Subcellular myocardial effects of verapamil and D600: comparison with propranolol.

Action Potentials/drug effects Adenylyl Cyclase Inhibitors Adenylyl Cyclases/analysis Adrenergic beta-Antagonists/pharmacology Animals Calcium/antagonists & inhibitors,metabolism Calcium Radioisotopes Cell Membrane/enzymology Cyclic AMP/analysis,metabolism Epinephrine/pharmacology Guinea Pigs Heart/drug effects In Vitro Techniques Isoproterenol/pharmacology Myocardium/enzymology,ultrastructure Propranolol/pharmacology Sarcoplasmic Reticulum/drug effects,metabolism Spectrophotometry, Ultraviolet Time Factors Tritium Verapamil/analogs & derivatives,pharmacology

Adenylyl Cyclase Inhibitors Adrenergic beta-Antagonists Calcium Radioisotopes Tritium Propranolol Verapamil Cyclic AMP Adenylyl Cyclases Isoproterenol Calcium Epinephrine