Evidence map›Paper›PMID 37520380›Full record

ArticleFrontiers in microbiology2023

Amplification of microbial DNA from bacterial extracellular vesicles from human placenta.

Ramkumar Menon, Kamil Khanipov, Enkhtuya Radnaa, Esha Ganguly, Giovana Fernanda Cosi Bento, Rheanna Urrabaz-Garza, Ananth Kumar Kammala, Jerome Yaklic, Richard Pyles, George Golovko and 1 more

Open access · goldAbstract read
In one paragraph

Article in Frontiers in microbiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.8field-weighted citation impact, top 6% 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

21 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
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  14. Scoping Review of Microbiota Dysbiosis and Risk of Preeclampsia.American journal of reproductive immunology (New York, N.Y. : 1989) · 2024
    Article
  15. Nutraceuticals in Pregnancy: A Special Focus on Probiotics.International journal of molecular sciences · 2024
    Review
  16. Article
  17. Review
  18. Microbial Extracellular Vesicles in Host-Microbiota Interactions.Results and problems in cell differentiation · 2024
    Review
  19. Less is more! Low amount ofFrontiers in immunology · 2024
    Article
  20. 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

11 authors at 2 institutions in 2 countries.

Ramkumar MenonDivision of Basic Science and Translational Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, United States.
Kamil KhanipovDepartment of Pharmacology and Toxicology, The University of Texas Medical Branch at Galveston, Galveston, TX, United States.
Enkhtuya RadnaaDivision of Basic Science and Translational Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, United States.
Esha GangulyDivision of Basic Science and Translational Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, United States.
Giovana Fernanda Cosi BentoDivision of Basic Science and Translational Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, United States.
Rheanna Urrabaz-GarzaDivision of Basic Science and Translational Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, United States.
Ananth Kumar KammalaDivision of Basic Science and Translational Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, United States.
Jerome YaklicDivision of Basic Science and Translational Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, United States.
Richard PylesDepartment of Pediatrics, The University of Texas Medical Branch at Galveston, Galveston, TX, United States.
George GolovkoDepartment of Pharmacology and Toxicology, The University of Texas Medical Branch at Galveston, Galveston, TX, United States.
Ourlad Alzeus G TantengcoDivision of Basic Science and Translational Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, United States.
The University of Texas Medical Branch at Galveston · USDe La Salle University · PH

Funding

Intercellular interactions define cell migrations and transitions that maintain fetal membrane homeostasisR01HD100729 · NICHD · UNIVERSITY OF TEXAS MED BR GALVESTON · PI HAN, ARUM, MENON, RAMKUMAR · 2020 to 2024
$2.6M
Developing extracellular vesicle based therapeutics against pre-term birth through the use of maternal-fetal interface on a chipUG3TR003283 · NCATS · TEXAS ENGINEERING EXPERIMENT STATION · PI HAN, ARUM, MENON, RAMKUMAR · 2020 to 2021
$1.5M
NCATS NIH HHS UG3 TR003283NICHD NIH HHS R01 HD100729
6 · The paper itself

Abstract

Introduction: The placenta is essential for fetal growth and survival and maintaining a successful pregnancy. The sterility of the placenta has been challenged recently; however, the presence of a placental microbiome has been controversial. We tested the hypothesis that the bacterial extracellular vesicles (BEVs) from Gram-negative bacteria as an alternate source of microbial DNA, regardless of the existence of a microbial community in the placenta. Methods: Placentae from the term, not in labor Cesareans deliveries, were used for this study, and placental specimens were sampled randomly from the fetal side. We developed a protocol for the isolation of BEVs from human tissues and this is the first study to isolate the BEVs from human tissue and characterize them. Results: The median size of BEVs was 130-140 nm, and the mean concentration was 1.8-5.5 × 10 Conclusion: We conclude that the BEVs are normal constituents during pregnancy and likely reach the placenta through hematogenous spread from maternal body sites that harbor microbiome. Their presence may result in a low-grade localized inflammation to prime an antigen response in the placenta; however, insufficient to cause a fetal inflammatory response and adverse pregnancy events. This study suggests that BEVs can confound placental microbiome studies, but their low biomass in the placenta is unlikely to have any immunologic impact.

Indexed as

bacterial outer membrane vesiclesEVSmetagenomicsparturitionplacentapregnancy

Identifiers

PMID37520380
PMCPMC10374210
OpenAlexW4384153567

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.