期刊
BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE
卷 12, 期 -, 页码 -出版社
BMC
DOI: 10.1186/1472-6882-12-176
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Background: In the present study, we tested a 50% ethanolic extract of Orthosiphon stamineus plants and its isolated bioactive compound with respect to their alpha-glucosidase and alpha-amylase inhibitory activities. Methods: Bioactive flavonoid sinensetin was isolated from 50% ethanolic extract of Orthosiphon stamineus. The structure of this pure compound was determined on the NMR data and the alpha-glucosidase and alpha-amylase inhibitory activities of isolated sinensetin and 50% ethanolic extract of Orthosiphon stamineus were evaluated. Results: In vitro studies of a 50% ethanolic extract of O. stamineus and the isolated sinensetin compound showed inhibitory activity on alpha-glucosidase (IC50: 4.63 and 0.66 mg/ml, respectively) and alpha-amylase (IC50: 36.70 mg/ml and 1.13 mg/ml, respectively). Inhibition of these enzymes provides a strong biochemical basis for the management of type 2 diabetes via the control of glucose absorption. Conclusion: Alpha-glucosidase and alpha-amylase inhibition could the mechanisms through which the 50% ethanolic extract of O. stamineus and sinensetin exert their antidiabetic activity, indicating that it could have potential use in the management of non-insulin-dependent diabetes.
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