1992
Roles of intracellular cAMP and protein kinase A in the actions of dopamine and neurotensin on midbrain dopamine neurons
Shi W, Bunney B. Roles of intracellular cAMP and protein kinase A in the actions of dopamine and neurotensin on midbrain dopamine neurons. Journal Of Neuroscience 1992, 12: 2433-2438. PMID: 1318960, PMCID: PMC6575923, DOI: 10.1523/jneurosci.12-06-02433.1992.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCyclic AMPDopamineIntracellular MembranesMaleMesencephalonNeural InhibitionNeuronsNeurotensinProtein KinasesRatsRats, Inbred StrainsConceptsDopamine-induced inhibitionEffects of neurotensinDopamine neuronsIntracellular cAMPAdenylate cyclaseAction of neurotensinRat midbrain slicesAction of dopamineVentral tegmental areaMidbrain dopamine neuronsIntracellular cAMP levelsMidbrain slicesSubstantia nigraTegmental areaDopamine cellsDopamine effectsSpontaneous activityModulatory effectsNeurotensinIsobutyl methylxanthineInhibitory effectNeuronsCAMP levelsProtein kinase CInhibition
1991
Effects of neurotensin on midbrain dopamine neurons: Are they mediated by formation of a neurotensin—dopamine complex?
Shi W, Bunney B. Effects of neurotensin on midbrain dopamine neurons: Are they mediated by formation of a neurotensin—dopamine complex? Synapse 1991, 9: 157-164. PMID: 1776128, DOI: 10.1002/syn.890090302.Peer-Reviewed Original ResearchConceptsEffects of neurotensinNeurotensin receptorsDopamine neuronsDopamine cellsCell activitySingle-unit recording techniquesFiring rateMidbrain dopamine neuron activityAction of neurotensinBasal firing rateDopamine receptor blockadeDopamine-induced inhibitionDopamine neuron activityMidbrain dopamine neuronsReceptor blockadeDepolarization inactivationExcitatory effectsNative neurotensinBrain slicesNeuron activityNeurotensinNeurotensin analoguesSame receptorRecording techniquesReceptorsRepetitive firing properties of putative dopamine-containing neurons in vitro: regulation by an apamin-sensitive Ca2+-activated K+ conductance
Shepard P, Bunney B. Repetitive firing properties of putative dopamine-containing neurons in vitro: regulation by an apamin-sensitive Ca2+-activated K+ conductance. Experimental Brain Research 1991, 86: 141-150. PMID: 1756785, DOI: 10.1007/bf00231048.Peer-Reviewed Original ResearchConceptsAction potentialsPutative dopamine-containing neuronsEffects of apaminDopamine-containing neuronsIntracellular recording techniquesPost-spike afterhyperpolarizationRepetitive firing propertiesTypes of Ca2Apamin-sensitive Ca2Adaptive neuronal responsesZona compactaSubstantia nigraBath applicationInhibitory periodNeuronal responsesAfterhyperpolarizationApaminFiring propertiesRecording techniquesCellular mechanismsElectroresponsive propertiesFrequency adaptationSelective inhibitorInterspike intervalsNeuronsNeurotensin modulates autoreceptor mediated dopamine effects on midbrain dopamine cell activity
Shi W, Bunney B. Neurotensin modulates autoreceptor mediated dopamine effects on midbrain dopamine cell activity. Brain Research 1991, 543: 315-321. PMID: 1676331, DOI: 10.1016/0006-8993(91)90043-u.Peer-Reviewed Original ResearchConceptsDA cellsCell activityFiring rateDA cell activityInteraction of neurotensinGlutamate-induced excitationEffects of neurotensinMidbrain dopamine cell activityDopamine cell activityMidbrain dopamine neuronsSpecific D2 agonistMicroiontophoretic techniquesD2 agonistDopamine neuronsD2 receptorsDopamine effectsSpontaneous activityNeurotensinNT effectsLocal ejectionInhibitionSignificant changesCellsCell levelSame cells
