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  • Title: Inhibition of disaccharide digestion in rat intestine by the alpha-glucosidase inhibitor acarbose (BAY g 5421).
    Author: Krause HP, Keup U, Puls W.
    Journal: Digestion; 1982; 23(4):232-8. PubMed ID: 6754513.
    Abstract:
    Administration of the alpha-glucosidase inhibitor, acarbose (BAY g 5421), to rats together with a sucrose load results in a marked retardation of sucrose digestion. The carbohydrate content of the small intestine is dose dependently increased; the time needed for the absorption is doubled. In the large intestine significant amounts of carbohydrate can be found only after administration of high doses of acarbose (2-4 mg/kg p.o.). In oral sucrose and maltose loading tests the blood glucose increase is dose dependently reduced by acarbose (ED50, 1 or 12 mg/kg, respectively). In perfused jejunal loops of rats, acarbose inhibits the absorption of sucrose (4 g/l) and maltose (1 and 2 g/l), the IC50 values being 3.2, 36, and 57 micrograms/ml, respectively. The data indicate that acarbose effectively inhibits sucrose digestion. It is 10-20 times less effective with maltose as a substrate. Slight malabsorption is induced by acarbose only in doses higher than the ED50.
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