Cited by 205Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

Mechanisms of Amyloid-β Peptide Clearance: Potential Therapeutic Targets for Alzheimer's Disease

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Yoon, Sang-Sun, AhnJo, Sang-Mee·2012·Biomolecules and Therapeutics

Abstract

Amyloid-β peptide (Aβ) is still best known as a molecule to cause Alzheimer's disease (AD) through accumulation and deposition within the frontal cortex and hippocampus in the brain. Thus, strategies on developing AD drugs have been focused on the reduc-tion of Aβ in the brain. Since accumulation of Aβ depends on the rate of its synthesis and clearance, the metabolic pathway of Aβ in the brain and the whole body should be carefully explored for AD research. Although the synthetic pathway of Aβ is equally important, we summarize primarily the clearance pathway in this paper because the former has been extensively reviewed in previous studies. The clearance of Aβ from the brain is accomplished by several mechanisms which include non-enzymatic and enzymatic pathways. Nonenzymatic pathway includes interstitial fluid drainage, uptake by microglial phagocytosis, and transport across the blood vessel walls into the circulation. Multiple Aβ-degrading enzymes (ADE) implicated in the clearance process have been identified, which include neprilysin, insulin-degrading enzyme, matrix metalloproteinase-9, glutamate carboxypeptidase II and others. A series of studies on Aβ clearance mechanism provide new insight into the pathogenesis of AD at the molecular level and suggest a new target for the development of novel therapeutics.

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Crossref · 10.4062/biomolther.2012.20.3.245

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  • Microglia form a protective barrier to protect brain tissue from the neurotoxicity of Aβ plaques.

    “forming a protective barrier to protect brain tissue from the neurotoxicity of Aβ plaques”

    From Acoustofluidic assembly of 3D neurospheroids to model Alzheimer's disease (2020) · cites this paper as [47]

    The “Uptake by Microglial Phagocytosis” section (page not provided) describes microglia as neuroprotective because they clear Aβ, and places them within amyloid plaques. It does not say they form a protective barrier around plaques; it also notes that activated microglia can release neurotoxic molecules. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Microglia promote the clearance of Aβ aggregates.

    “promotes the clearance of Aβ aggregates.47, 48”
  • Aβ clearance may occur through transport into cerebrospinal fluid, blood across the blood-brain barrier, and removal by brain-resident macrophages.

    “The Aβ clearance may occur through the transport into the cerebrospinal fluid, the blood across the blood-brain barrier (BBB), and the removal by brain-resident macrophages (Yoon and Jo, 2012).”

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1 retracted

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Research works printed but not linked: 1

  1. [61]Love S Contribution of cerebral amyloid angiopathy to Alzheimer's disease. J. Neurol. Neurosurg. Psychiatry (2004) 75 1 4 14707293 PMC1757461

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Authors
Yoon, S.-S., & AhnJo, S.-M.
Affiliations
Dankook University (KR)
Venue
Biomolecules and Therapeutics
Published
2012-05-31
Volume
20
Issue
3
Pages
245-255
ISSN
1976-9148 (ISSN-L)
OpenAlex
W2008487250
Cited by
205
References
122
Citations by year
2026: 15 · 2025: 27 · 2024: 27 · 2023: 23 · 2022: 14 · 2021: 26 · 2020: 18 · 2019: 15 · 2018: 11 · 2017: 9 · 2016: 6 · 2015: 9 · 2014: 1 · 2013: 3 · 2012: 1
FWCI
0.49
Type
journal article
Language
en
Open access
Locations
  • Biomolecules & Therapeutics (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Funders
  • National Research Foundation
  • National Research Foundation of Korea (2011-0016127)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
amyloid-beta, Alzheimer's disease, amyloid-beta clearance, neprilysin, insulin-degrading enzyme, MMP-9, prostate-specific membrane antigen, microglial phagocytosis, interstitial fluid drainage, blood-brain barrier, therapeutic target

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