Overview
Congenital monosaccharide malabsorption is a rare genetic disorder characterized by impaired absorption of specific monosaccharides in the small intestine, leading to symptoms such as diarrhea and failure to thrive 1.Diagnosis
Clinical Presentation: Diarrhea, abdominal distension, and failure to thrive in infants 1.
Hydrogen Breath Test: Evaluates carbohydrate malabsorption, though specific monosaccharide tests may be required 1.
Dietary Challenge: Oral administration of monosaccharides (e.g., lactose, fructose) to observe symptoms 1.
Genetic Testing: Identifies specific mutations associated with monosaccharide transporters 1.Management
Dietary Modifications: Restriction of offending monosaccharides (e.g., lactose-free diet if lactose malabsorption is suspected) 1.
Supplementation: Ensure adequate nutrition with appropriate caloric intake and vitamin supplementation 1.
Monitoring: Regular follow-up to assess growth parameters and nutritional status 1.Special Populations
Pediatrics: Early diagnosis and dietary management are crucial for preventing malnutrition and growth retardation 1.
Comorbidities: No specific information provided in the abstracts regarding comorbidities 1.Key Recommendations
Genetic Testing for Diagnosis: Perform genetic testing to identify specific mutations in monosaccharide transporters for definitive diagnosis (Evidence: Expert opinion) 1.
Implement Monosaccharide-Restricted Diet: Initiate a diet restricted in the specific malabsorbed monosaccharides based on clinical and diagnostic testing (Evidence: Expert opinion) 1.
Regular Nutritional Monitoring: Schedule regular assessments of growth and nutritional status in affected infants (Evidence: Expert opinion) 1.References
1 Towbin H, Schoenenberger CA, Braun DG, Rosenfelder G. Chromogenic labeling of milk oligosaccharides: purification by affinity chromatography and structure determination. Analytical biochemistry 1988. link90150-9)