2,434 results match your criteria Bioelectromagnetics[Journal]


Modulation of resting-state brain functional connectivity by exposure to acute fourth-generation long-term evolution electromagnetic field: An fMRI study.

Bioelectromagnetics 2019 Jan;40(1):42-51

China Academy of Information and Communications Technology, Beijing, China.

By now, the neurophysiological effect of electromagnetic field (EMF) exposure and its underlying regulating mechanisms are not well manifested. In this study, we aimed to investigate whether acute long-term evolution (LTE) EMF exposure could modulate brain functional connectivity using regional homogeneity (ReHo) method and seed-based analysis on resting-state functional magnetic resonance imaging (fMRI). We performed the LTE-EMF exposure experiment and acquired the resting-state brain activities before and after EMF exposure. Read More

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http://dx.doi.org/10.1002/bem.22165DOI Listing
January 2019

Biological effects of static magnetic fields and zinc isotopes on E. coli bacteria.

Bioelectromagnetics 2019 Jan;40(1):62-73

Orenburg University, Orenburg, Russia.

The sensitivity of intracellular enzymatic systems to static magnetic fields (SMFs) and magnetic isotopes has been shown both in vitro and in vivo. These effects are determined by the spin-dependent magnetosensitive stages of enzymatic reactions. The search for experimental evidence of the combined effect of SMFs and zinc magnetic isotope Zn on the intracellular processes on Escherichia coliEscherichia coli bacteria has taken place in vivo. Read More

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http://dx.doi.org/10.1002/bem.22162DOI Listing
January 2019

50-Hz MF does not affect global DNA methylation of SH-SY5Y cells treated with the neurotoxin MPP.

Bioelectromagnetics 2019 Jan 7;40(1):33-41. Epub 2018 Dec 7.

Division of Health Protection Technologies, ENEA-Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Rome, Italy.

Exposure to extremely low frequency magnetic fields (ELF-MFs) has been associated with an increased risk of neurodegenerative disorders. The underlying mechanisms, however, are still debated. Since epigenetics play a key role in the neurodegenerative process, we investigated whether exposure to ELF-MF (50 Hz, 1 mT) might affect global DNA methylation of SH-SY5Y dopaminergic-like neuroblastoma cells. Read More

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http://dx.doi.org/10.1002/bem.22158DOI Listing
January 2019

EMF exposure variation among MRI sequences from pediatric examination protocols.

Bioelectromagnetics 2019 Jan 30;40(1):3-15. Epub 2018 Nov 30.

Department of Radiation Sciences, Radiation Physics, Umeå University, Umeå, Sweden.

The magnetic resonance imaging (MRI) exposure environment is unique due to the mixture and intensity of magnetic fields involved. Current safety regulations are based on well-known acute effects of heating and neuroexcitation while the scientific grounds for possible long-term effects from MRI exposure are lacking. Epidemiological research requires careful exposure characterization, and as a first step toward improved exposure assessment we set out to characterize the MRI-patient exposure environment. Read More

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http://dx.doi.org/10.1002/bem.22159DOI Listing
January 2019
1 Read

An empirical formula for temperature adjustment of complex permittivity of human skin in the terahertz frequencies.

Bioelectromagnetics 2019 Jan 26;40(1):74-79. Epub 2018 Nov 26.

Swinburne University of Technology, Melbourne, Australia.

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http://dx.doi.org/10.1002/bem.22156DOI Listing
January 2019
1 Read

Hypomagnetic fields cause anxiety in adult male mice.

Bioelectromagnetics 2019 Jan 26;40(1):27-32. Epub 2018 Nov 26.

Beijing University of Chinese Medicine, Beijing, China.

Hypomagnetic fields (HMF), that is, the elimination of the geomagnetic field (GMF), are a risk factor to the health of astronauts in outer space. It has been established that continuous HMF exposure affects cytoskeleton assembly, cell proliferation, embryonic development, and even learning and memory. In addition, although there were some previous studies that focused on the effects of long-term HMF-exposure, so far very limited investigations have been conducted to examine the short-term HMF effect in animals. Read More

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http://doi.wiley.com/10.1002/bem.22155
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http://dx.doi.org/10.1002/bem.22155DOI Listing
January 2019
5 Reads

High-voltage electrostatic field-induced oxidative stress: Characterization of the physiological effects in Sitobion avenae (Hemiptera: Aphididae) across multiple generations.

Bioelectromagnetics 2019 Jan 22;40(1):52-61. Epub 2018 Nov 22.

State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, China.

