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Acute exposure to low-level CW and GSM-modulated 900 MHz radiofrequency does not affect Ba 2+ currents through voltage-gated calcium channels in rat cortical neurons.

No Effects Found

Platano D, Mesirca P, Paffi A, Pellegrino M, Liberti M, Apollonio F, Bersani F, Aicardi G · 2007

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Acute exposure to low-level 900 MHz radiofrequency fields, either continuous wave or GSM-modulated, did not significantly alter barium currents through voltage-gated calcium channels in rat cortical neurons.

Plain English Summary

Summary written for general audiences

Researchers studied the non-thermal effects of radiofrequency electromagnetic fields on barium currents through voltage-gated calcium channels in primary cultures of rat cortical neurons using the patch-clamp technique. Neurons were exposed for one to three periods of 90 seconds to 900 MHz continuous wave or GSM-modulated signals during whole-cell recording at specific absorption rates of 2 W/kg for both modulation types. Single or multiple acute exposures to either continuous wave or GSM-modulated 900 MHz fields did not significantly alter the current amplitude or the current-voltage relationship through voltage-gated calcium channels.

Exposure Details

SAR
2 W/kg
Source/Device
GSM‐modulated 900 MHz

Exposure Context

This study used 2 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 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern range (Building Biology)This level is 1 times the FCC limit
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

Study Details

We have studied the non‐thermal effects of radiofrequency (RF) electromagnetic fields (EMFs) on Ba2+ currents (equation image) through voltage‐gated calcium channels (VGCC), recorded in primary cultures of rat cortical neurons using the patch‐clamp technique.

To assess whether low‐level acute RF field exposure could modify the amplitude and/or the voltage‐de...

The results obtained indicate that single or multiple acute exposures to either CW or GSM‐modulated ...

Cite This Study
Platano D, Mesirca P, Paffi A, Pellegrino M, Liberti M, Apollonio F, Bersani F, Aicardi G (2007). Acute exposure to low-level CW and GSM-modulated 900 MHz radiofrequency does not affect Ba 2+ currents through voltage-gated calcium channels in rat cortical neurons. Bioelectromagnetics. 28(8):599-607, 2007.
Show BibTeX
@article{d_2007_acute_exposure_to_lowlevel_2795,
  author = {Platano D and Mesirca P and Paffi A and Pellegrino M and Liberti M and Apollonio F and Bersani F and Aicardi G},
  title = {Acute exposure to low-level CW and GSM-modulated 900 MHz radiofrequency does not affect Ba 2+ currents through voltage-gated calcium channels in rat cortical neurons.},
  year = {2007},
  doi = {10.1002/bem.20345},
  url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/bem.20345},
}

Cited By (38 papers)

Quick Questions About This Study

The study investigated the non-thermal effects of radiofrequency electromagnetic fields on barium currents through voltage-gated calcium channels in rat cortical neurons.
Neurons were exposed for one to three periods of 90 seconds to 900 MHz continuous wave or GSM-modulated signals at a specific absorption rate of 2 W/kg.
Single or multiple acute exposures to either continuous wave or GSM-modulated 900 MHz fields did not significantly alter the current amplitude or the current-voltage relationship.
Primary cultures of rat cortical neurons were used for the patch-clamp recordings.
The specific absorption rates were 2 W/kg for continuous wave and 2 W/kg time average for GSM-modulated signals.