Evidence map›Paper›PMID 21472769›Full record

ArticleAnnals of neurology2011

Endogenous amyloid-β is necessary for hippocampal synaptic plasticity and memory.

Daniela Puzzo, Lucia Privitera, Mauro Fa', Agnieszka Staniszewski, Gakuji Hashimoto, Fahad Aziz, Mikako Sakurai, Elena M Ribe, Carol M Troy, Marc Mercken and 3 more

Abstract read
In one paragraph

Article in Annals of neurology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 151 papers.

0numbers the graph read from it
0cells of the map it votes in
151citing papers in PubMed
7.7field-weighted citation impact, top 2% 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

151 citing papers in PubMed, 299 citations in OpenAlex.

  1. Review
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  8. Physics of Protein Aggregation in Normal and Accelerated Brain Aging.BioEssays : news and reviews in molecular, cellular and developmental biology · 2025
    Review
  9. Alzheimer disease: Amyloid peptide controversies and challenges of anti-Aβ immunotherapy.The Journal of pharmacology and experimental therapeutics · 2025
    Review
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91 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

13 authors at 3 institutions in 3 countries.

Daniela PuzzoDepartment of Pathology, Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University, New York, NY 10032, USA.
Lucia Privitera
Mauro Fa'
Agnieszka Staniszewski
Gakuji Hashimoto
Fahad Aziz
Mikako Sakurai
Elena M Ribe
Carol M Troy
Marc Mercken
Sonia S Jung
Agostino Palmeri
Ottavio Arancio
Columbia University · USUniversity of Catania · ITJanssen (Belgium) · BE

Funding

Downstream Regulators of Beta-Amyloid Induced Neuronal DeathR01NS043089 · NINDS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI TROY, CAROL M · 2001 to 2010
$2.2M
Endogenous amyloid-beta in synaptic function and memoryR01AG034248 · NIA · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI ARANCIO, OTTAVIO · 2010 to 2014
$1.7M
NIA NIH HHS AG034248NIA NIH HHS R01 AG034248NINDS NIH HHS R01 NS043089
6 · The paper itself

Abstract

objectiveThe goal of this study was to investigate the role of endogenous amyloid-β peptide (Aβ) in healthy brain.

methodsLong-term potentiation (LTP), a type of synaptic plasticity that is thought to be associated with learning and memory, was examined through extracellular field recordings from the CA1 region of hippocampal slices, whereas behavioral techniques were used to assess contextual fear memory and reference memory. Amyloid precursor protein (APP) expression was reduced through small interfering RNA (siRNA) technique.

resultsWe found that both antirodent Aβ antibody and siRNA against murine APP reduced LTP as well as contextual fear memory and reference memory. These effects were rescued by the addition of human Aβ₄₂, suggesting that endogenously produced Aβ is needed for normal LTP and memory. Furthermore, the effect of endogenous Aβ on plasticity and memory was likely due to regulation of transmitter release, activation of α7-containing nicotinic acetylcholine receptors, and Aβ₄₂ production.

interpretationEndogenous Aβ₄₂ is a critical player in synaptic plasticity and memory within the normal central nervous system. This needs to be taken into consideration when designing therapies aiming at reducing Aβ levels to treat Alzheimer disease.

Indexed as

Amyloid beta-PeptidesAmyloid beta-Protein PrecursorAnimalsAntibodiesBehavior, AnimalBiophysicsElectric StimulationEnzyme-Linked Immunosorbent AssayGene Expression RegulationHippocampusHumansLong-Term PotentiationMaleMaze LearningMemoryMiceAmyloid beta-Peptidesamyloid beta-protein (1-42)Amyloid beta-Protein PrecursorAntibodiesPeptide FragmentsRNA, Small Interfering

Identifiers

PMID21472769
PMCPMC4071456
OpenAlexW2006761942

What OpenQuestion holds

Textmetadata
LicenceTDM
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.