Hardell L, Carlberg M. · 2009
Researchers conducted two case-control studies from 1997 to 2003 assessing mobile and cordless phone use in relation to brain tumors. They analyzed 905 malignant brain tumor cases, 1,254 benign cases, and 2,162 population-based controls. Ipsilateral mobile phone use for over 10 years showed an odds ratio of 3.3 for astrocytoma, while cordless phone use showed an odds ratio of 5.0. For acoustic neuroma, ipsilateral mobile phone use with >10 year latency had an odds ratio of 3.0, and cordless phone use had an odds ratio of 2.3. The annual age-adjusted incidence of astrocytoma increased significantly by 2.16% from 2000 to 2007 in Sweden.
Han YY, Kano H, Davis DL, Niranjan A, Lunsford LD. · 2009
The authors conducted a PubMed search and reviewed 10 case-control studies, one cohort study, and a meta-analysis on cell phone use and acoustic neuroma risk. Most studies did not find an association between cell phone use and acoustic neuroma, but some studies with 10 years or more of follow-up showed an association. The meta-analysis of three case-control studies found a 2.4-fold greater risk of ipsilateral acoustic neuroma for those who used cell phones for at least 10 years.
Dahmen N, Ghezel-Ahmadi D, Engel A. · 2009
Results showed laboratory signs of thyroid dysfunction, liver dysfunction, and chronic inflammatory processes in some EHS patients, with significant differences in TSH and ALT/AST between groups. The hypotheses that anemia or kidney dysfunction play a major role in EHS were refuted.
Chauvin S et al. · 2009
Researchers used exposimeters to record individual exposure to radiofrequency electromagnetic fields for 23 technical operations personnel and 22 other workers. Exposure densities were quantified using 229 exposure indicators for each of the 45 subjects. Cluster analysis did not reliably separate the two groups, although some exposure indicators differed significantly between them. A learning group method also failed to discover a predictive law to identify technical operational personnel as a subgroup.
Budak GG, Muluk NB, Budak B, Oztürk GG, Apan A, Seyhan N. · 2009
Researchers studied thirty-six infant male New Zealand rabbits divided into four groups with different exposure regimens. Group 2 received extrauterine exposure for 15 minutes daily over 14 days, Group 3 received intrauterine exposure for 15 minutes daily over 7 days, and Group 4 received both exposures. Distortion product otoacoustic emissions were measured across frequencies from 1.0 to 8.0 kHz. Extrauterine exposure alone decreased emission amplitudes at 4.0 and 6.0 kHz compared with controls. Combined intrauterine and extrauterine exposure increased amplitudes at 1.5, 3.0, and 4.0 kHz relative to controls and the extrauterine group.
Budak GG et al. · 2009
Researchers studied 18 pregnant and 18 non-pregnant New Zealand White rabbits, randomly divided into four groups. Nine pregnant and nine non-pregnant rabbits were exposed to 1800 MHz GSM-like RFR for 15 minutes daily over 7 days, while the remaining rabbits were not exposed. Cochlear function was measured using distortion product otoacoustic emissions at frequencies from 1.0 to 8.0 kHz. In pregnant rabbits, DPOAE amplitudes did not differ between exposed and unexposed groups except at 2.0 kHz. In non-pregnant rabbits, exposed animals showed lower DPOAE amplitudes at 1.0 to 4.0 kHz compared to unexposed animals.
Budak GG, Muluk NB, Budak B, Oztürk GG, Apan A, Seyhan N. · 2009
Blettner M et al. · 2009
The study aimed to investigate whether proximity to mobile phone base stations and risk perception are associated with health complaints. Among 30,047 participants, 18.7% were concerned about adverse health effects and 10.3% attributed personal health effects to base station exposure. Participants concerned about or attributing health effects to base stations and those living within 500 meters reported slightly more health complaints than others. The slightly higher prevalence of health complaints near base stations could not be fully explained by attributions or concerns.
