2024
Medial amygdalar tau is associated with mood symptoms in preclinical Alzheimer’s disease
Li J, Tun S, Ficek-Tani B, Xu W, Wang S, Horien C, Toyonaga T, Nuli S, Zeiss C, Powers A, Zhao Y, Mormino E, Fredericks C. Medial amygdalar tau is associated with mood symptoms in preclinical Alzheimer’s disease. Biological Psychiatry Cognitive Neuroscience And Neuroimaging 2024 PMID: 39059466, DOI: 10.1016/j.bpsc.2024.07.012.Peer-Reviewed Original ResearchAssociated with mood symptomsMood symptomsAmyloid-positive individualsMedial amygdalaSeed-based functional connectivity analysisAssociated with anxiety symptomsSelf-reported mood symptomsPost hoc correlation analysisAlzheimer's diseaseFunctional connectivity analysisPreclinical Alzheimer's diseaseTau bindingOrbitofrontal cortexTau depositionAmygdalar connectivityEmotional processingAnxiety symptomsRetrosplenial cortexBetween-group differencesAmygdalaFunctional connectivityLateral amygdalaConnectivity analysisDepression scoresNeuropsychiatric symptoms
2022
Sex differences in default mode network connectivity in healthy aging adults
Ficek-Tani B, Horien C, Ju S, Xu W, Li N, Lacadie C, Shen X, Scheinost D, Constable T, Fredericks C. Sex differences in default mode network connectivity in healthy aging adults. Cerebral Cortex 2022, 33: 6139-6151. PMID: 36563018, PMCID: PMC10183749, DOI: 10.1093/cercor/bhac491.Peer-Reviewed Original ResearchConceptsDefault mode networkPreclinical Alzheimer's diseaseAlzheimer's diseaseSex differencesBrain connectivity changesDefault mode network connectivityIntrinsic connectivity distributionSeed-based analysisMode network connectivityMedial prefrontal cortexPosterior DMN nodesHealthy aging adultsImpact of sexLifetime riskDMN connectivityWhole brainPosterior cingulateDMN nodesSignificant sex differencesPrefrontal cortexConnectivity changesAging AdultsHealthy participantsDMN functionMode network
2021
Sex differences in connectivity in the default mode network in healthy aging adults
Ficek B, Horien C, Lacadie C, Shen X, Scheinost D, Constable T, Fredericks C. Sex differences in connectivity in the default mode network in healthy aging adults. Alzheimer's & Dementia 2021, 17 DOI: 10.1002/alz.056050.Peer-Reviewed Original ResearchIntrinsic connectivity distributionDefault mode networkAlzheimer's diseaseHealthy aging adultsElevated riskAging AdultsLarge cross-sectional studyPosterior default mode networkSex differencesMode networkCross-sectional cohortCross-sectional studyPreclinical Alzheimer's diseaseSymptomatic Alzheimer's diseaseResting-state scansSex-based differencesAnterior nodeAD showDMN connectivityHealthy adultsFunctional MRI dataNormal individualsResults FemalesZ-scoreFunctional connectivityAssociation of CSF Biomarkers With Hippocampal-Dependent Memory in Preclinical Alzheimer Disease.
Trelle AN, Carr VA, Wilson EN, Swarovski MS, Hunt MP, Toueg TN, Tran TT, Channappa D, Corso NK, Thieu MK, Jayakumar M, Nadiadwala A, Guo W, Tanner NJ, Bernstein JD, Litovsky CP, Guerin SA, Khazenzon AM, Harrison MB, Rutt BK, Deutsch GK, Chin FT, Davidzon GA, Hall JN, Sha SJ, Fredericks CA, Andreasson KI, Kerchner GA, Wagner AD, Mormino EC. Association of CSF Biomarkers With Hippocampal-Dependent Memory in Preclinical Alzheimer Disease. Neurology 2021, 96: e1470-e1481. PMID: 33408146, PMCID: PMC8055319, DOI: 10.1212/wnl.0000000000011477.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overAgingAlzheimer DiseaseAmyloid beta-PeptidesAssociation LearningBiomarkersCross-Sectional StudiesCuesDiscrimination, PsychologicalFemaleHippocampusHumansMaleMemoryMemory DisordersMemory, EpisodicMental RecallMiddle AgedNeuropsychological TestsPeptide FragmentsPsychomotor PerformanceTau ProteinsConceptsMemory taskHippocampal functionMnemonic discrimination taskMnemonic discrimination performanceUnimpaired older adultsHippocampal-dependent memoryPreclinical Alzheimer's diseaseEpisodic memoryPreclinical AD pathologyIndividual differencesMemory assessmentMemory performanceDiscrimination taskTask difficultyAssociative memoryDiscrimination performanceSingle batch analysisCross-sectional relationshipMemory studiesOlder adultsMemoryAlzheimer's disease biomarkersCSF β-amyloidElevated p-tauRecall
2018
Early affective changes and increased connectivity in preclinical Alzheimer's disease
Fredericks CA, Sturm VE, Brown JA, Hua AY, Bilgel M, Wong DF, Resnick SM, Seeley WW. Early affective changes and increased connectivity in preclinical Alzheimer's disease. Alzheimer's & Dementia Diagnosis Assessment & Disease Monitoring 2018, 10: 471-479. PMID: 30302368, PMCID: PMC6174255, DOI: 10.1016/j.dadm.2018.06.002.Peer-Reviewed Original ResearchAffective changesEmotional reactivityPreclinical Alzheimer's diseaseInterpersonal warmthSocial-emotional processingEnhanced emotional reactivitySuperior temporal sulcusNormal older adultsSalience network connectivityHigher functional connectivityAmyloid-positive individualsHigh global connectivityMild Alzheimer's diseaseTemporal sulcusSalience networkSignificant stimuliRight insulaFunctional connectivityCognitive declineOlder adultsAffective symptomsAlzheimer's diseaseLongitudinal assessmentKey regionsWarmth