Reactive oxygen species levels and DNA fragmentation on astrocytes in primary culture after acute exposure to low intensity microwave electromagnetic field.
Campisi A, Gulino M, Acquaviva R, Bellia P, Raciti G, Grasso R, Musumeci F, Vanella A, Triglia A · 2010
View Original AbstractCell phone radiation damaged brain cell DNA in 20 minutes at everyday exposure levels, with pulsed signals proving more harmful than continuous waves.
Plain English Summary
Italian scientists exposed brain cells to cell phone radiation and found that pulsed signals caused DNA damage and increased harmful molecules called free radicals after 20 minutes. Continuous waves showed no effects, suggesting modulated wireless signals may harm brain cells through non-heating mechanisms.
Why This Matters
This study provides important evidence that wireless radiation can damage brain cells at non-thermal levels, specifically targeting astrocytes which support and protect neurons. The 10 V/m exposure level used here is within the range you might encounter near cell towers or when using wireless devices, making these findings directly relevant to everyday exposures. What makes this research particularly significant is the demonstration that modulated signals (like those used in cell phone communications) are more harmful than continuous waves, and that DNA damage can occur in just 20 minutes of exposure. The researchers' finding that glutamate receptors may be involved points to a plausible biological mechanism for how wireless radiation could contribute to brain dysfunction over time.
Exposure Details
- Electric Field
- 10 V/m
- Source/Device
- 900 MHz continuous waves or 900 MHz waves modulated in amplitude at 50 Hz using a sinusoidal waveform
- Exposure Duration
- 5, 10, or 20 min
Exposure Context
This study used 10 V/m for electric fields:
- 33.3x above the Building Biology guideline of 0.3 V/m
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.
Study Details
The exposure of primary rat neocortical astroglial cell cultures to acute electromagnetic fields (EMF) in the microwave range was studied.
Differentiated astroglial cell cultures at 14 days in vitro were exposed for 5, 10, or 20 min to eit...
No change in cellular viability evaluated by MTT test and lactate dehydrogenase release was observed...
Our data demonstrate, for the first time, that even acute exposure to low intensity EMF induces ROS production and DNA fragmentation in astrocytes in primary cultures, which also represent the principal target of modulated EMF. Our findings also suggest the hypothesis that the effects could be due to hyperstimulation of the glutamate receptors, which play a crucial role in acute and chronic brain damage. Furthermore, the results show the importance of the amplitude modulation in the interaction between EMF and neocortical astrocytes.
Show BibTeX
@article{a_2010_reactive_oxygen_species_levels_6,
author = {Campisi A and Gulino M and Acquaviva R and Bellia P and Raciti G and Grasso R and Musumeci F and Vanella A and Triglia A},
title = {Reactive oxygen species levels and DNA fragmentation on astrocytes in primary culture after acute exposure to low intensity microwave electromagnetic field.},
year = {2010},
url = {http://www.sciencedirect.com/science/article/pii/S030439401000176X},
}