| |
| 900
megahertz electromagnetic field exposure affectsFrom:
Omega TwodayBy Bas O, Odaci E, Kaplan S, Acer N, Ucok K,
Colakoglu S. - 02/18/09 |
| |
|
| |
Department of Anatomy,
Rize University School of Medicine, Rize, Turkey.
The effects of electromagnetic fields (EMFs) emitted by
mobile phones on humans hold special interest due to
their use in close proximity to the brain. The current
study investigated the number of pyramidal cells in the
cornu ammonis (CA) of the 16-week-old female rat
hippocampus following postnatal exposure to a 900
megahertz (MHz) EMF. In this study were three groups of
6 rats: control (Cont), sham exposed (Sham), and EMF
exposed (EMF). EMF group rats were exposed to 900 MHz
EMF (1 h/day for 28 days) in an exposure tube. Sham
group was placed in the exposure tube but not exposed to
EMF (1 h/day for 28 days). Cont group was not placed
into the exposure tube nor were they exposed to EMF
during the study period. In EMF group rats, the specific
energy absorption rate (SAR) varied between 0.016 (whole
body) and 2 W/kg (locally in the head). All of the rats
were sacrificed at the end of the experiment and the
number of pyramidal cells in the CA was estimated using
the optical fractionator technique. Histopathological
evaluations were made on sections of the CA region of
the hippocampus. Results showed that postnatal EMF
exposure caused a significant decrease of the pyramidal
cell number in the CA of the EMF group (P< 0.05).
Additionally, cell loss can be seen in the CA region EMF
group even at qualitative observation. These results may
encourage researchers to evaluate the chronic effects of
900 MHz EMF on teenagers' brains. |
| |
 |
| |
|
