2023
Cortical microstructural changes predict tau accumulation and episodic memory decline in older adults harboring amyloid
Gagliardi G, Rodriguez-Vieitez E, Montal V, Sepulcre J, Diez I, Lois C, Hanseeuw B, Schultz A, Properzi M, Papp K, Marshall G, Fortea J, Johnson K, Sperling R, Vannini P. Cortical microstructural changes predict tau accumulation and episodic memory decline in older adults harboring amyloid. Communications Medicine 2023, 3: 106. PMID: 37528163, PMCID: PMC10394044, DOI: 10.1038/s43856-023-00324-7.Peer-Reviewed Original ResearchLogical Memory delayed recallEpisodic memory declineMemory declineCortical mean diffusivityAmyloid-positive participantsEntorhinal cortexAmyloid statusCognitively normal older adultsHarvard Aging Brain StudyInferior temporal lobeNormal older adultsOlder adultsAging Brain StudyCognitively normal participantsTau accumulationCognitively normal individualsBrain microstructural changesInteraction effectsTau PET imagingDelayed recallBaseline amyloid statusTemporal lobeEntorhinal tauNormal participantsBrain studies
2021
Association of cortical microstructure with amyloid-β and tau: impact on cognitive decline, neurodegeneration, and clinical progression in older adults
Rodriguez-Vieitez E, Montal V, Sepulcre J, Lois C, Hanseeuw B, Vilaplana E, Schultz A, Properzi M, Scott M, Amariglio R, Papp K, Marshall G, Fortea J, Johnson K, Sperling R, Vannini P. Association of cortical microstructure with amyloid-β and tau: impact on cognitive decline, neurodegeneration, and clinical progression in older adults. Molecular Psychiatry 2021, 26: 7813-7822. PMID: 34588623, PMCID: PMC8873001, DOI: 10.1038/s41380-021-01290-z.Peer-Reviewed Original ResearchConceptsCortical mean diffusivityCognitive declineOlder adultsCognitively normal older adultsHarvard Aging Brain StudyCortical microstructureInferior temporal tauProgression to mild cognitive impairmentNormal older adultsBrain structural changesAmyloid-bAging Brain StudyCompound B PETLongitudinal cognitive declineAD-vulnerable regionsHippocampal atrophy ratesCognitively normal individualsAlzheimer's diseaseMild cognitive impairmentCognitive slopesStructural MRIEntorhinal tauCognitive AssessmentCognitive impairmentLongitudinal cognition
2017
Tau and amyloid β proteins distinctively associate to functional network changes in the aging brain
Sepulcre J, Sabuncu M, Li Q, Fakhri G, Sperling R, Johnson K. Tau and amyloid β proteins distinctively associate to functional network changes in the aging brain. Alzheimer's & Dementia 2017, 13: 1261-1269. PMID: 28366797, PMCID: PMC5623176, DOI: 10.1016/j.jalz.2017.02.011.Peer-Reviewed Original ResearchConceptsAging brainFunctional connectivityAlzheimer's disease-related pathologyCognitively normal individualsPositron emission tomography scanHyperconnected regionsFunctional network changesMisfolded tauDisease-related pathologyBrain areasEmission tomography scanAmyloid-bFunctional reorganizationB proteinHuman brainNeuronal circuitsTauBrainNeuronal functionNegative associationAmyloidCortical patternsNetwork changesElderly subjectsPositive association
2016
In Vivo Tau, Amyloid, and Gray Matter Profiles in the Aging Brain
Sepulcre J, Schultz A, Sabuncu M, Gomez-Isla T, Chhatwal J, Becker A, Sperling R, Johnson K. In Vivo Tau, Amyloid, and Gray Matter Profiles in the Aging Brain. Journal Of Neuroscience 2016, 36: 7364-7374. PMID: 27413148, PMCID: PMC4945661, DOI: 10.1523/jneurosci.0639-16.2016.Peer-Reviewed Original ResearchConceptsHallmarks of AD pathologyAmyloid-bAlzheimer's diseaseAD pathologyHallmarks of Alzheimer's diseaseElderly human brainPositron emission tomographyBrain tissue lossHuman brainTau depositionCortical associationMatter profileCortical mantleGrey matter intensityTauSpatial patternsLocal-to-localTau positron emission tomographyCognitively normal individualsEmission tomographyCognitive symptomsHallmarksTemporal lobeNetwork analysisAssociation areas