Related Experiment Video
Updated: Mar 13, 2026

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System
Published on: October 16, 2013
Can IgG4 Levels Identify the Ulcerative Colitis Subtype of Inflammatory Bowel Disease?
Ricardo Jacaranda Faria1, Cintia Mendes Clemente2, Fabiana P Carneiro2
1Universidade de Brasilia, Brasilia, Distrito Federal, Brazil; Hospital Universitario de Brasilia, Brasilia, Distrito Federal, Brazil; Hospital de Base do Distrito Federal, Brasilia, Distrito Federal, Brazil.
Exocrine pancreatic insufficiency is common in inflammatory bowel disease but not linked to elevated immunoglobulin G4 (IgG4) levels. However, high IgG4 in ulcerative colitis may serve as a diagnostic biomarker.
Area of Science:
- Gastroenterology
- Immunology
Background:
- Inflammatory bowel disease (IBD) can manifest with pancreatitis and exocrine pancreatic insufficiency (EPI).
- Autoimmune pancreatitis and colitis are linked to IgG4-related disease.
- Elevated immunoglobulin G4 (IgG4) and EPI in IBD are debated.
Purpose of the Study:
- To investigate the significance of elevated serum IgG4 levels in patients with IBD.
Main Methods:
- Cross-sectional study of 56 IBD patients.
- Fecal pancreatic elastase testing for EPI.
- Serum IgG4 measurement and correlation with clinical data.
Main Results:
- EPI diagnosed in 17.8% of patients; no correlation with disease activity or serum IgG4.
- Elevated serum IgG4 found in 10 patients, most common in ulcerative colitis (UC) (prevalence ratio 16.42).
Conclusions:
- EPI is prevalent in IBD but not associated with elevated serum IgG4.
- High serum IgG4 in UC suggests potential as a diagnostic biomarker.
Related Concept Videos
Inflammatory Bowel Disease I: Ulcerative Colitis
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...
Inflammatory Bowel Disease II: Crohn's Disease
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...
Chronic Bowel Disorders: Introduction
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 III: Diagnostic Studies and Management I-Nutritional Therapy
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...
Drugs for Treatment of Ulcerative Colitis in IBD
Inflammatory Bowel Disease V: Surgical Management
Here are some common surgical interventions for IBD:

