Study type: other

1985 · Manual

The paper proposes a new model where ELF magnetic fields at geomagnetic levels interact with living cells via cyclotron resonance of ions, particularly K+ ions, moving through membrane channels. This model explains previous experimental results and suggests a mechanism for electromagnetic energy transfer to cell compartments.

Study URL: https://link.springer.com/article/10.1007/BF01878387

Study type: ecological

Environ Health Perspect · 1985 · Manual

In an occupational mortality analysis of 486,000 adult male death records (Washington State, 1950–1982), leukemia and non-Hodgkin's/other lymphomas showed increased PMRs in nine occupations considered to have electric or magnetic field exposures (12,714 total deaths in these occupations). Eight of nine occupations had increased PMRs for leukemia and seven of nine had increased PMRs for other lymphomas; the highest PMRs were for acute leukemia (67 observed vs 41 expected; PMR 162) and other lymphomas (51 observed vs 31 expected; PMR 164). No increase in mortality was reported for Hodgkin's disease or multiple myeloma.

DOI: 10.1289/ehp.8562297 · PMID: 4085433

Study URL: https://pubmed.ncbi.nlm.nih.gov/4085433/

Study type: in_vitro

Bioelectromagnetics · 1985 · Manual

In a local geomagnetic field (LGF) of 38 microT, 15- and 45-Hz electromagnetic signals (40 Vp-p/m in air) were reported to induce a change in calcium ion efflux from brain tissue in vitro, while 1- and 30-Hz signals did not. Reducing the LGF to 19 microT rendered the 15-Hz signal ineffective, and changing the LGF to +/-25.3 microT or +/-76 microT made the previously ineffective 30-Hz signal effective, suggesting LGF intensity modifies the frequency-dependent effect.

DOI: 10.1002/bem.2250060402 · PMID: 3836676

Study URL: https://pubmed.ncbi.nlm.nih.gov/3836676/

Study type: in_vitro

Bioelectromagnetics · 1985 · Manual

In chick brain tissue in vitro, enhanced calcium ion efflux depended on ELF frequency and field intensity. No enhanced efflux was observed for 42 Hz at 30–60 Vp-p/m, while 45 Hz produced enhanced efflux around 40 Vp-p/m; 50 Hz produced enhanced efflux in a narrower intensity region (45–50 Vp-p/m), and 60 Hz only at 35 and 40 Vp-p/m. RF carrier waves amplitude-modulated at 50 Hz also showed enhanced efflux over a narrow power density range; frequency sweeps at 42.5 Vp-p/m indicated two responsive frequency regions centered near 15 Hz and spanning 45–105 Hz.

DOI: 10.1002/bem.2250060102 · PMID: 3977964

Study URL: https://pubmed.ncbi.nlm.nih.gov/3977964/

Study type: other

Bioelectromagnetics · 1985 · PubMed

Across the bacterial Ames assays and a Drosophila somatic mutation test, microwave or radiofrequency field exposures did not induce an elevated mutation frequency. A significantly higher concentration of cells was observed in bacterial cultures exposed to a 27.12-MHz magnetic field and to 2.45-GHz CW and 3.10-GHz pulsed microwave radiation.

DOI: 10.1002/bem.2250060407 · PMID: 3939187

Study URL: https://pubmed.ncbi.nlm.nih.gov/3939187/

Study type: animal

Bioelectromagnetics · 1985 · PubMed

Adult rats exposed for 30 min to 1.7-GHz continuous-wave or pulsed microwaves at 0.1 W/kg showed no change in uptake of either tracer in any measured brain region compared with sham-exposed animals.

DOI: 10.1002/bem.2250060205 · PMID: 4004946

Study URL: https://pubmed.ncbi.nlm.nih.gov/4004946/

Study type: exposure_assessment

Bioelectromagnetics · 1985 · PubMed

Using twin-well calorimetry, whole-body averaged SAR in rat carcasses exposed to 360, 700, 915, and 2,450 MHz CW radiation showed a nonmonotonic frequency dependence with 700 MHz identified as a resonant frequency. Local SAR measured with a fiber optical temperature probe was nonuniform, with frequency-specific hotspots reported in the colon, rectum, and tail.

