2013
The Impact of NMDA Receptor Blockade on Human Working Memory-Related Prefrontal Function and Connectivity
Driesen NR, McCarthy G, Bhagwagar Z, Bloch MH, Calhoun VD, D'Souza DC, Gueorguieva R, He G, Leung HC, Ramani R, Anticevic A, Suckow RF, Morgan PT, Krystal JH. The Impact of NMDA Receptor Blockade on Human Working Memory-Related Prefrontal Function and Connectivity. Neuropsychopharmacology 2013, 38: 2613-2622. PMID: 23856634, PMCID: PMC3828532, DOI: 10.1038/npp.2013.170.Peer-Reviewed Original ResearchConceptsNMDA-RsRelationship of resting brain hyperconnectivity and schizophrenia-like symptoms produced by the NMDA receptor antagonist ketamine in humans
Driesen NR, McCarthy G, Bhagwagar Z, Bloch M, Calhoun V, D'Souza DC, Gueorguieva R, He G, Ramachandran R, Suckow RF, Anticevic A, Morgan PT, Krystal JH. Relationship of resting brain hyperconnectivity and schizophrenia-like symptoms produced by the NMDA receptor antagonist ketamine in humans. Molecular Psychiatry 2013, 18: 1199-1204. PMID: 23337947, PMCID: PMC3646075, DOI: 10.1038/mp.2012.194.Peer-Reviewed Original ResearchConceptsFunctional connectivityNegative symptomsGamma-aminobutyric acid (GABA) neuronsNMDA receptor antagonist ketamineAspartate glutamate receptor antagonistContinuous ketamine infusionGlutamate receptor antagonistsNMDA-R antagonistsCortical functional connectivityNMDA-R antagonist ketamineSchizophrenia-like symptomsHealthy human subjectsNegative Syndrome ScaleBrain functional connectivityPrimary samplesRegion-specific mannerFunctional magnetic resonanceKetamine infusionReceptor antagonistPathological increaseSyndrome ScaleSymptomsPreclinical researchKetamineBrain oscillations
2012
A single-day paradigm of self-regulated human cocaine administration
Matuskey D, Pittman B, Chen JI, Wanyiri J, Nadim H, Jatlow P, Gueorguieva R, Potenza MN, Morgan PT, Bhagwagar Z, Malison RT. A single-day paradigm of self-regulated human cocaine administration. Pharmacology Biochemistry And Behavior 2012, 103: 95-101. PMID: 22922558, PMCID: PMC3652339, DOI: 10.1016/j.pbb.2012.08.009.Peer-Reviewed Original Research
2009
Regulation of cocaine self-administration in humans: Lack of evidence for loading and maintenance phases
Angarita GA, Pittman B, Gueorguieva R, Kalayasiri R, Lynch WJ, Sughondhabirom A, Morgan PT, Malison RT. Regulation of cocaine self-administration in humans: Lack of evidence for loading and maintenance phases. Pharmacology Biochemistry And Behavior 2009, 95: 51-55. PMID: 20005893, PMCID: PMC2824073, DOI: 10.1016/j.pbb.2009.12.005.Peer-Reviewed Original Research
2006
A paradigm to investigate the regulation of cocaine self-administration in human cocaine users: a randomized trial
Lynch WJ, Sughondhabirom A, Pittman B, Gueorguieva R, Kalayasiri R, Joshua D, Morgan P, Coric V, Malison RT. A paradigm to investigate the regulation of cocaine self-administration in human cocaine users: a randomized trial. Psychopharmacology 2006, 185: 306-314. PMID: 16521032, DOI: 10.1007/s00213-006-0323-5.Peer-Reviewed Original ResearchConceptsTest-retest reliabilityCocaine administrationSelf-administered cocaine infusionsCocaine intakeTest-retest componentRegulation of cocaineTiming of infusionAbuse/dependenceDose-dependent fashionFixed ratio 1Non-treatment seeking volunteersDose-dependent wayCocaine abuse/dependenceCurrent studyHuman laboratory modelDrug-induced euphoriaCocaine-taking behaviorHuman cocaine usersCardiovascular responsesHuman laboratory paradigmCocaine infusionsConsecutive daysSubjective effectsPilot studyCocaine usersSelf-reported paranoia during laboratory “binge” cocaine self-administration in humans
Kalayasiri R, Sughondhabirom A, Gueorguieva R, Coric V, Lynch WJ, Morgan PT, Cubells JF, Malison RT. Self-reported paranoia during laboratory “binge” cocaine self-administration in humans. Pharmacology Biochemistry And Behavior 2006, 83: 249-256. PMID: 16549106, DOI: 10.1016/j.pbb.2006.02.005.Peer-Reviewed Original ResearchConceptsCocaine-induced paranoiaIntravenous cocaine self-administration sessionsPlacebo-controlled designCocaine self-administration sessionsCocaine-dependent volunteersSelf-administration sessionsTest-retest sessionsCocaine doseHigh dosesCocaine useSignificant main effectDoseDosesSelf-reported paranoiaSubjectsVulnerable subjects
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