Hardell L, Carlberg M. · 2012
Researchers analyzed survival of glioma patients in relation to wireless phone use. For glioma overall, wireless phone use gave a hazard ratio of 1.1, and with more than 10-year latency the hazard ratio was 1.2. Low-grade astrocytoma showed a hazard ratio of 0.5, while glioblastoma showed a hazard ratio of 1.1, increasing to 1.3 with long latency. In the highest cumulative use tertile (>426 hours), glioblastoma hazard ratio was 1.2. The study included 1,251 malignant brain tumor cases diagnosed 1997–2003, followed until May 2012.
Fattahi-Asl J et al. · 2012
Fifty human serum wells from 25 normal healthy donors were labeled with ruthenium for an immunoassay and placed into two batches. The first batch was exposed to 900 MHz radiation from a Nokia 1202 cell phone in speech mode for 30 minutes. Ferritin levels in the exposed batch averaged 84.94 ± 1.04 μg/L versus 87.25 ± 0.83 μg/L in the unexposed batch, a significant decrease (P = 0.029).
Eskander EF, Estefan SF, Abd-Rabou AA. · 2012
Researchers assessed the role of exposure to radio frequency radiation from mobiles or base stations on human hormone profiles. The study showed significant decreases in volunteers' ACTH, cortisol, thyroid hormones, prolactin for young females, and testosterone levels.
El-Bediwi AB, Saad M, El-Kott AF, Eid E. · 2012
Researchers investigated the effects of mobile phone electromagnetic radiation on blood viscosity, plasma viscosity, hemolysis, osmotic fragility, and blood components in rats. Red blood cells, white blood cells, and platelets were broken after exposure. Blood viscosity and plasma viscosity values increased while osmotic fragility value decreased after exposure.
Carlberg M, Hardell L. · 2012
Researchers conducted two case-control studies on brain tumours diagnosed from 1997 to 2003, including living cases and controls aged 20 to 80 and an additional study on deceased cases. Pooled results showed ipsilateral mobile phone use for more than 10 years gave an odds ratio of 2.9 (95% CI 1.8-4.7) and cordless phone use gave an odds ratio of 3.8 (95% CI 1.8-8.1), and the odds ratio increased significantly with each 100 hours of cumulative wireless phone use and each year of latency. High-grade glioma showed ipsilateral mobile phone OR 3.9 (95% CI 2.3-6.6) and cordless phone OR 5.5 (95% CI 2.3-13); heredity gave OR 3.4 (95% CI 2.1-5.5) with no interaction, and head X-ray gave OR 1.3 (95% CI 1.1-1.7) without interaction.
Briggs D, Beale L, Bennett J, Toledano MB, de Hoogh K. · 2012
Researchers developed and field-validated a GIS-based exposure model called Geomorf to estimate radio-frequency power density around mobile phone masts. The model uses a modified Gaussian formulation based on power output, antenna height, tilt, and the surrounding propagation environment, with a visibility function for topographic obstruction. Calibration used field data from 151 rural measurement sites with 1510 antenna-specific measurements and 50 urban sites with 658 antenna-specific measurements. Different parameter settings were needed for urban and rural areas to achieve optimum results.
Bortkiewicz A, Gadzicka E, Szymczak W, Zmyślony M. · 2012
Heart rate was higher in exposed groups than in controls. Both exposed groups showed significantly higher VLF and LF values than controls and exhibited sympathetic dominance with LF/HF ratio of 1.3 ± 0.35. The authors concluded that radiofrequency EMF exposure may affect neurovegetative regulation.
Bortkiewicz A et al. · 2012
The study surveyed 181 men and 319 women from 500 households in five regions of Łódź, measuring electric fields in flats near base stations. Electric field strength above 0.8 V/m was found in 12 % of flats, and no significant correlation was observed between field strength and distance from the base stations. Headache was reported by 57 % of participants, most often by those living 100–150 m from a base station (p=0.013), while impaired memory was reported by 24.4 % of participants, mainly by those living farther than 150 m (p=0.004). The authors noted that the lack of correlation between measured electric field strength and symptoms, contrasted with distance-related symptom patterns, suggests new exposure metrics may be needed.
