1998
A comparison of the effects of clonidine and CNQX infusion into the locus coeruleus and the amygdala on naloxone-precipitated opiate withdrawal in the rat
Taylor J, Punch L, Elsworth J. A comparison of the effects of clonidine and CNQX infusion into the locus coeruleus and the amygdala on naloxone-precipitated opiate withdrawal in the rat. Psychopharmacology 1998, 138: 133-142. PMID: 9718282, DOI: 10.1007/s002130050655.Peer-Reviewed Original Research
1997
Dysregulation of Mesoprefrontal Dopamine Neurons Induced by Acute and Repeated Phencyclidine Administration in the Nonhuman Primate: Implications for Schizophrenia
Jentsch J, Elsworth J, Taylor J, Redmond D, Roth R. Dysregulation of Mesoprefrontal Dopamine Neurons Induced by Acute and Repeated Phencyclidine Administration in the Nonhuman Primate: Implications for Schizophrenia. Advances In Pharmacology 1997, 42: 810-814. PMID: 9328021, DOI: 10.1016/s1054-3589(08)60870-4.Peer-Reviewed Original ResearchConceptsPCP administrationAcute PCP administrationNegative symptomsDA systemMesoprefrontal dopamine neuronsSubcortical DA systemsBrains of patientsSchizophrenia-like symptomatologyDevelopment of neuropathologyDistinct behavioral effectsDAergic dysfunctionDA metabolismDAergic functionDopamine neuronsCognitive dysfunctionNovel agentsDeficits of schizophreniaFrontal cortexPsychotomimetic propertiesNeurobiological effectsDopamine systemPositive symptomsPhencyclidine administrationBehavioral effectsAdministration
1991
Anxiogenic β-carboline FG 7142 produces activation of noradrenergic neurons in specific brain regions of rats
Ida Y, Elsworth J, Roth R. Anxiogenic β-carboline FG 7142 produces activation of noradrenergic neurons in specific brain regions of rats. Pharmacology Biochemistry And Behavior 1991, 39: 791-793. PMID: 1784607, DOI: 10.1016/0091-3057(91)90166-y.Peer-Reviewed Original ResearchConceptsBrain noradrenergic activityFG 7142Specific brain regionsCerebral cortexNoradrenergic activityΒ-carboline FG 7142Brain regionsBeta-carboline FG 7142Rat brain noradrenalineBrain noradrenergic systemAntagonist Ro 15Brain noradrenalineAgonist clonidineNoradrenergic neuronsBZD receptorsMHPG levelsRo 15Sixty minNoradrenergic systemSame doseBenzodiazepine receptorsInverse agonistDihydroxyphenylglycolMajor metaboliteMetabolite levels
1988
Clonidine infusions into the locus coeruleus attenuate behavioral and neurochemical changes associated with naloxone-precipitated withdrawal
Taylor J, Elsworth J, Garcia E, Grant S, Roth R, Redmond D. Clonidine infusions into the locus coeruleus attenuate behavioral and neurochemical changes associated with naloxone-precipitated withdrawal. Psychopharmacology 1988, 96: 121-134. PMID: 3147472, DOI: 10.1007/bf02431544.Peer-Reviewed Original ResearchConceptsNaloxone-precipitated withdrawalDorsal parabrachial nucleusAlpha-2 adrenergic receptorsWet dog shakesLocus coeruleusClonidine infusionMHPG concentrationsOpiate withdrawalAlpha-2 adrenergic agonistsAnti-withdrawal actionWithdrawal-induced increasesBlood-brain barrierInfusion of clonidineNucleus locus coeruleusOccurrence of diarrheaClonidine's abilityLC infusionBrain concentrationsNoradrenergic neuronsST-91MHPG levelsPeripheral injectionWithdrawal signsNeurochemical changesParabrachial nucleus
1983
Panic-Induced Elevation of Plasma MHPG Levels in Phobic-Anxious Patients: Effects of Clonidine and Imipramine
Ko G, Elsworth J, Roth R, Rifkin B, Leigh H, Redmond D. Panic-Induced Elevation of Plasma MHPG Levels in Phobic-Anxious Patients: Effects of Clonidine and Imipramine. JAMA Psychiatry 1983, 40: 425-430. PMID: 6838322, DOI: 10.1001/archpsyc.1983.01790040079011.Peer-Reviewed Original ResearchConceptsPlasma MHPG levelsMHPG levelsEffects of clonidineSignificant symptom reductionPlasma MHPG concentrationSelf-rated anxietyPlacebo treatmentCrossover trialMHPG concentrationsPlasma levelsNoradrenergic activityDrug treatmentDrug trialsSymptom reductionDiminished suppressionPanic attacksPanic symptomsImipramine hydrochlorideClonidinePatientsPhobic stimuliImipramineTrialsAnxietyTreatment
1982
Clonidine suppression of noradrenergic hyperactivity during morphine withdrawal by clonidine: biochemical studies in rodents and primates.
Roth R, Elsworth J, Redmond D. Clonidine suppression of noradrenergic hyperactivity during morphine withdrawal by clonidine: biochemical studies in rodents and primates. The Journal Of Clinical Psychiatry 1982, 43: 42-6. PMID: 6806253.Peer-Reviewed Original ResearchConceptsBrain levelsMHPG accumulationNE turnoverNE neuronsLocus coeruleusNaloxone-insensitive mechanismAdministration of naloxoneMorphine-dependent animalsNE systemDose-dependent degreeNon-human primatesNE metabolismMorphine withdrawalOpiate withdrawalClonidine suppressionImpulse flowNoradrenergic hyperactivityClinical studiesCSF measuresControl monkeysClonidineElectrophysiological studiesMHPGBiochemical measuresPilot dataPlasma and cerebrospinal fluid 3-methoxy-4-hydroxyphenylethylene glycol (MHPG) as indices of brain norepinephrine metabolism in primates
Elsworth J, Redmond D, Roth R. Plasma and cerebrospinal fluid 3-methoxy-4-hydroxyphenylethylene glycol (MHPG) as indices of brain norepinephrine metabolism in primates. Brain Research 1982, 235: 115-124. PMID: 7188317, DOI: 10.1016/0006-8993(82)90200-1.Peer-Reviewed Original ResearchConceptsConcentration of MHPGBrain areasNorepinephrine metabolismMHPG concentrationsCisternal CSFBrain norepinephrine metabolismFree MHPG concentrationsCentral noradrenergic activityNoradrenergic activityOccipital cortexFree MHPGMHPGBrain regionsCSFSignificant correlationUseful indexVervet monkeysMetabolismPlasmaCortex