Endothelin-1EndothelinsVasoconstrictor AgentsVasoconstrictionReceptors, EndothelinReceptor, Endothelin AUrotensinsReceptor, Endothelin BHydroxyeicosatetraenoic AcidsMuscle, Smooth, VascularThromboxanesPeptides, CyclicAngiotensin IIThromboxane A2Vascular ResistanceMesenteric ArteriesEndothelium, VascularBlood PressureRegional Blood FlowAspartic Acid EndopeptidasesProtein PrecursorsDose-Response Relationship, DrugVasodilator AgentsMetalloendopeptidasesArteriesNitric OxideKidneyRats, Sprague-DawleyHemodynamicsMicrocirculationAorta, ThoracicRats, WistarNorepinephrinePulmonary ArteryHypertensionCells, CulturedHypertension, PulmonaryAortaCoronary VesselsEnzyme InhibitorsRNA, MessengerSulfonamidesPhenylephrinePeptidesSympathetic Nervous SystemVasomotor System15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidRabbitsVasodilationTime FactorsCalciumMethoxamineForearmRenal CirculationTyramineArteriolesGene ExpressionProstaglandin Endoperoxides, SyntheticNG-Nitroarginine Methyl EsterPotassium ChlorideIndomethacinAdrenergic alpha-AgonistsPerfusionReceptors, ThromboxaneNitroprussideDogsSplanchnic CirculationSerotoninMuscle TonusMolecular Sequence DataNordefrinNitric Oxide SynthaseProstaglandinsAcetylcholineViper VenomsRenal ArteryAdrenergic alpha-AntagonistsSumatriptanPulmonary CirculationArginine VasopressinAdrenergic alpha-1 Receptor AgonistsLaser-Doppler FlowmetryHeart RateAdrenergic FibersSkin TemperatureBlood VesselsPhentolamineAstringentsBretylium CompoundsSympathetic Fibers, PostganglionicNitroarginineomega-N-MethylarginineHindlimbTailPlethysmographyArginineCyclooxygenase InhibitorsBretylium TosylateVasopressinsNeuropeptide Y