The Effects of Radiation and Hindlimb Unloading on Rat Bone Marrow Progenitor Cells
- Authors: Markina E.A.1, Kokhan V.S.1, Roe M.P.1, Andrianova I.V.1, Shtemberg A.S.1, Buravkova L.B.1
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Affiliations:
- Institute of Biomedical Problems
- Issue: Vol 12, No 3 (2018)
- Pages: 183-196
- Section: Article
- URL: https://journals.rcsi.science/1990-519X/article/view/212643
- DOI: https://doi.org/10.1134/S1990519X18030069
- ID: 212643
Cite item
Abstract
Bone marrow cells of mesenchymal origin play an important role in adaptation of physiological systems to space flight. Hematopoiesis, immunity, and homeostasis of bone tissue depend on their functional activity. An investigation that was carried out in the framework of the Bion and Bion-M programs showed a decrease of the number of rat bone marrow hematopoietic progenitors and the inhibition of lympho- and erythropoiesis when the granulocyte-macrophage linage was activated. A negative influence on nonhematopoietic bone marrow cells was also revealed. The pathogenetic influence of radiation and microgravity on the bone marrow progenitor cells has remained unclear so far. The goal of this research was to study the effect of a 30-day unloading and 6 days of γ-irradiation on rat bone marrow progenitor cells. The study was conducted on male rats of four groups: vivarium control (VC), hindlimb unloading (HU), irradiation (IR), and combined action (HU + IR). The following parameters have been examined: the number of bone marrow mononuclear cells, proliferative activity of marrow mononuclear cells, immunophenotype, number of hematopoietic CFU and CFU-f, and differentiation potency of hematopoietic and stromal bone marrow precursors. It was found that the cellularity and proliferation activity of rat bone marrow cells did not change under simulation of space flight. The number of CFU-f was decreased. Irradiation was accompanied by an increase in the hematopoietic cell share among total bone marrow mononuclear cells, while their activity was attenuated. The osteopotential of the stromal precursors was unchanged. Adipogenic differentiation was stimulated with irradiation. The functional activity of bone marrow progenitor cells was restored after 2 weeks of recovery. Thus, 30-day simulation of space flight factors negatively affected the morphofunctional properties of rat bone marrow progenitor cells. These effects were reversible upon 2 weeks of recovery.
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About the authors
E. A. Markina
Institute of Biomedical Problems
Author for correspondence.
Email: goncharova-tim@list.ru
Russian Federation, Moscow, 123007
V. S. Kokhan
Institute of Biomedical Problems
Email: goncharova-tim@list.ru
Russian Federation, Moscow, 123007
M. P. Roe
Institute of Biomedical Problems
Email: goncharova-tim@list.ru
Russian Federation, Moscow, 123007
I. V. Andrianova
Institute of Biomedical Problems
Email: goncharova-tim@list.ru
Russian Federation, Moscow, 123007
A. S. Shtemberg
Institute of Biomedical Problems
Email: goncharova-tim@list.ru
Russian Federation, Moscow, 123007
L. B. Buravkova
Institute of Biomedical Problems
Email: goncharova-tim@list.ru
Russian Federation, Moscow, 123007