Grigoriev YG et al · 2010
Russian researchers replicated Soviet-era studies by exposing rats to 2450 MHz radiofrequency radiation (WiFi frequency) at low power levels for 30 days. The study confirmed earlier findings showing the radiation triggered autoimmune responses in brain tissue and that blood from exposed rats negatively affected pregnancy outcomes when injected into unexposed pregnant rats.
Joseph W, Vermeeren G, Verloock L, Martens L. · 2010
Researchers converted personal electromagnetic field measurements into whole-body specific absorption rates (SAR) for members of the general public. Among the body types compared, the highest SAR values at 950 MHz were found for the 1-year-old child, followed by the 5-year-old child, 10-year-old child, average woman, and average man. All calculated values remained below the basic restriction of 0.08 W/kg for the general public.
Danker-Hopfe H, Dorn H, Bahr A, Anderer P, Sauter C. · 2010
Panagopoulos DJ, Margaritis LH · 2010
Researchers examined whether the bioactivity windows for GSM 900 and 1800 MHz radiation depend on field intensity by measuring reproductive capacity in Drosophila melanogaster. They compared insects exposed at the window distances (30 cm for GSM 900, 20 cm for GSM 1800) to insects exposed closer (8 cm and 5 cm) behind a metal grid that shielded microwave and ELF fields while keeping intensities roughly equal. The decrease in reproductive capacity did not differ significantly between the two exposure groups. The bioactivity window seems to be due to the intensity of radiation-field (10 microW/cm(2), 0.6-0.7 V/m) at those distances.
Unknown authors · 2010
Researchers exposed H. pylori ATCC 43629 cultures and 2-day-old biofilm to ELF-EMF at 50 Hz and 1 mT for 2 days. Exposed cultures and sham-exposed controls were studied for cell viability, morphology, biofilm mass, genotypic profile, and luxS and amiA gene expression. During biofilm formation, ELF-EMF exposure significantly increased spiral forms to 58.41% versus 33.14% in controls and reduced biofilm cell mass. On mature biofilm, no significant differences were found compared to controls, though biofilm mass was also reduced. No changes in DNA patterns were recorded, but amiA gene expression was modulated.
Luukkonen J, Juutilainen J, Naarala J. · 2010
Researchers aimed to investigate cooperative effects of 872 MHz RF radiation and ferrous chloride on ROS production and DNA damage in human neuroblastoma SH-SY5Y cells. They exposed the cells to 872 MHz RF radiation at 5 W/kg SAR using continuous wave or GSM-like modulated signals for 1 hour in ROS experiments and 3 hours in comet assay experiments. Chemical treatments with ferrous chloride produced statistically significant responses, but RF radiation alone or combined with chemicals did not affect ROS production, DNA damage, or cell viability.
Unknown authors · 2010
Researchers conducted a meta-analysis of nine studies that met minimum design criteria, all using 50 Hz magnetic field exposure. Small but significant effect sizes were found in two cognitive dimensions: exposed subjects performed better on the hard level of visual duration discrimination but worse on the intermediate level. A significant improvement in correct responses was also observed in the flexibility dimension under exposure. However, the authors caution that the small number of studies per dimension makes the estimates unstable and the findings must be treated with extreme caution. Overall, the meta-analysis provides little evidence that ELF-MFs have any effects on cognitive functions.
Unknown authors · 2010
Researchers analyzed 17 studies on how 50 Hz magnetic fields (from power lines and appliances) affect thinking abilities like memory and attention. They found minimal effects - people performed slightly better on some visual tasks but slightly worse on others. Overall, the evidence shows little impact on cognitive function.
Hao Y, Yang X, Chen C, Yuan-Wang, Wang X, Li M, Yu Z · 2010
Researchers exposed murine N9 microglial cells to 2.45 GHz electromagnetic fields and examined several molecular markers of cell activation. After exposure, a significant increase of STAT3 DNA-binding ability was noted, and EMF rapidly induced phosphorylation of STAT3 and activated JAK1 and JAK2. Transcription levels of the inflammation-associated genes iNOS and TNF-alpha also increased after EMF exposure. When a JAK inhibitor called P6 was applied, it reduced induction of iNOS and TNF-alpha, nuclear factor binding activity, and activation of STAT3 in EMF-stimulated microglia.
Ravera S et al. · 2010
Researchers investigated how extremely low frequency magnetic fields affect acetylcholinesterase (AChE) activity in synaptosomal membranes from the cerebellum. Sinusoidal 50 Hz fields at different amplitudes caused AChE activity to decrease about 27%, with a threshold of about 0.74 mT. The decrease was completely reversible and independent of the time spent in the field. When the synaptosomal membranes were solubilized with Triton, the fields did not affect AChE activity, suggesting the membrane plays a crucial role in the effect.
Ravera S et al. · 2010
Researchers exposed brain tissue to 50 Hz magnetic fields (power line frequency) and found it reduced activity of a key brain enzyme by 27%. This enzyme controls nerve communication for memory and learning, suggesting power-frequency fields can disrupt basic brain chemistry.
Findlay RP, Dimbylow PJ. · 2010
Researchers calculated specific energy absorption rate (SAR) values in a 10-year-old sitting voxel model from exposure to electromagnetic fields at 2.4 and 5 GHz, frequencies commonly used by Wi-Fi devices. Both plane-wave exposure and irradiation from antennas in the near field were investigated for a variety of exposure conditions. In all situations studied, the calculated SAR values were considerably below basic restrictions.
