[Two types of electromechanical coupling in myocardial myocytes].
Sarcoplasmic reticulum (SR) of isolated myocytes of guineapigs deprived of Ca2+ by means of short exposure of the cell to caffeine does not re-uptake Ca in the quiescent cell. In rat Ca2+ SR content is promptly recovered under the same experimental conditions. The results of this study confirm the two types of excitation-contraction coupling in isolated myocyes of gineapig and rat hearts: without Ca uptake and with Ca uptake between excitations, respectively.
Lewartowski
B
B
Zakładu Fizjologii Klinicznej Centrum Medycznego Kształcenia Podyplomowego w Warszawie.
Zdanowski
K
K
D000818:Animals; D002110:Caffeine / Q000494:pharmacology; D002118:Calcium / Q000378:metabolism*; D006168:Guinea Pigs; D066298:In Vitro Techniques; D009200:Myocardial Contraction / Q000502:physiology*; D009206:Myocardium / Q000378:metabolism; D051381:Rats
D002110:Caffeine; D002118:Calcium
Dwa typy sprzezenia elektromechanicznego w miocytach serca.