Study type: Medical/biological study (experimental study)

Non-thermal effects of 500MHz - 900MHz microwave radiation on enzyme kinetics. med./bio.

Published in: 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Vancouver, BC, Canada. IEEE, 2008: 1052-1055, ISBN 978-1-4244-1814-5

Aim of study (acc. to author)

To study the effects of low level microwave exposures ranging from 500 MHz to 900 MHz on L-lactate dehydrogenase enzyme activity.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 500 MHz
Exposure duration: continuous for 5 min
Exposure 2: 600 MHz
Exposure duration: continuous for 5 min
Exposure 3: 700 MHz
Exposure duration: continuous for 5 min
Exposure 4: 750 MHz
Exposure duration: continuous for 5 min
Exposure 5: 800 MHz
Exposure duration: continuous for 5 min
Exposure 6: 900 MHz
Exposure duration: continuous for 5 min

Exposure 1

Main characteristics
Frequency 500 MHz
Type
Exposure duration continuous for 5 min
Exposure setup
Exposure source
Parameters
Measurand Value Type Method Mass Remarks
power 8.974288 mW - calibration - -
electric field strength 2.01 mV/m mean calculated - -

Exposure 2

Main characteristics
Frequency 600 MHz
Type
Exposure duration continuous for 5 min
Exposure setup
Exposure source
Parameters
Measurand Value Type Method Mass Remarks
power 8.87156 mW - calibration - -
electric field strength 2.24 mV/m mean calculated - -

Exposure 3

Main characteristics
Frequency 700 MHz
Type
Exposure duration continuous for 5 min
Exposure setup
Exposure source
Parameters
Measurand Value Type Method Mass Remarks
power 8.810489 mW - calibration - -
electric field strength 2.53 mV/m mean calculated - -

Exposure 4

Main characteristics
Frequency 750 MHz
Type
Exposure duration continuous for 5 min
Exposure setup
Exposure source
Parameters
Measurand Value Type Method Mass Remarks
power 8.830799 mW - calibration - -
electric field strength 2.73 mV/m mean calculated - -

Exposure 5

Main characteristics
Frequency 800 MHz
Type
Exposure duration continuous for 5 min
Exposure setup
Exposure source
Parameters
Measurand Value Type Method Mass Remarks
power 8.87156 mW - calibration - -
electric field strength 3.29 mV/m mean calculated - -

Exposure 6

Main characteristics
Frequency 900 MHz
Type
Exposure duration continuous for 5 min
Exposure setup
Exposure source
Parameters
Measurand Value Type Method Mass Remarks
power 8.830799 mW - calibration - -
electric field strength 4.21 mV/m mean calculated - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

The data revealed the increased enzyme activity of the L-lactate dehydrogenase upon microwave exposure at the two particular frequencies 500 MHz and 900 MHz. The opposite effect was found with the microwave frequencies of 650 MHz, 700 MHz and 750 MHz (LDH enzyme activity was decreased).
The results suggest that this specific biological process can be modulated by the defined frequencies of microwave exposure. This could benefit the development of new biomaterials, non-invasive techniques and advanced technologies.

Study character:

Study funded by

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