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  • Title: [Hormonal regulation of calcium metabolism after space flights of different duration].
    Author: Pozharskaia LG, Noskov VB.
    Journal: Kosm Biol Aviakosm Med; 1990; 24(4):18-20. PubMed ID: 2214659.
    Abstract:
    This paper presents the results of examinations of 19 cosmonauts, 12 of whom made 7-day flights and 7 took part in space flights of 150, 211 or 237 days. In plasma, parathyrin, calcitonin and gastrin concentrations were measured. A complex mosaic of hormonal regulation of bone metabolism reflects multifactorial and flexible patterns of calcium homeostasis, with individual variations included. It is probable that the specific weight of different components of the system maintaining calcium homeostasis varies depending on the exposure time and activity of related regulatory systems.
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