EMF-Portal | Clastogenic effects of radiofrequency radiations on chromosomes of Tradescantia

Clastogenic effects of radiofrequency radiations on chromosomes of Tradescantia med./bio.

By: Haider T, Knasmueller S, Kundi M, Haider M

Published in: Mutation Research - Letters 1994; 328 (1-2): 65-68

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Aim of study (acc. to author)

Background/further details

Endpoint

Exposure

Exposure	Parameters
Exposure 1: 10–20 MHz Modulation type: AM Exposure duration: 30 hrs	electric field strength: 40 V/m unspecified (in wooden chamber 30 m from slewable curtain antenna) electric field strength: 70 V/m unspecified (in wooden chamber 30 m from the vertical cage antenna at 14 MHz) electric field strength: 40 V/m unspecified (in mesh cage 30 m from the slewable curtain antenna at 10 MHz) electric field strength: 90 V/m unspecified (in wooden chamber 15 m from the vertical cage antenna at 14 MHz) magnetic field strength: 110 mA/m unspecified (in mesh cage 10 m from the slewable curtain antenna at 18-21 MHz) electric field strength: 1 V/m unspecified (to 3 V/m; in wooden chamber 200 m from the broadcasting area) electric field strength: 65 V/m unspecified (to 170 V/m; in a mesh cage at 10 m from the slewable curtain antenna at 18-21 MHz)

Parameters

Exposure 1: 10–20 MHz

Modulation type: AM

Exposure duration: 30 hrs

electric field strength: 40 V/m unspecified (in wooden chamber 30 m from slewable curtain antenna)
electric field strength: 70 V/m unspecified (in wooden chamber 30 m from the vertical cage antenna at 14 MHz)
electric field strength: 40 V/m unspecified (in mesh cage 30 m from the slewable curtain antenna at 10 MHz)
electric field strength: 90 V/m unspecified (in wooden chamber 15 m from the vertical cage antenna at 14 MHz)
magnetic field strength: 110 mA/m unspecified (in mesh cage 10 m from the slewable curtain antenna at 18-21 MHz)
electric field strength: 1 V/m unspecified (to 3 V/m; in wooden chamber 200 m from the broadcasting area)
electric field strength: 65 V/m unspecified (to 170 V/m; in a mesh cage at 10 m from the slewable curtain antenna at 18-21 MHz)

Exposure 1

Main characteristics

Frequency	10–20 MHz
Type	electromagnetic field
Exposure duration	30 hrs

Modulation

Modulation type	AM

Exposure setup

Exposure source	in the vicinity of broadcasting area with two antenna, sewable curtain and vertical cage antenna.
Chamber	Wooden chambers, Faraday cages and cages made from plastic mesh material.
Additional info	distance of 10, 15, 30, 200 m of the exposed object from antenna.

Parameters

Measurand	Value	Type	Method	Mass	Remarks
electric field strength	40 V/m	unspecified	measured	-	in wooden chamber 30 m from slewable curtain antenna
electric field strength	70 V/m	unspecified	measured	-	in wooden chamber 30 m from the vertical cage antenna at 14 MHz
electric field strength	40 V/m	unspecified	measured	-	in mesh cage 30 m from the slewable curtain antenna at 10 MHz
electric field strength	90 V/m	unspecified	measured	-	in wooden chamber 15 m from the vertical cage antenna at 14 MHz
magnetic field strength	110 mA/m	unspecified	measured	-	in mesh cage 10 m from the slewable curtain antenna at 18-21 MHz
electric field strength	1 V/m	unspecified	measured	-	to 3 V/m; in wooden chamber 200 m from the broadcasting area
electric field strength	65 V/m	unspecified	measured	-	to 170 V/m; in a mesh cage at 10 m from the slewable curtain antenna at 18-21 MHz

Additional parameter details

MF strength less than 0.01 A/m at exposure sites unless stated.

Exposed system:

plant
Tradescantia (plant cuttings of clone #4430)
whole body

Methods Endpoint/measurement parameters/methodology

Investigated system:

DNA/RNA
intact cell/cell culture
pollen mother cells; chromosomes

Time of investigation:

after exposure

Main outcome of study (acc. to author)

At all exposure sites in the immediate vicinity of the antennae a statistically significant increase of micronucleus formation was found. Since the parallel exposure in a non-shielding and a shielding cage also revealed significant differences in micronucleus frequencies, the clastogenic effects are attributable to the short-wave radiation from the antennae.

Study character:

medical/biological study
experimental study
full/main study

Study funded by

not stated/no funding

Gustavino B et al. (2016): Exposure to 915 MHz radiation induces micronuclei in Vicia faba root tips

Tkalec M et al. (2009): Effects of radiofrequency electromagnetic fields on seed germination and root meristematic cells of Allium cepa L

Juutilainen J et al. (2007): Micronucleus frequency in erythrocytes of mice after long-term exposure to radiofrequency radiation

Baohong W et al. (2007): Evaluating the combinative effects on human lymphocyte DNA damage induced by ultraviolet ray C plus 1.8 GHz microwaves using comet assay in vitro

Maes A et al. (2006): Cytogenetic investigation of subjects professionally exposed to radiofrequency radiation

Clastogenic effects of radiofrequency radiations on chromosomes of Tradescantia med./bio.

Aim of study (acc. to author)

Background/further details

Endpoint

Exposure

Exposure 1

Main characteristics

Modulation

Exposure setup

Parameters

Additional parameter details

Methods Endpoint/measurement parameters/methodology

Main outcome of study (acc. to author)

Study funded by

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