To study reactivity to electric footshock, blood levels of cholinesterase and sulfhydryl groups, urinary output of 17-ketosteroids, and deficits of performance in the shuttle box during or after chronic microwave exposure of rats.
| Exposure | Parameters |
|---|---|
|
Exposure 1:
2.45 kHz
Modulation type:
CW
Exposure duration:
14 wk (7h/d; 7d/wk)
|
|
Rats were placed randomly in either a microwave chamber or sham irradiation chamber.
| Frequency | 2.45 kHz |
|---|---|
| Type | |
| Exposure duration | 14 wk (7h/d; 7d/wk) |
| Modulation type | CW |
|---|
| Exposure source |
|
|---|---|
| Chamber | Chamber/ 3,5 x 3,5 x 2,75 m, Plexiglass cage/ 20 cm x 10 cm x 9.5 cm |
| Additional info | Electric field was parallel to the long axis of the cage and the rat. |
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| SAR | 700 µW/g | average over mass | cf. remarks | whole body | twin well calorimetry |
| power density | 25 W/m² | average over mass | measured | - | - |
Weekly measures of body mass and food intake did not reveal statistically significant effects of microwave exposure. Assessments of threshold for electric-footshock detection revealed a significant difference between microwave and sham-exposed rats. Assessments of cholinesterase and sulfhydryl groups in blood and 17-ketosteroids in urine did not distinguish the two groups of animals. Behavioral measures were made at the end of the 14-week exposure. Statistically significant differences between microwave- and sham-exposed animals were observed for these measures. Examination of adrenal tissue, plasma electrolytes, and organ masses after 14 weeks of irradiation revealed no difference between the two groups of animals.
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