2024
Evidence from comprehensive independent validation studies for smooth pursuit dysfunction as a sensorimotor biomarker for psychosis
Meyhoefer I, Sprenger A, Derad D, Grotegerd D, Leenings R, Leehr E, Breuer F, Surmann M, Rolfes K, Arolt V, Romer G, Lappe M, Rehder J, Koutsouleris N, Borgwardt S, Schultze-Lutter F, Meisenzahl E, Kircher T, Keedy S, Bishop J, Ivleva E, McDowell J, Reilly J, Hill S, Pearlson G, Tamminga C, Keshavan M, Gershon E, Clementz B, Sweeney J, Hahn T, Dannlowski U, Lencer R. Evidence from comprehensive independent validation studies for smooth pursuit dysfunction as a sensorimotor biomarker for psychosis. Scientific Reports 2024, 14: 13859. PMID: 38879556, PMCID: PMC11180169, DOI: 10.1038/s41598-024-64487-6.Peer-Reviewed Original ResearchConceptsSmooth pursuit eye movementsPsychosis syndromePursuit eye movementsNon-psychotic bipolar disorderNon-psychotic affective disorderEye movementsSmooth pursuit dysfunctionMultivariate pattern analysisHealthy controlsPsychiatric sampleNeurobiological markersPsychosis probandsPsychotic syndromesAffective disordersPsychosis researchBipolar disorderPsychosis statusPsychosisSensorimotor functionSensorimotor measuresIndividual levelSensorimotor dysfunctionSensorimotorDisordersPattern analysis
2023
Supervised machine learning classification of psychosis biotypes based on brain structure: findings from the Bipolar-Schizophrenia network for intermediate phenotypes (B-SNIP)
Koen J, Lewis L, Rugg M, Clementz B, Keshavan M, Pearlson G, Sweeney J, Tamminga C, Ivleva E. Supervised machine learning classification of psychosis biotypes based on brain structure: findings from the Bipolar-Schizophrenia network for intermediate phenotypes (B-SNIP). Scientific Reports 2023, 13: 12980. PMID: 37563219, PMCID: PMC10415369, DOI: 10.1038/s41598-023-38101-0.Peer-Reviewed Original ResearchMeSH KeywordsBiomarkersBipolar DisorderBrainHumansMagnetic Resonance ImagingPhenotypePsychotic DisordersSchizophreniaConceptsPsychosis biotypesPsychosis casesBrain-based biomarkersLogistic regression modelsT1-weighted imagesBipolar-Schizophrenia NetworkHealthy controlsDisease neurobiologyPsychotic disordersClinical diagnosisStructural MRIBrain structuresGrey matter density mapsDSM diagnosesEvidence of specificityAbove-chance classification accuracyCharacterization of childhood trauma, hippocampal mediation and Cannabis use in a large dataset of psychosis and non-psychosis individuals
Del Re E, Yassin W, Zeng V, Keedy S, Alliey-Rodriguez N, Ivleva E, Hill S, Rychagov N, McDowell J, Bishop J, Mesholam-Gately R, Merola G, Lizano P, Gershon E, Pearlson G, Sweeney J, Clementz B, Tamminga C, Keshavan M. Characterization of childhood trauma, hippocampal mediation and Cannabis use in a large dataset of psychosis and non-psychosis individuals. Schizophrenia Research 2023, 255: 102-109. PMID: 36989667, DOI: 10.1016/j.schres.2023.03.029.Peer-Reviewed Original ResearchMeSH KeywordsAdverse Childhood ExperiencesBipolar DisorderCannabisChildCross-Sectional StudiesHippocampusHumansPsychotic DisordersConceptsChildhood Trauma QuestionnaireChildhood traumaPsychosis onsetBipolar disorder type 1Rich brain regionsAbuse/dependenceHigh childhood traumaSevere childhood traumaPolygenic risk scoresRisk scoreClinical interviewersSchizoaffective disorderMulticenter sampleSurvival analysisCA exposureYounger ageBrain regionsType 1Psychosis riskLower ageCeiling effectsHippocampusTrauma QuestionnaireSZ-polygenic risk scoreGenetic riskPeripheral inflammation is associated with impairments of inhibitory behavioral control and visual sensorimotor function in psychotic disorders
