title: [Mineral phase and protein matrix status of rat bony tissue after a flight on the Kosmos-1129 biosatellite].
abstract: The major parameters of the mineral component and protein matrix of bones were investigated in 30 rats flown onboard Cosmos-1129. Postflight, the content of calcium decreased by 7.8%, that of phosphorus diminished by 11.8%, the Ca/P ratio increased by 5.9%, the content of collagen diminished by 14.7% and that of non-collagenous proteins by 45.7% and the content of sialic and hexuronic acids increased by 36.2% and 14.6%, respectively, as compared to the vivarium controls. The paper discusses the role of EDTA-and HCl-protein extracts, soluble and poorly soluble calcium fractions, protein-Ca-phosphate complex, sialic and hexuronic acids in the mechanism of calcium binding by the bone organic matrix.
mesh_terms: D000818:Animals; D001857:Bone Matrix / Q000032:analysis*; D001842:Bone and Bones / Q000032:analysis*; D002118:Calcium / Q000032:analysis; D003094:Collagen / Q000032:analysis; D008903:Minerals / Q000032:analysis*; D010758:Phosphorus / Q000032:analysis; D011506:Proteins / Q000032:analysis*; D051381:Rats; D013026:Space Flight; D013997:Time Factors; D014586:USSR
chemical_list: D008903:Minerals; D011506:Proteins; D010758:Phosphorus; D003094:Collagen; D002118:Calcium
vernacular_title: Sostoianie mineral'noĭ fazy i belkovogo matriksa kostnoĭ tkani krys posle poleta na biosputnike "Kosmos-1129".