Cited by 657Barrier Structure and Function StudiesAlzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration Mechanisms

The DOI matches its Crossref record; 41 of the 41 references it cites were found in a registry or an index.

Accelerated pericyte degeneration and blood–brain barrier breakdown in apolipoprotein E4 carriers with Alzheimer’s disease

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Halliday, Matthew R, Rege, Sanket V, Ma, Qingyi, Zhao, Zhen, Miller, Carol A, Winkler, Ethan A, Zlokovic, Berislav V·2016·Journal of Cerebral Blood Flow & Metabolism

Abstract

The blood–brain barrier (BBB) limits the entry of neurotoxic blood-derived products and cells into the brain that is required for normal neuronal functioning and information processing. Pericytes maintain the integrity of the BBB and degenerate in Alzheimer’s disease (AD). The BBB is damaged in AD, particularly in individuals carrying apolipoprotein E4 ( APOE4) gene, which is a major genetic risk factor for late-onset AD. The mechanisms underlying the BBB breakdown in AD remain, however, elusive. Here, we show accelerated pericyte degeneration in AD APOE4 carriers >AD APOE3 carriers >non-AD controls, which correlates with the magnitude of BBB breakdown to immunoglobulin G and fibrin. We also show accumulation of the proinflammatory cytokine cyclophilin A (CypA) and matrix metalloproteinase-9 (MMP-9) in pericytes and endothelial cells in AD ( APOE4 > APOE3), previously shown to lead to BBB breakdown in transgenic APOE4 mice. The levels of the apoE lipoprotein receptor, low-density lipoprotein receptor-related protein-1 (LRP1), were similarly reduced in AD APOE4 and APOE3 carriers. Our data suggest that APOE4 leads to accelerated pericyte loss and enhanced activation of LRP1-dependent CypA–MMP-9 BBB-degrading pathway in pericytes and endothelial cells, which can mediate a greater BBB damage in AD APOE4 compared with AD APOE3 carriers.

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Crossref · 10.1038/jcbfm.2015.44

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Metadata

Authors
Halliday, M. R., Rege, S. V., Ma, Q., Zhao, Z., Miller, C. A., Winkler, E. A., & Zlokovic, B. V.
Affiliations
  • University of Southern California (US)
  • University of California, San Francisco (US)
  • Department of Physiology and Biophysics, Center for Neurodegeneration and Regeneration, Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA
Venue
Journal of Cerebral Blood Flow & Metabolism
Published
2015-03-11
Volume
36
Issue
1
Pages
216-227
ISSN
  • 0271-678X (ISSN-L)
  • 1559-7016
OpenAlex
W2055467683
Cited by
649
References
41
Citations by year
2026: 54 · 2025: 62 · 2024: 72 · 2023: 63 · 2022: 69 · 2021: 85 · 2020: 71 · 2019: 49 · 2018: 41 · 2017: 35 · 2016: 29 · 2015: 18
FWCI
21.91
Type
journal article
Language
en
Open access
Locations
  • Journal of Cerebral Blood Flow & Metabolism (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • The Scholars Repository - LLU (Loma Linda University) (submittedVersion)
Funders
  • National Institutes of Health
  • National Institute on Aging (R01AG023084, R01AG039452, R37AG023084, P50-AG05142, P50AG005142, R37AG23084, RF1AG039452)
  • National Institute of Neurological Disorders and Stroke (R37NS034467, R01NS034467, R37NS34467)
Topics
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease, APOE ε4, blood-brain barrier disruption, pericyte degeneration, cyclophilin A, MMP-9, LRP1, IgG, fibrin, inflammatory cytokines, endothelial cells, APOE ε4 carriers
MeSH terms
Aged, Aged, 80 and over, Alleles, Alzheimer Disease, Blood-Brain Barrier, Cell Count, Endothelium, Vascular, Female, Humans, Male, Cohort Studies, Protein Isoforms, Pericytes, Apolipoprotein E4

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