Globular amyloid β‐peptide 1−42 oligomer − a homogenous and stable neuropathological protein in Alzheimer's disease
Abstract
Amyloid beta-peptide (Abeta)(1-42) oligomers have recently been discussed as intermediate toxic species in Alzheimer's disease (AD) pathology. Here we describe a new and highly stable Abeta(1-42) oligomer species which can easily be prepared in vitro and is present in the brains of patients with AD and Abeta(1-42)-overproducing transgenic mice. Physicochemical characterization reveals a pure, highly water-soluble globular 60-kDa oligomer which we named 'Abeta(1-42) globulomer'. Our data indicate that Abeta(1-42) globulomer is a persistent structural entity formed independently of the fibrillar aggregation pathway. It is a potent antigen in mice and rabbits eliciting generation of Abeta(1-42) globulomer-specific antibodies that do not cross-react with amyloid precursor protein, Abeta(1-40) and Abeta(1-42) monomers and Abeta fibrils. Abeta(1-42) globulomer binds specifically to dendritic processes of neurons but not glia in hippocampal cell cultures and completely blocks long-term potentiation in rat hippocampal slices. Our data suggest that Abeta(1-42) globulomer represents a basic pathogenic structural principle also present to a minor extent in previously described oligomer preparations and that its formation is an early pathological event in AD. Selective neutralization of the Abeta globulomer structure epitope is expected to have a high potential for treatment of AD.
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In hippocampal slices, synthetic Aβ oligomers cause rapid LTP inhibition.
“In hippocampal slices, synthetic oligomers cause rapid LTP inhibition (Barghorn et al., 2005; Fa et al., 2010; Jurgensen et al., 2011; Lambert et al., 1998; Nimmrich et al., 2008; Rammes et al., 2011; Wang et al., 2002).”
From The Aβ oligomer hypothesis for synapse failure and memory loss in Alzheimer’s disease (2011) · cites this paper as Barghorn et al., 2005
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- Authors
- Barghorn, S., Nimmrich, V., Striebinger, A., Krantz, C., Keller, P., Janson, B., Bahr, M., Schmidt, M., Bitner, R. S., Harlan, J., Barlow, E., Ebert, U., & Hillen, H.
- Affiliations
- Abbott (Germany) (DE)
- Abbott (United States) (US)
- Venue
- Journal of Neurochemistry
- Publisher
- Wiley
- Published
- 2005-08-31
- Volume
- 95
- Issue
- 3
- Pages
- 834-847
- ISSN
- 0022-3042 (ISSN-L)
- 1471-4159
- OpenAlex
- W2126958454
- Cited by
- 559
- References
- 41
- Citations by year
- 2026: 7 · 2025: 14 · 2024: 12 · 2023: 19 · 2022: 19 · 2021: 21 · 2020: 18 · 2019: 21 · 2018: 25 · 2017: 23 · 2016: 24 · 2015: 19 · 2014: 29 · 2013: 40 · 2012: 40
- FWCI
- 17.78
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Neurochemistry (publishedVersion)
- PubMed (publishedVersion)
- 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
- amyloid beta peptide 1-42, amyloid-beta oligomers, Alzheimer's disease, antigenic determinants, long-term potentiation, hippocampus, transgenic mice, neurotoxicity
- MeSH terms
- Alzheimer Disease, Animals, Antibodies, Antibody Specificity, Epitopes, Cells, Cultured, Fatty Acids, Hippocampus, Humans, Male, Mice, Transgenic, Neurons, Peptide Fragments, Protein Conformation, Rabbits, Solubility, Water, Amyloid beta-Peptides, Rats, Sprague-Dawley, Long-Term Potentiation, Mice, Rats
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