To study the effect of 3.1 GHz pulsed microwave radiation on the chemical and functional properties of microtubules in vitro: 1. Colchicine-binding properties of microwave-irradiated brain extracts, 2. the assembly of microtubules in brain extracts during microwave irradiation, 3. the effect of microwave irradiation on the protein transport in nerve axons in vitro.
| Exposure | Parameters |
|---|---|
|
Exposure 1:
3.1 GHz
Modulation type:
pulsed
Exposure duration:
300, 480, 600 and 900 s
|
|
|
Exposure 2:
3.1 GHz
Modulation type:
pulsed
Exposure duration:
10 min
|
|
|
Exposure 3:
3.1 GHz
Modulation type:
pulsed
Exposure duration:
continuous for 24 h
|
|
Colchicine binding; in vivo studies
| Frequency | 3.1 GHz |
|---|---|
| Exposure duration | 300, 480, 600 and 900 s |
| Modulation type | pulsed |
|---|---|
| Pulse width | 1.4 µs |
| Repetition frequency | 200 Hz |
| Exposure source | |
|---|---|
| Distance between exposed object and exposure source | 0.4 m |
| Setup | Samples kept in 2 PTFE containers with inner dimensions 24 x 21 x 3 mm, one was used for irradiation and the other served as control, which was placed 1 m in front of a wall lined with microwave absorbing material. |
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| power density | 240 W/m² | minimum | measured | - | 520 W/m² max value |
| Frequency | 3.1 GHz |
|---|---|
| Exposure duration | 10 min |
| Modulation type | pulsed |
|---|---|
| Pulse width | 1.4 µs |
| Repetition frequency | 200 Hz |
| Exposure source |
|
|---|
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| power density | 900 W/m² | mean | measured | - | - |
| Frequency | 3.1 GHz |
|---|---|
| Exposure duration | continuous for 24 h |
| Modulation type | pulsed |
|---|---|
| Pulse width | 1.4 µs |
| Repetition frequency | 100 Hz |
| Exposure source |
|
|---|---|
| Additional info | Rabbit vagus nerves and nodose ganglia in 2 blocks, containing five two compartment chambers were either irradiated or served as control. |
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| power density | 300 W/m² | unspecified | measured | - | - |
The results did not reveal any noticeable effect of microwave irradiation on microtubules or axonal transport.
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