In vitro mucin degradation and paracellular permeability by fecal water from Crohn's disease patients

Heike Ef Becker, Nader Kameli, Alice Rustichelli, Britt Am Heijnens, Frank Rm Stassen, John Penders, Daisy Mae Jonkers*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

This study aimed to examine the impact of fecal water (FW) of active and remissive Crohn's disease (CD) patients on mucin degradation and epithelial barrier function. FW and bacterial membrane vesicles (MVs) were isolated from fresh fecal samples of six healthy controls (HCs) and 12 CD patients. Bacterial composition was determined by 16S rRNA gene amplicon sequencing. FW-induced mucin degradation was higher in CD samples versus HC (p < 0.01), but not associated with specific bacterial genera. FW of three remissive samples decreased transepithelial electrical resistance in Caco-2 cells by 78-87% (p < 0.001). MVs did not induce barrier alterations. The higher mucin-degradation capacity of CD-derived FW might suggest contributions of microbial products to CD pathophysiology.
Original languageEnglish
Pages (from-to)335-347
Number of pages13
JournalFuture Microbiology
Volume19
DOIs
Publication statusPublished - 12 Mar 2024

Keywords

  • Crohn's disease
  • fecal microbial secretome
  • intestinal epithelial barrier
  • mucin

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