keyword
MENU ▼
Read by QxMD icon Read
search

Pulsed electromagnetic field

keyword
https://www.readbyqxmd.com/read/28624853/biophysical-stimulation-improves-clinical-results-of-matrix-assisted-autologous-chondrocyte-implantation-in-the-treatment-of-chondral-lesions-of-the-knee
#1
Marco Collarile, Andrea Sambri, Giada Lullini, Matteo Cadossi, Claudio Zorzi
PURPOSE: The purpose of the present study was to evaluate the effects of pulsed electromagnetic fields (PEMFs) on clinical outcome in patients who underwent arthroscopic matrix-assisted autologous chondrocyte implantation (MACI) for chondral lesions of the knee. METHODS: Thirty patients affected by grade III and IV International Cartilage Repair Society chondral lesions of the knee underwent MACI. After surgery, patients were randomly assigned to either experimental group (PEMFs 4 h per day for 60 days) or control group ...
June 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28614775/changes-in-viability-of-rat-adipose-derived-stem-cells-isolated-from-abdominal-perinuclear-adipose-tissue-stimulated-with-pulsed-electromagnetic-field
#2
A Baranowska, B Skowron, B Nowak, K Ciesielczyk, P Guzdek, K Gil, J Kaszuba-Zwoinska
Previous experiments demonstrated that low-frequency electromagnetic field (LF-EMF) may activate cellular death pathways in proliferating cells. Therefore, we hypothesized that LF-EMF may also influence viability of highly proliferating undifferentiated adipose-derived stem cells. Obesity is classified as a civilization disease; its etiopathogenesis is presumed to include both genetic predisposition and influence of modified environmental factors, such as unbalanced diet with excess calories and/or too low physical activity...
April 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28579894/osteogenic-differentiation-of-bone-marrow-mesenchymal-stem-cells-by-magnetic-nanoparticle-composite-scaffolds-under-a-pulsed-electromagnetic-field
#3
Jianghong Huang, Daming Wang, Jielin Chen, Wei Liu, Li Duan, Wei You, Weimin Zhu, Jianyi Xiong, Daping Wang
This study was conducted to investigate the effect of magnetic nanoparticle composite scaffold under a pulsed electromagnetic field on bone marrow mesenchymal stem cells (BMSCs), which was achieved by examining the biological behaviors of cell adhesion, proliferation and differentiation on the surface of the scaffolds. This may provide some experimental evidence for the use of magnetic nanoparticles in medical application. The magnetic nanoparticle composite scaffolds were evaluated and characterized by the following indexes: the cell proliferation was detected by the CCK-8 method, the alkaline phosphatase (ALP) activity was examined by a detection kit, and the expression of type I collagen and osteocalcin gene were evaluated by RT-PCR...
May 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28578480/acute-neuroinflammation-promotes-cell-responses-to-1800%C3%A2-mhz-gsm-electromagnetic-fields-in-the-rat-cerebral-cortex
#4
Julie Lameth, Annie Gervais, Catherine Colin, Philippe Lévêque, Thérèse M Jay, Jean-Marc Edeline, Michel Mallat
Mobile phone communications are conveyed by radiofrequency (RF) electromagnetic fields, including pulse-modulated global system for mobile communications (GSM)-1800 MHz, whose effects on the CNS affected by pathological states remain to be specified. Here, we investigated whether a 2-h head-only exposure to GSM-1800 MHz could impact on a neuroinflammatory reaction triggered by lipopolysaccharide (LPS) in 2-week-old or adult rats. We focused on the cerebral cortex in which the specific absorption rate (SAR) of RF averaged 2...
June 3, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28558424/on-the-biophysical-mechanism-of-sensing-atmospheric-discharges-by-living-organisms
#5
Dimitris J Panagopoulos, Alfonso Balmori
Atmospheric electrical discharges during thunderstorms, and the related electromagnetic fields (EMFs)/waves called sferics, can be sensed by humans at long distances through a variety of symptoms, mainly headache, fatigue, etc. Up to today there is no explanation for this association. Sferics consist of partially polarized electromagnetic pulses with an oscillating carrier signal in the very low frequency (VLF) band and a pulse repetition frequency in the extremely low frequency (ELF) band. Their ELF intensity may reach ~5mV/m at global ranges, and ~0...
