Thermal action of 2.45 GHz microwaves on the cytoplasm of Chinese hamster cells.

Abstract:

:In order to demonstrate possible specific effects of microwaves at the cellular level V-79 Chinese hamster cells were exposed to 2.45-GHz radiation at power levels of 20-200 mW/cm2 and at specific absorption rates of 10-100 mW/g. Intracellular cytoplasmic changes were observed by fluorescence polarization using a method based on the intracellular enzymatic hydrolysis of nonfluorescent fluorescein diacetate (FDA). At levels of absorbed energy below 90 J/g, modifications of microviscosity and mitochondrial state were absent, but a slight stimulation of enzymatic hydrolysis of FDA was observed which may be explained by microwave-induced alterations of cellular membranes possibly due to differences in heating pattern of microwaves compared to water-bath heating. At levels of absorbed energy above 90 J/g, the decrease of enzymatic hydrolysis of FDA, increase in degree of polarization, and increase of permeation of the fluorescent marker correlated well with the decrease in cell viability as measured by the exclusion of trypan blue. At equal absorbed energy, microwaves were found to exert effects comparable to classical heating except that permeation was slightly more affected by microwave than by classical heating. This suggests that membrane alteration produced by microwaves might differ from those induced by classical heating or that microwaves may have heated the membrane to higher temperatures than did classical heating.

journal_name

Bioelectromagnetics

journal_title

Bioelectromagnetics

authors

Dardalhon M,Moré C,Averbeck D,Berteaud AJ

doi

10.1002/bem.2250050212

subject

Has Abstract

pub_date

1984-01-01 00:00:00

pages

247-61

issue

2

eissn

0197-8462

issn

1521-186X

journal_volume

5

pub_type

杂志文章
  • Evaluation of the effects of weak and moderate static magnetic fields on the characteristics of human low density lipoprotein in vitro.

    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

    authors: Abdi S,Dorranian D,Razavi AE,Naderi GA,Boshtam M,Ghorannevis M

    更新日期:2013-07-01 00:00:00

  • Foot currents and ankle SARs induced by dielectric heaters.

    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

    authors: Conover DL,Moss CE,Murray WE,Edwards RM,Cox C,Grajewski B,Werren DM,Smith JM

    更新日期:1992-01-01 00:00:00

  • Millimeter microwave effect on ion transport across lipid bilayer membranes.

    abstract::The effects of millimeter microwaves in the frequency range of 54-76 GHz on capacitance and conductance of lipid bilayer membranes (BLM) were studied. Some of the membranes were modified by gramicidin A and amphotericin B or by tetraphenylboron anions (TPhB-). The millimeter microwaves were pulse-modulated (PW) at rep...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.2250160209

    authors: Alekseev SI,Ziskin MC

    更新日期:1995-01-01 00:00:00

  • Short-term exposure to a 1439-MHz TDMA signal exerts no estrogenic effect in rats.

    abstract::The aim of this study was to elucidate the possible effects of short-term exposure to a 1439-MHz electromagnetic field (EMF) employing time division multiple access (TDMA), which is the basis of the Japanese Personal Digital Cellular system, on estrogenic activity in rats. Sixty-four ovariectomized female Sprague-Dawl...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.20593

    authors: Yamashita H,Hata K,Yamaguchi H,Tsurita G,Wake K,Watanabe S,Taki M,Ueno S,Nagawa H

    更新日期:2010-10-01 00:00:00

  • Effects of a 30 kV/m, 60 Hz electric field on the social behavior of baboons: a crossover experiment.

    abstract::Using a crossover experimental design, we evaluated our earlier findings that exposure to a 30 kV/m, 60 Hz electric field for 12 hours per day, 7 days per week for 6 weeks produced significant changes in the performance rates of social behaviors among young adult male baboons. In the crossover experiment, the former c...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.2250130506

    authors: Easley SP,Coelho AM Jr,Rogers WR

    更新日期:1992-01-01 00:00:00

  • Effects of exposure to a circularly polarized 50-Hz magnetic field on plasma and pineal melatonin levels in rats.

