ID Number		926
Study Type		In Vitro
Model		50, 147, 450, 917, 2450 MHz and 8-12 GHz exposure of giant algae cells and analysis of membrane biochemistry and voltage potential
Details		Chara braunii and Nitella flexilis algae cells were exposed to CW bursts at 50, 147, 450, or 917 MHz or frequency sweeps from 8-12 GHz (AM-50 Hz and other PW modulations) at power density levels from from 0.1 to 5000 W/m2. No effect of RF exposure on the resting electric potential across the membrane of the internal vacuoles was observed. In similar studies, the authors exposed the same large algae cells to 2450 MHz (CW in bursts of 20 milliseconds spaced 10 seconds apart) for up to 1 hour at an SAR of 11 W/kg and observed no effect on resting membrane potential, even though significant elevations in culture temperature were observed. This study was in contrast to earlier reports (Bioelectromagnetics (1984) 5:357-360; Bioelectromagnetics (1982) 3:393-400) but the authors suggested the previous findings were likely the result of experimental error.
Findings		No Effects (even at thermal levels)
Status		Completed With Publication
Principal Investigator		Washington University, St. Louis MO, USA - wfp@ee.wustl.edu
Funding Agency		Private/Instit.
Country		UNITED STATES
References		Gokhale, AV et al. Radiation Research, (1985) 102:300-306 Gokhale, AV et al. J Microwave Power, (1985) 20:43-44 Brunkard, KM et al. IEEE Trans Biomed Eng, (1985) 32:617-620 Brunkard, KM et al. Bioelectromagnetics, (1984) 5:353-356 Gokhale, AV et al. IEEE Trans Microwave Theory Tech, (1984) 32:795-797 Gokhale, AV et al. Bioelectromagnetics, (1984) 5:357-360 Barsoum, YH et al. Bioelectromagnetics, (1982) 3:393-400 Barsoum, YH et al. J. Membrane Biol., (1982) 65:81-87 Pickard, WF et al. J. Membrane Biol., (1981) 61:39-54
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