Study type: Medical/biological study (experimental study)

Glutathione concentration and peptidase activity in the lens after exposure to microwaves med./bio.

By: Bernat R
Published in: Acta Physiol Pol 1985; 36 (5-6): 360-365
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Aim of study (acc. to author)

To investigate the effects of microwave exposure on glutathione concentration and activity of carboxypeptidase A and aminopeptidase in rabbit eye lens.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 2.45 GHz
Modulation type: CW
Exposure duration: 5 min/day for 10, 20 and 30 days.

Exposure 1

Main characteristics
Frequency 2.45 GHz
Type
Waveform
Exposure duration 5 min/day for 10, 20 and 30 days.
Modulation
Modulation type CW
Exposure setup
Exposure source
  • Rectangular radiator, magnetron in the apparatus for MW diathermy
Distance between exposed object and exposure source 0.1 m
Setup antenna placed perpendicular to the eyeball.
Parameters
Measurand Value Type Method Mass Remarks
power density 50 W/m² unspecified - unspecified 10 mW/cm²

Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

The microwave exposure caused a temperature increase of the eyeballs. A repeated exposure for 30 days leads to a diminished glutathione concentration in the lens. An exposure with an energy density of 10x10-3W/cm² caused an increased activity of the peptidases. An exposure of 20 days or longer effects lens turbidities. The results indicate that the absorbed microwave energy can cumulate. The effects caused by microwave exposure are ascribed to be thermal.

Study character:

Study funded by