2100-MHz electromagnetic fields have different effects on visual evoked potentials and oxidant/antioxidant status depending on exposure duration.
Hidisoglu E, Kantar Gok D, Er H, Akpinar D, Uysal F, Akkoyunlu G, Ozen S, Agar A, Yargicoglu P. · 2016
View Original AbstractIn rats, short-term 2100-MHz EMF exposure shortened visual response latencies, while long-term exposure prolonged them and worsened oxidant/antioxidant status.
Plain English Summary
Researchers exposed rats to 2100-MHz electromagnetic fields for 2 hours per day for either 1 or 10 weeks, then recorded visual evoked potentials and measured markers of oxidative stress in the brain. After 1 week of exposure, visual response latencies were shortened and several antioxidant markers were increased. After 1 or 10 weeks, the effects on visual response latencies differed: latencies were shortened in the 1-week group but prolonged in the 10-week group. The researchers concluded that the effects of EMF on visual evoked potentials depend on exposure duration.
Why This Matters
Brain thiobarbituric acid reactive substances (TBARS) and 4-HNE levels were significantly decreased in the 1-week exposed group but increased in the 10-week exposed group compared with their respective control groups. A positive correlation was found between all visual evoked potential latencies and brain TBARS and 4-HNE values. In the 1-week exposed group, superoxide dismutase activity was reduced compared with the sham group, even as other antioxidant markers rose. The study's authors suggested that short-term EMF exposure may have offered protective effects, while long-term exposure may have had adverse effects on both visual responses and the oxidant/antioxidant balance.
Exposure Details
- SAR
- 0.57 and 0.95 W/kg
- Electric Field
- 27.15 and 35.2 V/m
- Source/Device
- 2100-MHz EMF
- Exposure Duration
- 2 h/day for 1 or 10 weeks
Exposure Context
This study used 27.15 and 35.2 V/m for electric fields:
- 90.5x above the Building Biology guideline of 0.3 V/m
This study used 0.57 and 0.95 W/kg for SAR (device absorption):
- 1.4x above the Building Biology guideline of 0.4 W/kg
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 Details
The purpose of the present study was to investigate the duration effects of 2100-MHz electromagnetic field (EMF) on visual evoked potentials (VEPs) and to assess lipid peroxidation (LPO), nitric oxide (NO) production and antioxidant status of EMF exposed rats.
Rats were randomized to following groups: Sham rats (S1 and S10) and rats exposed to 2100-MHz EMF (E...
Brain thiobarbituric acid reactive substances (TBARS) and 4-hydroxy-2-nonenal (4-HNE) levels were si...
Consequently, it could be concluded that different effects of EMFs on VEPs depend on exposure duration. In addition, our results indicated that short-term EMF could provide protective effects, while long-term EMF could have an adverse effect on VEPs and oxidant/antioxidant status.
Show BibTeX
@article{e_2016_2100mhz_electromagnetic_fields_have_107,
author = {Hidisoglu E and Kantar Gok D and Er H and Akpinar D and Uysal F and Akkoyunlu G and Ozen S and Agar A and Yargicoglu P. },
title = {2100-MHz electromagnetic fields have different effects on visual evoked potentials and oxidant/antioxidant status depending on exposure duration.},
year = {2016},
url = {https://www.sciencedirect.com/science/article/abs/pii/S0006899316000317},
}