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Neurotoxic effects of 3.5 GHz GSM-like RF exposure on cultured DRG neurons: a mechanistic insight into oxidative and apoptotic pathways

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Bektas H, Seker A, Ustun R, Dogu S · 2026

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Non-thermal GSM-like 3.5 GHz RF-EMF exposure significantly reduced viability, elevated ROS, and activated mitochondrial apoptotic pathways in primary mouse DRG neurons.

Plain English Summary

Summary written for general audiences

Researchers exposed primary mouse dorsal root ganglion cultures to pulsed 3.5 GHz GSM-like RF-EMF for 1 to 24 hours in a GTEM-based setup. Dosimetry confirmed non-thermal exposure with temperature differences below 0.1°C. They assessed cell viability, ROS levels, mitochondrial apoptotic markers (Bax, Bcl-2, cytochrome c, caspase-3), and p75^NTR using blinded confocal analysis. Exposure caused a time-dependent reduction in viability, robust ROS elevations, increased Bax and caspase-3, decreased Bcl-2, and cytochrome c release, with maximal effects at 12 to 24 hours. p75^NTR upregulation indicated maladaptive neurotrophin signaling.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 3.5 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 3.5 GHzPower lines50/60 HzCell phones~1 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Bektas H, Seker A, Ustun R, Dogu S (2026). Neurotoxic effects of 3.5 GHz GSM-like RF exposure on cultured DRG neurons: a mechanistic insight into oxidative and apoptotic pathways.
Show BibTeX
@article{bektas_h_seker_a_ustun_r_dogu_s_ce4727,
  author = {Bektas H and Seker A and Ustun R and Dogu S},
  title = {Neurotoxic effects of 3.5 GHz GSM-like RF exposure on cultured DRG neurons: a mechanistic insight into oxidative and apoptotic pathways},
  year = {2026},
  doi = {10.1080/09553002.2026.2617592},
  
}

Quick Questions About This Study

Primary mouse dorsal root ganglion (DRG) neurons were cultured and exposed.
Cells were exposed to pulsed 3.5 GHz RF-EMF at 217 Hz with 12.5% duty cycle for 1 to 24 hours in a GTEM-based setup.
Exposure caused a significant time-dependent reduction in viability and robust elevations in reactive oxygen species, with maximal effects at 12 to 24 hours.
The exposure increased Bax and caspase-3, decreased Bcl-2, and caused cytochrome c release.
The authors warrant in vivo studies assessing long-term and interventional outcomes.