[Effect of hypokinesia and lowered barometric pressure on the tolerance of animals to the action of ethyl acetate]. 1975

G P Tikhonova, and G I Solomin, and Iu P Bizin, and Iu V Shevchenko, and V A Shchirskaia

Experiments were carried out to study the resistance of rats to an acute effect of ethylacetate vapors at concentrations of 25 to 69 g/m-3 after their 20-day exposure to hypokinesia and 20-day exposure to altitudes of 3200 and 5000 m. The effect of ethylacetate at concentrations of 47 and 10 mg/m-3 on the rats in a chronic 90-day experiments was also investigated. After an exposure to hypokinesia and hypoxia the sensitivity of the rats to an acute effect of ethylacetate vapors increased 2- or 3-fold. The chronic inhalation of the substance by the hypokinetic animals brought about disorders in the brain microstructure and renal pathology. The poisoned animals that retained normal motor activity displayed serious pathological changes in the thyroid gland. It is concluded that changes in the reactivity of the animal and human body to chemical agents must be taken into consideration when developing standards for the space cabin atmosphere.

UI MeSH Term Description Entries
D007103 Immobilization The restriction of the MOVEMENT of whole or part of the body by physical means (RESTRAINT, PHYSICAL) or chemically by ANALGESIA, or the use of TRANQUILIZING AGENTS or NEUROMUSCULAR NONDEPOLARIZING AGENTS. It includes experimental protocols used to evaluate the physiologic effects of immobility. Hypokinesia, Experimental,Experimental Hypokinesia,Experimental Hypokinesias,Hypokinesias, Experimental
D008297 Male Males
D000085 Acetates Derivatives of ACETIC ACID. Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain the carboxymethane structure. Acetate,Acetic Acid Esters,Acetic Acids,Acids, Acetic,Esters, Acetic Acid
D000222 Adaptation, Physiological The non-genetic biological changes of an organism in response to challenges in its ENVIRONMENT. Adaptation, Physiologic,Adaptations, Physiologic,Adaptations, Physiological,Adaptive Plasticity,Phenotypic Plasticity,Physiological Adaptation,Physiologic Adaptation,Physiologic Adaptations,Physiological Adaptations,Plasticity, Adaptive,Plasticity, Phenotypic
D000531 Altitude A vertical distance measured from a known level on the surface of a planet or other celestial body. Altitudes
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000860 Hypoxia Sub-optimal OXYGEN levels in the ambient air of living organisms. Anoxia,Oxygen Deficiency,Anoxemia,Deficiency, Oxygen,Hypoxemia,Deficiencies, Oxygen,Oxygen Deficiencies
D001274 Atmospheric Pressure The pressure at any point in an atmosphere due solely to the weight of the atmospheric gases above the point concerned. Atmospheric Pressures,Pressure, Atmospheric,Pressures, Atmospheric
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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