Evidence map›Paper›PMID 34295239›Full record

ArticleFrontiers in aging neuroscience2021

Cerebrospinal Fluid of Patients With Alzheimer's Disease Contains Increased Percentages of Synaptophysin-Bearing Microvesicles.

Janine Utz, Judith Berner, Luis Enrique Muñoz, Timo Jan Oberstein, Johannes Kornhuber, Martin Herrmann, Juan Manuel Maler, Philipp Spitzer

Open access · goldAbstract read
In one paragraph

Article in Frontiers in aging neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.1field-weighted citation impact, top 23% 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

13 citing papers in PubMed, 26 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Review
  6. Review
  7. Review
  8. Magnolol acts as a neurorestorative agent in an AExperimental and therapeutic medicine · 2025
    Article
  9. Article
  10. Review
  11. Article
  12. Antioxidants (Basel, Switzerland) · 2023
    Article
  13. Choline supplements: An update.Frontiers in endocrinology · 2023
    Review
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

8 authors at 1 institution in 1 country.

Janine UtzDepartment of Psychiatry and Psychotherapy, Friedrich-Alexander-University of Erlangen-Nuremberg (FAU), Erlangen, Germany.
Judith BernerDepartment of Psychiatry and Psychotherapy, Friedrich-Alexander-University of Erlangen-Nuremberg (FAU), Erlangen, Germany.
Luis Enrique MuñozDepartment of Internal Medicine, Friedrich-Alexander-University of Erlangen-Nuremberg (FAU), Erlangen, Germany.
Timo Jan ObersteinDepartment of Psychiatry and Psychotherapy, Friedrich-Alexander-University of Erlangen-Nuremberg (FAU), Erlangen, Germany.
Johannes KornhuberDepartment of Psychiatry and Psychotherapy, Friedrich-Alexander-University of Erlangen-Nuremberg (FAU), Erlangen, Germany.
Martin HerrmannDepartment of Internal Medicine, Friedrich-Alexander-University of Erlangen-Nuremberg (FAU), Erlangen, Germany.
Juan Manuel MalerDepartment of Psychiatry and Psychotherapy, Friedrich-Alexander-University of Erlangen-Nuremberg (FAU), Erlangen, Germany.
Philipp SpitzerDepartment of Psychiatry and Psychotherapy, Friedrich-Alexander-University of Erlangen-Nuremberg (FAU), Erlangen, Germany.
Friedrich-Alexander-Universität Erlangen-Nürnberg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionIn Alzheimer's disease, the severity of symptoms is linked to a loss of synaptic density and the spread of pathologically hyperphosphorylated tau. The established cerebrospinal fluid markers Aβ, tau and phospho-tau reflect the histopathological hallmarks of Alzheimer's disease but do not indicate disease progression. Such markers are of special interest, especially for trials of disease modifying drugs. Microvesicles are produced by stressed cells and reflect part of the metabolism of their cells of origin. Therefore, we investigated microvesicles of neuronal origin in cerebrospinal fluid. MATERIALS AND

methodsWe used flow cytometry to analyze microvesicles carrying tau, phospho-tau-Thr181, phospho-tau-Ser202Thr205, synaptophysin, and SNAP-25 in the cerebrospinal fluid of 19 patients with Alzheimer's disease and 15 non-inflammatory neurological disease controls.

resultsThe percentages of synaptophysin-bearing microvesicles were significantly higher in the cerebrospinal fluid of patients with Alzheimer's disease than in the CSF of non-inflammatory neurological disease controls. Tau, phospho-tau-Thr181, phospho-tau-Ser202Thr205, and SNAP-25 did not differ between the groups. The percentages of synaptophysin-bearing vesicles distinguished patients with Alzheimer's disease from the controls (AUC = 0.81).

conclusionThe loss of synapses in Alzheimer's disease may be reflected by synaptophysin-bearing microvesicles in the cerebrospinal fluid. Future studies are needed to investigate the possibility of using these MVs as a marker to determine the activity of Alzheimer's disease.

Indexed as

Alzheimer’s diseasebiomarkercerebrospinal fluidextracellular vesiclesmicrovesiclesynaptic losssynaptophysintau

Identifiers

PMID34295239
PMCPMC8290128
OpenAlexW3178593274

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.