Receptor, Endothelin AReceptors, EndothelinReceptor, Endothelin BEndothelinsInfusions, IntravenousEndothelin-1Infusions, ParenteralEndothelin-3Infusion PumpsEndothelin-2Peptides, CyclicViper VenomsInfusions, Intra-ArterialPhenylpropionatesSulfonamidesVasoconstrictionBlood PressurePyrrolidinesRats, Sprague-DawleyVasoconstrictor AgentsDose-Response Relationship, DrugAspartic Acid EndopeptidasesHemodynamicsPiperidinesAzepinesOligopeptidesInfusion Pumps, ImplantableIndansTime FactorsEndothelium, VascularVascular ResistanceDogsAntihypertensive AgentsKidneyMetalloendopeptidasesInfusions, SubcutaneousRats, WistarRenal CirculationAngiotensin IIRegional Blood FlowVasodilator AgentsNitric OxideHeart RateInfusions, IntralesionalHypertensionMuscle, Smooth, VascularHypertension, PulmonaryInjections, IntravenousPeptidesDrug Administration ScheduleRNA, MessengerProtein PrecursorsVasodilationAtrial Natriuretic FactorNorepinephrineForearmDisease Models, AnimalRats, Inbred StrainsDioxolesMyocardiumRats, Inbred WKYSwineInsulinSodium ChlorideCoronary VesselsCells, CulturedDiuresisSheepInsulin Infusion SystemsPulmonary ArteryNatriuresisMuscle ContractionRabbitsInfusions, IntraventricularBlood GlucosePerfusionEnzyme InhibitorsPhenylephrineomega-N-MethylarginineNitric Oxide SynthaseRats, Inbred SHRVasopressinsGlucoseNicardipineDansyl CompoundsRadioimmunoassayReninCalciumAortaNitroprussideMesenteric ArteriesIndolesTetrazolesDouble-Blind MethodPyrimidinesPyridazinesHome Infusion TherapyArteriolesHeartVasomotor System