Publikationsdatenbank

Intestinal barrier in post-Campylobacter jejuni irritable bowel syndrome (2023)

Art

Zeitschriftenartikel / wissenschaftlicher Beitrag

Autoren

Omarova, Sholpan

Awad, Karem

Moos, Verena

Püning, Christoph (WE 8)

Gölz, Greta (WE 8)

Schulzke, Jörg-Dieter

Bücker, Roland

Forschungsprojekt

PAC-CAMPY - IP2: Biofilme und Strategien zu deren Reduktion

Quelle

Biomolecules : open access journal

Bandzählung: 13

Heftzählung: 3

Seiten: Artikel 449

ISSN: 2218-273x

Sprache

Englisch

Verweise

URL (Volltext): https://www.mdpi.com/2218-273X/13/3/449

DOI: 10.3390/biom13030449

Pubmed: 36979384

Kontakt

Institut für Lebensmittelsicherheit und -hygiene

Königsweg 69
14163 Berlin
+49 30 838 62551 / 52790
lebensmittelhygiene@vetmed.fu-berlin.de / fleischhygiene@vetmed.fu-berlin.de

Abstract / Zusammenfassung

Background:
Campylobacter jejuni (C. jejuni) is one of the most common causes of bacterial gastroenteritis worldwide. One sequela of this infection is the development of post-infectious irritable bowel syndrome (PI-IBS). It has been suggested that a dysfunctional intestinal barrier may promote IBS development. We aimed to test this hypothesis against the background of the leaky gut concept for low-grade inflammation in PI-IBS.

Methods:
We identified patients with persistent PI-IBS symptoms after C. jejuni infection. During sigmoidoscopy, forceps biopsies were obtained for electrophysiological measurements of epithelial transport and barrier function in miniaturized Ussing devices. C. jejuni absence was checked by PCR and cytokine production with immunohistochemistry.

Results:
In PI-IBS, the epithelial resistance of the colon epithelium was unaltered, reflecting an intact paracellular pathway. In contrast, temperature-dependent horseradish peroxidase (HRP, 44 kDa) permeation increased. Short-circuit current (Isc) reflecting active anion secretion and ENaC-dependent electrogenic sodium absorption was unaffected. Early endosome antigen-1 (EEA1) and IL-4 levels increased. C. jejuni is not incorporated into the resident microbiota of the colon mucosa in PI-IBS.

Conclusions:
In PI-IBS after C. jejuni infection, macromolecule uptake via endocytosis was enhanced, leading to low-grade inflammation with pro-inflammatory cytokine release. The findings will allow C. jejuni-induced pathomechanisms to be targeted during infection and, thereafter to reduce sequelae such as PI-IBS.