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  • Title: [Catecholamines and the enzymes of their synthesis in the adrenal medulla of rats after a flight on the Cosmos-936 biosatellite].
    Author: Kwietnanski R, Torda T, Tigranian RA, Chulman J, Genin AM.
    Journal: Kosm Biol Aviakosm Med; 1981; 15(4):64-5. PubMed ID: 6115090.
    Abstract:
    In the adrenals of weightless and centrifuged rats flown for 18.5 days onboard the biosatellite Cosmos-936 indicators of the activity of the adrenomedullary system, i.e. the content of catecholamines and activity of the enzymes involved in their synthesis--tyrosine hydroxylase and dopamine-beta-hydroxylase--were measured. It was found that none of the indicators changed postflight. These findings show that a prolonged exposure of rats to weightlessness does not act as a strong stressor for the adrenomedullary system.
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