Evidence map›Paper›PMID 29652914›Full record

ArticlePloS one2018

Intestinal manipulation affects mucosal antimicrobial defense in a mouse model of postoperative ileus.

Kathy Stein, Lena Hieggelke, Bianca Schneiker, Mariola Lysson, Burkhard Stoffels, Sabine Nuding, Jan Wehkamp, Judith Kikhney, Annette Moter, Joerg C Kalff and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. 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
2.1field-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, 18 citations in OpenAlex.

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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

11 authors at 4 institutions in 1 country.

Kathy SteinDepartment of Surgery, University Hospital of Bonn, Bonn, Germany.ORCID 0000-0002-6637-4094
Lena HieggelkeDepartment of Surgery, University Hospital of Bonn, Bonn, Germany.
Bianca SchneikerDepartment of Surgery, University Hospital of Bonn, Bonn, Germany.
Mariola LyssonDepartment of Surgery, University Hospital of Bonn, Bonn, Germany.
Burkhard StoffelsDepartment of Surgery, University Hospital of Bonn, Bonn, Germany.
Sabine NudingDr. Margarete Fischer-Bosch-Institute for Clinical Pharmacology, Stuttgart, Germany.
Jan WehkampInternal Medicine I, University Hospital of Tübingen, Tübingen, Germany.
Judith KikhneyInstitute of Microbiology and Hygiene/Biofilmcenter, Charité-University Medicine, Berlin, Germany.
Annette MoterInstitute of Microbiology and Hygiene/Biofilmcenter, Charité-University Medicine, Berlin, Germany.
Joerg C KalffDepartment of Surgery, University Hospital of Bonn, Bonn, Germany.
Sven WehnerDepartment of Surgery, University Hospital of Bonn, Bonn, Germany.ORCID 0000-0002-8632-7631
University Hospital Bonn · DEInstitute of Medical Microbiology and Hygiene · DEDr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology · DEUniversity Children's Hospital Tübingen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo explore the effects of abdominal surgery and interleukin-1 signaling on antimicrobial defense in a model of postoperative ileus.

methodsC57BL/6 and Interleukin-1 receptor type I (IL-1R1) deficient mice underwent intestinal manipulation to induce POI. Expression of mucosal IL-1α, IL-1β and IL-1R1 and several antimicrobial peptides and enzymes were measured by quantitative PCR or ELISA, western blotting or immunohistochemistry. Bacterial overgrowth was determined by fluorescent in-situ hybridization and counting of jejunal luminal bacteria. Translocation of aerobic and anaerobic bacteria into the intestinal wall, mesenteric lymph nodes, liver and spleen was determined by counting bacterial colonies on agar plates 48h after plating of tissue homogenates. Antimicrobial activity against E. coli and B. vulgatus was analyzed in total and cationic fractions of small bowel mucosal tissue homogenates by a flow cytometry-based bacterial depolarization assay.

resultsJejunal bacterial overgrowth was detected 24h after surgery. At the same time point, but not in the early phase 3h after surgery, bacterial translocation into the liver and mesenteric lymph nodes was observed. Increased antimicrobial activity against E. coli was induced within early phase of POI. Basal antimicrobial peptide and enzyme gene expression was higher in the ileal compared to the jejunal mucosa. The expression of lysozyme 1, cryptdin 1, cryptdin 4 and mucin 2 were reduced 24h after surgery in the ileal mucosa and mucin 2 was also reduced in the jejunum. Postoperative IL-1α and IL-1β were increased in the postoperative mucosa. Deficiency of IL-1R1 affected the expression of antimicrobial peptides during homeostasis and POI.

conclusionSmall bowel antimicrobial capacity is disturbed during POI which is accompanied by bacterial overgrowth and translocation. IL-1R1 is partially involved in the gene expression of mucosal antimicrobial peptides. Altered small bowel antimicrobial activity may contribute also to POI development and manifestation in patients undergoing abdominal surgery.

Indexed as

AnimalsDisease Models, AnimalIleusIntestinal MucosaMaleMicePostoperative ComplicationsReceptors, Interleukin-1 Type ISignal TransductionIL1R1 protein, mouseReceptors, Interleukin-1 Type I

Identifiers

PMID29652914
PMCPMC5898729
OpenAlexW2895890124

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Registered trials

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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.