Evidence map›Paper›PMID 38073390›Full record

SynthesisJournal of Alzheimer's disease : JAD2024

A Meta-Analysis on Presynaptic Changes in Alzheimer's Disease.

Anne Anschuetz, Karima Schwab, Charles R Harrington, Claude M Wischik, Gernot Riedel

Open access · hybridAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Journal of Alzheimer's disease : JAD, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
2.3field-weighted citation impact, top 11% 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

7 citing papers in PubMed, 13 citations in OpenAlex.

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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

5 authors at 1 institution in 1 country.

Anne AnschuetzSchool of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK.
Karima SchwabSchool of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK.
Charles R HarringtonSchool of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK.
Claude M WischikSchool of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK.
Gernot RiedelSchool of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK.
University of Aberdeen · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA key aspect of synaptic dysfunction in Alzheimer's disease (AD) is loss of synaptic proteins. Previous publications showed that the presynaptic machinery is more strongly affected than postsynaptic proteins. However, it has also been reported that presynaptic protein loss is highly variable and shows region- and protein-specificity.

objectiveThe objective of this meta-analysis was to provide an update on the available literature and to further characterize patterns of presynaptic protein loss in AD.

methodsSystematic literature search was conducted for studies published between 2015-2022 which quantified presynaptic proteins in postmortem tissue from AD patients and healthy controls. Three-level random effects meta-analyses of twenty-two identified studies was performed to characterize overall presynaptic protein loss and changes in specific regions, proteins, protein families, and functional categories.

resultsMeta-analysis confirmed overall loss of presynaptic proteins in AD patients. Subgroup analysis revealed region specificity of protein loss, with largest effects in temporal and frontal cortex. Results concerning different groups of proteins were also highly variable. Strongest and most consistently affected was the family of synaptosome associated proteins, especially SNAP25. Among the most severely affected were proteins regulating dense core vesicle exocytosis and the synaptic vesicle cycle.

conclusionsResults confirm previous literature related to presynaptic protein loss in AD patients and provide further in-depth characterization of most affected proteins and presynaptic functions.

Indexed as

Alzheimer DiseaseHumansPresynaptic TerminalsProteinsProteinsAlzheimer’s diseasemeta-analysispresynaptic terminalssynaptic vesicles

Identifiers

PMID38073390
PMCPMC10789360
OpenAlexW4389474996

What OpenQuestion holds

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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.