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Related Concept Videos

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

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

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Various diagnostic tests are employed in the diagnostic process for Inflammatory Bowel Disease (IBD), particularly to differentiate between Crohn's disease and ulcerative colitis.
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...
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Inflammatory Bowel Disease III: Crohn's Disease01:25

Inflammatory Bowel Disease III: Crohn's Disease

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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...
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Inflammatory Bowel Disease I: Ulcerative Colitis01:27

Inflammatory Bowel Disease I: Ulcerative Colitis

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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...
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Inflammatory Bowel Disease IV: Pharmacological Management01:29

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Upon diagnosis, managing Inflammatory Bowel Disease (IBD) involves addressing several crucial aspects. The primary goals include resting the bowel, correcting malnutrition, and providing symptomatic relief. Resting the bowel may consist of medications to reduce inflammation and promote healing. Correcting malnutrition is essential, often requiring dietary adjustments and nutritional supplements. Symptomatic relief aims to ease pain, diarrhea, and other discomforts in IBD.
Pharmacologic...
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Inflammatory Bowel Disease II: Crohn's Disease01:30

Inflammatory Bowel Disease II: Crohn's Disease

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Introduction
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...
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Inflammatory Bowel Disease I: Introduction01:26

Inflammatory Bowel Disease I: Introduction

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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...
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Related Experiment Video

Updated: May 2, 2026

Chronic Salmonella Infection Induced Intestinal Fibrosis
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Advances in IBD genetics.

Johan Van Limbergen1, Graham Radford-Smith2, Jack Satsangi3

  • 1IBD Centre, Division of Gastroenterology and Nutrition, Department of Paediatrics, IWK Health Centre, Dalhousie University, 5850/5890 University Avenue, Halifax, NS B3K 6R8, Canada.

Nature Reviews. Gastroenterology & Hepatology
|March 12, 2014
PubMed
Summary
This summary is machine-generated.

Genetic studies have uncovered over 160 locations linked to inflammatory bowel disease (IBD) susceptibility. These findings illuminate IBD pathogenesis, offering potential for patient stratification and new therapeutic targets.

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Area of Science:

  • Gastroenterology and Immunology
  • Human Genetics

Background:

  • Inflammatory bowel disease (IBD) encompasses chronic disorders posing a significant global health challenge.
  • Identifying genetic factors influencing IBD onset and progression is crucial for understanding disease mechanisms.

Purpose of the Study:

  • To review how genetic association studies have advanced the understanding of IBD pathogenesis.
  • To highlight key pathways implicated in IBD and their potential for therapeutic intervention.

Main Methods:

  • Analysis of data from the Immunochip project.
  • Review of genetic association studies focusing on IBD susceptibility loci.
  • Examination of research on innate immunity, autophagy, lymphocyte differentiation, and chemotaxis in IBD.

Main Results:

  • The Immunochip project identified over 160 loci associated with IBD susceptibility.
  • Genetic studies have pinpointed critical pathways involved in IBD pathogenesis.
  • Novel genetic markers and cellular pathways show promise for clinical applications.

Conclusions:

  • Genetic association studies have significantly enhanced our comprehension of IBD pathogenesis.
  • Identified genetic markers and pathways represent promising avenues for patient stratification.
  • These findings offer potential targets for the development of novel IBD therapies.