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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 II: Crohn's Disease01:30

Inflammatory Bowel Disease II: Crohn's Disease

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 transmural...
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 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: 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 IV: Clinical Manifestations01:20

Inflammatory Bowel Disease IV: Clinical Manifestations

Inflammatory bowel disease (IBD) encompasses two major chronic disorders—ulcerative colitis and Crohn’s disease—each characterized by relapsing episodes of gastrointestinal inflammation. Although they share certain clinical features, their patterns of involvement and manifestations differ in ways that aid diagnosis and guide management.Ulcerative ColitisUlcerative colitis is limited to the colon and rectum and involves continuous inflammation of the mucosal layer. The disease course is marked...

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Related Experiment Video

Updated: May 22, 2026

Chronic Salmonella Infection Induced Intestinal Fibrosis
08:40

Chronic Salmonella Infection Induced Intestinal Fibrosis

Published on: September 22, 2019

[Psoriasis and inflammatory bowel diseases].

E Delaporte1

  • 1Université de Lille 2 et Service de Dermatologie, Hôpital Claude-Huriez, CHRU, Rue Michel Polonovski 59037 Lille cedex, France. emmanuel.delaporte@chru-lille.fr

Annales De Dermatologie Et De Venereologie
|May 1, 2012
PubMed
Summary
This summary is machine-generated.

Psoriasis and inflammatory bowel diseases share genetic and immune pathways, suggesting common origins. Environmental factors like smoking and infections also play a role in their development.

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Area of Science:

  • Immunology
  • Genetics
  • Gastroenterology

Context:

  • Psoriasis, Crohn's disease, and ulcerative colitis are immune-mediated inflammatory diseases.
  • These conditions can co-occur in patients, indicating shared underlying mechanisms.
  • Understanding these associations is crucial for comprehensive patient care.

Purpose:

  • To explore the shared genetic, immunological, and environmental factors linking psoriasis and inflammatory bowel diseases.
  • To elucidate the common pathways involved in the pathogenesis of these immune-mediated disorders.
  • To provide insights into potential therapeutic targets based on shared mechanisms.

Summary:

  • Genome-wide association studies reveal shared predisposing genetic loci and genes, particularly in innate immunity.
  • Immunological data highlights shared inflammation effector mechanisms, including Th17 lymphocyte activation, explaining the efficacy of biologic therapies (anti-TNF, anti-IL-12/23).
  • Environmental co-factors such as smoking, certain food proteins (e.g., gliadin), and bacterial infections are implicated as critical elements in disease development.

Impact:

  • This research deepens our understanding of the complex interplay between genetic susceptibility, immune dysregulation, and environmental triggers in immune-mediated diseases.
  • Identifies common pathogenic pathways, paving the way for novel therapeutic strategies targeting shared mechanisms.
  • Highlights the importance of considering co-occurring immune-mediated conditions in clinical practice.