Phosphodiesterase InhibitorsRolipramCyclic Nucleotide Phosphodiesterases, Type 33',5'-Cyclic-AMP PhosphodiesterasesCyclic Nucleotide Phosphodiesterases, Type 44-(3-Butoxy-4-methoxybenzyl)-2-imidazolidinonePurinonesPhosphoric Diester Hydrolases3',5'-Cyclic-GMP PhosphodiesterasesPhosphodiesterase 4 InhibitorsPhosphodiesterase 3 InhibitorsPhosphodiesterase 5 InhibitorsCyclic AMPPhosphodiesterase ICyclic Nucleotide Phosphodiesterases, Type 1Cyclic Nucleotide Phosphodiesterases, Type 52',3'-Cyclic-Nucleotide Phosphodiesterases1-Methyl-3-isobutylxanthineCyclic GMPCyclic Nucleotide Phosphodiesterases, Type 2Cyclic Nucleotide Phosphodiesterases, Type 6MilrinoneSulfonesTheophyllineCyclic Nucleotide Phosphodiesterases, Type 7Adenylate CyclasePyrrolidinonesCyclic AMP-Dependent Protein KinasesColforsinPurinesKineticsTransducinBucladesineRod Cell Outer SegmentPapaverineNucleotides, Cyclic8-Bromo Cyclic Adenosine MonophosphatePhotoreceptor CellsEnzyme ActivationVinca AlkaloidsCalmodulinPyrophosphatasesIsoproterenolCattleXanthinesCalciumMolecular Sequence DataPiperazinesIsoenzymesThionucleotidesDictyosteliumGuanylate CyclaseSecond Messenger SystemsCells, CulturedPyridazinesSignal TransductionDose-Response Relationship, DrugAmino Acid SequenceCyclic GMP-Dependent Protein KinasesRetinal Rod Photoreceptor CellsAmrinoneGlycerylphosphorylcholineRana catesbeianaPentoxifyllineAminophyllineHydrolysisCyclic IMPCyclopropanesCarbolinesIsoquinolinesCell MembraneReceptors, Cyclic AMPNucleotidasesBase SequenceErectile DysfunctionPhosphorylationAminopyridinesGuanosine TriphosphateCyclic AMP Response Element-Binding ProteinEnzyme InhibitorsEnoximoneAlprostadilPhosphoinositide Phospholipase CPyridonesCell LineRats, Sprague-DawleySubstrate SpecificityRats, Inbred Strains2',3'-Cyclic Nucleotide 3'-PhosphodiesteraseRNA, MessengerProtein KinasesGuinea PigsAdrenergic beta-Agonists