Ciaravino V, Meltz ML, Erwin DN · 1991
Researchers exposed Chinese hamster ovary cells to adriamycin and pulsed RFR at 2,450 MHz and 33.8 W/Kg for 2 h. The maximal temperature in the tissue-culture medium was 39.7 +/- 0.2 degrees C. The experiments were controlled for chemical and RFR exposures as well as for temperature. Verified statistically, the data indicate that the RFR did not affect changes in cell progression caused by adriamycin and did not change the number of sister chromatid exchanges induced by adriamycin.
Nelson BK et al. · 1991
The exploratory study aimed to determine whether concurrent exposure to RF radiation and 2-methoxyethanol enhances developmental toxicity in rats. In the primary study, pregnant rats were exposed to RF radiation sufficient to raise rectal temperature to 42.0°C for 30 minutes and given 150 mg/kg 2-methoxyethanol by gavage, and the combination raised mean fetal malformations per litter to 76% from 14% with 2ME alone and 30% with RF alone. The severity of malformations also increased with the combination, scoring 6 on a relative severity scale compared with less than 1 for 2ME alone and 3 for RF alone.
Koveshnikov IV, Antipenko EN · 1991
Koveshnikova IV, Antipenko EN · 1991
Researchers studied whether thyroid hormones play a role in modifying the mutagenic effect of microwaves in rats. The mutagenic effect of microwaves at 2,450 or 2,750 MHz, 500 microW/cm2, for 30 days at 7 hours a day increased when rats had either low or high thyroid hormone levels. The researchers concluded that normal thyroid gland functioning appears to be an important condition for maintaining chromosome integrity under microwave exposure.
Garaj-Vrhovac V, Horvat D, Koren Z · 1991
Meltz ML, Eagan P, Erwin DN · 1990
Researchers studied forward mutation at the thymidine kinase locus in L5178Y mouse leukemic cells exposed to 2.45-GHz pulsed-wave RFR and proflavin. Exposures used 500 or 600 W net forward power, giving a SAR of approximately 40 W/kg, for 4 hours with temperature controls. No statistically significant increase in mutant frequency was found with combined RFR and proflavin versus proflavin alone, no change in colony-size distribution occurred, and RFR alone showed no mutagenic action.
Kerbacher JJ, Meltz ML, Erwin DN, · 1990
Garaj-Vrhovac V, Horvat D, Koren Z · 1990
Researchers exposed cultured V79 Chinese hamster cells to continuous microwave radiation at 7.7 GHz and a power density of 30 mW/cm2 for 15, 30, and 60 minutes. The study measured the incorporation of [3H]thymidine into DNA and the frequency of chromosome aberrations. Inhibition of [3H]thymidine incorporation occurred through complete prevention of DNA from entering into the S phase, and the normal rate of incorporation recovered within one generation cycle of V79 cells. Compared with control samples, irradiated cells showed a higher frequency of specific chromosome lesions.
Parker JE, Kiel JL, Winters WD · 1988
Researchers exposed four rodent cell lines to 2450 MHz microwave radiation at a Specific Absorption Rate of 103.5 +/- 4.2 W/kg at temperatures of 37, 40, 42, and 45 degrees C. The researchers extracted mRNA from exposed and sham-exposed cells and used DNA probes of oncogenes, heat shock protein, or long terminal repeat sequences to look for differences in mRNA expression. With the cell lines and probes used, no significant differences in mRNA expression were observed after microwave exposure.
Reba Goodman, Joan Abbott, Ann S. Henderson · 1987
Researchers exposed salivary gland cells from Sciara coprophila larvae to three magnetic field signals: a 72-Hz single repetitive pulse, a 15-Hz repetitive pulse burst, and a 72-Hz sine wave. Eight normally active X chromosome regions showed increased transcription, and three regions (Xc, B", Xf) became detectably active only after exposure. The sine wave and single pulse signals produced stronger transcriptional responses than the pulse train signal.
Unknown authors · 1987
Purified plasmid DNA was exposed to microwave radiation at nonthermal levels in the frequency range from 2.00 to 8.75 GHz. The exposure produced single- and double-strand breaks detected by agarose gel electrophoresis. Microwave-induced DNA damage depended on the presence of small amounts of copper. The effect was dependent on both microwave power and exposure duration. Cuprous ions, but not cupric ions, mimicked the microwave effects on DNA.
Unknown authors · 1986
The article was published in Int J Radiat Biol Relat Stud Phys Chem Med in July 1986. The authors are Sagripanti JL and Swicord ML. The title indicates DNA structural changes caused by microwave radiation.
Percival D. McCormack, Charles E. Swenberg · 1985
Unknown authors · 1983
Researchers tested a repetitive single pulse and a repetitive pulse train on transcription in dipteran salivary gland cells. The single pulse increased the specific activity of messenger RNA after 15 and 45 minutes of exposure. The pulse train increased specific activity only after 45 minutes of exposure.
Committee on the Biological Effects of Ionizing Radiations · 1980
Helen C. Chase · 1979
А. Д. Стржижковский, Г. В. Галактионова · 1976
S. J. BAUM et al. · 1976
Charles A. Cody et al. · 1975
Researchers used a custom Raman spectrometer assembled by Block Engineering personnel to obtain Raman spectra. Infrared spectra were recorded on a Digilab FTS-15 Fourier transform spectrophotometer. The program established that biological materials do damage when exposed to RF radiation and that molecular spectroscopy methods yield data needed to generate RF radiation hazard parameters. Raman spectroscopy encountered fluorescence and sensitivity problems, while infrared techniques appeared satisfactory from preliminary data but the effect of water-rich background matrices and the ability to do micro-damage assessment were not completely known.
Przemysław CZERSKI · 1974
W. D. SKIDMORE, S. J. BAUM · 1974
Multiple session chairmen and presenters including R.C. Baird et al. · 1974
Mattern IE, Roberti B · 1974
Researchers used radiation-sensitive mutants of Uscherichin coli and Salmonella tuphimurcun in the study. The mutants were employed to identify environmental pollutants that damaze DN. Liver homogenates were added to the test system to imitate in vivo metabolism. The study also investigated the effects of 3 iHl% microwaves on hrologic Vival and mutation taduction.
Rein, R. · 1974
Harte C · 1973
