2023
Aging gene signature of memory CD8+ T cells is associated with neurocognitive functioning in Alzheimer’s disease
Young J, Park H, Kim M, Par-Young J, Bartlett H, Kim H, Unlu S, Osmani L, Shin M, Bucala R, van Dyck C, Allore H, Mecca A, You S, Kang I. Aging gene signature of memory CD8+ T cells is associated with neurocognitive functioning in Alzheimer’s disease. Immunity & Ageing 2023, 20: 71. PMID: 38042785, PMCID: PMC10693128, DOI: 10.1186/s12979-023-00396-y.Peer-Reviewed Original ResearchPeripheral bloodT cellsAlzheimer's diseaseEM CD8Memory CD8Gene signatureAge-related immune changesIL-7 receptor alphaEffector memory CD8Strong risk factorT cell expansionAD genesAge-associated expansionImmune changesRisk factorsCD8Dementia patientsIL-7RNeuropsychological testingReceptor alphaNeurocognitive functionRT-qPCR resultsDisease severityPatientsNormal personsCost consequence analysis of Apathy in Dementia Methylphenidate Trial 2 (ADMET 2).
Lanctôt K, Chen C, Mah E, Kiss A, Li A, Shade D, Scherer R, Vieira D, Coulibaly H, Rosenberg P, Lerner A, Padala P, Brawman-Mintzer O, van Dyck C, Porsteinsson A, Craft S, Levey A, Burke W, Mintzer J, Herrmann N. Cost consequence analysis of Apathy in Dementia Methylphenidate Trial 2 (ADMET 2). International Psychogeriatrics 2023, 35: 664-672. PMID: 37066690, PMCID: PMC10579450, DOI: 10.1017/s1041610223000327.Peer-Reviewed Original ResearchConceptsCost-consequence analysisTreatment of apathyFive-level questionnaireTrial 2Quality of lifeBinary logistic regressionPlacebo groupPlacebo treatmentMethylphenidate treatmentSignificant apathyHealth utilityResource utilization costsAlzheimer's diseaseLogistic regressionMethylphenidateTime interactionLevel questionnaireHealthcare systemCost predictorsMeasures analysisPatientsTreatmentDiseaseMonthsUtilization costsCost Consequence Analysis of ADMET 2
Mah E, Lanctôt K, Chen Q, Shade D, Scherer R, Vieira D, Coulibaly H, Rosenberg P, Lerner A, Padala P, Brawman-Mintzer O, van Dyck C, Porsteinsson A, Mintzer J, Herrmann N. Cost Consequence Analysis of ADMET 2. American Journal Of Geriatric Psychiatry 2023, 31: s101. DOI: 10.1016/j.jagp.2022.12.147.Peer-Reviewed Original ResearchCost-consequence analysisHealth utilityPlacebo groupMethylphenidate treatmentEuroQol-five dimensions-five levelsAlzheimer's diseaseHealth statesCommon neuropsychiatric symptomsHealth utility scoresQuality of lifeBinary logistic regressionApathy treatmentBaseline demographicsDifferent time pointsPreference-based measuresMethylphenidate groupNeuropsychiatric symptomsClinical trialsEQ-5DSignificant apathyPatientsUtility scoresBetter health stateLogistic regressionMethylphenidateInvestigating Partially Discordant Results in Phase 3 Studies of Aducanumab
Mallinckrodt C, Tian Y, Aisen P, Barkhof F, Cohen S, Dent G, Hansson O, Harrison K, Iwatsubo T, Mummery C, Muralidharan K, Nestorov I, Nisenbaum L, Rajagovindan R, von Hehn C, van Dyck C, Vellas B, Wu S, Zhu Y, Sandrock A, Chen T, Budd Haeberlein S. Investigating Partially Discordant Results in Phase 3 Studies of Aducanumab. The Journal Of Prevention Of Alzheimer's Disease 2023, 10: 171-177. PMID: 36946443, DOI: 10.14283/jpad.2023.6.Peer-Reviewed Original ResearchConceptsHigh-dose armAmyloid-related imaging abnormalitiesPhase 3 studyBaseline characteristicsImaging abnormalitiesAlzheimer's diseaseDiscordant resultsParallel-group studyHigh-dose groupMild AD dementiaEarly Alzheimer's diseaseMild cognitive impairmentSecondary endpointsTreatment armsAD dementiaAmyloid pathologyMulticenter studyRapid progressionSignificant treatment effectSafety resultsTarget dosePatientsAducanumabCognitive impairmentNon-significant difference
2009
Regional distribution and behavioral correlates of 5-HT2A receptors in Alzheimer's disease with [18F]deuteroaltanserin and PET
