Novel Na+/Ca2+ Exchanger Inhibitor ORM-10962 Supports Coupled Function of Funny-Current and Na+/Ca2+ Exchanger in Pacemaking of Rabbit Sinus Node Tissue
Background and PurposeThe exact mechanism of spontaneous pacemaking is not fully understood.Recent results suggest tight cooperation between intracellular Ca2+ handling and sarcolemmal ion channels.An important player of this crosstalk is the Na+/Ca2+ exchanger (NCX), however, direct pharmacological evidence was unavailable so far because of the la