Authors: Mariman Rob Kremer Bas van Erk Marjan Lagerweij Tonny Koning Frits Nagelkerken Lex
Publish Date: 2012/08/01
Volume: 18, Issue: 8, Pages: 1424-1433
Abstract
Rob Mariman Bas Kremer Marjan van Erk Tonny Lagerweij Frits Koning Lex Nagelkerken Gene Expression Profiling Identifies Mechanisms of Protection to Recurrent Trinitrobenzene Sulfonic Acid Colitis Mediated by Probiotics Inflammatory Bowel Diseases Volume 18 Issue 8 1 August 2012 Pages 1424–1433 https//doiorg/101002/ibd22849Host–microbiota interactions in the intestinal mucosa play a major role in intestinal immune homeostasis and control the threshold of local inflammation The aim of this study was to evaluate the efficacy of probiotics in the recurrent trinitrobenzene sulfonic acid TNBSinduced colitis model and gain more insight into protective mechanismsLongterm administration of Lactobacillus plantarum NCIMB8826 or the probiotic mixture VSL3 reduced intestinal inflammation induced by TNBS evident from improved colon morphology and less influx of innate CD11b+ and adaptive CD4+/CD8+ immune cells in the intestinal mucosa and decreased proinflammatory serum cytokines interferongamma IFNγ interleukin IL17 IL1β monocyte chemoattractant protein MCP1 in probiotictreated mice Genomewide expression analysis of colonic tissues using microarrays revealed differences in expression of genes related to inflammation and immune processes between untreated and probiotic treated mice Principal component analysis revealed that probiotic treatment resulted in a shift of gene expression profiles toward those of healthy controls Effects of probiotics on colonic gene expression were most profound during active inflammation in particular on gene clusters related to mast cells and antimicrobial peptides The results were substantiated by suppression of chemokine gene expression
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