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Brain & Nervous System

Lack of effects of 1439 MHz electromagnetic near field exposure on the blood-brain barrier in immature and young rats.

No Effects Found

Kuribayashi M, Wang J, Fujiwara O, Doi Y, Nabae K, Tamano S, Ogiso T, Asamoto M, Shirai T. · 2005

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Local head exposure to 1439 MHz EMF at SARs up to 6 W/kg for 90 minutes daily over one or two weeks showed no adverse effects on the blood-brain barrier in immature and young rats.

Plain English Summary

Summary written for general audiences

Researchers investigated possible effects of 1439 MHz electromagnetic near field exposure on the blood-brain barrier in immature (4 weeks old) and young (10 weeks old) rats. Expression of the three genes was not pathologically changed by EMF at any exposure level or age, and vascular permeability measured with FITC-dextran FD20 was not affected. The findings suggest that local head exposure to 1439 MHz EMF exerts no adverse effects on the BBB in immature and young rats.

Exposure Details

SAR
0, 2, and 6 W/kg
Source/Device
1439 MHz
Exposure Duration
90 min/day for 1 or 2 weeks

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kg
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1.44 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1.44 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

The aim of this study is to investigate Lack of effects of 1439 MHz electromagnetic near field exposure on the blood-brain barrier in immature and young rats.

Possible effects of 1439 MHz electromagnetic near field (EMF) exposure on the blood-brain barrier (B...

Although expression of the 3 genes was clearly decreased after administration of 1,3-dinitrobenzene ...

These findings suggest that local exposure of the head to 1439 MHz EMF exerts no adverse effects on the BBB in immature and young rats.

Cite This Study
Kuribayashi M, Wang J, Fujiwara O, Doi Y, Nabae K, Tamano S, Ogiso T, Asamoto M, Shirai T. (2005). Lack of effects of 1439 MHz electromagnetic near field exposure on the blood-brain barrier in immature and young rats. Bioelectromagnetics. 26(7):578-88, 2005.
Show BibTeX
@article{m_2005_lack_of_effects_of_3162,
  author = {Kuribayashi M and Wang J and Fujiwara O and Doi Y and Nabae K and Tamano S and Ogiso T and Asamoto M and Shirai T.},
  title = {Lack of effects of 1439 MHz electromagnetic near field exposure on the blood-brain barrier in immature and young rats.},
  year = {2005},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/16142770/},
}
PubMed: 16142770

Cited By (73 papers)

View all 73 citing papers on Semantic Scholar

Quick Questions About This Study

The aim was to investigate the lack of effects of 1439 MHz electromagnetic near field exposure on the blood-brain barrier in immature and young rats.
Rats were locally exposed on the head to 1439 MHz EMF at SARs of 0, 2, and 6 W/kg for 90 minutes per day for 1 or 2 weeks.
The study assessed p-glycoprotein, aquaporin-4, and claudin-5 and found no pathologically relevant differences with EMF at any exposure level or age.
Vascular permeability monitored with FITC-dextran FD20 was not affected by EMF exposure.
The findings suggest that local head exposure to 1439 MHz EMF exerts no adverse effects on the BBB in immature and young rats.