Cited by 740Alzheimer's disease research and treatmentsNeuroscience and Neuropharmacology ResearchMemory and Neural Mechanisms

The DOI matches its Crossref record; 54 of the 56 references it cites were found in a registry or an index.

Picomolar Amyloid-β Positively Modulates Synaptic Plasticity and Memory in Hippocampus

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Abstract

Amyloid-β (Aβ) peptides are produced in high amounts during Alzheimer's disease, causing synaptic and memory dysfunction. However, they are also released in lower amounts in normal brains throughout life during synaptic activity. Here we show that low picomolar concentrations of a preparation containing both Aβ 42 monomers and oligomers cause a marked increase of hippocampal long-term potentiation, whereas high nanomolar concentrations lead to the well established reduction of potentiation. Picomolar levels of Aβ 42 also produce a pronounced enhancement of both reference and contextual fear memory. The mechanism of action of picomolar Aβ 42 on both synaptic plasticity and memory involves α7-containing nicotinic acetylcholine receptors. These findings strongly support a model for Aβ effects in which low concentrations play a novel positive, modulatory role on neurotransmission and memory, whereas high concentrations play the well known detrimental effect culminating in dementia.

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Crossref · 10.1523/jneurosci.2692-08.2008

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  1. 1985, Exp Brain Res, 58, 11
  2. 2005, Methods Mol Biol, 299, 279

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Metadata

Authors
Puzzo, D., Privitera, L., Leznik, E., Fà, M., Staniszewski, A., Palmeri, A., & Arancio, O.
Affiliations
  • Columbia University Irving Medical Center (US)
  • University of Catania (IT)
  • Columbia University (US)
Corresponding author
Arancio, Ottavio
Venue
The Journal of Neuroscience
Published
2008-12-31
Volume
28
Issue
53
Pages
14537-14545
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2078917784
Cited by
740
References
56
Citations by year
2026: 17 · 2025: 23 · 2024: 41 · 2023: 38 · 2022: 40 · 2021: 45 · 2020: 49 · 2019: 44 · 2018: 38 · 2017: 46 · 2016: 46 · 2015: 50 · 2014: 51 · 2013: 42 · 2012: 44
FWCI
28.04
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • UNICA IRIS Institutional Research Information System (University of Cagliari) (submittedVersion)
Funders
  • Alzheimer's Association (NIRG-07-59597)
  • National Institutes of Health
  • National Institute of Neurological Disorders and Stroke (R01NS040045, R01NS049442, NS049442)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
amyloid-beta, synaptic plasticity, long-term potentiation, hippocampus, memory, fear memory, contextual fear, alpha7 nicotinic acetylcholine receptor, Alzheimer's disease, amyloid-beta oligomers, neurotransmission
MeSH terms
Analysis of Variance, Animals, Bungarotoxins, Dose-Response Relationship, Drug, Electric Stimulation, Hippocampus, Humans, Male, Mecamylamine, Memory, Mice, Inbred C57BL, Neuronal Plasticity, Peptide Fragments, Receptors, Nicotinic, Synapses, 2-Amino-5-phosphonovalerate, Amyloid beta-Peptides, Mice, Knockout, Patch-Clamp Techniques, Excitatory Amino Acid Antagonists, Nicotinic Antagonists, Maze Learning, Excitatory Postsynaptic Potentials, Mice, alpha7 Nicotinic Acetylcholine Receptor, In Vitro Techniques

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