EMF-Portal | Effect of amplitude-modulated 147 MHz radiofrequency radiation on calcium ion efflux from avian brain tissue

Effect of amplitude-modulated 147 MHz radiofrequency radiation on calcium ion efflux from avian brain tissue med./bio.

By: Albert EN, Slaby F, Roche J, Loftus J

Published in: Radiat Res 1987; 109 (1): 19-27

Aim of study (acc. to author)

Endpoint

Exposure

Exposure	Parameters
Exposure 1: 147 MHz Modulation type: AM Exposure duration: continuous	power density: 7.5 W/m² unspecified

Exposure 1

Main characteristics

Frequency	147 MHz
Type	electromagnetic field
Waveform	sinusoidal
Charakteristic	near field
Polarization	linear
Exposure duration	continuous

Modulation

Modulation type	AM
Modulation frequency	16 Hz

Exposure setup

Exposure source	TEM cell

Parameters

Measurand	Value	Type	Method	Mass	Remarks
power density	7.5 W/m²	unspecified	calculated	-	-

Exposed system:

tissue slices
isolated organ

Methods Endpoint/measurement parameters/methodology

cell function: determination of calcium efflux (use of radiolabeled calcium, scintillation counting)

morphol./histopathol. changes: examination of tissue slices (light microscopy, toluidine blue stain)

determination of protein content (method of Lowry)

Investigated system:

tissue slices
isolated organ

Time of investigation:

after exposure

Main outcome of study (acc. to author)

The findings of this study demonstrate that the calcium efflux from avian brain tissue is not effected in vitro by the exposure conditions used.

Study character:

medical/biological study
experimental study
full/main study

Study funded by

not stated/no funding

Platano D et al. (2007): Acute exposure to low-level CW and GSM-modulated 900 MHz radiofrequency does not affect Ba(2+) currents through voltage-gated calcium channels in rat cortical neurons

Dutta SK et al. (1984): Microwave radiation-induced calcium ion efflux from human neuroblastoma cells in culture