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Fonseca CS, Baker SL, Dobyns L, Janabi M, Jagust WJ, Harrison TM. Tau accumulation and atrophy predict amyloid independent cognitive decline in aging. Alzheimers Dement 2024; 20:2526-2537. [PMID: 38334195 PMCID: PMC11032527 DOI: 10.1002/alz.13654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 11/15/2023] [Accepted: 11/30/2023] [Indexed: 02/10/2024]
Abstract
INTRODUCTION Amyloid beta (Aβ) and tau pathology are cross-sectionally associated with atrophy and cognitive decline in aging and Alzheimer's disease (AD). METHODS We investigated relationships between concurrent longitudinal measures of Aβ (Pittsburgh compound B [PiB] positron emission tomography [PET]), tau (flortaucipir [FTP] PET), atrophy (structural magnetic resonance imaging), episodic memory (EM), and non-memory (NM) in 78 cognitively healthy older adults (OA). RESULTS Entorhinal FTP change was correlated with EM decline regardless of Aβ, but meta-temporal FTP and global PiB change were only associated with EM and NM decline in Aβ+ OA. Voxel-wise analyses revealed significant associations between temporal lobe FTP change and EM decline in all groups. PiB and FTP change were not associated with structural change, suggesting a functional or microstructural mechanism linking these measures to cognitive decline. DISCUSSION Our results show that longitudinal Aβ is linked to cognitive decline only in the presence of elevated Aβ, but longitudinal temporal lobe tau is associated with memory decline regardless of Aβ status. HIGHLIGHTS Entorhinal tau change was associated with memory decline in older adults (OA), regardless of amyloid beta (Aβ). Greater meta-region of interest (ROI) tau change correlated with memory decline in Aβ+ OA. Voxel-wise temporal tau change correlated with memory decline, regardless of Aβ. Meta-ROI tau and global amyloid change correlated with non-memory change in Aβ+ OA. Tau and amyloid accumulation were not associated with structural change in OA.
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Affiliation(s)
- Corrina S. Fonseca
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
| | | | - Lindsey Dobyns
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - Mustafa Janabi
- Lawrence Berkeley National LaboratoryBerkeleyCaliforniaUSA
| | - William J. Jagust
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
- Lawrence Berkeley National LaboratoryBerkeleyCaliforniaUSA
| | - Theresa M. Harrison
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
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Ziontz J, Harrison TM, Chen X, Giorgio J, Adams JN, Wang Z, Jagust W. Behaviorally meaningful functional networks mediate the effect of Alzheimer's pathology on cognition. Cereb Cortex 2024; 34:bhae134. [PMID: 38602736 PMCID: PMC11008686 DOI: 10.1093/cercor/bhae134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 01/25/2024] [Accepted: 03/12/2024] [Indexed: 04/12/2024] Open
Abstract
Tau pathology is associated with cognitive impairment in both aging and Alzheimer's disease, but the functional and structural bases of this relationship remain unclear. We hypothesized that the integrity of behaviorally meaningful functional networks would help explain the relationship between tau and cognitive performance. Using resting state fMRI, we identified unique networks related to episodic memory and executive function cognitive domains. The episodic memory network was particularly related to tau pathology measured with positron emission tomography in the entorhinal and temporal cortices. Further, episodic memory network strength mediated the relationship between tau pathology and cognitive performance above and beyond neurodegeneration. We replicated the association between these networks and tau pathology in a separate cohort of older adults, including both cognitively unimpaired and mildly impaired individuals. Together, these results suggest that behaviorally meaningful functional brain networks represent a functional mechanism linking tau pathology and cognition.
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Affiliation(s)
- Jacob Ziontz
- Helen Wills Neuroscience Institute, UC Berkeley, 250 Warren Hall, 2195 Hearst Ave, Berkeley, CA 94720, United States
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, UC Berkeley, 250 Warren Hall, 2195 Hearst Ave, Berkeley, CA 94720, United States
| | - Xi Chen
- Helen Wills Neuroscience Institute, UC Berkeley, 250 Warren Hall, 2195 Hearst Ave, Berkeley, CA 94720, United States
| | - Joseph Giorgio
- Helen Wills Neuroscience Institute, UC Berkeley, 250 Warren Hall, 2195 Hearst Ave, Berkeley, CA 94720, United States
- School of Psychological Sciences, College of Engineering, Science and the Environment, University of Newcastle, University Dr, Callaghan, Newcastle, NSW 2305, Australia
| | - Jenna N Adams
- Department of Neurobiology and Behavior and Center for the Neurobiology of Learning and Memory, 1400 Biological Sciences III, University of California, Irvine, Irvine, CA 92697, United States
| | - Zehao Wang
- Helen Wills Neuroscience Institute, UC Berkeley, 250 Warren Hall, 2195 Hearst Ave, Berkeley, CA 94720, United States
| | - William Jagust
- Helen Wills Neuroscience Institute, UC Berkeley, 250 Warren Hall, 2195 Hearst Ave, Berkeley, CA 94720, United States
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley, CA 94720, United States
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Landau SM, Lee J, Murphy A, Ward TJ, Harrison TM, Baker SL, DeCarli C, Harvey D, Tosun D, Weiner MW, Koeppe RA, Jagust WJ. Individuals with Alzheimer's disease and low tau burden: Characteristics and implications. Alzheimers Dement 2024; 20:2113-2127. [PMID: 38241084 PMCID: PMC10984443 DOI: 10.1002/alz.13609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 11/14/2023] [Accepted: 11/20/2023] [Indexed: 01/21/2024]
Abstract
INTRODUCTION Abnormal amyloid-beta (Aβ) and tau deposition define Alzheimer's Disease (AD), but non-elevated tau is relatively frequent in patients on the AD pathway. METHODS We examined characteristics and regional patterns of 397 Aβ+ unimpaired and impaired individuals with low tau (A+T-) in relation to their higher tau counterparts (A+T+). RESULTS Seventy-one percent of Aβ+ unimpaired and 42% of impaired Aβ+ individuals were categorized as A+T- based on global tau. In impaired individuals only, A+T- status was associated with older age, male sex, and greater cardiovascular risk. α-synuclein was linked to poorer cognition, particularly when tau was low. Tau burden was most frequently elevated in a common set of temporal regions regardless of T+/T- status. DISCUSSION Low tau is relatively common in patients on the AD pathway and is linked to comorbidities that contribute to impairment. These findings have implications for the selection of individuals for Aβ- and tau-modifying therapies.
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Affiliation(s)
- Susan M. Landau
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - JiaQie Lee
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - Alice Murphy
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - Tyler J. Ward
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - Theresa M. Harrison
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - Suzanne L. Baker
- Molecular Biophysics and Integrated BioimagingLawrence Berkeley National LaboratoryBerkeleyCaliforniaUSA
| | - Charles DeCarli
- School of MedicineUniversity of California, DavisSacramentoCaliforniaUSA
| | - Danielle Harvey
- School of MedicineUniversity of California, DavisSacramentoCaliforniaUSA
| | - Duygu Tosun
- Department of Radiology and Biomedical ImagingUniversity of CaliforniaSan FranciscoCaliforniaUSA
| | - Michael W. Weiner
- Department of Radiology and Biomedical ImagingUniversity of CaliforniaSan FranciscoCaliforniaUSA
- Department of Veterans Affairs Medical CenterNorthern California Institute for Research and Education (NCIRE)Center for Imaging of Neurodegenerative DiseasesSan FranciscoCaliforniaUSA
- Department of MedicineDepartment of Psychiatry and Behavioral SciencesDepartment of NeurologyUniversity of CaliforniaSan FranciscoCaliforniaUSA
| | - Robert A. Koeppe
- Department of RadiologyUniversity of MichiganAnn ArborMichiganUSA
| | - William J. Jagust
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
- Molecular Biophysics and Integrated BioimagingLawrence Berkeley National LaboratoryBerkeleyCaliforniaUSA
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Chen X, Toueg TN, Harrison TM, Baker SL, Jagust WJ. Regional Tau Deposition Reflects Different Pathways of Subsequent Neurodegeneration and Memory Decline in Cognitively Normal Older Adults. Ann Neurol 2024; 95:249-259. [PMID: 37789559 PMCID: PMC10843500 DOI: 10.1002/ana.26813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 09/12/2023] [Accepted: 09/27/2023] [Indexed: 10/05/2023]
Abstract
OBJECTIVE Tau pathology is recognized as a primary contributor to neurodegeneration and clinical symptoms in Alzheimer's disease (AD). This study aims to localize the early tau pathology in cognitively normal older people that is predictive of subsequent neurodegeneration and memory decline, and delineate factors underlying tau-related memory decline in individuals with and without β-amyloid (Aβ). METHODS A total of 138 cognitively normal older individuals from the Berkeley Aging Cohort Study underwent 11 C-Pittsburgh Compound-B (PiB) positron emission tomography (PET) to determine Aβ positivity and 18 F-Flortaucipir (FTP) PET to measure tau deposition, with prospective cognitive assessments and structural magnetic resonance imaging. Voxel-wise FTP analyses examined associations between baseline tau deposition and longitudinal memory decline, longitudinal hippocampal atrophy, and longitudinal cortical thinning in AD signature regions. We also examined whether hippocampal atrophy and cortical thinning mediate tau effects on future memory decline. RESULTS We found Aβ-dependent tau associations with memory decline in the entorhinal and temporoparietal regions, Aβ-independent tau associations with hippocampal atrophy within the medial temporal lobe (MTL), and that widespread tau was associated with mean cortical thinning in AD signature regions. Tau-related memory decline was mediated by hippocampal atrophy in Aβ- individuals and by mean cortical thinning in Aβ+ individuals. INTERPRETATION Our results suggest that tau may affect memory through different mechanisms in normal aging and AD. Early tau deposition independent of Aβ predicts subsequent hippocampal atrophy that may lead to memory deficits in normal older individuals, whereas elevated cortical tau deposition is associated with cortical thinning that may lead to more severe memory decline in AD. ANN NEUROL 2024;95:249-259.
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Affiliation(s)
- Xi Chen
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA, USA
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Tyler N Toueg
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA, USA
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA, USA
| | - Suzanne L Baker
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - William J Jagust
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA, USA
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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Pezzoli S, Giorgio J, Martersteck A, Dobyns L, Harrison TM, Jagust WJ. Successful cognitive aging is associated with thicker anterior cingulate cortex and lower tau deposition compared to typical aging. Alzheimers Dement 2024; 20:341-355. [PMID: 37614157 PMCID: PMC10916939 DOI: 10.1002/alz.13438] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/30/2023] [Accepted: 08/01/2023] [Indexed: 08/25/2023]
Abstract
INTRODUCTION There is no consensus on either the definition of successful cognitive aging (SA) or the underlying neural mechanisms. METHODS We examined the agreement between new and existing definitions using: (1) a novel measure, the cognitive age gap (SA-CAG, cognitive-predicted age minus chronological age), (2) composite scores for episodic memory (SA-EM), (3) non-memory cognition (SA-NM), and (4) the California Verbal Learning Test (SA-CVLT). RESULTS Fair to moderate strength of agreement was found between the four definitions. Most SA groups showed greater cortical thickness compared to typical aging (TA), especially in the anterior cingulate and midcingulate cortices and medial temporal lobes. Greater hippocampal volume was found in all SA groups except SA-NM. Lower entorhinal 18 F-Flortaucipir (FTP) uptake was found in all SA groups. DISCUSSION These findings suggest that a feature of SA, regardless of its exact definition, is resistance to tau pathology and preserved cortical integrity, especially in the anterior cingulate and midcingulate cortices. HIGHLIGHTS Different approaches have been used to define successful cognitive aging (SA). Regardless of definition, different SA groups have similar brain features. SA individuals have greater anterior cingulate thickness and hippocampal volume. Lower entorhinal tau deposition, but not amyloid beta is related to SA. A combination of cortical integrity and resistance to tau may be features of SA.
