Cited by 483Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Neuronal cell death is preceded by cell cycle events at all stages of Alzheimer’s disease

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Yang, Yan, Mufson, Elliott J., Herrup, Karl·2003·The Journal of Neuroscience

Abstract

Cell cycle events play a major role in the loss of neurons in advanced Alzheimer's disease (AD). It is currently unknown, however, whether the same is true for the neuronal losses in early disease stages. To explore this issue we analyzed brain autopsy material from individuals clinically categorized with mild cognitive impairment (MCI), many if not most of whom will progress to AD. Immunocytochemistry for three cell cycle-related proteins, proliferating cell nuclear antigen, cyclin D, and cyclin B, was performed on sections from hippocampus, basal nucleus of Meynert, and entorhinal cortex. The results obtained from MCI cases were compared with material from individuals diagnosed with AD and those without cognitive impairment. In both hippocampus and basal nucleus, there was a significant percentage of cell cycle immunopositive neurons in the MCI cases. These percentages were similar to those found in the AD cases but significantly higher than non-cognitively impaired controls. In entorhinal cortex, the density of cell cycle-positive neurons was greater in MCI than in AD. However, we observed large variations in the percentages of immunopositive neurons from individual to individual. These findings lend support to the hypothesis that both the mechanism of cell loss (a cell cycle-induced death) and the rate of cell loss (a slow atrophy over several months) are identical at all stages of the AD disease process. The implication of the findings for human clinical trials is discussed.

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Crossref · 10.1523/jneurosci.23-07-02557.2003

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Authors
Yang, Y., Mufson, E. J., & Herrup, K.
Affiliations
  • University Hospitals of Cleveland (US)
  • Rush University Medical Center (US)
Venue
The Journal of Neuroscience
Published
2003-04-01
Volume
23
Issue
7
Pages
2557-2563
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1485747833
Cited by
483
References
48
Citations by year
2026: 6 · 2025: 6 · 2024: 11 · 2023: 15 · 2022: 20 · 2021: 28 · 2020: 17 · 2019: 5 · 2018: 20 · 2017: 13 · 2016: 15 · 2015: 24 · 2014: 24 · 2013: 23 · 2012: 22
FWCI
17.82
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
Funders
  • Blanchette Hooker Rockefeller Fund
  • U.S. Public Health Service (A16668, A 09446)
  • National Institute on Aging (AG-08012, AG 10161, AG-14449, P50AG008012, P01AG014449, P30AG010161)
  • National Institute of Neurological Disorders and Stroke (R01NS020591, NS20591)
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, neuronal cell death, cell cycle, mild cognitive impairment, proliferating cell nuclear antigen, cyclin D, cyclin B, hippocampus, basal ganglia, entorhinal cortex, brain atrophy, disease progression
MeSH terms
Aged, Alzheimer Disease, Cell Count, Cell Cycle, Cognition Disorders, Female, Hippocampus, Humans, Immunohistochemistry, Male, Neurons, Cyclins, Cell Death, Disease Progression, Entorhinal Cortex, Proliferating Cell Nuclear Antigen, Cyclin B, Basal Nucleus of Meynert, Cyclin D

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