Related Experiment Video
Updated: Jul 16, 2026

09:04
Discovery of New Intracellular Pathogens by Amoebal Coculture and Amoebal Enrichment Approaches
Published on: October 27, 2013
Summary
Recurrent liver amoebiasis may stem from undetected intestinal infections. Treating the gut parasite resolved the patient's persistent hepatic amoebiasis, suggesting a hidden source of reinfection.
Area of Science:
- Infectious Diseases
- Hepatology
- Parasitology
Background:
- Hepatic amoebiasis is a serious liver infection caused by Entamoeba histolytica.
- Treatment failures and recurrences can occur, necessitating investigation into underlying causes.
- Asymptomatic intestinal infections may act as a reservoir for systemic spread.
Purpose of the Study:
- To investigate the cause of recurrent hepatic amoebiasis in a patient with multiple treatment failures.
- To determine the role of potential asymptomatic intestinal amoebiasis in liver infection recurrence.
- To evaluate the efficacy of intensive intestinal parasite treatment in resolving hepatic disease.
Main Methods:
- Case report of a 39-year-old male patient with three episodes of hepatic amoebiasis.
- Review of previous treatment regimens including emetine, chloroquine, and metronidazole.
- Diagnosis of asymptomatic intestinal amoebiasis after the third hepatic episode.
- Implementation of an intensive treatment regimen targeting intestinal Entamoeba histolytica.
Main Results:
- The patient experienced three distinct episodes of hepatic amoebiasis.
- Standard treatment protocols for hepatic amoebiasis were ineffective in preventing recurrence.
- Asymptomatic intestinal amoebiasis was identified following the third hepatic episode.
- A comprehensive treatment regimen for intestinal infection led to the patient's eventual cure.
Conclusions:
- Undetected intestinal amoebiasis can serve as a persistent source for hepatic reinfection.
- Aggressive treatment of intestinal parasitic infections is crucial for managing recurrent hepatic amoebiasis.
- This case highlights the importance of considering and treating asymptomatic intestinal infections in patients with refractory hepatic disease.
Related Concept Videos
Hepatitis
Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver. The...
Cryptococcal Meningitis
Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...
American Trypanosomiasis
Chagas disease, or American trypanosomiasis, is a vector-borne parasitic infection caused by Trypanosoma cruzi, a flagellated protozoan (kinetoplastid) of the family Trypanosomatidae. The disease is endemic in Latin America, although cases are increasingly reported worldwide due to human migration. Transmission most commonly occurs when feces of infected triatomine bugs contaminate bite wounds or mucosal surfaces; additional routes include congenital, transfusional, transplant-related, and oral...
Giardiasis
Giardiasis is a globally prevalent intestinal infection caused by the protozoan parasite Giardia duodenalis (also known as G. lamblia or G. intestinalis). This flagellated protozoan is the most frequently identified intestinal parasite in the United States and worldwide. Transmission primarily occurs via the fecal-oral route, with infection arising from ingestion of water or food contaminated with cysts. Individuals in low-resource settings, international travelers, outdoor enthusiasts, daycare...
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...
Hepatic Encephalopathy
DefinitionHepatic encephalopathy is a reversible neurologic syndrome that results from advanced liver dysfunction or portosystemic shunting. It leads to disturbances in cognition, behavior, and motor function due to the brain’s exposure to gut-derived toxins that the liver fails to detoxify.EtiologyThis condition develops either in the setting of acute fulminant hepatitis or progressively during chronic liver disease, such as cirrhosis and portal hypertension. Portosystemic shunting—including...

