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[Failure to thrive in young children--disorders of carbohydrate absorption?]
Insights
Formerly hypotrophic newborns with growth failure showed impaired carbohydrate digestion and absorption, similar to celiac disease patients. This may explain their poor growth despite normal intestinal structure.
Area of Science:
- Pediatric Gastroenterology
- Nutritional Science
- Human Physiology
Context:
- Failure to grow in infancy is a significant concern in pediatric health.
- Hypotrophic newborns, defined by low birth weight, are at risk for subsequent growth issues.
- Celiac disease presents with malabsorption, offering a comparison for growth failure mechanisms.
Purpose:
- To investigate carbohydrate digestion and absorption in formerly hypotrophic newborns with infantile growth failure.
- To compare these digestive and absorptive rates to those observed in children with active celiac disease.
- To determine if impaired carbohydrate metabolism contributes to failure to grow in this population.
Summary:
- Thirty-one formerly hypotrophic newborns with failure to grow were studied.
- Segmental small intestinal perfusion assessed carbohydrate digestion and absorption rates.
- Impaired glucose absorption and reduced lactose/sucrose hydrolysis were observed in a significant subset, comparable to celiac disease patients, despite normal intestinal mucosa.
Impact:
- Identifies a potential mechanism for failure to grow in formerly hypotrophic infants.
- Suggests that carbohydrate malabsorption should be considered in the diagnostic workup of these children.
- Highlights the importance of assessing digestive function in infants with persistent growth issues.
Abstract:
We examined 31 formerly hypotrophic newborn children (birth weight < 5th Kyank percentile) with failure to grow in infancy (weight < 3th Prader percentile). The rates of digestion and absorption of carbohydrates were determined by segmental perfusion of the small intestine and compared to the results of 21 patients with florid coeliac disease. Despite the normal structure of the mucous membrane of the small intestine, the rates of absorption of glucose in 14 formerly hypotrophic children and, additionally, in 12 and 10 of these children, respectively, the rates of hydrolysis of lactose and sucrose were nearly as low as in patients with florid coeliac disease. The reduced absorption and digestion of carbohydrates, respectively, could be a cause of subsequent failure to grow in some of the hypotrophic newborn children.
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