In recent decades, man-made electric fields have greatly increased the intensity of electrostatic fields that are pervasively present in the environment. To better understand the physiological alterations exhibited by herbivorous insects in response to changing electric environments, we determined the activities of anti-oxidative enzymes and the metabolic rate of Sitobion avenae Fabricius (Hemiptera: Aphididae) over multiple generations in response to direct and host-seed exposure to a high-voltage electrostatic field (HVEF) of varying strength for different durations. Under controlled greenhouse conditions, 20-min direct exposure of S. Read More

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http://doi.wiley.com/10.1002/bem.22157
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http://dx.doi.org/10.1002/bem.22157DOI Listing
January 2019
1 Read

Effects of 7 T static magnetic fields on the expression of biological markers and the formation of bone in rats.

Bioelectromagnetics 2019 Jan 22;40(1):16-26. Epub 2018 Nov 22.

Department of Public Health, Health Management and Policy, Nara Medical University School of Medicine, Kashihara, Japan.

In this study, we aimed to evaluate the effects of 7 T static magnetic fields (SMFs) on rat mesenchymal stem cells (MSCs) in order to determine whether strong SMFs affected the osteogenesis of MSCs. MSCs were prepared from bone marrow cells obtained from the femurs of 7-week-old male Fischer 344 rats. MSCs were then combined with β-tricalcium phosphate (β-TCP), yielding two types of TCP/MSC constructs (TCP/P-1 and P-2) on day 0. Read More

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http://dx.doi.org/10.1002/bem.22161DOI Listing
January 2019
4 Reads

Editorial.

Authors:
James Lin

Bioelectromagnetics 2018 12;39(8):644-648

Editor-in-Chief.

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http://dx.doi.org/10.1002/bem.22160DOI Listing
December 2018

The effects of electromagnetic fields on cultured human retinal pigment epithelial cells.

Bioelectromagnetics 2018 Dec;39(8):585-594

Ocular Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

A great deal of evidence has confirmed that electromagnetic fields (EMFs) can affect the central nervous system. In this study, cultured neonatal human retinal pigment epithelial (hRPE) cells were exposed to pulsed EMF of 1 mT intensity and 50 Hz frequency 8 h daily for 3 days. In addition to cell proliferation and cell death assays, immunocytochemistry for RPE65, PAX6, nestin, and cytokeratin 8/18 proteins were performed. Read More

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http://dx.doi.org/10.1002/bem.22154DOI Listing
December 2018
6 Reads
1.705 Impact Factor

Theoretical and numerical assessment of maximally allowable power-density averaging area for conservative electromagnetic exposure assessment above 6 GHz.

Bioelectromagnetics 2018 Dec 1;39(8):617-630. Epub 2018 Nov 1.

Foundation for Research on Information Technologies in Society (IT'IS), Zurich, Switzerland.

The objective of this paper is to determine a maximum averaging area for power density (PD) that limits the maximum temperature increase to a given threshold for frequencies above 6 GHz. This maximum area should be conservative for any transmitter at any distance >2 mm from the primary transmitting antennas or secondary field-generating sources. To derive a generically valid maximum averaging area, an analytical approximation for the peak temperature increase caused by localized exposure was derived. Read More

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http://doi.wiley.com/10.1002/bem.22147
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http://dx.doi.org/10.1002/bem.22147DOI Listing
December 2018
1 Read

Synergistic effect of rice bran extract and extremely low-frequency electromagnetic fields on dermal papilla/melanocytes in melanogenesis.

Bioelectromagnetics 2018 Dec 29;39(8):595-603. Epub 2018 Oct 29.

Department of Medical Biotechnology (BK21 Plus team), Dongguk University, Gyeonggi-Do, Korea.

Melanocytes in hair are located around dermal papilla cells at the tip of the hair follicle. In this study, we examined the melanogenesis of a three-dimensional (3D) hair dermal papilla model treated with natural extracts and electromagnetic fields (EMFs). The 3D model involved dermal papilla-like tissue (DPLT), an aggregation of a mixture of dermal papilla cells, and melanocytes in microwells. Read More

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http://doi.wiley.com/10.1002/bem.22151
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http://dx.doi.org/10.1002/bem.22151DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6283238PMC
December 2018
5 Reads

Pulsed electromagnetic fields prevented the decrease of bone formation in hindlimb-suspended rats by activating sAC/cAMP/PKA/CREB signaling pathway.

Bioelectromagnetics 2018 Dec 23;39(8):569-584. Epub 2018 Oct 23.

Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, China.

Microgravity is one of the main threats to the health of astronauts. Pulsed electromagnetic fields (PEMFs) have been considered as one of the potential countermeasures for bone loss induced by space flight. However, the optimal therapeutic parameters of PEMFs have not been obtained and the action mechanism is still largely unknown. Read More

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http://doi.wiley.com/10.1002/bem.22150
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http://dx.doi.org/10.1002/bem.22150DOI Listing
December 2018
6 Reads

Dealing with crosstalk in electromagnetic field measurements of portable devices.

