Evidence map›Paper›PMID 27884950›Full record

ArticleReproductive sciences (Thousand Oaks, Calif.)2017

Neutrophil Extracellular Traps in the Amniotic Cavity of Women with Intra-Amniotic Infection: A New Mechanism of Host Defense.

Nardhy Gomez-Lopez, Roberto Romero, Yi Xu, Derek Miller, Ronald Unkel, Majid Shaman, Suzanne M Jacques, Bogdan Panaitescu, Valeria Garcia-Flores, Sonia S Hassan

Open access · bronzeAbstract read
In one paragraph

Article in Reproductive sciences (Thousand Oaks, Calif.), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 1 pooled it
4.8field-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

52 citing papers in PubMed, 1 synthesis or guideline pooled it, 64 citations in OpenAlex.

  1. Pooled it
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  9. Exosomal Delivery of Interleukin-10 Reduces Infection-Associated Inflammation in a 3D-Printed Model of a Humanized Feto-Maternal Interface.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
  10. Article
  11. Factors of Fetal Origin in the Regulation of Labor Initiation and Preterm Birth.Maternal-fetal medicine (Wolters Kluwer Health, Inc.) · 2023
    Article
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  18. Pregnancy tailors endotoxin-induced monocyte and neutrophil responses in the maternal circulation.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2022
    Article
  19. 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

10 authors at 3 institutions in 1 country.

Nardhy Gomez-Lopez1 Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, MD, USA and Detroit, MI, USA.
Roberto Romero1 Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, MD, USA and Detroit, MI, USA.
Yi Xu1 Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, MD, USA and Detroit, MI, USA.
Derek Miller1 Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, MD, USA and Detroit, MI, USA.
Ronald Unkel1 Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, MD, USA and Detroit, MI, USA.
Majid Shaman1 Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, MD, USA and Detroit, MI, USA.
Suzanne M Jacques1 Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, MD, USA and Detroit, MI, USA.
Bogdan Panaitescu1 Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, MD, USA and Detroit, MI, USA.
Valeria Garcia-Flores1 Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, MD, USA and Detroit, MI, USA.
Sonia S Hassan1 Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, MD, USA and Detroit, MI, USA.
Eunice Kennedy Shriver National Institute of Child Health and Human Development · USUnited States Department of Health and Human Services · USHutzel Women's Hospital · US

Funding

The Role Of Subclinical Infection And Cytokines In Preterm ParturitionZIAHD002400 · NICHD · EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH & HUMAN DEVELOPMENT · PI ROMERO, ROBERTO · 2009 to 2025
$254.4M
NICHD NIH HHS HHSN275201300006C
6 · The paper itself

Abstract

objectiveNeutrophil extracellular traps (NETs) control microbial infections through their antimicrobial activities attributed to DNA, histones, granules, and cytoplasmic proteins (eg, elastase). Intra-amniotic infection is characterized by the influx of neutrophils into the amniotic cavity; therefore, the aim of this study was to determine whether amniotic fluid neutrophils form NETs in this inflammatory process.

methodsAmniotic fluid samples from women with intra-amniotic infection (n = 15) were stained for bacteria detection using fluorescent dyes. Amniotic fluid neutrophils were purified by filtration. As controls, neutrophils from maternal blood samples (n = 3) were isolated by density gradients. Isolated neutrophils were plated onto glass cover slips for culture with and without 100 nM of phorbol-12-myristate-13-acetate (PMA). NET formation was assessed by 4',6-diamidino-2-phenylindole (DAPI) staining and scanning electron microscopy. Different stages of NET formation were visualized using antibodies against elastase and histone H3, in combination with DAPI staining, by confocal microscopy. Finally, maternal or neonatal neutrophils were added to amniotic fluid samples from women without intra-amniotic infection (n = 4), and NET formation was evaluated by DAPI staining.

results(1) NETs were present in the amniotic fluid of women with intra-amniotic infection; (2) all of the amniotic fluid samples had detectable live and dead bacteria associated with the presence of NETs; (3) in contrast to neutrophils from the maternal circulation, amniotic fluid neutrophils did not require PMA stimulation to form NETs; (4) different stages of NET formation were observed by co-localizing elastase, histone H3, and DNA in amniotic fluid neutrophils; and (5) neither maternal nor neonatal neutrophils form NETs in the amniotic fluid of women without intra-amniotic infection.

conclusionNETs are detectable in the amniotic fluid of women with intra-amniotic infection.

Indexed as

AdultAmnionAmniotic FluidBacterial InfectionsExtracellular TrapsFemaleHumansInterleukin-6NeutrophilsPregnancyYoung AdultInterleukin-6cytokinesfetal inflammatory responsefeverfunisitisinflammationintra-amniotic inflammationlabormicrobial invasion of the amniotic cavity (MIAC)neutrophilparturitionpregnancypreterm birthpreterm labor

Identifiers

PMID27884950
PMCPMC6343453
OpenAlexW2550287279

What OpenQuestion holds

Textmetadata
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.