Evidence map›Paper›PMID 21041526›Full record

ArticleThe Journal of physiology2010

Inflammatory mediators weaken the amniotic membrane barrier through disruption of tight junctions.

Ken Kobayashi, Hideki Miwa, Masato Yasui

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

13 citing papers in PubMed, 35 citations in OpenAlex.

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  12. Claudins in lung diseases.Respiratory research · 2011
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 3 institutions in 1 country.

Ken KobayashiDepartment of Pharmacology, School of Medicine, Keio University, Tokyo, Japan. kkobaya@anim.agr.hokudai.ac.jp
Hideki Miwa
Masato Yasui
Gunma University · JPHokkaido University · JPKeio University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In chorioamnionitis, intra-amniotic infections render the amniotic fluid an adverse environment for the fetus and increase the risk of fetal mortality and morbidity. It remains unclear how infection crosses the amniotic barrier, which is made up of tight junctions (TJs). In this study, we investigated whether amniotic TJs are disrupted in inflammatory conditions such as chorioamnionitis. Amniotic TJs were disrupted by single applications of interleukin (IL)-1β, IL-6, tumour necrosis factor-α (TNF-α), and prostaglandin E2. In organ-cultured amniotic membranes, these inflammatory mediators decreased the claudin-3 and claudin-4 levels at the apical junction at different times. Injecting IL-6 into the amniotic cavity concurrently induced the disruption of amniotic TJs by decreasing the claudin-3 and claudin-4 levels at the apical junction, and the dysfunction of the amniotic barrier; in contrast, injecting TNF-α weakened the amniotic barrier by inducing apoptosis of the amniotic epithelial cells, with no decrease in claudin-3 and claudin-4 at the apical junction. Furthermore, inflammation in the amniotic membrane, which was induced by the administration of lipopolysaccharide to pregnant mice, concurrently caused dysfunction of the amniotic barrier and disruption of TJs, involving the decrease of claudin-3 and claudin-4 levels at the apical junction and apoptosis in the amniotic epithelium. These results indicate that the adverse effects of the inflammatory mediators on amniotic TJs cause severe dysfunction of the amniotic barrier.

Indexed as

AmnionAnimalsClaudin-3Claudin-4CytokinesFemaleGene Expression RegulationLipopolysaccharidesMembrane ProteinsMiceMice, Inbred ICRPregnancyTight JunctionsClaudin-3Claudin-4Cldn3 protein, mouseCldn4 protein, mouseCytokinesLipopolysaccharidesMembrane Proteins

Identifiers

PMID21041526
PMCPMC3036184
OpenAlexW2116078884

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.