Acute effects of radiofrequency electromagnetic field emitted by mobile phone on brain function
Due to its attributes, characteristics, and technological resources, the mobile phone (MP) has become one of the most commonly used communication devices. Historically, ample evidence has ruled out the substantial short‐term impact of radiofrequency electromagnetic field (RF‐EMF) emitted by MP on human cognitive performance. However, more recent evidence suggests potential harmful effects associated with MP EMF exposure. The aim of this review is to readdress the question of whether the effect of MP EMF exposure on brain function should be reopened. We strengthen our argument focusing on recent neuroimaging and electro...
Source: Bioelectromagnetics - April 20, 2017 Category: Radiology Authors: Jun Zhang, Alexander Sumich, Grace Y. Wang Tags: Review Source Type: research
Issue Information ‐ Page
(Source: Bioelectromagnetics)
Source: Bioelectromagnetics - April 4, 2017 Category: Radiology Tags: Issue Information ‐ Page Source Type: research
Extremely low ‐frequency electromagnetic field exposure enhances inflammatory response and inhibits effect of antioxidant in RAW 264.7 cells
In recent years, there has been a dramatic increase in the number and variety of electronic devices that emit electromagnetic waves. Because people live and work in close proximity to these pieces of electrical equipment, there is growing concern surrounding the destruction of homeostasis by electromagnetic field exposure. In the present study, the effects of 60 Hz 0.8 mT extremely low‐frequency electromagnetic fields (ELF‐EMF) on a macrophage cell line (RAW 264.7) were examined. Under defined ELF‐EMF exposure conditions, the production of nitric oxide and pro‐inflammatory cytokines, TNF‐α, IL‐1β, and IL...
Source: Bioelectromagnetics - March 30, 2017 Category: Radiology Authors: Soo Jeong Kim, Ye Won Jang, Kyung Eun Hyung, Da Kyoung Lee, Kee Hyeob Hyun, Seung Hwarn Jeong, Kyung Hoon Min, Wonku Kang, Ji Hoon Jeong, So ‐Young Park, Kwang Woo Hwang Tags: Research Article Source Type: research
Extremely low ‐frequency electromagnetic field induces neural differentiation of hBM‐MSCs through regulation of (Zn)‐metallothionein‐3
Extremely low‐frequency electromagnetic field (ELFEMF) can stimulate neural differentiation in human bone marrow‐derived mesenchymal cells (hBM‐MSCs), and this provides an opportunity for research on neurodegenerative diseases such as Alzheimer's disease (AD). Metallothionein‐3 (MT3), an isoform of the metal‐binding proteins, metallothioneins, involved in maintaining intracellular zinc (Zn) homeostasis and the deregulation of zinc homeostasis, has separately been implicated in AD. Here, we investigated the effect of ELFEMF‐induced neural differentiation of hBM‐MSCs on Zn‐MT3 homeostatic interaction. Exposur...
Source: Bioelectromagnetics - March 29, 2017 Category: Radiology Authors: Anastasia Rosebud Aikins, Sung ‐Won Hong, Hyun‐Jung Kim, Cheol‐Ho Yoon, Joo‐Hee Chung, MiJung Kim, Chan‐Wha Kim Tags: Research Article Source Type: research
Effect of adverse environmental conditions and protective clothing on temperature rise in a human body exposed to radiofrequency electromagnetic fields
This study considers the computationally determined thermal profile of a finely discretized, heterogeneous human body model, simulating a radiofrequency electromagnetic field (RF‐EMF) worker wearing protective clothing subject to RF‐EMF exposure, and subject to various environmental conditions including high ambient temperature and high humidity, with full thermoregulatory mechanisms in place. How the human body responds in various scenarios was investigated, and the information was used to consider safety limits in current international RF‐EMF safety guidelines and standards. It was found that different environmenta...
Source: Bioelectromagnetics - March 25, 2017 Category: Radiology Authors: Stephen M. Moore, Robert L. McIntosh, Steve Iskra, Alireza Lajevardipour, Andrew W. Wood Tags: Research Article Source Type: research
Analysis of mobile phone use among young patients with brain tumors in Japan
The purpose of this study was to clarify ownership and usage of mobile phones among young patients with brain tumors in Japan. The subjects of this study were patients with brain tumors diagnosed between 2006 and 2010 who were between the ages of 6 and 18 years. The target population for the analysis was 82 patients. Patients were divided into two groups: 16 patients who were mobile phone owners 1 year before diagnosis, and 66 patients who did not own mobile phones (non‐owners). Using data on the mobile phone ownership rate obtained from three general‐population surveys, we calculated the expected number of mobile phon...
Source: Bioelectromagnetics - March 24, 2017 Category: Radiology Authors: Yasuto Sato, Noriko Kojimahara, Naohito Yamaguchi Tags: Research Article Source Type: research
Exposure to electromagnetic fields from smart utility meters in GB; part I) laboratory measurements
Laboratory measurements of electric fields have been carried out around examples of smart meter devices used in Great Britain. The aim was to quantify exposure of people to radiofrequency signals emitted from smart meter devices operating at 2.4 GHz, and then to compare this with international (ICNIRP) health‐related guidelines and with exposures from other telecommunication sources such as mobile phones and Wi‐Fi devices. The angular distribution of the electric fields from a sample of 39 smart meter devices was measured in a controlled laboratory environment. The angular direction where the power density was greate...
