2022
Acute effects of ketamine and esketamine on cognition in healthy subjects: A meta-analysis
Zhornitsky S, Tourjman V, Pelletier J, Assaf R, Li CR, Potvin S. Acute effects of ketamine and esketamine on cognition in healthy subjects: A meta-analysis. Progress In Neuro-Psychopharmacology And Biological Psychiatry 2022, 118: 110575. PMID: 35568275, DOI: 10.1016/j.pnpbp.2022.110575.Peer-Reviewed Original ResearchConceptsVerbal learningCognitive domainsResponse inhibitionAcute ketamine administrationVerbal learning/memorySpeed of processingLearning/memorySocial cognitionVerbal memoryExecutive functionVisual learningVisuospatial abilitiesMemory figuresCognitionMemoryCognitive impairmentAcute ketamineKetamine administrationEffect sizeLearningImpairmentModerate impairmentDeficitsNegative effectsHealthy individualsClinical and behavior characteristics of individuals who used ketamine
Lee TS, Liu YH, Huang YJ, Tang WK, Wang Y, Hu S, Lin CP, Li CR, Hung CC. Clinical and behavior characteristics of individuals who used ketamine. Scientific Reports 2022, 12: 801. PMID: 35039593, PMCID: PMC8764021, DOI: 10.1038/s41598-022-04832-9.Peer-Reviewed Original ResearchConceptsMemory testLower urinary tract symptomsN-back memory testShort-term recallShort-term memoryDrug-using participantsCigarette smokersImpulsivity measuresTerm recallBehavioral dispositionsPolydrug usersKetamine usersGroup of individualsSex-related behaviorsUrinary tract symptomsPolydrug useDrug-related problemsCross-sectional interviewMemoryRisk behaviorsKetamine useTract symptomsClinical characteristicsParticipantsHIV serostatus
2020
Effects of early ketamine exposure on cerebral gray matter volume and functional connectivity
Hung CC, Liu YH, Huang CC, Chou CY, Chen CM, Duann JR, Li CR, Lee TS, Lin CP. Effects of early ketamine exposure on cerebral gray matter volume and functional connectivity. Scientific Reports 2020, 10: 15488. PMID: 32968108, PMCID: PMC7512006, DOI: 10.1038/s41598-020-72320-z.Peer-Reviewed Original ResearchConceptsGray matter volumeCerebral gray matter volumeKetamine exposureFunctional connectivityMatter volumeKetamine usersBrain structuresLower gray matter volumeFunctional brain changesTreatment of depressionAdolescent-onset groupCerebral functional organizationHigher functional connectivitySuperior frontal gyrusInferior parietal lobuleMedial orbitofrontal cortexSeed-based correlation analysisKetamine groupBrain changesKetamine abuseLarge cohortRight insulaLeft precuneusKetamine misuseRight precuneus
2019
Striatal functional connectivity in chronic ketamine users: a pilot study
Hung CC, Zhang S, Chen CM, Duann JR, Lin CP, Lee TS, Li CR. Striatal functional connectivity in chronic ketamine users: a pilot study. The American Journal Of Drug And Alcohol Abuse 2019, 46: 31-43. PMID: 31264888, PMCID: PMC8627683, DOI: 10.1080/00952990.2019.1624764.Peer-Reviewed Original ResearchConceptsDuration of useChronic ketamine usersKetamine usersKetamine useKetamine misuseOrbitofrontal cortexFunctional connectivityStriatal functional connectivityState functional connectivityLeft orbitofrontal cortexBIS-11 scoresDorsal anterior cingulate cortexVoxel-wise connectivityAnterior cingulate cortexMagnetic resonance imagingOFC connectivityHealthy controlsBilateral cerebellumStriatal connectivityCingulate cortexResonance imagingControl dysfunctionVentral striatumZ-scorePilot study
2017
Depression in chronic ketamine users: Sex differences and neural bases
Li CR, Zhang S, Hung CC, Chen CM, Duann JR, Lin CP, Lee TS. Depression in chronic ketamine users: Sex differences and neural bases. Psychiatry Research Neuroimaging 2017, 269: 1-8. PMID: 28892733, PMCID: PMC5634929, DOI: 10.1016/j.pscychresns.2017.09.001.Peer-Reviewed Original ResearchConceptsHealthy controlsSgACC connectivityChronic ketamine usersKetamine usersOrbitofrontal cortexEpidemiological Studies Depression ScaleSubgenual anterior cingulate cortexSex differencesPathogenesis of depressionCES-D scoresState functional connectivityBilateral superior temporal gyrusChronic ketamine useAnterior cingulate cortexSuperior temporal gyrusNeural basisDepression ScaleDorsomedial prefrontal cortexDepression scoresDepression severityKetamine useCingulate cortexTemporal gyrusFunctional connectivityPrefrontal cortex