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Auteurs
Yurekli
AI, Ozkan M, Kalkan T, Saybasili H, et al. (2006)
This study examined whether exposure to RFR, at levels seen from base
stations, induced oxidative stress in rats. Nine rats were exposed for
8 days, 7 hours per day, to RFR that simulated far-field exposure. The
frequency was 945 MHz, the power density was 3.67 W/m², and the SAR
was 11.3 mW/kg. Nine rats were sham-exposed.
The results showed
that at baseline the sham rats weighed an average of 162 g, while the
exposed rats weighed 190 g on average. There was a similar difference
in mean weights at the end of the experiment. Blood MDA levels, a marker
of lipid peroxidation, were significantly increased in the exposed rats.
Two markers of enzymatic systems that counterbalance the production of
reactive oxygen species (ROS), SOD and GSH-Px, were also measured in the
blood of the animals. SOD was increased and GSH-Px was decreased. The
authors consider that the decreased GSH-Px concentration may have been
due to the higher consumption of GSH-Px for scavenging the higher production
of ROS. The SOD increase may be a response to the change in GSH-Px.
The paper is not clear
about some aspects of the study. There is no mention of randomization,
and the experiment does not appear to have been done in a double-blind
manner. The difference in the mean weights of the exposed and sham rats
is considerable, and may have had an impact on the results.
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