Cited by 1,316Alzheimer's disease research and treatmentsParkinson's Disease Mechanisms and TreatmentsNeuroinflammation and Neurodegeneration Mechanisms

The precursor protein of non-Aβ component of Alzheimer's disease amyloid is a presynaptic protein of the central nervous system

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Iwai, Akihiko, Masliah, Eliezer, Yoshimoto, Makoto, Ge, Nianfeng, Flanagan, Lisa, Rohan de Silva, H.A, Kittel, Agnes, Saitoh, Tsunao·1995·Neuron

Abstract

Non-A beta component of Alzheimer's disease amyloid (NAC) is the second component in the amyloid from brain tissue of patients affected with Alzheimer's disease. Its precursor protein (NACP) was shown to be a brain-specific protein. In rat brain, NACP was more abundant in the neocortex, hippocampus, olfactory bulb, striatum, thalamus, and cerebellum and less abundant in the brain stem. Confocal laser microscopy analysis revealed that anti-NACP immunostaining was colocalized with synaptophysin-immunoreactive presynaptic terminals. Ultrastructural analysis showed that NACP immunoreactivity was associated with synaptic vesicles. NACP sequence showed 95% identity with that of rat synuclein 1, a synaptic/nuclear protein previously identified in rat brain, and good homology with Torpedo synuclein from the electric organ synapse and bovine phosphoneuroprotein 14 (PNP-14), a brain-specific protein present in synapses. Therefore, NACP is a synaptic protein, suggesting that synaptic aberration observed in senile plaques might be involved in amyloidogenesis in Alzheimer's disease.

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Crossref · 10.1016/0896-6273(95)90302-x

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Authors
Iwai, A., Masliah, E., Yoshimoto, M., Ge, N., Flanagan, L., Rohan de Silva, H. A., Kittel, A., & Saitoh, T.
Affiliations
University of California San Diego (US)
Venue
Neuron
Publisher
Elsevier BV
Published
1995-02
Volume
14
Issue
2
Pages
467-475
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2059261643
Cited by
1,316
References
48
Citations by year
2026: 21 · 2025: 23 · 2024: 34 · 2023: 36 · 2022: 60 · 2021: 56 · 2020: 69 · 2019: 59 · 2018: 62 · 2017: 49 · 2016: 53 · 2015: 61 · 2014: 52 · 2013: 41 · 2012: 47
FWCI
12.19
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Health Assistance Foundation
  • National Institutes of Health
  • National Institute on Aging (AG10689, AG05131, R01AG010689, P50AG005131)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
presynaptic proteins, synaptic vesicles, synaptophysin, amyloidogenesis, amyloid plaques, brain distribution, Alzheimer's disease
MeSH terms
Alzheimer Disease, Amino Acid Sequence, Animals, Antibodies, Antibody Specificity, Brain, Cattle, Humans, Molecular Sequence Data, Oligopeptides, Organ Specificity, Recombinant Proteins, Torpedo, Blotting, Western, Microscopy, Immunoelectron, Amyloid beta-Protein Precursor, Synaptophysin, Rats, Sprague-Dawley, Sequence Homology, Amino Acid, Microscopy, Confocal, Rats

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