Cited by 206Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Amyloid pathology is associated with progressive monoaminergic neurodegeneration in a transgenic mouse model of Alzheimer’s disease

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Liu, Ying, Yoo, Mi-Jeong, Savonenko, Alena, Stirling, Wanda, Price, Donald L., Borchelt, David R., Mamounas, Laura, Lyons, W. Ernest +2 more·2008·The Journal of Neuroscience

Abstract

beta-Amyloid (Abeta) pathology is an essential pathogenic component in Alzheimer's disease (AD). However, the significance of Abeta pathology, including Abeta deposits/oligomers and glial reactions, to neurodegeneration is unclear. In particular, despite the Abeta neurotoxicity indicated by in vitro studies, mouse models with significant Abeta deposition lack robust and progressive loss of forebrain neurons. Such results have fueled the view that Abeta pathology is insufficient for neurodegeneration in vivo. In this study, because monoaminergic (MAergic) neurons show degenerative changes at early stages of AD, we examined whether the APPswe/PS1DeltaE9 mouse model recapitulates progressive MAergic neurodegeneration occurring in AD cases. We show that the progression forebrain Abeta deposition in the APPswe/PS1DeltaE9 model is associated with progressive losses of the forebrain MAergic afferents. Significantly, axonal degeneration is associated with significant atrophy of cell bodies and eventually leads to robust loss (approximately 50%) of subcortical MAergic neurons. Degeneration of these neurons occurs without obvious local Abeta or tau pathology at the subcortical sites and precedes the onset of anxiety-associated behavior in the mice. Our results show that a transgenic mouse model of Abeta pathology develops progressive MAergic neurodegeneration occurring in AD cases.

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Crossref · 10.1523/jneurosci.4218-08.2008

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Authors
Liu, Y., Yoo, M.-J., Savonenko, A., Stirling, W., Price, D. L., Borchelt, D. R., Mamounas, L., Lyons, W. E., Blue, M. E., & Lee, M. K.
Affiliations
  • Johns Hopkins University (US)
  • National Institutes of Health (US)
  • Kennedy Krieger Institute (US)
Venue
The Journal of Neuroscience
Published
2008-12-17
Volume
28
Issue
51
Pages
13805-13814
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2056716542
Cited by
206
References
49
Citations by year
2026: 5 · 2025: 16 · 2024: 9 · 2023: 13 · 2022: 8 · 2021: 18 · 2020: 8 · 2019: 10 · 2018: 10 · 2017: 15 · 2016: 11 · 2015: 11 · 2014: 7 · 2013: 8 · 2012: 16
FWCI
9.25
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Johns Hopkins University
  • National Institute on Aging (R01AG029401)
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, monoaminergic neurons, neurodegeneration, axonal degeneration, forebrain, subcortical neurons, anxiety-like behavior, amyloid neurotoxicity, tau pathology
MeSH terms
Alzheimer Disease, Animals, Brain Stem, Disease Models, Animal, Mesencephalon, Mice, Transgenic, Nerve Degeneration, Neurons, Afferent, Biogenic Monoamines, Amyloid beta-Peptides, Prosencephalon, Disease Progression, Mice

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