Cited by 42Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

Promotion of β-amyloid production by C-reactive protein and its implications in the early pathogenesis of Alzheimer’s disease

Bi, Bing-Tian, Lin, Huan-Bing, Cheng, Yu-Fang, Zhou, Heng, Lin, Ting, Zhang, Ming-Zi, Li, Tie-Jun, Xu, Jiang-Ping·2012·Neurochemistry International

Abstract

C-reactive protein (CRP) and β-amyloid protein (Aβ) are involved in the development of Alzheimer's disease (AD). However, the relationship between CRP and Aβ production is unclear. In vitro and in vivo experiments were performed to investigate the association of CRP with Aβ production. Using the rat adrenal pheochromocytoma cell line (PC12 cells) to mimic neurons, cytotoxicity was evaluated by cell viability and supernatant lactate dehydrogenase (LDH) activity. The levels of amyloid precursor protein (APP), beta-site APP cleaving enzyme (BACE-1), and presenilins (PS-1 and PS-2) were investigated using real-time polymerase chain reaction and Western blotting analysis. Aβ1-42 was measured by enzyme-linked immunosorbent assay. The relevance of CRP and Aβ as well as potential mechanisms were studied using APP/PS1 transgenic (Tg) mice. Treatment with 0.5-4.0 μM CRP for 48 h decreased cell viability and increased LDH leakage in PC12 cells. Incubation with CRP at a sub-toxic concentration of 0.2 μM increased the mRNA levels of APP, BACE-1, PS-1, and PS-2, as well as Aβ1-42 production. CRP inhibitor reversed the CRP-induced upregulations of the mRNA levels of APP, BACE-1, PS-1, and PS-2, and the protein levels of APP, BACE-1, PS-1, and Aβ1-42, but did not reversed Aβ1-42 cytotoxicity. The cerebral levels of CRP and Aβ1-42 in APP/PS1 Tg mice were positively correlated, accompanied with the elevated mRNA expressions of serum amyloid P component (SAP), complement component 1q (C1q), and…

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Crossref · 10.1016/j.neuint.2011.12.007

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  • Pentameric CRP dissociation into monomeric forms is prompted by amyloid plaque in APP/PS1 mice.

    “The CRP has a role in amyloid pathology as studied and shown in APP/PS1 (amyloid precursor protein/presenilin 1) mice; pentameric CRP dissociation takes place into monomeric forms prompted by amyloid plaque [50, 51].”

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Authors
Bi, B.-T., Lin, H.-B., Cheng, Y.-F., Zhou, H., Lin, T., Zhang, M.-Z., Li, T.-J., & Xu, J.-P.
Affiliations
  • Southern Medical University (CN)
  • Nanfang Hospital (CN)
Venue
Neurochemistry International
Publisher
Elsevier BV
Published
2012-02
Volume
60
Issue
3
Pages
257-266
ISSN
0197-0186 (ISSN-L)
OpenAlex
W2038378476
Cited by
42
References
66
Citations by year
2025: 4 · 2024: 1 · 2023: 2 · 2022: 3 · 2021: 2 · 2020: 5 · 2018: 5 · 2017: 4 · 2016: 2 · 2015: 7 · 2014: 5 · 2013: 1 · 2012: 1
FWCI
1.53
Type
journal article
Language
en
Open access
closed
Locations
  • Neurochemistry International (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Natural Science Foundation of China
  • National Science and Technology Major Project
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
C-reactive protein, amyloid-beta, Alzheimer's disease, amyloid precursor protein, BACE1, presenilin, amyloid-beta 42, PC12 cells, APP/PS1 mice, serum amyloid P component, C1q, TNF-α, neurotoxicity
MeSH terms
Aging, Alzheimer Disease, Animals, C-Reactive Protein, Complement C1, Coloring Agents, Enzyme-Linked Immunosorbent Assay, L-Lactate Dehydrogenase, Mice, Inbred C57BL, Mice, Transgenic, RNA, Messenger, Tetrazolium Salts, Thiazoles, Tumor Necrosis Factor-alpha, Blotting, Western, Amyloid beta-Peptides, Aspartic Acid Endopeptidases, PC12 Cells, Mice, Rats, Presenilin-1, Presenilin-2, Amyloid Precursor Protein Secretases, Real-Time Polymerase Chain Reaction

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