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Bioelectromagnetics

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https://www.readbyqxmd.com/read/29194676/extremely-high-frequency-electromagnetic-radiation-enhances-neutrophil-response-to-particulate-agonists
#1
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
#2
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
#3
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
#4
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/29149544/referees-for-bioelectromagnetics-2017
#5
EDITORIAL
(no author information available yet)
No abstract text is available yet for this article.
December 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29143352/assessment-of-exposure-to-radio-frequency-electromagnetic-fields-from-smart-utility-meters-in-gb-part-ii-numerical-assessment-of-induced-sar-within-the-human-body
#6
Muhammad R A Qureshi, Yasir Alfadhl, Xiaodong Chen, Azadeh Peyman, Myron Maslanyj, Simon Mann
Human body exposure to radiofrequency electromagnetic waves emitted from smart meters was assessed using various exposure configurations. Specific energy absorption rate distributions were determined using three anatomically realistic human models. Each model was assigned with age- and frequency-dependent dielectric properties representing a collection of age groups. Generalized exposure conditions involving standing and sleeping postures were assessed for a home area network operating at 868 and 2,450 MHz...
November 16, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29125197/iei-emf-provocation-case-studies-a-novel-approach-to-testing-sensitive-individuals
#7
Adam Verrender, Sarah P Loughran, Vitas Anderson, Lena Hillert, G James Rubin, Gunnhild Oftedal, Rodney J Croft
The etiology of Idiopathic Environmental Intolerance attributed to Electromagnetic Fields (IEI-EMF) is controversial. While the majority of studies have indicated that there is no relationship between EMF exposure and symptoms reported by IEI-EMF sufferers, concerns about methodological issues have been raised. Addressing these concerns, the present experiment was designed as a series of individual case studies to determine whether there is a relationship between radiofrequency-electromagnetic field (RF-EMF) exposure and an IEI-EMF individual's self-reported symptoms...
November 10, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29125193/exposure-to-a-specific-time-varying-electromagnetic-field-inhibits-cell-proliferation-via-camp-and-erk-signaling-in-cancer-cells
#8
Carly A Buckner, Alison L Buckner, Stan A Koren, Michael A Persinger, Robert M Lafrenie
Exposure to specific electromagnetic field (EMF) patterns can affect a variety of biological systems. We have shown that exposure to Thomas-EMF, a low-intensity, frequency-modulated (25-6 Hz) EMF pattern, inhibited growth and altered cell signaling in malignant cells. Exposure to Thomas-EMF for 1 h/day inhibited the growth of malignant cells including B16-BL6 mouse melanoma cells, MDA-MB-231, MDA-MB-468, BT-20, and MCF-7 human breast cancer and HeLa cervical cancer cells but did not affect non-malignant cells...
November 10, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29119574/effects-of-emf-emissions-from-undersea-electric-cables-on-coral-reef-fish
#9
Audie K Kilfoyle, Robert F Jermain, Manhar R Dhanak, Joseph P Huston, Richard E Spieler
The objective of this study was to determine if electromagnetic field (EMF) emissions from undersea power cables impacted local marine life, with an emphasis on coral reef fish. The work was done at the South Florida Ocean Measurement Facility of Naval Surface Warfare Center in Broward County, Florida, which has a range of active undersea detection and data transmission cables. EMF emissions from a selected cable were created during non-destructive visual fish surveys on SCUBA. During surveys, the transmission of either alternating current (AC), direct current (DC), or none (OFF) was randomly initiated by the facility at a specified time...
November 9, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29105885/emp-induced-bbb-disruption-enhances-drug-delivery-to-glioma-and-increases-treatment-efficacy-in-rats
#10
Kangchu Li, Keying Zhang, Shenglong Xu, Xiaowu Wang, Yongchun Zhou, Yan Zhou, Peng Gao, Jiajin Lin, Guirong Ding, Guozhen Guo
Chemotherapy on gliomas is not satisfactorily efficient because the presence of blood-brain barriers (BBB) leads to inadequate exposure of tumor cells to administered drugs. In order to facilitate chemotherapeutics to penetrate BBB and increase the treatment efficacy of gliomas, electromagnetic pulse (EMP) was applied and the 1-(2-Chlorethyl)-cyclohexyl-nitrosourea (CCNU) lomustine concentration in tumor tissue, tumor size, tumor apoptosis, and side effects were measured in glioma-bearing rat model. The results showed that EMP exposure could enhance the delivery of CCNU to tumor tissue, facilitate tumor apoptosis, and inhibit tumor growth without obvious side effects...
November 6, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29092489/influence-of-the-on-line-elf-emf-stimulation-on-the-electrophysiological-properties-of-the-rat-hippocampal-ca1-neurons-in-vitro
#11
Yu Zheng, Wei Ma, Lei Dong, Jun-Rong Dou, Yang Gao, Jing Xue
The extremely low frequency electromagnetic fields (ELF-EMFs) have been shown to have an environmentally negative effect on humans' health; however, its treatment effect is beneficial for patients suffering from neurological disorders. Despite this success, the application of ELF-EMF has exceeded in the understanding of its internal mechanism. Recently, it was found that on-line magnetic stimulation may offer advantages over off-line magnetic exposure and has proven to be effective in activating the prefrontal cortex pyramidal neurons in vitro...
