[Intracellular oxidative-reductive processes in tissues in hyperthermia]. 1993

R I Seferova, and I D Manenkova, and N L Avetisova

Experiments were conducted on male albino rats to study some intracellular metabolites (lactate, pyruvate, malate, glutamate, alpha-ketoglutarate, ammonia) and the redox process in the tissues of the liver, kidneys, myocardium, and skeletal muscles during hyperthermia (40 degrees C for one hour and 45 degrees C for one hour). Changes of the metabolite content and shifts in the redox process in the direction of oxidation in the liver and kidneys at both levels of hyperthermia are evidence of the development of tissue hypoxia of circulatory character in these organs. The mitochondrial NAD/NADH ratio in the myocardium reduced in moderate hyperthermia and increased during a heat stroke. There were no signs of cellular hypoxia in the skeletal muscles. It is concluded on basis of the results that changes of the blood flow in the organs play the leading role in the origin of thermal hypoxia.

UI MeSH Term Description Entries
D008297 Male Males
D010084 Oxidation-Reduction A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471). Redox,Oxidation Reduction
D001833 Body Temperature Regulation The processes of heating and cooling that an organism uses to control its temperature. Heat Loss,Thermoregulation,Regulation, Body Temperature,Temperature Regulation, Body,Body Temperature Regulations,Heat Losses,Loss, Heat,Losses, Heat,Regulations, Body Temperature,Temperature Regulations, Body,Thermoregulations
D006358 Hot Temperature Presence of warmth or heat or a temperature notably higher than an accustomed norm. Heat,Hot Temperatures,Temperature, Hot,Temperatures, Hot
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
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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