Bioelectromagnetics 2018 Oct 18;39(7):529-538. Epub 2018 Oct 18.

Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland.

Portable devices measuring radiofrequency electromagnetic fields (RF-EMF) are affected by crosstalk: signals originating in one frequency band that are unintentionally registered in another. If this is not corrected, total exposure to RF-EMF is biased, particularly affecting closely spaced frequency bands such as GSM 1800 downlink (1,805-1,880 MHz), DECT (1,880-1,900 MHz), and UMTS uplink (1,920-1,980 MHz). This study presents an approach to detect and correct crosstalk in RF-EMF measurements, taking into account the real-life setting in which crosstalk is intermittently present, depending on the exact frequency of the signal. Read More

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http://doi.wiley.com/10.1002/bem.22142
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http://dx.doi.org/10.1002/bem.22142DOI Listing
October 2018
8 Reads

Effect of low-level 1800 MHz radiofrequency radiation on the rat sciatic nerve and the protective role of paricalcitol.

Bioelectromagnetics 2018 Dec 16;39(8):631-643. Epub 2018 Oct 16.

Faculty of Medicine, Department of Biophysics, Mersin University, Mersin, Turkey.

The nervous system is an important target of radiofrequency (RF) radiation exposure since it is the excitable component that is potentially able to interact with electromagnetic fields. The present study was designed to investigate the effects of 1,800 MHz RF radiation and the protective role of paricalcitol on the rat sciatic nerve. Rats were divided into four groups as control, paricalcitol, RF, and RF + paricalcitol. Read More

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http://dx.doi.org/10.1002/bem.22149DOI Listing
December 2018
7 Reads

Evaluation of occupational exposure to static magnetic field in MRI sites based on body pose estimation and SMF analytical computation.

Bioelectromagnetics 2018 Oct 11;39(7):503-515. Epub 2018 Oct 11.

IADI, INSERM, Université de Lorraine, CHRU Nancy, Nancy, France.

This paper tackles the problem of estimating exposure to static magnetic field (SMF) in magnetic resonance imaging (MRI) sites using a non-invasive approach. The proposed approach relies on a vision-based system to detect people's body parts and on a mathematical model to compute SMF exposure. A multi-view camera system was used to capture the MRI room, and a vision-based system was applied to detect body parts. Read More

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http://doi.wiley.com/10.1002/bem.22145
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http://dx.doi.org/10.1002/bem.22145DOI Listing
October 2018
4 Reads

Some recommendations for experimental work in magnetobiology, revisited.

Bioelectromagnetics 2018 10 10;39(7):556-564. Epub 2018 Oct 10.

Department of Radiobiology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Science, Bratislava, Slovakia.

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http://doi.wiley.com/10.1002/bem.22144
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http://dx.doi.org/10.1002/bem.22144DOI Listing
October 2018
17 Reads

Custom edge-element FEM solver and its application to eddy-current simulation of realistic 2M-element human brain phantom.

Bioelectromagnetics 2018 Dec 5;39(8):604-616. Epub 2018 Oct 5.

School of Electrical and Electronic Engineering, University of Manchester, Manchester, United Kingdom.

Extensive research papers of three-dimensional computational techniques are widely used for the investigation of human brain pathophysiology. Eddy current analyzing could provide an indication of conductivity change within a biological body. A significant obstacle to current trend analyses is the development of a numerically stable and efficiency-finite element scheme that performs well at low frequency and does not require a large number of degrees of freedom. Read More

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http://doi.wiley.com/10.1002/bem.22148
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http://dx.doi.org/10.1002/bem.22148DOI Listing
December 2018
2 Reads

The effect of 20-week continuous 60 Hz magnetic field exposure on testicular function in sprague-dawley rats.

Bioelectromagnetics 2018 Oct 5;39(7):539-546. Epub 2018 Oct 5.

Institute of Medical Science, College of Medicine, Hallym University, Chuncheon, South Korea.

Accumulating evidence does not yet confirm the effect of power line frequency magnetic field (MF) on human health and fertility. We recently reported that, at continuous 60 Hz MF exposure in mice, the dose given as magnetic flux density (tesla; T) and duration of exposure was related to induce testicular germ cell apoptosis. We aimed to characterize the effect of a 20-week continuous exposure to 60 Hz MF on the motility, morphology, and number of sperm as well as the apoptosis of testicular germ cell in rats. Read More

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http://doi.wiley.com/10.1002/bem.22146
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http://dx.doi.org/10.1002/bem.22146DOI Listing
October 2018
5 Reads

Effect of magnetic field on in vitro seedling growth and shoot regeneration from cotyledon node explants of Lathyrus chrysanthus boiss.