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Affiliation(s)
- Stefania Pezzoli
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
- Lawrence Berkeley National LaboratoryBerkeleyCaliforniaUSA
| | - Joseph Giorgio
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
- University of NewcastleNewcastleNSWAustralia
| | - Adam Martersteck
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - Lindsey Dobyns
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - Theresa M. Harrison
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
| | - William J. Jagust
- Helen Wills Neuroscience InstituteUniversity of CaliforniaBerkeleyCaliforniaUSA
- Lawrence Berkeley National LaboratoryBerkeleyCaliforniaUSA
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Xu Y, Harrison TM. Socioemotional and Behavioral Problems of Grandchildren Raised by Grandparents: The Role of Grandparent-Grandchild Relational Closeness and Conflict. Children (Basel) 2023; 10:1623. [PMID: 37892286 PMCID: PMC10605244 DOI: 10.3390/children10101623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 10/29/2023]
Abstract
This study examined the associations of grandparent-grandchild relational closeness and conflict with grandchildren's socioemotional and behavioral problems, including emotional symptoms, conduct problems, hyperactivity, peer problems, and abnormal prosocial behaviors. We analyzed primary cross-sectional survey data collected from custodial grandparents in the United States using logistic regression models. The results indicated that grandparent-grandchild relational closeness was significantly associated with lower odds of custodial grandchildren having emotional symptoms, conduct problems, peer problems, and abnormal prosocial behaviors, whereas grandparent-grandchild relational conflict was significantly associated with higher odds of emotional symptoms, conduct problems, hyperactivity, peer problems, and abnormal prosocial behaviors. Implications for increasing grandparent-grandchild relational closeness and decreasing relational conflicts among grandparent-headed families are discussed, which might improve grandchildren's socioemotional and behavioral well-being.
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Affiliation(s)
- Yanfeng Xu
- College of Social Work, University of South Carolina, Columbia, SC 29208, USA
| | - Theresa M Harrison
- Carolina Family Engagement Center, College of Education, University of South Carolina, Columbia, SC 29208, USA
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Cassady KE, Chen X, Adams JN, Harrison TM, Zhuang K, Maass A, Baker S, Jagust W. Effect of Alzheimer's Pathology on Task-Related Brain Network Reconfiguration in Aging. J Neurosci 2023; 43:6553-6563. [PMID: 37604690 PMCID: PMC10513069 DOI: 10.1523/jneurosci.0023-23.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 08/02/2023] [Accepted: 08/06/2023] [Indexed: 08/23/2023] Open
Abstract
Large-scale brain networks undergo widespread changes with older age and in neurodegenerative diseases such as Alzheimer's disease (AD). Research in young adults (YA) suggest that the underlying functional architecture of brain networks remains relatively consistent between rest and task states. However, it remains unclear whether the same is true in aging and to what extent any changes may be related to accumulation of AD pathology such as β-amyloid (Aβ) and tau. Here, we examined age-related differences in functional connectivity (FC) between rest and an object-scene mnemonic discrimination task using fMRI in young and older adults (OA; both females and males). We used an a priori episodic memory network (EMN) parcellation scheme associated with object and scene processing, that included anterior-temporal regions and posterior-medial regions. We also used positron emission topography to measure Aβ and tau in older adults. The correlation between rest and task FC (i.e., FC similarity) was reduced in older compared with younger adults. Older adults with lower FC similarity in EMN had higher levels of tau in the same EMN regions and performed worse during object, but not scene, trials during the fMRI task. These findings link AD pathology, particularly tau, to a less stable functional architecture in memory networks. They also suggest that smaller changes in FC organization between rest and task states may facilitate better performance in older age. Interpretations are limited by methodological factors related to different acquisition directions and durations between rest and task scans.SIGNIFICANCE STATEMENT The brain's large-scale network organization is relatively consistent between rest and task states in young adults (YA). We found that memory networks in older adults (OA) were less correlated between rest and (memory) task states compared with young adults. Older adults with less correlated brain networks also had higher levels of Alzheimer's disease (AD) pathology in the same regions, suggesting that a less stable network architecture may reflect the early evolution of AD. Older adults with less correlated brain networks also performed worse during the memory task suggesting that more similar network organization between rest and task states may facilitate better performance in older age.
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Affiliation(s)
- Kaitlin E Cassady
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California 94720
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
| | - Xi Chen
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California 94720
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
| | - Jenna N Adams
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
| | - Kailin Zhuang
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
| | - Anne Maass
- German Center for Neurodegenerative Disease, 39120 Magdeburg, Germany
| | - Suzanne Baker
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - William Jagust
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California 94720
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
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Han F, Lee J, Chen X, Ziontz J, Ward T, Landau SM, Baker SL, Harrison TM, Jagust WJ. Global brain activity and its coupling with cerebrospinal fluid flow is related to tau pathology. bioRxiv 2023:2023.09.12.557492. [PMID: 37745434 PMCID: PMC10515801 DOI: 10.1101/2023.09.12.557492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Amyloid-β (Aβ) and tau deposition constitute Alzheimer's disease (AD) neuropathology. Cortical tau deposits first in the entorhinal cortex and hippocampus and then propagates to neocortex in an Aβ-dependent manner. Tau also tends to accumulate earlier in higher-order association cortex than in lower-order primary sensory-motor cortex. While previous research has examined the production and spread of tau, little attention has been paid to its clearance. Low-frequency (<0.1 Hz) global brain activity during the resting state is coupled with cerebrospinal fluid (CSF) flow and potentially reflects glymphatic clearance. Here we report that tau deposition in subjects with evaluated Aβ, accompanied by cortical thinning and cognitive decline, is strongly associated with decreased coupling between CSF flow and global brain activity. Substantial modulation of global brain activity is also manifested as propagating waves of brain activation between higher- and lower-order regions, resembling tau spreading. Together, the findings suggest an important role of resting-state global brain activity in AD tau pathology.
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Affiliation(s)
- Feng Han
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, USA
| | - JiaQie Lee
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, USA
| | - Xi Chen
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, USA
- Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Jacob Ziontz
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, USA
| | - Tyler Ward
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, USA
| | - Susan M Landau
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, USA
| | | | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, USA
| | - William J Jagust
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, USA
- Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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Aslanyan V, Ortega N, Fenton L, Harrison TM, Raman R, Mack WJ, Pa J. Protective effects of sleep duration and physical activity on cognitive performance are influenced by β-amyloid and brain volume but not tau burden among cognitively unimpaired older adults. Neuroimage Clin 2023; 39:103460. [PMID: 37379733 PMCID: PMC10316126 DOI: 10.1016/j.nicl.2023.103460] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 06/21/2023] [Accepted: 06/21/2023] [Indexed: 06/30/2023]
Abstract
BACKGROUND AND OBJECTIVES Sleep and physical activity have gained traction as modifiable risk factors for Alzheimer's disease. Sleep duration is linked to amyloid-β clearance while physical activity is associated with brain volume maintenance. We investigate how sleep duration and physical activity are associated with cognition by testing if the associations between sleep duration or physical activity to cognition are explained by amyloid-β burden and brain volume, respectively. Additionally, we explore the mediating role of tau deposition in sleep duration-cognition and physical activity-cognition relationships. METHODS This cross-sectional study obtained data from participants in the Anti-Amyloid Treatment in Asymptomatic Alzheimer's Disease (A4) study, a randomized clinical trial. In trial screening, cognitively unimpaired participants (age 65-85 years) underwent amyloid PET and brain MRI; APOE genotype and lifestyle questionnaire data were obtained. Cognitive performance was assessed using the Preclinical Alzheimer Cognitive Composite (PACC). Self-reported nightly sleep duration and weekly physical activity were the primary predictors. Regional Aβ and tau pathologies and volumes were the proposed variables influencing relationships between sleep duration or physical activity and cognition. RESULTS Aβ data were obtained from 4322 participants (1208 with MRI, 59% female, 29% amyloid positive). Sleep duration was associated with a Aβ composite score (β = -0.005, CI: (-0.01, -0.001)) and Aβ burden in the anterior cingulate (ACC) (β = -0.012, CI: (-0.017, -0.006)) and medial orbitofrontal cortices (MOC) (β = -0.009, CI: (-0.014, -0.005)). Composite (β = -1.54, 95% CI:(-1.93, -1.15)), ACC (β = -1.22, CI:(-1.54, -0.90)) and MOC (β = -1.44, CI:(-1.86, -1.02)) Aβ deposition was associated with PACC. Sleep duration-PACC association was explained by Aβ burden in path analyses. Physical activity was associated with hippocampal (β = 10.57, CI: (1.06, 20.08)), parahippocampal (β = 9.3, CI: (1.69, 16.91)), entorhinal (β = 14.68, CI: (1.75, 27.61), and fusiform gyral (β = 38.38, CI: (5.57, 71.18)) volumes, which were positively associated with PACC (p < 0.02 for hippocampus, entorhinal cortex and fusiform gyrus). Physical activity-cognition relationship was explained by regional volumes. PET tau imaging was available for 443 participants. No direct sleep duration-tau burden, physical activity by tau burden, or mediation by regional tau was observed in sleep duration-cognition or physical activity-cognition relationships. DISCUSSION Sleep duration and physical activity are associated with cognition through independent paths of brain Aβ and brain volume, respectively. These findings implicate neural and pathological mechanisms for the relationships between sleep duration and physical activity on cognition. Dementia risk reduction approaches that emphasize the adequate sleep duration and a physically active lifestyle may benefit those with risk for Alzheimer's disease.
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Affiliation(s)
- Vahan Aslanyan
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90032, USA
| | - Nancy Ortega
- Alzheimer's Disease Cooperative Study (ADCS), Department of Neurosciences, University of California, San Diego, CA 92121, USA
| | - Laura Fenton
- Department of Psychology, USC Dornsife College of Letters, Arts, and Sciences, Los Angeles, CA 90089, USA
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA 94720, USA
| | - Rema Raman
- Alzheimer Therapeutic Research Institute, Keck School of Medicine, University of Southern California, San Diego, CA 92093, USA
| | - Wendy J Mack
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90032, USA
| | - Judy Pa
- Alzheimer's Disease Cooperative Study (ADCS), Department of Neurosciences, University of California, San Diego, CA 92121, USA.
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Berry AS, Harrison TM. New perspectives on the basal forebrain cholinergic system in Alzheimer's disease. Neurosci Biobehav Rev 2023; 150:105192. [PMID: 37086935 DOI: 10.1016/j.neubiorev.2023.105192] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/27/2023] [Accepted: 03/28/2023] [Indexed: 04/24/2023]
Abstract
The basal forebrain cholinergic system (BFCS) has long been implicated in age-related cognitive changes and the pathophysiology of Alzheimer's disease (AD). Limitations of cholinergic interventions helped to inspire a shift away from BFCS in AD research. A resurgence in interest in the BFCS following methodological and analytical advances has resulted in a call for the BFCS to be examined in novel frameworks. We outline the basic structure and function of the BFCS, its role in supporting cognitive and affective function, and its vulnerability to aging and AD. We consider the BFCS in the context of the amyloid hypothesis and evolving concepts in AD research: resilience and resistance to pathology, selective neuronal vulnerability, trans-synaptic pathology spread and sleep health. We highlight 1) the potential role of the BFCS in cognitive resilience, 2) recent work refining understanding about the selective vulnerability of BFCS to AD, 3) BFCS connectivity that suggests it is related to tau spreading and neurodegeneration and 4) the gap between BFCS involvement in AD and sleep-wake cycles.
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Affiliation(s)
- Anne S Berry
- Brandeis University, Waltham, Massachusetts, 02453.
