Related Experiment Video
Updated: May 11, 2026

Injections of Lipopolysaccharide into Mice to Mimic Entrance of Microbial-derived Products After Intestinal Barrier Breach
Published on: May 2, 2018
[The pathogenesis features of ulcerative colitis and the pathogenetic theory of "toxin impairing intestine
1Gastroenterology Department, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China. wxy6687@sina.com
Abstract:
Ulcerative colitis (UC), a kind of chronic nonspecific intestinal inflammation with unknown etiology, is very difficult to cure. It recurs often and even is accompanied with parenteral lesion. It has been rated as one of contemporary refractory diseases by World Health Organization. The author combines the pathological mechanisms of UC with the poison-evil theory and the collateral disease theory, and puts forward that "toxin impairing intestine collateral" pathogenesis theory. We believe that longer accumulation of damp-heat stasis toxin that damages the intestine collateral is the key cause for recurrence and relapses of UC. We explained its theory foundation in terms of pathogenesis of UC from Chinese medicine and modern medicine. The "toxin impairing intestine collateral" theory might perfect the syndrome typing system for UC, and provide a new way of thinking for treating UC.
Related Concept Videos
Inflammatory Bowel Disease II: Ulcerative Colitis
Inflammatory Bowel Disease III: Crohn's Disease
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...
Peptic Ulcer Disease II: Pathophysiology
Peptic Ulcer Disease II: Pathophysiology
Damaging agents such as Helicobacter pylori, gastric acid, pepsin, and nonsteroidal anti-inflammatory drugs (NSAIDs) can weaken the mucosal defense, allowing hydrogen ions to infiltrate back and harm epithelial cells.
Inflammatory Bowel Disease I: Introduction

