6,486 Studies Reviewed. 85.2% of Original Studies Found Biological Effects. The Evidence is Clear.
Shield Your Body

Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.

Brain & Nervous System

No Dynamic Changes in Blood-brain Barrier Permeability Occur in Developing Rats During Local Cortex Exposure to Microwaves

No Effects Found

Authors not listed · 2015

Share:

Local cortex exposure to 1457 MHz RF at 2.0 W/kg for 50 minutes did not alter blood-brain barrier permeability in juvenile or young adult rats.

Plain English Summary

Summary written for general audiences

Researchers exposed the cortex of juvenile and young adult rats to 1457 MHz RF at 2.0 W/kg for 50 minutes. They measured blood-brain barrier permeability in the pia mater using intravital fluorescence microscopy. No significant difference in dye extravasation was found between exposed and sham-exposed groups, and no albumin leakage was detected after exposure.

Why This Matters

The study addressed a gap in knowledge about RF effects on cerebral microcirculation during development. The authors concluded that no dynamic changes in BBB permeability occurred at either developmental stage during non-thermal RF exposure.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1457 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1457 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (2015). No Dynamic Changes in Blood-brain Barrier Permeability Occur in Developing Rats During Local Cortex Exposure to Microwaves.
Show BibTeX
@article{no_dynamic_changes_in_blood_brain_barrier_permeability_occur_in_developing_rats_during_local_cortex_exposure_to_microwaves_ce607,
  author = {Unknown},
  title = {No Dynamic Changes in Blood-brain Barrier Permeability Occur in Developing Rats During Local Cortex Exposure to Microwaves},
  year = {2015},
  
  
}
PubMed: 25977380

Quick Questions About This Study

The cortex was locally exposed to 1457 MHz RF at an average specific absorption rate of 2.0 W/kg in the target area for 50 minutes.
Permeability changes in the BBB of the pia mater were measured directly using intravital fluorescence microscopy.
There was no significant difference in extravasation of intravenously-injected dye between exposed and sham-exposed groups of either juvenile or young adult rats.
No histological evidence of albumin leakage was found in any of the brains just after exposure, indicating no traces of BBB disruption remained.
The findings suggest that no dynamic changes occurred in BBB permeability of the rats at either developmental stage, even during local RF exposure at non-thermal levels.