Abstract
By a method of spectroscopy of electron paramagnetic resonance the tissues of rats after exposure of microgravity simulation (model of hindlimb unloading) were investigated. In the tissues of heart, lung, liver and muscles the signals of electron magnetic resonance (EMR) depending on orientation were detected. The temperature and orientation dependences of the signals were studied. Comprehensive analysis of the characteristics of the EMR signals made it possible to identify the source of the signals as a crystalline magnetite. Three types of anisotropic EMR signals corresponding to a variety of spatial forms of accumulation of biogenic magnetite were detected. The appearance of the signals after microgravity simulation indicates an alteration in iron metabolism and an abnormal accumulation of iron in the rat tissues.
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Acknowledgments
The present research by EPR spectroscopy was carried out under the support of Scientific Program of Presidium of RAS 1.26 P during 2015–2016 and rat tissue samples after simulated microgravity model were obtained within the support of Grant RFBR 15-04-05951. V.N. Efimov is also grateful for financial support by the subsidy allocated to Kazan Federal University for the state assignment in the sphere of scientific activities.
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Yurtaeva, S.V., Efimov, V.N., Yafarova, G.G. et al. EPR Detection of Iron Storage in Rat Tissues After Simulated Microgravity Model. Appl Magn Reson 47, 555–565 (2016). https://doi.org/10.1007/s00723-016-0779-3
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DOI: https://doi.org/10.1007/s00723-016-0779-3