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Disaccharide digestion and maldigestion
1Dept. of Medical Gastroenterology F, Gentofte University Hospital, Copenhagen, Denmark.
Scandinavian Journal of Gastroenterology. Supplement
|January 1, 1996
Summary
Most adults worldwide experience lactase deficiency, impacting carbohydrate digestion. Other disaccharide maldigestion syndromes, like sucrase-isomaltase and trehalose deficiency, are rare except in specific populations.
Area of Science:
- Human physiology
- Gastroenterology
- Biochemistry
Background:
- Carbohydrate digestion relies on small intestinal brush border enzymes to hydrolyze complex sugars into monosaccharides.
- Key enzymes include sucrase-isomaltase, lactase phlorizinhydrolase, maltase-glycoamylase, and trehalase.
Purpose of the Study:
- To investigate the distribution of small intestinal brush border enzymes.
- To describe different disaccharide maldigestion syndromes and their prevalence.
Main Methods:
- Enzyme distribution analysis in the small intestine.
- Review of clinical descriptions and prevalence data for maldigestion syndromes.
Main Results:
- Lactase deficiency is prevalent in the global adult population, with significant variations between ethnic groups.
- Congenital sucrase-isomaltase deficiency and trehalose maldigestion are rare, with notable exceptions in Greenlandic populations.
Conclusions:
- Disaccharide maldigestion syndromes have diverse etiologies and population-specific prevalences.
- Further research into the molecular basis of these conditions is warranted.