IndomethacinCyclooxygenase InhibitorsAnti-Inflammatory Agents, Non-SteroidalProstaglandinsDinoprostoneProstaglandins EProstaglandin-Endoperoxide SynthasesDose-Response Relationship, DrugDuctus Arteriosus, PatentProstaglandin AntagonistsCyclooxygenase 1Stomach Ulcer4,5-Dihydro-1-(3-(trifluoromethyl)phenyl)-1H-pyrazol-3-amineIbuprofenArachidonic AcidsGastric Mucosa6-Ketoprostaglandin F1 alphaMasoprocolMeclofenamic AcidArachidonic AcidCyclooxygenase 2Cyclooxygenase 2 InhibitorsProstaglandins FAspirinEpoprostenolBradykininLipoxygenase InhibitorsVasodilationDrug InteractionsRats, Wistar16,16-Dimethylprostaglandin E2Nitric OxideTime FactorsBiological FactorsNitrobenzenes5,8,11,14-Eicosatetraynoic AcidRats, Sprague-DawleyTreatment OutcomeNG-Nitroarginine Methyl EsterNitroarginineGuinea PigsThromboxane B2AcetylcholineRabbitsVasoconstrictionDouble-Blind MethodRats, Inbred StrainsSulfonamidesMuscle RelaxationThromboxane A2Anti-Inflammatory AgentsDinoprostEndothelium, VascularAdministration, OralKetoprofenPyrazolesEdemaMuscle ContractionDuctus ArteriosusProstaglandins E, SyntheticPiroxicamDiclofenacHistaminePregnancySRS-AEnzyme InhibitorsVasodilator AgentsNitric Oxide SynthaseVasoconstrictor AgentsDrug Therapy, CombinationDipyroneThromboxanesMuscle, SmoothPhenylbutazoneBlood PressureQuinacrineKidneyCarrageenanNo-Observed-Adverse-Effect LevelSodium SalicylateSuppositoriesButanonesTracheaEicosanoidsDogsMesenteric Arteries15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidSulfonesIsoenzymesInfant, NewbornOssification, HeterotopicMuscle TonusSalicylatesLipoxygenaseRegional Blood FlowFlurbiprofenUlcerThromboxane-A SynthaseDrug Administration ScheduleCimetidine