Abstract
The content of lipid peroxidation (LPO) products (diene conjugates (DC), malondialdehyde (MDA), Schiff bases (SB), and tocopherol (TP, a main lipid antioxidant) were measured in blood serum of 17 astronauts taking part in long-term (125–217 days) missions on board the International Space Station (ISS) during the preflight period, on the day of the landing, and on the 7th and 14th days after landing (the rehabilitation period, RP). A decrease in the DC and MDA levels against a background of an increase in TP has been found in a group of eight astronauts after landing on board the Space Shuttle spacecraft and a group of eight astronauts after a space flight on board the Soyuz TM in the course of RP. The changes in measured indices were more pronounced in the group of astronauts after the space flight on board the Space Shuttle spacecraft. Inhibition of LPO during RP was regarded as an adequate response to readaptation stress to the conditions on earth. The possible mechanisms of differences in the efficiency of LPO inhibition between groups are discussed: the changes in the biomembrane phase state under the conditions of deceleration load during disorbiting and the stressful reaction to landing on board different spacecrafts.
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Original Russian Text © O.A. Zhuravleva, B.V. Morukov, A.A. Markin, L.V. Vostrikova, I.V. Zabolotskaya, 2011, published in Fiziologiya Cheloveka, 2011, Vol. 37, No. 3, pp. 92–97.
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Zhuravleva, O.A., Morukov, B.V., Markin, A.A. et al. Lipid peroxidation rate and the antioxidant protection system during the readaptation period after long-term space flights on board the International Space Station. Hum Physiol 37, 347–350 (2011). https://doi.org/10.1134/S0362119711030170
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DOI: https://doi.org/10.1134/S0362119711030170