2024
Validation of a Simplified Tissue-to-Reference Ratio Measurement Using SUVR to Assess Synaptic Density Alterations in Alzheimer Disease with [11C]UCB-J PET
Young J, O’Dell R, Naganawa M, Toyonaga T, Chen M, Nabulsi N, Huang Y, Cooper E, Miller A, Lam J, Bates K, Ruan A, Nelsen K, Salardini E, Carson R, van Dyck C, Mecca A. Validation of a Simplified Tissue-to-Reference Ratio Measurement Using SUVR to Assess Synaptic Density Alterations in Alzheimer Disease with [11C]UCB-J PET. Journal Of Nuclear Medicine 2024, 65: jnumed.124.267419. PMID: 39299782, PMCID: PMC11533916, DOI: 10.2967/jnumed.124.267419.Peer-Reviewed Original ResearchDistribution volume ratioSUV ratioSynaptic densityEffect sizeAlzheimer's diseaseLongitudinal study of Alzheimer's diseaseMethods:</b> ParticipantsLongitudinal studyMeasure synaptic densityAD participantsStudy of Alzheimer's diseaseNormal cognitionReference regionOlder adultsMulticenterDensity alterationsCommentary on “Study Partner Report of Apathy in Older Adults is Associated With AD Biomarkers: Findings From the Harvard Aging Brain Study”
Khasnavis S, O'Dell R, van Dyck C, Mecca A. Commentary on “Study Partner Report of Apathy in Older Adults is Associated With AD Biomarkers: Findings From the Harvard Aging Brain Study”. American Journal Of Geriatric Psychiatry 2024, 32: 920-921. PMID: 38658231, DOI: 10.1016/j.jagp.2024.03.017.Peer-Reviewed Original ResearchSex differences in the pleiotropy of hearing difficulty with imaging-derived phenotypes: a brain-wide investigation
He J, Cabrera-Mendoza B, De Angelis F, Pathak G, Koller D, Curhan S, Curhan G, Mecca A, van Dyck C, Polimanti R. Sex differences in the pleiotropy of hearing difficulty with imaging-derived phenotypes: a brain-wide investigation. Brain 2024, 147: 3395-3408. PMID: 38454550, PMCID: PMC11449129, DOI: 10.1093/brain/awae077.Peer-Reviewed Original ResearchImaging-derived phenotypesHearing difficultiesBrain imaging-derived phenotypesSex-combined analysisLatent causal variable analysesMendelian randomization approachGeneralized linear regression analysisLocal genetic correlation analysisMultivariate generalized linear regression analysisGenome-wide association studiesLatent causal variableGenetic correlation analysisGenetic correlationsLocal genetic correlationMendelian randomizationPeripheral auditory systemOlder adultsGWAS dataLinear regression analysisHealth burdenGenomic regionsAssociation studiesPleiotropic regionsSex differencesTranscriptome regulation
2022
Aging of the brain in bipolar disorder: Illness- and onset-related effects in cortical thickness and subcortical gray matter volume
Villa L, Colic L, Kim J, Sankar A, Goldman D, Lessing B, Pittman B, Alexopoulos G, van Dyck C, Blumberg H. Aging of the brain in bipolar disorder: Illness- and onset-related effects in cortical thickness and subcortical gray matter volume. Journal Of Affective Disorders 2022, 323: 875-883. PMID: 36526112, PMCID: PMC9839524, DOI: 10.1016/j.jad.2022.12.026.Peer-Reviewed Original ResearchConceptsGray matter volumeOccipital cortical thicknessSubcortical gray matter volumesCortical thicknessBipolar disorderMatter volumeOlder adultsOnset of BDIndividuals age 40Striatal gray matter volumeGray matter reductionsOnset bipolar disorderGray matter decreasesPrefrontal cortical thicknessStructural brain differencesHigh suicide riskCross-sectional designHealthy controlsCognitive dysfunctionTreatment resistanceAge 40Striatal volumeSevere symptomsSuicide attempt historySuicide attempts
2021
EXERT: Impact of COVID‐19 on retention and intervention delivery of a large multisite exercise trial in adults with MCI
Baker L, Cotman C, Morrison R, Katula J, Chmelo E, Hodge H, Johnson C, Kipperman S, Matthews G, Bennett D, Mason J, LaCroix A, van Dyck C, Okonkwo O, Tam S, Fairchild J, Li C, Welsh‐Bohmer K, Feldman H, Group T. EXERT: Impact of COVID‐19 on retention and intervention delivery of a large multisite exercise trial in adults with MCI. Alzheimer's & Dementia 2021, 17: e056518. PMCID: PMC9011773, DOI: 10.1002/alz.056518.Peer-Reviewed Original ResearchIntervention deliveryExercise trialsSelf-reported adherence dataCOVID-19 pandemicCOVID-19 incidence ratesAdherence ratesMajority of participantsAerobic exerciseMonth 13Exercise sessionsIncidence rateAD biomarkersSedentary adultsAdherence dataAerobic groupWeekly callsRecruitment goalsInfection rateAddress barriersCOVID infection ratesOlder adultsGlobal health crisisWeeksMCICOVID-19Recruitment of a multi‐site randomized controlled trial of aerobic exercise for older adults with amnestic mild cognitive impairment: The EXERT trial
Shadyab AH, LaCroix AZ, Feldman HH, van Dyck C, Okonkwo OC, Tam SP, Fairchild JK, Welsh‐Bohmer K, Matthews G, Bennett D, Shadyab AA, Schafer KA, Morrison RH, Kipperman SA, Mason J, Tan D, Thomas RG, Cotman CW, Baker LD, Group F. Recruitment of a multi‐site randomized controlled trial of aerobic exercise for older adults with amnestic mild cognitive impairment: The EXERT trial. Alzheimer's & Dementia 2021, 17: 1808-1817. PMID: 34297895, PMCID: PMC9292825, DOI: 10.1002/alz.12401.Peer-Reviewed Original ResearchConceptsMild cognitive impairmentAmnestic mild cognitive impairmentAerobic exerciseOlder adultsCognitive impairmentMass mailingElectronic health recordsClinic rostersRandomized participantsExercise trialsIntervention trialsPublic service announcementsLocal registryTrialsHealth recordsAdultsCognitive trajectoriesCommunity presentationsImpairmentMailingAgeExerciseRecruitment rates
2020
Recruitment for a multi‐site randomized controlled trial of aerobic exercise for older adults with amnestic mild cognitive impairment: The EXERT trial
LaCroix A, van Dyck C, Okonkwo O, Tam S, Fairchild J, Li C, Welsh‐Bohmer K, Shadyab A, Matthews G, Bennett D, Shadyab A, Schafer K, Morrison R, Kipperman S, Tan D, Feldman H, Cotman C, Baker L, Group E. Recruitment for a multi‐site randomized controlled trial of aerobic exercise for older adults with amnestic mild cognitive impairment: The EXERT trial. Alzheimer's & Dementia 2020, 16 DOI: 10.1002/alz.044658.Peer-Reviewed Original ResearchAerobic exerciseCognitive impairmentPerson screeningExercise intervention studiesDays/weekAmnestic mild cognitive impairmentMild cognitive impairmentElectronic health recordsExercise trialsBrain healthConclusion AgeSedentary adultsFirst mailingAdults 65Wake Forest SchoolIntervention studiesClinical sitesStudy candidatesPatient rosterOlder adultsCoordinating CenterNational media campaignTrialsRecruitment challengesHealth records