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Effects of nano-selenium on cognition performance of mice exposed in 1800 MHz radiofrequency fields

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Qin F, Yuan H, Nie J, Cao Y, Tong J · 2014

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In male mice exposed to 1800 MHz radiofrequency fields for 120 minutes per day, learning and memory were significantly impaired, and nano-selenium supplementation improved those impairments.

Plain English Summary

Summary written for general audiences

Researchers exposed male mice to 1800 MHz radiofrequency fields at 208 microW/cm2 for 0, 30, or 120 minutes per day for 30 days, while some groups also received nano-selenium by intra-gastric injection. Significant impairments in learning and memory were observed in the RF 120 min group, along with reduced acetylcholine levels and antioxidant enzyme activity and increased GABA, glutamate, and MDA in the brain. Nano-selenium supplementation decreased GABA, glutamate, and MDA levels and increased acetylcholine levels and antioxidant enzyme activities in the exposed mice.

Why This Matters

Cognitive ability was tested using a Y-maze, and brain chemistry was measured by analyzing levels of MDA, GABA, glutamate, acetylcholine, and the activities of the enzymes CAT and GSH-Px. The researchers suggested that nano-selenium's effect might involve increasing antioxidation, decreasing free radical content, and changes in brain neurotransmitters.

Exposure Details

Power Density
0.208 mW/cm²
Source/Device
1800 MHz
Exposure Duration
0, 30 and 120 min/d for 30 days

Exposure Context

This study used 0.208 mW/cm² for radio frequency:

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: 0.208 mW/cm²Extreme Concern - 1,000 µW/m²FCC Limit - 10M µW/m²Effects observed in the Extreme Concern range (Building Biology)FCC limit is 5 times higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1.80 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1.80 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

To study the effects of nano-selenium (NSe) on cognition performance of mice exposed to 1800 MHz radiofrequency fields (RF).

Male mice were randomly divided into four groups, control and nano-Se low, middle and high dose grou...

Significant impairments in learning and memory (P < 0.05) were observed in the RF 120 min group, and...

NSe could improve cognitive impairments of mice exposed to RF, the mechanism of which might involve the increasing antioxidation, decreasing free radical content and the changes of cerebra neurotransmitters.

Cite This Study
Qin F, Yuan H, Nie J, Cao Y, Tong J (2014). Effects of nano-selenium on cognition performance of mice exposed in 1800 MHz radiofrequency fields Wei Sheng Yan Jiu. 43(1):16-21, 2014.
Show BibTeX
@article{f_2014_effects_of_nanoselenium_on_171,
  author = {Qin F and Yuan H and Nie J and Cao Y and Tong J},
  title = {Effects of nano-selenium on cognition performance of mice exposed in 1800 MHz radiofrequency fields},
  year = {2014},
  
  url = {https://europepmc.org/article/med/24564105},
}
PubMed: 24564105

Cited By (9 papers)

Quick Questions About This Study

Significant impairments in learning and memory were observed in the group exposed to radiofrequency fields for 120 minutes per day.
Cognitive ability was tested with a Y-maze.
Nano-selenium decreased GABA, glutamate, and MDA levels and increased acetylcholine levels and the activities of GSH-Px and CAT.
Nano-selenium solution was administered by intra-gastric injection at 0.5 ml per day for 50 days.
The researchers suggested the mechanism might involve increasing antioxidation, decreasing free radical content, and changes in brain neurotransmitters.