1992
Maintenance of acute morphine tolerance in mice by selective blockage of κ opioid receptors with norbinaltorphimine
Sofuoglu M, Portoghese P, Takemori A. Maintenance of acute morphine tolerance in mice by selective blockage of κ opioid receptors with norbinaltorphimine. European Journal Of Pharmacology 1992, 210: 159-162. PMID: 1318206, DOI: 10.1016/0014-2999(92)90666-r.Peer-Reviewed Original ResearchConceptsMorphine injectionSelective kappa opioid antagonistED50 valuesKappa-opioid antagonistAcute morphine toleranceTail-flick assayDevelopment of toleranceKappa-opioid sitesAntinociceptive ED50 valueNon-pretreated controlsSupraspinal sitesOpioid toleranceMorphine administrationControl miceMorphine sulfateMorphine toleranceOpioid agonistsOpioid antagonistSpinal sitesSingle doseOpioid receptorsOpioid sitesMorphineMiceSelective blockage
1991
Differential antagonism of delta opioid agonists by naltrindole and its benzofuran analog (NTB) in mice: evidence for delta opioid receptor subtypes.
Sofuoglu M, Portoghese P, Takemori A. Differential antagonism of delta opioid agonists by naltrindole and its benzofuran analog (NTB) in mice: evidence for delta opioid receptor subtypes. Journal Of Pharmacology And Experimental Therapeutics 1991, 257: 676-80. PMID: 1851833.Peer-Reviewed Original ResearchConceptsAntinociceptive ED50Antinociceptive actionMorphine sulfateAntinociceptive assaysDelta-opioid receptor agonistDelta opioid receptor subtypesDelta-opioid subtypesOpioid receptor agonistsOpioid receptor subtypesSingle large doseDelta-opioid agonistsPretreatment of animalsOpioid subtypesOpioid agonistsSpinal sitesDifferential antagonismReceptor agonistReceptor subtypesAntinociceptive activityD-Ala2Large doseDSLETDPDPENaltrindoleAntagonist activity
1990
Maintenance of morphine dependence by naloxone in acutely dependent mice.
Sofuoglu M, Sato J, Takemori A. Maintenance of morphine dependence by naloxone in acutely dependent mice. Journal Of Pharmacology And Experimental Therapeutics 1990, 254: 841-6. PMID: 2395116.Peer-Reviewed Original ResearchConceptsMorphine sulfateNaloxone hydrochloridePriming doseED50 valuesSingle doseControl groupMorphine-pretreated miceOpioid antagonist naloxoneSigns of withdrawalDevelopment of dependenceMS injectionDependent miceAntagonist naloxoneMorphine dependenceMiceDoseFormer groupMS 24NaloxoneHrPretreatmentWithdrawalInjectionGroupDays