Evidence map›Paper›PMID 22399772›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2012

The secreted Wnt antagonist Dickkopf-1 is required for amyloid β-mediated synaptic loss.

Silvia A Purro, Ellen M Dickins, Patricia C Salinas

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 120 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
120citing papers in PubMed, 1 pooled it
8.4field-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

120 citing papers in PubMed, 1 synthesis or guideline pooled it, 195 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Exploring the Impact of 3-Pharmaceuticals (Basel, Switzerland) · 2025
    Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Wnt/β-catenin Signaling in Central Nervous System Regeneration.Advances in experimental medicine and biology · 2025
    Review
  15. The relationship between adult hippocampal neurogenesis and cognitive impairment in Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Review
  16. Review
  17. Bone-organ axes: bidirectional crosstalk.Military Medical Research · 2024
    Review
  18. Review
  19. Article
  20. Review

60 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

3 authors at 1 institution in 1 country.

Silvia A PurroDepartment of Cell and Developmental Biology, University College London, London WC1E 6BT, United Kingdom.
Ellen M Dickins
Patricia C Salinas
University College London · GB

Funding

Biotechnology and Biological Sciences Research CouncilWellcome Trust
6 · The paper itself

Abstract

Extensive evidence supports a central role for amyloid-β (Aβ) in the pathogenesis of Alzheimer's disease (AD). Synaptic loss mediated by Aβ in early stages of the disease might contribute to cognitive impairments. However, little is known about the mechanism by which Aβ induces the loss of synapses. The expression of the Wnt antagonist Dickkopf-1 (Dkk1) is increased in brains of AD patients and in AD transgenic mouse models, suggesting that dysfunction of Wnt signaling could contribute to AD pathology. Here we report that acute exposure to Aβ oligomers induces Dkk1 expression together with the loss of synaptic sites. Importantly, Dkk1-neutralizing antibodies suppress Aβ-induced synapse loss in mouse brain slices. In mature rat hippocampal neurons, Dkk1 decreases the number of synapses without affecting cell viability. Ultrastructural analyses revealed that Wnt blockade decreases the size of presynaptic and postsynaptic terminals. Time-lapse recordings of RFP-labeled stable synaptic sites demonstrate that Dkk1 induces the dispersal of synaptic components. These findings identify Dkk1 as a potential therapeutic target for the treatment of AD.

Indexed as

Amyloid beta-PeptidesAnimalsFemaleHippocampusIntercellular Signaling Peptides and ProteinsMaleMiceRatsSynapsesUp-RegulationWnt Signaling PathwayAmyloid beta-PeptidesDkk1 protein, ratIntercellular Signaling Peptides and Proteins

Identifiers

PMID22399772
PMCPMC6621056
OpenAlexW1963836337

What OpenQuestion holds

Textmetadata
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.