1990
Neurotensin attenuates dopamine D2 agonist quinpirole-induced inhibition of midbrain dopamine neurons
Shi W, Bunney B. Neurotensin attenuates dopamine D2 agonist quinpirole-induced inhibition of midbrain dopamine neurons. Neuropharmacology 1990, 29: 1095-1097. PMID: 1982340, DOI: 10.1016/0028-3908(90)90119-c.Peer-Reviewed Original ResearchConceptsD2 agonistDA cellsSingle-unit recording techniquesMidbrain DA neuronsCentral DA systemsDopamine D2 agonistMidbrain dopamine neuronsSpecific D2 agonistDA neuronsIntracerebroventricular administrationDopamine neuronsSpontaneous activityDA systemInhibitory effectRecording techniquesAgonistsNeuronsBiochemical studiesCellsQuinpiroleNeurotensinRatsAdministrationEffect ofl-glutamate on the release of striatal dopamine: in vivo dialysis and electrochemical studies
Moghaddam B, Gruen R, Roth R, Bunney B, Adams R. Effect ofl-glutamate on the release of striatal dopamine: in vivo dialysis and electrochemical studies. Brain Research 1990, 518: 55-60. PMID: 1975217, DOI: 10.1016/0006-8993(90)90953-9.Peer-Reviewed Original ResearchConceptsN-methyl-D-aspartate receptor antagonistVivo voltammetryExtracellular DA concentrationsMM GluDA outflowStriatal dopamineReceptor antagonistExtracellular dopamineRat striatumVivo dialysisMicrodialysis probeLocal applicationBasal levelsExtracellular concentrationPathophysiological conditionsVivo releaseDA concentrationDopamineL-glutamateField potentialsIonic changesSignificant increaseSelective microelectrodesDepressionStriatumAcute Effects of Typical and Atypical Antipsychotic Drugs on the Release of Dopamine from Prefrontal Cortex, Nucleus Accumbens, and Striatum of the Rat: An In Vivo Microdialysis Study
Moghaddam B, Bunney B. Acute Effects of Typical and Atypical Antipsychotic Drugs on the Release of Dopamine from Prefrontal Cortex, Nucleus Accumbens, and Striatum of the Rat: An In Vivo Microdialysis Study. Journal Of Neurochemistry 1990, 54: 1755-1760. PMID: 1969939, DOI: 10.1111/j.1471-4159.1990.tb01230.x.Peer-Reviewed Original ResearchConceptsMedial prefrontal cortexOutflow of dopamineRelease of dopamineNucleus accumbensAntipsychotic drugsPrefrontal cortexAcute effectsExtracellular levelsAtypical antipsychotic drug clozapineVivo microdialysis studyAtypical antipsychotic drugsEffects of sulpirideEffects of haloperidolAntipsychotic drug clozapineMicrodialysis studyVivo microdialysisDrug clozapineHaloperidolStriatumAccumbensCortexSulpirideExtracellular concentrationDopamineDrugsCharacterization of dopamine release in the rat medial prefrontal cortex as assessed by in vivo microdialysis: Comparison to the striatum
Moghaddam B, Roth R, Bunney B. Characterization of dopamine release in the rat medial prefrontal cortex as assessed by in vivo microdialysis: Comparison to the striatum. Neuroscience 1990, 36: 669-676. PMID: 2234405, DOI: 10.1016/0306-4522(90)90009-s.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCalciumCarbolinesCorpus StriatumDialysisDopamineFrontal LobeMalePotassiumRatsRats, Inbred StrainsConceptsMedial prefrontal cortexRat medial prefrontal cortexPrefrontal cortexCortical dopamineDopamine releaseChloral hydrate-anesthetized ratsBeta-carboline FG 7142Dopamine release processBasal releasePara-tyrosineVivo microdialysisDopamine levelsFG 7142Local perfusionExtracellular dopamineAlpha-methylExtracellular levelsFmol/StriatumPharmacological manipulationCortexBasal levelsMicrodialysisStimulation conditionsDopamine
