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Filters: tag: In Vitro Study Clear

Modulation of inflammatory response by electromagnetic field in Neuronal and Microglial cells.

Research RF Safe Research Library Jan 1, 2025

This in vitro study examined whether low-frequency electromagnetic field (EMF) stimulation modulates inflammatory signaling in neuronal and microglial cell lines after induction of a pro-inflammatory state with TNF-α. The authors report reduced transcriptional expression of inflammatory target genes at 24 and 48…

Extremely low-frequency electromagnetic field (ELF-EMF) enhances mitochondrial energy production in NARP cybrids.

Research RF Safe Research Library Jan 1, 2025

This in vitro study examined ELF-EMF effects in normal cybrids and NARP cybrids carrying a pathogenic MT-ATP6 mtDNA mutation mixture. ELF-EMF did not alter mtDNA copy number or the wild-type-to-mutant mtDNA ratio, but it increased mtDNA transcription and multiple markers of mitochondrial function in NARP cybrids,…

Heating of metallic orthodontic devices during anti-aging treatment with vacuum and electromagnetic fields: In vitro study.

Research RF Safe Research Library Jan 1, 2024

This in vitro study evaluated heating of metallic orthodontic brackets/wires during an anti-aging treatment combining vacuum and electromagnetic fields (V-EMF). Using 20 resin-mouth setups covered with porcine muscle tissue, both beta-titanium and nickel-titanium wire groups showed about a 1.1°C temperature rise by…

Effects of 2.4 GHz radiofrequency electromagnetic field (RF-EMF) on glioblastoma cells (U -118 MG).

Research RF Safe Research Library Jan 1, 2023

This in vitro study exposed glioblastoma (U-118 MG) and human embryonic kidney (Hek-293) cells to 2.4 GHz RF-EMF for 24–72 hours, with or without a dielectric screen. The authors report a significant decrease in cell viability after exposure in both cell lines. The decrease was described as greater in glioblastoma…

Effects of repeated exposure to 50 Hz electromagnetic field on breast cancer cells.

Research RF Safe Research Library Jan 1, 2022

This in vitro study exposed two human breast cancer cell lines to a 50 Hz ELF-EMF (20 mT) for 3 hours/day for up to four days. The authors report reduced viability and apoptosis-related findings in MDA-MB-231 cells, with no significant viability change in MCF-7 cells. Cell-cycle effects differed by cell line,…

Electromagnetic Fields Generated by the IteraCoil Device Differentiate Mesenchymal Stem Progenitor Cells Into the Osteogenic Lineage.

Research RF Safe Research Library Jan 1, 2022

This in vitro study exposed human adipose-derived mesenchymal stem progenitor cells to an alternating EMF generated by the IteraCoil device at 0.05 and 1 kHz. The authors report that EMF exposure was associated with osteoblastic differentiation in the absence of exogenous pro-osteogenic supplements, assessed by…

Anticancer and antibacterial potentials induced post short-term exposure to electromagnetic field and silver nanoparticles and related pathological and genetic alterations: in vitro study.

Research RF Safe Research Library Jan 1, 2022

This in vitro study evaluated short-term extremely low frequency electromagnetic field (ELF-EMF) exposure and silver nanoparticles (AgNPs), alone and combined, for antibacterial effects and apoptosis induction in MCF-7 breast cancer cells. The authors report time-dependent reductions in bacterial viable counts, with…

Low-frequency electromagnetic field influences human oral mucosa keratinocyte viability in response to lipopolysaccharide or minocycline treatment in cell culture conditions.

Research RF Safe Research Library Jan 1, 2021

This in vitro study examined whether low-frequency electromagnetic field (LF-EMF) exposure affects viability of human oral mucosa keratinocytes. Apoptosis (early/late) and necrosis were measured by flow cytometry, including conditions with lipopolysaccharide (LPS) or minocycline. The authors report that LF-EMF, alone…

Osteoinductivity of polycaprolactone nanofibers grafted functionalized with carboxymethyl chitosan: Synergic effect of β-carotene and electromagnetic field.

Research RF Safe Research Library Jan 1, 2020

This in vitro study developed carboxymethyl chitosan (CMC)-grafted polycaprolactone (PCL) nanofiber scaffolds for bone tissue engineering. It reports mineralization and osteonectin expression in adipose mesenchymal stem cells cultured on the scaffolds, suggesting osteoinductive properties of the grafted CMC. The…

Evaluation of effect of high frequency electromagnetic field on growth and antibiotic sensitivity of bacteria.

Research RF Safe Research Library Jan 1, 2018

This in vitro study evaluated whether high-frequency electromagnetic fields at 900 and 1800 MHz affect bacterial DNA, growth, and antibiotic susceptibility after 2 hours of exposure. The authors report no detectable DNA differences between exposed and non-exposed bacteria for the species described. Growth and…

Extremely low frequency variable electromagnetic fields affect cancer and noncancerous cells in vitro differently: Preliminary study.

Research RF Safe Research Library Jan 1, 2018

This in vitro study exposed cancer (U87-MG; 143B) and noncancerous (BJ; HEK) cells to extremely low frequency electromagnetic fields under varying frequencies (2–60 Hz), waveforms, and exposure durations, with sham controls. Cell viability was assessed using an MTT assay. The authors report that cancer and…

Extremely low-frequency electromagnetic fields accelerates wound healing modulating MMP-9 and inflammatory cytokines.

