Danese E et al. · 2017
Researchers exposed blood samples from 14 healthy volunteers to 900 MHz radiofrequency from a commercial mobile phone for 30 minutes. A control sample was kept away from radiofrequency sources. DNA integrity was measured by analyzing γ-H2AX foci in lymphocytes using immunofluorescence staining. No measure of γ-H2AX foci was significantly influenced by the exposure, and the odds ratio for genetic damage ranged from 0.27 to 1.00.
Choi KH et al. · 2017
Andrianome S et al. · 2017
Researchers compared autonomic nervous system activity in 30 self-declared electrohypersensitive participants and 25 matched controls using heart rate variability and skin conductance. The electrohypersensitive group showed more skin conductance responses to auditory stimuli, while short-term heart rate variability did not differ between groups. In a double-blind, counterbalanced session, 10 electrohypersensitive volunteers were exposed to GSM 900, GSM 1800, DECT, and Wi-Fi at 1 V/m. No changes in heart rate variability or skin conductance were observed during or after exposure.
Villarini M et al. · 2017
Researchers exposed SH-SY5Y5 and SK-N-BE-2 neuroblastoma cells to 50 Hz magnetic fields at 0.01, 0.1, or 1 mT, aluminum chloride at 4 or 40 µM, or both together for 1 hour continuously or 5 hours intermittently. They measured DNA damage with the comet assay, redox status via GSH/GSSG ratio, and Hsp70 expression by western blot and real-time RT-PCR. Neither the magnetic field nor aluminum alone caused DNA damage, altered the GSH/GSSG ratio, or changed Hsp70 levels, and combined exposure showed no synergistic toxic effect.
Zhang J, Sumich A, Wang GY. · 2017
The review focuses on recent neuroimaging and electroencephalography studies to analyze effects of MP EMF exposure on neurocognitive function. Several studies indicate an increase in cortical excitability and/or efficiency with EMF exposure, more prominent in fronto-temporal regions and associated with faster reaction time. Cortical excitability might also underpin disruption to sleep. However, several inconsistent findings exist and conclusions regarding adverse effects of EMF exposure are currently limited.
Yilmaz A et al. · 2017
Pregnant rats were exposed to 900 MHz EMF for 24 hours a day over 20 days using a digital signal generator placed under the cage. Livers and blood were collected from male and female offspring 60 days after birth for biochemical and histopathological analysis. Liver malondialdehyde levels increased significantly while glutathione levels decreased significantly, and serum ALT and AST levels were significantly elevated. Liver sections showed intense hepatocyte degeneration with cytoplasmic eosinophilic structures, pyknotic nuclei, and fibrosis. The researchers concluded that intrauterine EMF exposure causes harmful liver effects that persist into adulthood.
Yang M et al. · 2017
Researchers conducted a systematic review and meta-analysis of 11 studies with 6028 cases and 11488 controls to investigate mobile phone use and glioma risk. Long-term mobile phone use of at least 10 years showed a significant positive association with glioma (OR = 1.44, 95% CI = 1.08-1.91). Long-term ipsilateral use was also associated with glioma (OR = 1.46, 95% CI = 1.12-1.92), while contralateral use was not associated regardless of duration. Long-term use was associated with 2.22 times greater odds of low-grade glioma (OR = 2.22, 95% CI = 1.69-2.92), but mobile phone use of any duration was not associated with high-grade glioma (OR = 0.81, 95% CI = 0.72-0.92).
Wang J, Su H, Xie W, Yu S. · 2017
Researchers performed a systematic review and meta-analysis of 7 cross-sectional studies on MP use and headache. The pooled analysis found a 38% increased risk of headache in MP users versus non-MP users. Among MP users, longer daily call duration and higher daily call frequency were each associated with greater headache risk.
Taheri M et al. · 2017
Researchers assessed whether 900 MHz GSM mobile phone radiation and 2.4 GHz Wi-Fi router radiation alter the susceptibility of microorganisms to different antibiotics. The study found that exposure to Wi-Fi and RF simulator radiation can significantly alter inhibition zone diameters and growth rates for Listeria monocytogenes and Escherichia coli. Pure cultures of Listeria monocytogenes and Escherichia coli were exposed to RF-EMFs from a GSM 900 MHz mobile phone simulator and a 2.4 GHz Wi-Fi router.
