Bourthoumieu S et al. · 2011
Researchers investigated the potential induction of genomic instability by GSM-900 MHz radiofrequency radiation in human amniotic cells exposed for 24 h to average-specific absorption rates (SAR) of 0.25, 1, 2 and 4 W/kg. The rate of aneuploidy of chromosomes 11 and 17 was determined by interphase FISH immediately after independent exposure of three different donors for 24 h. No significant change in the rate of aneuploidy of chromosomes 11 and 17 was found at average SAR up to 4 W/kg.
Unknown authors · 2011
Cammaerts MC, Debeir O, Cammaerts R. · 2011
Researchers examined Paramecium caudatum under normal conditions and near a switched-on GSM telephone operating at 900 MHz and 2 Watts. Exposed individuals moved more slowly and more sinuously than unexposed ones. Their physiology was affected: they became broader, their cytopharynx appeared broader, pulse vesicles had difficulty expelling content, cilia moved less efficiently, and trichocysts became more visible.
Liu ML, Wen JQ, Fan YB. · 2011
Researchers investigated whether green tea polyphenols could protect cultured rat cortical neurons from injury caused by 1800 MHz electromagnetic field exposure from a mobile phone. Mobile phone irradiation for 24 hours induced marked neuronal cell death, as measured by MTT and TUNEL assays. Green tea polyphenols significantly inhibited the radiation-induced increases in active Bax, while total Bax levels showed no marked changes.
Liu ML, Wen JQ, Fan YB. · 2011
Researchers exposed rat brain cells to 1800 MHz cell phone radiation for 24 hours and found it caused significant brain cell death. However, when they treated the cells with green tea polyphenols (antioxidant compounds found in green tea), the protective compounds significantly reduced the radiation-induced brain cell damage. This suggests that certain natural antioxidants might help protect brain cells from the harmful effects of cell phone radiation.
Unknown authors · 2011
Researchers exposed two Escherichia coli model systems to sinusoidal (SiMF) or pulsed-square wave (PMF) magnetic fields of various frequencies (20, 50, 75 Hz) and for different exposure times (15 and 90 min). Transposition of both mini-Tn10 and Tn5 decreased under SiMF and increased under PMF compared to sham exposure control. No significant difference was found between frequencies and between exposure times.
Kaprana AE et al. · 2011
Researchers exposed rabbits to cell phone radiation (GSM-900) and measured how it affected their hearing pathway using auditory brainstem response tests. They found that the radiation caused statistically significant delays in nerve signal transmission through the hearing system, with effects appearing as early as 15 minutes of exposure. The changes returned to normal 24 hours after exposure ended, suggesting the auditory system responds to cell phone radiation as a biological stressor.
Lukac N et al. · 2011
Researchers exposed bovine semen to 1800 MHz GSM-like RF-EMW in vitro and measured motility at 0, 30, 120, and 420 minutes using a computer-assisted semen analyzer. The percentage of motile and progressively motile sperm decreased significantly after 120 and 420 minutes of exposure. Average path distance decreased after 30 and 420 minutes, while path velocity initially increased at 30 minutes but decreased at 420 minutes. Amplitude of lateral head displacement also decreased significantly after 420 minutes.
Rufo MM, Paniagua JM, Jiménez A, Antolín A · 2011
Researchers measured radiofrequency total power densities and power density spectra in 35 towns in Extremadura, Spain. The spectra were taken with three antennas covering frequencies from 100 kHz to 2.2 GHz. Results showed power density levels below reference level guidelines for human exposure and differing across frequency ranges and town size categories.
Unknown authors · 2011
In part B, mice were transplanted intraperitoneally with ascites (Ehrlich-Lettre ascites, strain E) carcinoma cells and then exposed to 112 MHz amplitude-modulated radiation at 16 Hz and 2.45 GHz radiation separately for 14 days. No tumor development occurred in mice exposed to radiofrequency or microwave radiation after a single topical dose of DMBA. Mice transplanted with Ehrlich-Lettre ascites carcinoma cells and exposed to the fields showed a slight but insignificant increase in cell numbers compared to controls.
Patruno A et al. · 2011
The study estimated kinetic constants of catalase, cytochrome P450, and inducible nitric oxide synthase in human HaCaT and THP-1 cell lines exposed to ELF-EMF. To evaluate cellular responses to an inflammatory stimulus, both cell lines were treated with lipopolysaccharide. The effects of ELF-EMF depend upon frequency, amplitude, and length of exposure, and are also related to intrinsic susceptibility and responsiveness of different cell types.
Unknown authors · 2011
Over eight years, the VINČA Institute performed spot broadband measurements of ELF and RF fields in over 35 Serbian municipalities. The study was motivated by public requests for information about exposure levels in living spaces. Measured values in households under overhead power lines were far below the recommended safe levels.
