Lack of interaction between norepinephrine or histamine and theophylline on cardiac cyclic AMP.
D000818:Animals; D000242:Cyclic AMP / Q000378:metabolism*; D004347:Drug Interactions; D004789:Enzyme Activation / Q000187:drug effects; D005021:Ethylamines / Q000494:pharmacology; D005260:Female; D006168:Guinea Pigs; D006321:Heart / Q000187:drug effects*; D006632:Histamine / Q000494:pharmacology*; D008297:Male; D009206:Myocardium / Q000378:metabolism*; D009638:Norepinephrine / Q000494:pharmacology*; D010477:Perfusion; D010656:Phenylephrine / Q000494:pharmacology; D010726:Phosphodiesterase Inhibitors; D006005:Phosphorylases / Q000378:metabolism; D011720:Pyrazoles / Q000494:pharmacology; D051381:Rats; D013806:Theophylline / Q000494:pharmacology*; D013997:Time Factors; D014230:Triazoles / Q000494:pharmacology
D005021:Ethylamines; D010726:Phosphodiesterase Inhibitors; D011720:Pyrazoles; D014230:Triazoles; D010656:Phenylephrine; D006632:Histamine; D013806:Theophylline; D000242:Cyclic AMP; D006005:Phosphorylases; D009638:Norepinephrine