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California, 94720
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Landau SM, Ward TJ, Murphy A, Iaccarino L, Harrison TM, La Joie R, Baker S, Koeppe RA, Jagust WJ. Quantification of amyloid beta and tau PET without a structural MRI. Alzheimers Dement 2023; 19:444-455. [PMID: 35429219 DOI: 10.1002/alz.12668] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 02/23/2022] [Accepted: 02/25/2022] [Indexed: 01/15/2023]
Abstract
INTRODUCTION Relying on magnetic resonance imaging (MRI) for quantification of positron emission tomography (PET) images may limit generalizability of the results. We evaluated several MRI-free approaches for amyloid beta (Aβ) and tau PET quantification relative to MRI-dependent quantification cross-sectionally and longitudinally. METHODS We compared baseline MRI-free and MRI-dependent measurements of Aβ PET ([18F]florbetapir [FBP], N = 1290, [18F]florbetaben [FBB], N = 290) and tau PET ([18F]flortaucipir [FTP], N = 768) images with respect to continuous and dichotomous agreement, effect sizes of Aβ+ impaired versus Aβ- unimpaired groups, and longitudinal standardized uptake value ratio (SUVR) slopes in a subset of individuals. RESULTS The best-performing MRI-free approaches had high continuous and dichotomous agreement with MRI-dependent SUVRs for Aβ PET and temporal flortaucipir (R2 ≥0.95; ± agreement ≥92%) and for Alzheimer's disease-related effect sizes; agreement was slightly lower for entorhinal flortaucipir and longitudinal slopes. DISCUSSION There is no consistent loss of baseline or longitudinal AD-related signal with MRI-free Aβ and tau PET image quantification.
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Affiliation(s)
- Susan M Landau
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California, USA
| | - Tyler J Ward
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California, USA
| | - Alice Murphy
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California, USA
| | - Leonardo Iaccarino
- Memory and Aging Center, University of California, San Francisco, California, USA
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California, USA
| | - Renaud La Joie
- Memory and Aging Center, University of California, San Francisco, California, USA
| | - Suzanne Baker
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Robert A Koeppe
- Division of Nuclear Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - William J Jagust
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California, USA.,Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California, USA
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Dobyns L, Zhuang K, Baker SL, Mungas D, Jagust WJ, Harrison TM. An empirical measure of resilience explains individual differences in the effect of tau pathology on memory change in aging. Nat Aging 2023; 3:229-237. [PMID: 37118122 PMCID: PMC10148952 DOI: 10.1038/s43587-022-00353-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 12/19/2022] [Indexed: 04/30/2023]
Abstract
Accurately measuring resilience to preclinical Alzheimer's disease (AD) pathology is essential to understanding an important source of variability in cognitive aging. In a cohort of cognitively normal older adults (n = 123, age 76.75 ± 6.15 yr), we built a multifactorial measure of resilience which moderated the effect of AD pathology on longitudinal cognitive change. Linear residuals-based measures of resilience, along with other proxy measures (education and vocabulary), were entered into a hierarchical partial least-squares path model defining a putative consolidated resilience latent factor (model goodness of fit = 0.77). In a set of validation analyses using linear mixed models predicting longitudinal cognitive change, there was a significant three-way interaction among consolidated resilience, tau and time on episodic memory change (P = 0.001) such that higher resilience blunted the effect of tau pathology on episodic memory decline. Interactions between consolidated resilience and amyloid pathology on non-memory cognition decline suggested that resilience moderates pathology-specific effects on different cognitive domains.
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Affiliation(s)
- Lindsey Dobyns
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, USA
| | - Kailin Zhuang
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, USA
| | | | - Dan Mungas
- Department of Neurology, University of California, Davis, Sacramento, CA, USA
| | - William J Jagust
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, USA
- Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, USA.
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Harrison TM, Ward TJ, Murphy A, Baker SL, Dominguez PA, Koeppe R, Vemuri P, Lockhart SN, Jung Y, Harvey DJ, Lovato L, Toga AW, Masdeu J, Oh H, Gitelman DR, Aggarwal N, Snyder HM, Baker LD, DeCarli C, Jagust WJ, Landau SM. Optimizing quantification of MK6240 tau PET in unimpaired older adults. Neuroimage 2023; 265:119761. [PMID: 36455762 PMCID: PMC9957642 DOI: 10.1016/j.neuroimage.2022.119761] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 10/28/2022] [Accepted: 11/21/2022] [Indexed: 11/29/2022] Open
Abstract
Accurate measurement of Alzheimer's disease (AD) pathology in older adults without significant clinical impairment is critical to assessing intervention strategies aimed at slowing AD-related cognitive decline. The U.S. Study to Protect Brain Health Through Lifestyle Intervention to Reduce Risk (POINTER) is a 2-year randomized controlled trial to evaluate the effect of multicomponent risk reduction strategies in older adults (60-79 years) who are cognitively unimpaired but at increased risk for cognitive decline/dementia due to factors such as cardiovascular disease and family history. The POINTER Imaging ancillary study is collecting tau-PET ([18F]MK6240), beta-amyloid (Aβ)-PET ([18F]florbetaben [FBB]) and MRI data to evaluate neuroimaging biomarkers of AD and cerebrovascular pathophysiology in this at-risk sample. Here 481 participants (70.0±5.0; 66% F) with baseline MK6240, FBB and structural MRI scans were included. PET scans were coregistered to the structural MRI which was used to create FreeSurfer-defined reference regions and target regions of interest (ROIs). We also created off-target signal (OTS) ROIs to examine the magnitude and distribution of MK6240 OTS across the brain as well as relationships between OTS and age, sex, and race. OTS was unimodally distributed, highly correlated across OTS ROIs and related to younger age and sex but not race. Aiming to identify an optimal processing approach for MK6240 that would reduce the influence of OTS, we compared our previously validated MRI-guided standard PET processing and 6 alternative approaches. The alternate approaches included combinations of reference region erosion and meningeal OTS masking before spatial smoothing as well as partial volume correction. To compare processing approaches we examined relationships between target ROIs (entorhinal cortex (ERC), hippocampus or a temporal meta-ROI (MetaROI)) SUVR and age, sex, race, Aβ and a general cognitive status measure, the Modified Telephone Interview for Cognitive Status (TICSm). Overall, the processing approaches performed similarly, and none showed a meaningful improvement over standard processing. Across processing approaches we observed previously reported relationships with MK6240 target ROIs including positive associations with age, an Aβ+> Aβ- effect and negative associations with cognition. In sum, we demonstrated that different methods for minimizing effects of OTS, which is highly correlated across the brain within subject, produced no substantive change in our performance metrics. This is likely because OTS contaminates both reference and target regions and this contamination largely cancels out in SUVR data. Caution should be used when efforts to reduce OTS focus on target or reference regions in isolation as this may exacerbate OTS contamination in SUVR data.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - William J Jagust
- University of California Berkeley, USA; Lawrence Berkeley National Laboratory, USA
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14
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Ward TJ, Harrison TM, Murphy A, Baker SL, Mormino EC, Koeppe RA, Jagust WJ, Landau SM. Whole brain MRI‐free tau and amyloid PET quantification. Alzheimers Dement 2022. [DOI: 10.1002/alz.063456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | | | - Alice Murphy
- University of California Berkeley Berkeley CA USA
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15
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Pezzoli S, Giorgio J, Harrison TM, Martersteck A, Jagust WJ. Definitions and characteristics of successful cognitive aging. Alzheimers Dement 2022. [DOI: 10.1002/alz.064728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Stefania Pezzoli
- Lawrence Berkeley National Laboratory Berkeley CA USA
- University of California, Berkeley Berkeley CA USA
| | - Joseph Giorgio
- University of California, Berkeley Berkeley CA USA
- University of Newcastle Newcastle NSW Australia
| | | | | | - William J. Jagust
- Lawrence Berkeley National Laboratory Berkeley CA USA
- University of California, Berkeley Berkeley CA USA
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16
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Chen X, Toueg TN, Harrison TM, Baker SL, Jagust WJ. Pathological tau in cognitively normal older adults predicts prospective neurodegeneration and cognitive decline. Alzheimers Dement 2022. [DOI: 10.1002/alz.062426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Xi Chen
- University of California, Berkeley Berkeley CA USA
- Lawrence Berkeley National Laboratory Berkeley CA USA
| | | | | | | | - William J. Jagust
- University of California, Berkeley Berkeley CA USA
- Lawrence Berkeley National Laboratory Berkeley CA USA
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Dominguez PA, Ward TJ, Harrison TM, Landau SM, Lopresti BJ, Minhas DS, Klunk WE, Jagust WJ, Baker SL. Evaluation of PVC methods on head‐to‐head FTP and MK6240. Alzheimers Dement 2022. [DOI: 10.1002/alz.065914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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18
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Higgins C, Aslanyan V, Cody KA, Ward TJ, Choi S, Wei J, Amofa PA, Crane PK, Harrison TM. Tau PET shows both direct and atrophy‐mediated effects on cognition: 4‐way decomposition of the effects of tau PET and atrophy on cognitive performance. Alzheimers Dement 2022. [DOI: 10.1002/alz.061103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Cesar Higgins
- University of Michigan, School of Public Health, Department of Epidemiology Ann Arbor MI USA
| | - Vahan Aslanyan
- Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California Los Angeles CA USA
| | - Karly Alex Cody
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin‐Madison School of Medicine and Public Health Madison WI USA
| | | | | | - Jingkai Wei
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolin Columbia SC USA
| | - Priscilla A Amofa
- University of Florida, Department of Clinical and Health Psychology Gainesville FL USA
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Baker SL, He M, Dominguez PA, Landau SM, Harrison TM, La Joie R, Ward TJ, Zhuang K, Rabinovici GD, Jagust WJ. Impact of off‐target signal on longitudinal FTP quantification. Alzheimers Dement 2022. [DOI: 10.1002/alz.061262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Mark He
- Columbia University New York City NY USA
| | | | | | | | - Renaud La Joie
- Memory and Aging Center, UCSF Weill Institute for Neurosciences, University of California, San Francisco San Francisco CA USA
| | | | | | - Gil D. Rabinovici
- Memory and Aging Center, UCSF Weill Institute for Neurosciences, University of California, San Francisco San Francisco CA USA
| | - William J. Jagust
- Lawrence Berkeley National Laboratory Berkeley CA USA
- University of California, Berkeley Berkeley CA USA
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20
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Phillips J, Dumitrescu L, Archer DB, Smith AN, Mukherjee S, Lee ML, Choi S, Scollard P, Trittschuh EH, Mez JB, Mahoney ER, Bush WS, Engelman CD, Lu Q, Fardo DW, Widaman KF, Buckley RF, Mormino EC, Harrison TM, Sanders E, Clark LR, Gifford KA, Vardarajan BN, Cuccaro ML, Pericak‐Vance MA, Farrer LA, Wang L, Schellenberg GD, Haines JL, Jefferson AL, Johnson SC, Kukull WA, Albert MS, Keene CD, Saykin AJ, Larson EB, Sperling RA, Mayeux R, Goate A, Neuner S, Renton AE, Marcora E, Fulton‐Howard B, Patel T, Bennett DA, Schneider JA, Crane PK, Hohman TJ. Longitudinal GWAS Identifies Novel Genetic Variants and Complex Traits Associated with Resilience to Alzheimer’s Disease. Alzheimers Dement 2022. [DOI: 10.1002/alz.067816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Jared Phillips
- Vanderbilt Memory & Alzheimer’s Center, Vanderbilt University Medical Center Nashville TN USA
| | - Logan Dumitrescu
- Vanderbilt Memory and Alzheimer’s Center, Vanderbilt University Medical Center Nashville TN USA
- Vanderbilt Genetics Institute, Vanderbilt University Medical Center Nashville TN USA
| | - Derek B Archer
- Vanderbilt Memory & Alzheimer’s Center, Vanderbilt University Medical Center Nashville TN USA
- Vanderbilt Genetics Institute, Vanderbilt University Medical Center Nashville TN USA
| | - Alexandra N. Smith
- Vanderbilt Memory & Alzheimer’s Center, Vanderbilt University Medical Center Nashville TN USA
| | | | | | | | | | - Emily H. Trittschuh
- Geriatric Research, Education, and Clinical Center, Veterans Affairs Puget Sound Health Care System Seattle WA USA
- Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine Seattle WA USA
| | - Jesse B. Mez
- Boston University School of Medicine Boston MA USA
| | - Emily R. Mahoney
- Vanderbilt Memory & Alzheimer’s Center, Vanderbilt University Medical Center Nashville TN USA
- Vanderbilt Genetics Institute, Vanderbilt University Medical Center Nashville TN USA
