Cited by 610Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration Mechanisms

Imaging the evolution and pathophysiology of Alzheimer disease

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Jagust, William·2018·Nature Reviews Neuroscience

Abstract

Technologies for imaging the pathophysiology of Alzheimer disease (AD) now permit studies of the relationships between the two major proteins deposited in this disease - amyloid-β (Aβ) and tau - and their effects on measures of neurodegeneration and cognition in humans. Deposition of Aβ in the medial parietal cortex appears to be the first stage in the development of AD, although tau aggregates in the medial temporal lobe (MTL) precede Aβ deposition in cognitively healthy older people. Whether aggregation of tau in the MTL is the first stage in AD or a fairly benign phenomenon that may be transformed and spread in the presence of Aβ is a major unresolved question. Despite a strong link between Aβ and tau, the relationship between Aβ and neurodegeneration is weak; rather, it is tau that is associated with brain atrophy and hypometabolism, which, in turn, are related to cognition. Although there is support for an interaction between Aβ and tau resulting in neurodegeneration that leads to dementia, the unknown nature of this interaction, the strikingly different patterns of brain Aβ and tau deposition and the appearance of neurodegeneration in the absence of Aβ and tau are challenges to this model that ultimately must be explained.

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  • These and other studies strongly support the concept of AD as an amyloid-provoked or facilitated tauopathy, although there is also evidence that both pathologies act in synergy.

    “These and other studies 13,24,133,134 strongly support the concept of AD as being an amyloid-provoked, or facilitated, tauopathy, although there is also evidence that both pathologies act in synergy 135 .”

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Authors
Jagust, W.
Affiliations
Lawrence Berkeley National Laboratory (US)
Corresponding author
Jagust, William
Venue
Nature Reviews Neuroscience
Published
2018-09-28
Volume
19
Issue
11
Pages
687-700
ISSN
  • 1471-003X (ISSN-L)
  • 1471-0048
OpenAlex
W2894357926
Cited by
604
References
213
Citations by year
2026: 73 · 2025: 85 · 2024: 89 · 2023: 94 · 2022: 76 · 2021: 85 · 2020: 58 · 2019: 40 · 2018: 2
FWCI
7.13
Type
journal article
Language
en
Open access
Locations
  • Nature reviews. Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute on Aging (R01AG045611, R01AG062542, P01AG019724, R01AG034570)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease, amyloid-beta, tau protein, neurodegeneration, brain atrophy, hypometabolism, medial parietal cortex, medial temporal lobe, cognitive decline, dementia, disease progression
MeSH terms
Aging, Alzheimer Disease, Brain, Humans, Amyloid beta-Peptides, tau Proteins, Disease Progression, Multimodal Imaging

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