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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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This study found no blood-brain barrier damage from cell phone-frequency radiation at levels exceeding typical device limits in young rats.

Plain English Summary

Summary written for general audiences

Researchers exposed young and developing rats to cell phone-frequency radiation (1439 MHz) for 90 minutes daily to see if it damaged the blood-brain barrier, which protects the brain from harmful substances. Even at high exposure levels (up to 6 W/kg), they found no changes in barrier function or protective proteins after 1-2 weeks of exposure. This suggests that this type of radiofrequency radiation may not compromise the brain's natural protective barrier in young animals.

Exposure Information

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

The study examined exposure from: 1439 MHz Duration: 90 min/day for 1 or 2 weeks

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)

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Quick Questions About This Study

No, a 2005 study found that 1439 MHz radiation exposure for 90 minutes daily did not damage the blood-brain barrier in young and developing rats. Even at high exposure levels up to 6 W/kg, researchers detected no changes in barrier function or protective proteins after 1-2 weeks of exposure.
Research shows 90 minutes of daily 1439 MHz radiation exposure does not harm the brain's protective barrier in developing animals. The study tested exposure levels up to 6 W/kg for 1-2 weeks and found no pathologically relevant differences in blood-brain barrier function compared to unexposed controls.
High-level 1439 MHz exposure up to 6 W/kg does not affect brain barrier proteins in young rats. Researchers found no changes in protective protein expression after 90 minutes daily exposure for 1-2 weeks, suggesting this frequency may not compromise the brain's natural protective mechanisms.
According to 2005 research, 1439 MHz EMF appears safe for immature rat brain development. Scientists exposed young rats to this frequency for 90 minutes daily at levels up to 6 W/kg and found no adverse effects on the blood-brain barrier or vascular permeability.
Exposure to 6 W/kg of 1439 MHz radiation does not affect brain vascular permeability. Researchers monitored blood vessel barrier function using FITC-dextran markers and found no changes in permeability after 90 minutes daily exposure for up to two weeks in young rats.