[Functional morphology of the myosatellitocytes in ontogenesis of higher vertebrates and man].
By means of electron microscopic radioautography of RNA and DNA synthesis, morphometry of satellite cells, transmissive electron microscopy applying photometric scanning of the image, a successive development and maturation of myosatellites has been studied in ontogenesis of hens, rats and the man. The initial muscle cells for simplasts are promyoblasts. At the stage of myotubes and young muscle fibres, structural and functional heterogeneity of the satellite cells in the myotubes takes place. It is possible to distinguish satellite promyoblasts (the cells which are at the state of proliferative rest, interact with simplasts, intensively synthesize RNA, temporarily do not fuse with simplasts but have certain metabolic connection with them). Subsequently, promyocytes form myosatellitocytes of the I type, they are constantly found in small amount in the muscle fibre composition during the whole course of the animal's ontogenesis. According to the morphological classification, promyoblasts and promyocytes belong to myosatellitocytes of the II type. When studying myosatellitogenesis in the animals, no other sources of cell production have been found.
D000375:Aging; D000818:Animals; D002467:Cell Nucleus / Q000378:metabolism / Q000648:ultrastructure; D002642:Chick Embryo; D002645:Chickens; D004247:DNA / Q000096:biosynthesis; D005260:Female; D005333:Fetus / Q000648:ultrastructure; D006614:Hindlimb / Q000196:embryology; D006801:Humans; D007866:Leg; D008855:Microscopy, Electron, Scanning; D009132:Muscles / Q000196:embryology / Q000648:ultrastructure*; D011247:Pregnancy; D012313:RNA / Q000096:biosynthesis; D051381:Rats
D012313:RNA; D004247:DNA
Funktsional'naia morfologiia miosatellitotsitov v ontogeneze vysshikh pozvonochnykh i cheloveka.