Evidence map›Paper›PMID 19488769›Full record

ArticleInternational journal of colorectal disease2009

Inflamed pouch mucosa possesses altered tight junctions indicating recurrence of inflammatory bowel disease.

Salah Amasheh, Sonja Dullat, Michael Fromm, Jörg D Schulzke, Heinz J Buhr, Anton J Kroesen

Abstract read
PubMed Publisher
In one paragraph

Article in International journal of colorectal disease, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
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

25 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
  4. Application of Intestinal Barrier Molecules in the Diagnosis of Acute Cellular Rejection After Intestinal Transplantation.Transplant international : official journal of the European Society for Organ Transplantation · 2023
    Article
  5. Article
  6. Article
  7. A New Rat Model of Pouchitis After Proctocolectomy and Ileal Pouch-Anal Anastomosis Using 2,4,6-Trinitrobenzene Sulfonic Acid.Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract · 2021
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Dichloromethane Extracts ofInternational journal of molecular sciences · 2018
    Article
  13. Article
  14. Article
  15. Review article: the pathogenesis of pouchitis.Alimentary pharmacology & therapeutics · 2016
    Review
  16. Review
  17. Inflammatory pouch disease: The spectrum of pouchitis.World journal of gastroenterology · 2015
    Review
  18. Article
  19. Article
  20. Review
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.

Salah AmashehInstitute of Clinical Physiology, CBF, Charité, Freie Universität und Humboldt Universität, 12200, Berlin, Germany. salah.amasheh@charite.de
Sonja Dullat
Michael Fromm
Jörg D Schulzke
Heinz J Buhr
Anton J Kroesen

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsThe etiology of pouchitis after coloproctomucosectomy with ileal pouch-anal anastomosis in patients with ulcerative colitis is still unknown. Beside changes in luminal antigens, the immunological predisposition is assumed to be responsible. In previous electrophysiological studies, we showed that mucosal barrier and transport function in pouchitis is markedly reduced. Thus, the aim of the present study was to analyze barrier function on the molecular level. MATERIAL AND

methodsPouch biopsies of 36 ulcerative colitis patients were analyzed. Time points were (1) intraoperative immediately prior to ileal pouch-anal anastomosis (n = 13), (2) >1 year after ileostomy closure (pouch, n = 12), and (3) during pouchitis (n = 11). Control terminal ileum biopsies were obtained from eight patients undergoing hemicolectomy due to carcinoma. Expression of tight junction proteins was analyzed by Western blotting and confocal laser-scanning microscopy. To elucidate effects on epithelial barrier properties, impedance spectroscopy was performed in miniaturized Ussing chambers.

resultsIn pouchitis, epithelial resistance was markedly reduced compared to non-inflamed pouch and control ileum. Expression of tight junction proteins claudin-1, 3, 4, 5, and 7 and occludin revealed differential expression regulation with the tightening tight junction protein claudin-1 being decreased and an increase of the pore-forming claudin-2, whereas other claudins remained constant. Morphometry indicated the mucosal surface to be unchanged.

conclusionPouchitis is characterized by a selective change of tight junction proteins in favor of opening the epithelial tight junction and, thus, the paracellular pathway, which contributes to the inflammatory process. This resembles changes in inflammatory bowel disease (IBD) and indicates IBD recurrence in pouchitis.

Indexed as

Blotting, WesternClaudin-1ClaudinsDensitometryElectrophysiological PhenomenaFemaleHumansInflammatory Bowel DiseasesMaleMembrane ProteinsMicroscopy, ConfocalPouchitisRecurrenceTight JunctionsClaudin-1ClaudinsCLDN1 protein, humanCLDN2 protein, humanMembrane Proteins

Identifiers

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.