2020
A Non–D2-Receptor-Binding Drug for the Treatment of Schizophrenia
Koblan KS, Kent J, Hopkins SC, Krystal JH, Cheng H, Goldman R, Loebel A. A Non–D2-Receptor-Binding Drug for the Treatment of Schizophrenia. New England Journal Of Medicine 2020, 382: 1497-1506. PMID: 32294346, DOI: 10.1056/nejmoa1911772.Peer-Reviewed Original ResearchMeSH KeywordsAcute DiseaseAdministration, OralAdultAntipsychotic AgentsDouble-Blind MethodDrug Administration ScheduleFemaleHumansLeast-Squares AnalysisMaleReceptors, Dopamine D2Receptors, G-Protein-CoupledSchizophreniaSchizophrenic PsychologySerotonin 5-HT1 Receptor AgonistsSeverity of Illness IndexTreatment OutcomeConceptsTrace amine-associated receptor 1Week 4Negative Symptom ScaleAcute exacerbationPlacebo groupBrief Negative Symptom ScaleTotal scoreSymptom ScaleClinical Global Impression-Severity ScaleEnd pointPrimary end pointSecondary end pointsSudden cardiac deathPANSS total scoreTreatment of schizophreniaDopamine D2 receptorsTreatment of psychosisType 1A receptorMean total scoreLevels of lipidsGastrointestinal symptomsAdverse eventsCardiac deathExtrapyramidal symptomsPrimary outcome
2011
Long-Acting Risperidone and Oral Antipsychotics in Unstable Schizophrenia
Rosenheck RA, Krystal JH, Lew R, Barnett PG, Fiore L, Valley D, Thwin SS, Vertrees JE, Liang MH. Long-Acting Risperidone and Oral Antipsychotics in Unstable Schizophrenia. New England Journal Of Medicine 2011, 364: 842-851. PMID: 21366475, DOI: 10.1056/nejmoa1005987.Peer-Reviewed Original ResearchConceptsInjectable risperidoneOral antipsychoticsQuality of lifeSchizoaffective disorderPsychiatrist's choiceSecond-generation antipsychotic agentsMore adverse eventsMore extrapyramidal symptomsPrimary end pointNeurologic side effectsExtrapyramidal adverse effectsRate of hospitalizationVeterans Affairs systemSocial Performance ScaleAdverse eventsExtrapyramidal symptomsOral treatmentAntipsychotic agentsUnstable diseasePsychiatric symptomsHigh riskHospitalizationSide effectsPatientsPsychiatric hospital
2010
Clinical significance of neurological soft signs in schizophrenia: Factor analysis of the Neurological Evaluation Scale
Sewell RA, Perry EB, Karper LP, Bell MD, Lysaker P, Goulet JL, Brenner L, Erdos J, d'Souza DC, Seibyl JP, Krystal JH. Clinical significance of neurological soft signs in schizophrenia: Factor analysis of the Neurological Evaluation Scale. Schizophrenia Research 2010, 124: 1-12. PMID: 20855185, DOI: 10.1016/j.schres.2010.08.036.Peer-Reviewed Original ResearchConceptsNeurological Evaluation ScaleAbnormal Involuntary Movement ScaleDigit Symbol Substitution TaskWisconsin Card Sorting TestNeurologic deficitsClinical significanceExtrapyramidal Symptom Rating ScaleMore extrapyramidal symptomsBarnes Akathisia ScaleDetailed clinical assessmentNeurological soft signsSymptom Rating ScaleNegative Syndrome ScaleHigher AIMS scoresEvaluation ScaleNeurological deficitsExtrapyramidal symptomsClinical correlatesDeficit syndrome schizophreniaClinical evaluationClinical assessmentAIMS scoresLower PANSSMovement ScaleSoft signs
2001
Quantitative Morphology of the Caudate and Putamen in Patients With Cocaine Dependence
Jacobsen LK, Giedd JN, Gottschalk C, Kosten TR, Krystal JH. Quantitative Morphology of the Caudate and Putamen in Patients With Cocaine Dependence. American Journal Of Psychiatry 2001, 158: 486-489. PMID: 11229995, DOI: 10.1176/appi.ajp.158.3.486.Peer-Reviewed Original ResearchConceptsCocaine dependenceDopaminergic functionStriatal dopaminergic depletionTypical neuroleptic treatmentTotal brain volumeChronic cocaine dependenceCocaine-dependent subjectsChronic cocaine useStriatal hypertrophyExtrapyramidal symptomsNeuroleptic treatmentDopaminergic depletionHealthy subjectsBrain volumePutamen volumeCocaine useStriatal structuresCaudatePatientsPutamenHypertrophyMagnetic resonanceDeficitsQuantitative morphologySubjects
1996
Continuous intravenous infusion of iodine-123-IBZM for SPECT determination of human brain dopamine receptor occupancy by antipsychotic agent RWJ-37796.
Seibyl JP, Zea-Ponce Y, Brenner L, Baldwin RM, Krystal JH, Offord SJ, Mochoviak S, Charney DS, Hoffer PB, Innis RB. Continuous intravenous infusion of iodine-123-IBZM for SPECT determination of human brain dopamine receptor occupancy by antipsychotic agent RWJ-37796. Journal Of Nuclear Medicine 1996, 37: 11-5. PMID: 8543979.Peer-Reviewed Original ResearchMeSH KeywordsAdultAntipsychotic AgentsBenzamidesBrainContrast MediaCorpus StriatumDopamine AntagonistsDose-Response Relationship, DrugFeasibility StudiesHumansInfusions, IntravenousIodine RadioisotopesMalePiperazinesPyrrolidinesReceptors, DopamineReceptors, Dopamine D2Time FactorsTomography, Emission-Computed, Single-PhotonConceptsHealthy male subjectsContinuous infusionBrain activity levelsReceptor occupancyStriatal activityAntipsychotic agentsDopamine receptorsMale subjectsSerial venous blood samplesSide effect ratingsBrain time-activity curvesContinuous intravenous infusionExtrapyramidal side effectsStriatal dopamine receptorsVenous blood samplesDopamine receptor occupancySerial SPECT imagesClinical responseExtrapyramidal symptomsIntravenous infusionSerum prolactinAntipsychotic drugsBlood samplesSide effectsTime-activity curves