Study type: Medical/biological study (experimental study)

Effect of long-term mobile communication microwave exposure on vascular permeability in mouse brain. med./bio.

Published in: Pathology 2002; 34 (4): 344-347

Aim of study (acc. to author)

To study the effect of long-term exposure to global system for mobile communication (GSM) radiofrequency fields on vascular permeability in murine brains.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 900 MHz
Modulation type: pulsed
Exposure duration: repeated daily exposure for 60 min/day, 5 days/week for 2 years
  • SAR: 0.25 W/kg average over mass (whole body)
  • SAR: 1 W/kg average over mass (whole body)
  • SAR: 2 W/kg average over mass (whole body)
  • SAR: 4 W/kg average over mass (whole body)

Exposure 1

Main characteristics
Frequency 900 MHz
Type
Charakteristic
Exposure duration repeated daily exposure for 60 min/day, 5 days/week for 2 years
Modulation
Modulation type pulsed
Pulse width 0.6 ms
Repetition frequency 217 Hz
Exposure setup
Exposure source
Setup The exposure system consisted of a cylindrical parallel plate with mice restrained in clear Perspex tubes arranged radially around a dipole antenna. A forced air supply was maintained through the cylinders to ensure no heat build-up, and there was no rise in core body temperature.
Additional info A sham-exposed group and a non exposed, freely moving, cage control group without handling or further confinement were also included. In a positive control group, mice were given Clostridium perfringens type D epsilon toxin.
Parameters
Measurand Value Type Method Mass Remarks
SAR 0.25 W/kg average over mass unspecified whole body -
SAR 1 W/kg average over mass unspecified whole body -
SAR 2 W/kg average over mass unspecified whole body -
SAR 4 W/kg average over mass unspecified whole body -

Reference articles

  • Finnie JW et al. (2001): Effect of global system for mobile communication (gsm)-like radiofrequency fields on vascular permeability in mouse brain.

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Investigated organ system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

Prolonged exposure to radiofrequency fields used in mobile communication produced negligible disruption of blood-brain barrier integrity and minimal albumin leakage in control and exposed mice.

Study character:

Study funded by

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