Cited by 663Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsPhagocytosis and Immune Regulation

Microglial Cells Internalize Aggregates of the Alzheimer's Disease Amyloid β-Protein Via a Scavenger Receptor

Open access
Paresce, Donata M., Ghosh, Richik N., Maxfield, Frederick R.·1996·Neuron

Abstract

Microglia are immune system cells associated with Alzheimer's disease plaques containing beta-amyloid (A beta). Murine microglia internalize microaggregates of fluorescently labeled or radioiodinated A beta peptide 1-42. Uptake was confirmed using aggregates of unlabeled A beta detected by immunofluorescence. Uptake of A beta was reduced by coincubation with excess acetyl-low density lipoprotein (Ac-LDL) or other scavenger receptor (SR) ligands, and Dil-labeled Ac-LDL uptake by microglia was blocked by excess A beta. CHO cells transfected with class A or B SRs showed significantly enhanced uptake of A beta. These results show that microglia express SRs that may play a significant role in the clearance of A beta plaques. Binding to SRs could activate inflammation responses that contribute to the pathology of Alzheimer's disease.

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Crossref · 10.1016/s0896-6273(00)80187-7

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9 of 9 references verified0 citation errors · 0 not checkable

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Authors
Paresce, D. M., Ghosh, R. N., & Maxfield, F. R.
Affiliations
  • Columbia University (US)
  • Cornell University (US)
Corresponding author
Maxfield, Frederick R.
Venue
Neuron
Publisher
Elsevier BV
Published
1996-09
Volume
17
Issue
3
Pages
553-565
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2092411904
Cited by
663
References
9
Citations by year
2026: 9 · 2025: 15 · 2024: 22 · 2023: 17 · 2022: 20 · 2021: 31 · 2020: 23 · 2019: 14 · 2018: 15 · 2017: 21 · 2016: 18 · 2015: 20 · 2014: 21 · 2013: 22 · 2012: 24
FWCI
19.55
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
  • University of Washington
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK27083)
  • National Institute of Neurological Disorders and Stroke (R01NS034761, NS34761)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
Keywords
microglia, Alzheimer's disease, amyloid-beta, amyloid plaques, scavenger receptors, receptor-mediated uptake, amyloid clearance, scavenger receptor A, scavenger receptor class B, inflammation, microaggregates
MeSH terms
alpha-Macroglobulins, Alzheimer Disease, Animals, Antineoplastic Agents, Biological Transport, Brain Chemistry, Carbocyanines, Fluorescent Dyes, Intracellular Membranes, Kinetics, Lipoproteins, Cholesterol, LDL, Mutation, Polysaccharides, Receptors, Cell Surface, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Microglia, Mice

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