Cited by 260Alzheimer's disease research and treatmentsNeurological Disease Mechanisms and TreatmentsBarrier Structure and Function Studies

Altered morphology and 3D architecture of brain vasculature in a mouse model for Alzheimer's disease

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Meyer, Eric P., Ulmann-Schuler, Alexandra, Staufenbiel, Matthias, Krucker, Thomas·2008·Proceedings of the National Academy of Sciences

Abstract

Substantial evidence from epidemiological, pathological, and clinical reports suggests that vascular factors are critical in the pathogenesis of Alzheimer's disease (AD), and changes in blood flow are currently the most reliable indicators of the disease. We previously reported that older APP23 transgenic (tg) mice have significant blood flow alterations correlated with structural modifications of blood vessels. For the present study, our objective was to analyze the age-dependent morphological and architectural changes of the cerebral vasculature of APP23 tg mice. To visualize the 3D arrangement of the entire brain vasculature, we used vascular corrosion casts. Already at young ages, when typically parenchymal amyloid plaques are not yet present, APP23 tg mice had significant alterations, particularly of the microvasculature, often accompanied by small deposits attached to the vessels. In older animals, vasculature abruptly ended at amyloid plaques, resulting in holes. Often, small deposits were sitting near or at the end of truncated vessels. Between such holes, the surrounding vascular array appeared more dense and showed features typical for angiogenesis. We propose that small amyloid aggregates associated with the microvasculature lead to morphological and architectural alterations of the vasculature, resulting in altered local blood flow. The characteristic early onset of vascular alterations suggests that imaging blood flow and/or vasculature architecture could be used as a tool for early diagnosis of the disease and to monitor therapies.

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  • Vasculopathy in murine models of amyloidosis has structural and functional consequences, including reduced cortical blood flow early in life and damaged capillary systems.

    “A number of structural and functional consequences of vasculopathy have been reported in murine models of amyloidosis, such as reduced cortical blood flow already early in life (He ´bert et al., 2013), as well as damaged capillary systems (Meyer et al., 2008).”

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Authors
Meyer, E. P., Ulmann-Schuler, A., Staufenbiel, M., & Krucker, T.
Affiliations
  • University of Zurich (CH)
  • *Department of Zoology, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland;
  • Novartis Institutes for BioMedical Research (CH)
  • Novartis Institutes for BioMedical Research, Inc., Discovery Technologies, Cambridge, MA 02139; and
Corresponding author
Krucker, Thomas
Venue
Proceedings of the National Academy of Sciences
Published
2008-03-04
Volume
105
Issue
9
Pages
3587-3592
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2146417688
Cited by
260
References
60
Citations by year
2026: 7 · 2025: 10 · 2024: 13 · 2023: 15 · 2022: 12 · 2021: 16 · 2020: 18 · 2019: 17 · 2018: 18 · 2017: 17 · 2016: 14 · 2015: 10 · 2014: 16 · 2013: 12 · 2012: 20
FWCI
9.96
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neurological Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
Keywords
Alzheimer's disease, APP23 transgenic mice, cerebral vasculature, microcirculation, amyloid plaques, blood flow, vascular corrosion casts, angiogenesis, early diagnosis, amyloid aggregates
MeSH terms
Age Factors, Alzheimer Disease, Animals, Capillaries, Cerebrovascular Circulation, Cerebrovascular Disorders, Mice, Transgenic, Corrosion Casting, Models, Animal, Mice, Plaque, Amyloid

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