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Related Concept Videos

Inflammatory Bowel Disease III: Crohn's Disease01:25

Inflammatory Bowel Disease III: Crohn's Disease

Crohn’s disease is a chronic, relapsing form of inflammatory bowel disease characterized by segmental, transmural inflammation that can affect any part of the gastrointestinal tract. Its pathogenesis arises from a combination of genetic susceptibility, environmental exposures, epithelial barrier dysfunction, and immune dysregulation. Together, these factors lead to an exaggerated immune response against components of the gut microbiome.Genetic and Environmental InfluencesMultiple genetic...
Inflammatory Bowel Disease II: Ulcerative Colitis01:20

Inflammatory Bowel Disease II: Ulcerative Colitis

Ulcerative colitis is a chronic inflammatory disorder of the colon characterized by continuous mucosal inflammation that typically begins in the rectum and extends proximally in a uniform pattern. Its pathogenesis involves a complex interplay of genetic predisposition, immune dysregulation, and environmental influences. These factors converge to impair the colon’s epithelial defenses and promote an exaggerated inflammatory response against luminal contents.Breakdown of the Mucosal BarrierA...
Inflammatory Bowel Disease I: Ulcerative Colitis01:27

Inflammatory Bowel Disease I: Ulcerative Colitis

Introduction
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...
Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy01:30

Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy

Various diagnostic tests are employed in the diagnostic process for Inflammatory Bowel Disease (IBD), particularly to differentiate between Crohn's disease and ulcerative colitis.
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Inflammatory Bowel Disease II: Crohn's Disease01:30

Inflammatory Bowel Disease II: Crohn's Disease

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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
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Inflammatory Bowel Disease I: Introduction01:26

Inflammatory Bowel Disease I: Introduction

Inflammatory bowel disease is a group of chronic disorders marked by recurrent inflammation of the gastrointestinal tract due to an abnormal immune response against gut microflora. This leads to tissue damage. The two main forms are Crohn’s disease and ulcerative colitis.Crohn’s DiseaseCrohn’s disease is a relapsing inflammatory disorder that can affect any part of the GI tract, from the mouth to the anus. It involves all layers of the bowel wall (transmural) and shows “skip lesions” in which...

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Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes
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Published on: September 26, 2013

IL-23/IL-17 axis in IBD.

Massimiliano Sarra1, Francesco Pallone, Thomas T Macdonald

  • 1Department of Internal Medicine, University Tor Vergata of Rome, Rome, Italy. Gi.Monteleone@Med.uniroma2.it

Inflammatory Bowel Diseases
|March 12, 2010
PubMed
Summary
This summary is machine-generated.

Recent studies reveal T helper 17 (Th17) cells and interleukin-23 (IL-23) play a complex role in inflammatory bowel diseases (IBD). While implicated in gut inflammation, these pathways may also offer protective effects, opening new therapeutic avenues.

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Area of Science:

  • Immunology
  • Gastroenterology

Background:

  • Inflammatory bowel diseases (IBD), including Crohn's disease and ulcerative colitis, involve gut inflammation.
  • Traditionally, Th1 and Th2 cell responses were linked to these conditions.
  • Emerging evidence highlights the involvement of T helper 17 (Th17) cells in IBD pathogenesis.

Purpose of the Study:

  • To review the dual role of Th17 cells and interleukin-23 (IL-23) in chronic intestinal inflammation.
  • To explore how Th17-related cytokines impact gut pathology and potential therapeutic strategies in IBD.

Main Methods:

  • Literature review of recent studies on Th17 cells, IL-23, and their cytokines in IBD.
  • Analysis of the mechanisms driving gut inflammation and tissue damage.
  • Evaluation of the protective versus detrimental effects of Th17 cytokines in the gut.

Main Results:

  • Th17 cells and IL-23 are significantly involved in the immune responses within the gut in IBD.
  • IL-23 amplifies Th17 cell activity, contributing to intestinal inflammation.
  • Paradoxically, Th17-related cytokines like IL-17A and IL-22 may also exert protective functions in the gut.

Conclusions:

  • The role of Th17 cells and IL-23 in IBD is complex, involving both inflammatory and potentially protective mechanisms.
  • Understanding these pathways is crucial for developing novel therapeutic strategies for IBD.
  • Further research is needed to fully elucidate the balance between detrimental and protective effects of Th17 cytokines in chronic intestinal inflammation.