December 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28555640/attosecond-interferometry-with-self-amplified-spontaneous-emission-of-a-free-electron-laser
#6
Sergey Usenko, Andreas Przystawik, Markus Alexander Jakob, Leslie Lamberto Lazzarino, Günter Brenner, Sven Toleikis, Christian Haunhorst, Detlef Kip, Tim Laarmann
Light-phase-sensitive techniques, such as coherent multidimensional spectroscopy, are well-established in a broad spectral range, already spanning from radio-frequencies in nuclear magnetic resonance spectroscopy to visible and ultraviolet wavelengths in nonlinear optics with table-top lasers. In these cases, the ability to tailor the phases of electromagnetic waves with high precision is essential. Here we achieve phase control of extreme-ultraviolet pulses from a free-electron laser (FEL) on the attosecond timescale in a Michelson-type all-reflective interferometric autocorrelator...
May 30, 2017: Nature Communications
https://www.readbyqxmd.com/read/28550499/systematic-review-of-fmri-compatible-devices-design-and-testing-criteria
#7
REVIEW
V Hartwig, N Carbonaro, A Tognetti, N Vanello
Functional Magnetic Resonance Imaging (fMRI) is at present one of the most used methodologies for functional brain exploration, both in clinical and research settings. fMRI can noninvasively measure neural activity by using specific experimental paradigms. Often, these paradigms require the stimulation of the subject to perform sensorimotor tasks: in the past, the stimuli have been administered manually for investigating fundamental aspects of tactile perception and somatosensory processing. Nowadays, the use of mechatronic devices to stimulate the subject during fMRI studies is growing, also to assure reproducibility, control, and monitoring of task performances...
May 26, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28539622/high-visibility-first-order-subwavelength-interference-based-on-light-pulse-storage-via-electromagnetically-induced-transparency
#8
Zhixiang Li, Jianji Liu, Hongming Fan, Jiachen Liu, Guoquan Zhang
We achieved high visibility first-order subwavelength interference based on light pulse storage and retrieval technique via electromagnetically induced transparency (EIT) effect in a Pr(3+):Y2SiO5 crystal. The interference field distribution of a double-slit was first stored in a Pr(3+):Y2SiO5 crystal based on EIT effect, and then it was read out by a spatially modulated readout beam. The retrieved output field is proportional to the product of the input interference field of the double-slit and the spatially modulated readout field...
May 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28537455/efficacy-of-dipeptide-coated-magnetic-nanoparticles-in-lung-cancer-models-under-pulsed-electromagnetic-field
#9
Ganga Baskar, Mathangi Ravi, Jiban Jyoti Panda, Anjali Khatri, Bhawna Dev, Roy Santosham, Sekar Sathiya, Chidambaram Saravana Babu, Virander Singh Chauhan, Suresh K Rayala, Ganesh Venkatraman
Lung cancer is the leading cause of cancer deaths and the overall 5-year survival rate is less than 17%. Hyperthermia is an alternative approach for the treatment of lung cancer and is associated with fewer side effects. We employed ironoxide nanoparticles in inducing localized hyperthermia in lung cancer cells using a pulsed electromagnetic field (PEMF). We synthesized, characterized and determined the uptake of dipeptide-coated iron oxide nanoparticles. Further, their ability in inducing localized hyperthermia in PEMF on lung cancer cells was assessed...
May 24, 2017: Cancer Investigation
https://www.readbyqxmd.com/read/28534925/osmotin-loaded-magnetic-nanoparticles-with-electromagnetic-guidance-for-the-treatment-of-alzheimer-s-disease
#10
Faiz Ul Amin, Ali Kafash Hoshiar, Ton Duc Do, Yeongil Noh, Shahid Ali Shah, Muhammad Sohail Khan, Jungwon Yoon, Myeong Ok Kim
Alzheimer's disease (AD) is the most prevalent age-related neurodegenerative disease, pathologically characterized by the accumulation of aggregated amyloid beta (Aβ) in the brain. Here, we describe for the first time the development of a new, pioneering nanotechnology-based drug delivery approach for potential therapies for neurodegenerative diseases, particularly AD. We demonstrated the delivery of fluorescent carboxyl magnetic Nile Red particles (FMNPs) to the brains of normal mice using a functionalized magnetic field (FMF) composed of positive- and negative-pulsed magnetic fields generated by electromagnetic coils...
