To assess chromosome aberrations and sister chromatid exchange frequencies among users who used digital mobile phones frequently for a maximum period of 4-5 hours a day, continuously for 2 years (non-smoker-nonalcoholic subjects and smoker-alcoholics). In addition blood samples were treated with the known mutagen mitomycin C to find out comutagenic/synergistic effect.
Modulation type: pulsed
Exposure duration: average 1 to 3 or 3 to 5 hours per day for at least 2 years
48 individuals were selected for blood sample work-up. Half of the subjects selected used mobile phones over at least 2 years which employed GMSK modulations at uplink frequencies of 935 to 960 MHz and downlinks at 890 to 915 MHz and the other half served as control.
|Exposure duration||average 1 to 3 or 3 to 5 hours per day for at least 2 years|
No parameters are specified for this exposure.
There was a significant increase in dicentric chromosomes among mobile phone users who were smoker-alcoholic as compared to their controls; similarly, a significant increase in dicentric chromosomes was revealed in smoker-alcoholic mobile phone users in comparison to nonsmoker and nonalcoholic mobile phone users. After mitomycin C treatment of blood samples, there was a significant increase in dicentric chromosomes and ring chromosomes in both smoker-alcoholic and nonsmoker-nonalcoholic groups.