1989
Topographical organization of the efferent projections of the medial prefrontal cortex in the rat: An anterograde tract‐tracing study with Phaseolus vulgaris leucoagglutinin
Sesack S, Deutch A, Roth R, Bunney B. Topographical organization of the efferent projections of the medial prefrontal cortex in the rat: An anterograde tract‐tracing study with Phaseolus vulgaris leucoagglutinin. The Journal Of Comparative Neurology 1989, 290: 213-242. PMID: 2592611, DOI: 10.1002/cne.902900205.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBrain MappingFrontal LobeMaleNeural PathwaysPhytohemagglutininsRatsRats, Inbred StrainsConceptsEfferent projectionsPhaseolus vulgaris leucoagglutininTopographical organizationInjection sitePrelimbic areaAnterograde tract‐tracing studyBasal forebrain nucleiAnterior olfactory nucleusLaterodorsal tegmental nucleusMesencephalic trigeminal nucleusIntralaminar thalamic nucleiMedullary reticular formationTract-tracing studiesDeep mesencephalic nucleusPeriaqueductal gray regionCytoarchitectonic divisionsCentral gray areaMedial prefrontal cortexVentral midbrain tegmentumOlfactory nucleusRaphe nucleusPrelimbic divisionLateral hypothalamusMesencephalic nucleusTrigeminal nucleusThe effect of acute and chronic treatment with SCH 23390 on the spontaneous activity of midbrain dopamine neurons
Esposito E, Bunney B. The effect of acute and chronic treatment with SCH 23390 on the spontaneous activity of midbrain dopamine neurons. European Journal Of Pharmacology 1989, 162: 109-113. PMID: 2656273, DOI: 10.1016/0014-2999(89)90609-2.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBenzazepinesDopamineDopamine AntagonistsElectrophysiologyHaloperidolMaleMesencephalonNeuronsRatsRats, Inbred StrainsSubstantia NigraConceptsSubstantia nigra pars compactaVentral tegmental areaActive DA neuronsSCH 23390Chronic treatmentDA neuronsDopamine neuronsDepolarization blockSpontaneous activityDA receptor blockadeAcute subcutaneous injectionGroups of ratsMidbrain dopamine neuronsChronic haloperidolReceptor blockadeChronic administrationPars compactaTegmental areaAntipsychotic drugsSubcutaneous injectionChronic experimentsMarked reductionNeuronsTreatmentHaloperidolPharmacological characterization of the receptor mediating electrophysiological responses to dopamine in the rat medial prefrontal cortex: a microiontophoretic study.
Sesack S, Bunney B. Pharmacological characterization of the receptor mediating electrophysiological responses to dopamine in the rat medial prefrontal cortex: a microiontophoretic study. Journal Of Pharmacology And Experimental Therapeutics 1989, 248: 1323-33. PMID: 2564893.Peer-Reviewed Original ResearchConceptsRat medial prefrontal cortexMedial prefrontal cortexGamma-aminobutyric acidD2-selective agonistsSelective agonistPrefrontal cortexPFC neuronsInhibitory effectSelective antagonistExtracellular single-unit recordingsD1-selective agonistsSingle-unit recordingsD1-selective antagonistD2-selective antagonistWeak antagonist activityMicroiontophoretic studyMicroiontophoretic techniquesSuperficial laminaeIontophoretic applicationLY171555Pharmacological characterizationInhibitory responsesMajority of cellsPharmacological characteristicsPharmacological profile
1988
The effects of pertussis toxin on autoreceptor-mediated inhibition of dopamine synthesis in the rat striatum.
