Cited by 62Atherosclerosis and Cardiovascular DiseasesCholesterol and Lipid MetabolismImmune cells in cancer

Alternative macrophages in atherosclerosis: not always protective!

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Pourcet, Benoit, Staels, Bart·2018·Journal of Clinical Investigation

Abstract

Atherosclerosis is a chronic inflammatory disease of the vasculature that is initiated by cholesterol deposition into the arterial wall, which triggers the infiltration of immune and inflammatory cells, including monocytes and macrophages. As atherosclerotic plaques progress, localized hypoxia promotes compensatory angiogenesis from the vasa vasorum. Immature neovessels are prone to leakage, thus destabilizing the plaque and leading to intraplaque hemorrhage. Macrophages with different phenotypes, ranging from classical inflammatory subtypes to alternatively activated antiinflammatory macrophages, have been identified in atherosclerotic lesions. Antiinflammatory hemoglobin-scavenging CD163+ macrophages are present in neovessel- and hemorrhage-rich areas; however, the role of these macrophages in atherogenesis has been unclear. In this issue of the JCI, Guo, Akahori, and colleagues show that CD163+ macrophages promote angiogenesis, vessel permeability, and leucocyte infiltration in human and mouse atherosclerotic lesions through a mechanism involving hemoglobin:haptoglobin/CD163/HIF1α-mediated VEGF induction. This study thus identifies proatherogenic properties of CD163+ macrophages, which previously were thought to be beneficial.

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Authors
Pourcet, B., & Staels, B.
Affiliations
Récepteurs Nucléaires, Maladies Métaboliques et Cardiovasculaires (FR)
Corresponding author
Staels, Bart
Venue
Journal of Clinical Investigation
Published
2018-02-19
Volume
128
Issue
3
Pages
910-912
ISSN
  • 0021-9738 (ISSN-L)
  • 1558-8238
OpenAlex
W2788668307
Cited by
62
References
16
Citations by year
2026: 6 · 2025: 8 · 2024: 5 · 2023: 7 · 2022: 14 · 2021: 8 · 2020: 10 · 2019: 3 · 2018: 1
FWCI
2.35
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Funders
Agence Nationale de la Recherche (ANR-16-CE14-0001)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Atherosclerosis and Cardiovascular Diseases
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
Keywords
atherosclerosis, CD163+ macrophages, alternative macrophage activation, haptoglobin, HIF-1α, vascular endothelial growth factor, angiogenesis, intraplaque hemorrhage, vasa vasorum, vascular permeability, leukocyte infiltration
MeSH terms
Animals, Capillary Permeability, Humans, Inflammation, Macrophages, Atherosclerosis, Mice, Plaque, Atherosclerotic

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