J-S, Huang T-Q, Kim T-H, Kim JY, et al. (2006):
aim in this study was to determine whether RFR exposure induces a non-thermal
stress response. They exposed human T-lymphocyte Jurkat cells and rat
primary astrocytes to RFR at 1736 MHz at an average SAR of either 2 or
20 W/kg for 30 minutes or 1 hour. Temperature was strictly controlled
at 37 ± 0.2 ºC throughout the exposure.
There was no detectable difference in the expression of HSPs 90. 70, and
27, compared to sham exposure. Likewise no difference was seen in the
expression of mitogen-activated protein kinases (MAPKs), which are also
involved in the stress pathways in cells. Cells were also exposed to 12-O-tetradecanoylphorbol
13-acetate (TPA), which induces a stress response. Addition of RFR exposure
to the TPA-treated cells did not enhance the activity of MAPKs.