Baste V, Moen BE, Oftedal G, Strand LA, Bjørge L, Mild KH. · 2012
The study was a cohort study of Royal Norwegian Navy servicemen linked to the Medical Birth Registry of Norway, including singleton offspring born between 1967 and 2008 (n = 37,920). Exposure during the last 3 months before conception (acute) and exposure more than 3 months before conception (nonacute) were analyzed. Perinatal mortality and preeclampsia increased after service aboard fast patrol boats during an acute period and also after increased estimated radiofrequency exposure during an acute period, compared with service aboard other vessels. No associations were found between nonacute exposure and any of the reproductive outcomes.
Avendaño C, Mata A, Sanchez Sarmiento CA, Doncel GF. · 2012
Researchers exposed sperm from 29 healthy donors to a Wi-Fi-connected laptop for four hours. Exposed sperm had significantly lower progressive motility and more DNA fragmentation than unexposed sperm. Sperm viability did not differ between groups.
Alhusseiny A, Al-Nimer M, Majeed A. · 2012
Researchers studied 356 participants (129 males, 227 females) grouped into healthy subjects, patients with ischemic heart disease, and patients with other cardiac diseases. ECGs were recorded with the phone off and then on for 40 seconds of ringing at belt level and over the precordium. These changes were not observed in female patients with ischemic heart disease.
Cam ST, Seyhan N. · 2012
Researchers collected hair samples from eight healthy human subjects before and after they used a 900-MHz GSM mobile phone for 15 and 30 minutes. Single-strand DNA breaks in hair root cells were measured using the comet assay. Both exposure durations significantly increased DNA single-strand breaks, and the 30-minute exposure caused significantly more damage than the 15-minute exposure.
Di S et al. · 2012
Cho H, Seo YK, Yoon HH, Kim SC, Kim SM, Song KY, Park JK. · 2012
Researchers exposed human bone marrow mesenchymal stem cells to extremely low frequency electromagnetic fields for 12 days. The exposure inhibited cell growth and changed gene expression levels. The neural stem cell marker nestin decreased while neural cell markers MAP2, NEUROD1, NF-L, and Tau increased. Immunofluorescence confirmed neural cell protein expression including oligodendrocyte marker O4 and astrocyte marker GFAP.
Vecchio F et al. · 2012
Eyes-closed resting EEG data were recorded in ten patients affected by focal epilepsy in real and sham exposure conditions and compared with 15 age-matched normal subjects from previous reference studies. The GSM device was turned on for 45 minutes in the GSM condition and off for 45 minutes in the sham condition, with the phone always on the left side. Spectral coherence evaluated inter-hemispheric synchronization across delta, theta, and alpha sub-bands. Compared with controls, epileptic patients showed significantly higher inter-hemispheric coherence of temporal and frontal alpha rhythms in the GSM condition versus sham. The authors suggest that GSM electromagnetic fields may affect inter-hemispheric alpha synchronization in epileptic patients.
Vecchio F et al. · 2012
Eleven healthy adults underwent two EEG sessions one week apart in a crossover, placebo-controlled, double-blind paradigm. In each session, participants performed a visual go/no-go task before the real GSM exposure or after the sham condition. During the real GSM session, the temporal cortex was continuously exposed to GSM-EMFs for 45 min. High-frequency alpha rhythm power decrease was reduced and reaction times to go stimuli were faster after GSM exposure compared to before.
Zeni O et al. · 2012
When lymphocytes from six donors were pre-exposed to RF at 0.3W/kg SAR and then treated with MMC, these cells showed a significant reduction in the frequency of MN compared with cells treated with MMC alone, indicating adaptive response. An earlier study found that lymphocytes stimulated for 24h, exposed for 20h to a 900MHz RF GSM signal at 1.25W/kg SAR and then treated with 100ng/ml MMC also exhibited adaptive response. In the current study, cells from nine healthy human volunteers were stimulated for 24h with phytohaemagglutinin, exposed for 20h to a 1950MHz RF UMTS signal at SARs of 1.25, 0.6, 0.3, and 0.15W/kg, then treated at 48h with 100ng/ml mitomycin C, and micronuclei frequency was recorded at 72h using the cytokinesis-block method.
