AdenosineReceptors, Purinergic P1Receptor, Adenosine A2AReceptor, Adenosine A3Receptor, Adenosine A1Purinergic P1 Receptor AgonistsPurinergic P1 Receptor AntagonistsReceptor, Adenosine A2BXanthinesAdenosine A2 Receptor AgonistsAdenosine-5'-(N-ethylcarboxamide)Adenosine A2 Receptor AntagonistsReceptors, Adenosine A2Adenosine A1 Receptor AgonistsReceptors, PurinergicAdenosine A1 Receptor AntagonistsAdenosine A3 Receptor AntagonistsAdenosine A3 Receptor AgonistsAdenosine DeaminasePhenethylaminesPhenylisopropyladenosineTheophylline2-ChloroadenosineAdenosine KinaseTriazinesTheobrominePurinergic AntagonistsAdenosine MonophosphateCyclic AMP5'-NucleotidaseTriazolesRadioligand AssayPurinesInosineAminophyllineTubercidinNorbornanesDipyridamoleCaffeineAdenylate CyclaseDose-Response Relationship, DrugThioinosineBinding, CompetitiveVasodilator AgentsNucleoside Transport ProteinsAdenine NucleotidesAdenineGuinea PigsCells, CulturedRats, Sprague-DawleyCricetinaeThionucleosidesCHO CellsColforsinSignal TransductionAdenosine TriphosphatasesMyocardiumAdenosine Deaminase InhibitorsMice, KnockoutNucleosidesDeoxyadenosines4-(3-Butoxy-4-methoxybenzyl)-2-imidazolidinoneKineticsRats, WistarHyperemiaIschemic Preconditioning, MyocardialMice, Inbred C57BLPhosphodiesterase InhibitorsGTP-Binding ProteinsAminopyridinesEquilibrative Nucleoside Transporter 1Pertussis ToxinVasodilationCyclohexanecarboxylic AcidsCell MembraneStructure-Activity RelationshipHypoxanthineNucleoside Deaminases1-Methyl-3-isobutylxanthineIodobenzenesCalciumTritiumApyraseAffinity LabelsGlyburideGTP-Binding Protein alpha Subunits, GsCoformycinCoronary CirculationDogsHeartReceptors, Purinergic P2Heart RateDideoxyadenosineLigandsCyclic AMP-Dependent Protein KinasesReperfusion InjuryTime FactorsEnzyme InhibitorsPerfusionXanthine