Zhang L, Lizano P, Xu Y, Rubin L, Lee A, Lencer R, Reilly J, Keefe R, Keedy S, Pearlson G, Clementz B, Keshavan M, Gershon E, Tamminga C, Sweeney J, Hill S, Bishop J. Peripheral inflammation is associated with impairments of inhibitory behavioral control and visual sensorimotor function in psychotic disorders. Schizophrenia Research 2023, 255: 69-78. PMID: 36965362, PMCID: PMC10175233, DOI: 10.1016/j.schres.2023.03.030.Peer-Reviewed Original ResearchMeSH KeywordsBehavior ControlBipolar DisorderHumansInflammationNeuropsychological TestsPsychotic DisordersSchizophreniaConceptsCognitive domainsInhibitory controlGeneral cognitive abilitySpecific cognitive domainsInhibitory behavioral controlC-reactive proteinPsychotic disordersPsychosis spectrum disordersCognitive abilitiesPeripheral inflammationInflammation factorsSpectrum disorderSensorimotor functionSensorimotor tasksNeurobehavioral domainsGreater deficitsSubgroup of individualsBehavioral controlPsychosis subgroupsCognitive impairmentPreliminary evidenceHigher inflammation scoresNeurobehavioral batteryBrain anatomyBehavioral monitoring
2021
An opportunity for primary prevention research in psychotic disorders
Gershon ES, Lee SH, Zhou X, Sweeney JA, Tamminga C, Pearlson GA, Clementz BA, Keshavan MS, Alliey-Rodriguez N, Hudgens-Haney M, Keedy SK, Glahn DC, Asif H, Lencer R, Hill SK. An opportunity for primary prevention research in psychotic disorders. Schizophrenia Research 2021, 243: 433-439. PMID: 34315649, PMCID: PMC8784565, DOI: 10.1016/j.schres.2021.07.001.Peer-Reviewed Original Research
2016
Subcortical volumetric abnormalities in bipolar disorder
Hibar DP, Westlye LT, van Erp TG, Rasmussen J, Leonardo CD, Faskowitz J, Haukvik UK, Hartberg CB, Doan NT, Agartz I, Dale AM, Gruber O, Krämer B, Trost S, Liberg B, Abé C, Ekman CJ, Ingvar M, Landén M, Fears SC, Freimer NB, Bearden CE, Sprooten E, Glahn D, Pearlson G, Emsell L, Kenney J, Scanlon C, McDonald C, Cannon D, Almeida J, Versace A, Caseras X, Lawrence N, Phillips M, Dima D, Delvecchio G, Frangou S, Satterthwaite T, Wolf D, Houenou J, Henry C, Malt U, Bøen E, Elvsåshagen T, Young A, Lloyd A, Goodwin G, Mackay C, Bourne C, Bilderbeck A, Abramovic L, Boks M, van Haren N, Ophoff R, Kahn R, Bauer M, Pfennig A, Alda M, Hajek T, Mwangi B, Soares J, Nickson T, Dimitrova R, Sussmann J, Hagenaars S, Whalley H, McIntosh A, Thompson P, Andreassen O. Subcortical volumetric abnormalities in bipolar disorder. Molecular Psychiatry 2016, 21: 1710-1716. PMID: 26857596, PMCID: PMC5116479, DOI: 10.1038/mp.2015.227.Peer-Reviewed Original ResearchMeSH KeywordsAdultBipolar DisorderBrainCase-Control StudiesFemaleHumansMagnetic Resonance ImagingMaleMiddle AgedOrgan SizeRetrospective StudiesConceptsLateral ventricleBipolar disorderBDII patientsBD patientsIntracranial volumeLarger thalamic volumesSubcortical volumetric abnormalitiesLarger lateral ventriclesSignificant differencesSubcortical brain measuresCase-control differencesDevelopment of biomarkersMean hippocampusVolumetric abnormalitiesIllness onsetThalamic volumeBDI patientsGlobus pallidusSmaller hippocampiClinical subtypesDisease progressionHealthy controlsBrain changesNucleus accumbensPatients