Santhosh L, Estok KM, Vogel RS, Tamagnan GD, Baldwin RM, Mitsis EM, MacAvoy MG, Staley JK, van Dyck CH. Regional distribution and behavioral correlates of 5-HT2A receptors in Alzheimer's disease with [18F]deuteroaltanserin and PET. Psychiatry Research 2009, 173: 212-217. PMID: 19682865, DOI: 10.1016/j.pscychresns.2009.03.007.Peer-Reviewed Original ResearchConceptsPositron emission tomographyAD patient samplesAlzheimer's diseaseAD patientsAnterior cingulateBehavioral symptomsBrain serotonin 2A (5-HT(2A)) receptorsPatient samplesConstant infusion paradigmSerotonin 2A receptorProbable Alzheimer's diseaseMajor behavioral symptomsBehavioral correlatesInfusion paradigmPostmortem studiesPsychotic symptomsElderly controlsMRI scansSubcortical regionsSerotonergic dysregulationEmission tomographyPatientsDiseaseInterest analysisSymptoms
2006
Apolipoprotein E ɛ4 Allele Increases Risk for Psychotic Symptoms in Alzheimer's Disease
Zdanys KF, Kleiman TG, MacAvoy MG, Black BT, Rightmer TE, Grey M, Garman KS, Tampi RR, Gelernter J, van Dyck CH. Apolipoprotein E ɛ4 Allele Increases Risk for Psychotic Symptoms in Alzheimer's Disease. Neuropsychopharmacology 2006, 32: 171-179. PMID: 16841077, DOI: 10.1038/sj.npp.1301148.Peer-Reviewed Original ResearchConceptsAD patientsPsychotic symptomsAlzheimer's diseaseBehavioral symptomsNeuropsychiatric InventoryApolipoprotein EMultiple logistic regression modelSporadic Alzheimer's diseaseGenetic risk factorsSevere-stage Alzheimer's diseaseLogistic regression modelsDifferent risk profilesDementia progressesRisk factorsIncrease riskBehavioral disturbancesPatientsDisease severitySymptomsSignificant psychosisRisk profileGreater riskApoEExploratory analysisDisease
2005
Apolipoprotein E epsilon4 is associated with atrophy of the amygdala in Alzheimer's disease
Basso M, Gelernter J, Yang J, MacAvoy MG, Varma P, Bronen RA, van Dyck CH. Apolipoprotein E epsilon4 is associated with atrophy of the amygdala in Alzheimer's disease. Neurobiology Of Aging 2005, 27: 1416-1424. PMID: 16182410, DOI: 10.1016/j.neurobiolaging.2005.08.002.Peer-Reviewed Original ResearchConceptsAlzheimer's diseaseAD patientsAPOE epsilon4AD groupImportant genetic risk factorApolipoprotein E epsilon4Regional brain atrophyAPOE epsilon4 alleleElderly control subjectsNormal elderly control subjectsGenetic risk factorsAmygdaloid volumesBrain atrophyControl subjectsEpsilon4 carriersRisk factorsEpsilon4 alleleHippocampal volumeEpsilon4 doseAnalysis of covarianceDisease severityPatientsEpsilon4AmygdalaAtrophy
2000
Dopamine and serotonin transporters in patients with schizophrenia: an imaging study with [123I]β-CIT
Laruelle M, Abi-Dargham A, van Dyck C, Gil R, D’Souza D, Krystal J, Seibyl J, Baldwin R, Innis R. Dopamine and serotonin transporters in patients with schizophrenia: an imaging study with [123I]β-CIT. Biological Psychiatry 2000, 47: 371-379. PMID: 10704949, DOI: 10.1016/s0006-3223(99)00257-7.Peer-Reviewed Original ResearchMeSH KeywordsAdultAge FactorsBrain StemCarrier ProteinsCase-Control StudiesCocaineDopamineDopamine Plasma Membrane Transport ProteinsFemaleHumansIodine RadioisotopesMaleMembrane GlycoproteinsMembrane Transport ProteinsMiddle AgedNeostriatumNerve Tissue ProteinsSchizophreniaSerotoninSerotonin Plasma Membrane Transport ProteinsTomography, Emission-Computed, Single-PhotonConceptsAmphetamine-induced dopamine releaseStriatal dopamine transporterDopamine transporterControl subjectsDAT densityDopamine releaseNegative symptomsStriatal DAT densityDuration of illnessDopamine nerve terminalsHealthy control subjectsSerotonin transporter densityCohort of subjectsRelative deficitSingle photon emissionNeurodegenerative processesPostmortem studiesNerve terminalsSerotonin functionTrend-level associationReceptor radiotracerPatientsDopamine functionLower striatalTransporter density
1998
Reduced brain serotonin transporter availability in major depression as measured by [123I]-2β-carbomethoxy-3β-(4-iodophenyl)tropane and single photon emission computed tomography
