Triple‐transgenic Alzheimer's disease mice exhibit region‐specific abnormalities in brain myelination patterns prior to appearance of amyloid and tau pathology
Open accessAbstract
Alzheimer's disease (AD) is a progressively debilitating brain disorder pathologically defined by extracellular amyloid plaques, intraneuronal neurofibrillary tangles, and synaptic disintegrity. AD has not been widely considered a disease of white matter, but more recent evidence suggests the existence of abnormalities in myelination patterns and myelin attrition in AD-afflicted human brains. Herein, we demonstrate that triple-transgenic AD (3xTg-AD) mice, which harbor the human amyloid precursor protein Swedish mutant transgene, presenilin knock-in mutation, and tau P301L mutant transgene, exhibit significant region-specific alterations in myelination patterns and in oligodendrocyte marker expression profiles at time points preceding the appearance of amyloid and tau pathology. These immunohistochemical signatures are coincident with age-related alterations in axonal and myelin sheath ultrastructure as visualized by comparative electron microscopic examination of 3xTg-AD and nontransgenic mouse brain tissue. Overall, these findings indicate that 3xTg-AD mice represent a viable model in which to examine mechanisms underlying AD-related myelination and neural transmission defects that occur early during presymptomatic stages of the disease process.
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AD pathology in the white matter includes loss of myelin and a decrease in oligodendrocyte proteins.
“AD pathology in the white matter includes the loss of myelin and a decrease in oligodendrocyte proteins [62–68].”
From Predominant expression of Alzheimer’s disease-associated BIN1 in mature oligodendrocytes and localization to white matter tracts (2016) · cites this paper as [66]
Abnormal myelination patterns have been identified prior to appearance of NFTs and amyloid plaques in a mouse model exhibiting both pathologies.
“Abnormal myelination patterns have been identified prior to appearance of NFTs and amyloid plaques in a mouse model exhibiting both pathologies (Desai et al., 2009).”
From In vivo imaging of tau pathology using multi-parametric quantitative MRI (2015) · cites this paper as Desai et al., 2009
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- Authors
- Desai, M. K., Sudol, K. L., Janelsins, M. C., Mastrangelo, M. A., Frazer, M. E., & Bowers, W. J.
- Affiliations
- University of Rochester Medicine (US)
- Corresponding author
- Bowers, William J.
- Venue
- Glia
- Publisher
- Wiley
- Published
- 2008-07-25
- Volume
- 57
- Issue
- 1
- Pages
- 54-65
- ISSN
- 0894-1491 (ISSN-L)
- 1098-1136
- PMC
- PMC2584762
- OpenAlex
- W2007812767
- Cited by
- 266
- References
- 68
- Citations by year
- 2026: 13 · 2025: 30 · 2024: 22 · 2023: 31 · 2022: 17 · 2021: 14 · 2020: 19 · 2019: 12 · 2018: 17 · 2017: 7 · 2016: 11 · 2015: 14 · 2014: 9 · 2013: 14 · 2012: 11
- FWCI
- 5.66
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Glia (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institute on Aging (R01AG023593, R01AG026328)
- Topics
- Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
- Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Keywords
- Alzheimer's disease, myelination, white matter, oligodendrocytes, 3xTg-AD mice, amyloid precursor protein, presenilin, P301L tau, axons, presymptomatic disease
- MeSH terms
- Age Factors, Alzheimer Disease, Animals, Brain, Humans, Male, Mice, Inbred C57BL, Mice, Transgenic, Myelin Sheath, Nerve Fibers, Myelinated, tau Proteins, Tauopathies, Mice, Plaque, Amyloid
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