Abstract:
:In view of possible therapeutic applications of magnetic fields, the effect of an enhancement of neuronal outgrowth at higher figures of flux density and induced field strength was investigated. On the average sinusoidal magnetic field treatment at 100 microTrms/50 Hz did not change nerve growth factor (NGF) induced neurite outgrowth to a statistically significant extent. These results suggest that further increasing the induced field strength by using either higher flux densities and/or more sophisticated wave forms might be necessary to cause the neuronal response of PC-12 cells, as seen in other experiments.
journal_name
Bioelectromagneticsjournal_title
Bioelectromagneticsauthors
Schimmelpfeng J,Weibezahn KF,Dertinger Hdoi
10.1002/bem.20073subject
Has Abstractpub_date
2005-01-01 00:00:00pages
74-7issue
1eissn
0197-8462issn
1521-186Xjournal_volume
26pub_type
杂志文章abstract::C57/B1 mice were exposed during pregnancy (gestation days 0-19) to a 20 kHz magnetic field (MF). The asymmetric sawtooth-waveform magnetic field in the exposed racks had a flux density of 15 microT (peak to peak). After 19 days, the exposure was terminated, and the mice were housed individually under normal laboratory...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250160409
更新日期:1995-01-01 00:00:00
abstract::The extent of electromagnetic interference (EMI) from 16.7-Hz alternate current power lines in the human surface electrocardiogram (ECG) was evaluated. Results showed a direct linear correlation between mean EMI and magnetic induction of 5.8-21 microT on a railroad platform (electric field: 270 V/m). EMI inside a rail...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20319
更新日期:2007-07-01 00:00:00
abstract::Stress proteins are important in protection during cardiac ischemia/reperfusion (cessation and return of blood flow) and are reportedly induced by electromagnetic (EM) fields. This suggests a possible ischemia protection role for EM exposures. To test this, chick embryos (96 h) were exposed to 60 Hz magnetic fields pr...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/(sici)1521-186x(1998)19:8<498::aid-bem8>3.
更新日期:1998-01-01 00:00:00
abstract::Different species of ciliates (Paramecium biaurelia, Loxodes striatus, Tetrahymena thermophila) have been taken as model systems to study the effects of extremely low-frequency electromagnetic fields (50 Hz, 0.5-2.0 mT) on the cellular level. A dose-dependent increase in the mean swimming velocity and a decrease in th...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/(sici)1521-186x(1997)18:7<491::aid-bem4>3.
更新日期:1997-01-01 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::A 275-MHz exposure system, consisting of a circular waveguide irradiator and a transparent plastic animal cage, has been developed to accommodate rhesus monkeys weighing up to 15 kg. The vertically oriented waveguide is composed primarily of stainless steel and is fitted with an inner cage fabricated from a tubular se...
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 constant exposure of modern society to extremely low frequency magnetic fields (ELF-MF) has raised considerable concerns about the potential risks to male reproduction. However, the epidemiological and experimental data remain contradictory and inconclusive. In the present study, we investigated the effects of 50 ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21816
更新日期:2014-01-01 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::To evaluate duration- and dose-dependent effects of continuous exposure to a 60 Hz magnetic field (MF) on the testes in mice, BALB/c male mice were exposed to a 60 Hz MF at 100 μT for 24 h a day for 2, 4, 6, or 8 weeks, and at 2, 20, or 200 μT for 24 h a day for 8 weeks. Any exposures to MF did not significantly affec...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21819
更新日期:2014-02-01 00:00:00
abstract::In the last few years, significant developments have taken place in the field of Wireless Local Area Networks (WLAN), and the popularity of portable devices supporting Wireless Fidelity (Wi-Fi) is continuously growing. At the same time, the number of Active Implanted Medical Devices (AIMD) being placed in patients is ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20601
更新日期:2010-10-01 00:00:00
abstract::Occupational exposure to the high static magnetic fields (SMFs) during magnetic resonance imaging (MRI) examinations raises concerns of adverse health effects. In this study, personal exposure monitoring of the magnetic fields during routine examinations in two 3 T MRI systems was carried out. A three-axis Hall magnet...
