Impact of 60 ‐GHz millimeter waves on stress and pain‐related protein expression in differentiating neuron‐like cells
Millimeter waves (MMW) will be increasingly used for future wireless telecommunications. Previous studies on skin keratinocytes showed that MMW could impact the mRNA expression of Transient Receptor Potential cation channel subfamily Vanilloid, member 2 (TRPV2). Here, we investigated the effect of MMW exposure on this marker, as well as on other membrane receptors such as Transient Receptor Potential cation channel subfamily Vanilloid, member 1 (TRPV1) and purinergic receptor P2X, ligand‐gated ion channel, 3 (P2 × 3). We exposed the Neuroscreen‐1 cell line (a PC12 subclone), in order to evaluate if acute MMW expos...
Source: Bioelectromagnetics - June 30, 2016 Category: Radiology Authors: Alexis J. Haas, Yann Le Page, Maxim Zhadobov, Artem Boriskin, Ronan Sauleau, Yves Le Dr éan Tags: Research Article Source Type: research
Pre ‐sowing static magnetic field treatment for improving water and radiation use efficiency in chickpea (Cicer arietinum L.) under soil moisture stress
Soil moisture stress during pod filling is a major constraint in production of chickpea (Cicer arietinum L.), a fundamentally dry land crop. We investigated effect of pre‐sowing seed priming with static magnetic field (SMF) on alleviation of stress through improvement in radiation and water use efficiencies. Experiments were conducted under greenhouse and open field conditions with desi and kabuli genotypes. Seeds exposed to SMF (strength: 100 mT, exposure: 1 h) led to increase in root volume and surface area by 70% and 65%, respectively. This enabled the crop to utilize 60% higher moisture during the active growth p...
Source: Bioelectromagnetics - June 30, 2016 Category: Radiology Authors: Nilimesh Mridha, Sudipta Chattaraj, Debashis Chakraborty, Anjali Anand, Pramila Aggarwal, Shantha Nagarajan Tags: Research Article Source Type: research
A new theoretical model for transmembrane potential and ion currents induced in a spherical cell under low frequency electromagnetic field
Time‐varying electromagnetic fields (EMF) can induce some physiological effects in neuronal tissues, which have been explored in many applications such as transcranial magnetic stimulation. Although transmembrane potentials and induced currents have already been the subjects of many theoretical studies, most previous works about this topic are mainly completed by utilizing Maxwell's equations, often by solving a Laplace equation. In previous studies, cells were often considered to be three‐compartment models with different electroconductivities in different regions (three compartments are often intracellular regions, m...
Source: Bioelectromagnetics - June 30, 2016 Category: Radiology Authors: Yu Zheng, Yang Gao, Ruijuan Chen, Huiquan Wang, Lei Dong, Junrong Dou Tags: Research Article Source Type: research
Biological responses of human solid tumor cells to X‐ray irradiation within a 1.5‐Tesla magnetic field generated by a magnetic resonance imaging–linear accelerator
In conclusion, MF within the MRL does not seem to affect in vitro tumor radioresponsiveness as compared with a conventional Linac. Bioelectromagnetics. 2016;9999:1–10. © 2016 Wiley Periodicals, Inc. (Source: Bioelectromagnetics)
Source: Bioelectromagnetics - June 30, 2016 Category: Radiology Authors: Li Wang, Stan Jelle Hoogcarspel, Zhifei Wen, Marco van Vulpen, David P. Molkentine, Jan Kok, Steven H. Lin, Roel Broekhuizen, Kie‐Kian Ang, Niels Bovenschen, Bas W. Raaymakers, Steven J. Frank Tags: Research Article Source Type: research
Comparison of average global exposure of population induced by a macro 3G network in different geographical areas in France and Serbia
This article is the first thorough study of average population exposure to third generation network (3G)‐induced electromagnetic fields (EMFs), from both uplink and downlink radio emissions in different countries, geographical areas, and for different wireless device usages. Indeed, previous publications in the framework of exposure to EMFs generally focused on individual exposure coming from either personal devices or base stations. Results, derived from device usage statistics collected in France and Serbia, show a strong heterogeneity of exposure, both in time, that is, the traffic distribution over 24 h was found h...
