Study type: Medical/biological study (experimental study)

No evidence of major transcriptional changes in the brain of mice exposed to 1800 MHz GSM signal. med./bio.

Published in: Bioelectromagnetics 2008; 29 (4): 312-323

Aim of study (acc. to author)

To study the possible effects of microwaves on gene expression in brain of mice.

Background/further details

15 mice were exposed and 15 mice were sham exposed.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 1,805.2 MHz
Modulation type: pulsed
Exposure duration: continuous for 1 h

Exposure 1

Main characteristics
Frequency 1,805.2 MHz
Type
Charakteristic
  • guided field
Exposure duration continuous for 1 h
Modulation
Modulation type pulsed
Additional info

GSM signal

Exposure setup
Exposure source
Setup Mice in MW-transparent rodent restrainers were placed in the horizontal plane below the septum on a support of dielectric material with their longitudinal axis parallel to the main axis of the GTEM cell, in a location where matching conditions were optimized.
Sham exposure A sham exposure was conducted.
Parameters
Measurand Value Type Method Mass Remarks
power 4.6 W - measured - input power
electric field strength 96.1 V/m mean measured - ± 5.6 V/m unperturbed
power density 24.5 W/m² mean estimated - plane wave equivalent
SAR 6.05 W/kg maximum calculated - in the intestine
SAR 1.09 W/kg average over mass calculated whole body -
SAR 0.56 W/kg maximum calculated - in the brain
SAR 0.2 W/kg average over mass calculated brain ± 0.07 W/kg

Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

No consistent indication of gene expression modulation in whole mouse brain was found associated to GSM 1800 MHz exposure.

Study character:

Study funded by

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