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Original Articles

Isoflavones Inhibit 3-Hydroxy-3-methylglutaryl Coenzyme A Reductase in Vitro

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Pages 428-432 | Received 14 Jul 2003, Accepted 10 Oct 2003, Published online: 22 May 2014
 

Abstract

Isoflavones identified as inhibitors of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase in soybean paste were assayed using the catalytic portion of Syrian hamster HMG-CoA reductase, and the kinetic values were measured using HMG-CoA and NADPH. The inhibition of HMG-CoA reductase by these inhibitors was competitive with HMG-CoA and noncompetitive with NADPH. K i values for genistein, daidzein, and glycitein were 27.7, 49.5, and 94.7 μM, respectively.

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