Evidence map›Paper›PMID 39475191›Full record

ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2024

SV2A PET shows hippocampal synaptic loss in cognitively unimpaired APOE ε4/ε4 homozygotes.

Anniina Snellman, Jouni Tuisku, Mikko Koivumäki, Saara Wahlroos, Richard Aarnio, Johan Rajander, Mira Karrasch, Laura L Ekblad, Juha O Rinne

Abstract read
In one paragraph

Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
–field-weighted citation impact
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

10 citing papers in PubMed.

  1. Review
  2. Observational
  3. Article
  4. Plasma Proteomic Analysis ofmedRxiv : the preprint server for health sciences · 2026
    Article
  5. Review
  6. Article
  7. Article
  8. Impact ofProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  9. Article
  10. SV2A PET shows hippocampal synaptic loss in cognitively unimpaired APOE ε4/ε4 homozygotes.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Article
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

9 authors.

Anniina SnellmanTurku PET Centre, University of Turku, Turku, Finland.ORCID 0000-0001-6191-0954
Jouni TuiskuTurku PET Centre, University of Turku, Turku, Finland.
Mikko KoivumäkiTurku PET Centre, University of Turku, Turku, Finland.
Saara WahlroosTurku PET Centre, University of Turku, Turku, Finland.
Richard AarnioTurku PET Centre, University of Turku, Turku, Finland.
Johan RajanderAccelerator Laboratory, Turku PET Centre, Åbo Akademi University, Turku, Finland.
Mira KarraschDepartment of Psychology, Åbo Akademi University, Turku, Finland.
Laura L EkbladTurku PET Centre, University of Turku, Turku, Finland.
Juha O RinneTurku PET Centre, University of Turku, Turku, Finland.

Funding

Emil Aaltonen FoundationFinnish Governmental Research Funding (VTR)Orion Research FoundationPaulo FoundationResearch Council of Finland 341059Sigrid Juselius Foundation
6 · The paper itself

Abstract

introductionWe investigated hippocampal synaptic density using synaptic vesicle 2A positron emission tomography (PET), and its association with amyloid beta (Aβ) and cognitive performance in healthy apolipoprotein E (APOE) ε4 carriers.

methodsSynaptic density was assessed in 46 individuals (APOE ε4/ε4 n = 14; APOE ε3/ε4 n = 16; APOE ε3/ε3 n = 16) with [

resultsHippocampal synaptic density was different among the APOE groups (P DISCUSSION: Hippocampal synaptic loss emerges early in the AD continuum and is measurable in vivo in cognitively unimpaired high-risk individuals. HIGHLIGHTS: Synaptic density was studied in vivo in healthy older adults using [

Indexed as

Apolipoprotein E4HippocampusPositron-Emission TomographySynapsesAgedAmyloid beta-PeptidesCognitionFemaleHomozygoteHumansMaleMembrane GlycoproteinsMiddle AgedNerve Tissue ProteinsAmyloid beta-PeptidesApolipoprotein E4Membrane GlycoproteinsNerve Tissue ProteinsSV2A protein, human[11C]UCB‐JAlzheimer's diseaseamyloid betaapolipoprotein Ebiomarkercognitionhippocampuspositron emission tomographypreclinicalsynaptic densitysynaptic vesicle 2A

Identifiers

PMID39475191
PMCPMC11667521

What OpenQuestion holds

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LicenceCC BY-NC-ND
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.