| | - William S. Bush
- Cleveland Institute for Computational Biology, Case Western Reserve University Cleveland OH USA
| | - Corinne D Engelman
- University of Wisconsin School of Medicine and Public Health Madison WI USA
| | - Qiongshi Lu
- University of Wisconsin School of Medicine and Public Health Madison WI USA
| | - David W. Fardo
- College of Public Health, University of Kentucky Lexington KY USA
- Sanders‐Brown Center on Aging, University of Kentucky Lexington KY USA
| | | | - Rachel F. Buckley
- Center for Alzheimer’s Research and Treatment, Department of Neurology, Brigham and Women’s Hospital, Harvard Medical School Boston MA USA
- Melbourne School of Psychological Sciences, University of Melbourne Melbourne VIC Australia
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School Boston MA USA
| | - Elizabeth C. Mormino
- Department of Neurology and Neurological Sciences, Stanford University Stanford CA USA
| | | | | | - Lindsay R. Clark
- University of Wisconsin School of Medicine and Public Health Madison WI USA
| | - Katherine A. Gifford
- Vanderbilt Memory & Alzheimer’s Center, Vanderbilt University Medical Center Nashville TN USA
| | - Badri N. Vardarajan
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University, New York Presbyterian Hospital New York NY USA
- The Taub Institute for Research on Alzheimer’s Disease and The Aging Brain, Columbia University New York NY USA
- The Institute for Genomic Medicine, Columbia University Medical Center and The New York Presbyterian Hospital New York NY USA
- Department of Neurology, Columbia University New York NY USA
| | - Michael L. Cuccaro
- Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine Miami FL USA
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami Miami FL USA
| | - Margaret A. Pericak‐Vance
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine Miami FL USA
| | - Lindsay A. Farrer
- Department of Neurology, Boston University School of Medicine Boston MA USA
- Department of Biostatistics, Boston University School of Public Health Boston MA USA
- Department of Medicine (Biomedical Genetics), Boston University School of Medicine Boston MA USA
| | - Li‐San Wang
- Penn Neurodegeneration Genomics Center, Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine Philadelphia PA USA
| | - Gerard D. Schellenberg
- Penn Neurodegeneration Genomics Center, Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania Philadelphia PA USA
| | - Jonathan L. Haines
- Cleveland Institute for Computational Biology, Case Western Reserve University Cleveland OH USA
| | - Angela L. Jefferson
- Vanderbilt Memory & Alzheimer’s Center, Vanderbilt University Medical Center Nashville TN USA
| | | | | | - Marilyn S. Albert
- Department of Neurology, Division of Cognitive Neuroscience, John’s Hopkins University School of Medicine Baltimore MD USA
| | - C Dirk Keene
- Department of Laboratory Medicine and Pathology, University of Washington Seattle WA USA
| | - Andrew J. Saykin
- Department of Radiology and Imaging Services, Indiana University School of Medicine Indianapolis IN USA
| | - Eric B Larson
- University of Washington Seattle WA USA
- Kaiser Permanente Washington Health Research Institute Seattle WA USA
| | - Reisa A. Sperling
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School Boston MA USA
| | - Richard Mayeux
- The Taub Institute for Research on Alzheimer’s Disease and The Aging Brain, Columbia University New York NY USA
- The Institute for Genomic Medicine, Columbia University Medical Center and The New York Presbyterian Hospital New York NY USA
- Columbia University, Departments of Neurology, Psychiatry, and Epidemiology, Gertrude H. Sergievsky Center, The Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, College of Physicians and Surgeons New York NY USA
| | - Alison Goate
- Ronald M. Loeb Center for Alzheimer’s Disease, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai New York NY USA
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai New York NY USA
| | - Sarah Neuner
- Ronald M. Loeb Center for Alzheimer’s Disease, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai New York NY USA
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai New York NY USA
| | - Alan E. Renton
- Ronald M. Loeb Center for Alzheimer’s Disease, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai New York NY USA
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai New York NY USA
| | - Edoardo Marcora
- Ronald M. Loeb Center for Alzheimer’s Disease, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai New York NY USA
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai New York NY USA
| | - Brian Fulton‐Howard
- Ronald M. Loeb Center for Alzheimer’s Disease, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai New York NY USA
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai New York NY USA
| | - Tulsi Patel
- Ronald M. Loeb Center for Alzheimer’s Disease, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai New York NY USA
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai New York NY USA
| | - David A Bennett
- Rush Alzheimer’s Disease Center, Rush University Medical Center Chicago IL USA
| | - Julie A Schneider
- Rush Alzheimer’s Disease Center, Rush University Medical Center Chicago IL USA
| | | | - Timothy J. Hohman
- Vanderbilt Memory & Alzheimer’s Center, Vanderbilt University Medical Center Nashville TN USA
- Vanderbilt Genetics Institute, Vanderbilt University Medical Center Nashville TN USA
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Landau SM, Lee JQ, Murphy A, Ward TJ, Harrison TM, Baker SL, Jagust WJ. Tau heterogeneity in Aβ positive patients. Alzheimers Dement 2022. [DOI: 10.1002/alz.063765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | | | - Alice Murphy
- University of California Berkeley Berkeley CA USA
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Jung Y, Hong SY, Kim D, Vemuri P, Borowski BJ, Jack CR, Koeppe RA, Lockhart SN, Harrison TM, Gordineer L, Woolard N, Espeland MA, Harvey DJ, Lovato L, Toga AW, Masdeu JC, Oh H, Gitelman DR, Aggarwal NT, Carrillo MC, Snyder HM, Whitmer RA, Baker LD, DeCarli CS, Landau SM. Choice of Inversion Time for Arterial Spin Labeling MRI in the U.S. POINTER Lifestyle Intervention Trial. Alzheimers Dement 2022. [DOI: 10.1002/alz.067351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Laura Lovato
- Wake Forest School of Medicine Winston‐Salem NC USA
| | - Arthur W. Toga
- Stevens Neuroimaging and Informatics Institute, University of Southern California Los Angeles CA USA
| | | | - Hwamee Oh
- Alpert Medical School of Brown University Providence RI USA
| | | | - Neelum T. Aggarwal
- Rush Alzheimer’s Disease Center, Department of Neurological Sciences Chicago IL USA
| | | | | | | | - Laura D. Baker
- Wake Forest University School of Medicine Winston‐Salem NC USA
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Dominguez PA, Ward TJ, Harrison TM, Landau SM, Lopresti BJ, Minhas DS, Klunk WE, Jagust WJ, Baker SL. Evaluation of PVC methods on head‐to‐head FTP and MK6240. Alzheimers Dement 2022. [DOI: 10.1002/alz.066037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Parent JH, Ciampa CJ, Harrison TM, Adams JN, Zhuang K, Betts MJ, Maass A, Winer JR, Jagust WJ, Berry AS. Locus coeruleus catecholamines link neuroticism and vulnerability to tau pathology in aging. Neuroimage 2022; 263:119658. [PMID: 36191755 PMCID: PMC10060440 DOI: 10.1016/j.neuroimage.2022.119658] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 09/19/2022] [Accepted: 09/29/2022] [Indexed: 11/19/2022] Open
Abstract
Higher neuroticism is a risk factor for Alzheimer's disease (AD), and is implicated in disordered stress responses. The locus coeruleus (LC)-catecholamine system is activated during perceived threat and is a centerpiece of developing models of the pathophysiology of AD, as it is the first brain region to develop abnormal tau. We examined relationships among the "Big 5" personality traits, LC catecholamine synthesis capacity measured with [18F]Fluoro-m-tyrosine PET, and tau burden measured with [18F]Flortaucipir PET in cognitively normal older adults (n = 47). β-amyloid (Aβ) status was determined using [11C]Pittsburgh compound B PET (n = 14 Aβ positive). Lower LC catecholamine synthesis capacity was associated with higher neuroticism, more depressive symptoms as measured by the Geriatric Depression Scale, and higher amygdala tau-PET binding. Exploratory analyses with other personality traits revealed that low trait conscientiousness was also related to both lower LC catecholamine synthesis capacity, and more depressive symptoms. A significant indirect path linked both high neuroticism and low conscientiousness to greater amygdala tau burden via their mutual association with low LC catecholamine synthesis capacity. Together, these findings reveal LC catecholamine synthesis capacity to be a promising marker of affective health and pathology burden in aging, and identifies candidate neurobiological mechanisms for the effect of personality on increased vulnerability to dementia.
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Affiliation(s)
- Jourdan H. Parent
- Department of Psychology, Brandeis University, Waltham, MA, 02453, USA
| | - Claire J. Ciampa
- Department of Psychology, Brandeis University, Waltham, MA, 02453, USA
| | - Theresa M. Harrison
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Jenna N. Adams
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Kailin Zhuang
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Matthew J. Betts
- Institute of Cognitive Neurology and Dementia Research, Otto von Guericke University, Magdeburg, 39106, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen, Magdeburg 39120, Germany
- Center for Behavioral Brain Sciences, University of Magdeburg, Magdeburg, Germany
| | - Anne Maass
- Deutsches Zentrum für Neurodegenerative Erkrankungen, Magdeburg 39120, Germany
| | - Joseph R. Winer
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - William J. Jagust
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Anne S. Berry
- Department of Psychology, Brandeis University, Waltham, MA, 02453, USA
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
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Eissman JM, Dumitrescu L, Mahoney ER, Smith AN, Mukherjee S, Lee ML, Scollard P, Choi SE, Bush WS, Engelman CD, Lu Q, Fardo DW, Trittschuh EH, Mez J, Kaczorowski CC, Hernandez Saucedo H, Widaman KF, Buckley RF, Properzi MJ, Mormino EC, Yang HS, Harrison TM, Hedden T, Nho K, Andrews SJ, Tommet D, Hadad N, Sanders RE, Ruderfer DM, Gifford KA, Zhong X, Raghavan NS, Vardarajan BN, Pericak-Vance MA, Farrer LA, Wang LS, Cruchaga C, Schellenberg GD, Cox NJ, Haines JL, Keene CD, Saykin AJ, Larson EB, Sperling RA, Mayeux R, Cuccaro ML, Bennett DA, Schneider JA, Crane PK, Jefferson AL, Hohman TJ. Sex differences in the genetic architecture of cognitive resilience to Alzheimer's disease. Brain 2022; 145:2541-2554. [PMID: 35552371 PMCID: PMC9337804 DOI: 10.1093/brain/awac177] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 04/07/2022] [Accepted: 04/14/2022] [Indexed: 12/04/2022] Open
Abstract
Approximately 30% of elderly adults are cognitively unimpaired at time of death despite the presence of Alzheimer's disease neuropathology at autopsy. Studying individuals who are resilient to the cognitive consequences of Alzheimer's disease neuropathology may uncover novel therapeutic targets to treat Alzheimer's disease. It is well established that there are sex differences in response to Alzheimer's disease pathology, and growing evidence suggests that genetic factors may contribute to these differences. Taken together, we sought to elucidate sex-specific genetic drivers of resilience. We extended our recent large scale genomic analysis of resilience in which we harmonized cognitive data across four cohorts of cognitive ageing, in vivo amyloid PET across two cohorts, and autopsy measures of amyloid neuritic plaque burden across two cohorts. These data were leveraged to build robust, continuous resilience phenotypes. With these phenotypes, we performed sex-stratified [n (males) = 2093, n (females) = 2931] and sex-interaction [n (both sexes) = 5024] genome-wide association studies (GWAS), gene and pathway-based tests, and genetic correlation analyses to clarify the variants, genes and molecular pathways that relate to resilience in a sex-specific manner. Estimated among cognitively normal individuals of both sexes, resilience was 20-25% heritable, and when estimated in either sex among cognitively normal individuals, resilience was 15-44% heritable. In our GWAS, we identified a female-specific locus on chromosome 10 [rs827389, β (females) = 0.08, P (females) = 5.76 × 10-09, β (males) = -0.01, P(males) = 0.70, β (interaction) = 0.09, P (interaction) = 1.01 × 10-04] in which the minor allele was associated with higher resilience scores among females. This locus is located within chromatin loops that interact with promoters of genes involved in RNA processing, including GATA3. Finally, our genetic correlation analyses revealed shared genetic architecture between resilience phenotypes and other complex traits, including a female-specific association with frontotemporal dementia and male-specific associations with heart rate variability traits. We also observed opposing associations between sexes for multiple sclerosis, such that more resilient females had a lower genetic susceptibility to multiple sclerosis, and more resilient males had a higher genetic susceptibility to multiple sclerosis. Overall, we identified sex differences in the genetic architecture of resilience, identified a female-specific resilience locus and highlighted numerous sex-specific molecular pathways that may underly resilience to Alzheimer's disease pathology. This study illustrates the need to conduct sex-aware genomic analyses to identify novel targets that are unidentified in sex-agnostic models. Our findings support the theory that the most successful treatment for an individual with Alzheimer's disease may be personalized based on their biological sex and genetic context.
