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Abstract Title:

Discovering Bisdemethoxycurcumin from Curcuma longa rhizome as a potent small molecule inhibitor of human pancreaticα-amylase, a target for type-2 diabetes.

Abstract Source:

Food Chem. 2012 Dec 15 ;135(4):2638-42. Epub 2012 Jul 13. PMID: 22980852

Abstract Author(s):

Sudha Ponnusamy, Smita Zinjarde, Shobha Bhargava, P R Rajamohanan, Ameeta Ravikumar

Article Affiliation:

Institute of Bioinformatics and Biotechnology, University of Pune, Pune 411 007, Maharashtra, India.

Abstract:

Curcuma longa rhizome is used extensively in culinary preparations in Far East and South-East Asia. Health benefits of curcuminoids from C. longa as antioxidants, anti-cancer and anti-inflammatory molecules have been well documented. We report here for the first time that Bisdemethoxycurcumin (BDMC) from C. longa, acts as an inhibitor to inactivate human pancreaticα-amylase, a therapeutic target for oral hypoglycemic agents in type-2 diabetes. Bioactivity guided isolation of rhizome isopropanol extract led to the identification by HPLC and NMR of BDMC as a lead small molecule inhibitor of porcine and human pancreatic α-amylase with an IC(50) value of 0.026and 0.025mM, respectively. Kinetic analysis revealed that using starch as the substrate, HPA exhibited an uncompetitive mode of inhibition with an apparent K(i) of 3.0μM. The study gains importance as BDMC could be a good drug candidate in development of new inhibitors of HPA and of functional foods for controlling starch digestion in order to reduce post-prandial hyperglycemia.

Study Type : In Vitro Study

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