Evidence map›Paper›PMID 25048443›Full record

ArticleBMC pregnancy and childbirth2014

Prostaglandin pathway gene expression in human placenta, amnion and choriodecidua is differentially affected by preterm and term labour and by uterine inflammation.

Robert J Phillips, Michel A Fortier, Andrés López Bernal

Open access · goldAbstract read
In one paragraph

Article in BMC pregnancy and childbirth, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
2.6field-weighted citation impact, top 11% 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

37 citing papers in PubMed, 69 citations in OpenAlex.

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  20. TBX2, a Novel Regulator of Labour.Medicina (Kaunas, Lithuania) · 2021
    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

3 authors at 2 institutions in 2 countries.

Robert J Phillips
Michel A Fortier
Andrés López BernalHenry Wellcome Laboratories for Integrative Neuroscience and Endocrinology, School of Clinical Sciences, University of Bristol, Dorothy Hodgkin Building, Bristol BS1 3NY, UK. a.lopezbernal@bristol.ac.uk.
University of Bristol · GBUniversité Laval · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundElucidation of the biochemical pathways involved in activation of preterm and term human labour would facilitate the development of effective management and inform judgements regarding the necessity for preterm tocolysis and post-term induction. Prostaglandins act at all stages of human reproduction, and are potentially activators of labour.

methodsExpression of 15 genes involved in prostaglandin synthesis, transport and degradation was measured by qPCR using tissue samples from human placenta, amnion and choriodecidua at preterm and full-term vaginal and caesarean delivery. Cellular localisation of eight prostaglandin pathway proteins was determined by immunohistochemistry.

resultsExpression of prostaglandin pathway genes was differentially affected by factors including gestational age at delivery, and the incidence and duration of labour. Chorioamnionitis/deciduitis was associated with upregulation of PTGS2 (prostaglandin-endoperoxide synthase 2 (prostaglandin G/H synthase and cyclooxygenase)), along with the inflammatory genes IL8 (interleukin 8), S100A8 (S100 calcium binding protein A8) and TLR2 (toll-like receptor 2), in amnion and choriodecidua, and with downregulation of CBR1 (carbonyl reductase 1) and HPGD (hydroxyprostaglandin dehydrogenase 15-(NAD)) in choriodecidua. Protein localisation differed greatly between the various maternal and fetal cell types.

conclusionsPreterm and term labour are associated with distinct prostaglandin pathway expression profiles; inflammation provokes specific changes, unrelated to the presence of labour; spontaneous and induced term labour are indistinguishable.

Indexed as

Gene Expression3-Hydroxysteroid DehydrogenasesAdultAlcohol OxidoreductasesAldehyde ReductaseAldo-Keto Reductase Family 1 Member C3AmnionATP-Binding Cassette, Sub-Family C ProteinsCalgranulin AChorioamnionitisChorionCyclooxygenase 2Cytochrome P-450 Enzyme SystemDeciduaDown-RegulationFemale3-Hydroxysteroid DehydrogenasesABCC4 protein, humanAKR1B1 protein, humanAKR1C3 protein, humanAlcohol OxidoreductasesAldehyde ReductaseAldo-Keto Reductase Family 1 Member C3ATP-Binding Cassette, Sub-Family C ProteinsCalgranulin ACBR1 protein, humanCyclooxygenase 2Cytochrome P-450 Enzyme SystemHydroxyprostaglandin DehydrogenasesInterleukin-1Intramolecular OxidoreductasesOrganic Anion TransportersProstaglandin-E SynthasesProstaglandinsPTGIS protein, humanPTGS2 protein, humanSLCO2A1 protein, humanTLR2 protein, humanToll-Like Receptor 2

Identifiers

PMID25048443
PMCPMC4223419
OpenAlexW2059492671

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.