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Affiliation(s)
- Jaclyn M Eissman
- Vanderbilt Memory and Alzheimer's Center, Vanderbilt University Medical
Center, Nashville, TN, USA
- Vanderbilt Genetics Institute, Vanderbilt University Medical
Center, Nashville, TN, USA
| | - Logan Dumitrescu
- Vanderbilt Memory and Alzheimer's Center, Vanderbilt University Medical
Center, Nashville, TN, USA
- Vanderbilt Genetics Institute, Vanderbilt University Medical
Center, Nashville, TN, USA
| | - Emily R Mahoney
- Vanderbilt Memory and Alzheimer's Center, Vanderbilt University Medical
Center, Nashville, TN, USA
- Vanderbilt Genetics Institute, Vanderbilt University Medical
Center, Nashville, TN, USA
| | - Alexandra N Smith
- Vanderbilt Memory and Alzheimer's Center, Vanderbilt University Medical
Center, Nashville, TN, USA
- Vanderbilt Genetics Institute, Vanderbilt University Medical
Center, Nashville, TN, USA
| | | | - Michael L Lee
- Department of Medicine, University of Washington,
Seattle, WA, USA
| | - Phoebe Scollard
- Department of Medicine, University of Washington,
Seattle, WA, USA
| | - Seo Eun Choi
- Department of Medicine, University of Washington,
Seattle, WA, USA
| | - William S Bush
- Cleveland Institute for Computational Biology, Department of Population and
Quantitative Health Sciences, Case Western Reserve University,
Cleveland, OH, USA
| | - Corinne D Engelman
- Department of Population Health Sciences, School of Medicine and Public
Health, University of Wisconsin-Madison, Madison,
WI, USA
| | - Qiongshi Lu
- Department of Statistics, University of Wisconsin-Madison,
Madison, WI, USA
- Department of Biostatistics and Medical Informatics, University of
Wisconsin-Madison, Madison, WI, USA
| | - David W Fardo
- Department of Biostatistics, College of Public Health, University of
Kentucky, Lexington, KY, USA
- Sanders-Brown Center on Aging, University of Kentucky,
Lexington, KY, USA
| | - Emily H Trittschuh
- Department of Psychiatry and Behavioral Sciences, University of Washington
School of Medicine, Seattle, WA, USA
- VA Puget Sound Health Care System, GRECC, Seattle,
WA, USA
| | - Jesse Mez
- Department of Neurology, Boston University School of
Medicine, Boston, MA, USA
| | | | - Hector Hernandez Saucedo
- UC Davis Alzheimer's Disease Research Center, Department of Neurology,
University of California Davis Medical Center, Sacramento,
CA, USA
| | | | - Rachel F Buckley
- Department of Neurology, Massachusetts General Hospital/Harvard Medical
School, Boston, MA, USA
- Center for Alzheimer's Research and Treatment, Department of Neurology,
Brigham and Women’s Hospital/Harvard Medical School, Boston,
MA, USA
- Melbourne School of Psychological Sciences, University of
Melbourne, Melbourne, Australia
| | - Michael J Properzi
- Department of Neurology, Massachusetts General Hospital/Harvard Medical
School, Boston, MA, USA
| | - Elizabeth C Mormino
- Department of Neurology and Neurological Sciences, Stanford
University, Stanford, CA, USA
| | - Hyun Sik Yang
- Department of Neurology, Massachusetts General Hospital/Harvard Medical
School, Boston, MA, USA
- Center for Alzheimer's Research and Treatment, Department of Neurology,
Brigham and Women’s Hospital/Harvard Medical School, Boston,
MA, USA
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California
Berkeley, Berkeley, CA, USA
| | - Trey Hedden
- Icahn School of Medicine at Mount Sinai, New York
City, NY, USA
| | - Kwangsik Nho
- Department of Radiology and Imaging Sciences, Indiana Alzheimer Disease
Center, Indiana University School of Medicine, Indianapolis,
IN, USA
- Center for Computational Biology and Bioinformatics, Indiana University
School of Medicine, Indianapolis, IN, USA
| | - Shea J Andrews
- Icahn School of Medicine at Mount Sinai, New York
City, NY, USA
| | - Douglas Tommet
- Department of Psychiatry and Human Behavior, Brown University School of
Medicine, Providence, RI, USA
| | | | | | - Douglas M Ruderfer
- Vanderbilt Genetics Institute, Vanderbilt University Medical
Center, Nashville, TN, USA
| | - Katherine A Gifford
- Vanderbilt Memory and Alzheimer's Center, Vanderbilt University Medical
Center, Nashville, TN, USA
| | - Xiaoyuan Zhong
- Department of Statistics, University of Wisconsin-Madison,
Madison, WI, USA
- Department of Biostatistics and Medical Informatics, University of
Wisconsin-Madison, Madison, WI, USA
| | - Neha S Raghavan
- Department of Neurology, Columbia University, New
York, NY, USA
- The Taub Institute for Research on Alzheimer's Disease and The Aging Brain,
Columbia University, New York, NY, USA
- The Institute for Genomic Medicine, Columbia University Medical Center and
The New York Presbyterian Hospital, New York, NY,
USA
| | - Badri N Vardarajan
- Department of Neurology, Columbia University, New
York, NY, USA
- The Taub Institute for Research on Alzheimer's Disease and The Aging Brain,
Columbia University, New York, NY, USA
- The Institute for Genomic Medicine, Columbia University Medical Center and
The New York Presbyterian Hospital, New York, NY,
USA
| | | | | | | | - Margaret A Pericak-Vance
- John P. Hussman Institute for Human Genomics, University of Miami School of
Medicine, Miami, FL, USA
| | - Lindsay A Farrer
- Department of Neurology, Boston University School of
Medicine, Boston, MA, USA
- Department of Biostatistics, Boston University School of Public
Health, Boston, MA, USA
- Department of Medicine (Biomedical Genetics), Boston University School of
Medicine, Boston, MA, USA
| | - Li San Wang
- Penn Neurodegeneration Genomics Center, Department of Pathology and
Laboratory Medicine, University of Pennsylvania Perelman School of
Medicine, Philadelphia, PA, USA
| | - Carlos Cruchaga
- Department of Psychiatry, Washington University School of
Medicine, St. Louis, MO, USA
| | - Gerard D Schellenberg
- Penn Neurodegeneration Genomics Center, Department of Pathology and
Laboratory Medicine, University of Pennsylvania Perelman School of
Medicine, Philadelphia, PA, USA
| | - Nancy J Cox
- Vanderbilt Genetics Institute, Vanderbilt University Medical
Center, Nashville, TN, USA
| | - Jonathan L Haines
- Cleveland Institute for Computational Biology, Department of Population and
Quantitative Health Sciences, Case Western Reserve University,
Cleveland, OH, USA
| | - C Dirk Keene
- Department of Pathology, University of Washington,
Seattle, WA, USA
| | - Andrew J Saykin
- Department of Radiology and Imaging Sciences, Indiana University School of
Medicine, Indianapolis, IN, USA
| | - Eric B Larson
- Department of Medicine, University of Washington,
Seattle, WA, USA
- Kaiser Permanente Washington Health Research Institute,
Seattle, WA, USA
| | - Reisa A Sperling
- Department of Neurology, Massachusetts General Hospital/Harvard Medical
School, Boston, MA, USA
| | - Richard Mayeux
- Department of Neurology, Columbia University, New
York, NY, USA
- The Taub Institute for Research on Alzheimer's Disease and The Aging Brain,
Columbia University, New York, NY, USA
- The Institute for Genomic Medicine, Columbia University Medical Center and
The New York Presbyterian Hospital, New York, NY,
USA
| | - Michael L Cuccaro
- John P. Hussman Institute for Human Genomics, University of Miami School of
Medicine, Miami, FL, USA
| | - David A Bennett
- Rush Alzheimer's Disease Center, Rush University Medical
Center, Chicago, IL, USA
| | - Julie A Schneider
- Rush Alzheimer's Disease Center, Rush University Medical
Center, Chicago, IL, USA
| | - Paul K Crane
- Department of Medicine, University of Washington,
Seattle, WA, USA
| | - Angela L Jefferson
- Vanderbilt Memory and Alzheimer's Center, Vanderbilt University Medical
Center, Nashville, TN, USA
| | - Timothy J Hohman
- Vanderbilt Memory and Alzheimer's Center, Vanderbilt University Medical
Center, Nashville, TN, USA
- Vanderbilt Genetics Institute, Vanderbilt University Medical
Center, Nashville, TN, USA
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26
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LaPoint MR, Baker SL, Landau SM, Harrison TM, Jagust WJ. Rates of β-amyloid deposition indicate widespread simultaneous accumulation throughout the brain. Neurobiol Aging 2022; 115:1-11. [PMID: 35447369 PMCID: PMC9986974 DOI: 10.1016/j.neurobiolaging.2022.03.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 02/10/2022] [Accepted: 03/07/2022] [Indexed: 11/18/2022]
Abstract
Amyloid plaque aggregation is a pathologic hallmark of Alzheimer's disease (AD) that occurs early in the disease. However, little is known about its progression throughout the brain. Using Pittsburgh Compound B (PIB)-PET imaging, we investigated the progression of regional amyloid accumulation in cognitively normal older adults. We found that all examined regions reached their peak accumulation rates 24-28 years after an estimated initiation corresponding to the mean baseline PIB-PET signal in amyloid-negative older adults. We also investigated the effect of increased genetic risk conferred by the apolipoprotein-E ɛ4 allele on rates of amyloid accumulation, as well as the relationship between regional amyloid accumulation and regional tau pathology, another hallmark of AD, measured with Flortaucipir-PET. Carriers of the ɛ4 allele had faster amyloid accumulation in all brain regions. Furthermore, in all regions excluding the temporal lobe, faster amyloid accumulation was associated with greater tau burden. These results indicate that amyloid accumulates near-simultaneously throughout the brain and is associated with higher AD pathology, and that genetic risk of AD is associated with faster amyloid accumulation.
