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DNA & Genetic Damage

Effects of modulated microwave radiation at cellular telephone frequency (1.95 GHz) on X-ray-induced chromosome aberrations in human lymphocytes in vitro.

No Effects Found

Manti L, Braselmann H, Calabrese ML, Massa R, Pugliese M, Scampoli P, Sicignano G, Grossi G · 2008

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Cell phone radiation at 2.0 W/kg SAR may impair cellular DNA repair mechanisms, potentially making cells more vulnerable to damage from other sources.

Plain English Summary

Summary written for general audiences

Italian researchers exposed human blood cells to cell phone radiation (1.95 GHz UMTS signal) for 24 hours, then hit them with X-rays to see if the RF exposure made the radiation damage worse. While the cell phone signals didn't increase the number of damaged cells, they did cause a small but measurable increase in the severity of chromosome damage within each affected cell at the higher exposure level (2.0 W/kg SAR). This suggests RF radiation might interfere with the cell's ability to repair DNA damage from other sources.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1.95 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1.95 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

The study examined exposure from: 1.95 GHz Duration: 24 h

Study Details

This in vitro study was conducted to study the influence of 1.95 GHz UMTS modulated radio frequency exposure on X ray induced chromosome aberrations in human lymphocytes

Human peripheral blood lymphocytes were exposed in vitro to a UMTS signal (frequency carrier of 1.95...

No significant variations due to the UMTS exposure were found in the fraction of aberrant cells. How...

We conclude that, although the 1.95 GHz signal (UMTS modulated) does not exacerbate the yield of aberrant cells caused by ionizing radiation, the overall burden of X-ray-induced chromosomal damage per cell in first-mitosis lymphocytes may be enhanced at 2.0 W/kg SAR. Hence the SAR may either influence the repair of X-ray-induced DNA breaks or alter the cell death pathways of the damage response.

Cite This Study
Manti L, Braselmann H, Calabrese ML, Massa R, Pugliese M, Scampoli P, Sicignano G, Grossi G (2008). Effects of modulated microwave radiation at cellular telephone frequency (1.95 GHz) on X-ray-induced chromosome aberrations in human lymphocytes in vitro. Radiat Res. 169(5):575-583, 2008.
Show BibTeX
@article{l_2008_effects_of_modulated_microwave_3228,
  author = {Manti L and Braselmann H and Calabrese ML and Massa R and Pugliese M and Scampoli P and Sicignano G and Grossi G},
  title = {Effects of modulated microwave radiation at cellular telephone frequency (1.95 GHz) on X-ray-induced chromosome aberrations in human lymphocytes in vitro.},
  year = {2008},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/18439037/},
}
PubMed: 18439037

Cited By (34 papers)

Quick Questions About This Study

Italian researchers found that 1.95 GHz UMTS signals didn't increase the number of damaged blood cells after X-ray exposure. However, at 2.0 W/kg SAR, the cell phone radiation did cause slightly more severe chromosome damage within each affected cell, suggesting it may interfere with DNA repair processes.
A 2008 study found that 1.95 GHz UMTS radiation at 2.0 W/kg SAR increased chromosome damage severity by 0.11 exchanges per cell after X-ray exposure. This suggests cell phone radiation may impair the cell's ability to properly repair DNA breaks from other radiation sources.
After 24 hours of 1.95 GHz UMTS exposure, human lymphocytes showed no increase in the number of damaged cells. However, at higher exposure levels (2.0 W/kg SAR), the severity of existing chromosome damage increased slightly, indicating potential interference with cellular repair mechanisms.
Research on 1.95 GHz UMTS signals found no direct harm to human blood cells during 24-hour exposure. The radiation didn't kill more cells or create new damage, but it did slightly worsen chromosome damage from X-rays at 2.0 W/kg SAR levels.
A 2008 Italian study suggests 1.95 GHz UMTS radiation may alter cellular damage response pathways. While it didn't increase cell death or create new DNA breaks, it enhanced the severity of X-ray-induced chromosome damage, possibly by affecting repair mechanisms or cell death processes.