Abstract:
:The impedance spectroscopy technique (IST) was used for studying the effect of a 0.5 T magnetic field on the electrical properties of whole human blood. A Solartron SI 1260 spectrometer was used to measure the impedance spectra of magnetic field exposed blood samples compared to non-exposed samples. An equivalent electrical circuit model, consisting in a resistance Rs in series with a parallel circuit formed by a constant phase element (CPE) and another resistance Rp, is proposed to fit the data in both cases. The experiment used 3 ml human blood samples from 160 healthy donors. A Wilcoxon matched pairs statistical test was applied to the data. The data analysis seems to show a statistically significant increase of the values of resistance Rp (Z = 5.06, P < 0.001) and capacitance CT (Z = 3.32, P < 0.001) of the blood exposed to magnetic field, by approximately 10.4% and 1.9%, respectively.
journal_name
Bioelectromagneticsjournal_title
Bioelectromagneticsauthors
Sosa M,Bernal-Alvarado J,Jiménez-Moreno M,Hernández JC,Gutiérrez-Juárez G,Vargas-Luna M,Huerta R,Villagómez-Castro JC,Palomares Pdoi
10.1002/bem.20132subject
Has Abstractpub_date
2005-10-01 00:00:00pages
564-70issue
7eissn
0197-8462issn
1521-186Xjournal_volume
26pub_type
杂志文章abstract::Several effects of power-frequency (50/60 Hz) magnetic fields (PF-MF) of weak intensity have been hypothesized in animals and humans. No valid mechanism, however, has been proposed for an interaction between PF-MF and biological tissues and living beings at intensities relevant to animal and human exposure. Here we pr...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20568
更新日期:2010-07-01 00:00:00
abstract::Sixteen pregnant Holstein heifers weighing 521 +/- 46 kg, at 3.3 +/- 0.7 months of gestation and 2.2 +/- 2.0 months of age were confined to wooden metabolism cages and were exposed to a vertical electric field (EF) of 10.0 +/- 0.4 kV/m and an artificial light cycle of 12 h light-12 h dark. The heifers were divided int...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20020
更新日期:2004-05-01 00:00:00
abstract::Digital cellular telephones using the GSM (Global System for Mobile Communication) transmit information in bursts of microwaves. This pulsed transmitting mode causes the battery current and currents in the electronics of the apparatus to be pulsed. These pulsed currents produce corresponding pulsed magnetic fields nea...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:
更新日期:1997-01-01 00:00:00
abstract::In spite of rapid worldwide increase in mobile phone use and public concerns about associated potential health effects, little is known about patterns of mobile phone ownership and use in the general population and among children. In April 2005, we conducted a survey of mobile phone ownership and use among fourth grad...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20270
更新日期:2007-05-01 00:00:00
abstract::To investigate the ability of prokaryotic microorganisms to activate strategies in adapting themselves to the environmental stress induced by exposure to extremely low frequency electromagnetic fields (ELF-EMF), cultures of Escherichia coli ATCC 700926 exposed at 50 Hz EMF (0.1, 0.5, 1.0 mT), and the respective sham-e...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20391
更新日期:2008-05-01 00:00:00
abstract::The effect of 1 Hz, 30 mT pulsed magnetic fields on young adult rat femoral metaphyseal bone thickness was assessed. Ten same litter, female Wistar rats were studied; five of them underwent 30 min magnetic stimulation sessions for 20 consecutive days. The anterior and posterior cortical, as well as trabecular bone tra...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20396
更新日期:2008-07-01 00:00:00
abstract::The effects of an extremely low frequency (ELF) magnetic field on the sex hormones and other fertility parameters of adult male Sprague-Dawley rats were investigated. Adult male rats were exposed to a 50 Hz sinusoidal magnetic field at approximately 25 microT (rms) for 18 consecutive weeks. There were no significant e...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20186
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20235
更新日期:2006-10-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.10036
更新日期:2002-09-01 00:00:00
abstract::Pulsed electromagnetic fields (PEMF) have been proven to be effective for promoting bone mass and regulating bone turnover both experimentally and clinically. However, the exact mechanisms for the regulation of PEMF on osteoclastogenesis as well as optical exposure parameters of PEMF on inhibiting osteoclastic activit...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.22070
更新日期:2017-12-01 00:00:00
abstract::Studies have evaluated the electroencephalography (EEG) of humans and laboratory animals during and after Radiofrequency (RF) exposures. Effects of RF exposure on the blood-brain barrier (BBB) have been generally accepted for exposures that are thermalizing. Low level exposures that report alterations of the BBB remai...