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Affiliation(s)
- Molly R LaPoint
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA 94720, USA.
| | - Suzanne L Baker
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, CA 94720, USA
| | - Susan M Landau
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA 94720, USA; Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, CA 94720, USA
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA 94720, USA
| | - William J Jagust
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA 94720, USA; Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, CA 94720, USA
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27
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Ciampa CJ, Parent JH, Harrison TM, Fain RM, Betts MJ, Maass A, Winer JR, Baker SL, Janabi M, Furman DJ, D'Esposito M, Jagust WJ, Berry AS. Associations among locus coeruleus catecholamines, tau pathology, and memory in aging. Neuropsychopharmacology 2022; 47:1106-1113. [PMID: 35034099 PMCID: PMC8938463 DOI: 10.1038/s41386-022-01269-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/16/2021] [Accepted: 01/04/2022] [Indexed: 12/20/2022]
Abstract
The locus coeruleus (LC) is the brain's major source of the neuromodulator norepinephrine, and is also profoundly vulnerable to the development of Alzheimer's disease (AD)-related tau pathology. Norepinephrine plays a role in neuroprotective functions that may reduce AD progression, and also underlies optimal memory performance. Successful maintenance of LC neurochemical function represents a candidate mechanism of protection against the propagation of AD-related pathology and may facilitate the preservation of memory performance despite pathology. Using [18F]Fluoro-m-tyrosine ([18F]FMT) PET imaging to measure catecholamine synthesis capacity in LC regions of interest, we examined relationships among LC neurochemical function, AD-related pathology, and memory performance in cognitively normal older adults (n = 49). Participants underwent [11C]Pittsburgh compound B and [18F]Flortaucipir PET to quantify β-amyloid (n = 49) and tau burden (n = 42) respectively. In individuals with substantial β-amyloid, higher LC [18F]FMT net tracer influx (Kivis) was associated with lower temporal tau. Longitudinal tau-PET analyses in a subset of our sample (n = 30) support these findings to reveal reduced temporal tau accumulation in the context of higher LC [18F]FMT Kivis. Higher LC catecholamine synthesis capacity was positively correlated with self-reported cognitive engagement and physical activity across the lifespan, established predictors of successful aging measured with the Lifetime Experiences Questionnaire. LC catecholamine synthesis capacity moderated tau's negative effect on memory, such that higher LC catecholamine synthesis capacity was associated with better-than-expected memory performance given an individual's tau burden. These PET findings provide insight into the neurochemical mechanisms of AD vulnerability and cognitive resilience in the living human brain.
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Affiliation(s)
- Claire J Ciampa
- Department of Psychology, Brandeis University, Waltham, MA, 02453, USA
| | - Jourdan H Parent
- Department of Psychology, Brandeis University, Waltham, MA, 02453, USA
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Rebekah M Fain
- Department of Psychology, Brandeis University, Waltham, MA, 02453, USA
| | - Matthew J Betts
- Institute of Cognitive Neurology and Dementia Research, Otto von Guericke University, Magdeburg, 39106, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen, Magdeburg, 39120, Germany
- Center for Behavioral Brain Sciences, University of Magdeburg, Magdeburg, Germany
| | - Anne Maass
- Deutsches Zentrum für Neurodegenerative Erkrankungen, Magdeburg, 39120, Germany
| | - Joseph R Winer
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Suzanne L Baker
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Mustafa Janabi
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Daniella J Furman
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
- University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Mark D'Esposito
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - William J Jagust
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Anne S Berry
- Department of Psychology, Brandeis University, Waltham, MA, 02453, USA.
- Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
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28
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Harrison TM, Vemuri P, Koeppe RA, Lockhart SN, Jung Y, Borowski BJ, Murphy A, Ward T, Gordineer L, Woolard N, Espeland MA, Harvey DJ, Jagust WJ, Lovato L, Toga AW, Masdeu JC, Oh H, Gitelman DR, Aggarwal NT, Carrillo MC, Snyder HM, Whitmer RA, Baker LD, DeCarli CS, Landau SM. Cross‐sectional amyloid and tau PET in cognitively normal older adults enrolled in the U.S. POINTER lifestyle intervention trial. Alzheimers Dement 2021. [DOI: 10.1002/alz.055306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Theresa M. Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley Berkeley CA USA
| | | | | | | | | | | | - Alice Murphy
- University of California Berkeley Berkeley CA USA
| | - Tyler Ward
- University of California Berkeley Berkeley CA USA
| | | | | | | | | | - William J. Jagust
- University of California Berkeley Berkeley CA USA
- Lawrence Berkeley National Laboratory Berkeley CA USA
| | - Laura Lovato
- Wake Forest School of Medicine Winston‐Salem NC USA
| | | | | | - Hwamee Oh
- Alpert Medical School of Brown University Providence RI USA
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29
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Dobyns L, Zhuang K, Baker SL, Jagust WJ, Harrison TM. A global resilience score captures associations with AD pathology and predicts cognitive decline in cognitively healthy older adults. Alzheimers Dement 2021. [DOI: 10.1002/alz.052302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | - Theresa M. Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley Berkeley CA USA
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30
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Cassady K, Adams JN, Chen X, Maass A, Harrison TM, Ziontz J, Baker SL, Jagust WJ. Effect of Alzheimer’s pathology on the functional architecture of memory networks during rest and task states in aging. Alzheimers Dement 2021. [DOI: 10.1002/alz.052380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | - Xi Chen
- University of California Berkeley Berkeley CA USA
| | | | - Theresa M. Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley Berkeley CA USA
| | - Jacob Ziontz
- University of California, Berkeley Berkeley CA USA
| | | | - William J. Jagust
- University of California Berkeley Berkeley CA USA
- Lawrence Berkeley National Laboratory Berkeley CA USA
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31
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Adams JN, Harrison TM, Maass A, Baker SL, Jagust WJ. Longitudinal tau accumulation in cognitively normal older adults is associated with baseline age, pathology, and activation. Alzheimers Dement 2021. [DOI: 10.1002/alz.050548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Theresa M. Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley Berkeley CA USA
| | - Anne Maass
- University of California Berkeley Berkeley CA USA
- German Center for Neurodegenerative Diseases (DZNE) Magdeburg Germany
| | | | - William J. Jagust
- Lawrence Berkeley National Laboratory Berkeley CA USA
- University of California Berkeley Berkeley CA USA
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32
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Tennant VR, Harrison TM, Adams JN, La Joie R, Winer JR, Jagust WJ. Fusiform Gyrus Phospho-Tau is Associated with Failure of Proper Name Retrieval in Aging. Ann Neurol 2021; 90:988-993. [PMID: 34590340 DOI: 10.1002/ana.26237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 09/01/2021] [Accepted: 09/26/2021] [Indexed: 11/06/2022]
Abstract
Difficulty retrieving proper names is common in older adults, coinciding with the accumulation of aggregated proteins in mid-life. We investigated the ability of healthy older adults to retrieve the names of famous faces in relation to positron emission tomography measurements of amyloid-β plaques and tau neurofibrillary tangles. More tau in the left fusiform and parahippocampal gyrus was related to reduced proper name retrieval performance and this effect was potentiated by amyloid-β. These findings provide an explanation for a common complaint of older adults and link proper name retrieval to neural systems involved in face perception, memory, and naming. ANN NEUROL 2021;90:988-993.
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Affiliation(s)
- Victoria R Tennant
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA
| | - Jenna N Adams
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA
| | - Renaud La Joie
- Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA
| | - Joseph R Winer
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA
| | - William J Jagust
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA.,Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA
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33
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Winer JR, Morehouse A, Fenton L, Harrison TM, Ayangma L, Reed M, Kumar S, Baker SL, Jagust WJ, Walker MP. Tau and β-Amyloid Burden Predict Actigraphy-Measured and Self-Reported Impairment and Misperception of Human Sleep. J Neurosci 2021; 41:7687-7696. [PMID: 34290080 PMCID: PMC8425979 DOI: 10.1523/jneurosci.0353-21.2021] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 05/23/2021] [Accepted: 06/30/2021] [Indexed: 11/21/2022] Open
Abstract
Alzheimer's disease is associated with poor sleep, but the impact of tau and β-amyloid (Aβ) pathology on sleep remains largely unknown. Here, we test the hypothesis that tau and Aβ predict unique impairments in objective and self-perceived human sleep under real-life, free-living conditions. Eighty-nine male and female cognitively healthy older adults received 18F-FTP-tau and 11C-PIB-Aβ PET imaging, 7 nights of sleep actigraphy and questionnaire measures, and neurocognitive assessment. Tau burden, but not Aβ, was associated with markedly worse objective sleep. In contrast, Aβ and tau were associated with worse self-reported sleep quality. Of clinical relevance, Aβ burden predicted a unique perceptual mismatch between objective and subject sleep evaluation, with individuals underestimating their sleep. The magnitude of this mismatch was further predicted by worse executive function. Thus, early-stage tau and Aβ deposition are linked with distinct phenotypes of real-world sleep impairment, one that includes a cognitive misperception of their own sleep health.SIGNIFICANCE STATEMENT Alzheimer's disease is associated with sleep disruption, often before significant memory decline. Thus, real-life patterns of sleep behavior have the potential to serve as a window into early disease progression. In 89 cognitive healthy older adults, we found that tau burden was associated with worse wristwatch actigraphy-measured sleep quality, and that both tau and β-amyloid were independently predictive of self-reported sleep quality. Furthermore, individuals with greater β-amyloid deposition were more likely to underestimate their sleep quality, and sleep quality underestimation was associated with worse executive function. These data support the role of sleep impairment as a key marker of early Alzheimer's disease, and offer the possibility that actigraphy may be an affordable and scalable tool in quantifying Alzheimer's disease-related behavioral changes.
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Affiliation(s)
- Joseph R Winer
- Center for Human Sleep Science, Department of Psychology, University of California Berkeley, Berkeley, California 94720
| | - Allison Morehouse
- Center for Human Sleep Science, Department of Psychology, University of California Berkeley, Berkeley, California 94720
| | - Laura Fenton
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
| | - Lylian Ayangma
- Center for Human Sleep Science, Department of Psychology, University of California Berkeley, Berkeley, California 94720
| | - Mark Reed
- Center for Human Sleep Science, Department of Psychology, University of California Berkeley, Berkeley, California 94720
| | - Samika Kumar
- Center for Human Sleep Science, Department of Psychology, University of California Berkeley, Berkeley, California 94720
| | - Suzanne L Baker
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - William J Jagust
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Matthew P Walker
- Center for Human Sleep Science, Department of Psychology, University of California Berkeley, Berkeley, California 94720
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
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34
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Young CB, Landau SM, Harrison TM, Poston KL, Mormino EC. Influence of common reference regions on regional tau patterns in cross-sectional and longitudinal [ 18F]-AV-1451 PET data. Neuroimage 2021; 243:118553. [PMID: 34487825 PMCID: PMC8785682 DOI: 10.1016/j.neuroimage.2021.118553] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/06/2021] [Accepted: 09/02/2021] [Indexed: 10/30/2022] Open
Abstract
Tau PET has allowed for critical insights into in vivo patterns of tau accumulation and change in individuals early in the Alzheimer's disease (AD) continuum. A key methodological step in tau PET analyses is the selection of a reference region, but there is not yet consensus on the optimal region especially for longitudinal tau PET analyses. This study examines how reference region selection influences results related to disease stage at baseline and over time. Longitudinal flortaucipir ([18F]-AV1451) PET scans were examined using several common reference regions (e.g., eroded subcortical white matter, inferior cerebellar gray matter) in 62 clinically unimpaired amyloid negative (CU A-) individuals, 73 CU amyloid positive (CU A+) individuals, and 64 amyloid positive individuals with mild cognitive impairment (MCI A+) from the Alzheimer's Disease Neuroimaging Initiative (ADNI). Cross-sectionally, both reference regions resulted in robust group differences between CU A-, CU A+, and MCI A+ groups, along with significant associations with CSF phosphorylated tau (pTau-181). However, these results were more focally specific and akin to Braak Staging when using eroded white matter, whereas effects with inferior cerebellum were globally distributed across most cortical regions. Longitudinally, utilization of eroded white matter revealed significant accumulation greater than zero across more regions whereas change over time was diminished using inferior cerebellum. Interestingly, the inferior temporal target region seemed most robust to reference region selection with expected cross-sectional and longitudinal signal across both reference regions. With few exceptions, baseline tau did not significantly predict longitudinal change in tau in the same region regardless of reference region. In summary, reference region selection deserves further evaluation as this methodological step may lead to disparate findings. Inferior cerebellar gray matter may be more sensitive to cross-sectional flortaucipir differences, whereas eroded subcortical white matter may be more sensitive for longitudinal analyses examining regional patterns of change.
