Evidence map›Paper›PMID 39455624›Full record

ArticleScientific reports2024

Phosphorylated tau in cerebrospinal fluid-derived extracellular vesicles in Alzheimer's disease: a pilot study.

Roman Sattarov, Megan Havers, Camilla Orbjörn, Erik Stomrud, Shorena Janelidze, Thomas Laurell, Niklas Mattsson-Carlgren

Abstract read
In one paragraph

Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Review
  2. Article
  3. Review
  4. Article
  5. Review
  6. Review
  7. Extracellular Vesicles in Tauopathies: Mechanisms and Applications.International journal of molecular sciences · 2026
    Review
  8. Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. 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

7 authors.

Roman SattarovClinical Memory Research Unit, Department of Clinical Sciences Malmö, Lund University, Lund, Sweden. Roman.Sattarov@med.lu.se.
Megan HaversDepartment of Biomedical Engineering, Lund University, Lund, Sweden. Megan.Havers@bme.lth.se.
Camilla OrbjörnClinical Memory Research Unit, Department of Clinical Sciences Malmö, Lund University, Lund, Sweden.
Erik StomrudClinical Memory Research Unit, Department of Clinical Sciences Malmö, Lund University, Lund, Sweden.
Shorena JanelidzeClinical Memory Research Unit, Department of Clinical Sciences Malmö, Lund University, Lund, Sweden.
Thomas LaurellDepartment of Biomedical Engineering, Lund University, Lund, Sweden.
Niklas Mattsson-CarlgrenClinical Memory Research Unit, Department of Clinical Sciences Malmö, Lund University, Lund, Sweden. Niklas.Mattsson-Carlgren@med.lu.se.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Alzheimer's disease (AD) is a debilitating neurodegenerative disorder characterized by brain aggregation of β-amyloid (Aβ) peptides and phosphorylated tau (P-tau) proteins. Extracellular vesicles (EVs) can be isolated and studied for potential roles in disease. While several studies have tested plasma-derived EVs in AD, few have analyzed EVs from cerebrospinal fluid (CSF), which are potentially more closely related to brain changes. This study included 20 AD patients and 20 cognitively unimpaired (CU) participants. Using a novel EV isolation method based on acoustic trapping, we isolated and purified EVs from minimal CSF volumes. EVs were lysed and analyzed by immunoassays for P-tau217 and P-tau181. Isolation was confirmed through transmission electron microscopy and the presence of EV-specific markers (CD9, CD63, CD81, ATP1A3). Nanoparticle tracking analysis revealed a high variance in EV distribution. AD patients exhibited increased P-tau181 and decreased P-tau217 in EVs, leading to a higher EV P-tau181/P-tau217 ratio compared to CU. No significant differences in EV counts or sizes were observed between AD and CU groups. This study is the first to use acoustic trapping to isolate EVs from CSF and demonstrates differential P-tau content in AD-derived EVs, warranting further research to understand the relationship between these EV changes and brain pathology.

Indexed as

Alzheimer DiseaseExtracellular Vesiclestau ProteinsAgedAged, 80 and overBiomarkersFemaleHumansMaleMiddle AgedPhosphorylationPilot ProjectsBiomarkersMAPT protein, humantau ProteinsAcoustic trappingAlzheimer’s diseaseBiomarkersExtracellular vesiclesP-tau181P-tau217

Identifiers

PMID39455624
PMCPMC11511998

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Registered trials

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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.