Related Experiment Video
Updated: Jul 7, 2026

A Neonatal BALB/c Mouse Model of Necrotizing Enterocolitis
Published on: November 30, 2021
Intestinal permeability, mucosal injury, and growth faltering in Gambian infants
P G Lunn1, C A Northrop-Clewes, R M Downes
1Medical Research Council Dunn Nutrition Centre, Cambridge, UK.
Insights
Children in developing countries may not fully recover growth after diarrhea due to persistent intestinal damage. This study links small bowel mucosal abnormalities to impaired growth in Gambian infants, explaining significant growth faltering.
Area of Science:
- Pediatrics
- Gastroenterology
- Global Health
Background:
- Diarrhea is a major cause of childhood illness in developing countries.
- Catch-up growth potential after illness is debated, with mucosal injury being a key factor.
- Assessing intestinal integrity is crucial for understanding growth faltering.
Purpose of the Study:
- To investigate the relationship between intestinal disease and growth performance in young children.
- To determine if persistent intestinal abnormalities affect catch-up growth after diarrhea.
- To quantify the contribution of long-term intestinal lesions to growth faltering.
Main Methods:
- A longitudinal study involving 2-15 month old Gambian infants.
- Regularly administered lactulose:mannitol permeability tests to assess intestinal integrity.
- Continuous monitoring of infant growth rates over a mean period of 7.5 months.
Main Results:
- Persistent abnormalities in the small bowel mucosa were identified in the study population.
- A significant negative correlation was observed between intestinal mucosal abnormalities and infant growth.
- Long-term intestinal lesions were found to explain up to 43% of observed growth faltering.
Conclusions:
- Persistent small bowel mucosal lesions are prevalent in young Gambian children.
- Intestinal integrity is a critical determinant of growth performance in this population.
- Targeting intestinal health may be essential for improving child growth in developing countries.
Abstract:
There is controversy over whether children in developing countries can catch up on their growth rates after bouts of diarrhoea. A factor influencing catch-up growth is the extent and duration of mucosal injury. To explore the relation between intestinal disease and growth performance, a non-invasive test of intestinal integrity, the lactulose:mannitol permeability test, was done regularly on children aged 2-15 months, whose growth was monitored over a mean of 7.5 months. The study revealed persistent abnormalities in the small bowel mucosa of 2-15 month old Gambian infants and a negative correlation between these abnormalities and growth. Up to 43% of observed growth faltering can be explained on the basis of these long-term intestinal lesions.
Related Concept Videos
Anatomy of the Intestines
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the small...
Inborn Errors of Metabolism
Pharmacokinetics in Pediatric Patients: Overview and Drug Absorption
Development of Human Microbiota
Development of the Oral Microbiota
Intestinal Obstruction II: Pathophysiology

