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  • Title: [Results of endocrinolgic studies of the 3rd international crew of the scientific orbital station complex; Soyuz 29 - Salyut 6 - Soyuz 31 (joint space flight enterprise of the USSR - GDR). 2. Hormones and biologically active substances in blood].
    Author: Tigranjan RA, Haase H, Kalita NF, Ivanov VM, Pavlova EA, Afonin BV, Voronin LI, Jarsumbeck B.
    Journal: Endokrinologie; 1982 Jul; 80(1):37-41. PubMed ID: 6756900.
    Abstract:
    Cortisol, insulin, somatotropin, thyreotropin, thyroxine, triiodothyronine, testosterone, aldosterone, c-AMP, c-GMP, prostaglandins (PGF1-x, PGF2-x, PGA + E), and renin concentrations in serum or plasma of the venous blood of the third international crew of the scientific orbital complex of "Soyuz 29 - Salyut 6 - Soyuz 31" were determined following the 7-day space flight. The increased activity of the renin-angiotensin-aldosterone system before the flight as well as variations in the pressor/depressor prostaglandin ratios indicate an increased strain during the pre-flight period. During the first stage of the post-flight period some parameters were changed due to the landing process and the returning to earth gravity. The associated physical load and the onset of reactions for enhancement of the orthostatic tolerance resulted in an increase of cyclic nucleotid and thyroxine concentrations. The relatively higher levels of the pressor PGs of group F in comparison with the prostaglandins A + E could be evaluated as a compensatory reaction for enhancement of the orthostatic tolerance. The cortisol and STH concentrations increased with growing motor activity. The variations seen after the 7-day space flight were essentially within the reference areas. It may be assumed that the readaptation was not yet totally accomplished by the 8th day after landing.
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