Unknown authors · 2011
Researchers measured electromagnetic field levels in 213 bedrooms over three years (2006-2009) to track exposure trends. They found power line electric and magnetic fields decreased slightly, but radiofrequency radiation from cell towers and WiFi increased by 44%. This reflects our rapidly expanding wireless infrastructure directly impacting home environments.
Unknown authors · 2011
Serbian researchers measured extremely low frequency (ELF) magnetic fields at 50 Hz in households located near overhead power lines across 35 municipalities over eight years. All measured values fell far below international safety guidelines established by ICNIRP. The study aimed to address public concerns about EMF exposure levels in residential areas near power infrastructure.
Unknown authors · 2011
Researchers analyzed singleton live births and stillbirths in metropolitan areas of Québec from 1998 to 2007, calculating residential distance to power transmission lines. They used generalized estimating equations to compute odds ratios for stillbirth across distance categories, accounting for individual and area factors. No association was found between distance and preterm stillbirth. Term stillbirth odds were higher for residences within 25 meters compared to 100 meters or more (OR 2.25, 95% CI 1.14 to 4.45), but no dose-response pattern appeared.
Unknown authors · 2011
Researchers exposed rats to ELF-MF at 60 Hz and 0.1 mT for durations of 24 hours and 1 or 2 weeks. Exposure altered the distribution and occurrence of gastrin, ghrelin, and somatostatin-positive endocrine cells in the stomach. Hormone secretion into blood did not change significantly with ELF-MF exposure. ELF-MF exposure for 1 and 2 weeks increased the BaSO4 suspension propelling ratio, indicating effects on gastrointestinal motility.
Lahijani MS, Bigdeli MR, Kalantary S. · 2011
Researchers investigated the effects of sinusoidal electromagnetic fields on the brain histopathology and structures of preincubated white leghorn chicken embryos. Three hundred fertilized eggs were divided into experimental, control, and sham groups, with the experimental eggs exposed to three different field intensities of 1.33, 2.66, and 7.32 mT for 24 hours before incubation. The results suggested that the electromagnetic fields induce brain damages at different levels.
Lahijani MS, Bigdeli MR, Kalantary S. · 2011
Researchers exposed chicken embryos to magnetic fields similar to power lines before incubation and studied their brain development for 14 days. The exposed embryos showed significant brain damage including increased cell death and tissue breakdown compared to unexposed controls. This suggests that magnetic field exposure during critical development periods can harm the developing nervous system.
Deltour I et al. · 2011
Researchers analyzed the three-dimensional SAR distribution in phantom models to detect clusters of phones, summarizing each phone by a half-ellipsoid above half the maximum SAR and using Partitioning Around Medoids with ellipsoid overlap and Manhattan distance. Weak clustering was found for handset shape (bar phone, flip with top and flip with central antennas) but only in specific positions (tilt or cheek) within the 800 MHz band and partly in 900 and 1800 MHz bands. On 120 phones, the three-dimensional SAR distribution did not appear related to external phone characteristics or measurement characteristics that could refine exposure assessment in epidemiological studies such as Interphone.
Unknown authors · 2011
Researchers examined the effects of 50-Hz magnetic fields at flux densities relevant to environmental exposures on action potential, after-hyperpolarization potential, and neuronal excitability in land snail neurons. Exposure at various flux densities produced marked changes in neuronal excitability, AP firing frequency, and AHP amplitude.
Unknown authors · 2011
The study found no effect on the hematopoietic system in rats exposed to 900 MHz CW RF at 2 W/kg SAR. The exposure level was the ICNIRP public exposure limit for localized SAR.
Unknown authors · 2011
Researchers exposed rats to 900 MHz radiofrequency radiation at 2 W/kg (the ICNIRP public exposure limit) and found no effects on their blood-forming system. This frequency is close to cell phone radiation, and the exposure level matches international safety guidelines. The study suggests that RF exposure at current regulatory limits may not harm blood cell production.
Verschaeve L et al · 2011
Researchers performed a genotoxicity investigation of extremely low-frequency magnetic fields at 50 Hz, 100 and 500 µT, for 1 and 2 hours exposure, alone and with chemical mutagens using the VITOTOX test. The study showed that ELF magnetic fields do not induce SOS-based mutagenicity in S. typhimurium and do not show any synergetic effect when combined with chemical mutagens.
Unknown authors · 2011
Researchers exposed rats to 900 MHz radiofrequency radiation at 2 W/kg (the safety limit for public exposure) and found no effects on their blood-forming system. The study examined whether cell phone frequency radiation at regulatory limits harms the production of blood cells. Results showed the hematopoietic system remained normal under these exposure conditions.
Unknown authors · 2011
Researchers tested whether 50 Hz magnetic fields (the type from power lines and appliances) could damage DNA in bacteria using a highly sensitive test called VITOTOX. They found no genetic damage from the magnetic fields alone or when combined with known chemical mutagens, suggesting these specific EMF exposures don't cause mutations in this bacterial system.
