Related Experiment Video

Updated: Aug 18, 2026

Analysis of the Epithelial Damage Produced by Entamoeba histolytica Infection
11:49

Analysis of the Epithelial Damage Produced by Entamoeba histolytica Infection

Published on: June 12, 2014

Vascular occlusion in the pathogenesis of complicated amoebic colitis: evidence for an hypothesis

F M Luvuno, Z Mtshali, L W Baker

    The British Journal of Surgery
    |February 1, 1985
    PubMed

    Amoebic perforation of bowel, the final and most serious manifestation of transmural amoebic colitis, is due to thrombotic occlusion of vessels supplying the segment of bowel with subsequent infarction and ischaemic necrosis. The ischaemic nature of the necrosis is confirmed by its shape and the demonstration of vascular thrombosis in the resected specimens of perforated amoebic colitis. Specimen angiography confirms the avascular area confined to the macroscopic lesions. Thrombotic occlusion and amoebic invasion of blood vessels have been demonstrated histologically. This new information suggests that amoebic perforation of the bowel is due to vascular compromise.

    More Related Videos

    Complementary Use of Microscopic Techniques and Fluorescence Reading in Studying Cryptococcus-Amoeba Interactions10:56

    Complementary Use of Microscopic Techniques and Fluorescence Reading in Studying Cryptococcus-Amoeba Interactions

    Published on: June 22, 2019

    A Visual Approach for Inducing Dolichoectasia in Mice to Model Large Vessel-Mediated Cerebrovascular Dysfunction04:29

    A Visual Approach for Inducing Dolichoectasia in Mice to Model Large Vessel-Mediated Cerebrovascular Dysfunction

    Published on: May 17, 2024

    Related Concept Videos

    Peptic Ulcer Disease II: Pathophysiology01:28

    Peptic Ulcer Disease II: Pathophysiology

    Peptic Ulcer Disease (PUD) is characterized by the development of ulcers in the stomach or duodenal mucosa. Its pathophysiology is complex, involving a balance between damaging and protective elements.
    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: Ulcerative Colitis01:27

    Inflammatory Bowel Disease I: Ulcerative Colitis

    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...
    Amebiasis01:28

    Amebiasis

    Entamoeba histolytica, a protozoan parasite, is responsible for intestinal and extraintestinal amebiasis. Though a significant proportion of infections remain asymptomatic, approximately 50 million individuals annually are estimated to present with clinical disease, resulting in up to 100,000 deaths globally. The disease burden is disproportionately high in regions with lower socioeconomic status, such as parts of India, Africa, Mexico, and Latin America.Etiology and TransmissionThe infective...
    Peptic Ulcer Disease II: Pathophysiology01:24

    Peptic Ulcer Disease II: Pathophysiology

    Peptic ulcer disease develops when protective mechanisms of the gastrointestinal mucosa are overwhelmed by harmful factors, leading to localized erosions in the stomach or proximal duodenum. The main causes are Helicobacter pylori infection and chronic use of nonsteroidal anti-inflammatory drugs (NSAIDs).Helicobacter pylori–Induced InjuryBacterial Adaptation and Colonization:H. pylori is a spiral, Gram-negative bacterium adapted to the acidic stomach. and transmitted through oral-oral or...
    Intestinal Obstruction II: Pathophysiology01:07

    Intestinal Obstruction II: Pathophysiology

    Intestinal obstruction triggers a series of physiological responses, starting with gas and fluid accumulation in the bowel segment proximal to the obstruction, leading to distension. This distended intestine compresses the diaphragm, hindering lung expansion and potentially leading to reduced respiratory effort, atelectasis, and pneumonia.To overcome the blockage, the gut intensifies contractions, causing colicky abdominal pain, nausea, and vomiting, which reduces fluid and food intake and...
    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...