Cited by 352Alzheimer's disease research and treatmentsClusterin in disease pathologyDementia and Cognitive Impairment Research

Clusterin (apoJ) Alters the Aggregation of Amyloid β-Peptide (Aβ1-42) and Forms Slowly Sedimenting Aβ Complexes That Cause Oxidative Stress

Oda, Tomiichiro, Wals, Pat, Osterburg, Heinz H., Johnson, Steven A., Pasinetti, Giulio M., Morgan, Todd E., Rozovsky, Irina, Stine, W.Blaine +4 more·1995·Experimental Neurology

Abstract

Clusterin (apoJ), a multifunctional apolipoprotein made by cells in the brain and many other locations, is associated with aggregated amyloid beta-peptide (A beta) in senile and diffuse plaques of Alzheimer's disease (AD). We observed that purified human serum clusterin partially blocked the aggregation of synthetic A beta 1-42, as shown by centrifugal assays (14,000g x 10 min) and by atomic force (scanning probe) microscopy. Slowly sedimenting A beta complexes were formed in the presence of clusterin, which included aggregates > 200 kDa that resist dissociation by low concentrations of SDS. Clusterin enhanced the oxidative stress caused by A beta, as assayed by oxidative stress in PC12 cells with MTT, which is widely used to estimate neurotoxicity. These indications of enhanced neurotoxicity by the MTT assay were observed in the highly aggregated rapidly sedimenting fraction, but also in more slowly sedimenting "soluble" forms. This novel activity of slowly sedimenting A beta may enhance the neurotoxicity of A beta deposits in AD brains, because soluble complexes have a potential for diffusing to damage distal neurons.

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Crossref · 10.1006/exnr.1995.1080

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Authors
Oda, T., Wals, P., Osterburg, H. H., Johnson, S. A., Pasinetti, G. M., Morgan, T. E., Rozovsky, I., Stine, W. B., Snyder, S. W., Holzman, T. F., Krafft, G. A., & Finch, C. E.
Affiliations
Northwestern University (US)
Venue
Experimental Neurology
Publisher
Elsevier BV
Published
1995-11
Volume
136
Issue
1
Pages
22-31
ISSN
0014-4886 (ISSN-L)
OpenAlex
W1584774790
Cited by
352
References
0
Citations by year
2026: 3 · 2025: 7 · 2024: 5 · 2023: 7 · 2022: 10 · 2021: 8 · 2020: 9 · 2019: 9 · 2018: 7 · 2017: 9 · 2016: 10 · 2015: 10 · 2014: 10 · 2013: 12 · 2012: 17
FWCI
6.73
Type
journal article
Language
en
Open access
closed
Locations
  • Experimental Neurology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r35ag007909-03)
  • National Institute on Aging (AG-1048, AG7909)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Oncology › Clusterin in disease pathology
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
clusterin, amyloid-beta 42, amyloid fibril formation, Alzheimer's disease, oxidative stress, neurotoxicity, amyloid plaques, diffuse plaques, PC12 cells, MTT assay
MeSH terms
Alzheimer Disease, Animals, Complement Inactivator Proteins, Dose-Response Relationship, Drug, Glycoproteins, Humans, Immunohistochemistry, Radioligand Assay, Sucrose, Amyloid beta-Protein Precursor, PC12 Cells, Oxidative Stress, Molecular Chaperones, Clusterin, Rats

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