Sepehrimanesh M, Kazemipour N, Saeb M, Nazifi S, Davis DL · 2017
Researchers exposed 20 Sprague-Dawley rats to 900 MHz RF-EMF for 0, 1, 2, or 4 hours per day for 30 consecutive days. After 4 hours of daily exposure, ATP synthase beta subunit and hypoxia up-regulated protein 1 precursor were significantly up-regulated. The authors state that these protein increases are related to carcinogenic risk and reproductive damage.
Sato Y, Kojimahara N, Taki M, Yamaguchi N · 2017
The study aimed to clarify the distribution of ear side of mobile phone use in Japan and factors associated with it. Statistically significant differences were observed only in talk time per call with an odds ratio of 2.17 and a 95% confidence interval of 1.22 to 3.99. In right-handed adults, left-ear use was significantly associated with age groups 30-39 (OR = 2.55; 95% CI: 1.79-3.68), 40-49 (OR = 3.08; 95% CI: 2.15-4.43), over 50 (OR = 1.85; 95% CI: 1.20-2.85), and with work-related talk time of 51-100% (OR = 1.75; 95% CI: 1.21-2.55). The survey included 2,518 children and 1,529 adults who completed an Internet-based survey, and data were analyzed by logistic regression. In children, the analysis focused on right-ear use in right-handed individuals due to dominant-hand tendency.
Qureshi ST, Memon SA, Abassi AR, Sial MA, Bughio FA. · 2017
Researchers exposed dry chickpea seeds to GSM cell phone radiation at 900 MHz and laptop radiation at 3.31 GHz for 24 and 48 hours. Untreated seeds served as a negative control and gamma rays at 250 Gray served as a positive control. All radiofrequency treatments inhibited seed germination, with the 48-hour laptop exposure showing the strongest negative effect. Mitotic index decreased and abnormality index increased as exposure duration and frequency increased. Cell membrane damage, nuclear membrane damage, and ghost cells were observed only after 48 hours of exposure.
Martens AL et al. · 2017
Mokarram P, Sheikhi M, Mortazavi SMJ, Saeb S4 Shokrpour N · 2017
Exposure to RF radiation altered the ERα gene methylation pattern compared to non-exposed controls. A subsequent gamma-ray challenge dose did not induce an adaptive response in ERα methylation. The study concluded that GSM mobile phone RF radiation can lead to epigenetic detrimental changes in ERα promoter methylation.
Lu X, Oda M, Ohba T, Mitsubuchi H, Masuda S, Katoh T. · 2017
The study aimed to determine the associations of excessive mobile phone use with neonatal birth weight and infant health status. A sample of 461 mother and child pairs participated in a survey on maternal characteristics, infant characteristics, and maternal mobile phone usage information during pregnancy. The mean infant birth weight was lower in the excessive use group than in the ordinary use group, and the frequency of infant emergency transport was significantly higher in the excessive use group than in the ordinary use group.
Lippi G et al. · 2017
Researchers collected two sequential citrated blood samples from 16 healthy volunteers and exposed one sample to a smartphone call for 30 minutes at 900 MHz. Exposure significantly prolonged collagen-epinephrine aggregation by a median of 10% and increased mean platelet volume by a median of 5%. Collagen-adenosine diphosphate aggregation and platelet count did not change.
Lian HY, Lin KW, Yang C, Cai P. · 2017
Researchers exposed two budding yeast strains, NT64C and SB34, to 2.0 GHz RF-EMF and 50 Hz ELF-EMF. Both RF-EMF and ELF-EMF exposure elevated the de novo generation and propagation of the yeast prion [URE3] in the two strains. The increase grew over time, and ELF-EMF showed a dose-dependent effect. Chaperone transcription and expression (Hsp104, Hsp70-Ssa1/2, Hsp40-Ydj1) did not change significantly after exposure. ROS levels and SOD and CAT activities rose after short-term exposure but not after long-term exposure.
