Tropical enteropathy

Tropical Enteropathy Tropical enteropathy, also known as environmental enteropathy, is a subclinical disorder of the small intestine that is prevalent in tropical and subtropical regions. It is characterized by changes in the intestinal structure and function, which can lead to malabsorption and malnutrition, particularly in children.

Pathophysiology

Tropical enteropathy is believed to result from chronic exposure to fecal-oral contamination, leading to repeated infections and inflammation of the gut. This condition is marked by:

• Villous atrophy: Shortening of the intestinal villi, which reduces the surface area for nutrient absorption.
• Crypt hyperplasia: Increased depth of the intestinal crypts, which is a compensatory response to villous atrophy.
• Increased intestinal permeability: Often referred to as "leaky gut," this allows larger molecules and pathogens to pass through the intestinal barrier.

Clinical Features

Unlike other forms of enteropathy, tropical enteropathy is often subclinical, meaning it does not present with overt symptoms. However, it can lead to:

• Growth faltering: Particularly in children, due to malabsorption of nutrients.
• Nutrient deficiencies: Such as iron, zinc, and vitamin A deficiencies.
• Increased susceptibility to infections: Due to impaired gut barrier function.

Diagnosis

Diagnosis of tropical enteropathy is challenging due to its subclinical nature. It often involves:

• Biopsy of the small intestine: To observe histological changes such as villous atrophy and crypt hyperplasia.
• Lactulose-mannitol test: A non-invasive test to assess intestinal permeability.

Management

There is no specific treatment for tropical enteropathy, but management focuses on:

• Improving sanitation and hygiene: To reduce exposure to fecal-oral pathogens.
• Nutritional interventions: Including supplementation with vitamins and minerals.
• Probiotics and prebiotics: To restore healthy gut flora.

Epidemiology

Tropical enteropathy is prevalent in regions with poor sanitation and hygiene, particularly in:

• Sub-Saharan Africa
• South Asia
• Latin America

Research and Future Directions

Ongoing research aims to better understand the pathogenesis of tropical enteropathy and develop effective interventions. Areas of interest include:

• Microbiome studies: To explore the role of gut flora in the development of the condition.
• Nutritional studies: To identify effective dietary interventions.

See Also

• Malabsorption
• Environmental enteric dysfunction
• Intestinal permeability

External Links

• [World Health Organization - Tropical Enteropathy](https://www.who.int)
• [Centers for Disease Control and Prevention - Enteric Diseases](https://www.cdc.gov)

NIH genetic and rare disease info

• NIH info on Tropical enteropathy

Tropical enteropathy is a rare disease.