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Bone Mineral Density and Molecular Genetic Markers of Bone Remodeling in Blood of Cosmonauts after Long-term Missions on Board the International Space Station

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Abstract

The results of the investigation of the bone system of 24 Russian cosmonauts after long-term (124–199 days) missions on board the International space station (ISS) are presented. Functional adaptation of the bone system involves some complex changes in the metabolic activity of osteoblasts and osteoclasts, such as alterations of the serum concentrations of osteocalcin, tartrate-resistant acid phosphatase (TRAP), osteoprotegerin, and the activator ligand of the receptor of nuclear factor kappa-B (RANKL); in addition, in peripheral blood leucocytes, there are changes in the expression of genes regulating the development of skeletal system and bone mineral metabolism. Significant variability in the mineral density of femoral neck and molecular genetic markers studied after long-term space flights indicates individual variability of the balance of the processes of bone remodeling, bone formation and resorption. Significant bone mass losses in the femoral bone of cosmonauts are associated with more pronounced changes in the markers of metabolic activity of osteoclasts.

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Authors and Affiliations

  1. Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, 123007, Russia

    V. E. Novikov, M. P. Rykova, E. N. Antropova, T. A. Berendeeva, S. A. Kalinin, G. Yu. Vassilieva & S. A. Ponomarev

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  1. V. E. Novikov
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  2. M. P. Rykova
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  3. E. N. Antropova
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  4. T. A. Berendeeva
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  5. S. A. Kalinin
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  6. G. Yu. Vassilieva
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  7. S. A. Ponomarev
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Correspondence to M. P. Rykova.

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Original Russian Text © V.E. Novikov, M.P. Rykova, E.N. Antropova, T.A. Berendeeva, S.A. Kalinin, G.Yu. Vassilieva, S.A. Ponomarev, 2017, published in Fiziologiya Cheloveka, 2017, Vol. 43, No. 6, pp. 88–94.

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Novikov, V.E., Rykova, M.P., Antropova, E.N. et al. Bone Mineral Density and Molecular Genetic Markers of Bone Remodeling in Blood of Cosmonauts after Long-term Missions on Board the International Space Station. Hum Physiol 43, 686–692 (2017). https://doi.org/10.1134/S0362119717060068

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  • DOI: https://doi.org/10.1134/S0362119717060068

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