Sun W, Shen X, Lu D, Fu Y, Lu D, Chiang H · 2012
Researchers investigated the effects of 1.8-GHz RFR at different intensities on EGF receptor clustering and phosphorylation in human amniotic (FL) cells. Receptor clustering was analyzed by immunofluorescence with confocal microscopy, and phosphorylation was measured by western blot. Exposure at SAR 0.5, 1.0, 2.0, and 4.0 W/kg significantly induced clustering and phosphorylation, while SAR 0.1 W/kg had no significant effect. The authors concluded that membrane receptors may be a primary target of RFR, with a dose-rate threshold between 0.1 and 0.5 W/kg and a sigmoid dependence on intensity.
Shahbazi-Gahrouei D et al. · 2012
Researchers evaluated how cell phone radiation affects chorionic gonadotropin immunoassays using human serum samples. Radiation altered measured serum levels, especially at 100, 250, and 500 mIU/mL concentrations. The higher 1.09 W/kg SAR exposure caused a significant loss compared to the lower 0.69 W/kg SAR exposure.
Kumar S, Behari J, Sisodia R. · 2012
Researchers exposed 70-day-old male albino rats to 10-GHz EMF for 2 hours a day over 45 days. Creatine kinase phosphorylation increased in sperm after exposure. Melatonin and MDA levels decreased in exposed rats. The authors concluded that microwave exposure could adversely affect male fertility.
Joseph W, Goeminne F, Vermeeren G, Verloock L, Martens L. · 2012
Researchers assessed electromagnetic exposure from 14 types of air traffic control systems for both workers and the general public. In total, 50 sites were investigated at 1,073 locations in the frequency range of 255 kHz to 24 GHz. Two system types, Non-Directional Beacons (up to 881.6 V m) and DVOR (up to 92.3 V m), exhibited levels requiring recommended minimum distances so that ICNIRP reference levels are not exceeded. When multiple radiofrequency sources were present together, the air traffic control source was found to dominate total exposure in its neighborhood.
Joseph W, Verloock L, Goeminne F, Vermeeren G, Martens L. · 2012
Researchers measured radio frequency (RF) exposure at 311 locations across Belgium, the Netherlands, and Sweden, covering six types of environments including rural, residential, urban, suburban, office, and industrial. Exposure ratios for total field values ranged from 3.1% in rural environments to 9.4% in residential environments, relative to ICNIRP reference levels. Median exposures were highest in urban environments at 0.74 V m(-1) and lowest in rural environments at 0.09 V m(-1). GSM contributed more than 60% of the total electric field on average, while the emerging technologies LTE and WiMAX each contributed on average less than 1%.
Joseph W, Goeminne F, Vermeeren G, Verloock L, Martens L. · 2012
Researchers assessed electromagnetic field exposure of workers and the general public from non-directional beacons used for air traffic control. The maximum electric fields exceeded ICNIRP reference levels at all seven sites, and magnetic fields exceeded those levels at two of the seven sites for occupational exposure. The highest measured occupational electric field value was 881.6 V/m and the highest magnetic field value was 9.1 A/m.
Joseph W, Goeminne F, Verloock L, Vermeeren G, Martens L. · 2012
Researchers investigated occupational and general public exposure to VHF/UHF radio transmissions used for air traffic control communication, conducting measurements at three transmission centres. Electric fields ranged from 0.2 to 21.1 V m(-1) for workers and from 0.007 to 8.0 V m(-1) for the general public, with averages of 5.2 V m(-1) and 0.7 V m(-1) respectively. All measured values satisfied the International Commission on Non-ionizing Radiation Protection guidelines.
Joseph W et al. · 2012
Researchers measured personal radio frequency electromagnetic field exposure in Belgium, Switzerland, Slovenia, Hungary, and the Netherlands across microenvironments such as homes, public transport, and outdoors. From those field measurements, whole-body absorption values were calculated for a 1-year-old child model and an adult male model and compared for the five countries. The maximum mean whole-body absorption was 3.4 µW/kg for the child and 1.8 µW/kg for the adult, both well below the ICNIRP basic restriction of 0.08 W/kg for the general public.
