Unknown authors · 2010
The study analyzed live singleton births in Montréal and Québec from 1990 to 2004 using the Québec birth file. Proximity was defined as residing within 400 meters of a transmission line, and generalized estimating equations assessed associations with preterm birth, low birth weight, small-for-gestational-age birth, and infant sex while adjusting for maternal and neighborhood factors. No association was found for preterm birth, low birth weight, or infant sex, but a lower likelihood of small-for-gestational-age birth appeared for some distance categories such as 50–75 meters compared to 400 meters or more.
Unknown authors · 2010
Researchers compared two methods for measuring radiofrequency exposure safety in the 1-10 GHz range using detailed computer models of adult and child heads. They found that the traditional SAR measurement works better at lower frequencies (1-3 GHz), while incident power density is more appropriate at higher frequencies (6-10 GHz). The study recommends switching measurement methods at 6 GHz to better predict tissue heating.
Unknown authors · 2010
Researchers isolated trophoblasts from first trimester human chorionic villi and exposed them to a 50-Hz magnetic field for different durations. Exposure at 0.2 mT for 72 hours did not affect hCG and progesterone secretion. Exposure at 0.4 mT for 48 hours showed no significant change in hormone secretion. Exposure at 0.4 mT for 72 hours significantly inhibited hCG and progesterone secretion. Apoptosis-related gene expression (bcl-2, bax, caspase-3, p53, fas) did not differ after 72 hours at 0.4 mT.
Unknown authors · 2010
Researchers exposed human placental cells from early pregnancy to 50 Hz magnetic fields (the same frequency as power lines) to see if it affected hormone production and cell death. They found that prolonged exposure at higher intensities reduced production of key pregnancy hormones, but didn't trigger cell death pathways.
Gulturk S et al. · 2010
Rats in the magnetic field groups were exposed to a 5 mT field for 165 minutes every day for 30 days, and all rats underwent Evans blue measurement to evaluate the blood-brain barrier. Diabetes and magnetic field exposure each increased blood-brain barrier permeability, their combination caused a greater increase, and insulin reduced that effect.
Gulturk S et al. · 2010
Scientists exposed diabetic rats to 50 Hz magnetic fields (from power lines) for three hours daily over 30 days. The magnetic fields increased blood-brain barrier permeability, allowing substances to pass more easily into brain tissue. This matters because a compromised barrier can let toxins reach the brain.
Unknown authors · 2010
Unknown authors · 2010
Researchers exposed breast cancer cells to 50 Hz electromagnetic fields at 1.2 microT (similar to power line levels) for 48 hours and found the EMF completely blocked melatonin's protective anti-cancer effects. Melatonin normally helps suppress breast cancer growth, but the electromagnetic field disrupted the cellular pathways that allow this hormone to work properly.
Vermeeren G et al. · 2010
Unknown authors · 2010
Unknown authors · 2010
Italian researchers exposed mice to 50 Hz magnetic fields at 1 milliTesla (power line frequency) for up to 7 days and found DNA damage in all brain regions immediately after exposure. The DNA damage was reversible, healing within 24 hours after exposure ended, and didn't trigger stress protein responses.
Unknown authors · 2010
Researchers exposed female NMRI mice to 50 Hz, 0.5 mT ELF-EMF for 4 hours per day, 6 days a week for 2 weeks. The exposed mice had significantly fewer flushed blastocysts than controls. Fallopian tube epithelial cell height increased significantly in exposed mice, while endometrial epithelial cell height showed an insignificant increase.
Carrubba S, Frilot C 2nd, Chesson AL Jr, Marino AA. · 2010
Researchers tested whether cell phone signals can trigger measurable brain responses by exposing 20 volunteers to the low-frequency pulse pattern (217 Hz) that cell phones emit. They found that 90% of participants showed detectable brain activity changes (called evoked potentials) in response to these pulses, suggesting the brain can sense and respond to cell phone signals even when people aren't consciously aware of it.
Pinto R et al. · 2010
Vorobyov V, Janać B, Pesić V, Prolić Z. · 2010
Researchers studied EEG in 10 freely moving rats with electrodes implanted in the cortex and dorsomedial hypothalamus over five consecutive days. Rats were exposed to ELF-MW (915 MHz, 20-ms pulse duration, approximately 0.3 mW/cm(2), 4 Hz) intermittently (1-min 'On', 1-min 'Off') for 10 min several times per day. Baseline EEG showed dominant activity in the 3.2-6.0 Hz and 17.8-30.5 Hz ranges in the cortex, and in the 6.0-17.8 Hz range in the hypothalamus. ELF-MW exposure increased beta(2) activity in the hypothalamus more than in the cortex, significantly reducing the initial cortical-hypothalamic EEG imbalance. A cumulative effect was observed across repeated exposures.
Unknown authors · 2010
Unknown authors · 2010
Unknown authors · 2010
Researchers exposed mice to 50 Hz magnetic fields (the same frequency as household power lines) for two generations, from conception through adulthood. While most fertility measures remained normal, sperm quality significantly declined - fewer sperm survived and their movement was impaired. This suggests power line frequency EMF may affect male reproductive health even when other fertility markers appear unaffected.
Unknown authors · 2010
The construct was transfected into INER-37 and RMA E7 cell lines, which were then exposed to magnetic fields or thermal shock. In INER-37 cells, both magnetic field and thermal shock exposure increased luciferase activity compared to controls, while magnetic fields had no effect on RMA E7 cells.
Hirata A et al. · 2010
Researchers exposed rabbits to 2.45-GHz microwaves across a range of power densities to study the threshold for behavioral signs of thermal stress. The study found that a core temperature elevation of 1 degrees C was an estimate of the threshold for inducing behavioral signs of microwave-induced thermal stress in rabbits. The whole-body average SAR needed to produce behavioral signs was estimated at approximately 1.3 W/kg.
Unknown authors · 2010
Sun H, Che Y, Liu X, Zhou D, Miao Y, Ma Y. · 2010
Researchers investigated memory impairment in newly hatched chicks following in ovo exposure to a 50-Hz magnetic field of 2 mT for 60 minutes per day on embryonic days 12 through 18. Memory retention was tested at 10, 30, and 120 minutes after exposure to a bitter-tasting bead.
Kumar S, Jain S, Behari J, Avelev VD, Mathur R. · 2010
Researchers exposed rats with spinal cord injuries to extremely low frequency magnetic fields (50 Hz, 17.9 microT) for 2 hours daily over 8 weeks. The magnetic field exposure restored normal food intake, water consumption, and body weight in the paralyzed rats, all of which had decreased after their spinal cord injuries. This suggests that specific magnetic field frequencies might help support basic physiological functions in spinal cord injury patients.
Unknown authors · 2010
The pEMF plasmid was electrotransferred into the quadriceps muscles of BALB/c mice. Mice exposed to the EMFs for 2 hours daily over 7 days showed increased luciferase expression compared with controls (P<0.05).
Unknown authors · 2010
Researchers exposed male Wistar rats from postnatal day 23 to 53 to 50 Hz magnetic fields at 100-300 μT for 4 hours daily, atrazine at 20 or 200 mg/kg body weight, or both combined. Light and electron microscopy showed no significant alterations in thyroid structure in any treated group compared to controls. The magnetic field group showed significant differences in thyroid follicle volume density and connective tissue compared to atrazine and combined groups. High-dose atrazine significantly affected mast cell numbers compared to controls.