2014
Multivariate analysis reveals genetic associations of the resting default mode network in psychotic bipolar disorder and schizophrenia
Meda SA, Ruaño G, Windemuth A, O’Neil K, Berwise C, Dunn SM, Boccaccio LE, Narayanan B, Kocherla M, Sprooten E, Keshavan MS, Tamminga CA, Sweeney JA, Clementz BA, Calhoun VD, Pearlson GD. Multivariate analysis reveals genetic associations of the resting default mode network in psychotic bipolar disorder and schizophrenia. Proceedings Of The National Academy Of Sciences Of The United States Of America 2014, 111: e2066-e2075. PMID: 24778245, PMCID: PMC4024891, DOI: 10.1073/pnas.1313093111.Peer-Reviewed Original ResearchConceptsDefault mode networkPsychotic bipolar disorderUnaffected first-degree relativesFirst-degree relativesSZ probandsResting-state functional MRI scansBipolar disorderMode networkFunctional MRI scansLong-term potentiationBrain's default mode networkGlobal enrichment analysisSubset of controlsPatient groupHealthy controlsDMN modulationDrug treatmentImmune responsePsychiatric disordersStudy subjectsMRI scansDMN connectivityMultivariate analysisFunctional connectivitySchizophrenia
2013
Resting State Electroencephalogram Oscillatory Abnormalities in Schizophrenia and Psychotic Bipolar Patients and Their Relatives from the Bipolar and Schizophrenia Network on Intermediate Phenotypes Study
Narayanan B, O’Neil K, Berwise C, Stevens MC, Calhoun VD, Clementz BA, Tamminga CA, Sweeney JA, Keshavan MS, Pearlson GD. Resting State Electroencephalogram Oscillatory Abnormalities in Schizophrenia and Psychotic Bipolar Patients and Their Relatives from the Bipolar and Schizophrenia Network on Intermediate Phenotypes Study. Biological Psychiatry 2013, 76: 456-465. PMID: 24439302, PMCID: PMC5045030, DOI: 10.1016/j.biopsych.2013.12.008.Peer-Reviewed Original ResearchConceptsFirst-degree relativesSlow beta activityFast alpha activitySZ probandsAlpha activityHealthy control subjectsBeta activityRelative risk estimatesFrontal delta activityEEG spectral activityModerate relative riskPsychotic bipolar patientsLow-frequency activityPsychotic bipolar probandsGroup independent component analysisControl subjectsRelative riskPost-hoc pair-wise comparisonsBipolar patientsGenetic predispositionIntermediate Phenotypes (B-SNIP) studyOscillatory abnormalitiesAnalysis of covarianceUnique endophenotypesBipolar disorder
2000
MRI findings differentiate between late‐onset schizophrenia and late‐life mood disorder
Rabins P, Aylward E, Holroyd S, Pearlson G. MRI findings differentiate between late‐onset schizophrenia and late‐life mood disorder. International Journal Of Geriatric Psychiatry 2000, 15: 954-960. PMID: 11044878, DOI: 10.1002/1099-1166(200010)15:10<954::aid-gps224>3.0.co;2-o.Peer-Reviewed Original ResearchConceptsLate-onset schizophreniaLate-life bipolar disorderBilateral cortical atrophyLarger third ventriclesRight temporal hornLate-life mood disordersLate-life depressionDegree of atrophyNormal control groupGender-matched controlsFunctional imaging studiesSulcal enlargementCortical atrophyMRI findingsTemporal hornFunctional abnormalitiesSylvian fissureMood disordersThird ventricleOutpatient servicesMRI scansPatientsAffective disordersControl groupBipolar disorder
1999
Structural and functional brain changes in bipolar disorder: a selective review
