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An in vitro study of the effects of exposure to a GSM signal in two human cell lines: monocytic U937 and neuroblastoma SK- N-SH

No Effects Found

Authors not listed · 2006

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Laboratory study found no effects from low-power GSM radiation on isolated cells, but limited scope doesn't prove real-world mobile phone safety.

Plain English Summary

Summary written for general audiences

Researchers exposed two types of human cells (brain-like neuroblastoma cells and immune monocyte cells) to GSM mobile phone radiation at 900 MHz for laboratory testing. Using multiple analysis methods including gene expression, protein levels, and cell health markers, they found no significant biological effects from the radiofrequency exposure compared to unexposed control cells.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 900 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 900 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale
Cite This Study
Unknown (2006). An in vitro study of the effects of exposure to a GSM signal in two human cell lines: monocytic U937 and neuroblastoma SK- N-SH.
Show BibTeX
@article{an_in_vitro_study_of_the_effects_of_exposure_to_a_gsm_signal_in_two_human_cell_lines_monocytic_u937_and_neuroblastoma_sk_n_sh_ce2802,
  author = {Unknown},
  title = {An in vitro study of the effects of exposure to a GSM signal in two human cell lines: monocytic U937 and neuroblastoma SK- N-SH},
  year = {2006},
  doi = {10.1016/j.cellbi.2006.06.001},
  
}
DOI: 10.1016/j.cellbi.2006.06.001PubMed: 16877012

Quick Questions About This Study

No significant effects were found on SK-N-SH neuroblastoma cells exposed to 900 MHz GSM-like radiation. Researchers tested gene expression, protein levels, cell cycle, and cell death markers, finding no differences between exposed and control cells.
The study used a specific absorption rate (SAR) of 0.2 W/kg, which is significantly lower than current regulatory limits of 1.6-2.0 W/kg for mobile phones. This low exposure level may not reflect typical smartphone usage patterns.
The study found no effects on U937 monocytic immune cells exposed to 900 MHz radiation pulsed at 217 Hz. Cell viability and cell cycle analysis showed no significant differences between exposed and unexposed cells.
No changes in heat shock protein levels were detected in neuroblastoma cells exposed to GSM-like radiation. Heat shock proteins typically increase when cells experience stress, so unchanged levels suggest no cellular stress response occurred.
The abstract doesn't specify exposure duration, which is a significant limitation. Short-term laboratory exposures may miss biological effects that develop only with chronic, long-term exposure patterns typical of actual mobile phone use.