Reactive Oxygen SpeciesNitric OxideNitric Oxide SynthaseOxygenOxidative StressNitric Oxide Synthase Type IIHydrogen PeroxideNitric Oxide Synthase Type IIIAntioxidantsNitric Oxide DonorsNADPH OxidaseFree Radical ScavengersNitric Oxide Synthase Type ISuperoxide DismutaseMitochondriaOxidation-ReductionOxygen ConsumptionSuperoxidesCatalaseAcetylcysteineEnzyme InhibitorsCells, CulturedOxidantsApoptosisNG-Nitroarginine Methyl EsterSignal TransductionGlutathioneNitritesArginineMembrane Potential, MitochondrialReactive Nitrogen SpeciesRats, Sprague-DawleyEndothelium, VascularLipid PeroxidationDose-Response Relationship, DrugXanthine OxidaseNitratesomega-N-MethylarginineCyclic N-OxidesNitrogen OxidesOnium CompoundsCell SurvivalOxidesSinglet OxygenEnzyme ActivationCell DeathRats, WistarFree RadicalsMice, Inbred C57BLS-Nitroso-N-AcetylpenicillamineCell LineTime FactorsBlotting, WesternVasodilationCyclic GMPHydroxyl RadicalNitroprussideRNA, MessengerMice, KnockoutAmino Acid OxidoreductasesCell Line, TumorPenicillaminePeroxynitrous AcidAnoxiaDNA DamageGlutathione PeroxidaseLuminescent MeasurementsAscorbic AcidDisease Models, AnimalRotenoneMacrophagesAcetophenonesXanthineLipopolysaccharides1,2-Dihydroxybenzene-3,5-Disulfonic Acid Disodium SaltEndothelial CellsNF-kappa BModels, BiologicalVasodilator AgentsGene Expression Regulation, EnzymologicRespiratory BurstMolsidomineCytochromes cMetalloporphyrinsPhosphorylationUp-RegulationCaspase 3NADPH DehydrogenaseMitochondrial ProteinsCalciumVitamin K 3Oxygen Inhalation TherapyMitochondria, HeartMuscle, Smooth, VascularCell HypoxiaNeutrophilsGuanylate CyclaseS-NitrosoglutathioneMalondialdehydeSpin Labels