Inhibition of aldose reductase by dihydroflavonols in Engelhardtia chrysolepis and effects on other enzymes.

Experientia Pub Date : 1996-06-15 DOI:10.1007/BF01969729
H Haraguchi, I Ohmi, H Masuda, Y Tamura, K Mizutani, O Tanaka, W H Chou
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引用次数: 20

Abstract

Astilbin and neoastilbin, dihydroflavonol rhamnosides from Engelhardtia chrysolepis, showed potent inhibition of lens aldose reductase. Kinetic analysis showed astilbin exhibited uncompetitive inhibition against both dl-glyceraldehyde and NADPH. These taxifolin glycosides were selective inhibitors of aldose reductase with no inhibition of NADH oxidase.

二氢黄酮醇对黄颡鱼醛糖还原酶的抑制及其对其他酶的影响。
黄芪二氢黄酮醇鼠李糖苷中降糖素和新降糖素对晶状体醛糖还原酶有较强的抑制作用。动力学分析表明,对dl-甘油醛和NADPH均表现出非竞争性抑制作用。这些杉木苷是醛糖还原酶的选择性抑制剂,对NADH氧化酶无抑制作用。
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