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Bioelectromagnetics

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https://www.readbyqxmd.com/read/29446477/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
#1
Isil Ocal, Mehmet B Yilmaz, Sabriye Kocaturk-Sel, Turan Tufan, Mehmet A Erkoc, Gamze Comertpay, Hale Oksuz, Esma D Barc
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 Kir6.1 and Kir6.2 subunit expressions of ATP-sensitive potassium channels (K ATP ) in aortas of controlled-diabetic and non-controlled diabetic rats...
February 15, 2018: Bioelectromagnetics
https://www.readbyqxmd.com/read/29418010/tissue-models-for-rf-exposure-evaluation-at-frequencies-above-6%C3%A2-ghz
#2
REVIEW
Marvin C Ziskin, Stanislav I Alekseev, Kenneth R Foster, Quirino Balzano
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)...
February 8, 2018: Bioelectromagnetics
https://www.readbyqxmd.com/read/29393520/magnetic-field-pattern-synthesis-and-its-application-in-targeted-drug-delivery-design-and-implementation
#3
Amirhossein Hajiaghajani, Ali Abdolali
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. Realization of each spatial frequency was investigated by a set of elliptical coils. Therefore, it is shown that the desired pattern was synthesized by simultaneous use of coil sets...
February 2, 2018: Bioelectromagnetics
https://www.readbyqxmd.com/read/29350408/calibration-and-non-orthogonality-correction-of-three-axis-hall-sensors-for-the-monitoring-of-mri-workers-exposure-to-static-magnetic-fields
#4
Antoine Delmas, Lamia Belguerras, Nicolas Weber, Freddy Odille, Cédric Pasquier, Jacques Felblinger, Pierre-André Vuissoz
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. One design for a low-cost, compact MF exposure monitor (« MR exposimeter ») uses a set of three orthogonally assembled Hall sensors...
January 19, 2018: Bioelectromagnetics
https://www.readbyqxmd.com/read/29251353/uniform-magnetic-targeting-of-magnetic-particles-attracted-by-a-new-ferromagnetic-biological-patch
#5
Ning Pei, Lanlan Cai, Kai Yang, Jiaqi Ma, Yongyong Gong, Qixin Wang, Zheyong Huang
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. The local MF near the MBP varied with the uniform MF and shape of the MBP. Therefore, not only could the accumulation of paramagnetic particles be adjusted by controlling the strength of the uniform MF, but also the distribution of the paramagnetic particles could be improved with the different shape of the MBP...
December 18, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29194676/extremely-high-frequency-electromagnetic-radiation-enhances-neutrophil-response-to-particulate-agonists
#6
Irina I Vlasova, Elena V Mikhalchik, Alexandr A Gusev, Nadezhda G Balabushevich, Sergey A Gusev, Konstantin D Kazarinov
The growing use of extremely high-frequency electromagnetic radiation (EHF EMR) in information and communication technology and in biomedical applications has raised concerns regarding the potential biological impact of millimeter waves (MMWs). Here, we elucidated the effects of MMW radiation on neutrophil activation induced by opsonized zymosan or E. coli in whole blood ex vivo. After agonist addition to blood, two samples were prepared. A control sample was incubated at ambient conditions without any treatment, and a test sample was exposed to EHF EMR (32...
November 30, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29171064/analysis-of-ear-side-of-mobile-phone-use-in-the-general-population-of-japan
#7
Yasuto Sato, Noriko Kojimahara, Masao Taki, Naohito Yamaguchi
This study aimed to clarify the distribution of the ear side of mobile phone use in the general population of Japan and clarify what factors are associated with the ear side of mobile phone use. Children at elementary and junior high schools (n = 2,518) and adults aged ≥20 years (n = 1,529) completed an Internet-based survey. Data were subjected to a logistic regression analysis. In children, due to the tendency to use the dominant hand, we analyzed the factors associated with the use of right ear in right-handed people...
November 24, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29171038/effects-of-exposure-to-electromagnetic-field-from-915%C3%A2-mhz-radiofrequency-identification-system-on-circulating-blood-cells-in-the-healthy-adult-rat
#8
Hye Sun Kim, Jae Sung Park, Yeung-Bae Jin, Hyung Do Choi, Jong Hwa Kwon, Jeong-Ki Pack, Nam Kim, Young Hwan Ahn
We investigated whether exposure to the 915 MHz radiofrequency identification (RFID) signal affected circulating blood cells in rats. Sprague-Dawley rats were exposed to RFID at a whole-body specific absorption rate of 2 W/kg for 8 h per day, 5 days per week, for 2 weeks. Complete blood counts were performed after RFID exposure, and the CD4(+) /CD8(+) ratio was determined by flow cytometry. The number of red blood cells (RBCs) and the values of hemoglobin, hematocrit, and RBC indices were increased in the RFID-exposed group compared with those in the cage-control and sham-exposed groups (P < 0...