Pearlson G. Structural and functional brain changes in bipolar disorder: a selective review. Schizophrenia Research 1999, 39: 133-140. PMID: 10507524, DOI: 10.1016/s0920-9964(99)00112-7.Peer-Reviewed Original ResearchMeSH KeywordsAffective SymptomsBipolar DisorderBrainBrain InjuriesHumansNeural PathwaysSchizophrenia
1997
Quantification of Neuroreceptors in the Living Human Brain
Wong *, Pearlson ‡, Tune ‡, Young *, Meltzer *, Dannals *, Ravert *, Reith *, Kuhar †, Gjedde ¶. Quantification of Neuroreceptors in the Living Human Brain. Cerebrovascular And Brain Metabolism Reviews 1997, 17: 331-342. PMID: 9119906, DOI: 10.1097/00004647-199703000-00010.Peer-Reviewed Original ResearchConceptsD2-like dopamine receptorsDrug-naive schizophrenic patientsDopamine receptorsSchizophrenic patientsIllness patientsPatient groupControl subjectsReceptor densityD2 dopamine receptor densityDrug-naive schizophreniaDopamine receptor densityLiving Human BrainBipolar affective illnessD2 dopamine receptorsQuantification of NeuroreceptorsPositron emission tomographyEffect of ageBrain uptakeAffective illnessBipolar illnessNonpsychotic patientsCaudate nucleusNormal controlsNormal volunteersPatientsMedial and superior temporal gyral volumes and cerebral asymmetry in schizophrenia versus bipolar disorder
Pearlson G, Barta P, Powers R, Menon R, Richards S, Aylward E, Federman E, Chase G, Petty R, Tien A. Medial and superior temporal gyral volumes and cerebral asymmetry in schizophrenia versus bipolar disorder. Biological Psychiatry 1997, 41: 1-14. PMID: 8988790, DOI: 10.1016/s0006-3223(96)00373-3.Peer-Reviewed Original ResearchConceptsSuperior temporal gyrusAnterior superior temporal gyrusBipolar disorderSchizophrenic patientsSuperior temporal gyral volumeMagnetic resonance imaging studyTemporal lobe changesMedial temporal structuresRight anterior superior temporal gyrusResonance imaging studyGlobal brain measuresPosterior superior temporal gyrusGyral volumeHealthy controlsMRI measuresTemporal lobeBipolar patientsBipolar subjectsNormal controlsImaging studiesTemporal gyrusPatientsSchizophreniaBilateral volumesBrain measures
1996
Eye Movements and Psychopathology in Schizophrenia and Bipolar Disorder
TIEN A, ROSS D, PEARLSON G, STRAUSS M. Eye Movements and Psychopathology in Schizophrenia and Bipolar Disorder. The Journal Of Nervous And Mental Disease 1996, 184: 331-338. PMID: 8642381, DOI: 10.1097/00005053-199606000-00001.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAge FactorsAgedAttentionBipolar DisorderEye MovementsFemaleHumansIntelligence TestsMaleMiddle AgedMultivariate AnalysisNeuropsychological TestsPsychiatric Status Rating ScalesPursuit, SmoothReaction TimeRegression AnalysisSaccadesSchizophreniaSchizophrenic PsychologySex FactorsVisual Perception
1995
In Vivo D2 Dopamine Receptor Density in Psychotic and Nonpsychotic Patients With Bipolar Disorder
Pearlson G, Wong D, Tune L, Ross C, Chase G, Links J, Dannals R, Wilson A, Ravert H, Wagner H, DePaulo J. In Vivo D2 Dopamine Receptor Density in Psychotic and Nonpsychotic Patients With Bipolar Disorder. JAMA Psychiatry 1995, 52: 471-477. PMID: 7771917, DOI: 10.1001/archpsyc.1995.03950180057008.Peer-Reviewed Original ResearchConceptsSchizophrenic patientsBipolar disorderBmax valuesNonpsychotic patientsNormal controlsPsychotic symptomsPsychotic patientsAffective disordersPositron emission tomographic scansD2 dopamine receptor densityNeuroleptic-naive schizophrenic patientsPositron emission tomographic studiesDopamine receptor densityReceptor density valuesDSM-III criteriaPresent State ExaminationPresence of psychosisEmission tomographic studiesHigher Bmax valuesPsychotic bipolar disorderNeuroleptic medicationReceptor BmaxMood abnormalitiesReceptor valuesTomographic scan