May 23, 2017: Nanoscale
https://www.readbyqxmd.com/read/28522446/non-contact-electromagnetic-induction-heating-for-eradicating-bacteria-and-yeasts-on-biomaterials-and-possible-relevance-to-orthopaedic-implant-infections-in-vitro-findings
#11
B G Pijls, I M J G Sanders, E J Kuijper, R G H H Nelissen
OBJECTIVES: Infection of implants is a major problem in elective and trauma surgery. Heating is an effective way to reduce the bacterial load in food preparation, and studies on hyperthermia treatment for cancer have shown that it is possible to heat metal objects with pulsed electromagnetic fields selectively (PEMF), also known as induction heating. We therefore set out to answer the following research question: is non-contact induction heating of metallic implants effective in reducing bacterial load in vitro? METHODS: Titanium alloy cylinders (Ti6Al4V) were exposed to PEMF from an induction heater with maximum 2000 watts at 27 kHz after being contaminated with five different types of micro-organisms: Staphylococcus epidermidis; Staphylococcus aureus; Pseudomonas aeruginosa; spore-forming Bacillus cereus; and yeast Candida albicans...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28512472/pulsed-electromagnetic-field-regulates-microrna-21-expression-to-activate-tgf-%C3%AE-signaling-in-human-bone-marrow-stromal-cells-to-enhance-osteoblast-differentiation
#12
Nagarajan Selvamurugan, Zhiming He, Daniel Rifkin, Branka Dabovic, Nicola C Partridge
Pulsed electromagnetic fields (PEMFs) have been documented to promote bone fracture healing in nonunions and increase lumbar spinal fusion rates. However, the molecular mechanisms by which PEMF stimulates differentiation of human bone marrow stromal cells (hBMSCs) into osteoblasts are not well understood. In this study the PEMF effects on hBMSCs were studied by microarray analysis. PEMF stimulation of hBMSCs' cell numbers mainly affected genes of cell cycle regulation, cell structure, and growth receptors or kinase pathways...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28510268/effect-of-intervention-initiation-timing-of-pulsed-electromagnetic-field-on-ovariectomy-induced-osteoporosis-in-rats
#13
Jun Zhou, Yuan Liao, Yahua Zeng, Haitao Xie, Chengxiao Fu, Neng Li
The aim of this study is to explore the effect of timing of initiation of pulsed electromagnetic field (PEMF) therapy on bone mass, microarchitecture, and biomechanical properties, and to investigate receptor activator of NF-kB (RANK) expression in ovariectomized (OVX) rats. Sixty female Sprague-Dawley rats were randomly divided into two equal batches of three groups each (10 rats in each group). The first batch comprised of sham-operated (Sham-0 group), ovariectomized (OVX-0 group), and ovariectomized plus treated with PEMF starting from the day of OVX (Early PEMF group)...
May 16, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28507996/effects-of-pulsed-electromagnetic-field-with-predatory-stress-on-functional-and-histological-index-of-injured-sciatic-nerve-in-rat
#14
Maryam Tasbih-Forosh, Leila Zarei, Ehsan Saboory, Mehran Bahrami-Bukani
OBJECTIVE: To assess the effect of combination of pulsed electromagnetic fields (PEMF) with predatory stress on transected sciatic nerve regeneration in rats. METHODS: In sham- operated group (SOG) the nerve was manipulated and left intact. The 10-mm rat sciatic nerve gap was created in rats. In transected group (Transected) nerve stumps were sutured to adjacent muscle and in vein graft group (VG) the gap was bridged using an inside-out vein graft. In VG/PEMF group the transected nerve was bridged using vein graft, phosphate buffered saline was administered into the graft and the whole body was exposed to PEMF...
April 2017: Bulletin of Emergency and Trauma
https://www.readbyqxmd.com/read/28504324/electromagnetic-fields-pulsed-radiofrequency-radiation-and-epigenetics-how-wireless-technologies-may-affect-childhood-development
#15
Cindy Sage, Ernesto Burgio
Mobile phones and other wireless devices that produce electromagnetic fields (EMF) and pulsed radiofrequency radiation (RFR) are widely documented to cause potentially harmful health impacts that can be detrimental to young people. New epigenetic studies are profiled in this review to account for some neurodevelopmental and neurobehavioral changes due to exposure to wireless technologies. Symptoms of retarded memory, learning, cognition, attention, and behavioral problems have been reported in numerous studies and are similarly manifested in autism and attention deficit hyperactivity disorders, as a result of EMF and RFR exposures where both epigenetic drivers and genetic (DNA) damage are likely contributors...
