Study type: Medical/biological study (experimental study)

Cell physiological effects of radiofrequency electromagnetic fields. med./bio.

Published in: Physiol Chem Phys 1982; 14 (1): 31-39

Aim of study (acc. to author)

To evaluate the effects of radiofrequency electromagnetic (RF) fields on oocytes and matured eggs of the frog Rana temporaria. Water-related cell physiological parameters were investigated.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 10–27 MHz
Exposure duration: up to 2 h
  • SAR: 800 W/kg maximum
Exposure 2: 10–27 MHz
Exposure duration: up to 4 h
  • SAR: 800 W/kg maximum

Exposure 1

Main characteristics
Frequency 10–27 MHz
Type
Exposure duration up to 2 h
Exposure setup
Exposure source
  • two 15 cm x 15 cm condenser plates 2 cm apart
Setup Eggs were placed in small test tubes (0.5 cm in diameter) between the plates with the long axis parallel to the E-field
Parameters
Measurand Value Type Method Mass Remarks
SAR 800 W/kg maximum calculated - -

Exposure 2

Main characteristics
Frequency 10–27 MHz
Type
Exposure duration up to 4 h
Exposure setup
Exposure source
  • Platinum electrodes connected to a turnable coil with resistor and a capacitor in parallel.
Chamber 9.4 cm x 1.1 cm x 0.9 cm Plexiglas holder with smal Teflon cylinders covered with agar solution for placement of the eggs
Setup chamber with two U-shaped glass tubes (6 cm llong, 0.8 cm diameter) connected to two cups (with 100% Ringer solution) in which the electrodes were inserted
Parameters
Measurand Value Type Method Mass Remarks
SAR 800 W/kg maximum calculated - -

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

The observed difference in cell density measured before and after exposure was not statistically significant. The isotopic water permeability of matured eggs was not statistically significant altered. The osmotic water permeability of oocytes was significantly decreased after exposure with SAR values of about 50 W/kg.

Study character:

Study funded by

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