Study type: Medical/biological study (experimental study)

The impact of electromagnetic radiation of different parameters on platelet oxygen metabolism - in vitro studies med./bio.

By: Lewicka M, Henrykowska GA, Pacholski K, Szczesny A, Dziedziczak-Buczynska M, Buczynski A
Published in: Adv Clin Exp Med 2015; 24 (1): 31-35
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Aim of study (acc. to author)

The effects of exposure of human blood platelets to either a 50 Hz or 1 kHz magnetic field or a 1 kHz electric field on oxidative stress should be investigated.

Background/further details

Cells were divided into 3 groups: 1) exposure to a 1 kHz magnetic field (representing car electronics), 2) exposure to a 50 Hz magnetic field (representing physiotherapy equipment), 3) exposure to a 1 kHz electric field (representing LCD monitors). For each exposure group, a separate control group was tested.
36 exposure and control samples were used in each of the two tests on catalase enzyme activity and membrane lipid peroxidation (remark EMF-Portal: the size of individual groups is not clear).

Endpoint

Exposure

Exposure Parameters
Exposure 1: 1 kHz
Exposure duration: continuous for 30 minutes
Exposure 2: 50 Hz
Exposure duration: continuous for 30 minutes
Exposure 3: 1 kHz
Exposure duration: continuous for 30 minutes

Exposure 1

Main characteristics
Frequency 1 kHz
Type
Exposure duration continuous for 30 minutes
Additional info magnetic field
Exposure setup
Exposure source
Chamber polyethylene tubes
Setup coils were positioned over and under a plastic support in which 8 polyethylene tubes containing the tested suspensions were inserted into holes; field had a uniform course
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 0.5 mT - - - -

Exposure 2

Main characteristics
Frequency 50 Hz
Type
Exposure duration continuous for 30 minutes
Additional info magnetic field
Exposure setup
Exposure source
Chamber polyethylene tubes
Setup coils were positioned over and under a plastic support in which 8 polyethylene tubes containing the tested suspensions were inserted into holes; field had a uniform course
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 10 mT - - - -

Exposure 3

Main characteristics
Frequency 1 kHz
Type
Exposure duration continuous for 30 minutes
Additional info electric field
Exposure setup
Exposure source
  • flat capacitor made of 2 circular copper plates
Chamber polyethylene tubes
Setup copper plates were positioned over and under a plastic support, respectively, in which 8 polyethylene tubes containing the tested suspensions were inserted into holes
Parameters
Measurand Value Type Method Mass Remarks
electric field strength 220 V/m - - - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

(Remark EMF-Portal: All statements on the significance of results in the article were not cleary specified as a statistical significance. p values for the results were not stated, either).
A significant increase of the catalase enzyme activity was found in all groups compared to their corresponding control groups, with the highest significance in group 1 (1 kHz magnetic field, representing car electronics).
The lipid peroxidation was increased in all groups in comparison to their corresponding control groups as well. Here, the most profound increase was also found in group 1 and it was significant.
The authors conclude that exposure of human blood platelets to either a 50 Hz or 1 kHz magnetic field or a 1 kHz electric field could induce oxidative stress, with the 1 kHz magnetic field possibly having the most profound effect.

Study character:

Study funded by

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