Study type: in_vitro

Mutat Res · 1990 · Manual

Exposure to 7.7 GHz continuous microwave radiation (30 mW/cm2) inhibited [3H]thymidine incorporation by preventing DNA from entering S phase; incorporation returned to normal within one V79 generation cycle. Irradiated cells showed a higher frequency of specific chromosome lesions compared with controls, suggesting changes in DNA synthesis and DNA structure.

DOI: 10.1016/0165-7992(90)90028-i · PMID: 2304485

Study URL: https://pubmed.ncbi.nlm.nih.gov/2304485/

Study type: other

Periodicum biologorum · 1990 · PubMed

Micronucleus and chromosome aberration assays detected mutagenicity in lymphocytes from persons occupationally exposed to both vinyl chloride monomer and microwave radiation. The study reports quantitative and qualitative differences: VCM caused more overall chromosome damage but fewer dicentric and ring chromosomes than microwave radiation; anaphase bridges were constantly present in VCM-exposed persons but rarely seen in microwave-exposed persons; micronuclei per a given number of aberrations were higher in VCM-exposed than microwave-exposed persons.

PMID: 30260349

Study URL: https://pubmed.ncbi.nlm.nih.gov/30260349/

Health physics · 1990 · PubMed

PMID: 2298576

Study URL: https://pubmed.ncbi.nlm.nih.gov/2298576/

Study type: other

The British journal of dermatology · 1990 · PubMed

Several transdermal delivery systems exposed to microwave radiation from a microwave diathermy unit showed temperature rises up to 2.2°C at a maximum power density of 800 W/m2. The authors considered these rises insignificant for producing a burn and concluded such exposure (including lower-level microwave oven leakage) is unlikely to cause direct thermal injury to the wearer.

DOI: 10.1111/j.1365-2133.1990.tb08284.x · PMID: 2322499

Study URL: https://pubmed.ncbi.nlm.nih.gov/2322499/

Study type: animal

Radiobiologiia · 1990 · PubMed

Microwave irradiation (2450 MHz; specific absorbed power 0.1 to 5 W/g; continuous and pulsed-modulated) produced changes in potassium ion transport and oxygen consumption in perfused liver that did not differ from changes induced by heating the perfusate, suggesting a thermal mechanism.

PMID: 2349384

Study URL: https://pubmed.ncbi.nlm.nih.gov/2349384/

Physical review. B, Condensed matter · 1990 · PubMed

DOI: 10.1103/physrevb.41.10229 · PMID: 9993421

Study URL: https://pubmed.ncbi.nlm.nih.gov/9993421/

Study type: animal

Cryobiology · 1990 · PubMed

Microwave thawing produced non-uniform temperature distributions with frozen areas and/or hot spots in all phantom kidneys and in free-standing canine kidneys and gel-packed ethylene glycol-perfused kidneys. Glycerol- and dimethyl sulfoxide-perfused canine kidneys packed in gel showed no areas <0°C or >37°C after thawing. Changing organ geometry to a larger cylindrical shape improved thawing uniformity more than changing dielectric constant over the evaluated range.

DOI: 10.1016/0011-2240(90)90030-8 · PMID: 2379417

Study URL: https://pubmed.ncbi.nlm.nih.gov/2379417/

Study type: in_vitro

Zhurnal mikrobiologii, epidemiologii i immunobiologii · 1990 · PubMed

Combined microwave radiation plus hydrogen peroxide decreased P. aeruginosa viability by 1.5–2 times compared with the isolated action of each factor. Electron microscopy showed deterioration of surface structures and the nuclear and ribosomal apparatus under isolated or combined exposures, with maximum ultrastructural changes after combined action.

PMID: 2124021

Study URL: https://pubmed.ncbi.nlm.nih.gov/2124021/

Study type: in_vitro

Bioelectromagnetics · 1990 · PubMed

In L5178Y mouse leukemic cells, simultaneous exposure to 2.45-GHz pulsed-wave radiofrequency radiation (SAR ~40 W/kg for 4 h) and proflavin did not produce a statistically significant increase in induced mutant frequency compared with proflavin alone. No change in mutant colony-size distribution was observed, and no mutagenic action of the RFR exposure alone was detected under these conditions.

