Evidence map›Paper›PMID 34065021›Full record

ArticleMethods and protocols2021

ExoProK: A Practical Method for the Isolation of Small Extracellular Vesicles from Pleural Effusions.

Dionysios Antonopoulos, Irene Tsilioni, Sophia Tsiara, Eirini Moustaka, Spyridon Ladias, Garyfallia Perlepe, Theoharis C Theoharides, Konstantinos I Gourgoulianis, Nikolaos A A Balatsos

Open access · goldAbstract read
In one paragraph

Article in Methods and protocols, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.2field-weighted citation impact, top 48% 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

2 citing papers in PubMed, 5 citations in OpenAlex.

  1. Exosome isolation based on polyethylene glycol (PEG): a review.Molecular and cellular biochemistry · 2025
    Review
  2. 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 at 2 institutions in 2 countries.

Dionysios AntonopoulosDepartment of Biochemistry and Biotechnology, University of Thessaly, Viopolis, 415 00 Larissa, Greece.
Irene TsilioniDepartment of Immunology, Tufts University School of Medicine, 136 Harrison Avenue, Suite J304, Boston, MA 02111, USA.ORCID 0000-0003-1340-8657
Sophia TsiaraDepartment of Biochemistry and Biotechnology, University of Thessaly, Viopolis, 415 00 Larissa, Greece.
Eirini MoustakaDepartment of Biochemistry and Biotechnology, University of Thessaly, Viopolis, 415 00 Larissa, Greece.
Spyridon LadiasRespiratory Medicine Department, Faculty of Medicine, University of Thessaly, Viopolis, 411 10 Larissa, Greece.
Garyfallia PerlepeRespiratory Medicine Department, Faculty of Medicine, University of Thessaly, Viopolis, 411 10 Larissa, Greece.
Theoharis C TheoharidesDepartment of Immunology, Tufts University School of Medicine, 136 Harrison Avenue, Suite J304, Boston, MA 02111, USA.
Konstantinos I GourgoulianisRespiratory Medicine Department, Faculty of Medicine, University of Thessaly, Viopolis, 411 10 Larissa, Greece.ORCID 0000-0001-9541-1010
Nikolaos A A BalatsosDepartment of Biochemistry and Biotechnology, University of Thessaly, Viopolis, 415 00 Larissa, Greece.ORCID 0000-0002-1146-1174
University of Thessaly · GRTufts University · US

Funding

Hellenic Thoracic Society (4392), Postgraduate programs "Applications of Molecular Biology- Genetics - Diagnostic Biomarkers" (UTH/RC 3817) of the Department of Biochemistry and Biotechnology, University of Thessaly and "Primary Health Care" (UTH/RC 3323) University of Thessaly Research Committee Grant Numbers: 4392, 3817, 3323
6 · The paper itself

Abstract

Extracellular vesicles (EVs) are cell-secreted, lipid membrane-enclosed nanoparticles without functional nucleus. EV is a general term that includes various subtypes of particles named microvesicles, microparticles, ectosomes or exosomes. EVs transfer RNA, DNA and protein cargo between proximal and distant cells and tissues, thus constituting an organism-wide signal transduction network. Pathological tissues secrete EVs that differ in their cargo composition compared to their healthy counterparts. The detection of biomarkers in EVs from biological fluids may aid the diagnosis of disease and/or monitor its progression in a minimally invasive manner. Among biological fluids, pleural effusions (PEs) are integrated to clinical practice, as they accompany a wide variety of lung disorders. Due to the proximity with the pleura and the lungs, PEs are expected to be especially enriched in EVs that originate from diseased tissues. However, PEs are among the least studied biofluids regarding EV-specialized isolation methods and related biomarkers. Herein, we describe a practical EV isolation method from PEs for the screening of EV RNA biomarkers in clinical routine. It is based on a Proteinase K treatment step to digest contaminants prior to standard polyethylene-glycol precipitation. The efficiency of the method was confirmed by transmission electron microscopy, nanoparticle tracking analysis and Western blot. The reliability and sensitivity of the method towards the detection of EV-enriched RNA biomarkers from multiple PEs was also demonstrated.

Indexed as

exosomesextracellular vesiclespleural effusionproteinase KRNA biomarkers

Identifiers

PMID34065021
PMCPMC8163155
OpenAlexW3163211449

What OpenQuestion holds

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LicenceCC BY
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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.