Source: Bioelectromagnetics - June 30, 2016 Category: Radiology Authors: Yuanyuan Huang, Nadège Varsier, Stevan Niksic, Enis Kocan, Milica Pejanovic‐Djurisic, Milica Popovic, Mladen Koprivica, Aleksandar Neskovic, Jelena Milinkovic, Azeddine Gati, Christian Person, Joe Wiart Tags: Research Article Source Type: research
Static magnetic field treatment of seeds improves carbon and nitrogen metabolism under salinity stress in soybean
The effectiveness of magnetopriming was assessed for alleviation of salt‐induced adverse effects on soybean growth. Soybean seeds were pre‐treated with static magnetic field (SMF) of 200 mT for 1 h to evaluate the effect of magnetopriming on growth, carbon and nitrogen metabolism, and yield of soybean plants under different salinity levels (0, 25, and 50 mM NaCl). The adverse effect of NaCl‐induced salt stress was found on growth, yield, and various physiological attributes of soybeans. Results indicate that SMF pre‐treatment significantly increased plant growth attributes, number of root nodules, nodules, fr...
Source: Bioelectromagnetics - June 23, 2016 Category: Radiology Authors: Lokesh Baghel, Sunita Kataria, Kadur Narayan Guruprasad Tags: Research Article Source Type: research
Development and evaluation of an electromagnetic hypersensitivity questionnaire for Japanese people
This study demonstrated that the Japanese EHS questionnaire is reliable and valid, and can be used for surveillance of EHS individuals in Japan. Furthermore, based on multiple logistic regression and receiver operating characteristic analyses, we propose specific preliminary criteria for screening EHS individuals in Japan. Bioelectromagnetics. © 2016 The Authors. Bioelectromagnetics Published by Wiley Periodicals, Inc. (Source: Bioelectromagnetics)
Source: Bioelectromagnetics - June 21, 2016 Category: Radiology Authors: Sachiko Hojo, Mikiko Tokiya, Masami Mizuki, Mikio Miyata, Kumiko T. Kanatani, Airi Takagi, Naomi Tsurikisawa, Setsuko Kame, Takahiko Katoh, Takuya Tsujiuchi, Hiroaki Kumano Tags: Research Article Source Type: research
Effects of 1950 MHz W‐CDMA‐like signal on human spermatozoa
In this study, we analyzed the effects on human spermatozoa (sperm motility and kinetic variables) induced by 1 h of exposure to 1950 MHz Wideband Code Division Multiple Access (W‐CDMA)‐like EMW with specific absorption rates of either 2.0 or 6.0 W/kg, using a computer‐assisted sperm analyzer system. We also measured the percentage of 8‐hydroxy‐2′‐deoxyguanosine (8‐OHdG) positive spermatozoa with flow cytometry to evaluate damage to DNA. No significant differences were observed between the EMW exposure and the sham exposure in sperm motility, kinetic variables, or 8‐OHdG levels. We conclude that W...
Source: Bioelectromagnetics - June 11, 2016 Category: Radiology Authors: Setsu Nakatani‐Enomoto, Miho Okutsu, Satoshi Suzuki, Ryota Suganuma, Stefan Jun Groiss, Suguru Kadowaki, Hiroyuki Enomoto, Keiya Fujimori, Yoshikazu Ugawa Tags: Research Article Source Type: research
Effects of 1950 MHz W‐CDMA‐like signal on human spermatozoa
In this study, we analyzed the effects on human spermatozoa (sperm motility and kinetic variables) induced by 1 h of exposure to 1950 MHz Wideband Code Division Multiple Access (W‐CDMA)‐like EMW with specific absorption rates of either 2.0 or 6.0 W/kg, using a computer‐assisted sperm analyzer system. We also measured the percentage of 8‐hydroxy‐2′‐deoxyguanosine (8‐OHdG) positive spermatozoa with flow cytometry to evaluate damage to DNA. No significant differences were observed between the EMW exposure and the sham exposure in sperm motility, kinetic variables, or 8‐OHdG levels. We conclude that W...
