Cited by 209Barrier Structure and Function StudiesAlzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration Mechanisms

Differing associations between Aβ accumulation, hypoperfusion, blood–brain barrier dysfunction and loss of PDGFRB pericyte marker in the precuneus and parietal white matter in Alzheimer's disease

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Miners, J Scott, Schulz, Isabel, Love, Seth·2018·Journal of Cerebral Blood Flow & Metabolism

Abstract

Recent studies implicate loss of pericytes in hypoperfusion and blood–brain barrier (BBB) leakage in Alzheimer's disease (AD). In this study, we have measured levels of the pericyte marker, platelet-derived growth factor receptor-β (PDGFRB), and fibrinogen (to assess blood–brain barrier leakage), and analyzed their relationship to indicators of microvessel density (von Willebrand factor level), ante-mortem oxygenation (myelin-associated glycoprotein:proteolipid protein-1 ratio and vascular endothelial growth factor level), Aβ level and plaque load, in precuneus and underlying white matter from 49 AD to 37 control brains. There was reduction in PDGFRB and increased fibrinogen in the precuneus in AD. These changes correlated with reduction in oxygenation and with plaque load. In the underlying white matter, increased fibrinogen correlated with reduced oxygenation, but PDGFRB level was unchanged. The level of platelet-derived growth factor-ββ (PDGF-BB), important for pericyte maintenance, was increased in AD but mainly in the insoluble tissue fraction, correlating with insoluble Aβ level. Loss of the PDGFRB within the precuneus in AD is associated with fibrinogen leakage and reduced oxygenation, and related to fibrillar Aβ accumulation. In contrast, fibrinogen leakage and reduced oxygenation of underlying white matter occur independently of loss of PDGFRB, perhaps secondary to reduced transcortical perfusion.

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  • Post mortem studies show vascular capillary leakages of blood-derived proteins in the prefrontal and entorhinal cortex and hippocampus of AD patients including perivascular accumulation of fibrin(ogen), thrombin, albumin, immunoglobulin G, and iron-containing proteins such as hemosiderin.

    “Post mortem studies show vascular capillary leakages of blood-derived proteins in the prefrontal and entorhinal cortex and hippocampus of AD patients including perivascular accumulation of fibrin(ogen), thrombin, albumin, immunoglobulin G (IgG), and iron-containing proteins such as hemosiderin (120, 125, 230, 267, 412, 509, 527, 691).”

    From Blood-Brain Barrier: From Physiology to Disease and Back (2019) · cites this paper as [412]

    The Introduction describes blood–brain barrier leakage of serum proteins such as fibrinogen in post-mortem AD tissue, and the Results report increased fibrinogen in the precuneus and underlying white matter. The cited paper does not establish leakage in the prefrontal or entorhinal cortex or hippocampus, or the claimed accumulation of thrombin, albumin, IgG, or hemosiderin. Page numbers are unavailable in our copy. (LLM, conf=0.86)

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  • Pericyte loss has been confirmed by decreased levels of pericyte marker PDGFRβ in the precuneus and loss of pericytes in the subcortical white matter.

    “Pericyte loss has been confirmed by decreased levels of pericyte marker PDGFR 𝛃 in the precuneus (412) and loss of pericytes in the subcortical white matter (419).”

    From Blood-Brain Barrier: From Physiology to Disease and Back (2019) · cites this paper as [412]

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Research works printed but not linked: 2

  1. [27]Thomas TL Miners SJ Kehoe PG et al. Correlation between levels of VEGF and insoluble Aβ(1-42) in the cerebral cortex in Alzheimer's disease. Neuropathol Appl Neurobiol 2015; 41: 22.
  2. [44]Craggs LJ Fenwick R Oakley AE et al. Immunolocalization of platelet-derived growth factor receptor-β (PDGFR-β) and pericytes in cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). Neuropathol Appl Neurobiol 2015; 41: 557– 570. 25303037 PMC5098250

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Authors
Miners, J. S., Schulz, I., & Love, S.
Affiliations
University of Bristol (GB)
Corresponding author
Love, Seth
Venue
Journal of Cerebral Blood Flow & Metabolism
Published
2017-02-02
Volume
38
Issue
1
Pages
103-115
ISSN
  • 0271-678X (ISSN-L)
  • 1559-7016
OpenAlex
W2583122146
Cited by
208
References
58
Citations by year
2026: 11 · 2025: 17 · 2024: 35 · 2023: 36 · 2022: 26 · 2021: 27 · 2020: 20 · 2019: 22 · 2018: 11 · 2017: 3
FWCI
7.63
Type
journal article
Language
en
Open access
Locations
  • Journal of Cerebral Blood Flow & Metabolism (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Bristol Research (University of Bristol) (publishedVersion, other-oa)
Funders
  • Alzheimer's Society
  • British Heart Foundation (PG/10/47/28285)
  • Medical Research Council
Topics
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease, pericytes, PDGFRβ, PDGF-BB, fibrinogen, blood-brain barrier disruption, cerebral hypoperfusion, precuneus, parietal white matter, amyloid plaques, fibrillar amyloid-beta, microvessel density, von Willebrand factor, myelin-associated glycoprotein, PLP1, cerebral perfusion
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Blood-Brain Barrier, Brain, Capillary Permeability, Cerebrovascular Circulation, Female, Humans, Male, Biomarkers, Amyloid beta-Peptides, Pericytes, Receptor, Platelet-Derived Growth Factor beta, White Matter

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