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Related Experiment Video

Updated: Aug 27, 2025

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band
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A comprehensive analysis on the relationship between BDE-209 exposure and erectile dysfunction.

Xuan Zhou1, Lebin Song1, Rong Cong1

  • 1Department of Urology, The First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, China.

Chemosphere
|September 23, 2022
PubMed
Summary

Decabromodiphenyl ether (BDE-209) exposure caused erectile dysfunction in male rats by damaging corpus cavernosum endothelial cells. This flame retardant may impact downstream genes via transcription factors, leading to dysfunction.

Keywords:
BDE-209BioinformaticsDecabromodiphenylErectile dysfunctionMolecular docking

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Area of Science:

  • Environmental Toxicology
  • Reproductive Toxicology
  • Endocrinology

Background:

  • Decabromodiphenyl ether (BDE-209) is a widely used brominated flame retardant.
  • While reproductive system damage is known, its impact on erectile function is unclear.

Purpose of the Study:

  • To investigate if BDE-209 induces erectile dysfunction in male Sprague-Dawley rats.
  • To elucidate the underlying mechanisms of BDE-209-induced erectile dysfunction.

Main Methods:

  • Oral exposure of pubertal male rats to BDE-209 (0, 5, 50, 500 mg/kg/day) for 28 days.
  • Measurement of intracavernous pressure (ICP) and mean arterial pressure (MAP).
  • Evaluation of fibrosis, apoptosis, and endothelial cell function (in vitro and in vivo).
  • Bioinformatics analysis (CTD, ChEA3) and molecular docking to identify regulatory pathways.

Main Results:

  • BDE-209 exposure led to erectile dysfunction in rats.
  • Corpus cavernosum tissue showed increased fibrosis and apoptosis.
  • Endothelial function was impaired in rat and human endothelial cells treated with BDE-209.
  • Bioinformatics identified five transcription factors (NFKB1, NR3C1, E2F5, REL, IRF4) potentially regulating genes involved in endothelial dysfunction.

Conclusions:

  • BDE-209 contributes to erectile dysfunction by causing corpus cavernosum endothelial dysfunction.
  • The mechanism involves BDE-209 binding to transcription factors, affecting downstream interactive genes.
  • This study highlights a novel pathway for BDE-209 toxicity impacting male reproductive health.