Abstract
The effects on the immune system of a 520-day isolation in a confined environment, simulating some conditions of a manned space flight to Mars, have been studied. A set of signs of adaptational reorganization, including quantitative and functional changes in innate and adaptive immunity, have been recorded. The most significant ones include the changes in the system of Toll-like receptors (TLRs) manifested as a decrease in the content of circulating monocytes and granulocytes expressing TLR2, TLR4, and TLR6; a decrease in the functional capacity of cellular factors of natural cytotoxicity or natural killer cells (NK cells); an increased ability of T cells and B cells to express on their surface the CD69 early activation marker; and an increase in phytohaemagglutinin (PHA)-induced secretion by cytokines in peripheral blood mononuclear cells. Intense mobilization of adaptive immunity and qualitative changes of its functions demonstrates the adaptive adjustment of the body in response to the combined effect of unfavorable factors to preserve immune homeostasis.
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Original Russian Text © B.V. Morukov, M.P. Rykova, E.N. Antropova, T.A. Berendeeva, I.B. Morukov, S.A. Ponomarev, 2013, published in Fiziologiya Cheloveka, 2013, Vol. 39, No. 2, pp. 19–30.
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Morukov, B.V., Rykova, M.P., Antropova, E.N. et al. Immunological aspects of a space flight to Mars. Hum Physiol 39, 126–135 (2013). https://doi.org/10.1134/S0362119713020102
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DOI: https://doi.org/10.1134/S0362119713020102