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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

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 colonic...
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: 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 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...
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 10, 2026

Systematic Scoring Analysis for Intestinal Inflammation in a Murine Dextran Sodium Sulfate-Induced Colitis Model
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Systematic Scoring Analysis for Intestinal Inflammation in a Murine Dextran Sodium Sulfate-Induced Colitis Model

Published on: February 14, 2021

Scoring systems in inflammatory bowel disease.

Rishabh Sehgal1, Walter A Koltun

  • 1Section of Colon and Rectal Surgery, Penn State Milton S Hershey Medical Center, PO Box 850, Hershey, PA 17033, USA.

Expert Review of Gastroenterology & Hepatology
|August 4, 2010
PubMed
Summary
This summary is machine-generated.

Inflammatory bowel disease (IBD) management is challenged by a lack of sensitive diagnostic tests. Current classification systems aim to improve disease assessment and guide personalized treatment by linking clinical expression to genetic findings.

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Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
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Area of Science:

  • Gastroenterology
  • Genetics
  • Clinical Medicine

Background:

  • Inflammatory bowel disease (IBD) is a chronic GI condition requiring lifelong management, often involving surgery.
  • Assessing IBD severity and treatment effectiveness is difficult due to the absence of a single, sensitive diagnostic test.
  • Existing IBD scoring and classification systems aid in defining disease status and therapeutic response.

Purpose of the Study:

  • To review the development and utility of IBD classification systems.
  • To highlight the role of genetic research in understanding IBD pathophysiology.
  • To propose integrating clinical and genetic data for improved disease characterization and personalized treatment.

Main Methods:

  • Review of historical and current IBD classification systems.
  • Summary of recent genetic investigations in IBD.
  • Discussion of genotype-phenotype correlations in IBD.

Main Results:

  • Multiple IBD classification systems exist to standardize patient characterization.
  • Genetic studies reveal significant complexity and numerous mutations associated with IBD.
  • Clinical classification systems provide a foundation for correlating genotype with clinical presentation.

Conclusions:

  • IBD classification systems are crucial for managing this complex condition.
  • Understanding the genetic underpinnings of IBD is essential for advancing patient care.
  • Integrating clinical and genetic data promises to define IBD subtypes and enable customized therapies.