[Changes in the glycogen content of the dog myocardium at various phases of the cardiac cycle with a normal coronary blood flow].
Alterations in content of glycogen in myocardium of isolated heart of dog were studied at different phases of heart cycle by means of a special apparatus for myocardial biopsy and prompt freezing. Significant alterations in content of glycogen were observed during heart contraction. The maximal decrease (by 30.7%) in content of glycogen was found in preparations, obtained immediately after the R peak of electrocardiogramm. During the later steps of refractory period an increase in content of glycogen was observed and at the point, positioned 0.25 sec apart from the R peak, content of glycogen exceeded by 91.7% the initial level.
D000818:Animals; D001706:Biopsy / Q000379:methods; D005117:Cardiac Complexes, Premature / Q000378:metabolism; D003326:Coronary Circulation; D004285:Dogs; D004562:Electrocardiography; D006003:Glycogen / Q000032:analysis / Q000378:metabolism*; D006339:Heart Rate; D006652:Histological Techniques; D008853:Microscopy / Q000379:methods; D009206:Myocardium / Q000378:metabolism*; D010092:Oximetry; D010477:Perfusion; D012039:Regional Blood Flow; D013997:Time Factors; D014465:Ultrasonics
D006003:Glycogen
Izmeneniia soderzhaniia glikogena v miokarde sobaki v raznye fazy serdechnogo tsikla pri normal'nom koronarom krovotoke