Lee AK, Hong SE, Kwon JH, Choi HD, Cardis E. · 2017
Researchers calculated specific absorption rate for four anatomical head models at different ages using 11 numerical phone models of different shapes and antenna configurations. The 11 models represented phone types accounting for around 86% of the approximately 1400 commercial phone models released into the Korean market since 2002. Seven of the phone models selected had an internal dual-band antenna and the remaining four had an external antenna. The 1 g peak spatial SAR and ipsilateral and contralateral brain-averaged SARs were reported for all 11 phone models, and the effects of phone type, phone position, operating frequency, and age of head models on brain SAR were comprehensively determined.
Kamali K et al. · 2017
Researchers collected 40 semen samples from healthy men and divided them into exposed and unexposed groups. The exposed group was placed in an incubator with a 3G+Wi-Fi modem downloading data for 50 minutes, while the unexposed group was shielded with aluminum foil. Sperm motility class C was significantly lower in the exposed group, while class D was significantly higher. Several velocity parameters were significantly higher in the unexposed group. The authors concluded that electromagnetic waves from 3G+Wi-Fi modems significantly decrease sperm motility and velocity.
Ibitayo AO et al. · 2017
Researchers divided young male rats into four groups, with three groups exposed to 2.5 Ghz radiation for 30, 45, or 60 consecutive days. DNA damage was detected using agarose gel electrophoresis, and histomorphometry showed perivascular congestion and tissue damage.
Hardell L, Carlberg M. · 2017
Researchers analyzed brain tumor rates in the Swedish National Inpatient Register and Swedish Cancer Register from 1998 to 2015. The average annual percentage change for brain tumors increased by 2.06% per 100,000 in both genders combined. A joinpoint in 2007 showed a shift from a 0.16% annual change before 2007 to a 4.24% annual change after 2007. The highest increase was in the 20-39 year age group. The authors concluded that underreporting to the Cancer Register means real incidence is higher and trends should be used with caution.
Halgamuge MN. · 2017
The analysis found that 89.9% of studies reported physiological or morphological effects from mobile phone RF-EMF (p < 0.001). Maize, roselle, pea, fenugreek, duckweeds, tomato, onions, and mungbean appeared especially sensitive to RF-EMF.
Gkonis F, Boursianis A, Samaras T. · 2017
Researchers investigated changes in electromagnetic field exposure from television signals due to the digital switchover in Thessaloniki, Greece. Measured electric fields complied with ICNIRP guidelines but were higher than those reported in other countries. The authors noted that the higher values may be attributed to the selection of measurement points. The median power density dropped from 60 μW m during analog broadcasting to 13.3 μW m for digital television. The authors concluded that the digital switchover resulted in reduced population exposure to radiofrequency fields in the UHF range.
Eghlidospour M, Ghanbari A, Mortazavi SMJ, Azari H. · 2017
Researchers exposed adult murine neural stem cells to GSM 900-MHz radiofrequency radiation from a mobile phone for varying durations. They used neurosphere assays to evaluate proliferation, immunofluorescence to examine differentiation, and alamarBlue and caspase 3 apoptosis assays to assess harmful effects. Neurosphere number and size and the proportion of cells becoming neurons decreased significantly with longer exposure. Cell viability, apoptosis, and astrocytic differentiation were unchanged.
Durusoy R, Hassoy H, Özkurt A, Karababa AO. · 2017
Headache, fatigue, and sleep disturbances were reported 1.90, 1.78, and 1.53 times more often among mobile phone users. Dose-response relationships were found for call frequency, call duration, text message frequency, phone position at night, and charging while calling with symptoms such as headache, concentration difficulties, fatigue, sleep disturbances, ear warming, and flushing. No association was found between school EMF levels and symptoms, while limited associations were seen for proximity to base stations. Data were collected via questionnaire and EMF measurements from November 2009 to April 2011 using an Aaronia Spectran HF-4060 device.