    abstract::We sought to determine whether a 6-week exposure to a 50-Hz rotating magnetic field influences melatonin synthesis by 11-18 week-old Wistar-King male rats. Rats were exposed continuously to a rotating magnetic field at 1, 5, 50, or 250 microT (spatial vector rms) for 6 weeks, except for twice-weekly breaks of about 2 ...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.2250140203

    authors: Kato M,Honma K,Shigemitsu T,Shiga Y

    更新日期:1993-01-01 00:00:00

  • Some behavioral effects of short-term exposure of rats to 2.45 GHz microwave radiation.

    abstract::Rats were tested for neurobehavioral alterations immediately after exposure to 2.45-GHz (CW) microwave radiation at 10 mW/cm2 for 7 h. Behavioral tests used were locomotor activity, startle to an acoustic stimulus and acquisition and retention of a shock-motivated passive avoidance task. Both horizontal and vertical c...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.2250090307

    authors: Mitchell CL,McRee DI,Peterson NJ,Tilson HA

    更新日期:1988-01-01 00:00:00

  • Computational verification of anesthesia effect on temperature variations in rabbit eyes exposed to 2.45 GHz microwave energy.

    abstract::This paper computationally verifies the effect of anesthesia on temperature variations in the rabbit eye due to microwave energy. The main reason for this investigation is that our previous paper suggested a reduction in blood flow due to the administration of anesthesia, resulting in an overestimated temperature incr...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.20251

    authors: Hirata A,Watanabe S,Kojima M,Hata I,Wake K,Taki M,Sasaki K,Fujiwara O,Shiozawa T

    更新日期:2006-12-01 00:00:00

  • Studies on the possible biological effects of 50 Hz electric and/or magnetic fields: evaluation of some glycolytic enzymes, glycolytic flux, energy and oxido-reductive potentials in human erythrocytes exposed in vitro to power frequency fields.

    abstract::An attempt has been made to understand whether 50 Hz electric and magnetic fields (EMFs) are involved in producing bioeffects by exposing human erythrocytes in vitro. The study evaluated some key glycolytic enzymes, glucose consumption, lactate production, energy charge, 2,3-diphosphoglycerate, and reduced glutathione...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.2250140410

    authors: Dachà M,Accorsi A,Pierotti C,Vetrano F,Mantovani R,Guidi G,Conti R,Nicolini P

    更新日期:1993-01-01 00:00:00

  • The role of temporal sensing in bioelectromagnetic effects.

    abstract::Experiments were conducted to see whether the cellular response to electromagnetic (EM) fields occurs through a detection process involving temporal sensing. L929 cells were exposed to 60 Hz magnetic fields and the enhancement of ornithine decarboxylase (ODC) activity was measured to determine cellular response to the...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/(sici)1521-186x(1997)18:5<388::aid-bem6>3.

    authors: Litovitz TA,Penafiel M,Krause D,Zhang D,Mullins JM

    更新日期:1997-01-01 00:00:00

  • Interactive effects in 60-Hz electric-field exposure systems.

    abstract::The level of exposure of laboratory animals to 60-Hz electric fields is commonly specified in terms of the unperturbed field strength present before the introduction of experimental subjects and their cages. In the research reported in this paper, rats were housed in two parallel rows in 12.4 cm x 25.1 cm x 10.2 cm hi...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.2250020105

    authors: Kaune WT

    更新日期:1981-01-01 00:00:00

  • Specific absorption rate in rats exposed to 2,450-MHz microwaves under seven exposure conditions.

    abstract::Both positive and negative biological effects of microwaves on drug actions in rats exposed to 1-mW/cm2, 2,450-MHz microwaves have been reported by several investigators. We conducted dosimetry studies for seven different exposure conditions to determine whether these different results could be due to the rats having ...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.2250060108

    authors: Chou CK,Guy AW,McDougall JA,Lai H

    更新日期:1985-01-01 00:00:00

  • Coronary heart diseases: assessment of risk associated with work exposure to ultralow-frequency magnetic fields.

    abstract::The present analysis was stimulated by previous findings on the possible influence of natural ultralow-frequency (ULF; 0.001-10 Hz) geomagnetic field variations on the cardiovascular system and indications of an effect of man-made ULF magnetic fields on the rate of myocardial infarction. In the present study, we consi...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/(SICI)1521-186X(1996)17:6<436::AID-BEM2>3.

