Nitric OxideSuperoxidesNitric Oxide SynthaseSuperoxide DismutaseNitric Oxide Synthase Type IINitric Oxide Synthase Type IIINitric Oxide DonorsNitric Oxide Synthase Type ING-Nitroarginine Methyl EsterNitritesArginineEnzyme Inhibitorsomega-N-MethylarginineNitratesNitrogen OxidesEndothelium, VascularS-Nitroso-N-AcetylpenicillamineOxidative StressAmino Acid OxidoreductasesCyclic GMPNitroprussideFree Radical ScavengersCatalasePenicillamineVasodilationOxidesReactive Oxygen SpeciesRats, Sprague-DawleyMolsidomineNADPH OxidaseHydrogen PeroxideCells, CulturedPeroxynitrous AcidRats, WistarAntioxidantsCyclic N-OxidesOxidation-ReductionVasodilator AgentsGuanylate CyclaseXanthine OxidaseNitroarginineFree RadicalsDose-Response Relationship, DrugS-NitrosoglutathioneOxygenNADPH DehydrogenaseS-NitrosothiolsLipopolysaccharidesEnzyme InductionAcetylcholineParaquatMacrophagesRNA, MessengerMice, Inbred C57BLZinc OxideAortaDitiocarbNeutrophilsGlutathioneElectron Spin Resonance SpectroscopyBlood PressureTime FactorsIndazolesSignal TransductionOxadiazolesOxidantsLipid PeroxidationDisease Models, AnimalVasoconstrictionMetalloporphyrinsGlutathione PeroxidaseGene Expression Regulation, EnzymologicGuanidinesSpin LabelsMice, KnockoutExhalationMuscle, Smooth, VascularMalondialdehydeEnzyme ActivationBlotting, WesternBreath TestsReactive Nitrogen SpeciesCattleNitroblue TetrazoliumHydrazinesMitochondriaMuscle RelaxationSpin TrappingEndothelial CellsAdministration, InhalationLuminescent MeasurementsAorta, ThoracicNitrosationCopperTumor Necrosis Factor-alphaArteriolesHydroxyl RadicalKineticsCell LineIsoenzymes