Evidence map›Paper›PMID 22967004›Full record

ArticleAmerican journal of reproductive immunology (New York, N.Y. : 1989)2013

Bacterial modulation of human fetal membrane Toll-like receptor expression.

Vikki M Abrahams, Julie A Potter, Geeta Bhat, Morgan R Peltier, George Saade, Ramkumar Menon

Open access · greenAbstract read
In one paragraph

Article in American journal of reproductive immunology (New York, N.Y. : 1989), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
2.9field-weighted citation impact, top 10% 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

38 citing papers in PubMed, 56 citations in OpenAlex.

  1. Article
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  4. Clinical chorioamnionitis at term is characterized by changes in the plasma concentration of CHCHD2/MNRR1, a mitochondrial protein.The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians · 2023
    Article
  5. Article
  6. Infection and immunity · 2023
    Review
  7. Review
  8. Microorganisms · 2022
    Article
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  10. Review
  11. Article
  12. Article
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  15. 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

6 authors at 3 institutions in 1 country.

Vikki M AbrahamsDepartment of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, New Haven, CT 06510, USA. vikki.abrahams@yale.edu
Julie A Potter
Geeta Bhat
Morgan R Peltier
George Saade
Ramkumar Menon
The University of Texas Medical Branch at Galveston · USYale University · USWinthrop-University Hospital · US

Funding

Thrombin Effects on Decidual TLR ExpressionP01HD054713 · NICHD · YALE UNIVERSITY · PI MOR, GIL G · 2009 to 2013
$5.2M
Innate Immune Responses of Trophoblasts in PregnancyR01HD049446 · NICHD · YALE UNIVERSITY · PI ABRAHAMS, VIKKI M · 2005 to 2015
$3.0M
Diversity & racial disparity in fetal membrane cytokine signature during infectioR03HD067446 · NICHD · UNIVERSITY OF TEXAS MED BR GALVESTON · PI MENON, RAMKUMAR · 2011 to 2012
$169k
NICHD NIH HHS P01 HD054713NICHD NIH HHS P01HD054713NICHD NIH HHS R01 HD049446NICHD NIH HHS R01HD049446NICHD NIH HHS R03 HD067446NICHD NIH HHS R03HD067446
6 · The paper itself

Abstract

problemPreterm premature rupture of fetal membranes (pPROM) occurs in 30-40% of spontaneous preterm births (PTB) and is associated with intra-amniotic infection and inflammation. The membranes may sense and respond to microbes via Toll-like receptors (TLRs); however, little is known about their expression and regulation in this tissue. The objective of this study was to evaluate the expression of TLRs 1-10 in fetal membranes after exposure to pathogens associated with intra-amniotic infection and PTB. METHOD OF STUDY: Normal human term fetal membrane explants were exposed to various bacteria. After 24 hrs, RNA was extracted and quantitative RT-PCR performed for TLRs1-10.

resultsTreatment of fetal membranes with Mycoplasma hominis increased expression of TLR4, TLR6, and TLR8 mRNA. Ureaplasma parvum upregulated TLR8 mRNA, and Porphyromonas gingivalis significantly increased fetal membrane TLR7 expression. In contrast, treatment with Gram-negative Escherichia coli (and its cell wall component lipopolysaccharide) downregulated TLR10 mRNA. No effect was detected for Ureaplasma urealyticum, Gardnerella vaginalis, or Group B Streptococcus.

conclusionThese findings demonstrate that different types of bacteria have distinct effects on fetal membrane TLR expression patterns. Moreover, these findings highlight the disparity of fetal membrane responses to infection and thus suggest heterogeneity in the mechanisms by which infection-associated pregnancy complications, such as pPROM and PTB, arise.

Indexed as

Bacterial InfectionsCells, CulturedEscherichia coliExtraembryonic MembranesFemaleGardnerella vaginalisGene Expression RegulationHumansLipopolysaccharidesMycoplasma hominisOrgan Culture TechniquesPorphyromonas gingivalisPregnancyPregnancy Complications, InfectiousPremature BirthPremature Rupture of Fetal MembranesLipopolysaccharidesToll-Like Receptors

Identifiers

PMID22967004
PMCPMC3535068
OpenAlexW1965629977

What OpenQuestion holds

Textmetadata
LicenceTDM
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.