1987
Mania After Brain Injury: A Controlled Study of Causative Factors
Starkstein S, Pearlson G, Boston J, Robinson R. Mania After Brain Injury: A Controlled Study of Causative Factors. JAMA Neurology 1987, 44: 1069-1073. PMID: 3632381, DOI: 10.1001/archneur.1987.00520220065019.Peer-Reviewed Original ResearchConceptsBrain injuryVentricle/brain ratiosPossible family historyFocal brain injurySecondary maniaRight hemisphere lesionsSubcortical atrophyBrain ratioDepressive episodeLimbic areasManic patientsFamily historyManic syndromeFocal lesionsAffective disordersPatientsInjuryLesionsCausative factorsRare occurrenceHemisphere lesionsGenetic loadingRight hemisphereManiaRight hemisphere involvement
1985
Symptomatic, Familial, Perinatal, and Social Correlates of Computerized Axial Tomography (CAT) Changes in Schizophrenics and Bipolars
PEARLSON G, GARBACZ D, MOBERG P, AHN H, DEPAULO J. Symptomatic, Familial, Perinatal, and Social Correlates of Computerized Axial Tomography (CAT) Changes in Schizophrenics and Bipolars. The Journal Of Nervous And Mental Disease 1985, 173: 42-50. PMID: 3965611, DOI: 10.1097/00005053-198501000-00007.Peer-Reviewed Original ResearchConceptsVentricular enlargementFamily historyNegative symptomsComputerized axial tomography scanLateral ventricular enlargementAxial tomography scanPast psychiatric historyEarly brain damageMarked ventricular enlargementSubgroup of schizophrenicsPoor premorbid adjustmentLateral ventricularTomography changesBrain ratioPatient groupBrain damageTomography scanPsychiatric illnessPsychiatric historyBipolar patientsNormal controlsEarly onsetPatientsPremorbid adjustmentSignificant proportionDopamine receptor binding of C-11-3-N-methylspiperone in the caudate in schizophrenia and bipolar disorder: a preliminary report.
Wong D, Wagner H, Pearlson G, Dannals R, Links J, Ravert H, Wilson A, Suneja S, Bjorvvinssen E, Kuhar M. Dopamine receptor binding of C-11-3-N-methylspiperone in the caudate in schizophrenia and bipolar disorder: a preliminary report. Psychopharmacology Bulletin 1985, 21: 595-8. PMID: 4034877.Peer-Reviewed Original ResearchMeSH KeywordsAdultBipolar DisorderButyrophenonesCaudate NucleusHumansReceptors, DopamineSchizophreniaSpiperoneConceptsDopamine receptor binding
1984
Lateral ventricular enlargement associated with persistent unemployment and negative symptoms in both schizophrenia and bipolar disorder
Pearlson G, Garbacz D, Breakey W, Ahn H, DePaulo J. Lateral ventricular enlargement associated with persistent unemployment and negative symptoms in both schizophrenia and bipolar disorder. Psychiatry Research 1984, 12: 1-9. PMID: 6589656, DOI: 10.1016/0165-1781(84)90133-1.Peer-Reviewed Original Research
1981
COMPUTERISED TOMOGRAPHIC SCAN CHANGES IN MANIC-DEPRESSIVE ILLNESS
Pearlson G, Veroff A. COMPUTERISED TOMOGRAPHIC SCAN CHANGES IN MANIC-DEPRESSIVE ILLNESS. The Lancet 1981, 318: 470. PMID: 6115222, DOI: 10.1016/s0140-6736(81)90798-4.Peer-Reviewed Original Research