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.
General category: mobile communication system, digital mobile phone, PDC, TDMA
|field 1: 1.439 GHz |
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 parameters
animal (species/strain): rat/Sprague-Dawley
partial body exposure: head
Methodsinvestigated 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
Published comment on this article:Related articles
- Ministry of Education, Culture, and Science, Japan
- Ministry of Posts and Telecommunications, Japan
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
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