Cited by 270Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Amino- and carboxyl-terminal heterogeneity of β-amyloid peptides deposited in human brain

Saido, Takaomi C., Yamao-Harigaya, Wakako, Iwatsubo, Takeshi, Kawashima, Seiichi·1996·Neuroscience Letters

Abstract

We aimed to determine quantitatively the fine amino- and carboxyl-terminal structure of A beta peptides deposited in human brain using a set of 12 anti-A beta antibodies that distinguish between terminal modifications including isomerization, stereoisomerization, limited proteolysis, and cyclization. Immunochemical examination of cortical blocks from aged subjects distinguished by their total plaque load and from a young Down's syndrome patient identified the major invariantly deposited species as A beta x-42 (X = 1(D-aspartate) and 3(pyroglutamate) and/or 11(pyroglutamate)). These molecular forms, presumably representing by-products of metabolic intermediates toward degradation, are similar in being resistant to major aminopeptidases. A beta 17-42 ("p3' fragment), a major secreted form of truncated A beta with high insolubility, was found to be a minor one. A possible interpretation for these observations would be that proteolysis of A beta from its amino terminus may limit the rate of A beta catabolism.

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Crossref · 10.1016/0304-3940(96)12970-0

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11 of 11 references verified0 citation errors · 0 not checkable

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Authors
Saido, T. C., Yamao-Harigaya, W., Iwatsubo, T., & Kawashima, S.
Affiliations
  • Tokyo Metropolitan Institute of Medical Science (JP)
  • The University of Tokyo (JP)
Corresponding author
Saido, Takaomi C.
Venue
Neuroscience Letters
Publisher
Elsevier BV
Published
1996-09
Volume
215
Issue
3
Pages
173-176
ISSN
0304-3940 (ISSN-L)
OpenAlex
W2012288880
Cited by
270
References
11
Citations by year
2026: 3 · 2025: 3 · 2024: 11 · 2023: 11 · 2022: 4 · 2021: 7 · 2020: 14 · 2019: 6 · 2018: 6 · 2017: 14 · 2016: 4 · 2015: 9 · 2014: 14 · 2013: 15 · 2012: 8
FWCI
5.63
Type
journal article
Language
en
Open access
closed
Locations
  • Neuroscience Letters (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Uehara Memorial Foundation
  • Ministry of Education, Culture, Sports, Science and Technology
  • Naito Foundation
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, amyloid plaques, terminal modification, pyroglutamic acid, D-aspartate, anti-amyloid antibodies, Down syndrome, proteolysis, human brain
MeSH terms
Adult, Alzheimer Disease, Brain, Humans, Blotting, Western, Amyloid beta-Protein Precursor

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