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Showing results for: ELF-EMF

Influence of the on-line ELF-EMF stimulation on the electrophysiological properties of the rat hippocampal CA1 neurons in vitro.

Research RF Safe Research Library Jan 1, 2017

This paper describes an on-line ELF magnetic stimulation setup and evaluates coil field distribution using COMSOL simulations alongside physical measurements. The authors report that modeled and measured magnetic flux densities were similar, and that stimulation induced sodium channel currents and fEPSPs in rat…

Rat adipose-derived mesenchymal stem cells aging reduction by zinc sulfate under extremely low frequency electromagnetic field exposure is associated with increased telomerase reverse transcriptase gene expression.

Research RF Safe Research Library Jan 1, 2017

This in vitro study exposed rat adipose-derived mesenchymal stem cells to 50 Hz, 20 mT ELF-EMF for 30 minutes per day over 21 days, with and without zinc sulfate. The authors report ELF-EMF exposure decreased TERT gene expression and increased senescent cells. Zinc sulfate was reported to increase TERT expression and…

Effect of electromagnetic fields and antioxidants on the trace element content of rat teeth.

Research RF Safe Research Library Jan 1, 2017

This animal study examined whether extremely low-frequency electromagnetic fields (ELF-EMFs) from a high-voltage source alter trace element concentrations in rat teeth and whether antioxidants (melatonin and glutathione) modify these changes. Rats were exposed 8 hours/day for 26 or 52 days, with separate sham…

Vitamin C and Vitamin E Protected B and Balb/c-3T3 Cells from Apoptosis Induced by Intermittent 50Hz ELF-EMF Radiation.

Research RF Safe Research Library Jan 1, 2017

This in vitro study exposed B cells and Balb/c-3T3 cells to intermittent 50 Hz power-line ELF-EMF and assessed apoptosis. The authors report that preincubation with vitamin C or vitamin E reduced apoptosis compared with the exposed group. They conclude that vitamins C and E have protective effects, with stronger…

Extremely low frequency electromagnetic field (ELF-EMF) reduces oxidative stress and improves functional and psychological status in ischemic stroke patients.

Research RF Safe Research Library Jan 1, 2017

This clinical study evaluated whether adding ELF-EMF exposure to a 4-week rehabilitation program affects antioxidant and clinical status in ischemic stroke patients. Fifty-seven patients were assigned to an ELF-EMF group or a non-ELF-EMF group, with the exposed group receiving 40 Hz, 7 mT for 15 minutes per day over…

Alterations of Immune Parameters on Trichoplusia ni (Lepidoptera: Noctuidae) Larvae Exposed to Extremely Low-Frequency Electromagnetic Fields.

Research RF Safe Research Library Jan 1, 2017

This animal study exposed Trichoplusia ni larvae to 60 Hz, 2.0 mT ELF-EMF for 24, 48, or 72 hours and assessed immune parameters and fertility. The abstract reports no effect on life cycle and fertility after 24 hours, but several immune-related measures changed after 48–72 hours, including reduced hemolymph protein…

Quantum mechanical model for the anticarcinogenic effect of extremely-low-frequency electromagnetic fields on early chemical hepatocarcinogenesis.

Research RF Safe Research Library Jan 1, 2017

This study develops a quantum-mechanical radical pair mechanism model to examine how an extremely-low-frequency electromagnetic field (ELF-EMF) might influence early chemical hepatocarcinogenesis in rats. The model evaluates singlet-state recombination and quantum yield under a low magnetic field effect, proposing…

Effects of extremely low-frequency electromagnetic fields (ELF-EMF) exposure on B6C3F1 mice

Research RF Safe Research Library May 5, 2015

This long-term animal study exposed mice to a 50 Hz magnetic field (500 mG) prenatally and then through 15.5 months of life to assess tumor-related outcomes and fertility-related measures. Exposed mice had lower body weights and showed no increase in liver or lung tumor incidence. However, exposed female mice had a…

A cross-sectional study on oxidative stress in workers exposed to extremely low frequency electromagnetic fields

Research RF Safe Research Library Jan 1, 2015

This cross-sectional study compared oxidative stress and genotoxicity biomarkers between 310 ELF-EMF-exposed inspection workers and 300 logistical staff controls. The authors report no statistically significant differences in antioxidant-related measures (T-AOC, GPx, SOD) or MDA, and no significant differences in…

The effects of different intensities, frequencies and exposure times of extremely low-frequency electromagnetic fields on the growth of Staphylococcus aureus and Escherichia coli O157:H7.

Research RF Safe Research Library Jan 1, 2015

This in vitro study examined whether extremely low-frequency electromagnetic fields (ELF-EMF) affect growth of Staphylococcus aureus and Escherichia coli O157:H7. Bacterial cultures were exposed to sinusoidal homogeneous ELF-EMF at 2 or 4 mT, with frequencies of 20, 40, or 50 Hz, for 1–6 hours, and CFU were compared…

Experimental model for ELF-EMF exposure: Concern for human health.