Research RF Safe Research Library Jan 1, 2018

This in vitro study used a scratch wound model in human immortalized keratinocytes (HaCaT) to examine effects of extremely low-frequency electromagnetic fields (ELF-EMF). ELF-EMF exposure was reported to accelerate wound closure compared with sham and to increase inflammatory cytokine expression/release. The authors…

Effects of 1950 MHz radiofrequency electromagnetic fields on Aβ processing in human neuroblastoma and mouse hippocampal neuronal cells.

Research RF Safe Research Library Jan 1, 2018

This in vitro study exposed HT22 mouse hippocampal neuronal cells and SH-SY5Y human neuroblastoma cells to 1950 MHz RF-EMF at SAR 6 W/kg for 2 hours per day over 3 days. RF-EMF exposure reduced mRNA levels of several Aβ-processing genes in HT22 cells, but did not change APP mRNA in SH-SY5Y cells. Protein levels of…

The effect of a high frequency electromagnetic field in the microwave range on red blood cells.

Research RF Safe Research Library Jan 1, 2017

An in vitro study examined red blood cells exposed to an 18 GHz electromagnetic field and assessed uptake of nanospheres. The authors report that EMF exposure enabled nanosphere uptake into RBCs, with different translocation behavior for 23.5 nm versus 46.3 nm particles. Uptake was reported to increase with higher…

Evaluation of the Effect of Radiofrequency Radiation Emitted From Wi-Fi Router and Mobile Phone Simulator on the Antibacterial Susceptibility of Pathogenic Bacteria and .

Research RF Safe Research Library Jan 1, 2017

This in vitro study assessed whether RF-EMF exposure from a GSM 900 MHz mobile phone simulator and a 2.4 GHz Wi-Fi router alters bacterial susceptibility to antibiotics. The authors report significant changes in inhibition zone diameters and bacterial growth rate after exposure. They also describe an exposure window…

Gold Nanocluster-Mediated Cellular Death under Electromagnetic Radiation.

Research RF Safe Research Library Jan 1, 2017

This study investigated 2 nm protein-stabilized gold nanoclusters in six mammalian cell types under 1 GHz electromagnetic field exposure. The authors report low intrinsic toxicity of the nanoclusters, but a significant decrease in cell viability when nanocluster-incubated cells were exposed to the 1 GHz field,…

Disinfection effect of microwave radiation on Bacillus subtilis as indicator organism on contaminated dental stone casts under dry and wet conditions.

Research RF Safe Research Library Jan 1, 2017

This in vitro study evaluated microwave disinfection of dental stone casts contaminated with Bacillus subtilis under wet and dry conditions. After a drying step for the dry group (450 W for 15 minutes), both wet and dry casts were exposed to 900 W for 5 minutes and cultured to quantify CFU/mL. The authors report…

A comparison of the efficacy of mechanical, chemical, and microwave radiation methods in disinfecting complete dentures.

Research RF Safe Research Library Jan 1, 2017

This in vitro study compared microwave irradiation with chemical (2% glutaraldehyde, Corega tablets) and mechanical (brushing) methods for disinfecting complete dentures contaminated with two microorganisms. Microwave irradiation (650 W for 3 minutes) and both chemical methods showed no detectable bacterial growth at…

Microwave radiation is effective at disinfecting dental stone surfaces without changing their physical properties.

Research RF Safe Research Library Jan 1, 2017

This in vitro study tested 900-W microwave radiation regimens (3, 5, or 7 minutes) to disinfect type IV dental stone surfaces contaminated with S. aureus, E. coli, or C. albicans. The authors report that 5 and 7 minutes achieved sterilization for S. aureus, while 3 minutes did not fully sterilize; all times were…

[Protective effects of Genistein on human renal tubular epithelial cells damage of microwave radiation].

Research RF Safe Research Library Jan 1, 2017

This in vitro study exposed human proximal renal tubular epithelial cells (HKC) to microwave irradiation for 24 hours and assessed cell injury, oxidative stress, and cell death. The authors report increased injury markers (LDH, NAG), increased oxidative stress (higher MDA, lower SOD), and more apoptosis/necrosis…

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…

[Effects of 50 Hz sinusoidal magnetic field on Ca2+ release channel ryanodine receptor of sarcoplasmic reticulum vesicles].

Research RF Safe Research Library Jan 1, 2009

This in vitro study examined whether a 50 Hz sinusoidal magnetic field affects the sarcoplasmic reticulum calcium release channel RyR1. A 0.4 mT exposure for 30 minutes increased SR Ca2+ release rate and [(3)H]-ryanodine binding under NADH/NAD+ conditions. The authors also report increased NADH oxidation and…

Electric field-induced astrocyte alignment directs neurite outgrowth.

Research RF Safe Research Library Jan 1, 2006

This in vitro study examined whether astrocyte alignment induced by an applied electric field influences neurite outgrowth. Astrocytes were pre-aligned using a physiological-strength electric field (500 mV mm(-1)), and dorsal root ganglia cells were then seeded onto them. Neurite outgrowth at 24 and 48 hours was…

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