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Oxidative Stress

Effect of exposure to the edge signal on oxidative stress in brain cell models.

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Poulletier de Gannes F, Haro E, Hurtier A, Taxile M, Ruffié G, Billaudel B, Veyret B, Lagroye I. · 2011

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EDGE cell phone signals showed no oxidative stress effects on brain cells even at 10 W/kg exposure levels.

Plain English Summary

Summary written for general audiences

French researchers exposed human brain cells (neurons, astrocytes, and microglia) to EDGE cell phone signals at 1800 MHz for up to 24 hours, measuring whether this caused oxidative stress (cellular damage from free radicals). Even at high exposure levels of 10 W/kg - far exceeding typical phone use - the radiofrequency radiation did not increase production of harmful reactive oxygen species in any of the brain cell types tested.

Why This Matters

This study contributes important data to our understanding of how cell phone radiation affects brain tissue at the cellular level. The researchers used exposure levels of 10 W/kg, which is significantly higher than the 2 W/kg limit set by most regulatory agencies and far exceeds typical phone use (usually under 1 W/kg during calls). The fact that no oxidative stress was detected even at these elevated levels suggests that EDGE signals may not trigger this particular pathway of cellular damage. However, this single study examines just one biological mechanism - oxidative stress - over relatively short exposure periods. The reality is that EMF effects on the brain likely involve multiple pathways beyond reactive oxygen species production. While these results are reassuring for this specific endpoint, they don't address other potential mechanisms like calcium channel disruption, blood-brain barrier permeability, or long-term cumulative effects that other research has identified.

Exposure Details

SAR
2 and 10 W/kg

Exposure Context

This study used 2 and 10 W/kg for SAR (device absorption):

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: 2 and 10 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern rangeFCC limit is 1x higher than this level

Study Details

In this study we investigated the effect of the Enhanced Data rate for GSM Evolution (EDGE) signal on cells of three human brain cell lines, SH-SY5Y, U87 and CHME5, used as models of neurons, astrocytes and microglia, respectively, as well as on primary cortical neuron cultures.

SXC-1800 waveguides (IT'IS-Foundation, Zürich, Switzerland) were modified for in vitro exposure to t...

All cells tested responded to rotenone treatment by increasing ROS production.

These findings indicate that exposure to the EDGE signal does not induce oxidative stress under these test conditions, including 10 W/kg. Our results are in agreement with earlier findings that RF radiation alone does not increase ROS production.

Cite This Study
Poulletier de Gannes F, Haro E, Hurtier A, Taxile M, Ruffié G, Billaudel B, Veyret B, Lagroye I. (2011). Effect of exposure to the edge signal on oxidative stress in brain cell models. Radiat Res. 175(2):225-230, 2011.
Show BibTeX
@article{f_2011_effect_of_exposure_to_1274,
  author = {Poulletier de Gannes F and Haro E and Hurtier A and Taxile M and Ruffié G and Billaudel B and Veyret B and Lagroye I.},
  title = {Effect of exposure to the edge signal on oxidative stress in brain cell models.},
  year = {2011},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/21268716/},
}
PubMed: 21268716

Cited By (27 papers)

Quick Questions About This Study

No, a 2011 French study found that EDGE signals at 1800 MHz did not cause oxidative stress in human brain cells, even at extremely high exposure levels of 10 W/kg - far exceeding typical phone use levels.
Research shows 24-hour exposure to EDGE cell phone signals does not harm human neurons, astrocytes, or microglia cells. The study found no increase in harmful reactive oxygen species production in any brain cell type tested.
Studies indicate that even 10 W/kg radiofrequency exposure - levels much higher than normal cell phone use - does not increase oxidative stress or cellular damage in human brain tissue models including neurons and support cells.
No, EDGE mobile signals do not cause free radical damage in astrocytes or other brain cells. French researchers confirmed that radiofrequency radiation alone does not increase reactive oxygen species production in brain cell models.
Research suggests that radiofrequency exposure up to 10 W/kg does not cause oxidative stress in human brain cells. This finding supports earlier research showing RF radiation alone doesn't increase harmful cellular reactions.