Evidence map›Paper›PMID 26671889›Full record

ArticleThe Journal of infectious diseases2016

Placental Infection With Ureaplasma species Is Associated With Histologic Chorioamnionitis and Adverse Outcomes in Moderately Preterm and Late-Preterm Infants.

Emma L Sweeney, Suhas G Kallapur, Tate Gisslen, Donna S Lambers, Claire A Chougnet, Sally-Anne Stephenson, Alan H Jobe, Christine L Knox

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of infectious diseases, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed, 3 pooled it
5.2field-weighted citation impact, top 4% 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

51 citing papers in PubMed, 3 syntheses or guidelines pooled it, 90 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. International journal of molecular sciences · 2026
    Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Detection ofFrontiers in cellular and infection microbiology · 2025
    Article
  11. Article
  12. Intrauterine Shaping of Fetal Microbiota.Journal of clinical medicine · 2024
    Review
  13. An unexpected pathogen in the amniotic fluid of a patient with chorioamnionitis.Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia · 2024
    Article
  14. Article
  15. Article
  16. Article
  17. A Higher Abundance ofMicroorganisms · 2023
    Article
  18. Review
  19. Article
  20. PlacingChildren (Basel, Switzerland) · 2023
    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

8 authors at 3 institutions in 2 countries.

Emma L SweeneyInstitute of Health and Biomedical Innovation, Biomedical Sciences, Faculty of Health, Queensland University of Technology, Brisbane, Australia.
Suhas G KallapurDivision of Neonatology.
Tate GisslenDivision of Neonatology.
Donna S LambersDivision of Maternal and Fetal Medicine.
Claire A ChougnetDivision of Immunobiology, Cincinnati Children's Hospital Medical Centre, Ohio.
Sally-Anne StephensonInstitute of Health and Biomedical Innovation, Biomedical Sciences, Faculty of Health, Queensland University of Technology, Brisbane, Australia.
Alan H JobeDivision of Neonatology.
Christine L KnoxInstitute of Health and Biomedical Innovation, Biomedical Sciences, Faculty of Health, Queensland University of Technology, Brisbane, Australia.
Queensland University of Technology · AUCincinnati Children's Hospital Medical Center · USSociety for Maternal-Fetal Medicine · US

Funding

Late Preterm Birth, Ureaplasma Species and Childhood Lung DiseaseR01HL097064 · NHLBI · CINCINNATI CHILDRENS HOSP MED CTR · PI JOBE, ALAN H, KALLAPUR, SUHAS · 2009 to 2012
$2.0M
NHLBI NIH HHS 1R01HL097064-105956
6 · The paper itself

Abstract

objectiveThe human Ureaplasma species are the microbes most frequently isolated from placentae of women who deliver preterm. The role of Ureaplasma species has been investigated in pregnancies at <32 weeks of gestation, but currently no studies have determined the prevalence of ureaplasmas in moderately preterm and late-preterm (hereafter, "moderate/late preterm") infants, the largest cohort of preterm infants.

methodsWomen delivering moderate/late preterm infants (n = 477) and their infants/placentae (n = 535) were recruited, and swab specimens of chorioamnion tissue, chorioamnion tissue specimens, and cord blood specimens were obtained at delivery. Swab and tissue specimens were cultured and analyzed by 16S ribosomal RNA polymerase chain reaction (PCR) for the presence of microorganisms, while cord blood specimens were analyzed for the presence of cytokines, chemokines, and growth factors.

resultsWe detected microorganisms in 10.6% of 535 placentae (443 were delivered late preterm and 92 were delivered at term). Significantly, Ureaplasma species were the most prevalent microorganisms, and their presence alone was associated with histologically confirmed chorioamnionitis in moderate/late preterm and term placentae (P < .001). The presence of ureaplasmas in the chorioamnion was also associated with elevated levels of granulocyte colony-stimulating factor (P = .02).

conclusionsThese findings have important implications for infection and adverse pregnancy outcomes throughout gestation and should be of major consideration for obstetricians and neonatologists.

Indexed as

AdolescentAdultChorioamnionitisCytokinesFemaleHumansInfant, NewbornInfant, PrematurePlacenta DiseasesPregnancyPregnancy Complications, InfectiousPregnancy OutcomePremature BirthUreaplasma InfectionsYoung AdultCytokineschorioamnionitiscord bloodcytokinesinfectionplacentapregnancy outcomespreterm birthUreaplasma species

Identifiers

PMID26671889
PMCPMC4799668
OpenAlexW2333095042

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.