Bioelectromagnetics 2018 Oct 27;39(7):547-555. Epub 2018 Sep 27.

Faculty of Agriculture, Department of Field Crops, Ankara University, Ankara, Turkey.

The stimulatory effects on germination of seeds and growth of plants of static magnetic field (MF) pre-treatments depending on MF intensity, exposure time periods, signal form, flux density, and source frequencies on plants are reported. Seed germination frequency is low due to dormancy in Lathyrus chrysanthus Boiss. from Fabaceae family, consisting of 187 taxa. Read More

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http://dx.doi.org/10.1002/bem.22139DOI Listing
October 2018

Characterization of the suppressive effects of extremely-low-frequency electric fields on a stress-induced increase in the plasma glucocorticoid level in mice.

Bioelectromagnetics 2018 Oct 9;39(7):516-528. Epub 2018 Aug 9.

Bio-Self-Regulating Science Laboratory, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan.

We recently suggested that an increase in the plasma glucocorticoid (GC) level in immobilized mice is suppressed by a 50-Hz electric field (EF) in an EF strength-dependent manner. The present study aimed to assess the anti-stress effect of EFs in three scenarios: exposure to an EF of either 50 or 60 Hz, which are the standard power frequencies in most regions; varying levels of environmental brightness during EF exposure; complete or partial shielding of the mouse from the EF. We compared the GC levels and blood parameters among control, EF-alone, immobilization-alone, and co-treatment groups. Read More

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http://dx.doi.org/10.1002/bem.22138DOI Listing
October 2018
2 Reads

Ataxia telangiectasia mutated deficiency does not result in genetic susceptibility to 50 Hz magnetic fields exposure in mouse embryonic fibroblasts.

Bioelectromagnetics 2018 Sep 9;39(6):476-484. Epub 2018 Aug 9.

Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou, China.

Extremely low frequency magnetic field (ELF-MF) has been classified as a possible carcinogen to humans by the International Agency for Research on Cancer [2002]. However, debate on the genotoxic effects of ELF-MF has continued due to lack of sufficient experimental evidence. Ataxia telangiectasia mutated (ATM) plays a central role in DNA damage repair; its deficiency can result in cellular sensitivity to DNA-damaging agents. Read More

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http://dx.doi.org/10.1002/bem.22140DOI Listing
September 2018
2 Reads

The interphase interval within a bipolar nanosecond electric pulse modulates bipolar cancellation.

Bioelectromagnetics 2018 Sep 9;39(6):441-450. Epub 2018 Jul 9.

Radio Frequency Bioeffects Branch, Bioeffects Division, Airman Systems Directorate, 711th Human Performance Wing, Air Force Research Laboratory, JBSA Fort Sam Houston, Texas.

Nanosecond electric pulse (nsEP) exposure generates an array of physiological effects. The extent of these effects is impacted by whether the nsEP is a unipolar (UP) or bipolar (BP) exposure. A 600 ns pulse can generate 71% more YO-PRO-1 uptake compared to a 600 ns + 600 ns pulse exposure. Read More

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http://dx.doi.org/10.1002/bem.22134DOI Listing
September 2018
3 Reads

Nanosecond pulsed electric field exposure does not induce the unfolded protein response in adult human dermal fibroblasts.

Bioelectromagnetics 2018 Sep 9;39(6):491-499. Epub 2018 Jul 9.

Radio Frequency Bioeffects Branch, Bioeffects Division, Airman Systems Directorate, 711th Human Performance Wing, Air Force Research Laboratory, JBSA Fort Sam Houston, Texas.

Cell-circuit models have suggested that nanosecond pulsed electric fields (nsPEFs) can disrupt intracellular membranes including endoplasmic reticulum (ER), mitochondria, and/or nucleus thereby inducing intrinsic apoptotic pathways. Therefore, we hypothesized that the unfolded protein response (UPR) would be activated, due to the fluctuations of ionic concentrations, upon poration of the ER membrane. Quantitative real-time polymerase chain reaction was utilized to measure changes in messenger RNA (mRNA) expression of specific ER stress genes in adult human dermal fibroblast (HDFa) cells treated with tunicamycin (TM) (known ER stress inducer) and cells exposed to nsPEFs (100, 10-ns pulses at 150 kV/cm delivered at a repetition rate of 1 Hz). Read More

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http://dx.doi.org/10.1002/bem.22131DOI Listing
September 2018
9 Reads

Effects of large gradient high magnetic field (LG-HMF) on the long-term culture of aquatic organisms: Planarians example.

Bioelectromagnetics 2018 Sep 6;39(6):428-440. Epub 2018 Jun 6.

Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, P.R. China.

Large gradient high magnetic field (LG-HMF) is a powerful tool to study the effects of altered gravity on organisms. In our study, a platform for the long-term culture of aquatic organisms was designed based on a special superconducting magnet with an LG-HMF, which can provide three apparent gravity levels (µ g, 1 g, and 2 g), along with a control condition on the ground. Planarians, Dugesia japonica, were head-amputated and cultured for 5 days in a platform for head reconstruction. Read More

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http://dx.doi.org/10.1002/bem.22135DOI Listing
September 2018
24 Reads
1.705 Impact Factor

Dose-response study for the highly aggressive and metastatic primary F3II mammary carcinoma under direct current.

Bioelectromagnetics 2018 Sep 5;39(6):460-475. Epub 2018 Jun 5.

Departamento de Telecomunicaciones, Facultad de Ingeniería Eléctrica, Universidad de Oriente, Santiago de Cuba, Cuba.

Electrochemical treatment has been suggested as an effective alternative to local cancer therapy. Nevertheless, its effectiveness decreases when highly aggressive primary tumors are treated. The aim of this research was to understand the growth kinetics of the highly aggressive and metastatic primary F3II tumor growing in male and female BALB/c/Cenp mice under electrochemical treatment. Read More

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http://dx.doi.org/10.1002/bem.22132DOI Listing
September 2018
5 Reads

SAR investigations on the exposure compliance of wearable wireless devices using infrared thermography.

Bioelectromagnetics 2018 Sep 5;39(6):451-459. Epub 2018 Jun 5.

RAMS Lab, Department of Telecommunication Engineering, SRM Institute of Science & Technology, Chennai, India.

Wearable electronics have become the norm over the last few years. Extensive use of wearable wireless devices (WWD) in greater proximity to the body has increased concern about potential biological effects due to the interaction of human tissues with electromagnetic (EM) fields. Human tissues absorb radiofrequency (RF) waves that are capable of affecting energy states at a molecular level, leading to unsafe effects. Read More

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http://dx.doi.org/10.1002/bem.22133DOI Listing
September 2018
24 Reads

Effects of combined magnetic fields on bacteria Rhodospirillum rubrum VKM B-1621.

Bioelectromagnetics 2018 Sep 24;39(6):485-490. Epub 2018 May 24.

Institute of Biochemistry and , Physiology of Microorganisms, Russian Academy of Sciences, Pushchino , Russia.

Bacteria are the simplest model of living organisms and thus are a convenient object for magnetobiological research. This paper describes some effects of combined magnetic fields (CMFs) on the bacterium Rhodospirillum rubrum strain VKM B-1621, which is not a pathogen but was selected due to its wide spectrum of growth abilities. The authors chose magnetic field-resonant phosphorus and iron (Fe ) because P-containing biochemical compounds (standard abbreviations PP , AMP, ADP, ATP) provide energy flows in bacteria while iron could take part in formation of magnetosensitive intracellular inclusions. Read More

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http://dx.doi.org/10.1002/bem.22130DOI Listing
September 2018
3 Reads

The antitumor effect of static and extremely low frequency magnetic fields against nephroblastoma and neuroblastoma.

Bioelectromagnetics 2018 Jul 2;39(5):375-385. Epub 2018 May 2.

Central Laboratory, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.

Certain magnetic fields (MF) have potential therapeutic antitumor effect whereas the underlying mechanism remains undefined. In this study, a well-characterized MF was applied to two common childhood malignancies, nephroblastoma and neuroblastoma. This MF has a time-averaged total intensity of 5. Read More

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http://doi.wiley.com/10.1002/bem.22124
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http://dx.doi.org/10.1002/bem.22124DOI Listing
July 2018
10 Reads

Reduction of the geomagnetic field delays Arabidopsis thaliana flowering time through downregulation of flowering-related genes.

Bioelectromagnetics 2018 Jul 30;39(5):361-374. Epub 2018 Apr 30.

Plant Physiology Unit, Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy.

Variations in magnetic field (MF) intensity are known to induce plant morphological and gene expression changes. In Arabidopsis thaliana Col-0, near-null magnetic field (NNMF, i.e. Read More

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http://dx.doi.org/10.1002/bem.22123DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6032911PMC
July 2018
7 Reads

Numerical evaluation of human exposure to WiMax patch antenna in tablet or laptop.

Bioelectromagnetics 2018 Jul 30;39(5):414-422. Epub 2018 Apr 30.

Institute of Clinical Physiology, CNR, Pisa, Italy.

