Inhibition of α-glucosidase and glucose intestinal absorption by Thymelaea hirsuta fractions.
J Diabetes 2014;
6:351-9. [PMID:
24219781 DOI:
10.1111/1753-0407.12106]
[Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Revised: 08/29/2013] [Accepted: 11/08/2013] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND
Thymelaea hirsuta (L.) Endl. (Thymelaeaceae) is a medicinal plant used in Morocco to treat diabetes. In previous studies T. hirsuta has shown a potent antihyperglycemic effect. Our aim was to study the effect of the plant on α-glucosidase inhibition and intestinal glucose absorption.
METHODS
Five fractions of T. hirsuta were tested, in vitro, in vivo and, in situ, to elucidate the inhibition of α-glucosidase and intestinal glucose uptake.
RESULTS
The fractions induced, in vitro, a significant inhibition of α-glucosidase. The ethyl acetate fraction (EATh) had high activity and its inhibition mode was non-competitive. The EATh at 50 and 100 mg/kg doses, decreased significantly, in vivo, the postprandial hyperglycemia after sucrose loading in normal and diabetic mice. Moreover, 50 mg/kg of EATh significantly decreased intestinal glucose uptake, in situ, in rats.
CONCLUSION
The antihyperglycemic effect of T. hirsuta can be explained, in part, by the inhibition of intestinal α-glucosidase and intestinal glucose absorption.
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