Berg-Beckhoff G et al. · 2009
Researchers conducted a cross-sectional study in 2006 with 3526 participants living mainly in urban regions to test whether low-level RF-EMF from mobile phone base stations was related to health disturbances. Exposure was assessed with a dosimeter measuring different RF-EMF frequencies, and health outcomes were collected via postal questionnaires on sleep disturbances, headaches, health complaints, and mental and physical health. No differences in median health scores were found between exposed and non-exposed participants, and measured RF-EMFs were not associated with adverse health effects.
Belyaev IY, Markovà E, Hillert L, Malmgren LO, Persson BR. · 2009
The study investigated microwaves from UMTS and GSM mobile phones on human lymphocytes. UMTS microwaves inhibited the formation of DNA repair foci in lymphocytes from both hypersensitive and healthy individuals. The inhibition persisted for up to 72 h after exposure, longer than the stress response to heat shock. Effects of GSM microwaves depended on carrier frequency. No significant differences were found between hypersensitive and healthy groups, except for specific responses to UMTS and GSM-915 MHz microwaves.
Augner C, Hacker GW. · 2009
The study examined whether people who believe they live close to mobile phone base stations show greater psychological or psychobiological strain. Fifty-seven participants completed questionnaires and provided saliva samples for alpha-amylase, cortisol, immunoglobulin A, and substance P. Self-declared base station neighbors (within 100 meters) had higher salivary alpha-amylase and higher scores on several symptom checklist subscales and the global strain index, but no difference in EMF-related health concerns.
Atay T et al. · 2009
Researchers investigated the effects of electromagnetic waves from cellular phones operating at 900 to 1800 MHz on bone mineral density of the human iliac bone wings in 150 male volunteers. Participants were divided into two groups based on the iliac side exposed to electromagnetic waves (group 1) and the unexposed side (group 2). The mean daily phone carriage duration was 14.7 hours and the mean duration of phone use was 6.2 years. Dual-energy x-ray absorptiometry measurements showed slightly lower values on the exposed side but the difference was not statistically significant (P > 0.05), and values were not as low as in osteopenia or osteoporosis.
Abramson MJ et al. · 2009
Hässig M, Jud F, Naegeli H, Kupper J, Spiess BM. · 2009
Researchers conducted a cohort study tracking the geographical location of each dam and calf from conception through the fetal period to slaughter, with particular emphasis on the first trimester of gestation (organogenesis). Antioxidant activities of superoxide dismutase, catalase, and glutathione peroxidase were measured in aqueous humor to evaluate redox status. Among 253 calves, 79 (32%) had nuclear cataract and 9 (3.6%) had severe nuclear cataract. Oxidative stress was increased in eyes with cataract, with an odds ratio of 0.80 per kilometer distance from the nearest base station and a 95% confidence interval of 0.62,0.93, and the authors state that it has not been shown that antennas actually affected stress.
Agarwal A et al. · 2009
After liquefaction, neat semen samples were divided into two aliquots, with one exposed to cellular phone radiation in talk mode for 1 hour and the other serving as an unexposed control under identical conditions. Exposed samples showed a significant decrease in sperm motility and viability, an increase in ROS level, and a decrease in ROS-TAC score. Levels of total antioxidant capacity and DNA damage showed no significant differences between exposed and unexposed samples.
Capone F et al. · 2009
Researchers used transcranial brain stimulation to study the effect of PEMFs on cortical excitability in 22 healthy volunteers. After 45 minutes of PEMF exposure, intracortical facilitation increased by about 20% while other cortical excitability parameters remained unchanged. Sham field exposure produced no effects. The increase in paired-pulse facilitation suggests PEMFs may enhance cortical excitatory neurotransmission.
Luria R, Eliyahu I, Hareuveny R, Margaliot M, Meiran N. · 2009
The study examined time-dependent effects of GSM phone radiation on human cognitive function. Forty-eight healthy right-handed men performed a spatial working memory task while exposed to phones on the left, right, or sham. Right-hand responses were slower during left-side exposure in the first two blocks compared to right-side and sham. Researchers concluded exposure duration, responding hand, and exposure side may affect detectability of RFR effects.
