Cited by 293Barrier Structure and Function StudiesAlzheimer's disease research and treatmentsIntracerebral and Subarachnoid Hemorrhage Research

Amyloid Beta induces oxidative stress-mediated blood-brain barrier changes in capillary amyloid angiopathy

Carrano, Anna, Hoozemans, Jeroen J.M., van der Vies, Saskia M., Rozemuller, Annemieke J.M., van Horssen, Jack, de Vries, Helga E.·2011·Antioxidants & Redox Signaling

Abstract

Cerebral amyloid angiopathy (CAA) is frequently observed in Alzheimer's disease (AD) and is characterized by deposition of amyloid beta (Aβ) in leptomeningeal and cortical brain vasculature. In 40% of AD cases, Aβ mainly accumulates in cortical capillaries, a phenomenon referred to as capillary CAA (capCAA). The aim of this study was to investigate blood-brain barrier (BBB) alterations in CAA-affected capillaries with the emphasis on tight junction (TJ) changes. First, capCAA brain tissue was analyzed for the distribution of TJs. Here, we show for the first time a dramatic loss of occludin, claudin-5, and ZO-1 in Aβ-laden capillaries surrounded by NADPH oxidase-2 (NOX-2)-positive activated microglia. Importantly, we observed abundant vascular expression of the Aβ transporter receptor for advanced glycation endproducts (RAGE). To unravel the underlying mechanism, a human brain endothelial cell line was stimulated with Aβ1-42 to analyze the effects of Aβ. We observed a dose-dependent cytotoxicity and increased ROS generation, which interestingly was reversed by administration of exogenous antioxidants, NOX-2 inhibitors, and by blocking RAGE. Taken together, our data evidently show that Aβ is toxic to brain endothelial cells via binding to RAGE and induction of ROS production, which ultimately leads to disruption of TJs and loss of BBB integrity.

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Crossref · 10.1089/ars.2011.3895

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Authors
Carrano, A., Hoozemans, J. J. M., van der Vies, S. M., Rozemuller, A. J. M., van Horssen, J., & de Vries, H. E.
Affiliations
  • Amsterdam UMC Location Vrije Universiteit Amsterdam (NL)
  • Departments of Molecular Cell Biology and Immunology (MCBI) and Pathology, VU University Medical Center, Amsterdam, The Netherlands.
Venue
Antioxidants & Redox Signaling
Published
2011-09
Volume
15
Issue
5
Pages
1167-1178
ISSN
  • 1523-0864 (ISSN-L)
  • 1557-7716
OpenAlex
W2054446458
Cited by
293
References
50
Citations by year
2026: 11 · 2025: 16 · 2024: 30 · 2023: 21 · 2022: 34 · 2021: 27 · 2020: 21 · 2019: 13 · 2018: 17 · 2017: 11 · 2016: 18 · 2015: 20 · 2014: 14 · 2013: 16 · 2012: 10
FWCI
9.19
Type
journal article
Language
en
Open access
closed
Locations
  • Antioxidants and Redox Signaling (publishedVersion)
  • PubMed (publishedVersion)
  • Amsterdam UMC (VU Amsterdam) - Institutional Repository (publishedVersion)
  • VU Research Portal (publishedVersion)
  • Pure Amsterdam UMC (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Funders
Chinese Academy of Agricultural Sciences
Topics
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Neurology › Intracerebral and Subarachnoid Hemorrhage Research
Keywords
cerebral amyloid angiopathy, amyloid-beta, blood-brain barrier, tight junctions, oxidative stress, reactive oxygen species, NADPH oxidase 2, microglia, receptor for advanced glycation end products, RAGE, brain endothelial cells, occludin, claudin-5, ZO-1, Alzheimer's disease, antioxidant defense
MeSH terms
Receptor for Advanced Glycation End Products, NADPH Oxidase 2, Aged, Aged, 80 and over, Antioxidants, Blood-Brain Barrier, Capillaries, Cell Line, Female, Gene Expression Regulation, Humans, Male, Membrane Glycoproteins, Membrane Proteins, Phosphoproteins, RNA, Messenger, Down-Regulation, Amyloid beta-Peptides, Cerebral Amyloid Angiopathy, Reactive Oxygen Species, Microglia, Oxidative Stress, Tight Junctions, NADPH Oxidases, Endothelial Cells, Occludin, Zonula Occludens-1 Protein

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