journal_title:Bioelectromagnetics
pub_type: 杂志文章,评审
doi:10.1002/bem.10179
更新日期:2003-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250090402
更新日期:1988-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21901
更新日期:2015-04-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250080108
更新日期:1987-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章,meta分析
doi:10.1002/1521-186x(2001)22:5+<::aid-bem1026>3.3.co;
更新日期:2001-01-01 00:00:00
abstract::The present article reviews the basic principles of a new approach to the characterization of pulmonary disease. This approach is based on the unique nuclear magnetic resonance (NMR) properties of the lung and combines experimental measurements (using specially developed NMR techniques) with theoretical simulations. T...
journal_title:Bioelectromagnetics
pub_type: 杂志文章,评审
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更新日期:1999-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250050109
更新日期:1984-01-01 00:00:00
abstract::The aim of the present study was to investigate possible neurophysiological effects of intermittent 15 sec on/off cycle, 60 Hz, 10 microT magnetic field exposure on patients with perceived "electromagnetic hypersensitivity" (EHS), and control subjects during rest and performance of a mental arithmetic task. Twenty par...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:
更新日期:2001-10-01 00:00:00
abstract::Calcium (45Ca2+) efflux from preloaded synaptosomes was studied with a continuous perfusion technique and the rate constants of a two-phase efflux process calculated. When 16-Hz sinusoidally amplitude modulated 450-MHz microwave field (maximal incident intensity 0.5 mW/cm2, modulation depth 75%) was applied during the...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250030303
更新日期:1982-01-01 00:00:00
abstract::Daily preexposure and postexposure mass measurements of 65 rats (young males and females, old males) a proprietary pulsed wound healing field, pulsed electromagnetic field, (PEMF), or their control fields for 4 h/day for 21 days. Statistical analysis of mass changes over time showed that young rats exposed to PEMF los...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.92
更新日期:2002-01-01 00:00:00
abstract::Electromagnetic sensibility refers to the ability to perceive the electromagnetic field (EMF) without necessarily developing health symptoms attributed to EMF exposure. A large sample of young healthy adults (n = 84) performed two forced-choice tasks on the perception of the GSM mobile phone EMF (902 MHz pulsed at 217...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20375
更新日期:2008-02-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:
更新日期:1999-01-01 00:00:00
abstract::Blackman et al. [1994] describe an experiment that purports to show that weak 45 Hz magnetic fields inhibit the growth of neurites from PC-12 cells treated with a growth stimulation factor. I present a statistical analysis of the data in that paper that shows that the data were corrupted in some way; hence, the result...
journal_title:Bioelectromagnetics
pub_type: 评论,杂志文章
doi:10.1002/(SICI)1521-186X(1996)17:6<510::AID-BEM12>3
更新日期:1996-01-01 00:00:00
abstract::Ozone can be produced by corona discharge either in dry air or when one electrode is submerged in water. Since ozone is toxic, we examined whether ozone production by corona near laboratory animals could reach levels of concern. Male rats were exposed to a corona discharge and the concentration of ozone produced was m...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.10161
更新日期:2004-02-01 00:00:00
abstract::Effects of short, extremely high power microwave pulses (EHPP) on neuronal network function were explored by electrophysiological techniques in the isolated rat hippocampal slice model. Population spikes (PS) in the CA1 area were evoked by repeated stimulation (1 per 30 s) of the Schaffer collateral pathway. A brief t...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.10079
更新日期:2003-04-01 00:00:00
abstract::Some numerical and analytical methods used to estimate the internal electric fields and current densities produced within human and animal models by low-frequency electric and magnetic fields are surveyed. A major goal of such modeling is the design of laboratory experiments on cellular systems or animal models to pro...
journal_title:Bioelectromagnetics
pub_type: 杂志文章,评审
doi:10.1002/bem.2250130705
更新日期:1992-01-01 00:00:00
abstract::As a result of ischaemia/reperfusion, massive generation of reactive oxygen species occurs, followed by decreased activity of antioxidant enzymes. Extremely low frequency electromagnetic fields (ELF-EMF) can modulate oxidative stress, but there are no clinical antioxidant studies in brain stroke patients. The aim of o...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.22055
更新日期:2017-07-01 00:00:00
abstract::Data are presented on ankle-specific SARs and foot currents as a function of strengths of radio-frequency electromagnetic fields encountered by operators of dielectric heaters. The determination of foot currents was based on near-field exposures in which reactive coupling dominates, and which can result in substantial...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250130204
更新日期:1992-01-01 00:00:00
abstract::Accumulating evidence does not yet confirm the effect of power line frequency magnetic field (MF) on human health and fertility. We recently reported that, at continuous 60 Hz MF exposure in mice, the dose given as magnetic flux density (tesla; T) and duration of exposure was related to induce testicular germ cell apo...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.22146
更新日期:2018-10-01 00:00:00
abstract::This study analyzes if an external magnetic stimulus (2 kHz and approximately 0.1 μT applied near frontal cortex) influences working memory, perception, binary decision, motor execution, and sustained attention in humans. A magnetic stimulus and a sham stimulus were applied to both sides of the head (frontal cortex cl...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21944
更新日期:2016-01-01 00:00:00