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Related Concept Videos

Physiology of Enteric Nervous System and Gut Health01:05

Physiology of Enteric Nervous System and Gut Health

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The gastrointestinal tract, responsible for the digestion and absorption of nutrients, is safeguarded by the intestinal barrier, which consists of secretory, physical, and immune components. At the forefront is the secretory barrier, composed of essential elements such as mucus, gut microbiota, and defense proteins. They collaborate to break down food particles, facilitate nutrient absorption, and maintain optimal gut health. These secretory components ensure the smooth functioning of the...
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Related Experiment Video

Updated: Sep 30, 2025

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Rewiring host-microbe interactions and barrier function during gastrointestinal inflammation.

Sune K Jensen1, Simone I Pærregaard1, Emma P Brandum1

  • 1Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.

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Maintaining a balanced gut microbiota and immune system is crucial for survival. Nutritional interventions can restore gut barrier function and immune tolerance, combating inflammation and microbial imbalance.

Keywords:
IBDbacterial translocationhost-defense peptidesmucosal barrier defectsnutritional immunology

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Area of Science:

  • Immunology
  • Microbiology
  • Gastroenterology

Background:

  • Host survival relies on immune balance and host-microbe mutualism.
  • Gut microbiota and host immunity interact, challenged by opportunistic bacteria and barrier dysfunction.
  • Barrier dysfunction can lead to chronic inflammation, microbial translocation, and systemic inflammation.

Purpose of the Study:

  • To review host-microbe interactions and mucosal immunity.
  • To identify nutritional strategies for improving gut barrier function and immune tolerance.
  • To provide a framework for managing inflammation via dietary interventions.

Main Methods:

  • Literature review focusing on host-microbe interactions.
  • Analysis of the role of diet in microbiota composition and function.
  • Examination of mechanisms underlying gut barrier dysfunction and inflammation.

Main Results:

  • Dietary components significantly influence microbiota and host immunity.
  • Western diets may impair gut barrier function through reduced host-defense peptide secretion.
  • Nutritional interventions offer potential strategies to restore mucosal immune tolerance.

Conclusions:

  • Nutritional interventions are key to restoring gut barrier function and immune tolerance.
  • Understanding host-microbe interactions is vital for developing therapeutic strategies.
  • Targeting dietary components can mitigate GI and extra-intestinal inflammation.