2023
Randomized controlled trial of the glycine transporter 1 inhibitor PF-03463275 to enhance cognitive training and neuroplasticity in schizophrenia
Surti T, Ranganathan M, Johannesen J, Gueorguieva R, Deaso E, Kenney J, Krystal J, D'Souza D. Randomized controlled trial of the glycine transporter 1 inhibitor PF-03463275 to enhance cognitive training and neuroplasticity in schizophrenia. Schizophrenia Research 2023, 256: 36-43. PMID: 37141764, PMCID: PMC10257994, DOI: 10.1016/j.schres.2023.04.010.Peer-Reviewed Original ResearchConceptsGlycine transporter 1Cytochrome P450 2D6 extensive metabolizersGlyT1 inhibitorsWeeks of washoutWeeks of CTMedication adherenceReceptor hypofunctionImpaired neuroplasticityPharmacodynamic variabilityNMDAR functionExtensive metabolizersTreatment periodPsychotic symptomsStable outpatientsCognitive impairmentGlyT1 occupancyTransporter 1CTNeuroplasticityCognitive training strategiesSchizophreniaComputerized CTCognitive performanceAugmentation studiesGreater improvement
2021
Detecting change in psychiatric functioning in clinical trials for cocaine use disorder: sensitivity of the Addiction Severity Index and Brief Symptom Inventory
Kiluk BD, Roos CR, Aslan M, Gueorguieva R, Nich C, Babuscio TA, Carroll KM. Detecting change in psychiatric functioning in clinical trials for cocaine use disorder: sensitivity of the Addiction Severity Index and Brief Symptom Inventory. Drug And Alcohol Dependence 2021, 228: 109070. PMID: 34600247, PMCID: PMC8595796, DOI: 10.1016/j.drugalcdep.2021.109070.Peer-Reviewed Original ResearchConceptsAddiction Severity IndexGlobal Severity IndexPsychiatric composite scoreClinical trialsCocaine useCocaine use disorderPsychiatric functioningBrief Symptom InventorySeverity IndexUse disordersASI psychiatric composite scoreSymptom InventoryEffect sizeStart of treatmentComposite scoreClinical trial participantsWeek 12Functional outcomeTreatment periodTrial participantsPsychiatric problemsDrug usePotential functional benefitsMedium effect sizeSubstance users
2019
Influence of combined treatment with naltrexone and memantine on alcohol drinking behaviors: a phase II randomized crossover trial
Krishnan-Sarin S, O’Malley S, Franco N, Cavallo DA, Tetrault JM, Shi J, Gueorguieva R, Pittman B, Krystal JH. Influence of combined treatment with naltrexone and memantine on alcohol drinking behaviors: a phase II randomized crossover trial. Neuropsychopharmacology 2019, 45: 319-326. PMID: 31590179, PMCID: PMC6901445, DOI: 10.1038/s41386-019-0536-z.Peer-Reviewed Original ResearchConceptsAlcohol drinking behaviorFirst treatment periodTreatment periodNumber of drinksCrossover trialDrinking behaviorEfficacy of naltrexoneOpioid antagonist naltrexoneNMDA antagonist memantinePositive family historyDay treatment periodSelf-administration periodAlcohol-induced stimulationAd lib accessMemantine treatmentAntagonist naltrexoneOpioid systemFamily historyNTXPriming drinkMemantineNaltrexoneAlcohol cravingHeavy drinkersAlcohol dependence
2015
Reduction of alcohol drinking in young adults by naltrexone: a double-blind, placebo-controlled, randomized clinical trial of efficacy and safety.
O'Malley SS, Corbin WR, Leeman RF, DeMartini KS, Fucito LM, Ikomi J, Romano DM, Wu R, Toll BA, Sher KJ, Gueorguieva R, Kranzler HR. Reduction of alcohol drinking in young adults by naltrexone: a double-blind, placebo-controlled, randomized clinical trial of efficacy and safety. The Journal Of Clinical Psychiatry 2015, 76: e207-13. PMID: 25742208, PMCID: PMC4442987, DOI: 10.4088/jcp.13m08934.Peer-Reviewed Original ResearchConceptsHeavy drinking daysBlood alcohol concentrationPercent days abstinentDrinking daysNumber of drinksYoung adultsDays abstinentPercent heavy drinking daysOutpatient research centerSafety of naltrexonePlacebo-controlled studySerious adverse eventsRisk-benefit ratioPercentage of daysAdverse eventsSecondary outcomesPrimary outcomeFrequency of drinkingOpioid antagonistAdult heavy drinkersAlcohol drinkingClinical trialsEvaluable samplesYoung adult heavy drinkersTreatment period
2004
Addition of the α2-Antagonist Yohimbine to Fluoxetine: Effects on Rate of Antidepressant Response
Sanacora G, Berman RM, Cappiello A, Oren DA, Kugaya A, Liu N, Gueorguieva R, Fasula D, Charney DS. Addition of the α2-Antagonist Yohimbine to Fluoxetine: Effects on Rate of Antidepressant Response. Neuropsychopharmacology 2004, 29: 1166-1171. PMID: 15010697, DOI: 10.1038/sj.npp.1300418.Peer-Reviewed Original ResearchConceptsHamilton depression scale ratingsΑ2-antagonist yohimbineAntidepressant responseClinical Global Impression ratingsBlood pressure changesPercentage of respondersLog-rank testGlobal Impression ratingsMajor depressive disorderMore rapid onsetP subjectsDSM-IV diagnosisSSRI agentsTitrated doseYohimbine doseAntidepressant actionAntidepressant medicationCGI scaleNoradrenergic toneMonoaminergic neurotransmissionΑ2-adrenoceptorsDepressive disorderTreatment periodOutcome measuresSCID interview