To study whether 1.8 GHz radiofrequency irradiation can influence DNA repair in human leukocytes exposed to X-rays.
Leukocytes from four young healthy donors were intermittently exposed to radiofrequency for 24 h, and then irradiated with X-rays at doses of 0.25, 0.5, 1.0 and 2.0 Gy. DNA damage was detected at 0, 15, 45, 90, 150 and 240 min after exposure to X-rays.
all cells were exposed to X-rays after RF exposure or sham exposure
Frequency | 1.8 GHz |
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Type | |
Exposure duration | 5 min on - 10 min off, for 24 hr |
Modulation type | pulsed |
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Duty cycle | 12.5 % |
Repetition frequency | 217 Hz |
Pulse type | rectangular |
Exposure source | |
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Setup | waveguide inside an incubator; cells kept inside the waveguide at a constant temperature; cells placed in the H-field maximum of the standing wave |
Sham exposure | A sham exposure was conducted. |
Measurand | Value | Type | Method | Mass | Remarks |
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SAR | 2 W/kg | average over time | - | - | - |
The data showed that the DNA repair speeds of human leukocytes after X-ray exposure exhibited individual differences among the four donors. Additionally, the intermittent exposures of 1.8 GHz radiofrequency for 24 h did not directly induce a DNA damage or exhibit synergistic effects with X-rays on human leukocytes.
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