Impact of 900 MHz electromagnetic field exposure on main male reproductive hormone levels: a Rattus norvegicus model
Research
RF Safe Research Library
Jan 1, 2014
This animal experiment exposed 20 adult male Sprague-Dawley rats to 900 MHz RF-EMF for 1, 2, or 4 hours per day over 30 days, with a sham-exposed control group. Hormone levels (FSH, LH, inhibin B, activin B, prolactin, testosterone) were measured by ELISA before exposure and at 15 and 30 days. After 30 days, the long…
[Effect of low-intensity 900 MHz frequency electromagnetic radiation on rat liver and blood serum enzyme activities].
Research
RF Safe Research Library
Jan 1, 2014
This animal study compared rat liver and blood serum enzyme activities after a total two-hour exposure to low-intensity 900 MHz electromagnetic fields delivered as either a single or fractional schedule. The authors report that creatine kinase (liver and serum) and serum alkaline phosphatase were the most sensitive…
Effects of 900 MHz electromagnetic field emitted by cellular phones on electrocardiograms of guinea pigs.
Research
RF Safe Research Library
Jan 1, 2014
This animal study examined whether RF-EMF from cellular phones affects electrocardiograms in guinea pigs. Thirty guinea pigs were randomized to control (no exposure) or RF-EMF exposure (890–915 MHz; SAR 0.95 W/kg) for 12 hours per day over 30 days. The study reports no significant effects on ECG findings under these…
Spatial learning, monoamines and oxidative stress in rats exposed to 900 MHz electromagnetic field in combination with iron overload.
Research
RF Safe Research Library
Jan 1, 2014
This animal study tested whether 900 MHz EMF exposure, alone or combined with brain iron overload, affects cognition and brain biochemistry in Long-Evans rats. EMF-exposed rats showed impairment in an object exploration task and changes in monoamine content (notably in the hippocampus), while other spatial…
Non-thermal continuous and modulated electromagnetic radiation fields effects on sleep EEG of rats.
Research
RF Safe Research Library
Jan 1, 2013
This animal study examined whether chronic low-level non-thermal 900 MHz electromagnetic radiation alters rat sleep EEG. Rats were exposed for 1 month (1 h/day) to either unmodulated 900 MHz or 900 MHz modulated at 8 and 16 Hz. The abstract reports that REM sleep measures were more affected than slow wave sleep,…
Microwave radiation induced oxidative stress, cognitive impairment and inflammation in brain of Fischer rats.
Research
RF Safe Research Library
Jan 1, 2012
This animal study exposed male Fischer-344 rats to 900 MHz or 1800 MHz microwave radiation for 30 days (2 h/day) and compared outcomes to sham exposure. The authors report significant cognitive impairment along with increased oxidative stress in brain tissue in exposed rats. They also report increased inflammatory…
Human keratinocytes in culture exhibit no response when exposed to short duration, low amplitude, high frequency (900 MHz) electromagnetic fields in a reverberation chamber.
Research
RF Safe Research Library
Jan 1, 2011
This in vitro study exposed normal human epidermal keratinocytes to non-thermal 900 MHz electromagnetic fields in a mode-stirred reverberation chamber under two short-duration conditions. Microarray analysis found only limited gene modulation (20 genes) with small expression ratios and no shared genes across…
Radiofrequency dosimetry in subjects implanted with metallic straight wires: a numerical study.
Research
RF Safe Research Library
Jan 1, 2008
This numerical FDTD study modeled RF exposure at 900 and 1800 MHz in tissue containing thin metallic straight wire implants. The model indicates that the wire can substantially increase local SAR, creating high SAR gradients. Despite this, the authors report that exposures below current safe levels resulted in…
Microscopic observation of living cells during their exposure to modulated electromagnetic fields.
Research
RF Safe Research Library
Jan 1, 2008
This paper describes an exposure and microscopy system designed to continuously observe living cells during exposure to modulated RF-EMF similar to mobile phone signals. Using protocols where the same cells serve as controls before and after exposure, the system was validated with endocytosis measurements. Under 900…
900 MHz radiofrequency-induced histopathologic changes and oxidative stress in rat endometrium: protection by vitamins E and C.
Research
RF Safe Research Library
Jan 1, 2007
This rat study examined 900 MHz radiofrequency exposure (30 min/day for 30 days) and reported biochemical and histopathologic changes in endometrial tissue consistent with oxidative stress and tissue injury. The abstract reports increased NO and MDA and decreased antioxidant enzyme activities (SOD, CAT, GSH-Px) in…