title: Influence of isoproterenol and methylisobutylxanthine on the contractile and cyclic nucleotide effects of methacholine in isolated rat atria.
mesh_terms: D015056:1-Methyl-3-isobutylxanthine / Q000494:pharmacology*; D000818:Animals; D002118:Calcium / Q000494:pharmacology; D000242:Cyclic AMP / Q000032:analysis / Q000502:physiology*; D006152:Cyclic GMP / Q000032:analysis / Q000502:physiology*; D003864:Depression, Chemical; D004347:Drug Interactions; D005260:Female; D006325:Heart Atria / Q000187:drug effects; D066298:In Vitro Techniques; D007545:Isoproterenol / Q000494:pharmacology*; D008688:Methacholine Compounds / Q000494:pharmacology*; D009200:Myocardial Contraction / Q000187:drug effects*; D010042:Ouabain / Q000494:pharmacology; D051381:Rats; D013268:Stimulation, Chemical; D013806:Theophylline / Q000031:analogs & derivatives*
chemical_list: D008688:Methacholine Compounds; D010042:Ouabain; D013806:Theophylline; D000242:Cyclic AMP; D006152:Cyclic GMP; D007545:Isoproterenol; D002118:Calcium; D015056:1-Methyl-3-isobutylxanthine