2025
Effects of Long-Term Cocaine Self-Administration on Kappa Opioid Receptors in Socially Housed Cynomolgus Monkeys as Assessed with PET Imaging and Neuronally Derived Exosomes
Johnson B, Allen M, Nader S, Sai K, Kumar A, Su Y, Singh S, Li S, Huang Y, Deep G, Nader M. Effects of Long-Term Cocaine Self-Administration on Kappa Opioid Receptors in Socially Housed Cynomolgus Monkeys as Assessed with PET Imaging and Neuronally Derived Exosomes. Biological Psychiatry 2025 PMID: 40054763, DOI: 10.1016/j.biopsych.2025.02.900.Peer-Reviewed Original ResearchLong-term cocaine self-administrationKappa-opioid receptorsCocaine self-administrationSelf-administrationKappa opioid receptor availabilityPeripheral measuresSocially housed monkeysOpioid receptorsCocaine intakeCocaine SAIntravenous cocaineCocaine misuseBrain regionsCocainePET imagingCynomolgus monkeysSocial rankPET studiesPharmacological interventionsMonkeysPET scansBrainBlood samplesDominant femalesSocial
2024
Astrocyte Ca2+ in the dorsal striatum suppresses neuronal activity to oppose cue-induced reinstatement of cocaine seeking
Tavakoli N, Malone S, Anderson T, Neeley R, Asadipooya A, Bardo M, Ortinski P. Astrocyte Ca2+ in the dorsal striatum suppresses neuronal activity to oppose cue-induced reinstatement of cocaine seeking. Frontiers In Cellular Neuroscience 2024, 18: 1347491. PMID: 39280793, PMCID: PMC11393831, DOI: 10.3389/fncel.2024.1347491.Peer-Reviewed Original ResearchCue-induced reinstatementCue-induced reinstatement of cocaine seekingCocaine self-administration experienceReinstatement of cocaine seekingCocaine self-administrationSelf-administer cocaineSelf-administration experimentsCocaine seekingDorsal striatumSelf-administrationExtinction of cocaine-seeking behaviorCocaine self-administration groupResponse to acute cocaineCocaine-seeking behaviorDorsal striatum neuronsDrug-seeking behaviorNeuronal activitySelf-administration groupLong-term neuronal plasticityBrain slicesAcute cocaineReward processingCocaine groupNeuronal signalingAcute administrationPET Imaging of Kappa Opioid Receptors in Socially Housed Female and Male Monkeys: Effects of Chronic Cocaine Self-Administration
Johnson B, Nader S, Sai K, Li S, Huang Y, Nader M. PET Imaging of Kappa Opioid Receptors in Socially Housed Female and Male Monkeys: Effects of Chronic Cocaine Self-Administration. Drug And Alcohol Dependence 2024, 260: 109961. DOI: 10.1016/j.drugalcdep.2023.109961.Peer-Reviewed Original ResearchCocaine use disorderKappa-opioid receptorsCocaine self-administrationCocaine-induced changesCocaine SASelf-administrationBinding potentialPositron emission tomographySocial rank differencesChronic cocaine self-administrationSocial rankDrug-naive monkeysKappa-opioid receptor antagonistKappa-opioid receptor agonistFDA-approved pharmacotherapiesOpioid receptorsRegulation of stressPositron emission tomography imagingCocaine intakeDynorphin/KOR systemKOR systemFood pelletsUse disorderExperiment 1Brain regionsCocaine self-administration behavior is associated with subcortical and cortical morphometry measures in individuals with cocaine use disorder
Kohler R, Zhornitsky S, Potenza M, Yip S, Worhunsky P, Angarita G. Cocaine self-administration behavior is associated with subcortical and cortical morphometry measures in individuals with cocaine use disorder. The American Journal Of Drug And Alcohol Abuse 2024, 50: 345-356. PMID: 38551365, PMCID: PMC11305926, DOI: 10.1080/00952990.2024.2318585.Peer-Reviewed Original ResearchGray-matter volumeSelf-administer cocaineSelf-administration behaviorCocaine use disorderSelf-administrationGray-matterFrontal cortexUse disorderCocaine self-administration behaviorSelf-administered cocaine infusionsCocaine self-administrationSelf-administration paradigmInfusions self-administeredSelf-report assessmentsCortical brain regionsStructural MRI dataFR1 scheduleInsular thicknessCocaine infusionsPredisposing vulnerabilitiesCocaine consumptionCocaine useBrain regionsBilateral regionsLimbic system
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