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Related Concept Videos

Chronic Bowel Disorders: Introduction01:17

Chronic Bowel Disorders: Introduction

Chronic bowel diseases are a group of long-term conditions affecting the digestive tract, characterized by inflammation and damage to the gut lining. These conditions primarily include irritable bowel syndrome and inflammatory bowel disease.
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
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...
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 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...
Autoimmune Disorders01:29

Autoimmune Disorders

Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune system...
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...

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Related Experiment Video

Updated: Jun 4, 2026

Chronic Salmonella Infection Induced Intestinal Fibrosis
08:40

Chronic Salmonella Infection Induced Intestinal Fibrosis

Published on: September 22, 2019

Autoimmune bowel disease.

F H Anderson

    Canadian Family Physician Medecin De Famille Canadien
    |February 8, 2011
    PubMed
    Summary
    This summary is machine-generated.

    The gastrointestinal tract is a key lymphatic organ with complex immune functions. Abnormal immune responses are linked to gastrointestinal diseases like pernicious anemia, ulcerative colitis, and Crohn's disease.

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    Induction of Intestinal Inflammation by Adoptive Transfer of CBir1 TCR Transgenic CD4+ T Cells to Immunodeficient Mice
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    Induction of Intestinal Inflammation by Adoptive Transfer of CBir1 TCR Transgenic CD4+ T Cells to Immunodeficient Mice

    Published on: December 16, 2021

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    Last Updated: Jun 4, 2026

    Chronic Salmonella Infection Induced Intestinal Fibrosis
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    Chronic Salmonella Infection Induced Intestinal Fibrosis

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    Induction of Intestinal Inflammation by Adoptive Transfer of CBir1 TCR Transgenic CD4+ T Cells to Immunodeficient Mice
    07:34

    Induction of Intestinal Inflammation by Adoptive Transfer of CBir1 TCR Transgenic CD4+ T Cells to Immunodeficient Mice

    Published on: December 16, 2021

    Area of Science:

    • Immunology
    • Gastroenterology
    • Lymphatic System Biology

    Background:

    • The gastrointestinal (GI) tract functions as a major lymphatic organ, constantly interacting with foreign antigens and pathogens.
    • The complex immunology of the GI tract is not fully understood due to challenges in studying normal physiological responses.
    • Immune system abnormalities are evident in several common GI diseases.

    Purpose of the Study:

    • To discuss the immunological aspects of the gastrointestinal tract.
    • To explore immune abnormalities in common GI diseases.
    • To examine the potential role of autoimmunity in GI diseases and their extra-intestinal manifestations.

    Main Methods:

    • Review of existing literature on GI immunology.
    • Analysis of immune system abnormalities in specific GI diseases.
    • Discussion of potential autoimmune mechanisms and extra-intestinal symptoms.

    Main Results:

    • The GI tract possesses significant immunological capabilities.
    • Pernicious anemia, ulcerative colitis, and Crohn's disease exhibit distinct immune system abnormalities.
    • Autoimmunity may play a role in these GI diseases and their associated extra-intestinal conditions.

    Conclusions:

    • Understanding the GI tract's immunology is crucial for comprehending associated diseases.
    • Immune dysregulation is a key factor in conditions such as pernicious anemia, ulcerative colitis, and Crohn's disease.
    • Further research into autoimmunity is warranted for GI disease management and understanding extra-intestinal manifestations.