Source: Bioelectromagnetics - March 23, 2017 Category: Radiology Authors: Azadeh Peyman, Darren Addison, Terry Mee, Cristian Goiceanu, Myron Maslanyj, Simon Mann Tags: Research Article Source Type: research
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(Source: Bioelectromagnetics)
Source: Bioelectromagnetics - March 5, 2017 Category: Radiology Tags: Issue Information ‐ Page Source Type: research
Effects of local vibration and pulsed electromagnetic field on bone fracture: A comparative study
The effectiveness of various therapeutic methods on bone fracture has been demonstrated in several studies. In the present study, we tried to evaluate the effect of local low‐magnitude, high‐frequency vibration (LMHFV) on rat tibia fracture in comparison with pulsed electromagnetic fields (PEMF) during the healing process. Mid‐diaphysis tibiae fractures were induced in 30 Sprague‐Dawley rats. The rats were assigned into groups such as control (CONT), LMHFV (15 min/day, 7 days/week), and PEMF (3.5 h/day, 7 days/week) for a three‐week treatment. Nothing was applied to control group. Radiographs, serum osteocalc...
Source: Bioelectromagnetics - February 24, 2017 Category: Radiology Authors: Hakk ı Murat Bilgin, Ferhat Çelik, Mehmet Gem, Veysi Akpolat, İsmail Yıldız, Aysun Ekinci, Mehmet Siraç Özerdem, Selçuk Tunik Tags: Research Article Source Type: research
Comments on Vladimir Binhi and Frank Prato's a physical mechanism of magnetoreception: Extension and analysis
(Source: Bioelectromagnetics)
Source: Bioelectromagnetics - February 20, 2017 Category: Radiology Authors: Frank Barnes, Ben Greenebaum Tags: Comment Source Type: research
Response to comments by Frank Barnes and Ben Greenebaum on “a physical mechanism of magnetoreception: extension and analysis”
(Source: Bioelectromagnetics)
Source: Bioelectromagnetics - January 31, 2017 Category: Radiology Authors: Frank S. Prato, Vladimir N. Binhi Tags: Response Source Type: research
Radiofrequency exposure near an attocell as part of an ultra ‐high density access network
In the future, wireless radiofrequency (RF) telecommunications networks will provide users with gigabit‐per‐second data rates. Therefore, these networks are evolving toward hybrid networks, which will include commonly used macro‐ and microcells in combination with local ultra‐high density access networks consisting of so‐called attocells. The use of attocells requires a proper compliance assessment of exposure to RF electromagnetic radiation. This paper presents, for the first time, such a compliance assessment of an attocell operating at 3.5 GHz with an input power of 1 mW, based on both root‐mean‐square...
Source: Bioelectromagnetics - January 31, 2017 Category: Radiology Authors: Arno Thielens, G ünter Vermeeren, Olivier Caytan, Guy Torfs, Piet Demeester, Johan Bauwelinck, Hendrik Rogier, Luc Martens, Wout Joseph Tags: Research Article Source Type: research
Configuration ‐dependent variability of the effect of an electric field on the plasma glucocorticoid level in immobilized mice
In this study, we investigated the reproducibility of the suppressive effect induced by EF exposure by varying the voltage and distance between the electrodes (0.5 kV/50 mm, 1 kV/100 mm, 2 kV/200 mm) and comparing the effects on the plasma GC level. In addition, the effect of mice being in contact with the lower electrode or not was compared at 1 kV/100 mm. Immobilization‐induced GC levels were significantly decreased in mice exposed to an EF at 1 kV/100 mm for 60 min (P < 0.01), but not in mice exposed to 0.5 kV/50 mm or 2 kV/200 mm. Furthermore, the suppressive effect of the 1 kV/...
Source: Bioelectromagnetics - January 31, 2017 Category: Radiology Authors: Takuya Hori, Noboru Inoue, Hiroshi Suzuki, Shinji Harakawa Tags: Research Article Source Type: research
Magnetic resonance examination of patients with implanted pacemakers: An evaluation of magnetic field gradients slew rate
Performing safe magnetic resonance imaging of patients with “MR conditional” pacemakers needs to meet some specific restrictions. One of these is related to the slew rate (SR) parameter, defined as the speed of magnetic field gradients rising up to their required strengths. Unfortunately, SR values cannot be easily checked at the tomograph console. The present work provides an accurate evaluation of the maximum SR for a set of widely used clinical MR sequences. The experimental approach is based on indirect measurement of time‐varying spatial magnetic field gradients. All MR sequences evaluated match safety SR prescr...
Source: Bioelectromagnetics - January 31, 2017 Category: Radiology Authors: Diego Trevisan, Gloria Miori, Armando Correale, Davide Libralon Tags: Brief Communication Source Type: research
Time ‐dependent changes in the suppressive effect of electric field exposure on immobilization‐induced plasma glucocorticoid increase in mice
We recently reported that increased glucocorticoid (GC) levels in immobilized mice were suppressed by exposure to a 50‐Hz electric field (EF) in kV/m‐dependent and exposure duration‐dependent manners. Here, we characterized time‐dependent changes in the effect of EF exposure in immobilized mice. Using control, EF‐alone, immobilization‐alone, and co‐treated groups, plasma GC levels, and blood properties were first measured (0–60 min) to observe changes induced by each treatment and measured again (60–120 min) to assess recovery from each treatment. The 50‐Hz, 10‐kV/m EF was formed in a parallel pla...
Source: Bioelectromagnetics - January 28, 2017 Category: Radiology Authors: Shinji Harakawa, Takuya Hori, Noboru Inoue, Hiroshi Suzuki Tags: Research Article Source Type: research
