Cited by 357Alzheimer's disease research and treatmentsNeuroscience and Neuropharmacology ResearchNeuroinflammation and Neurodegeneration Mechanisms

Amyloid beta from axons and dendrites reduces local spine number and plasticity

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Wei, Wei, Nguyen, Louis N, Kessels, Helmut W, Hagiwara, Hiroaki, Sisodia, Sangram, Malinow, Roberto·2010·Nature Neuroscience

Abstract

Excessive synaptic loss is thought to be one of the earliest events in Alzheimer's disease. Amyloid beta (Abeta), a peptide secreted in an activity-modulated manner by neurons, has been implicated in the pathogenesis of Alzheimer's disease by removing dendritic spines, sites of excitatory synaptic transmission. However, issues regarding the subcellular source of Abeta, as well as the mechanisms of its production and actions that lead to synaptic loss, remain poorly understood. In rat organotypic slices, we found that acute overproduction of either axonal or dendritic Abeta reduced spine density and plasticity at nearby ( approximately 5-10 mum) dendrites. The production of Abeta and its effects on spines were sensitive to blockade of action potentials or nicotinic receptors; the effects of Abeta (but not its production) were sensitive to NMDA receptor blockade. Notably, only 30-60 min blockade of Abeta overproduction permitted induction of plasticity. Our results indicate that continuous overproduction of Abeta at dendrites or axons acts locally to reduce the number and plasticity of synapses.

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Authors
Wei, W., Nguyen, L. N., Kessels, H. W., Hagiwara, H., Sisodia, S., & Malinow, R.
Affiliations
  • Cold Spring Harbor Laboratory (US)
  • University of California San Diego (US)
  • University of Chicago (US)
Corresponding author
Malinow, Roberto
Venue
Nature Neuroscience
Published
2009-12-27
Volume
13
Issue
2
Pages
190-196
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2014739744
Cited by
357
References
50
Citations by year
2026: 12 · 2025: 15 · 2024: 19 · 2023: 16 · 2022: 22 · 2021: 20 · 2020: 24 · 2019: 15 · 2018: 21 · 2017: 17 · 2016: 22 · 2015: 11 · 2014: 28 · 2013: 34 · 2012: 37
FWCI
17.45
Type
journal article
Language
en
Open access
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Cold Spring Harbor Laboratory Institutional Repository (Cold Spring Harbor Laboratory) (acceptedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
Funders
  • National Institute on Aging (R01AG032132)
  • National Institute of Mental Health (R01MH049159)
  • National Institute of General Medical Sciences (T32GM008444)
  • National Institute of Neurological Disorders and Stroke (R01NS032827)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
amyloid-beta, Alzheimer's disease, dendritic spines, spine density, synaptic plasticity, synaptic loss, NMDA receptor, nicotinic acetylcholine receptors, action potential, excitatory synapses
MeSH terms
Action Potentials, Animals, Axons, Dendrites, Hippocampus, Neuronal Plasticity, Peptide Fragments, Receptors, Nicotinic, Synapses, Time Factors, Receptors, N-Methyl-D-Aspartate, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Pyramidal Cells, Dendritic Spines, Rats, In Vitro Techniques

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