title: Influence of caffeine and other methylxanthines on mechanical properties of isolated mammalian heart muscle. Evidence for a dual mechanism of action.
mesh_terms: D000200:Action Potentials; D000319:Adrenergic beta-Antagonists / Q000494:pharmacology; D000818:Animals; D001285:Atropine / Q000494:pharmacology; D002110:Caffeine / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D002118:Calcium / Q000037:antagonists & inhibitors / Q000494:pharmacology; D002127:Calcium Isotopes; D002415:Cats; D004558:Electric Stimulation; D006321:Heart / Q000187:drug effects*; D066298:In Vitro Techniques; D007545:Isoproterenol / Q000494:pharmacology; D009119:Muscle Contraction / Q000187:drug effects; D009638:Norepinephrine / Q000037:antagonists & inhibitors; D010210:Papillary Muscles / Q000187:drug effects* / Q000502:physiology; D011343:Procaine / Q000494:pharmacology; D011433:Propranolol / Q000494:pharmacology; D012110:Reserpine / Q000494:pharmacology; D013324:Strontium / Q000494:pharmacology; D013325:Strontium Isotopes; D013805:Theobromine / Q000494:pharmacology*; D013806:Theophylline / Q000494:pharmacology*; D013997:Time Factors
chemical_list: D000319:Adrenergic beta-Antagonists; D002127:Calcium Isotopes; D013325:Strontium Isotopes; D002110:Caffeine; D011343:Procaine; D001285:Atropine; D012110:Reserpine; D011433:Propranolol; D013806:Theophylline; D007545:Isoproterenol; D013805:Theobromine; D002118:Calcium; D009638:Norepinephrine; D013324:Strontium