Study type: Medical/biological study (experimental study)

14.6 mT ELF magnetic field exposure yields no DNA breaks in model system Salmonella, but provides evidence of heat stress protection. med./bio.

Published in: Bioelectromagnetics 2006; 27 (6): 445-450

Aim of study (acc. to editor)

To study the effects of magnetic fields on DNA strand breaks in the bacterial Salmonella enterica test system.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 60 Hz
Exposure duration: intermittent, 5 min on/10 min off for 4 h

Exposure 1

Main characteristics
Frequency 60 Hz
Type
Waveform
Exposure duration intermittent, 5 min on/10 min off for 4 h
Exposure setup
Exposure source
Setup exposure system consisted of three units with 1 m long air core solenoids and one control unit; all four units were submerged in 37°C circulating deionized water; vertically aligned units were evenly spaced at 1 m so that the field interference was almost zero; ratio of solenoid length to the diameter of the core was so large that all three produced extremely uniform MF at region where the cultures were placed
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 14.6 mT peak value calibration - -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

The data showed no significant increase in recombination events and strand breaks due to magnetic field.
Evidence of heat stress protection was determined by comparison of the survival rates of magnetic field exposed and control cells after the administration of a 10 min 53°C heat stress. The control cells exhibited nine times more cell mortality than the magnetic field exposed cells.

Study character:

Study funded by

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