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Cellular Effects115 citations

Bacterial response to the exposure of 50 Hz electromagnetic fields

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Authors not listed · 2008

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Exposure to 50 Hz EMF increased E. coli viability and caused morphological changes including coccoid cells and lengthened forms.

Plain English Summary

Summary written for general audiences

Researchers exposed Escherichia coli ATCC 700926 to 50 Hz electromagnetic fields at 0.1, 0.5, and 1.0 mT and compared them with sham-exposed controls. Exposed and control samples had similar total and culturable counts. Exposed samples showed increased cell viability after 24 hours of re-incubation outside the solenoid. Exposure for 20–120 minutes caused significant morphological changes including coccoid cells and atypical lengthened forms. DNA fingerprinting showed no changes, while RNA-AFLP analysis revealed some differences at each field intensity.

Why This Matters

The study aimed to investigate how prokaryotic microorganisms adapt to environmental stress from extremely low frequency electromagnetic fields. The authors concluded that 50 Hz EMF acts as a stressing factor on bacteria and that bacteria can serve as a model for studying acute and chronic ELF-EMF effects.

Exposure Information

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

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (2008). Bacterial response to the exposure of 50 Hz electromagnetic fields.
Show BibTeX
@article{bacterial_response_to_the_exposure_of_50_hz_electromagnetic_fields_ce2197,
  author = {Unknown},
  title = {Bacterial response to the exposure of 50 Hz electromagnetic fields},
  year = {2008},
  doi = {10.1002/bem.20391},
  
}

Quick Questions About This Study

E. coli cultures were exposed to 50 Hz electromagnetic fields at 0.1, 0.5, and 1.0 mT for 20–120 minutes.
Exposed and control samples displayed similar total and culturable counts.
Exposed samples showed increased cell viability after 24 hours of re-incubation outside the solenoid compared to controls.
Exposure caused a significant change in morphotype with coccoid cells aggregated in clusters and atypical lengthened forms suggesting altered cell division.
DNA fingerprinting showed no changes, but RNA-AFLP analysis revealed some differences at each field intensity.