Study type: Medical/biological study (experimental study)

Effect of millimeter waves on UV-induced recombination and mutagenesis in yeast med./bio.

By: Pakhomova ON, Pakhomov AG, Akyel Y
Published in: Bioelectrochem Bioenerg 1997; 43 (2): 227-232
Download citation in RIS format

Aim of study (acc. to author)

To investigate the effects of millimeter wave exposure (MMW; 61.02-61.42 GHz) followed by UV-irradiation on cell survival, recombination processes and mutagenesis in yeast.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 61.02–61.42 GHz
Exposure duration: 30 min

Exposure 1

Main characteristics
Frequency 61.02–61.42 GHz
Type
Exposure duration 30 min
Additional info Exposures at 5 different frequencies between 61.02 and 61.42 GHz (61.02; 61.12; 61.22; 61.32; 61.42) it is not clearly stated how many experiments/samples were treated with which frequency:
Exposure setup
Exposure source
Distance between exposed object and exposure source 0.06 m
Setup samples at the bottom of a plastic petri dish which was placed in a holder in front of MMW irradiatior.
Parameters
Measurand Value Type Method Mass Remarks
power density 1.3 W/m² unspecified measured - -
Additional parameter details

MMW exposure was followed by 60 min 100 J/m² dose of 254 nm ultravoilet radiation.

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

The results suggested that the MMW irradiation did not alter the UV-induced mutagenesis, but could facilitate recombinagenic processes. The recombinagenic effects of MMV found in this study were much weaker than could produced by traditional chemical and radiation mutagens.

Study character:

Study funded by