |
| Description | Author Affiliation: Zhao X ( State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China) |
| Abstract | To investigate the effects of perchlorate on thyroid hormone disturbances induced by 2,2',4',4-tetrabromodiphenyl ether (BDE-47) via thyroid hormone (TH)-mediated pathways, zebrafish embryos were exposed to a combination of BDE-47 and PER from the time of fertilisation to 14 d (dpf). The whole-body content of TH and the expression of genes and proteins related to the hypothalamic-pituitary-thyroid (HPT) axis were analysed. Co-exposure to BDE-47 and PER decreased the body weight and increased malformation rates relative to the effects of exposure to only BDE-47. Compared with the exposure to BDE-47 alone, the exposure to a combination of BDE-47 (10 µg/L) and PER (3.5 mg/L) significantly up-regulated the expression of genes involved in TH synthesis (NIS and Nkx2.1a) and significantly down-regulated the expression of genes related to the regulation of the HPT axis (CRH and TSHß). The expression of TG at the gene and protein levels was significantly up-regulated, but the expression of TTR was significantly down-regulated in the co-exposures relative to BDE-47 treated alone. In addition, the larger reduction in the T4 level resulting from exposure to the mixture of BDE-47 and PER demonstrated that PER enhanced the thyroid-disruptive effects of BDE-47. These results help to elucidate the complicated chemical interactions and the molecular mechanism of action of these two TH disruptors. |
| File Format | HTM / HTML |
| ISSN | 13826689 |
| Issue Number | 3 |
| Volume Number | 36 |
| e-ISSN | 18727077 |
| Journal | Environmental Toxicology and Pharmacology |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2013-11-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Health Discipline Pharmacology Flame Retardants Toxicity Gene Expression Drug Effects Halogenated Diphenyl Ethers Hypothalamo-hypophyseal System Perchlorates Pharmacology Pituitary Gland Thyroid Gland Thyroid Hormones Biosynthesis Zebrafish Physiology Animals Blotting, Western Environmental Monitoring Metabolism Larva Rna Isolation & Purification Real-time Polymerase Chain Reaction Teratogens Thyroxine Triiodothyronine Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Health, Toxicology and Mutagenesis Medicine Toxicology Pharmacology |
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