DOI: 10.1002/bem.2250060211 · PMID: 4004952

Study URL: https://pubmed.ncbi.nlm.nih.gov/4004952/

Physical review letters · 1985 · PubMed

DOI: 10.1103/physrevlett.54.889 · PMID: 10031647

Study URL: https://pubmed.ncbi.nlm.nih.gov/10031647/

Study type: animal

Radiation research · 1985 · PubMed

Microwave exposure (2.45 GHz; incident power density 30 mW/cm2; local SAR near uterine area 40.2 mW/g) increased embryo lethality when exposure occurred during early gestation (Days 1–6). Fetal toxicity and teratogenicity were not significantly increased for exposures during Days 1–6 or 6–15, and fetal brain cholinesterase activity and histology (assessed for Days 6–15 exposure groups) were not adversely affected.

PMID: 3983369

Study URL: https://pubmed.ncbi.nlm.nih.gov/3983369/

Vrachebnoe delo · 1985 · PubMed

PMID: 4013206

Study URL: https://pubmed.ncbi.nlm.nih.gov/4013206/

Gigiena i sanitariia · 1985 · PubMed

PMID: 4065599

Study URL: https://pubmed.ncbi.nlm.nih.gov/4065599/

Study type: in_vitro

Biofizika · 1985 · PubMed

Microwave radiation (1000 ± 10 MHz) increased the ferricyanide reduction rate only at temperature ranges corresponding to two "anomalous" regions in the temperature dependence (26–27°C and 29–30°C). The breadth and expression of these anomalous regions increased with longer blood storage time.

PMID: 4052489

Study URL: https://pubmed.ncbi.nlm.nih.gov/4052489/

Study type: animal

Radiobiologiia · 1985 · PubMed

Immunochemical analysis of blood serum protein fractions reported destabilization of humoral immune system factors at 500 W/cm2, manifested by formation of a new protein with physico-chemical properties of immunoglobulin G. The authors discuss the possibility that microwave irradiation may stimulate autoimmune reactions.

PMID: 4081001

Study URL: https://pubmed.ncbi.nlm.nih.gov/4081001/

Study type: in_vitro

Bioelectromagnetics · 1985 · PubMed

During irradiation, 340-MHz microwaves (SAR 100 W/kg) decreased lipid viscosity, altered the structural state of lipid-protein contact regions, and decreased protein shielding of lipids in erythrocyte membranes. Similar changes were observed during 900-MHz irradiation (10 mW/cm2) during trinitrophenylation, and the reported changes corresponded to those produced by thermal action of microwaves.

DOI: 10.1002/bem.2250060310 · PMID: 3836673

Study URL: https://pubmed.ncbi.nlm.nih.gov/3836673/

Study type: in_vitro

Bioelectromagnetics · 1985 · PubMed

In vitro, erythrocytes in whole heparinized rabbit blood showed a field-strength-dependent hemolytic effect after 2 h continuous-wave RF exposure. Hemolysis occurred at 50 or 100 MHz at field strengths >4 V/cm, and at 10 MHz at 9 V/cm, with sample temperature maintained at 22.5 ± 0.2 °C and no apparent involvement of heating; no RF effects were observed on cellular K+ or Na+ concentrations or on pH.

DOI: 10.1002/bem.2250060311 · PMID: 3836674

Study URL: https://pubmed.ncbi.nlm.nih.gov/3836674/

Study type: animal

The Journal of microwave power and electromagnetic energy : a publication of the International Microwave Power Institute · 1985 · PubMed

In rhesus monkeys chronically exposed to 9.3 GHz microwave radiation at average incident power densities of 150 or 300 mW/cm2, only inconsistent transient hematological and blood-chemistry effects were reported. The abstract states a lack of significant hematological effects and references earlier reports of no ocular or behavioral changes.

