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Related Concept Videos

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 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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Inflammatory Bowel Disease II: Ulcerative Colitis01:20

Inflammatory Bowel Disease II: Ulcerative Colitis

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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...
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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 IV: Clinical Manifestations01:20

Inflammatory Bowel Disease IV: Clinical Manifestations

33
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...
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Development of an Antigen-driven Colitis Model to Study Presentation of Antigens by Antigen Presenting Cells to T Cells
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Inflammatory bowel disease: past, present, and future.

Bruce E Sands1

  • 1MGH Crohn's and Colitis Center and Gastrointestinal Unit, Massachusetts General Hospital, Harvard Medical School, 165 Cambridge Street, 9th Floor, Boston, MA 02114, USA.

Journal of Gastroenterology
|February 27, 2007
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Inflammatory bowel diseases (IBD), such as Crohn's disease and ulcerative colitis, are linked to modern society. Understanding their pathogenesis is key to developing more targeted and effective therapies for patients.

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Area of Science:

  • Gastroenterology
  • Immunology
  • Epidemiology

Background:

  • Inflammatory bowel diseases (IBD), including Crohn's disease and ulcerative colitis, are increasingly prevalent in industrialized nations.
  • The etiology of IBD is complex, with current models implicating intestinal microbiota and immune responses in genetically susceptible individuals.
  • Historical descriptions of IBD preceded modern understanding of disease mechanisms.

Purpose of the Study:

  • To review the historical context and current understanding of inflammatory bowel disease pathogenesis.
  • To connect the elucidation of disease mechanisms with advancements in IBD therapy.
  • To explore future directions in IBD research, focusing on personalized treatment strategies.

Main Methods:

  • Literature review of historical descriptions of IBD.
  • Analysis of current research on IBD pathogenesis, including the role of the gut microbiome and immune system.
  • Examination of the relationship between pathogenic mechanisms and therapeutic interventions.

Main Results:

  • Detailed clinical descriptions of IBD preceded fundamental discoveries in disease processes.
  • Understanding the pathogenesis of IBD has led to more focused and effective treatments.
  • Current research highlights the interplay between host genetics, intestinal flora, and immune responses in IBD development.

Conclusions:

  • The historical progression of IBD research has significantly informed therapeutic development.
  • Future research will likely focus on the diverse causes of IBD, paving the way for individualized treatment approaches.
  • Continued investigation into IBD pathogenesis is crucial for advancing patient care and outcomes.