DOI: 10.1002/bem.2250110206 · PMID: 2242050

Study URL: https://pubmed.ncbi.nlm.nih.gov/2242050/

Study type: animal

Gigiena truda i professional'nye zabolevaniia · 1990 · PubMed

In 150 rats exposed to microwave radiation (8 mm; 80 mVt/cm2) for 5 hours/day over 3 days, elevated blood viscosity (hyperviscosity) was observed using rotation and ultrasound viscometers at low and high shear frequencies. Hematocrit did not change; the viscosity increase was attributed mainly to decreased erythrocyte deformability and increased stability of erythrocyte aggregates, with decreased erythrocyte mechanical resistance reported after exposure.

PMID: 2328920

Study URL: https://pubmed.ncbi.nlm.nih.gov/2328920/

Study type: animal

Biofizika · 1990 · PubMed

A differential effect of 915 MHz microwave radiation (500 Hz amplitude modulation; 1 ms pulses) on the morphofunctional state of mouse 8-cell embryos was reported. Development was not disturbed by irradiation for 15 to 20 minutes.

PMID: 2083277

Study URL: https://pubmed.ncbi.nlm.nih.gov/2083277/

Study type: case_control

European journal of cancer (Oxford, England : 1990) · 1990 · PubMed

In a French case-control study (185 cases, 513 controls), occupational exposure to EMF other than from arc welding was associated with a significantly increased risk of acute leukaemia (odds ratio 4.04, 95% CI 1.26–12.88), persisting after adjustment for possible confounding exposures.

DOI: 10.1016/0277-5379(90)90266-v · PMID: 2149992

Study URL: https://pubmed.ncbi.nlm.nih.gov/2149992/

Study type: animal

Teratology · 1990 · PubMed

PEMF at 20 and 50 Hz inhibited >50% of mouse blastocyst hatching and further development within 72 h in culture. In rat embryo culture, 50 and 70 Hz PEMF were associated with malformations (22% and 30%) and growth/developmental delay; TEM showed no significant pathological changes, while SEM noted yolk sac surface changes at 50 and 70 Hz. In vivo exposure of pregnant rats (20, 50, 100 Hz) was associated with slightly reduced litter average, weight changes, and delayed eye opening in offspring, with no malformations observed.

DOI: 10.1002/tera.1420420207 · PMID: 2218943

Study URL: https://pubmed.ncbi.nlm.nih.gov/2218943/

Study type: other

Gigiena i sanitariia · 1990 · PubMed

The study analyzed effects of combined EMF with wavelengths of 10 and 0.8 cm at various energy current density levels on central nervous system, metabolic processes, immune resistance, and reproductive function. Based on the obtained data, maximum allowable EMF levels for prospective two-channel meteorological radars were established.

PMID: 2283071

Study URL: https://pubmed.ncbi.nlm.nih.gov/2283071/

Study type: case_control

American journal of epidemiology · 1990 · PubMed

In this case-control study, reported electric blanket use was similar in cases and controls (age-adjusted RR=1.0, 95% CI 0.7–1.4), and duration distributions were also similar. By subtype, electric blanket use was slightly lower for seminoma (RR=0.7, 95% CI 0.5–1.2) and slightly higher for nonseminoma germ cell tumors (RR=1.4, 95% CI 0.9–2.3). The authors conclude that EMF exposure from electric blankets contributes little, if at all, to testicular cancer risk in this population.

DOI: 10.1093/oxfordjournals.aje.a115565 · PMID: 2321619

Study URL: https://pubmed.ncbi.nlm.nih.gov/2321619/

Science (New York, N.Y.) · 1990 · PubMed

DOI: 10.1126/science.2218509 · PMID: 2218509

Study URL: https://pubmed.ncbi.nlm.nih.gov/2218509/