    authors: Ptitsyna NG,Villoresi G,Kopytenko YA,Kudrin VA,Tyasto MI,Kopytenko EA,Iucci N,Voronov PM,Zaitsev DB

    更新日期:1996-01-01 00:00:00

  • Reproductive hazards among workers at high voltage substations.

    abstract::A retrospective study on reproductive hazards was performed among 542 employees at Swedish power plants. Questionnaires were answered by 89% of the employees. Data on pregnancies were checked by studying hospital case records. There was a statistically significant, decreased frequency of "normal" pregnancy outcome, al...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.2250040109

    authors: Nordström S,Birke E,Gustavsson L

    更新日期:1983-01-01 00:00:00

  • Personal exposure to mobile communication networks and well-being in children--a statistical analysis based on a functional approach.

    abstract::The MobilEe-study was the first cross-sectional population-based study to investigate possible health effects of mobile communication networks on children using personal dosimetry. Exposure was assessed every second resulting in 86,400 measurements over 24 h for each participant. Therefore, a functional approach to an...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.20477

    authors: Kühnlein A,Heumann C,Thomas S,Heinrich S,Radon K

    更新日期:2009-05-01 00:00:00

  • Carcinogenicity test in B6C3F1 mice after parental and prenatal exposure to 50 Hz magnetic fields.

    abstract::Some epidemiological studies suggest association of childhood cancer with occupational exposure of the parents to magnetic fields. To test this relationship, 50 each of C57BL/6J female and C3H/HeJ male mice were exposed for 2 and 9 weeks, respectively, to 50 Hz sham (group A), 0.5 (group B), and 5 mT (group C) sinusoi...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.10012

    authors: Otaka Y,Chida T,Yamagishi Y,Kitamura S

    更新日期:2002-04-01 00:00:00

  • Internal field strength measurements in chick forebrains at 50, 147, and 450 MHz.

    abstract::This report describes some experimental measurements of the internal field levels induced within isolated chick-forebrains irradiated at 50, 147, and 450 MHz, under essentially the same conditions as those used in the in vitro calcium-ion efflux experiments. Ratios of incident power at 50/147 MHz and 147/450 MHz that ...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.2250050302

    authors: Weil CM,Spiegel RJ,Joines WT

    更新日期:1984-01-01 00:00:00

  • Amyotrophic lateral sclerosis and occupational exposure to electromagnetic fields.

    abstract::In an hypothesis-generating case-control study of amyotrophic lateral sclerosis, lifetime occupational histories were obtained. The patients (n = 28) were clinic based. The occupational exposure of interest in this report is electromagnetic fields (EMFs). This is the first and so far the only exposure analyzed in this...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/(sici)1521-186x(1997)18:1<28::aid-bem6>3.0

    authors: Davanipour Z,Sobel E,Bowman JD,Qian Z,Will AD

    更新日期:1997-01-01 00:00:00

  • Multi-physics modeling to study the influence of tissue compression and cold stress on enhancing breast tumor detection using microwave radiometry.

    abstract::The influence of tissue compression and external thermal modulation on passive detection of breast tumors using medical microwave radiometry was investigated using multi-physics numerical modeling. A three-dimensional numerical model of the pendant breast with 10 and 6 mm diameter tumors at varying depths (15 mm, 30 m...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.22184

    authors: Akki RS,Sugumar SP,Venkata KC,Arunachalam K

    更新日期:2019-05-01 00:00:00

  • Current densities induced in swine and rat models by power-frequency electric fields.

    abstract::Measurements have been made of vector current densities induced by vertical, uniform, 60-Hz electric fields in the torsos of homogeneous models of swine and rats. The observed data were a strong function of the five grounding configurations invested: all four feet grounded, only front feet grounded, only rear feet gro...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.2250090102

    authors: Kaune WT,Forsythe WC

    更新日期:1988-01-01 00:00:00

  • Amplitude and frequency dissociation spectra of ion-protein complexes rotating in magnetic fields.

    abstract::A mechanism is presented that predicts new biological effects of static and sinusoidal weak magnetic fields. The model is based on an earlier proposed interference mechanism of quantum states of ions within protein cavities. The quantum dynamics of an ion is studied for the case of ion-protein complexes that rotate in...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:

    authors: Binhi VN

    更新日期:2000-01-01 00:00:00

  • Effects of static magnetic fields on growth of Paramecium caudatum.

