Diffuse, Lake-like Amyloid-β Deposits in the Parvopyramidal Layer of the Presubiculum in Alzheimer Disease
Abstract
A characteristic feature of the parvopyramidal layer of the presubiculum of 6 individuals with Alzheimer disease (AD) was the presence of large, evenly distributed amyloid-beta (A beta) deposits, which in the end stage of the disease occupy 80.9 +/- 12.2% of the parvopyramidal layer. The strong reaction of A beta deposits with antibodies 4G8 (17-24 amino acids, aa), 6E10 (1-17 aa), and R165 (32-42 aa), and their weak reaction with antibody R162 (32-40 aa) indicate that potentially highly fibrillogenic A beta1-42 is a major constituent of presubicular amyloid. However, A beta deposits in the presubiculum are thioflavin-S- and Congo red-negative--and thus, nonfibrillar--even after 11 to 19 years of AD. The unique properties of presubicular amyloid appear to be related to their origin; amyloid-associated proteins such as apolipoproteins E, and AI, alpha1-antichymotrypsin, and heparan sulfate proteoglycan, which are promoters of fibrillization or stabilizers of A beta in neuritic plaques, are absent; activated astrocytes, which are the source of these proteins, are also absent. The unchanged number and distribution and the resting appearance of microglial cells revealed with RCA-I histochemistry suggest that they do not respond to diffuse A beta deposits. The source of nonfibrillar presubicular A beta is probably local neurons or neuronal projections to the parvocellular layer of the presubiculum. Neuronal, lake-like A beta deposition appears to be characteristic of AD pathology.…
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Co-deposition of apoE in Aβ plaques promotes focal neurodegeneration in humans and in AD Tg mice.
“It has also been recognized that co-deposition of apoE in Aβ plaques promotes focal neurodegeneration in humans and in AD Tg mice [22,29,35].”
From Blocking the apoE/Aβ interaction ameliorates Aβ-related pathology in APOE ε2 and ε4 targeted replacement Alzheimer model mice (2014) · cites this paper as [22]
Co-deposition of apoE with Aβ is an important factor promoting fibrillization of Aβ and plaque formation.
“It has been proposed that co-deposition of apoE with Aβ is an important factor promoting fibrillization of Aβ and plaque formation [22,23].”
From Blocking the apoE/Aβ interaction ameliorates Aβ-related pathology in APOE ε2 and ε4 targeted replacement Alzheimer model mice (2014) · cites this paper as [22]
Co-deposition of apoE in Aβ plaques is a prerequisite for the occurrence of focal neuritic dystrophy.
“It has been previously demonstrated that co-deposition of apoE in Aβ plaques is a prerequisite for the occurrence of focal neuritic dystrophy [22,29].”
From Blocking the apoE/Aβ interaction ameliorates Aβ-related pathology in APOE ε2 and ε4 targeted replacement Alzheimer model mice (2014) · cites this paper as [22]
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Self-citation
- Authors
- Wisniewski, H. M., Sadowski, M., Jakubowska-Sadowswka, K., Tarnawski, M., & Wegiel, J.
- Venue
- Journal of Neuropathology and Experimental Neurology
- Publisher
- Oxford University Press (OUP)
- Published
- 1998-07
- Volume
- 57
- Issue
- 7
- Pages
- 674-683
- ISSN
- 0022-3069 (ISSN-L)
- OpenAlex
- W1994370651
- Cited by
- 71
- References
- 0
- Citations by year
- 2025: 1 · 2024: 3 · 2023: 2 · 2022: 7 · 2020: 4 · 2019: 1 · 2018: 4 · 2017: 2 · 2016: 1 · 2015: 2 · 2014: 5 · 2013: 2 · 2012: 4
- FWCI
- 2.04
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Neuropathology & Experimental Neurology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institute on Aging (P01-AG1 1531, P01 AGO-4220)
- 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, amyloid-beta deposition, presubiculum, amyloid-beta 42, amyloid-beta antibodies, microglia, neurofibrillary pathology, hippocampus
- MeSH terms
- Aged, Aged, 80 and over, Alzheimer Disease, Antibody Specificity, Astrocytes, Female, Hippocampus, Humans, Immunohistochemistry, Male, Reference Values, Amyloid beta-Peptides, Pyramidal Cells
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