1991
Yohimbine co-treatment during chronic morphine administration attenuates naloxone-precipitated withdrawal without diminishing tail-flick analgesia in rats
Taylor J, Lewis V, Elsworth J, Pivirotto P, Roth R, Redmond D. Yohimbine co-treatment during chronic morphine administration attenuates naloxone-precipitated withdrawal without diminishing tail-flick analgesia in rats. Psychopharmacology 1991, 103: 407-414. PMID: 2057541, DOI: 10.1007/bf02244297.Peer-Reviewed Original ResearchConceptsChronic morphine administrationTail-flick latencyMorphine treatmentMorphine administrationMorphine withdrawalNoradrenergic activityAlpha 2 antagonist yohimbineAlpha-2 adrenergic receptorsTail-flick analgesiaChronic drug treatmentNaloxone-precipitated withdrawalDose-dependent mannerAdrenergic hyperactivityOpioid administrationOpioid analgesiaFlick latencyNeuronal hyperactivityMorphine pelletsWithdrawal signsAbnormal postureNoradrenergic systemPenile erectionSaline controlsDrug treatmentAnalgesia
1982
Brain catecholamine metabolites and behavior in morphine withdrawal
Swann A, Elsworth J, Charney D, Jablons D, Roth R, Redmond D, Maas J. Brain catecholamine metabolites and behavior in morphine withdrawal. European Journal Of Pharmacology 1982, 86: 167-175. PMID: 6297931, DOI: 10.1016/0014-2999(82)90314-4.Peer-Reviewed Original ResearchConceptsCatecholamine metabolitesMorphine withdrawal behaviorsBeta-receptor bindingWithdrawal behaviorDebrisoquin sulfateAcute treatmentMorphine withdrawalNorepinephrine metaboliteMorphine pelletsWithdrawal signsPlasma levelsBrain 3Noradrenergic hyperactivityReceptor bindingMHPGBrainMetabolitesNaloxoneHVARatsHyperactivityClonidine 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 data