Zhijian C et al. · 2009
Researchers used the in vitro comet assay to determine whether 1.8-GHz radiofrequency radiation can influence DNA repair in human leukocytes exposed to X-rays. Leukocytes from four young healthy donors were intermittently exposed to RFR at a SAR of 2 W/kg for 24 hours with fields on for 5 minutes and off for 10 minutes, then irradiated with X-rays at doses of 0.25, 0.5, 1.0 and 2.0 Gy. DNA damage was measured at 0, 15, 45, 90, 150 and 240 minutes after X-rays using percent tail DNA, and repair speed was assessed via DNA repair percentage. The results showed individual differences in DNA repair speeds among the four donors. Intermittent RFR exposure did not directly induce DNA damage or show synergistic effects with X-rays.
Viel JF et al. · 2009
Researchers enrolled 200 randomly selected people who were supplied with personal exposure meters for 24 h measurements and kept a time-location-activity diary. They calculated the proportion of measurements above 0.05 V/m and the maximum electric field strength for each radiofrequency. Most measurements were below the detection limit, with FM having 12.3% above threshold, and maximum field strength never exceeded 1.5 V/m. GSM and DCS exposure peaked at 280 m and 1000 m from antennas, FM showed a downward trend within 10 km, while UMTS and TV signals did not vary with distance.
Viel JF, Cardis E, Moissonnier M, de Seze R, Hours M. · 2009
Sannino A et al. · 2009
Lymphocytes were collected at 72 hours to measure micronuclei frequency in cytokinesis-blocked binucleated cells. Four donors exhibited a significant reduction in micronuclei after RF pre-exposure, indicating an adaptive response. One donor showed no significant difference in micronuclei between pre-exposed and unexposed cells, indicating a non-responder. The data indicated heterogeneity in the induction of an adaptive response between individuals exposed to RF radiation.
Pérez-Castejón C et al. · 2009
Researchers exposed human astrocytoma cells (Clonetics line 1321N1) to a 9.6 GHz carrier wave amplitude-modulated by extremely low frequency pulses in a GTEM cell. The exposure parameters included pulse widths of 100-120 ns, pulse repetition frequencies of 100-800 Hz, power of 0.34-0.60 mW, electric field strength of 1.25-1.64 V/m, and a SAR of 4.0 x 10-4 W/Kg. Cells were exposed for 15, 30, 60 minutes, and 24 hours using a double-blind method with sham controls. Cytoskeleton proteins, cell morphology, and viability were unchanged, but cell proliferation rate increased significantly after 24 hours of exposure. Hsp-70 and Bcl-2 antiapoptotic proteins were present in both control and exposed samples, while connexin 43 protein expression increased in exposed samples.
Kundi M, Hutter HP. · 2009
Cross-sectional investigations of subjective health as a function of distance or measured field strength found indications for an effect of exposure that is likely independent of concerns and attributions. Experimental studies applying short-term exposure to base station signals gave various results, but there is weak evidence that UMTS and to a lesser degree GSM signals reduce wellbeing in persons that report to be sensitive to such exposures. Two ecological studies of cancer near base stations reported a strong increase in incidence within 350 and 400 meters, but limitations prevent firm conclusions.
Frei P et al. · 2009
Researchers measured RF-EMF exposure of 166 volunteers from Basel, Switzerland, using personal exposure meters carried for one week. Mean weekly exposure across all RF-EMF sources was 0.13 mW/m2, ranging across individuals from 0.014 to 0.881 mW/m2. Exposure varied considerably between persons and locations but was fairly consistent within persons.
Brescia F et al. · 2009
Researchers measured reactive oxygen species (ROS) production in human lymphoblastoid cells exposed to a 1950 MHz UMTS signal at Specific Absorption Rates of 0.5 and 2.0 W/kg. Exposures ranged from short durations of 5 to 60 minutes up to 24 hours, and the study also tested RF radiation given before or at the same time as ferrous ions. RF exposure did not increase ROS formation or affect cell viability, and combining RF with ferrous ions did not produce more ROS than ferrous ions alone.