Malison R, Price L, Berman R, van Dyck C, Pelton G, Carpenter L, Sanacora G, Owens M, Nemeroff C, Rajeevan N, Baldwin R, Seibyl J, Innis R, Charney D. Reduced brain serotonin transporter availability in major depression as measured by [123I]-2β-carbomethoxy-3β-(4-iodophenyl)tropane and single photon emission computed tomography. Biological Psychiatry 1998, 44: 1090-1098. PMID: 9836013, DOI: 10.1016/s0006-3223(98)00272-8.Peer-Reviewed Original ResearchMeSH KeywordsAdultAntidepressive AgentsBrainBrain StemCarrier ProteinsCocaineDepressive DisorderFemaleHumansMaleMembrane GlycoproteinsMembrane Transport ProteinsMiddle AgedNerve Tissue ProteinsParoxetinePsychiatric Status Rating ScalesSerotoninSerotonin Plasma Membrane Transport ProteinsTomography, Emission-Computed, Single-PhotonConceptsDepressed patientsMajor depressionHealthy subjectsBrain serotonin transporter availabilitySerotonin transporterBeta-CIT SPECTDensity of brainPost-mortem brain tissuePathophysiology of depressionSerotonin transporter availabilityUnipolar major depressionBeta-CIT bindingSingle photon emissionSerotonergic neuronsBrain uptakeSERT availabilityTransporter availabilityBeta-CITBrain tissueCarbomethoxy-3βPatientsBlood plateletsDepressionPhoton emissionSignificant reduction
1997
The acetylcholine releaser linopirdine increases parietal regional cerebral blood flow in Alzheimer’s disease
van Dyck C, Lin C, Robinson R, Cellar J, Smith E, Nelson J, Arnsten A, Hoffer P. The acetylcholine releaser linopirdine increases parietal regional cerebral blood flow in Alzheimer’s disease. Psychopharmacology 1997, 132: 217-226. PMID: 9292621, DOI: 10.1007/s002130050339.Peer-Reviewed Original ResearchConceptsRegional cerebral blood flowParietal regional cerebral blood flowCerebral blood flowAlzheimer's diseaseAD patientsBlood flowDouble-blind trialWeeks of treatmentAD drug therapyProbable Alzheimer's diseaseParietal association cortexSingle photon emissionPlacebo TIDRCBF abnormalitiesCholinergic drugsDrug therapyHealthy controlsRCBF ratiosPharmacological interventionsHealthy subjectsAssociation cortexPatientsLinopirdineBrain regionsNeuropsychological function
1996
SPECT imaging of synaptic dopamine release in drug free schizophrenic patients: An experimental validation of the dopamine hypothesis of schizophrenia
Laruelle M, Abi-Dargham A, Gil R, van Dyck C, Erdos J, D'Souza D, Rosenblatt W, McCance-Katz E, Zea-Ponce Y, Zoghbi S, Baldwin R, Hoffer P, Krystal J, Charney D, Innis R. SPECT imaging of synaptic dopamine release in drug free schizophrenic patients: An experimental validation of the dopamine hypothesis of schizophrenia. Schizophrenia Research 1996, 18: 198-199. DOI: 10.1016/0920-9964(96)85619-2.Peer-Reviewed Original Research
1994
SPECT regional cerebral blood flow alterations in naltrexone-precipitated withdrawal from buprenorphine
van Dyck C, Rosen M, Thomas H, McMahon T, Wallace E, O'Connor P, Sullivan M, Krystal J, Hoffer P, Woods S, Kosten T. SPECT regional cerebral blood flow alterations in naltrexone-precipitated withdrawal from buprenorphine. Psychiatry Research 1994, 55: 181-191. PMID: 7701033, DOI: 10.1016/0925-4927(94)90013-2.Peer-Reviewed Original ResearchConceptsRegional cerebral blood flowRegional cerebral blood flow alterationsCerebral blood flow alterationsHexamethyl propylene amine oximeOpiate-induced analgesiaBlood flow alterationsSeverity of withdrawalCerebral blood flowOpiate-dependent patientsAnterior cingulate regionsAnterior cingulate cortexSingle photon emissionPlacebo administrationAmine oximeOpiate withdrawalRCBF ratiosWithdrawal severityBlood flowCingulate cortexCingulate regionsSignificant negative correlationBuprenorphineNaltrexonePlaceboPatients
1992
Peptide T Treatment of Cognitive Impairment in HIV‐Positive Intravenous Drug Users
Rosen M, Bridge T, O'Malley S, Pearsall H, Martini B, O'Connor P, Brett‐Smith H, Thomas H, Van Dyck C, Woods S, Kosten T. Peptide T Treatment of Cognitive Impairment in HIV‐Positive Intravenous Drug Users. American Journal On Addictions 1992, 1: 332-338. DOI: 10.1111/j.1521-0391.1992.tb00359.x.Peer-Reviewed Original ResearchHIV-positive intravenous drug usersDouble-blind crossover studyPeptide T treatmentHIV-positive patientsPeptide TOpen clinical trialIntravenous drug usersVasoactive intestinal peptideAIDS dementiaCrossover studyNeuropsychological improvementAZT treatmentIntestinal peptideClinical trialsDrug usersCognitive impairmentPatientsNeuropsychological functionCognitive functionT treatmentPlaceboThree timesWeeksPotential utilityTreatment