Bean A, Shepard P, Bunney B, Nestler E, Roth R. The effects of pertussis toxin on autoreceptor-mediated inhibition of dopamine synthesis in the rat striatum. Molecular Pharmacology 1988, 34: 715-8. PMID: 2974120.Peer-Reviewed Original ResearchConceptsPertussis toxin injectionDopamine synthesisToxin injectionDopamine autoreceptorsRat striatumPertussis toxinAutoreceptor-mediated inhibitionDopamine agonist apomorphineG proteinsAgonist apomorphineUnilateral administrationControl ratsSystemic administrationStriatal tissueEffects of activationAutoreceptorsApomorphineStriatumRatsAdministrationInjectionToxinActivationStriataAgonistsEffects of apamin on the discharge properties of putative dopamine-containing neurons in vitro
Shepard P, Bunney B. Effects of apamin on the discharge properties of putative dopamine-containing neurons in vitro. Brain Research 1988, 463: 380-384. PMID: 3196925, DOI: 10.1016/0006-8993(88)90414-3.Peer-Reviewed Original ResearchConceptsDopamine-containing neuronsPutative dopamine-containing neuronsEffects of apaminCalcium-activated potassium conductanceCalcium-activated potassium channelsBrain slice preparationApamin administrationSubstantia nigraSlice preparationNeuronal excitabilityBursting activityPotassium conductancePotassium channelsNeuronsSelective inhibitorApaminRegular activitiesExcitabilityAdministrationNigraExcitability properties of medial forebrain bundle axons of A9 and A10 dopamine cells
Yeomans J, Maidment N, Bunney B. Excitability properties of medial forebrain bundle axons of A9 and A10 dopamine cells. Brain Research 1988, 450: 86-93. PMID: 3261193, DOI: 10.1016/0006-8993(88)91547-8.Peer-Reviewed Original ResearchIntracellular studies of dopamine neurons in vitro: pacemakers modulated by dopamine
Silva N, Bunney B. Intracellular studies of dopamine neurons in vitro: pacemakers modulated by dopamine. European Journal Of Pharmacology 1988, 149: 307-315. PMID: 3409955, DOI: 10.1016/0014-2999(88)90661-9.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsDopamineIn Vitro TechniquesMaleMembrane PotentialsMesencephalonNeuronsRatsRats, Inbred StrainsSulpirideTetrodotoxinConceptsSensitive neuronsInput resistanceAdministration of DADA-sensitive neuronsSelective D2 antagonistPacemaker-like activityHigh input resistanceZona compactaDA actionD2 antagonistDopamine neuronsIntracellular recordingsFiring rateIntracellular studyNeuronsReversal potentialTissue slicesDopamineHyperpolarizationSulpirideAntagonistCompactaAdministration
1987
Activity of A9 and A10 dopaminergic neurons in unrestrained rats: further characterization and effects of apomorphine and cholecystokinin
Freeman A, Bunney B. Activity of A9 and A10 dopaminergic neurons in unrestrained rats: further characterization and effects of apomorphine and cholecystokinin. Brain Research 1987, 405: 46-55. PMID: 3032350, DOI: 10.1016/0006-8993(87)90988-7.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsApomorphineAuditory PerceptionBrain MappingDopamineMaleRatsRats, Inbred StrainsSincalideSynaptic TransmissionTegmentum MesencephaliTouchConceptsCCK-8A9 neuronsDA neuronsDopaminergic neuronsUnrestrained ratsVentral tegmental area cellsFiring rateCCK-8 pretreatmentDA cell activitySingle dopaminergic neuronsEffects of apomorphineA10 dopaminergic neuronsActivity of A9Sulfated CCK-8A10 neuronsDA agonistsAnesthetized ratsParalyzed ratsSequential dosesA10 cellsCell activityCell firingUnit firingUnit activityApomorphinePopulation response of midbrain dopaminergic neurons to neuroleptics: further studies on time course and nondopaminergic neuronal influences
Chiodo L, Bunney B. Population response of midbrain dopaminergic neurons to neuroleptics: further studies on time course and nondopaminergic neuronal influences. Journal Of Neuroscience 1987, 7: 629-633. PMID: 2881987, PMCID: PMC6569064, DOI: 10.1523/jneurosci.07-03-00629.1987.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntipsychotic AgentsDopamineElectrophoresisHaloperidolMaleMesencephalonNeuronsProglumideRatsRats, Inbred StrainsTime FactorsConceptsDepolarization-induced inactivationFiring rateDopaminergic neuronsDopamine receptor agonist apomorphineMonths' continuous treatmentAcute oral administrationBasal firing rateActive DA neuronsReceptor agonist apomorphineA10 dopaminergic neuronsActive dopamine neuronsClassical antipsychotic drugsDopamine-containing neuronsPresence of haloperidolHr of administrationLong-term treatmentMidbrain dopaminergic neuronsCholecystokinin receptor antagonistAge-matched controlsHaloperidol resultsA10 regionDA neuronsAcute administrationAgonist apomorphineNeuroleptic haloperidol
1986
Induction of depolarization block in midbrain dopamine neurons by repeated administration of haloperidol: analysis using in vivo intracellular recording.
