To test the generality of radiofrequency radiation-induced changes in 45Ca2+ efflux from avian and feline brain tissues, human neuroblastoma cells were exposed to electromagnetic radiation.
| Exposure | Parameters |
|---|---|
|
Exposure 1:
147 MHz
Modulation type:
AM
Exposure duration:
30 min
|
- |
| Frequency | 147 MHz |
|---|---|
| Exposure duration | 30 min |
| Modulation type | AM |
|---|---|
| Modulation frequency | 16 Hz |
| Modulation depth | 80 % |
| Exposure source |
|
|---|---|
| Chamber | Incubator maintained at 37° |
| Setup | Two flasks were placed inside the Crawford cell |
| Additional info | Two other flasks were placed outside the Crawford cell but in the same incubator which served as control. SAR was determined from incident, reflected and transmitted power measured with 1) an empty Crawford cell 2) a Crawford cell with an empty flask 3) a Crawford cell and flask with culture and 5 ml of growth medium. |
No parameters are specified for this exposure.
Significant 45Ca2+ efflux was obtained at SAR values of 0.05 and 0.005 W/kg. Chinese hamster-mouse hybrid neuroblastoma cells were also shown to exhibit enhanced radiation-induced 45Ca2+ efflux at a SAR of 0.05 W/kg. The results confirm that amplitude-modulated radiofrequency exposition can induce responses in cells of nervous tissue origin from widely different animal species, including humans. The findings are also consistent with the reports of similar findings in avian and feline brain tissue and indicate the general nature of the phenomen.
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