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Effects of 5-HT1 and 5-HT 2 Receptor Agonists on Electromagnetic Field-Induced Analgesia in Rats.

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Ozdemir E, Demirkazik A, Taskıran AS, Arslan G. · 2019

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Serotonin 5-HT1 and 5-HT2 receptors play an important role in EMF-induced analgesia in rats, according to researchers.

Plain English Summary

Summary written for general audiences

Researchers exposed 66 adult male Wistar albino rats to alternating 50 Hz and 5 mT EMF for 2 hours a day for 15 days, then injected serotonin receptor agonists or antagonists before analgesia tests. Administration of serotonin HCl to MF-exposed rats produced a significant increase in percent maximal possible effect compared with the EMF group. Injection of WAY 100635 to MF-exposed rats produced a significant decrease in analgesic activity, while DOI hydrochloride significantly increased % MPE values compared with the EMF group. The researchers suggested that serotonin 5-HT1 and 5-HT2 receptors play an important role in EMF-induced analgesia, but noted that further research studies are necessary to understand the mechanism.

Why This Matters

The 5-HT1 agonist serotonin HCl was injected at 4 mg/kg, the 5-HT1 antagonist WAY 100635 at 0.04 mg/kg, the 5-HT2 receptor agonist DOI hydrochloride at 4 mg/kg, and the 5-HT2 antagonist SB 204741 at 0.5 mg/kg. Similarly, the 5-HT2 antagonist SB 204741 reduced % MPE values compared with the EMF group. Statistical analysis used analysis of variance, with multiple comparisons determined by Tukey's test.

Exposure Details

Magnetic Field
5 mT
Source/Device
50 Hz
Exposure Duration
2 h a day for 15 days

Exposure Context

This study used 5 mT for magnetic fields:

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 5 mTExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Extreme Concern range (Building Biology)This level is 25 times the FCC limit
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 50 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 50 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Study Details

The aim of the present study was to investigate the effects of 5-HT1 and 5-HT2 receptor agonists (serotonin HCl and 2,5-dimethoxy-4-iodoamphetamine [DOI] hydrochloride) on EMF-induced analgesia.

In total, 66 adult male Wistar albino rats with an average body mass of 225 ± 13 g were used in this...

Administration of serotonin HCl MF (5 mT)-exposed rats produced a significant increase in percent ma...

In conclusion, our results suggested that serotonin 5-HT1 and 5-HT2 receptors play an important role in EMF-induced analgesia; however, further research studies are necessary to understand the mechanism. Bioelectromagnetics.

Cite This Study
Ozdemir E, Demirkazik A, Taskıran AS, Arslan G. (2019). Effects of 5-HT1 and 5-HT 2 Receptor Agonists on Electromagnetic Field-Induced Analgesia in Rats. Bioelectromagnetics. 2019 May 31. doi: 10.1002/bem.22196.
Show BibTeX
@article{e_2019_effects_of_5ht1_and_689,
  author = {Ozdemir E and Demirkazik A and Taskıran AS and Arslan G.},
  title = {Effects of 5-HT1 and 5-HT 2 Receptor Agonists on Electromagnetic Field-Induced Analgesia in Rats.},
  year = {2019},
  doi = {10.1002/bem.22196},
  url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/bem.22196},
}

Quick Questions About This Study

Rats were subjected to repeated exposures of alternating 50 Hz and 5 mT EMF for 2 hours a day for 15 days.
Administration of serotonin HCl to MF-exposed rats produced a significant increase in percent maximal possible effect compared with the EMF group.
Injection of WAY 100635 to MF-exposed rats produced a significant decrease in analgesic activity.
The results suggested that serotonin 5-HT1 and 5-HT2 receptors play an important role in EMF-induced analgesia, though further research studies are necessary to understand the mechanism.
The study used 66 adult male Wistar albino rats with an average body mass of 225 ± 13 g.