[Monoamine oxidase activity in the brain during adaptation to cold and simultaneous exposure to cold and hyperbaric oxygenation].
One--day cold exposure decreases the monoamine oxidase type A activity by 52--54% (serotonin and noradrenaline substrates); the monoamine oxidase type B activity by 14%. Three--day cold exposure leaves the monoamine oxidase type B activity unchanged and decreases the monoamine oxidase type A activity by 29--32%; the enzyme of the latter type acquires the ability for deamination of glucosamine, putrescine and GABA. Under cold adaptation (45 days, 2 degrees C) the monoamine oxidase type A activity remains reduced as on the 3rd day, the type B activity decreases by 19%; enzyme substrate specificity does not change at all. Preliminary cold adaptation prevents alteration of the monoamine oxidase substrate specificity under hyperbaric oxygenation.
D000064:Acclimatization; D000222:Adaptation, Physiological; D000818:Animals; D001274:Atmospheric Pressure; D001921:Brain / Q000201:enzymology*; D003080:Cold Temperature; D005260:Female; D006931:Hyperbaric Oxygenation; D008297:Male; D008928:Mitochondria / Q000201:enzymology; D008995:Monoamine Oxidase / Q000378:metabolism*; D010100:Oxygen; D051381:Rats; D013379:Substrate Specificity
D008995:Monoamine Oxidase; D010100:Oxygen
Aktivnost' monoaminoksidaz mozga pri kholodovoĭ adaptatsii i sovmestnom deĭstvii kholoda i giperbarooksigenatsii.