title: Methacholine-induced attenuation of methylisobutylxanthine- and isoproterenol-elevated cyclic AMP levels in isolated rat atria.
mesh_terms: D015056:1-Methyl-3-isobutylxanthine / Q000037:antagonists & inhibitors*; D000818:Animals; D000242:Cyclic AMP / Q000378:metabolism*; D006152:Cyclic GMP / Q000378:metabolism; D004558:Electric Stimulation; D005260:Female; D066298:In Vitro Techniques; D007545:Isoproterenol / Q000037:antagonists & inhibitors*; D008688:Methacholine Compounds / Q000494:pharmacology*; D009206:Myocardium / Q000378:metabolism*; D051381:Rats; D013806:Theophylline / Q000031:analogs & derivatives*
chemical_list: D008688:Methacholine Compounds; D013806:Theophylline; D000242:Cyclic AMP; D006152:Cyclic GMP; D007545:Isoproterenol; D015056:1-Methyl-3-isobutylxanthine