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Affiliation(s)
- Christina B Young
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA United States.
| | - Susan M Landau
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA United States
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA United States
| | - Kathleen L Poston
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA United States
| | - Elizabeth C Mormino
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA United States
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Cassady KE, Adams JN, Chen X, Maass A, Harrison TM, Landau S, Baker S, Jagust W. Alzheimer's Pathology Is Associated with Dedifferentiation of Intrinsic Functional Memory Networks in Aging. Cereb Cortex 2021; 31:4781-4793. [PMID: 34037210 PMCID: PMC8408467 DOI: 10.1093/cercor/bhab122] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 04/13/2021] [Accepted: 04/14/2021] [Indexed: 11/14/2022] Open
Abstract
In presymptomatic Alzheimer's disease (AD), beta-amyloid plaques (Aβ) and tau tangles accumulate in distinct spatiotemporal patterns within the brain, tracking closely with episodic memory decline. Here, we tested whether age-related changes in the segregation of the brain's intrinsic functional episodic memory networks-anterior-temporal (AT) and posterior-medial (PM) networks-are associated with the accumulation of Aβ, tau, and memory decline using fMRI and PET. We found that AT and PM networks were less segregated in older than that in younger adults and this reduced specialization was associated with more tau and Aβ in the same regions. The effect of network dedifferentiation on memory depended on the amount of Aβ and tau, with low segregation and pathology associated with better performance at baseline and low segregation and high pathology related to worse performance over time. This pattern suggests a compensation phase followed by a degenerative phase in the early, preclinical phase of AD.
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Affiliation(s)
- Kaitlin E Cassady
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA 94720, USA
| | - Jenna N Adams
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA 94720, USA
| | - Xi Chen
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA 94720, USA
| | - Anne Maass
- German Center for Neurodegenerative Disease, Magdeburg 39120, Germany
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA 94720, USA
| | - Susan Landau
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA 94720, USA
| | - Suzanne Baker
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - William Jagust
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA 94720, USA
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36
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Affiliation(s)
- Susan M Landau
- Helen Wills Neuroscience Institute, University of California, Berkeley
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37
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Harrison TM, Du R, Klencklen G, Baker SL, Jagust WJ. Distinct effects of beta-amyloid and tau on cortical thickness in cognitively healthy older adults. Alzheimers Dement 2020; 17:1085-1096. [PMID: 33325068 PMCID: PMC8203764 DOI: 10.1002/alz.12249] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 10/22/2020] [Accepted: 11/01/2020] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Published reports of associations between β-amyloid (Aβ) and cortical integrity conflict. Tau biomarkers may help elucidate the complex relationship between pathology and neurodegeneration in aging. METHODS We measured cortical thickness using magnetic resonance imaging, Aβ using Pittsburgh compound B positron emission tomography (PiB-PET), and tau using flortaucipir (FTP)-PET in 125 cognitively normal older adults. We examined relationships among PET measures, cortical thickness, and cognition. RESULTS Cortical thickness was reduced in PiB+/FTP+ participants compared to the PiB+/FTP- and PiB-/FTP- groups. Continuous PiB associations with cortical thickness were weak but positive in FTP- participants and negative in FTP+. FTP strongly negatively predicted thickness regardless of PiB status. FTP was associated with memory and cortical thickness, and mediated the association of PiB with memory. DISCUSSION Past findings linking Aβ and cortical thickness are likely weak due to opposing effects of Aβ on cortical thickness relative to tau burden. Tau, in contrast to Aβ, is strongly related to cortical thickness and memory.
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Affiliation(s)
- Theresa M Harrison
- Helen Wills Neuroscience Institute, UC Berkeley, Berkeley, California, USA
| | - Richard Du
- Helen Wills Neuroscience Institute, UC Berkeley, Berkeley, California, USA
| | - Giuliana Klencklen
- Helen Wills Neuroscience Institute, UC Berkeley, Berkeley, California, USA
| | - Suzanne L Baker
- Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - William J Jagust
- Helen Wills Neuroscience Institute, UC Berkeley, Berkeley, California, USA.,Lawrence Berkeley National Laboratory, Berkeley, California, USA
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Raghavan NS, Dumitrescu L, Mormino EC, Mahoney ER, Lee A, Gao Y, Bilgel M, Goldstein DB, Harrison TM, Engelman CD, Saykin AJ, Whelan C, Liu J, Jagust WJ, Albert MS, Johnson SC, Yang H, Johnson KA, Aisen PS, Resnick SM, Sperling RA, De Jager PL, Schneider JA, Bennett DA, Schrag M, Vardarajan BN, Hohman TJ, Mayeux R. Genetic associations with brain amyloidosis. Alzheimers Dement 2020. [DOI: 10.1002/alz.042191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | | | - Annie Lee
- Columbia University Medical Center New York NY USA
| | - Yizhe Gao
- Columbia University Medical Center New York NY USA
| | - Murat Bilgel
- National Institute on Aging NIH Baltimore MD USA
| | | | | | - Corinne D. Engelman
- Wisconsin Alzheimer’s Disease Research Center University of Wisconsin School of Medicine and Public Health Madison WI USA
| | | | | | | | | | | | - Sterling C. Johnson
- Division of Geriatrics and Gerontology University of Wisconsin‐Madison School of Medicine and Public Health Madison WI USA
| | | | - Keith A. Johnson
- Division of Nuclear Medicine and Molecular Imaging Department of Radiology Massachusetts General Hospital/Harvard Medical School Boston MA USA
| | - Paul S. Aisen
- Alzheimer’s Therapeutic Research Institute University of Southern California San Diego CA USA
| | | | | | | | - Julie A. Schneider
- Rush Alzheimer’s Disease Center Rush University Medical Center Chicago IL USA
| | - David A. Bennett
- Rush Alzheimer’s Disease Center Rush University Medical Center Chicago IL USA
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Adams JN, Maass A, Berron D, Harrison TM, Baker SL, Thomas WP, Stanfill M, Jagust WJ. Medial temporal lobe hyperactivity during memory processing in older adults is associated with entorhinal tau deposition. Alzheimers Dement 2020. [DOI: 10.1002/alz.045507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Anne Maass
- University of California Berkeley Berkeley CA USA
- German Center for Neurodegenerative Diseases (DZNE) Magdeburg Germany
| | - David Berron
- German Center for Neurodegenerative Diseases (DZNE) Magdeburg Germany
- Clinical Memory Research Unit Lund University Lund Sweden
- Institute of Cognitive Neurology and Dementia Research (IKND) Otto‐von‐Guericke University Magdeburg Germany
| | | | | | | | | | - William J. Jagust
- University of California Berkeley Berkeley CA USA
- Lawrence Berkeley National Laboratory Berkeley CA USA
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Cassady K, Adams JN, Maass A, Harrison TM, Baker SL, Jagust WJ. Effect of beta‐amyloid and tau pathology on neural network segregation and episodic memory in aging. Alzheimers Dement 2020. [DOI: 10.1002/alz.045474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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41
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Winer JR, Morehouse A, Fenton LE, Harrison TM, Baker SL, Jagust WJ, Walker MP. Sensitivity of objective and subjective sleep features to tau and Aβ burden in healthy older adults. Alzheimers Dement 2020. [DOI: 10.1002/alz.044950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | | | | | | | | | - Matthew P. Walker
- Helen Wills Neuroscience Institute University of California Berkeley CA USA
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Yoon B, Baker SL, Korman D, Tennant VR, Harrison TM, Landau S, Jagust WJ. Conscientiousness is associated with less amyloid deposition in cognitively normal aging. Psychol Aging 2020; 35:993-999. [PMID: 33166168 DOI: 10.1037/pag0000582] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Little is known about the association between personality and Alzheimer's disease (AD) biomarkers, and existing results are inconsistent. We aimed to determine whether personality was associated with β-amyloid (Aβ) accumulation in cognitively normal aging. One hundred twenty-nine participants were included in this cross-sectional study. Personality was measured with the Big Five Inventory (BFI) and brain Aβ deposition was assessed with [11C] Pittsburgh compound B (PiB)-positron emission tomography (PET) imaging. Conscientiousness scores had a negative association with global PiB distribution volume ratio (DVR) in all participants after adjusting for age, sex, education, and vascular risk factors (β[SE] = -0.19[0.09], 95% confidence interval [CI: -0.35, -0.02], p = .031), while agreeableness, extraversion, neuroticism, and openness had no association with global PiB DVR. Assuming the relative stability of personality traits, these findings suggest that conscientiousness may protect against Aβ accumulation in cognitively normal aging through mechanisms that are as yet unknown. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
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43
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Pereira JB, Harrison TM, La Joie R, Baker SL, Jagust WJ. Spatial patterns of tau deposition are associated with amyloid, ApoE, sex, and cognitive decline in older adults. Eur J Nucl Med Mol Imaging 2020; 47:2155-2164. [PMID: 31915896 PMCID: PMC7338820 DOI: 10.1007/s00259-019-04669-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 12/23/2019] [Indexed: 12/22/2022]
Abstract
Purpose The abnormal deposition of tau begins before the onset of clinical symptoms and seems to target specific brain networks. The aim of this study is to identify the spatial patterns of tau deposition in cognitively normal older adults and assess whether they are related to amyloid-β (Aβ), APOE, sex, and longitudinal cognitive decline. Methods We included 114 older adults with cross-sectional flortaucipir (FTP) and Pittsburgh Compound-B PET in addition to longitudinal cognitive testing. A voxel-wise independent component analysis was applied to FTP images to identify the spatial patterns of tau deposition. We then assessed whether tau within these patterns differed by Aβ status, APOE genotype, and sex. Linear mixed effects models were built to test whether tau in each component predicted cognitive decline. Finally, we ordered the spatial components based on the frequency of high tau deposition to model tau spread. Results We found 10 biologically plausible tau patterns in the whole sample. There was greater tau in medial temporal, occipital, and orbitofrontal components in Aβ-positive compared with Aβ-negative individuals; in the parahippocampal component in ε3ε3 compared with ε2ε3 carriers; and in temporo-parietal and anterior frontal components in women compared with men. Higher tau in temporal and frontal components predicted longitudinal cognitive decline in memory and executive functions, respectively. Tau deposition was most frequently observed in medial temporal and ventral cortical areas, followed by lateral and primary areas. Conclusions These findings suggest that the spatial patterns of tau in asymptomatic individuals are clinically meaningful and are associated with Aβ, APOE ε2ε3, sex and cognitive decline. These patterns could be used to predict the regional spread of tau and perform in vivo tau staging in older adults. Electronic supplementary material The online version of this article (10.1007/s00259-019-04669-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Joana B Pereira
- Division of Clinical Geriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Stockholm, Sweden. .,Clinical Memory Research Unit, Department of Clinical Sciences, Lund University, Malmö, Sweden.
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA, USA
| | - Renaud La Joie
- Memory and Aging Center, University of California, Oakland, CA, USA
| | - Suzanne L Baker
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - William J Jagust
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, CA, USA.,Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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Adams JN, Maass A, Harrison TM, Baker SL, Jagust WJ. Cortical tau deposition follows patterns of entorhinal functional connectivity in aging. eLife 2019; 8:e49132. [PMID: 31475904 PMCID: PMC6764824 DOI: 10.7554/elife.49132] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 08/31/2019] [Indexed: 02/02/2023] Open
Abstract
Tau pathology first appears in the transentorhinal and anterolateral entorhinal cortex (alEC) in the aging brain. The transition to Alzheimer's disease (AD) is hypothesized to involve amyloid-β (Aβ) facilitated tau spread through neural connections. We contrasted functional connectivity (FC) of alEC and posteromedial EC (pmEC), subregions of EC that differ in functional specialization and cortical connectivity, with the hypothesis that alEC-connected cortex would show greater tau deposition than pmEC-connected cortex. We used resting state fMRI to measure FC, and PET to measure tau and Aβ in cognitively normal older adults. Tau preferentially deposited in alEC-connected cortex compared to pmEC-connected or non-connected cortex, and stronger connectivity was associated with increased tau deposition. FC-tau relationships were present regardless of Aβ, although strengthened with Aβ. These results provide an explanation for the anatomic specificity of neocortical tau deposition in the aging brain and reveal relationships between normal aging and the evolution of AD.
