Cyclic GMPNitric OxideGuanosine MonophosphateNitric Oxide SynthaseGuanylate CyclasePhosphodiesterase 5 InhibitorsAtrial Natriuretic FactorNitric Oxide Donors3',5'-Cyclic-GMP PhosphodiesterasesSulfonesCyclic GMP-Dependent Protein KinasesNitroprussidePurinonesGuanosineCyclic Nucleotide Phosphodiesterases, Type 5PurinesMethylene BlueDibutyryl Cyclic GMPCyclic Nucleotide Phosphodiesterases, Type 2Phosphodiesterase InhibitorsNitric Oxide Synthase Type IINitric Oxide Synthase Type IIINucleotides, CyclicCyclic AMPReceptors, Atrial Natriuretic FactorArgininePenisPenile ErectionNitrites8-Bromo Cyclic Adenosine MonophosphateGMP ReductaseMuscle RelaxationErectile DysfunctionNelumboPiperazinesomega-N-MethylarginineNG-Nitroarginine Methyl EsterPhosphoric Diester HydrolasesVasodilator AgentsEnzyme InhibitorsDose-Response Relationship, DrugCyclic GMP-Dependent Protein Kinase Type IAorta, ThoracicVasodilationMuscle, Smooth, VascularNitric Oxide Synthase Type ICyclic Nucleotide Phosphodiesterases, Type 6NitratesRats, Sprague-DawleyCells, CulturedNatriuretic Peptide, C-TypeSecond Messenger SystemsEndothelium, VascularSignal TransductionFerricyanides1-Methyl-3-isobutylxanthineNatriuresisS-Nitroso-N-AcetylpenicillamineGuanosine 5'-O-(3-Thiotriphosphate)Natriuretic Peptide, BrainCitrullineAcetylcholineBlood PressureOxadiazolesGuanosine TriphosphateNitroglycerinRabbitsEnzyme ActivationKineticsRats, Wistar3',5'-Cyclic-AMP PhosphodiesterasesDisease Models, AnimalRats, Inbred StrainsHemodynamicsTime FactorsMuscle, SmoothCalciumBlood PlateletsKidneyNorepinephrineAmino Acid OxidoreductasesPenicillamineMolsidomineVerbenaceaeHeart FailureDogsBlotting, WesternPhosphorylationGuanosine TetraphosphateGuanosine DiphosphateNitrogen OxidesAortaGuanine NucleotidesTheophyllineCattleInosine MonophosphateCyclic CMPRNA, MessengerOxidesBucladesine