Evidence map›Paper›PMID 25394486›Full record

ReviewMolecular neurodegeneration2014

Oligomeric Aβ-induced synaptic dysfunction in Alzheimer's disease.

Shichun Tu, Shu-ichi Okamoto, Stuart A Lipton, Huaxi Xu

Open access · goldAbstract readReview
In one paragraph

Review in Molecular neurodegeneration, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 297 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
297citing papers in PubMed, 2 pooled it
25.0field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

297 citing papers in PubMed, 2 syntheses or guidelines pooled it, 540 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Excitation-inhibition imbalance links amyloid pathophysiology to cognition in non-demented individuals.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
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  7. Review
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  11. Toxic mechanisms of amyloid oligomers and therapeutic strategies.Protein science : a publication of the Protein Society · 2026
    Review
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  16. Review
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237 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Shichun TuNeuroscience and Aging Research Center, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA. shichuntu@sanfordburnham.org.
Shu-ichi Okamoto
Stuart A Lipton
Huaxi Xu
Sanford Burnham Prebys Medical Discovery Institute · US

Funding

PROJECT III - GENETIC APPROACH TO EXCITATORY TRANSMISSIONP01HD029587 · NICHD · SCINTILLON INSTITUTE FOR PHOTOBIOLOGY · PI LIPTON, STUART A · 1992 to 2016
$21.9M
Regulation of Protein Trafficking in NeurodegenerationR01NS046673 · NINDS · SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INSTITUTE · PI XU, HUAXI · 2003 to 2018
$5.8M
Project-002P30NS076411 · NINDS · SCINTILLON INSTITUTE FOR PHOTOBIOLOGY · PI LIPTON, STUART A · 2011 to 2016
$4.5M
The Role of Appoptosin in Alzheimer's Disease and Other TauopathiesR01AG038710 · NIA · SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INSTITUTE · PI XU, HUAXI · 2011 to 2019
$3.9M
Identifying genes in Beta-Amyloid ProductionR01AG021173 · NIA · SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INSTITUTE · PI XU, HUAXI · 2004 to 2015
$3.3M
Modeling Parkinson's Disease with Isogenic hiPSC-Derived Dopaminergic NeuronsR01NS086890 · NINDS · SCRIPPS RESEARCH INSTITUTE, THE · PI LIPTON, STUART A · 2014 to 2018
$2.1M
Roles of SN27 in regulating glutamate receptors during neurodegenerationR01AG044420 · NIA · SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INSTITUTE · PI XU, HUAXI · 2013 to 2017
$2.0M
Protection of Brain Injury from Cyanide Poisoning by Carnosic AcidR21NS080799 · NINDS · SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INSTITUTE · PI LIPTON, STUART A · 2012 to 2013
$975k
Phosphoproteomic tools for synaptic vs. extrasynaptic NMDA receptor signalingR21MH102672 · NIMH · SCINTILLON INSTITUTE FOR PHOTOBIOLOGY · PI OKAMOTO, SHU-ICHI · 2014 to 2015
$531k
NIA NIH HHS R01 AG021173NIA NIH HHS R01AG021173NIA NIH HHS R01 AG038710NIA NIH HHS R01AG038710NIA NIH HHS R01 AG044420NIA NIH HHS R01AG044420NICHD NIH HHS P01 HD029587NICHD NIH HHS P01 HD29587NIMH NIH HHS R21 MH102672NINDS NIH HHS P30 NS076411NINDS NIH HHS R01 NS046673NINDS NIH HHS R01NS046673NINDS NIH HHS R01 NS086890NINDS NIH HHS R21 NS080799
6 · The paper itself

Abstract

Alzheimer's disease (AD) is a devastating disease characterized by synaptic and neuronal loss in the elderly. Compelling evidence suggests that soluble amyloid-β peptide (Aβ) oligomers induce synaptic loss in AD. Aβ-induced synaptic dysfunction is dependent on overstimulation of N-methyl-D-aspartate receptors (NMDARs) resulting in aberrant activation of redox-mediated events as well as elevation of cytoplasmic Ca2+, which in turn triggers downstream pathways involving phospho-tau (p-tau), caspases, Cdk5/dynamin-related protein 1 (Drp1), calcineurin/PP2B, PP2A, Gsk-3β, Fyn, cofilin, and CaMKII and causes endocytosis of AMPA receptors (AMPARs) as well as NMDARs. Dysfunction in these pathways leads to mitochondrial dysfunction, bioenergetic compromise and consequent synaptic dysfunction and loss, impaired long-term potentiation (LTP), and cognitive decline. Evidence also suggests that Aβ may, at least in part, mediate these events by causing an aberrant rise in extrasynaptic glutamate levels by inhibiting glutamate uptake or triggering glutamate release from glial cells. Consequent extrasynaptic NMDAR (eNMDAR) overstimulation then results in synaptic dysfunction via the aforementioned pathways. Consistent with this model of Aβ-induced synaptic loss, Aβ synaptic toxicity can be partially ameliorated by the NMDAR antagonists (such as memantine and NitroMemantine). PSD-95, an important scaffolding protein that regulates synaptic distribution and activity of both NMDA and AMPA receptors, is also functionally disrupted by Aβ. PSD-95 dysregulation is likely an important intermediate step in the pathological cascade of events caused by Aβ. In summary, Aβ-induced synaptic dysfunction is a complicated process involving multiple pathways, components and biological events, and their underlying mechanisms, albeit as yet incompletely understood, may offer hope for new therapeutic avenues.

Indexed as

Alzheimer DiseaseAmyloid beta-PeptidesAnimalsHumansSynapsesAmyloid beta-Peptides

Identifiers

PMID25394486
PMCPMC4237769
OpenAlexW2061387301

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.