title: [Electron-microscopy analysis of the myocardium of rats developed in hypergravity].
abstract: The results of the quantitative electron-microscopy investigation of the left heart myocardium in rats continuously exposed to 2 G in the pre- and postnatal (75 days) ontogenesis evidence formation of a cardiac hystiocyte ultrastructure in support of the functioning of the left ventricle myocardium against chronically high blood weight. Mechanisms of the functional adaptation of cardiac hystiocytes to 2 G do not correspond to mechanisms observed by other authors in adult rats chronically exposed to hypergravity (2 G) which infers a better effectiveness of adaptation mechanisms formed in the course of pre- and postnatal ontogenesis.
mesh_terms: D000222:Adaptation, Physiological; D000818:Animals; D005260:Female; D006352:Heart Ventricles / Q000378:metabolism; D006644:Histiocytes / Q000378:metabolism; D018471:Hypergravity; D008854:Microscopy, Electron / Q000379:methods*; D009206:Myocardium / Q000378:metabolism*; D011247:Pregnancy; D051381:Rats; D017208:Rats, Wistar