Study type: Medical/biological study (experimental study)

Effect of 900 MHz Radio Frequency Radiation on Beta Amyloid Protein, Protein Carbonyl, and Malondialdehyde in the Brain. med./bio.

Published in: Electromagn Biol Med 2012; 31 (1): 67-74

Aim of study (acc. to author)

To study the long-term effects of 900 MHz radiofrequency irradiation on beta-amyloid protein, protein carbonyl, and malondialdehyde levels in the rat brain.

Background/further details

17 rats were divided into an exposure group (n=10) and a sham exposure group (n=7).

Endpoint

Exposure

Exposure Parameters
Exposure 1: 900 MHz
Exposure duration: continuous 2 h/day, 7 days/week for 10 months

Exposure 1

Main characteristics
Frequency 900 MHz
Exposure duration continuous 2 h/day, 7 days/week for 10 months
Exposure setup
Exposure source
Distance between exposed object and exposure source 1 cm
Setup rats confined in a plexiglas carousel with heads in direction to the antenna; antenna of the generator in the center of the carousel
Sham exposure A sham exposure was conducted.
Parameters
Measurand Value Type Method Mass Remarks
power 2 W - - - output power
power density 0.05 mW/cm² minimum measured - around the brains
power density 0.33 mW/cm² maximum measured - around the brains
SAR 0.17 W/kg minimum calculated - -
SAR 0.58 W/kg maximum calculated - -

Reference articles

  • Peyman A et al. (2001): Changes in the dielectric properties of rat tissue as a function of age at microwave frequencies.

Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

Beta-amyloid protein, protein carbonyl, and malondialdehyde levels were higher in the brain of rats exposed to 900 MHz radiofrequency irradiation than in the control group. However, only the increase of protein carbonyl in the brain of exposed rats was statistically significant.
In conclusion, the data showed that 10 months of exposure (2 h per day) to 900 MHz irradiation increased protein carbonyl level in healthy rat brain tissue.

Study character:

Study funded by

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