NorepinephrineSympathetic Nervous SystemSynaptosomesDesipramineNorepinephrine Plasma Membrane Transport ProteinsSympathetic Fibers, PostganglionicAdrenergic alpha-AgonistsTyramineReceptors, Adrenergic, alpha-2Adrenergic alpha-AntagonistsReceptors, Histamine H3Adrenergic FibersAdrenergic Uptake InhibitorsAdrenergic alpha-2 Receptor AntagonistsHistamine AgonistsNerve EndingsReceptors, Adrenergic, alphaMethoxyhydroxyphenylglycolYohimbineCatecholaminesElectric StimulationEpinephrineClonidineIdazoxanVeratrineAdrenergic alpha-2 Receptor AgonistsRats, Sprague-DawleyNeurotransmitter Uptake Inhibitorsomega-Conotoxin GVIAMicrodialysisDioxanesDopamine beta-HydroxylaseDigitalis GlycosidesGalaninHypothalamus, AnteriorHeartDose-Response Relationship, DrugLocus CoeruleusGuinea PigsPhentolamineMedetomidineAdrenergic NeuronsMyocardiumRats, Inbred StrainsMyocardial IschemiaDogsCalciumRats, Inbred SHRDopamineBlood PressureGanglia, SympatheticNeuropeptide YHeart RateRats, Inbred WKYReceptors, Adrenergic, betaAdenylate Cyclase ToxinReceptors, Purinergic P1HypothalamusAngiotensin IIPropranololHeart AtriaRats, WistarPertussis ToxinInfusions, Intra-ArterialVirulence Factors, BordetellaTritiumSaphenous VeinSynaptic TransmissionCalcium Channel BlockersNicotineIsoproterenolHemodynamicsCalcium Channels, N-TypeImidazolesForearmMedulla OblongataTime FactorsQuinoxalinesPC12 CellsHistamine ReleaseHypertensionReceptors, AngiotensinNeuronsVasoconstrictor AgentsReceptors, NicotinicNeurotransmitter AgentsNitric OxideHippocampusOuabainMyocardial Reperfusion InjuryReceptors, AdrenergicSerotoninAnalysis of VarianceSympathomimeticsVasoconstrictionCells, CulturedAdrenergic AgentsAcetylcholineAnoxiaPeptides