Evidence map›Paper›PMID 27317346›Full record

ArticleJournal of translational medicine2016

Exosome-like vesicles in uterine aspirates: a comparison of ultracentrifugation-based isolation protocols.

Irene Campoy, Lucia Lanau, Tatiana Altadill, Tamara Sequeiros, Silvia Cabrera, Montserrat Cubo-Abert, Assumpción Pérez-Benavente, Angel Garcia, Salvador Borrós, Anna Santamaria and 6 more

Open access · goldAbstract readComparative Study
In one paragraph

Article in Journal of translational medicine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 2 pooled it
4.4field-weighted citation impact, top 5% 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

40 citing papers in PubMed, 2 syntheses or guidelines pooled it, 85 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Eutopic Endometrium Immune Changes Involved in Development and Progression of Endometriosis: A Review.Medical science monitor : international medical journal of experimental and clinical research · 2026
    Review
  4. Article
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  11. Rapid isolation method for extracellular vesicles based on FeFrontiers in bioengineering and biotechnology · 2024
    Article
  12. Extracellular Vesicles as Drug Transporters.International journal of molecular sciences · 2023
    Review
  13. Article
  14. Article
  15. Review
  16. Review
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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

16 authors at 5 institutions in 1 country.

Irene CampoyBiomedical Research Group in Gynecology, Vall Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.
Lucia LanauBiomedical Research Group in Gynecology, Vall Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.
Tatiana AltadillBiomedical Research Group in Gynecology, Vall Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.
Tamara SequeirosBiomedical Research Group in Urology, Vall Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.
Silvia CabreraDepartment of Gynecology, Vall Hebron University Hospital, Barcelona, Spain.
Montserrat Cubo-AbertDepartment of Gynecology, Vall Hebron University Hospital, Barcelona, Spain.
Assumpción Pérez-BenaventeDepartment of Gynecology, Vall Hebron University Hospital, Barcelona, Spain.
Angel GarciaPathology Department, Vall Hebron University Hospital, Barcelona, Spain.
Salvador BorrósGrup d'Enginyeria de Materials (GEMAT), Institut Químic de Sarrià, Universitat Ramon Llull, Barcelona, Spain.
Anna SantamariaBiomedical Research Group in Gynecology, Vall Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.
Jordi PonceDepartment of Gynecology, Bellvitge Teaching Hospital, Barcelona, Spain.
Xavier Matias-GuiuDepartment of Pathology and Molecular Genetics/Oncologic Pathology Group, University Hospital Arnau de Vilanova, University of Lleida, IRBLleida, Lleida, Spain.
Jaume ReventósBiomedical Research Group in Gynecology, Vall Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.
Antonio Gil-MorenoBiomedical Research Group in Gynecology, Vall Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.
Marina RigauBiomedical Research Group in Gynecology, Vall Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.
Eva ColasBiomedical Research Group in Gynecology, Vall Hebron Institute of Research (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain. ecolas@irblleida.cat.ORCID 0000-0002-4439-4254
Universitat Autònoma de Barcelona · ESVall d'Hebron Hospital Universitari · ESBellvitge University Hospital · ESInstitut Químic de Sarrià · ESUniversitat de Lleida · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundUterine aspirates are used in the diagnostic process of endometrial disorders, yet further applications could emerge if its complex milieu was simplified. Exosome-like vesicles isolated from uterine aspirates could become an attractive source of biomarkers, but there is a need to standardize isolation protocols. The objective of the study was to determine whether exosome-like vesicles exist in the fluid fraction of uterine aspirates and to compare protocols for their isolation, characterization, and analysis.

methodsWe collected uterine aspirates from 39 pre-menopausal women suffering from benign gynecological diseases. The fluid fraction of 27 of those aspirates were pooled and split into equal volumes to evaluate three differential centrifugation-based procedures: (1) a standard protocol, (2) a filtration protocol, and (3) a sucrose cushion protocol. Characterization of isolated vesicles was assessed by electron microscopy, nanoparticle tracking analysis and immunoblot. Specifically for RNA material, we evaluate the effect of sonication and RNase A treatment at different steps of the protocol. We finally confirmed the efficiency of the selected methods in non-pooled samples.

resultsAll protocols were useful to isolate exosome-like vesicles. However, the Standard procedure was the best performing protocol to isolate exosome-like vesicles from uterine aspirates: nanoparticle tracking analysis revealed a higher concentration of vesicles with a mode of 135 ± 5 nm, and immunoblot showed a higher expression of exosome-related markers (CD9, CD63, and CD81) thus verifying an enrichment in this type of vesicles. RNA contained in exosome-like vesicles was successfully extracted with no sonication treatment and exogenous nucleic acids digestion with RNaseA, allowing the analysis of the specific inner cargo by Real-Time qPCR.

conclusionWe confirmed the existence of exosome-like vesicles in the fluid fraction of uterine aspirates. They were successfully isolated by differential centrifugation giving sufficient proteomic and transcriptomic material for further analyses. The Standard protocol was the best performing procedure since the other two tested protocols did not ameliorate neither yield nor purity of exosome-like vesicles. This study contributes to establishing the basis for future comparative studies to foster the field of biomarker research in gynecology.

Indexed as

ExosomesFemaleHumansRNASuctionUltracentrifugationUterusRNABiomarkerEndometrial biopsyExosome-like vesiclesExosomesExosomes isolation protocolsExtracellular vesiclesGynecological disordersMicrovesiclesRNAUterine aspirates

Identifiers

PMID27317346
PMCPMC4912787
OpenAlexW2440935561

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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.