Grace A, Bunney B. Induction of depolarization block in midbrain dopamine neurons by repeated administration of haloperidol: analysis using in vivo intracellular recording. Journal Of Pharmacology And Experimental Therapeutics 1986, 238: 1092-100. PMID: 3746660.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsApomorphineCorpus StriatumGamma-Aminobutyric AcidHaloperidolMaleMembrane PotentialsRatsRats, Inbred StrainsReceptors, DopamineSubstantia NigraConceptsAdministration of haloperidolDopamine neuronsVivo intracellular recordingsDepolarization blockIntracellular recordingsNigral dopamine neuronsAdministration of neurolepticsActive dopamine neuronsSpontaneous spike activityDopamine agonist apomorphineAntipsychotic drug haloperidolSpontaneous electrophysiological activityMidbrain dopamine neuronsAcute administrationAgonist apomorphineSubstantia nigraControl ratsExcitatory driveDepolarization blockadeDrug haloperidolSpontaneous activitySpike activityFiring rateHaloperidolNeurons
1985
Possible mechanisms by which repeated clozapine administration differentially affects the activity of two subpopulations of midbrain dopamine neurons
Chiodo L, Bunney B. Possible mechanisms by which repeated clozapine administration differentially affects the activity of two subpopulations of midbrain dopamine neurons. Journal Of Neuroscience 1985, 5: 2539-2544. PMID: 2863337, PMCID: PMC6565310, DOI: 10.1523/jneurosci.05-09-02539.1985.Peer-Reviewed Original ResearchConceptsDA neuronsClozapine administrationChronic treatmentDepolarization inactivationExtracellular single cell recording techniquesInhibitory neurotransmitter gamma-aminobutyric acidNeurotransmitter gamma-aminobutyric acidVentral tegmental area (VTA) dopamineSingle cell recording techniquesA10 DA neuronsVivo spontaneous activityMidbrain DA neuronsChloral hydrate anesthesiaCombination of drugsMidbrain dopamine neuronsGamma-aminobutyric acidDifferential effectsMechanism of actionAcute treatmentMicroiontophoretic applicationSubstantia nigraReceptor antagonistDA cellsDopamine neuronsSpontaneous activityAn electrophysiological analysis of the actions of the 3-PPP enantiomers on the nigrostriatal dopamine system
Clark D, Engberg G, Pileblad E, Svensson T, Carlsson A, Freeman A, Bunney B. An electrophysiological analysis of the actions of the 3-PPP enantiomers on the nigrostriatal dopamine system. Naunyn-Schmiedeberg's Archives Of Pharmacology 1985, 329: 344-354. PMID: 4033804, DOI: 10.1007/bf00496366.Peer-Reviewed Original ResearchConceptsPostsynaptic DA receptorsInhibitory actionDA autoreceptorsDA receptorsNeuronal activityDA cell firing rateExtracellular single-unit recordingsCaudate neuronal activityDA neuronal activityGallamine-paralyzed ratsNigrostriatal DA systemNigrostriatal dopamine systemSingle-unit recordingsCell firing rateReticulata neuronsDA agonistsDA cellsIntravenous administrationMajority of cellsDopamine systemN-propylpiperidineUnit recordingsPartial agonistCell activityFiring rate