Study type: Medical/biological study (experimental study)

Genotoxicity evaluation of electromagnetic fields generated by 835-MHz mobile phone frequency band. med./bio.

Published in: Eur J Cancer Prev 2005; 14 (2): 175-179

Aim of study (acc. to editor)

To examine the mutagenic and co-mutagenic effects of an electromagnetic field at 835 MHz (the most widely used communication frequency band in Korean CDMA mobile phone networks) on bacteria.

Background/further details

To determine bacterial mutagenicity, histidine auxotrophic strains of Salmonella typhimurium and a tryptophan auxotrophic strain of Escherichia coli were used. To study co-mutagenicity exposure was conducted with the mutagens 4-nitroquinoline-1-oxide, sodium azide and cumene hydroxide.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 835 MHz
Modulation type: CW
Exposure duration: continuous for 48 h
  • SAR: 4 W/kg unspecified (unspecified)

Exposure 1

Main characteristics
Frequency 835 MHz
Type
Charakteristic
  • guided field
Exposure duration continuous for 48 h
Modulation
Modulation type CW
Exposure setup
Exposure source
Setup Cultivated cells on three Petri dishes (10 cm in diameter and 2 cm high) stacked in a jig fixture were exposed to uniform TEM-mode EMF in the TEM cell under controlled conditions (5% CO2 and 95% air and a temperature of 37°C).
Additional info Control agar plates were incubated without EMF in a standard bacterial incubator.
Parameters
Measurand Value Type Method Mass Remarks
SAR 4 W/kg unspecified unspecified unspecified -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

The results showed that an 835-MHz electromagnetic field was neither mutagenic nor co-mutagenic in the tested bacteria. In addition, the exposure to 835-MHz did not change DNA degradation in vitro.

Study character:

Study funded by

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