Related Experiment Video
Updated: May 2, 2026
Investigating Intestinal Barrier Breakdown in Living Organoids
Published on: March 26, 2020
Intestinal barrier in inflammatory bowel disease
Lena Antoni1, Sabine Nuding1, Jan Wehkamp1
1Lena Antoni, Sabine Nuding, Jan Wehkamp, Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology Stuttgart, University of Tübingen, D-70376 Stuttgart, Germany.
The intestinal mucosal barrier, including epithelium, antimicrobial peptides (AMPs), and mucus, prevents microbial invasion. Disruptions in these components contribute to inflammatory bowel diseases.
Area of Science:
- Gastroenterology
- Immunology
- Microbiology
Background:
- The intestinal tract possesses a complex mucosal barrier as its primary defense against luminal microorganisms.
- This barrier comprises an intact epithelium, antimicrobial peptides (AMPs), and a mucus layer.
Purpose of the Study:
- To review the major components of the intestinal mucosal barrier.
- To highlight the importance of barrier function in maintaining intestinal health and preventing disease.
- To discuss the role of barrier dysfunction in the pathogenesis of inflammatory bowel diseases (IBD).
Main Methods:
- Literature review of the intestinal mucosal barrier.
- Analysis of components such as epithelium, antimicrobial peptides, and mucus.
- Examination of the relationship between barrier defects and IBD.
Main Results:
- The intestinal mucosal barrier is essential for preventing microbial adhesion and invasion.
- Proper functioning of the epithelium, AMPs, and mucus is critical for intestinal homeostasis.
- Disturbances in barrier components, including AMP production, mucus composition, and cellular stress responses, are implicated in IBD pathogenesis.
Conclusions:
- A healthy intestinal mucosal barrier is vital for preventing dysbiosis and disease.
- Defects in the intestinal barrier, such as impaired AMP synthesis or altered mucus layers, contribute to inflammatory bowel diseases like Crohn's disease and ulcerative colitis.
More Related Videos
08:24Injections of Lipopolysaccharide into Mice to Mimic Entrance of Microbial-derived Products After Intestinal Barrier Breach
Published on: May 2, 2018
07:32An Intravital Microscopy-Based Approach to Assess Intestinal Permeability and Epithelial Cell Shedding Performance
Published on: December 3, 2020
Related Concept Videos
01:25Inflammatory Bowel Disease III: Crohn's Disease
01:20Inflammatory Bowel Disease II: Ulcerative Colitis
01:26Inflammatory Bowel Disease I: Introduction
01:30Inflammatory Bowel Disease II: Crohn's Disease
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by...
01:27Inflammatory Bowel Disease I: Ulcerative Colitis
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
01:30Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...