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Article Publish Status: FREE
Abstract Title:

Potentα-glucosidase and α-amylase inhibitory activities of standardized 50% ethanolic extracts and sinensetin from Orthosiphon stamineus Benth as anti-diabetic mechanism.

Abstract Source:

BMC Complement Altern Med. 2012 Oct 8 ;12:176. Epub 2012 Oct 8. PMID: 23039079

Abstract Author(s):

Elsnoussi Ali Hussin Mohamed, Mohammad Jamshed Ahmad Siddiqui, Lee Fung Ang, Amirin Sadikun, Sue Hay Chan, Soo Choon Tan, Mohd Zaini Asmawi, Mun Fei Yam

Article Affiliation:

Elsnoussi Ali Hussin Mohamed

Abstract:

BACKGROUND: In the present study, we tested a 50% ethanolic extract of Orthosiphon stamineus plants and its isolated bioactive compound with respect to theirα-glucosidase and α-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 theα-glucosidase and α-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 onα-glucosidase (IC50: 4.63 and 0.66 mg/ml, respectively) and α-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 andα-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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