|
|
|
 |
Medical/biological Study (experimental study)Biological and morphological effects on the brain after exposure of rats to a 1439 MHz TDMA field. med./biol. By: Tsurita G, Nagawa H, Ueno S, Watanabe S, Taki M
Published in: Bioelectromagnetics 2000; 21 (5): 364 - 371 (  PubMed Entry , Journal web site )Aim of study (according to author)
To investigate the athermal effects of exposure to a 1439 MHz TDMA field, as used in cellular phones, on the permeability of the blood-brain barrier, on the morphological changes of the brain and on body-mass fluctuations.
Endpoint Exposure
General category: mobile communication system, digital mobile phone, PDC, TDMA | Field characteristics | Parameters |
|---|
field 1: 1.439 GHz 
pulsed (PW)
exposure duration: repeated daily exposure for 1 h/day for 5 consecutive days and 2 days of rest, for 2 or 4 weeks
| SAR: 2 W/kg peak value (brain)
SAR: 0.25 W/kg mean value (whole body)
| field 2: RF
exposure duration: continuous for 2 h
| SAR: 20 W/kg average over mass (brain)
|
FIELD View further expo parametersExposed system:
animal (species/strain): rat/Sprague-Dawley
partial body exposure: head Methods
Endpoint/Measurement parameters/Methodology investigated material: tissue slices (in vitro)
investigation on living organism
investigated organ system: brain/CNS
time of investigation: during and after exposure
Main outcome of study (according to author)
A 1439 MHz TDMA field did not induce observable changes in the permeability of the blood-brain barrier, morphological changes in the cerebellum, or body mass changes . (Study character: medical/biological study, experimental study, full/main study)
Study funded by - Ministry of Education, Culture, and Science, Japan
- Ministry of Posts and Telecommunications, Japan
Published comment on this article:Related articles 
- Sirav B et al. (2011): Effects of radiofrequency radiation exposure on blood-brain barrier...
- Nittby H et al. (2009): Increased blood-brain barrier permeability in mammalian brain 7 days after...
- Masuda H et al. (2009): Effects of 915 MHz electromagnetic-field radiation in TEM cell on the...
- Sirav B et al. (2009): Blood-brain barrier disruption by continuous-wave radio frequency radiation.
- McQuade JM et al. (2009): Radiofrequency-radiation exposure does not induce detectable leakage of albumin...
- Eberhardt JL et al. (2008): Blood-brain barrier permeability and nerve cell damage in rat brain 14 and 28...
- Grafstrom G et al. (2008): Histopathological examinations of rat brains after long-term exposure to...
- Masuda H et al. (2007): Effects of subchronic exposure to a 1439 MHz electromagnetic field on the...
- Masuda H et al. (2007): Effects of acute exposure to a 1439 MHz electromagnetic field on the...
Glossary: albumin, animal, athermal effects, biological, blood-brain barrier, brain, cellular phones, cerebellum, CNS, digital, endpoint, evans blue, exposure, full/main study, immunostaining, injection, in vitro, mean value, MHz, mobile communication, morphological, neurological, organism, partial body exposure, PDC, permeability, pulsed, PW, rat/Sprague-Dawley, SAR, serum, species, strain, TDMA, tissue |
|
|
© 1997 - 2013, Research Center for Bioelectromagnetic Interaction (femu - RWTH Aachen University, Germany). The informational contents of the EMF-Portal are available free of charge for personal and strictly non-commercial purposes. The informational contents of the EMF-Portal may be retrieved, read or printed, but not (i) copied, (ii) changed or (iii) saved in any format, neither electronically nor on other storage media. Permissions for publication, reproduction, commercial purposes or third party propagation of contents of the EMF-Portal – including partial excerpts or revised formats – have to be obtained from the femu Aachen University-copyright holders. By retrieving, reading or printing these documents you expressly state your agreement with all conditions in the fine print. |
|
Sign Up