November 24, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29171034/retrospective-estimation-of-the-electric-and-magnetic-field-exposure-conditions-in-in-vitro-experimental-reports-reveal-considerable-potential-for-uncertainty
#9
Lucas A Portelli, Karsten Falldorf, György Thuróczy, Jan Cuppen
Experiments on cell cultures exposed to extremely low frequency (ELF, 3-300 Hz) magnetic fields are often subject to multiple sources of uncertainty associated with specific electric and magnetic field exposure conditions. Here we systemically quantify these uncertainties based on exposure conditions described in a group of bioelectromagnetic experimental reports for a representative sampling of the existing literature. The resulting uncertainties, stemming from insufficient, ambiguous, or erroneous description, design, implementation, or validation of the experimental methods and systems, were often substantial enough to potentially make any successful reproduction of the original experimental conditions difficult or impossible...
November 24, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29350413/occupational-exposure-to-extremely-low-frequency-magnetic-fields-and-the-risk-of-als-a-systematic-review-and-meta-analysis
#10
Anke Huss, Susan Peters, Roel Vermeulen
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. Summary relative risks (RR) or odds ratios (OR) were obtained with random effect meta-analysis, and analyses were stratified by type of exposure assessment...
February 2018: Bioelectromagnetics
https://www.readbyqxmd.com/read/29251361/pulsed-electromagnetic-field-improves-subchondral-bone-microstructure-in-knee-osteoarthritis-rats-through-a-wnt-%C3%AE-catenin-signaling-associated-mechanism
#11
Xiaotian Yang, Hongchen He, Qiang Gao, Chengqi He
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). OA was induced (OA and PEMF groups) by injecting 0...
February 2018: Bioelectromagnetics
https://www.readbyqxmd.com/read/29277962/issue-information-page
#12
(no author information available yet)
No abstract text is available yet for this article.
January 2018: Bioelectromagnetics
https://www.readbyqxmd.com/read/29149544/referees-for-bioelectromagnetics-2017
#13
EDITORIAL
(no author information available yet)
No abstract text is available yet for this article.
December 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29149543/issue-information-page
#14
(no author information available yet)
No abstract text is available yet for this article.
December 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29044567/response-to-the-comments-on-analysis-of-mobile-phone-use-among-young-patients-with-brain-tumors-in-japan
#15
Yasuto Sato, Noriko Kojimahara, Naohito Yamaguchi
No abstract text is available yet for this article.
December 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29023859/effects-of-extremely-low-frequency-magnetic-field-on-the-development-of-tolerance-to-the-analgesic-effect-of-morphine-in-rats
#16
Majid Jadidi, Mahfouzeh Sadat Khatami, Fatemeh Mohammad-Pour, Afsaneh Bandavi, Ali Rashidy-Pour, Abbas Ali Vafaei, Abbas Ali Taherian, Hossein Miladi-Gorji
This study examined the effects of low frequency magnetic field (MF) on tolerance to analgesic effect of morphine in rats. Rats were made tolerant to morphine by injecting morphine (10 mg/kg, s) once daily for 8 consecutive days. Rats were simultaneously exposed to an MF (50 Hz at 1, 50, and 100 μT for 30 min) before, immediately, or 30 min after injection of morphine, and also exposed to a 0.5, 6, 12, and 30 Hz at 100 μT for 30 min before injection of morphine. The percentage of maximum possible effect of morphine (% MPE) was measured on the 1st, 4th, and 8th days by hot plate test...
December 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28980326/comments-on-analysis-of-mobile-phone-use-among-young-patients-with-brain-tumors-in-japan
#17
Seyed Mohammad Javad Mortazavi
No abstract text is available yet for this article.
December 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28881024/responses-to-comments-on-assessment-of-polarization-dependence-of-body-shadow-effect-on-dosimetry-measurements-in-the-2-4%C3%A2-ghz-band
#18
Silvia de Miguel-Bilbao, Victoria Ramos, Juan Blas
No abstract text is available yet for this article.
December 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28881020/comments-on-assessment-of-polarization-dependence-of-body-shadow-effect-on-dosimetry-measurements-in-2-4ghz-band
#19
Arno Thielens, Luc Martens, Wout Joseph
No abstract text is available yet for this article.
December 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28836692/forced-acoustic-oscillations-of-biological-cell
#20
Aleksandr V Kharlanov
This article considers the possibility of excitation of acoustic oscillations in a cell by electromagnetic waves. In this process, not only the frequency but also the length of a wave is of great importance. It is also reported that the pulse signal can be more effective than harmonic signal, and the pulse length is not essential. In accordance with this fact, it is possible to explain the biological effects of electromagnetic waves and to develop new medical electronic devices. Bioelectromagnetics. 38:613-617, 2017...
December 2017: Bioelectromagnetics
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