May 15, 2017: Child Development
https://www.readbyqxmd.com/read/28482141/notch-pathway-is-active-during-osteogenic-differentiation-of-human-bone-marrow-mesenchymal-stem-cells-induced-by-pulsed-electromagnetic-fields
#16
Leila Bagheri, Agnese Pellati, Paola Rizzo, Giorgio Aquila, Leo Massari, Monica De Mattei, Alessia Ongaro
Pulsed electromagnetic fields (PEMFs) have been used to treat bone diseases, particularly non-union healing. Although it is known that PEMFs promote the osteogenic differentiation of human mesenchymal stem cells (hMSCs), to date PEMF molecular mechanisms remain not clearly elucidated. The Notch signaling is a highly conserved pathway which regulates cell fate decisions and skeletal development. The aim of this study was to investigate if the known PEMF-induced osteogenic effects may involve the modulation of the Notch pathway...
May 8, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28462057/membrane-permeabilization-of-mammalian-cells-using-bursts-of-high-magnetic-field-pulses
#17
Vitalij Novickij, Janja Dermol, Audrius Grainys, Matej Kranjc, Damijan Miklavčič
BACKGROUND: Cell membrane permeabilization by pulsed electromagnetic fields (PEMF) is a novel contactless method which results in effects similar to conventional electroporation. The non-invasiveness of the methodology, independence from the biological object homogeneity and electrical conductance introduce high flexibility and potential applicability of the PEMF in biomedicine, food processing, and biotechnology. The inferior effectiveness of the PEMF permeabilization compared to standard electroporation and the lack of clear description of the induced transmembrane transport are currently of major concern...
2017: PeerJ
https://www.readbyqxmd.com/read/28452504/depletion-of-intense-fields
#18
D Seipt, T Heinzl, M Marklund, S S Bulanov
The interaction of charged particles and photons with intense electromagnetic fields gives rise to multiphoton Compton and Breit-Wheeler processes. These are usually described in the framework of the external field approximation, where the electromagnetic field is assumed to have infinite energy. However, the multiphoton nature of these processes implies the absorption of a significant number of photons, which scales as the external field amplitude cubed. As a result, the interaction of a highly charged electron bunch with an intense laser pulse can lead to significant depletion of the laser pulse energy, thus rendering the external field approximation invalid...
April 14, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28447616/high-order-harmonics-measured-by-the-photon-statistics-of-the-infrared-driving-field-exiting-the-atomic-medium
#19
N Tsatrafyllis, I K Kominis, I A Gonoskov, P Tzallas
High-order harmonics in the extreme-ultraviolet spectral range, resulting from the strong-field laser-atom interaction, have been used in a broad range of fascinating applications in all states of matter. In the majority of these studies the harmonic generation process is described using semi-classical theories which treat the electromagnetic field of the driving laser pulse classically without taking into account its quantum nature. In addition, for the measurement of the generated harmonics, all the experiments require diagnostics in the extreme-ultraviolet spectral region...
April 27, 2017: Nature Communications
https://www.readbyqxmd.com/read/28428549/low-noise-time-resolved-optical-sensing-of-electromagnetic-pulses-from-petawatt-laser-matter-interactions
#20
T S Robinson, F Consoli, S Giltrap, S J Eardley, G S Hicks, E J Ditter, O Ettlinger, N H Stuart, M Notley, R De Angelis, Z Najmudin, R A Smith
We report on the development and deployment of an optical diagnostic for single-shot measurement of the electric-field components of electromagnetic pulses from high-intensity laser-matter interactions in a high-noise environment. The electro-optic Pockels effect in KDP crystals was used to measure transient electric fields using a geometry easily modifiable for magnetic field detection via Faraday rotation. Using dielectric sensors and an optical fibre-based readout ensures minimal field perturbations compared to conductive probes and greatly limits unwanted electrical pickup between probe and recording system...
April 20, 2017: Scientific Reports
keyword
keyword
62690
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"