DOI: 10.1080/16070658.1985.11720275 · PMID: 3847503

Study URL: https://pubmed.ncbi.nlm.nih.gov/3847503/

Study type: animal

The Journal of microwave power and electromagnetic energy : a publication of the International Microwave Power Institute · 1985 · PubMed

Single cells of Chara braunii and Nitella flexilis were irradiated with 2.45-GHz microwaves for short, intermediate, and long durations. No reliable radiation-correlated shifts were observed in vacuolar potential (dc level), low-frequency excess noise, or membrane resistivity, including under reduced temperature or ethacrynic acid conditions.

DOI: 10.1080/16070658.1985.11720278 · PMID: 3847506

Study URL: https://pubmed.ncbi.nlm.nih.gov/3847506/

Study type: other

The Journal of microwave power and electromagnetic energy : a publication of the International Microwave Power Institute · 1985 · PubMed

The authors re-examined Frey’s critique/analysis of two prior studies and report that log-linear tests of opacity data indicated subject age was significantly associated with opacities, whereas microwave radiation was not significantly associated (contrary to Frey’s conclusion).

DOI: 10.1080/16070658.1985.11720302 · PMID: 3851851

Study URL: https://pubmed.ncbi.nlm.nih.gov/3851851/

Study type: animal

The Journal of heredity · 1985 · PubMed

Male mice exposed to continuous 2.45 GHz microwaves showed chain translocations at diakinesis/metaphase I; translocation yield increased with exposure and varied nonlinearly with dose rate. Increased incidence of univalents was reported after exposure at 10 and 20 mW/g.

DOI: 10.1093/oxfordjournals.jhered.a110027 · PMID: 3980975

Study URL: https://pubmed.ncbi.nlm.nih.gov/3980975/

Study type: animal

Radiation and environmental biophysics · 1985 · PubMed

Microwave irradiation (2450 MHz, 30 min, SAR 13 mW/g) decreased membrane resistance (increased membrane conductance) in snail neurons. Lowering extracellular Ca2+ (7 mM to 0.7 mM) or blocking calcium channels with Cd2+ (0.9 mM) did not change the microwave-induced fall in membrane resistance compared with normal Ringer solution; high Ca2+ experiments were reported as supportive.

DOI: 10.1007/bf01229821 · PMID: 4011850

Study URL: https://pubmed.ncbi.nlm.nih.gov/4011850/

Study type: in_vitro

Carcinogenesis · 1985 · PubMed

At low incident power density (energy absorption rate 4.4 W/kg) and controlled temperature (37.2±0.1°C), 2.45 GHz microwave radiation reduced plating efficiency by 50%. Microwave exposure had no effect on transformation induced by benzo[a]pyrene or X-rays in the absence of tumor promoter, but subsequent treatment with a non-cytotoxic/non-transforming concentration of TPA after microwave and X-ray exposure produced statistically significant increases in transformation compared with X-rays alone (3.5-fold at 1.5 Gy; 1.6-fold at 4.5 Gy).

DOI: 10.1093/carcin/6.6.859 · PMID: 4006071

Study URL: https://pubmed.ncbi.nlm.nih.gov/4006071/

Study type: engineering

Journal of theoretical biology · 1985 · PubMed

A dipole layer model is used to calculate the current dipole moment of the cortical extracellular electric field and is extended to microwave frequencies. The paper presents arguments for possible microwave radiation emission by dendritic membranes of pyramidal neurons and calculates/discusses the radiative electric field strength at a distance from the head.

DOI: 10.1016/s0022-5193(85)80085-0 · PMID: 4068727

Study URL: https://pubmed.ncbi.nlm.nih.gov/4068727/

Study type: animal

Radiobiologiia · 1985 · PubMed

Interrupted short-wave EMF exposure at 500 and 250 V/m was associated with activation of hypothalamic neurosecretion, inhibition of adrenocorticotropic and gonadotropic functions of the hypophysis and adrenal cortex, and degenerative/dystrophic changes in testes. Reported disorders increased with higher field intensity and longer exposure duration.

PMID: 4080993

Study URL: https://pubmed.ncbi.nlm.nih.gov/4080993/