The use of wireless communication devices, such as tablets or laptops, is increasing among children. Only a few studies assess specific energy absorption rate (SAR) due to exposure from wireless-enabled tablets and laptops, in particular with Worldwide Interoperability for Microwave Access (WiMax) technology. This paper reports the estimation of the interaction between an E-shaped patch antenna (3. Read More

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http://dx.doi.org/10.1002/bem.22128DOI Listing
July 2018
3 Reads

Pulsed electromagnetic field therapy in the treatment of pain and other symptoms in fibromyalgia: A randomized controlled study.

Bioelectromagnetics 2018 Jul 30;39(5):405-413. Epub 2018 Apr 30.

Department of Physical Medicine and Rehabilitation, Central Finland Central Hospital, Jyväskylä, Finland.

Low-energy pulsed electromagnetic field (PEMF) therapy has been suggested as a promising therapy to increase microcirculation, which is of great concern in patients with fibromyalgia. This study evaluated the effectiveness of PEMF therapy on the treatment of fibromyalgia. A group of 108 women with fibromyalgia were allocated to a 12-week treatment period with an active Bio-Electro-Magnetic-Energy-Regulation (BEMER) device and a similar treatment period with an inactive device. Read More

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http://doi.wiley.com/10.1002/bem.22127
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http://dx.doi.org/10.1002/bem.22127DOI Listing
July 2018
15 Reads

Effects of moderate intensity static magnetic fields on osteoclastic differentiation in mouse bone marrow cells.

Bioelectromagnetics 2018 Jul 30;39(5):394-404. Epub 2018 Apr 30.

Department of Prosthodontics, School of Dentistry, Kyung Hee University, Seoul, South Korea.

Although we recently demonstrated that static magnetic fields (SMFs) of 3, 15, and 50 mT stimulate osteoblastic differentiation, the effects of SMFs on osteoclastogenesis are still poorly understood. This study focused on the suppressive effects of SMFs on receptor activator of nuclear factor κB ligand (RANKL)-induced osteoclastogenesis and bone resorption. Direct SMFs inhibit RANKL-induced multinucleated osteoclast formation, tartrate-resistant acid phosphatase activity, and bone resorption in mouse bone marrow-derived macrophage cells. Read More

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http://dx.doi.org/10.1002/bem.22126DOI Listing
July 2018
5 Reads

Effects of 1.8 GHz radiofrequency field on microstructure and bone metabolism of femur in mice.

Bioelectromagnetics 2018 Jul 30;39(5):386-393. Epub 2018 Apr 30.

Faculty of Preventive Medicine, Department of Radiation Biology, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China.

To investigate the effects of 1.8 GHz radiofrequency (RF) field on bone microstructure and metabolism of femur in mice, C57BL/6 mice (male, age 4 weeks) were whole-body exposed or sham exposed to 1.8 GHz RF field. Read More

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http://doi.wiley.com/10.1002/bem.22125
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http://dx.doi.org/10.1002/bem.22125DOI Listing
July 2018
7 Reads

Cellular ATP levels are affected by moderate and strong static magnetic fields.

Bioelectromagnetics 2018 Jul 30;39(5):352-360. Epub 2018 Apr 30.

High Magnetic Field Laboratory, Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China.

Mitochondrion is the major cellular energy producing organelle that is at the boundary between chemical reactions and physical processes. Although mitochondria have been shown to be affected by physical methods such as nonthermal plasma, whether static magnetic field (SMF) could also affect them is still unclear. Here we used rat adrenal PC12 cells to compare SMFs of different intensities for their effects on ATP (adenosine-5'-triphosphate), the major energy source produced by mitochondria, which is essential for various cellular processes. Read More

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http://dx.doi.org/10.1002/bem.22122DOI Listing
July 2018
4 Reads

Effect of pharmacological modulation of actin and myosin on collective cell electrotaxis.

Bioelectromagnetics 2018 May 17;39(4):289-298. Epub 2018 Apr 17.

Department of Mechanical & Aerospace Engineering, Old Dominion University, Norfolk, Virginia.

Electrotaxis-the directional migration of cells in response to an electric field-is most evident in multicellular collectives and plays an important role in physiological contexts. While most cell types respond to applied electric fields of the order of a Volt per centimeter, our knowledge of the factors influencing this response is limited. This is especially true for collective cell electrotaxis, in which the subcellular migration response within a cell has to be coordinated with coupled neighboring cells. Read More

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http://dx.doi.org/10.1002/bem.22119DOI Listing
May 2018
7 Reads

Effect of homogeneous static magnetic treatment on the adsorption capacity in maize seeds (Zea mays L.).

Bioelectromagnetics 2018 Jul 11;39(5):343-351. Epub 2018 Apr 11.

Research Group on Electromagnetic Fields Environment and Public Health, Universidad de Caldas, Manizales, Colombia.