Hao Y, Yang X, Chen C, Yuan-Wang, Wang X, Li M, Yu Z. · 2010
Researchers exposed brain immune cells called microglia to 2.45 GHz electromagnetic fields (the same frequency used in WiFi and microwaves) and found that this radiation activated inflammatory pathways in the cells. The EMF exposure triggered specific molecular changes that led to increased production of inflammatory proteins and nitric oxide. This matters because activated microglia contribute to brain inflammation, which is linked to neurological problems and brain diseases.
Rağbetli MC et al. · 2010
Researchers investigated the effect of mobile phone exposure on Purkinje and granule neurons in the developing cerebellum. Pregnant Swiss albino mice were exposed to GSM mobile phone radiation at 890–915 MHz at 0.95 W/Kg specific absorption rate (SAR). The study found a significant decrease in the number of Purkinje cells and a tendency for granule cells to increase.
Rağbetlı MC et al. · 2010
Researchers exposed pregnant mice to mobile phone radiation at levels similar to what humans experience (0.95 W/kg SAR) and found a significant decrease in Purkinje cells in the developing cerebellum of offspring. Purkinje cells are critical neurons that control movement, balance, and coordination. This study suggests that prenatal exposure to mobile phone radiation may affect brain development in areas responsible for motor function.
Hirose H et al. · 2010
Researchers exposed primary microglial cell cultures from neonatal rats to 1950 MHz W-CDMA RF fields at SARs of 0.2, 0.8, and 2.0 W/kg for 2 hours. The percentage of MHC class II positive cells, a marker of microglial activation, was similar between exposed and sham-exposed groups. No statistically significant differences were observed in MHC class II positive cells across any RF exposure group compared to sham controls. Cytokine production of TNF-α, IL-1β, and IL-6 also showed no remarkable differences between exposed and sham groups.
Hirose H et al. · 2010
Japanese researchers exposed rat brain immune cells called microglia to 1950 MHz cell phone radiation for 2 hours at various power levels, then monitored the cells for signs of activation or inflammation. They found no significant differences between exposed and unexposed cells in terms of immune markers or inflammatory proteins. This suggests that short-term exposure to 3G cell phone frequencies at typical power levels does not trigger immune responses in brain cells.
Imge EB, Kiliçoğlu B, Devrim E, Cetin R, Durak I · 2010
Forty female rats were divided into four groups: control, mobile phone, mobile phone plus vitamin C, and vitamin C alone. The mobile phone groups were exposed to a mobile phone signal (900 MHz), and vitamin C was administered orally for four weeks. Mobile phone exposure caused an inhibition in 5'-NT and CAT activities compared to the control group, while GSH-Px activity and MDA levels were reduced but not significantly. The researchers suggested that vitamin C may play a protective role against detrimental effects of mobile phone radiation in brain tissue.
Imge EB, Kiliçoğlu B, Devrim E, Cetin R, Durak I. · 2010
Researchers exposed rats to 900 MHz cell phone radiation and found it disrupted protective brain enzymes. When rats also received vitamin C, the antioxidant helped restore some enzyme function. This suggests phone radiation creates harmful oxidative stress in brain tissue that antioxidants might help counteract.
Nylund R, Kuster N, Leszczynski D · 2010
Researchers exposed primary human umbilical vein endothelial cells and primary human brain microvascular endothelial cells to 1800 MHz GSM radiation for one hour at an average specific absorption rate of 2.0 W/kg. Protein expression patterns were examined immediately after exposure using two dimensional difference gel electrophoresis-based proteomics (2DE-DIGE). Exposure did not cause any statistically significant changes in protein expression in either cell type.
Kwon MS et al. · 2010
Auditory event-related potentials including P1, N2, mismatch negativity, and P3a were recorded from 17 children aged 11–12 years using the multi-feature paradigm. During recording, an ordinary GSM mobile phone emitting 902 MHz pulsed at 217 Hz was placed on the ear over the left or right temporal area with SAR1g = 1.14 W/kg and SAR10g = 0.82 W/kg. The short exposure of two 6 min blocks per side had no statistically significant effects on the neural change-detection profile measured with MMN. The study only had sufficient statistical power to detect a large effect size.
Kwon MS et al. · 2010
Researchers tested whether cell phone radiation affects children's brain processing of sounds by placing GSM phones emitting 902 MHz signals next to 17 children's heads for 12 minutes while measuring brain activity. They found no statistically significant changes in the children's auditory processing abilities during exposure. However, the study was only large enough to detect major effects, meaning smaller impacts could have been missed.
Unknown authors · 2010
Researchers exposed 60 sensitive and 60 non-sensitive users to three 50-minute conditions: a signal with a 16 Hz component, a continuous wave signal at 385.25 MHz, and a sham condition, in a randomised double-blind design. Exposure to the continuous wave signal increased headache in all participants, fatigue in non-sensitive participants, and difficulty concentrating in sensitive participants, while reducing itching in sensitive participants. These effects were not seen with the 16 Hz pulsing signal except for concentration difficulties.
Unknown authors · 2010
Researchers exposed wild-type and DNA-repair-deficient Saccharomyces cerevisiae strains to a 2.45 mT, 50 Hz sinusoidal magnetic field for 96 hours. Growth increased significantly in the rad52 strain and nearly significantly in the rad52 hdf1 strain. Survival was lower in all magnetic-field-exposed strains compared with controls, with the overall difference close to statistical significance. Cell cycle progression and DNA patterns were unchanged in all strains after exposure.
Kwon MS, Jääskeläinen SK, Toivo T, Hämäläinen H. · 2010
Researchers investigated the effects of a GSM mobile phone electromagnetic field on brainstem auditory processing. Auditory brainstem responses were recorded in 17 healthy young adults at baseline without a phone and then with a phone on the ear under EMF-off and EMF-on conditions. ABR waveforms showed no significant differences due to exposure.
