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2-GHz band CW and W-CDMA modulated radiofrequency fields have no significant effect on cell proliferation and gene expression profile in human cells.

No Effects Found

Sekijima M, Takeda H, Yasunaga K, Sakuma N, Hirose H, Nojima T, Miyakoshi J. · 2010

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Researchers found no significant effect on cell proliferation or gene expression in human cell lines exposed to 2.1425 GHz CW and W-CDMA fields at SARs up to 800 mW/kg for up to 96 hours.

Plain English Summary

Summary written for general audiences

The study examined cell proliferation and gene expression in three human cell lines after exposure to 2.1425 GHz continuous wave and W-CDMA modulated radiofrequency fields. Cells were exposed at specific absorption rates of 80, 250, or 800 mW/kg for up to 96 hours. No significant differences in cell growth or viability were found between exposed groups and sham controls, and less than 1% of genes showed altered expression.

Exposure Details

SAR
0.08, 0.25, 0.8 W/kg
Source/Device
2.1425 GHz
Exposure Duration
96 h

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 0.08, 0.25, 0.8 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Severe Concern range (Building Biology)FCC limit is 20 times higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 2.14 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 2.14 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

We investigated the mechanisms by which radiofrequency (RF) fields exert their activity, and the changes in both cell proliferation and the gene expression profile in the human cell lines, A172 (glioblastoma), H4 (neuroglioma), and IMR-90 (fibroblasts from normal fetal lung) following exposure to 2.1425 GHz continuous wave (CW) and Wideband Code Division Multiple Access (W-CDMA) RF fields at three field levels.

During the incubation phase, cells were exposed at the specific absorption rates (SARs) of 80, 250, ...

No significant differences in cell growth or viability were observed between any test group exposed ...

These results suggest that RF exposure up to the limit of whole-body average SAR levels as specified in the ICNIRP guidelines is unlikely to elicit a general stress response in the tested cell lines under these conditions.

Cite This Study
Sekijima M, Takeda H, Yasunaga K, Sakuma N, Hirose H, Nojima T, Miyakoshi J. (2010). 2-GHz band CW and W-CDMA modulated radiofrequency fields have no significant effect on cell proliferation and gene expression profile in human cells. J Radiat Res. 51(3):277-284, 2010.
Show BibTeX
@article{m_2010_2ghz_band_cw_and_3389,
  author = {Sekijima M and Takeda H and Yasunaga K and Sakuma N and Hirose H and Nojima T and Miyakoshi J.},
  title = {2-GHz band CW and W-CDMA modulated radiofrequency fields have no significant effect on cell proliferation and gene expression profile in human cells.},
  year = {2010},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/20215713/},
}

Cited By (26 papers)

Quick Questions About This Study

The study used A172 glioblastoma, H4 neuroglioma, and IMR-90 fetal lung fibroblast cell lines.
No significant differences in cell growth or viability were observed between exposed groups and sham controls.
Less than 1% of the approximately 16,000 to 19,000 genes analyzed showed altered expression after exposure.