Source: Bioelectromagnetics - June 10, 2016 Category: Radiology Authors: Setsu Nakatani ‐Enomoto, Miho Okutsu, Satoshi Suzuki, Ryota Suganuma, Stefan Jun Groiss, Suguru Kadowaki, Hiroyuki Enomoto, Keiya Fujimori, Yoshikazu Ugawa Tags: Research Article Source Type: research
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(Source: Bioelectromagnetics)
Source: Bioelectromagnetics - June 8, 2016 Category: Radiology Tags: Issue Information ‐ Page Source Type: research
Current densities and total contact currents during forest clearing tasks under 400 kV power lines
The objective was also to choose and analyze measurement cases, where current measurements successfully lasted the entire work period (about 30 min). Two forestry workers volunteered to perform four forest clearing tasks under 400 kV power lines. The sampling frequency of the current measurements was 1 sample/s. The maximum values of the current densities were 1.0–1.2 mA/m2 (calculated internal EFs 5.0–12.0 mV/m), and the average values were 0.2–0.4 mA/m2. The highest contact current was 167.4 μA. All measured values during forest clearing tasks were lower than basic restrictions (0.1 V/m and 0.8 V...
Source: Bioelectromagnetics - May 17, 2016 Category: Radiology Authors: Leena Korpinen, Harri Kuisti, Jarmo Elovaara Tags: Letter to the Editor Source Type: research
Current densities and total contact currents during forest clearing tasks under 400 kV power lines
The objective was also to choose and analyze measurement cases, where current measurements successfully lasted the entire work period (about 30 min). Two forestry workers volunteered to perform four forest clearing tasks under 400 kV power lines. The sampling frequency of the current measurements was 1 sample/s. The maximum values of the current densities were 1.0–1.2 mA/m2 (calculated internal EFs 5.0–12.0 mV/m), and the average values were 0.2–0.4 mA/m2. The highest contact current was 167.4 μA. All measured values during forest clearing tasks were lower than basic restrictions (0.1 V/m and 0.8 V...
Source: Bioelectromagnetics - May 17, 2016 Category: Radiology Authors: Leena Korpinen, Harri Kuisti, Jarmo Elovaara Tags: Letter to the Editor Source Type: research
Comparative dosimetry for children and rodents exposed to extremely low ‐frequency magnetic fields
We describe a method to correlate E‐fields induced by exposure to extremely low frequency magnetic fields in laboratory mice and rats during in vivo experiments to those induced in children. Four different approaches of mapping relative dose rates between humans and rodents are herein proposed and analyzed. Based on these mapping methods and volume averaging guidelines published by the International Commission on Non‐Ionizing Radiation Protection (ICNRP) in 2010, maximum and median induced field values for whole body and for tissues of children and rodents were evaluated and compared. Median induced electric fields in ...
Source: Bioelectromagnetics - May 12, 2016 Category: Radiology Authors: Yijian Gong, Myles Capstick, Clemens Dasenbrock, Maren Fedrowitz, Cesar Cobaleda, Isidro S ánchez‐García, Niels Kuster Tags: Research Article Source Type: research
Cerebral radiofrequency exposures during adolescence: Impact on astrocytes and brain functions in healthy and pathologic rat models
The widespread use of mobile phones by adolescents raises concerns about possible health effects of radiofrequency electromagnetic fields (RF EMF 900 MHz) on the immature brain. Neuro‐development is a period of particular sensitivity to repeated environmental challenges such as pro‐inflammatory insults. Here, we used rats to assess whether astrocyte reactivity, perception, and emotionality were affected by RF EMF exposures during adolescence. We also investigated if adolescent brains were more sensitive to RF EMF exposures after neurodevelopmental inflammation. To do so, we either performed 80 μg/kg intra‐perito...
Source: Bioelectromagnetics - April 30, 2016 Category: Radiology Authors: Nicolas Petitdant, Anthony Lecomte, Franck Robidel, Christelle Gamez, Kelly Blazy, Anne‐Sophie Villégier Tags: Research Article Source Type: research
Effects of extremely low frequency magnetic field on production of mannatide by α‐hemolytic Streptococcus
The effect of the extremely low frequency magnetic field (ELF‐MF) on biomass and mannatide production by α‐hemolytic Streptococcus in liquid‐state fermentation culture medium was studied during shake flask culture. Magnetic field (MF) inductions, exposure times, and exposure periods varied in a range of 0–1.5 mT, 0–16 h, and six periods of incubation time, respectively. Results showed both biomass and mannatide production increased significantly at MF induction 0.4, 0.6, and 0.9 mT and decreased at both 1.2 and 1.5 mT. Biomass increased by exposure for initial and middle stages of fermentation. Mannatide...
Source: Bioelectromagnetics - April 30, 2016 Category: Radiology Authors: Jialan Zhang, Cui Xu, Yunlei Wan, Mengxiang Gao Tags: Research Article Source Type: research
