To study the effects of 900 MHz and 1800 MHz continuous wave radiofrequency exposure on the permeability of blood-brain barrier in young adult male and female rats.
The rats were divided into four exposure groups and two control groups: 1) control males (n=8), 2) control females (n=9), 3) 900 MHz exposed males (n=8), 4) 900 MHz exposed females (n=9), 5) 1800 MHz exposed males (n=9) and 6) 1800 MHz exposed females (n=9).
| Exposure | Parameters |
|---|---|
|
Exposure 1:
900 MHz
Modulation type:
CW
Exposure duration:
continuous for 20 min
|
|
|
Exposure 2:
1,800 MHz
Modulation type:
CW
Exposure duration:
continuous for 20 min
|
|
animals were divided into six groups: i) female control ii) male control iii) female exposed to 900 MHz iv) male exposed to 900 MHz v) female exposed to 1800 MHz vi) male exposed to 1800 MHz
| Frequency | 900 MHz |
|---|---|
| Type | |
| Charakteristic | |
| Exposure duration | continuous for 20 min |
| Modulation type | CW |
|---|
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| electric field strength | 12.8 V/m | minimum | - | - | - |
| electric field strength | 13.9 V/m | maximum | - | - | - |
| Frequency | 1,800 MHz |
|---|---|
| Type | |
| Charakteristic | |
| Exposure duration | continuous for 20 min |
| Modulation type | CW |
|---|
| Exposure source |
|
|---|---|
| Distance between exposed object and exposure source | 10 cm |
| Sham exposure | A sham exposure was conducted. |
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| electric field strength | 12.3 V/m | minimum | - | - | - |
| electric field strength | 13 V/m | maximum | - | - | - |
The data revealed that 20 min radiofrequency exposure of 900 MHz and 1800 MHz increases significantly the permeability of blood-brain barrier of male rats. There was no change in female rats. However, female control rats exhibited a significant higher blood-brain barrier permeability (similar to those of the exposed rats) than the male control rats.
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