Study type: Medical/biological study (experimental study)

Response of Caenorhabditis elegans to wireless devices radiation exposure. med./bio.

Published in: Int J Radiat Biol 2015; 91 (3): 286-293

Aim of study (acc. to author)

The effects of exposure of Caenorhabditis elegans to different radio frequency electromagnetic fields (DECT, WiFi, GSM) on growth, fertility, lifespan, chemotaxis, short-term memory and stress should be investigated.

Background/further details

Worms of different strains were distributed in one of the following groups: 1) DECT exposure, 2) DECT sham exposure, 3) WiFi exposure, 4) WiFi sham exposure, 5) GSM exposure and 6) GSM sham exposure. Several tests with different strains (wild type, age- and stress-sensitive strains (DR1572, DR26, TK22 and RB864), model strains for neurodegenerative diseases (NL5901 for Parkinson's disease and CL4176 for Alzheimer's disease) and GFP-transgenic strains (CL2070, CF1553, SJ4005, LG333, LD1171 and CL2166)) were conducted in the groups. All tests were performed at least twice.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 1,880–1,900 MHz
Modulation type: pulsed
Exposure duration: continuous for 0.5, 1, 3, 6 or 24 h
Exposure 2: 2,400–2,480 MHz
Modulation type: pulsed
Exposure duration: continuous for 0.5, 1, 3, 6 or 24 h
Exposure 3: 1,780–1,800 MHz
Modulation type: pulsed
Exposure duration: continuous for 0.5, 1 or 3 hours
GSM

Exposure 1

Main characteristics
Frequency 1,880–1,900 MHz
Type
Exposure duration continuous for 0.5, 1, 3, 6 or 24 h
Additional info DECT
Modulation
Modulation type pulsed
Repetition frequency 100 Hz
Exposure setup
Exposure source
Setup plates containing worms were placed next to the operating device at a distance of 5-10 cm; temperature was 20°C
Sham exposure A sham exposure was conducted.
Parameters
Measurand Value Type Method Mass Remarks
electric field strength 3.75 V/m mean measured - -
electric field strength 11.3 V/m peak value measured - -

Exposure 2

Main characteristics
Frequency 2,400–2,480 MHz
Type
Exposure duration continuous for 0.5, 1, 3, 6 or 24 h
Additional info WiFi
Modulation
Modulation type pulsed
Repetition frequency 10 Hz
Exposure setup
Exposure source
Setup plates containing worms were placed next to the operating device at a distance of 5-10 cm; temperature was 20°C
Sham exposure A sham exposure was conducted.
Parameters
Measurand Value Type Method Mass Remarks
electric field strength 2.1 V/m mean measured - -
electric field strength 9.7 V/m peak value measured - -

Exposure 3

Main characteristics
Frequency 1,780–1,800 MHz
Type
Exposure duration continuous for 0.5, 1 or 3 hours
Additional info GSM
Modulation
Modulation type pulsed
Repetition frequency 217 Hz
Exposure setup
Exposure source
Setup plates containing worms were placed next to the operating device at a distance of 5-10 cm; temperature was 20°C
Sham exposure A sham exposure was conducted.
Parameters
Measurand Value Type Method Mass Remarks
electric field strength 5.53 V/m average over time measured - -
electric field strength 15.4 V/m peak value measured - -
magnetic flux density 50 nT - measured - magnetic flux density of 217 Hz GSM modulation

Reference articles

Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

No significant differences were found between the exposed groups 1, 3 and 5 and sham exposed groups 2, 4 and 6, respectively, in any test.
The authors conclude that an exposure of Caenorhabditis elegans to radio frequency electromagnetic fields from DECT, WiFi and GSM sources has no effect on the investigated parameters of the study under the given conditions.

Study character:

Study funded by

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