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Affiliation(s)
- Jenna N Adams
- Helen Wills Neuroscience Institute, UC BerkeleyBerkeleyUnited States
| | - Anne Maass
- Helen Wills Neuroscience Institute, UC BerkeleyBerkeleyUnited States
- German Center for Neurodegenerative DiseaseMagdeburgGermany
| | | | | | - William J Jagust
- Helen Wills Neuroscience Institute, UC BerkeleyBerkeleyUnited States
- Lawrence Berkeley National LaboratoryBerkeleyUnited States
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45
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Winer JR, Mander BA, Helfrich RF, Maass A, Harrison TM, Baker SL, Knight RT, Jagust WJ, Walker MP. Sleep as a Potential Biomarker of Tau and β-Amyloid Burden in the Human Brain. J Neurosci 2019; 39:6315-6324. [PMID: 31209175 PMCID: PMC6687908 DOI: 10.1523/jneurosci.0503-19.2019] [Citation(s) in RCA: 134] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/13/2019] [Accepted: 05/28/2019] [Indexed: 12/21/2022] Open
Abstract
Recent proposals suggest that sleep may be a factor associated with accumulation of two core pathological features of Alzheimer's disease (AD): tau and β-amyloid (Aβ). Here we combined PET measures of Aβ and tau, electroencephalogram sleep recordings, and retrospective sleep evaluations to investigate the potential utility of sleep measures in predicting in vivo AD pathology in male and female older adults. Regression analyses revealed that the severity of impaired slow oscillation-sleep spindle coupling predicted greater medial temporal lobe tau burden. Aβ burden was not associated with coupling impairment but instead predicted the diminished amplitude of <1 Hz slow-wave-activity, results that were statistically dissociable from each other. Additionally, comparisons of AD pathology and retrospective, self-reported changes in sleep duration demonstrated that changes in sleep across the lifespan can predict late-life Aβ and tau burden. Thus, quantitative and qualitative features of human sleep represent potential noninvasive, cost-effective, and scalable biomarkers (current and future forecasting) of AD pathology, and carry both therapeutic and public health implications.SIGNIFICANCE STATEMENT Several studies have linked sleep disruption to the progression of Alzheimer's disease (AD). Tau and β-amyloid (Aβ), the primary pathological features of AD, are associated with both objective and subjective changes in sleep. However, it remains unknown whether late life tau and Aβ burden are associated with distinct impairments in sleep physiology or changes in sleep across the lifespan. Using polysomnography, retrospective questionnaires, and tau- and Aβ-specific PET, the present study reveals human sleep signatures that dissociably predict levels of brain tau and Aβ in older adults. These results suggest that a night of polysomnography may aid in evaluating tau and Aβ burden, and that treating sleep deficiencies within decade-specific time windows may serve in delaying AD progression.
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Affiliation(s)
- Joseph R Winer
- Center for Human Sleep Science, Department of Psychology, University of California Berkeley, Berkeley, California 94720,
| | - Bryce A Mander
- Center for Human Sleep Science, Department of Psychology, University of California Berkeley, Berkeley, California 94720
- Department of Psychiatry and Human Behavior, University of California Irvine, Orange, California 92697
| | - Randolph F Helfrich
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
| | - Anne Maass
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
- German Center for Neurodegenerative Diseases, Magdeburg 39120, Germany, and
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
| | - Suzanne L Baker
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Robert T Knight
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
| | - William J Jagust
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Matthew P Walker
- Center for Human Sleep Science, Department of Psychology, University of California Berkeley, Berkeley, California 94720,
- Helen Wills Neuroscience Institute, University of California Berkeley, Berkeley, California 94720
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Maass A, Berron D, Harrison TM, Adams JN, La Joie R, Baker S, Mellinger T, Bell RK, Swinnerton K, Inglis B, Rabinovici GD, Düzel E, Jagust WJ. Alzheimer's pathology targets distinct memory networks in the ageing brain. Brain 2019; 142:2492-2509. [PMID: 31199481 PMCID: PMC6658874 DOI: 10.1093/brain/awz154] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 03/13/2019] [Accepted: 04/10/2019] [Indexed: 12/27/2022] Open
Abstract
Alzheimer's disease researchers have been intrigued by the selective regional vulnerability of the brain to amyloid-β plaques and tau neurofibrillary tangles. Post-mortem studies indicate that in ageing and Alzheimer's disease tau tangles deposit early in the transentorhinal cortex, a region located in the anterior-temporal lobe that is critical for object memory. In contrast, amyloid-β pathology seems to target a posterior-medial network that subserves spatial memory. In the current study, we tested whether anterior-temporal and posterior-medial brain regions are selectively vulnerable to tau and amyloid-β deposition in the progression from ageing to Alzheimer's disease and whether this is reflected in domain-specific behavioural deficits and neural dysfunction. 11C-PiB PET and 18F-flortaucipir uptake was quantified in a sample of 131 cognitively normal adults (age: 20-93 years; 47 amyloid-β-positive) and 20 amyloid-β-positive patients with mild cognitive impairment or Alzheimer's disease dementia (65-95 years). Tau burden was relatively higher in anterior-temporal regions in normal ageing and this difference was further pronounced in the presence of amyloid-β and cognitive impairment, indicating exacerbation of ageing-related processes in Alzheimer's disease. In contrast, amyloid-β deposition dominated in posterior-medial regions. A subsample of 50 cognitively normal older (26 amyloid-β-positive) and 25 young adults performed an object and scene memory task while functional MRI data were acquired. Group comparisons showed that tau-positive (n = 18) compared to tau-negative (n = 32) older adults showed lower mnemonic discrimination of object relative to scene images [t(48) = -3.2, P = 0.002]. In a multiple regression model including regional measures of both pathologies, higher anterior-temporal flortaucipir (tau) was related to relatively worse object performance (P = 0.010, r = -0.376), whereas higher posterior-medial PiB (amyloid-β) was related to worse scene performance (P = 0.037, r = 0.309). The functional MRI data revealed that tau burden (but not amyloid-β) was associated with increased task activation in both systems and a loss of functional specificity, or dedifferentiation, in posterior-medial regions. The loss of functional specificity was related to worse memory. Our study shows a regional dissociation of Alzheimer's disease pathologies to distinct memory networks. While our data are cross-sectional, they indicate that with ageing, tau deposits mainly in the anterior-temporal system, which results in deficits in mnemonic object discrimination. As Alzheimer's disease develops, amyloid-β deposits preferentially in posterior-medial regions additionally compromising scene discrimination and anterior-temporal tau deposition worsens further. Finally, our findings propose that the progression of tau pathology is linked to aberrant activation and dedifferentiation of specialized memory networks that is detrimental to memory function.
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Affiliation(s)
- Anne Maass
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA
- German Center for Neurodegenerative Diseases, Magdeburg, 39120, Germany
| | - David Berron
- German Center for Neurodegenerative Diseases, Magdeburg, 39120, Germany
- Institute of Cognitive Neurology and Dementia Research, Otto-von-Guericke University, Magdeburg, 39120, Germany
- Clinical Memory Research Unit, Department of Clinical Sciences Malmö, Lund University, Lund, Sweden
| | - Theresa M Harrison
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Jenna N Adams
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Renaud La Joie
- Memory and Aging Center, University of California, San Francisco, San Francisco, CA, USA
| | - Suzanne Baker
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Lab, Berkeley, 94720, USA
| | - Taylor Mellinger
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA
- Memory and Aging Center, University of California, San Francisco, San Francisco, CA, USA
| | - Rachel K Bell
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Kaitlin Swinnerton
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Ben Inglis
- Henry H. Wheeler, Jr. Brain Imaging Center, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Gil D Rabinovici
- Memory and Aging Center, University of California, San Francisco, San Francisco, CA, USA
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Lab, Berkeley, 94720, USA
| | - Emrah Düzel
- German Center for Neurodegenerative Diseases, Magdeburg, 39120, Germany
- Institute of Cognitive Neurology and Dementia Research, Otto-von-Guericke University, Magdeburg, 39120, Germany
| | - William J Jagust
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA
- Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Lab, Berkeley, 94720, USA
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Harrison TM, Becerra M, Winer JR, Baker SL, Grothe MJ, Jagust WJ. O4-12-02: TAU PATHOLOGY AND COGNITION ARE RELATED TO BASAL FOREBRAIN DEGENERATION IN AGING. Alzheimers Dement 2019. [DOI: 10.1016/j.jalz.2019.06.4807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | - Michel J. Grothe
- German Center for Neurodegenerative Diseases - Rostock/Greifswald; Rostock Germany
| | - William J. Jagust
- Lawrence Berkeley National Laboratory; Berkeley CA USA
- University of California, Berkeley; Berkeley CA USA
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Harrison TM, Adams JN, Maass A, Du R, Baker SL, Jagust WJ. P2-353: SIGNAL COHERENCE IN THE HIPPOCAMPUS IS RELATED TO ITS FUNCTIONAL ISOLATION, PRECLINICAL ALZHEIMER'S DISEASE PATHOLOGY AND MEMORY IN AGING. Alzheimers Dement 2019. [DOI: 10.1016/j.jalz.2019.06.2760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | | | - Anne Maass
- University of California Berkeley; Berkeley CA USA
- German Center for Neurodegenerative Diseases (DZNE); Magdeburg Germany
| | - Richard Du
- University of California Berkeley; Berkeley CA USA
| | | | - William J. Jagust
- Lawrence Berkeley National Laboratory; Berkeley CA USA
- University of California, Berkeley; Berkeley CA USA
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Maass A, Harrison TM, Berron D, Adams JN, La Joie R, Baker SL, Düzel E, Jagust WJ. F4-02-02: TAU PET IMAGING IN AGING: CONTRIBUTIONS TO COGNITIVE DECLINE AND NEURAL DYSFUNCTION. Alzheimers Dement 2019. [DOI: 10.1016/j.jalz.2019.06.4719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Anne Maass
- German Center for Neurodegenerative Diseases; Magdeburg Germany
- University of California Berkeley; Berkeley CA USA
| | | | - David Berron
- German Center for Neurodegenerative Diseases; Magdeburg Germany
- Clinical Memory Research Unit; Lund University; Lund Sweden
| | | | - Renaud La Joie
- University of California San Francisco; San Francisco CA USA
| | | | - Emrah Düzel
- German Center for Neurodegenerative Diseases; Magdeburg Germany
- Institute of Cognitive Neurology and Dementia Research; Otto-von-Guericke University; Magdeburg Germany
| | - William J. Jagust
- Lawrence Berkeley National Laboratory; Berkeley CA USA
- University of California, Berkeley; Berkeley CA USA
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50
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Berry AS, Harrison TM, Whitman A, Swinnerton KN, Tennant VR, Fenton LE, Hsu M, Jagust WJ. P2-423: THE INFLUENCE OF DOPAMINE SYNTHESIS CAPACITY ON REWARD LEARNING AND INCIDENTAL ENCODING IN AGING. Alzheimers Dement 2019. [DOI: 10.1016/j.jalz.2019.06.2830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Anne S. Berry
- E O Lawrence Berkeley National Laboratory; Berkeley CA USA
| | | | - A.J.S. Whitman
- E O Lawrence Berkeley National Laboratory; Berkeley CA USA
| | | | | | | | - Ming Hsu
- Haas School of Business; Berkeley CA USA
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