Some observations on Ca-overload in rat ventricular tissue

respectively. We conclude that Ca ++ -antagonists can prevent the vit. D3-induced excessive rise in myocardial free intracellular Ca ++ -concentrations. In addition, we show that Ca ++ -selective microelectrodes constitute a suitable means for studying the effect of pharmacological agents on (Ca ++ )i. J Clin Basic Cardiol 1999; 2: 255–8.