To investigate the effects of 9450 MHz microwaves and extremely low frequency magnetic fields on the phagocytic activity of rat macrophages in control rats and those treated with vitamins C and E.
Exposure | Parameters |
---|---|
Exposure 1:
9.45 GHz
Exposure duration:
1 h/day for 21 days
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|
Exposure 2:
50 Hz
Exposure duration:
3 h/day for 3 weeks
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|
Rats were divided into four groups: group 1 served as control, group 2 was MW (microwave) exposed, group 3 and 4 were MW exposed and injected with vitamin E (150 mg/Kg/day) and vitamin C 150 mg/kg/day), respectively.
Frequency | 9.45 GHz |
---|---|
Type | |
Exposure duration | 1 h/day for 21 days |
Exposure source | |
---|---|
Chamber | methacrylate cages (20 cm x 10.5 cm x 10 cm) with ventilation holes |
Setup | anechoic chamber (70 cm x 47 cm x 47 cm); |
Sham exposure | A sham exposure was conducted. |
Measurand | Value | Type | Method | Mass | Remarks |
---|---|---|---|---|---|
SAR | 1.8 mW/g | mean | measured | whole body | determined by calorimetic method. |
power density | 2.65 mW/cm² | - | - | - | - |
Frequency | 50 Hz |
---|---|
Type | |
Waveform | |
Exposure duration | 3 h/day for 3 weeks |
Exposure source | |
---|---|
Chamber | Methacrylate cages (20 cm x 10.5 cm x 10 cm) |
Setup | 2 pairs of circular Helmholtz coils; cages placed between the coils. |
Sham exposure | A sham exposure was conducted. |
Measurand | Value | Type | Method | Mass | Remarks |
---|---|---|---|---|---|
magnetic flux density | 750 µT | unspecified | measured | - | - |
The results of the microwave-exposed group showed that the microwave increased the phagocytic activity of rats treated additionally with vitamin C. The increase in phagocytic activity of other microwave-exposed groups and magnetic field-exposed groups were found to be not significant. Comparison of microwave-exposed and microwave-plus-vitamin-C-treated groups showed that vitamin C seemed to play an important role to increase the phagocytic activity of rats. The microwave parameters under investigation were not found to be foremost. Rectal temperature of groups exposed to microwaves were found to be significantly higher.
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