October 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/29060830/the-visible-human-project-male-cad-based-computational-phantom-and-its-use-in-bioelectromagnetic-simulations
#12
G M Noetscher, A T Htet, N D Maino, P A Lacroix
Use of numerical simulation tools to provide qualitative estimates on electromagnetic safety, characterize antenna performance for WBAN applications and facilitate ground breaking research on diagnostic and therapeutic bioelectrical solutions has steadily grown over the past twenty years. However, the accuracy and applicability of such tools are directly proportional to the fidelity of the model used during the simulation. This paper describes the construction of a new CAD based male computational phantom, the Visible Human Project (VHP)-Male model, suitable for use in major commercial electromagnetics simulation packages...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29027733/improvement-of-wheat-seed-vitality-by-dielectric-barrier-discharge-plasma-treatment
#13
Qiao Guo, Yiran Meng, Guangzhou Qu, Tiecheng Wang, Fengning Yang, Dongli Liang, Shibin Hu
Influences of discharge voltage on wheat seed vitality were investigated in a dielectric barrier discharge (DBD) plasma system at atmospheric pressure and temperature. Six different treatments were designed, and their discharge voltages were 0.0, 9.0, 11.0, 13.0, 15.0, and 17.0 kV, respectively. Fifty seeds were exposed to the DBD plasma atmosphere with an air flow rate of 1.5 L min(-1) for 4 min in each treatment, and then the DBD plasma-treated seeds were prepared for germination in several Petri dishes...
October 13, 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
#14
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/28990199/the-epigenetic-component-of-the-brain-response-to-electromagnetic-stimulation-in-parkinson-s-disease-patients-a-literature-overview
#15
REVIEW
Claudia Consales, Caterina Merla, Carmela Marino, Barbara Benassi
Modulations of epigenetic machinery, namely DNA methylation pattern, histone modification, and non-coding RNAs expression, have been recently included among the key determinants contributing to Parkinson's Disease (PD) aetiopathogenesis and response to therapy. Along this line of reasoning, a set of experimental findings are highlighting the epigenetic-based response to electromagnetic (EM) therapies used to alleviate PD symptomatology, mainly Deep Brain Stimulation (DBS) and Transcranial Magnetic Stimulation (TMS)...
October 9, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28940601/suppression-of-arabidopsis-flowering-by-near-null-magnetic-field-is-mediated-by-auxin
#16
Chunxiao Xu, Yuxia Zhang, Yang Yu, Yue Li, Shufeng Wei
We previously found that flowering of Arabidopsis was suppressed by near-null magnetic field, which was related to cryptochrome. Auxin plays an important role in Arabidopsis flowering. To test whether auxin is involved in the suppression of Arabidopsis flowering by near-null magnetic field, we detected auxin level and expressions of auxin transport and signaling genes in wild-type Arabidopsis plants and cryptochrome double mutant, cry1/cry2, grown in near-null magnetic field. We found that indole-3-acetic acid (IAA) level in roots of wild-type plants in near-null magnetic field was significantly increased compared with the local geomagnetic field control, while IAA level in rosettes of 33-day-old wild-type plants in near-null magnetic field was significantly lower than the control...
September 20, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28898435/wearable-slot-antenna-at-2-45%C3%A2-ghz-for-off-body-radiation-analysis-of-efficiency-frequency-shift-and-body-absorption
#17
Marta Fernandez, Hugo G Espinosa, David V Thiel, Amaia Arrinda
The interaction of body-worn antennas with the human body causes a significant decrease in antenna efficiency and a shift in resonant frequency. A resonant slot in a small conductive box placed on the body has been shown to reduce these effects. The specific absorption rate is less than international health standards for most wearable antennas due to small transmitter power. This paper reports the linear relationship between power absorbed by biological tissues at different locations on the body and radiation efficiency based on numerical modeling (r = 0...
September 12, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28840936/effects-of-static-magnetic-fields-on-the-enteropathogenic-escherichia-coli
#18
María A Quiñones-Peña, Gustavo Tavizon, José L Puente, Claudia Martínez-Anaya, Ulises Hernández-Chiñas, Carlos A Eslava
This study reports the effects of exposing cells of the prototypical enteropathogenic Escherichia coli (EPEC) strain E2348/69 to static magnetic fields (SMF) of varying intensities to observe their capacity to autoaggregate and the effect on cell adherence. The results showed that bacteria exposure over the course of 5 min to an intensity of 53 mT reduced autoaggregation by 28%. However, with intensities of up to 100 mT with the same exposure time, bacteria autoaggregation was reduced by approximately 50%; and after 30 min at the same intensity, it was indistinguishable from that observed in a non-autoaggregative strain...
August 25, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28836692/forced-acoustic-oscillations-of-biological-cell
#19
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
https://www.readbyqxmd.com/read/28836682/millimeter-wave-emissivity-as-a-metric-for-the-non-contact-diagnosis-of-human-skin-conditions
#20
Amani Yousef Owda, Neil Salmon, Stuart William Harmer, Sergiy Shylo, Nicholas John Bowring, Nacer Ddine Rezgui, Mamta Shah
A half-space electromagnetic model of human skin over the band 30-300 GHz was constructed and used to model radiometric emissivity. The model showed that the radiometric emissivity rose from 0.4 to 0.8 over this band, with emission being localized to a layer approximately one millimeter deep in the skin. Simulations of skin with differing water contents associated with psoriasis, eczema, malignancy, and thermal burn wounds indicated radiometry could be used as a non-contact technique to detect and monitor these conditions...
October 2017: Bioelectromagnetics
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