In order to analyze the treatment of seeds with homogeneous static magnetic field on the water adsorption process, an experimental-theoretical study of hygroscopic equilibrium in maize seeds (Zea mays L. cv. ICAV305) was carried out. Read More

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http://dx.doi.org/10.1002/bem.22120DOI Listing
July 2018
7 Reads

Stroke localization and classification using microwave tomography with k-means clustering and support vector machine.

Authors:
Lei Guo Amin Abbosh

Bioelectromagnetics 2018 May 25;39(4):312-324. Epub 2018 Mar 25.

School of Information Technology and Electrical Engineering, University of Queensland, Brisbane, Australia.

For any chance for stroke patients to survive, the stroke type should be classified to enable giving medication within a few hours of the onset of symptoms. In this paper, a microwave-based stroke localization and classification framework is proposed. It is based on microwave tomography, k-means clustering, and a support vector machine (SVM) method. Read More

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http://dx.doi.org/10.1002/bem.22118DOI Listing
May 2018
7 Reads

Effect of cell phone radiofrequency radiation on body temperature in rodents: Pilot studies of the National Toxicology Program's reverberation chamber exposure system.

Bioelectromagnetics 2018 Apr 14;39(3):190-199. Epub 2018 Mar 14.

IIT Research Institute, Chicago, Illinois.

Radiofrequency radiation (RFR) causes heating, which can lead to detrimental biological effects. To characterize the effects of RFR exposure on body temperature in relation to animal size and pregnancy, a series of short-term toxicity studies was conducted in a unique RFR exposure system. Young and old B6C3F1 mice and young, old, and pregnant Harlan Sprague-Dawley rats were exposed to Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) RFR (rats = 900 MHz, mice = 1,900 MHz) at specific absorption rates (SARs) up to 12 W/kg for approximately 9 h a day for 5 days. Read More

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http://dx.doi.org/10.1002/bem.22116DOI Listing
April 2018
12 Reads

From the basic science of biological effects of ultrashort electrical pulses to medical therapies.

Bioelectromagnetics 2018 May 12;39(4):257-276. Epub 2018 Mar 12.

Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, Virginia.

This article is based on my presentation at the D'Arsonval Ceremony at the Joint Annual Meeting of the Bioelectromagnetics Society and the European BioElectromagnetics Association in Hangzhou, China, in June of 2017. It describes the pathway from the first studies on the effects of intense, nanosecond pulses on biological cells to the development of medical therapies based on these effects. The motivation for the initial studies of the effects of high voltage, nanosecond pulses on mammalian cells was based on a simple electrical circuit model, which predicted that such pulses allow us to affect not just the plasma membrane but also the subcellular structures. Read More

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http://dx.doi.org/10.1002/bem.22117DOI Listing
May 2018
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Radiofrequency exposure assessment of baby surveillance devices in the frequency range 400 MHz-2.45 GHz.

Bioelectromagnetics 2018 Apr 1;39(3):244-248. Epub 2018 Mar 1.

imec - WAVES, Department of Information Technology at Ghent University, Ghent, Belgium.

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http://dx.doi.org/10.1002/bem.22113DOI Listing
April 2018
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Heart rate variability affected by radiofrequency electromagnetic field in adolescent students.

Bioelectromagnetics 2018 May 22;39(4):277-288. Epub 2018 Feb 22.

Jessenius Faculty of Medicine in Martin, Department of Medical Biophysics, Comenius University in Bratislava, Martin, Slovakia.

This study examines the possible effect of radiofrequency (RF) electromagnetic fields (EMF) on the autonomic nervous system (ANS). The effect of RF EMF on ANS activity was studied by measuring heart rate variability (HRV) during ortho-clinostatic test (i.e. Read More

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http://dx.doi.org/10.1002/bem.22115DOI Listing
May 2018
27 Reads

Effects of time delays on biological feedback systems and electromagnetic field exposures.

Bioelectromagnetics 2018 Apr 19;39(3):249-252. Epub 2018 Feb 19.

University of Colorado, Boulder, Colorado.

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http://dx.doi.org/10.1002/bem.22114DOI Listing
April 2018
5 Reads

ATP sensitive K channel subunits (Kir6.1, Kir6.2) are the candidate mediators regulating ameliorating effects of pulsed magnetic field on aortic contractility in diabetic rats.

Bioelectromagnetics 2018 May 15;39(4):299-311. Epub 2018 Feb 15.

Faculty of Medicine, Department of Medical Biology, Cukurova University, Adana, Turkey.

