Biomedical subjects

V M Posadskaia

Publications and source records attributed to V M Posadskaia.

5 recordsLinked to original sources

PubMed1978

[Temperature reaction and survival of experimental animals exposed to microwaves of different intensity].

Changes of the rectal temperature during the day were determined in CBA mice and Wistar rats subjected to the total body irradiation with microwaves of different intensity. Dependence of these indices on keeping the animals in containers for irradiation and temperature reactions, and survival of the animals after exposure to UHF microwaves of various intensity were investigated. As shown, temperature rise and survival of the animals depended on the current intensity density and the action duration, the rectal temperature elevation during the irradiation; a pronounced reduction of this index following irradiation may be considered as a prognostic sign of affection with the UHF microwave field.

Animals↗

PubMedDate not supplied

[Effects of microwave radiation on conditioned behavior of rats].

Research has been carried out to investigate the effects of microwave exposure (7 GHz, surface energy density 10-50 mW/cm2, SAR 2.1-10.5 W/kg) on learned behaviors of rats in the paradigm of conditioned avoidance reflex. It was shown that transitory reductions in conditioned behavior after acute microwave exposure occurred at an SAR equal to the intensity of rat basal metabolism. It was found cumulative effects for intermittent exposures of rats at a power density of 10 mW/cm2.

Animals↗

PubMedDate not supplied

[Effects of the microwave exposure at elevated ambient temperature on the thermo-compensatory responses of small laboratory animals].

Thermogenic effectiveness of electromagnetic irradiation (EMI) of UHF range (7 GHz) in the dependence on intensity (10-50 mW/cm2) and environmental temperature (22 degrees and 30 degrees C) was studied in experiments with mice and rats. Negative influence of high ambient temperature on thermoregulate responses of animals at microwave exposure was showed. It is concluded that this interaction should been taken into account for hygienic standardization of non-ionizing EMI.

Animals↗

PubMedDate not supplied

[Radiation-induced and embryotoxic effects in experimental hyperthyroidism].

The purpose of this article was investigation the development of the posterity rat (line Wistar) in the postnatal ontogenesis after combined and separate action of gamma-radiation (1.25 Gy at 20 days) and hyperthyroidism, provoked by toxic thyroid doses of 100 mg thyroidin per rat. It was shown that hyperthyroidism did not affect physical development of the irradiated posterity, but in a long-time period (7 month) it was revealed a decrease in ability to the training of posterity rats after the combined action of the factors.

Animals↗

PubMedDate not supplied

[Experimental assessment of adaptive possibilities after chronic prenatal exposure to gamma irradiation at various absorbed doses].

The purpose of the investigation is the study of dose-response relationship at the antenatal exposure of low level ionizing radiation (137Cs, 1.0-1.25; 1.7-1.9 and 2.3-2.5 Gy during 20 days). The decrease of body weight in pregnant females and antenatal embryonic mortality at the doses 2.3-2.5 Gy are revealed. Physical postnatal anomalies with decrease of the adaptation were estimated by the strength endurance after antenatal exposure of gamma-rays at the doses of 1.0-2.5 Gy.

Abnormalities, Radiation-Induced↗