Related Experiment Video
Updated: Jul 6, 2026

Isolation of Lamina Propria Mononuclear Cells from Murine Colon Using Collagenase E
Published on: September 26, 2019
Evidence against the presence of circulating immune complexes in chronic inflammatory bowel disease
Abstract:
Several investigators have reported the presence of circulating immune complexes in serum from patients with Crohn's disease and chronic ulcerative colitis. Because previous assays employed conditions which might have caused immunoglobulin aggregates to form in vitro, thus falsely suggesting the presence of immune complexes in vivo, we tested inflammatory bowel disease sera for immune complexes using four assays designed to minimize in vitro immunoglobulin aggregation. In three assays immune complexes were not detectable, while in a fourth, the Clq precipitin test, positive reactions occurred. These precipitin reactions did not have characteristics of immune complexes. Our data suggest that circulating immune complexes are either not present in patients with inflammatory bowel disease or that they occur infrequently or in low concentration.
Related Concept Videos
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 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 transmural...
Chronic Inflammation: Introduction
Inflammatory Bowel Disease II: Ulcerative Colitis
Inflammatory Bowel Disease III: Crohn's Disease
Inflammatory Bowel Disease IV: Clinical Manifestations

