Cited by 243Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Amyloidosis in Alzheimer’s Disease: Pathogeny, Etiology, and Related Therapeutic Directions

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Ma, Chen, Hong, Fenfang, Yang, Shulong·2022·Molecules

Abstract

The amyloid hypothesis of Alzheimer’s disease has long been the predominant theory, suggesting that Alzheimer’s disease is caused by the accumulation of amyloid beta protein (Aβ) in the brain, leading to neuronal toxicity in the central nervous system (CNS). Because of breakthroughs in molecular medicine, the amyloid pathway is thought to be central to the pathophysiology of Alzheimer’s disease (AD). Currently, it is believed that altered biochemistry of the Aβ cycle remains a central biological feature of AD and is a promising target for treatment. This review provides an overview of the process of amyloid formation, explaining the transition from amyloid precursor protein to amyloid beta protein. Moreover, we also reveal the relationship between autophagy, cerebral blood flow, ACHE, expression of LRP1, and amyloidosis. In addition, we discuss the detailed pathogenesis of amyloidosis, including oxidative damage, tau protein, NFTs, and neuronal damage. Finally, we list some ways to treat AD in terms of decreasing the accumulation of Aβ in the brain.

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  • The amyloid hypothesis emphasizes that accumulation of Aβ plaques in the brain is a central event in the pathogenesis of AD, leading to neurodegeneration and cognitive decline.

    “The amyloid hypothesis emphasizes that the accumulation of Aβ plaques in the brain is a central event in the pathogenesis of AD, leading to neurodegeneration and cognitive decline.”
  • The hydrophobic C-terminus of Aβ42 facilitates its aggregation and formation of senile plaques.

    “The hydrophobic C-terminus of Aβ42 facilitates its aggregation and the formation of senile plaques.”
  • Aβ originates from processing of APP through sequential cleavage by β-secretase and γ-secretase, resulting in various lengths of Aβ fragments, with Aβ40 and Aβ42 predominant.

    “Aβ originates from the processing of the amyloid precursor protein (APP) through sequential cleavage by β-secretase and γ-secretase, resulting in various lengths of Aβ fragments, with Aβ40 and Aβ42 being predominant.”
  • The relationship between FAD mutations and Aβ levels is complex, and plaque formation in sporadic AD is influenced by a dynamic imbalance between Aβ production and clearance mechanisms.

    “However, the relationship between FAD mutations and Aβ levels is complex, and the plaque formation in sporadic AD is influenced by a dynamic imbalance between Aβ production and clearance mechanisms [11,12].”
  • Mutations in PS1 can promote Aβ accumulation through increased production and impaired autophagy functions.

    “Mutations in presenilin-1 (PS1) can promote Aβ accumulation through increased production and impaired autophagy functions.”

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Authors
Ma, C., Hong, F., & Yang, S.
Affiliations
  • Nanchang University (CN)
  • Experimental Center of Pathogen Biology, Nanchang University, Nanchang 330006, China
  • Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, China
Venue
Molecules
Publisher
MDPI AG
Published
2022-02-11
Volume
27
Issue
4
Pages
1210
ISSN
1420-3049 (ISSN-L)
OpenAlex
W4212889165
Cited by
243
References
83
Citations by year
2026: 51 · 2025: 80 · 2024: 65 · 2023: 36 · 2022: 11
FWCI
6.60
Type
journal article
Language
en
Open access
Locations
  • Molecules (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
the National Natural Science Foundation of China (82060661,81660151 and 81660751)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease, amyloidosis, amyloid hypothesis, amyloid-beta, amyloid precursor protein, amyloid fibril formation, autophagy, cerebral blood flow, acetylcholinesterase, LRP1, oxidative damage, tau protein, neurofibrillary tangles, neuronal injury, Alzheimer's disease treatment
MeSH terms
Alzheimer Disease, Amyloid, Amyloidosis, Animals, Autophagy, Brain, Disease Susceptibility, Gene Expression Regulation, Humans, Risk Factors, Biomarkers, Amyloid beta-Peptides, Disease Management, Plaque, Amyloid

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