Research RF Safe Research Library Jan 1, 2015

This in vitro study examined whether extremely low frequency EMF exposure alters MCP-1 expression in several human cell lines. Cells were exposed to a 50 Hz sinusoidal field at 1 mT (rms), and the authors report that MCP-1 expression was modified in a cell-type-dependent manner. The findings are described as…

Melatonin protects rat cerebellar granule cells against electromagnetic field-induced increases in Na(+) currents through intracellular Ca(2+) release

Research RF Safe Research Library Jan 1, 2014

This in vitro study examined extremely low-frequency electromagnetic field (ELF-EMF) effects on voltage-gated sodium (Nav) currents in rat cerebellar granule cells and whether melatonin modifies these effects. The abstract reports that 60 minutes of ELF-EMF exposure increased Nav current density, and that melatonin…

Assessment of the neurotoxic potential of exposure to 50Hz extremely low frequency electromagnetic fields (ELF-EMF) in naïve and chemically stressed PC12 cells

Research RF Safe Research Library Jan 1, 2014

This in vitro study tested acute (30 min) and sub-chronic (48 h) 50 Hz ELF-EMF exposure up to 1000 µT in naïve and chemically stressed PC12 cells. Across assays of Ca2+ homeostasis, ROS production, and membrane integrity, the study reports no consistent or measurable neurotoxic effects under the tested conditions.…

No effects of power line frequency extremely low frequency electromagnetic field exposure on selected neurobehavior tests of workers inspecting transformers and distribution line stations versus controls

Research RF Safe Research Library Jan 1, 2014

This study evaluated whether occupational 50 Hz ELF-EMF exposure near transformers and distribution power lines affects performance on several computer-based neurobehavior tests. Spot measurements found some electric-field locations above a national occupational standard, while all magnetic-field spots were below the…

Effect of ELF-EMF Exposure on Human Neuroblastoma Cell Line: a Proteomics Analysis

Research RF Safe Research Library Jan 1, 2014

This in vitro study exposed SH-SY5Y human neuroblastoma cells to a 2 mT, 50 Hz magnetic field for 3 hours and assessed protein expression using proteomics. The authors report that 189 proteins changed expression in exposed cells compared with controls, with PCA/clustering separating samples by condition. They…

Extremely Low Frequency Electromagnetic Field from Convective Air Warming System on Temperature Selection and Distance.

Research RF Safe Research Library Jan 1, 2014

This study measured extremely low frequency electromagnetic field (ELF-EMF) emitted by a convective air warming (forced air warmer) device at different temperature settings and distances. Reported ELF-EMF levels increased with closer proximity and higher temperature settings, with mean values around 18 mG at 30 cm.…

Exposure to extremely low-frequency electromagnetic fields inhibits T-type calcium channels via AA/LTE4 signaling pathway.

Research RF Safe Research Library Jan 1, 2014

This in vitro study examined 50 Hz ELF-EMF effects on human T-type calcium channels expressed in HEK293 cells and on native T-type channels in primary cultured mouse cortical neurons. The authors report that ELF-EMF (0.2 mT) inhibited Cav3.1, Cav3.2, and Cav3.3 channel activity without changing Cav3.2 expression or…

Effect of Extremely Low Frequency Electromagnetic Field and GABAA Receptors on Serum Testosterone Level of Male Rats.

Research RF Safe Research Library Jan 1, 2013

This animal experiment tested whether extremely low frequency electromagnetic field (ELF-EMF) exposure interacts with GABAA receptor modulation to affect serum testosterone in male rats. Rats were exposed for 30 days (8 hours/day) or sham exposed, then given saline, a GABAA antagonist (bicuculline), or a GABAA…

Effect of puerarin on matrix metalloproteinase-2 in human fetal scleral fibroblasts treated with low frequency electromagnetic fields.

Research RF Safe Research Library Jan 1, 2013

This in vitro study examined whether extremely low frequency electromagnetic field (ELF-EMF) exposure alters MMP-2 expression in cultured human fetal scleral fibroblasts and whether puerarin modifies this response. The authors report increased MMP-2 mRNA and protein expression after 0.2 mT ELF-EMF exposure for 24…

Effect of extremely low frequency electromagnetic field exposure on sleep quality in high voltage substations.

Research RF Safe Research Library Jan 1, 2012

This case-control study measured electric field intensity and magnetic flux density in high voltage substations and estimated workers' ELF-EMF exposure over a shift. Sleep quality was assessed using the PSQI in 67 exposed workers and 110 controls. The study reports no statistically significant difference in overall…

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