journal_title:Bioelectromagnetics
pub_type: 杂志文章,多中心研究
doi:10.1002/bem.21817
更新日期:2014-01-01 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::The effects of millimeter waves (MW) on human keratinocytes were studied in vitro using the HaCaT keratinocyte cell line. MW-induced modulation of keratinocyte function was studied in proliferation, adhesion, chemotaxis, and interleukin-1beta (IL-1beta) production assays. Spontaneous proliferation, adhesion to tissue ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.62
更新日期:2001-07-01 00:00:00
abstract::Sixty-Hz magnetic field exposures were measured for 45 adult residents of Maine. Thirty of the subjects resided near rights-of-way (ROWs) with either 345- and 115-kV transmission lines, or ROWs with only 115-kV transmission lines; fifteen resided far from any transmission lines. Personal exposure data for a single 24-...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250130106
更新日期:1992-01-01 00:00:00
abstract::To investigate the effects of 1.8 GHz radiofrequency (RF) field on bone microstructure and metabolism of femur in mice, C57BL/6 mice (male, age 4 weeks) were whole-body exposed or sham exposed to 1.8 GHz RF field. Specific absorption rates of whole body and bone were approximately 2.70 and 1.14 W/kg (6 h/day for 28 da...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.22125
更新日期:2018-07-01 00:00:00
abstract::The rapid advancement of technology has led to an exponential increase of both nanomaterial and magnetic field utilization in applications spanning a variety of sectors. While extensive work has focused on the impact of these two variables on biological systems independently, the existence of any synergistic effects f...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21790
更新日期:2013-10-01 00:00:00
abstract::International bodies such as International Commission on Non-Ionizing Radiation Protection (ICNIRP) and the Institute for Electrical and Electronic Engineering (IEEE) make provision for human exposure assessment based on SAR calculations (or measurements) and basic restrictions. In the case of base station exposure th...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20122
更新日期:2005-09-01 00:00:00
abstract::In the clinic, although several pharmacological agents or surgical procedures are used to treat diabetes and diabetes-induced neuropathic pain, their success has been limited. Therefore, development of different alternatives in treatments is very important. The purpose of this study was to determine the efficacy of pu...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20524
更新日期:2010-01-01 00:00:00
abstract::This study was designed to determine the changes that occur in the thermoregulatory ability of the immature rat repeatedly exposed to low-level microwave radiation. Beginning at 6-7 days of age, previously untreated rats were exposed to 2,450-MHz continuous-wave microwaves at a power density of 5 mW/cm2 for 10 days (4...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250080307
更新日期:1987-01-01 00:00:00
abstract::The effects of hyperthermia, alone and in conjunction with microwave exposure, on brain energetics were studied in anesthetized male Sprague-Dawley rats. The effect of temperature on adenosine triphosphate concentration [ATP] and creatine phosphate concentration [CP] was determined in the brains of rats that were main...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250050107
更新日期:1984-01-01 00:00:00
abstract::It has been suggested that exposure to electromagnetic fields may be a risk factor for cardiovascular disease in humans. Low density lipoprotein (LDL) modifications such as peroxidation and aggregation have been implicated in the pathogenesis of atherosclerosis. The present study investigated the effects of weak (0.12...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21779
更新日期:2013-07-01 00:00:00
abstract::In this study, the difference between the risk perception of electromagnetic waves from cellular phones and the risk perception of other factors such as environment and food was analyzed. The cause of the difference in the psychological and social factors that affect the group with high risk perception of electromagne...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21836
更新日期:2014-05-01 00:00:00
abstract::A biphasic modulation of responsiveness of spleen lymphocytes to mitogens was observed in mice exposed to 2,450-MHz radiation at power densities of 5-15 mW/cm2 over various periods ranging between one and 17 days. This modulated phenomenon may be explained on the basis of 1) suppression of lymphocyte response to micro...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250010108
更新日期:1980-01-01 00:00:00
abstract::There is growing public concern that radio frequency electromagnetic fields may have adverse biological effects. In the present study eight healthy male students were tested to see whether or not radio frequency electromagnetic fields as used in modern digital wireless telecommunication (GSM standard) have noticeable ...
journal_title:Bioelectromagnetics
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/bem.51
更新日期:2001-05-01 00:00:00
abstract::Our previous studies showed that extremely low frequency magnetic fields (ELF-MFs) inhibited tumor growth and change proportion of splenic regulatory T cells (Treg cells). Here, we focus on the effect of ELF-MFs on lung metastatic melanoma mouse model and the regulatory mechanism of ELF-MFs on the differentiation of T...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21954
更新日期:2016-02-01 00:00:00
abstract::To assess the effect of a magnetic treatment on pain perception, we compared the sensory threshold in 18 healthy volunteers. We determined the threshold by noninvasive electrical stimulation of the tooth pulp and skin before and after exposure to an altered magnetic field of low intensity and to a sham treatment. Five...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250160505
更新日期:1995-01-01 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
abstract::We developed a new computer wire coding method and then applied it to investigate the suggestion that control selection bias might explain the observed association between wire codes and childhood cancer made in the study conducted by Savitz et al. in the Denver area. The computer wire coding method used a geographic ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:
更新日期:2000-07-01 00:00:00
abstract::We summarize the results of several of our recent studies on the dielectric properties of protein solutions, tissues, and nonionic microemulsions at microwave frequencies extending to 18 GHz. The data in all cases are analyzed using the Maxwell mixture theory to determine the dielectric properties of the suspending wa...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250030108
更新日期:1982-01-01 00:00:00
abstract::The aim of the present study was to investigate the influence of 50 Hz sinusoidal magnetic field on Hsp27, Hsp70, and Hsp90 expression in a model of primary culture of porcine aortic endothelial cells (PAEC). We took into consideration the Hsp profile in terms of mRNA expression, protein expression and protein localiz...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20299
更新日期:2007-04-01 00:00:00