Microwave induced alteration in the neuron specific enolase gene expression.

Bioeffects Seen

Verma M, Dutta SK. · 1993

Microwave radiation at 0.05 mW/kg altered cancer marker genes, showing biological effects at levels 10,000 times below cell phone exposures.

Plain English Summary

Summary written for general audiences

Researchers exposed cells containing neuron-specific enolase genes to low-level microwave radiation (915 MHz) and found it increased production of neuron-specific enolase, a protein that serves as a diagnostic marker for brain and lung cancers. The exposure level was extremely low at 0.05 milliwatts per kilogram, far below current safety limits. This suggests that even minimal microwave exposure can alter the expression of genes linked to cancer markers.

Why This Matters

This 1993 study reveals a concerning biological response to microwave radiation at exposure levels thousands of times lower than what regulatory agencies consider safe. The elevation of neuron-specific enolase is particularly significant because this protein serves as a clinical marker for neurological damage and certain cancers. What makes this research especially noteworthy is the extraordinarily low SAR level used - 0.05 milliwatts per kilogram is far below typical cell phone exposures, which range from 0.5 to 2 watts per kilogram. The study demonstrates that biological systems can respond to EMF exposures at levels previously assumed to be harmless, challenging the foundation of current safety standards that focus solely on heating effects rather than biological responses.

Exposure Details

SAR: 0.00005 W/kg
Source/Device: 915 MHz, 16 Hz AM

Where This Falls on the Concern Scale

Study Details

The aim of this study is to investigate Microwave induced alteration in the neuron specific enolase gene expression.

Exposure of pNGE7, a recombinant clone containing the coding and regulatory sequences for the expres...

Cite This Study

Verma M, Dutta SK. (1993). Microwave induced alteration in the neuron specific enolase gene expression. Cancer Biochem Biophys. 13(4):239-244, 1993.

Show BibTeX

@article{m_1993_microwave_induced_alteration_in_1407,
  author = {Verma M and Dutta SK.},
  title = {Microwave induced alteration in the neuron specific enolase gene expression.},
  year = {1993},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/8521373/},
}

PubMed: 8521373

Cited By (4 papers)

Synopsis of IEEE Std C95.1™-2019 “IEEE Standard for Safety Levels With Respect to Human Exposure to Electric, Magnetic, and Electromagnetic Fields, 0 Hz to 300 GHz”
William H. Bailey et al. (2019) - 594 citations
Extremely high frequency electromagnetic fields at low power density do not affect the division of exponential phase Saccharomyces cerevisiae cells.
Pascal Gos et al. (1997) - 55 citations
DNA sequences encoding enolase are remarkably conserved from yeast to mammals.
M. Verma, S. Dutta (1994) - 31 citations
Frequency-dependent alterations in enolase activity in Escherichia coli caused by exposure to electric and magnetic fields.
S. Dutta et al. (1994) - 29 citations

Quick Questions About This Study

Yes, a 1993 study found that 915 MHz microwave radiation at extremely low power (0.05 mW/kg) increased production of neuron-specific enolase, a protein used as a diagnostic marker for brain and lung cancers. This occurred at levels far below current safety limits.

Research shows that 915 MHz radiation with 16 Hz amplitude modulation elevated neuron-specific enolase (NSE) levels in cells. NSE serves as a diagnostic marker for neuron and lung cancer, suggesting even minimal microwave exposure can alter cancer-related protein expression.

A study demonstrated that microwave radiation at just 0.05 milliwatts per kilogram (SAR) altered gene expression for neuron-specific enolase. This extremely low exposure level is thousands of times below current safety limits yet still produced measurable biological effects.

Exposure to 16 Hz amplitude-modulated 915 MHz radiation increased production of neuron-specific enolase in laboratory cells. Researchers used ion-exchange chromatography to separate and measure changes in both neuronal and non-neuronal enolase activity, confirming altered protein expression.

Yes, researchers found that microwave exposure at 0.05 mW/kg increased neuron-specific enolase, a brain cancer diagnostic marker. This exposure level was far below current safety standards, suggesting that even minimal microwave radiation can influence genes linked to cancer markers.