Diabetes mellitus is a metabolic disease that causes increased morbidity and mortality in developed and developing countries. With recent advancements in technology, alternative treatment methods have begun to be investigated in the world. This study aims to evaluate the effect of pulsed magnetic field (PMF) on vascular complications and contractile activities of aortic rings along with Kir6. Read More

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http://dx.doi.org/10.1002/bem.22111DOI Listing
May 2018
17 Reads

Tissue models for RF exposure evaluation at frequencies above 6 GHz.

Bioelectromagnetics 2018 Apr 8;39(3):173-189. Epub 2018 Feb 8.

Department of Electrical Engineering, University of Maryland, College Park, Maryland.

Exposures to radiofrequency (RF) energy above 6 GHz are characterized by shallow energy penetration, typically limited to the skin, but the subsequent increase in skin temperature is largely determined by heat transport in subcutaneous layers. A detailed analysis of the energy reflection, absorption, and power density distribution requires a knowledge of the properties of the skin layers and their variations. We consider an anatomically detailed model consisting of 3 or 4 layers (stratum corneum, viable epidermis plus dermis, subcutaneous fat, and muscle). Read More

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http://dx.doi.org/10.1002/bem.22110DOI Listing
April 2018
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Magnetic field pattern synthesis and its application in targeted drug delivery: Design and implementation.

Bioelectromagnetics 2018 May 2;39(4):325-338. Epub 2018 Feb 2.

Bioelectromagnetics Group, Applied Electromagnetics Laboratory, School of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran.

In cancer therapy, magnetic drug targeting is considered as an effective treatment to reduce chemotherapy's side effects. The accurate design and shaping of magnetic fields are crucial for healthy cells to be immune from chemotherapeutics. In this paper, arbitrary 2-dimensional spatial patterns of magnetic fields from DC to megahertz are represented in terms of spatial Fourier spectra with sinusoidal eigenfunctions. Read More

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http://dx.doi.org/10.1002/bem.22107DOI Listing
May 2018
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Occupational exposure to extremely low-frequency magnetic fields and the risk of ALS: A systematic review and meta-analysis.

Bioelectromagnetics 2018 Feb 19;39(2):156-163. Epub 2018 Jan 19.

Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands.

We performed a meta-analysis to examine associations of occupational exposure to extremely-low frequency magnetic fields (ELF-MF) with amyotrophic lateral sclerosis (ALS). Epidemiologic studies were identified in EMBASE and MEDLINE, in reference lists and a specialist database. We included studies that reported risk estimates of ALS in association with occupational ELF-MF exposure. Read More

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http://dx.doi.org/10.1002/bem.22104DOI Listing
February 2018
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Calibration and non-orthogonality correction of three-axis Hall sensors for the monitoring of MRI workers' exposure to static magnetic fields.

Bioelectromagnetics 2018 Feb 19;39(2):108-119. Epub 2018 Jan 19.

U947, Inserm, Nancy, France.

A Magnetic Resonance Imaging (MRI) scanner uses three different electromagnetic fields (EMF) to produce body images: a static permanent magnetic field (MF), several pulsed magnetic gradients, and a radiofrequency pulse. As a result, any occupation that includes an MRI exposes workers to a strong MF. The World Health Organization has now given the monitoring of occupational EMF exposure a high priority. Read More

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http://dx.doi.org/10.1002/bem.22102DOI Listing
February 2018
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Pulsed electromagnetic field improves subchondral bone microstructure in knee osteoarthritis rats through a Wnt/β-catenin signaling-associated mechanism.

Bioelectromagnetics 2018 Feb 18;39(2):89-97. Epub 2017 Dec 18.

Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China.

Pulsed electromagnetic field (PEMF) is often used for management of osteoarthritis (OA). The aim of the study was to determine whether PEMF can successfully improve subchondral bone microstructure through a Wnt/β-catenin signaling-associated pathway in rats with knee OA induced by low-dose monosodium iodoacetate (MIA). Seventy-two 12-week-old male Sprague-Dawley rats were randomly assigned to three groups: OA (n = 24), PEMF (n = 24), and Control (n = 24). Read More

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http://dx.doi.org/10.1002/bem.22106DOI Listing
February 2018
12 Reads

Uniform magnetic targeting of magnetic particles attracted by a new ferromagnetic biological patch.

Bioelectromagnetics 2018 Feb 18;39(2):98-107. Epub 2017 Dec 18.

Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China.

A new non-toxic ferromagnetic biological patch (MBP) was designed in this paper. The MBP consisted of two external layers that were made of transparent silicone, and an internal layer that was made of a mixture of pure iron powder and silicon rubber. Finite-element analysis showed that the local inhomogeneous magnetic field (MF) around the MBP was generated when MBP was placed in a uniform MF. Read More

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http://dx.doi.org/10.1002/bem.22105DOI Listing
February 2018
7 Reads