    abstract::Little is known about the influence of magnetic fields on growth of primitive eukaryotes such as the ciliate Paramecium. The latter are known to exhibit interesting characteristics such as electrotaxis, gravitaxis, and membrane excitability not commonly encountered in higher organisms. This preliminary study reports t...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.20172

    authors: Elahee KB,Poinapen D

    更新日期:2006-01-01 00:00:00

  • Effect of radiofrequency electromagnetic field exposure on in vitro models of neurodegenerative disease.

    abstract::In this work we tested viability, proliferation, and vulnerability of neural cells, after continuous radiofrequency (RF) electromagnetic fields exposure (global system for mobile telecommunications (GSM) modulated 900 MHz signal at a specific absorption rate (SAR) of 1 W/kg and maximum duration 144 h) generated by tra...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.20507

    authors: Del Vecchio G,Giuliani A,Fernandez M,Mesirca P,Bersani F,Pinto R,Ardoino L,Lovisolo GA,Giardino L,Calzà L

    更新日期:2009-10-01 00:00:00

  • Effects of 60-Hz electric fields on cellular elongation and radial expansion growth in cucurbit roots.

    abstract::Serial longitudinal and transverse sections were prepared from roots of Cucumis sativus and Cucurbita maxima that had been exposed/sham-exposed to 60-Hz electric fields for 0-2 days. Field exposures were selected to produce a 10-20% or a 70-80% growth inhibition in whole roots of both species. Cortical cell length and...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.2250080108

    authors: Brayman AA,Miller MW,Cox C

    更新日期:1987-01-01 00:00:00

  • The effect of 20-week continuous 60 Hz magnetic field exposure on testicular function in sprague-dawley rats.

    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

    authors: Park S,Kim YJ,Kim MS,Kim HS,Kim MW,Kang YM,Lee SK,Choi KC,Kim N,Gimm YM,Kim YW

    更新日期:2018-10-01 00:00:00

  • Influence of extremely low frequency electromagnetic fields on the swimming behavior of ciliates.

    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.

    authors: Hemmersbach R,Becker E,Stockem W

    更新日期:1997-01-01 00:00:00

  • Dielectric properties of porcine brain tissue in the transition from life to death at frequencies from 800 to 1900 MHz.

    abstract::Ten experiments on pigs were performed to investigate possible postmortem changes of the dielectric properties of brain gray matter in the frequency range of 800-1900 MHz. After keeping the animals in stable anaesthesia for at least 45 min, they were euthanatised by an intravenous injection of hypertonic potassium chl...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.10122

    authors: Schmid G,Neubauer G,Illievich UM,Alesch F

    更新日期:2003-09-01 00:00:00

  • Effect of electrical stimulation on musculoskeletal systems; a meta-analysis of controlled clinical trials.

    abstract::This study was a meta-analysis to examine whether electrical stimulation has specific effects in the healing of musculoskeletal repair process and in the diminution of symptoms with bone and joint disorders. Using MEDLINE (1966-1999) and EMBASE (1985-1999) a search for articles was carried out with four medical subjec...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章,meta分析

    doi:10.1002/bem.106

    authors: Akai M,Hayashi K

    更新日期:2002-02-01 00:00:00

  • New theoretical treatment of ion resonance phenomena.

    abstract::Despite experimental evidence supporting ICR-like interactions in biological systems, to date there is no reasonable theoretical explanation for this phenomenon. The parametric resonance approach introduced by Lednev has enjoyed limited success in predicting the response as a function of the ratio of AC magnetic inten...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:10.1002/bem.20406

    authors: Vincze G,Szasz A,Liboff AR

    更新日期:2008-07-01 00:00:00

  • Cardiovascular and thermal responses in rats during 94 GHz irradiation.

    abstract::We investigated the thermal distribution and cardiovascular effects produced by sustained exposure of rats to 94 GHz radio-frequency electromagnetic radiation (RFR). Sixteen ketamine-anesthetized Sprague-Dawley rats were exposed individually at a power density of 75 mW/cm2 under far-field conditions in E orientation. ...

    journal_title:Bioelectromagnetics

    pub_type: 杂志文章

    doi:

    authors: Jauchem JR,Ryan KL,Frei MR

    更新日期:1999-01-01 00:00:00