To study the effects of the irradiation emitted by mobile phones on bone mineral density of rats.
The effects of caffeic acid phenethyl ester (CAPE) on the allegedly irradiation-induced changes were also evaluated. CAPE is one of the major components of honeybee propolis. It has been used in folk medicine for many years in Middle East countries. CAPE was found to be a potent free radical scavenger and antioxidant.
48 rats were divided into five groups: 1) control, 2) exposed to 900 MHz, 3) exposed to 900 MHz and CAPE treatment, 4) exposed to 1800 MHz, 5) exposed to 1800 MHz and CAPE treatment.
| Exposure | Parameters |
|---|---|
|
Exposure 1:
900 MHz
Modulation type:
CW
Exposure duration:
repeated daily exposure, 30 min/day, 5 days/week, for 4 weeks
|
|
|
Exposure 2:
1,800 MHz
Modulation type:
CW
Exposure duration:
repeated daily exposure, 30 min/day, 5 days/week, for 4 weeks
|
|
| Frequency | 900 MHz |
|---|---|
| Type | |
| Exposure duration | repeated daily exposure, 30 min/day, 5 days/week, for 4 weeks |
| Modulation type | CW |
|---|
| Exposure source | |
|---|---|
| Setup | The exposure system consisted of a ventilated round plastic tube cage (12 cm long, 5.5 cm in diameter) and a half-wave dipole antenna. The whole body of the rat was positioned in close contact above the antenna. |
| Sham exposure | A sham exposure was conducted. |
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| power density | 1 mW/cm² | mean | measured | - | ± 0.4 mW/cm² |
| SAR | 2 W/kg | peak value | unspecified | - | - |
| Frequency | 1,800 MHz |
|---|---|
| Type | |
| Exposure duration | repeated daily exposure, 30 min/day, 5 days/week, for 4 weeks |
| Modulation type | CW |
|---|
| Exposure source |
|
|---|
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| power density | 1 mW/cm² | mean | measured | - | ± 0.4 mW/cm² |
| SAR | 2 W/kg | peak value | unspecified | - | - |
Bone mineral densities were decreased in the exposed groups and increased in the CAPE treatment groups, but the changes were not significant.
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