Endocrine disrupting and carcinogenic effects of decabromodiphenyl ether

Front Endocrinol (Lausanne). 2023 Jun 2:14:1183815. doi: 10.3389/fendo.2023.1183815. eCollection 2023.

Abstract

Background: Decabromodiphenyl ether (BDE209), an essential industrial flame retardant that is widely used, has recently been reported to be increasing in human serum. Due to the structural similarity between BDE209 and thyroid hormones, its toxic effects on the thyroid are of particular concern.

Methods: Original articles in the PubMed database were collected using the terms "BDE209", "decabromodiphenyl ether", "endocrine disrupting", "thyroid", "carcinogenesis", "polybrominated diphenyl ethers", "PBDEs," and their synonyms from inception up to October of 2022.

Results: Of the 748 studies initially identified, 45 were selected, which emphasized the adverse effects of BDE209 on endocrine system. BDE209 may have a toxic effect not only on thyroid function but also on thyroid cancer tumorigenesis at multiple levels, such as by directly interfering with the TR, hypothalamic-pituitary-thyroid (HPT) axis, enzyme activity, and methylation. However, it is impossible to draw a definitive conclusion on the exact pathway of thyroid toxicity from BDE209.

Conclusions: Although the toxic effects of BDE209 on the thyroid have been well investigated, its tumorigenic effects remain unclear and further research is necessary.

Keywords: BDE209; carcinogenesis; endocrine disrupting; environmental exposure; thyroid hormone.

Publication types

  • Review
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Flame Retardants* / toxicity
  • Halogenated Diphenyl Ethers / toxicity
  • Humans
  • Thyroid Gland / metabolism
  • Water Pollutants, Chemical* / metabolism

Substances

  • Halogenated Diphenyl Ethers
  • Flame Retardants
  • Water Pollutants, Chemical

Grants and funding

This research was funded by the National Natural Science Foundation of China (Grant no. 81972500), the Science and Technology Innovation Plan of Science and Technology Commission of Shanghai Municipality (STCSM) (Grant no. 20Z11900304), the Natural Science Fund of the Science and Technology Commission of Shanghai Municipality (STCSM) (Grant no. 23ZR1448200), and the Clinical Research Fund of Shanghai Jiao Tong University Affiliated Sixth People’s Hospital (ZL 2020).