Cited by 1,031Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Classification and basic pathology of Alzheimer disease

Duyckaerts, Charles, Delatour, Benoît, Potier, Marie-Claude·2009·Acta Neuropathologica

Abstract

The lesions of Alzheimer disease include accumulation of proteins, losses of neurons and synapses, and alterations related to reactive processes. Extracellular Abeta accumulation occurs in the parenchyma as diffuse, focal or stellate deposits. It may involve the vessel walls of arteries, veins and capillaries. The cases in which the capillary vessel walls are affected have a higher probability of having one or two apoepsilon 4 alleles. Parenchymal as well as vascular Abeta deposition follows a stepwise progression. Tau accumulation, probably the best histopathological correlate of the clinical symptoms, takes three aspects: in the cell body of the neuron as neurofibrillary tangle, in the dendrites as neuropil threads, and in the axons forming the senile plaque neuritic corona. The progression of tau pathology is stepwise and stereotyped from the entorhinal cortex, through the hippocampus, to the isocortex. The neuronal loss is heterogeneous and area-specific. Its mechanism is still discussed. The timing of the synaptic loss, probably linked to Abeta peptide itself, maybe as oligomers, is also controversial. Various clinico-pathological types of Alzheimer disease have been described, according to the type of the lesions (plaque only and tangle predominant), the type of onset (focal onset), the cause (genetic or sporadic) and the associated lesions (Lewy bodies, vascular lesions, hippocampal sclerosis, TDP-43 inclusions and argyrophilic grain disease).

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Crossref · 10.1007/s00401-009-0532-1

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Authors
Duyckaerts, C., Delatour, B., & Potier, M.-C.
Affiliations
  • Assistance Publique – Hôpitaux de Paris (FR)
  • Centre National de la Recherche Scientifique (FR)
Corresponding author
Duyckaerts, Charles
Venue
Acta Neuropathologica
Published
2009-04-21
Volume
118
Issue
1
Pages
5-36
ISSN
  • 0001-6322 (ISSN-L)
  • 1432-0533
OpenAlex
W2051218719
Cited by
1,031
References
362
Citations by year
2026: 31 · 2025: 54 · 2024: 62 · 2023: 76 · 2022: 81 · 2021: 76 · 2020: 80 · 2019: 40 · 2018: 50 · 2017: 50 · 2016: 52 · 2015: 59 · 2014: 56 · 2013: 77 · 2012: 65
FWCI
6.54
Type
journal article
Language
en
Open access
closed
Locations
  • Acta Neuropathologica (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease, amyloid-beta deposition, tau pathology, neurofibrillary tangles, neuropil threads, amyloid plaques, synaptic loss, neuronal loss, APOE ε4, entorhinal cortex, hippocampus, Lewy bodies, hippocampal sclerosis, TDP-43 inclusions, argyrophilic grain disease, disease progression
MeSH terms
Alzheimer Disease, Animals, Brain, DNA-Binding Proteins, Gliosis, Humans, Nerve Degeneration, Synaptic Transmission, Neuronal Plasticity, Neurons, Sclerosis, Amyloid beta-Peptides, Lewy Bodies, Neurofibrillary Tangles, tau Proteins, Cell Death, Age of Onset, Disease Progression, Tauopathies, Neurogenesis, Plaque, Amyloid

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