Biotransformation of (−)-Menthone by Human Liver Microsomes
作者:Mitsuo MIYAZAWA、Kyousuke NAKANISHI
DOI:10.1271/bbb.70.1259
日期:2006.5.23
The aim of the current study was to investigate the metabolism of (−)-menthone by liver microsomes of humans. (−)-Menthone (1) was metabolized to (+)-neomenthol (2) (3-reduction) and 7-hydroxymenthone (3) by human liver microsomes. The metabolites formed were analyzed on GC and GC–MS. Kinetic analysis showed that Km and Vmax values for the metabolized (−)-menthone to respective (+)-neomenthol and 7-hydroxymenthone by liver microsomes of human sample HG70 were 0.37 mM and 4.91 nmol/min/mg protein and 0.07 mM and 0.71 nmol/min/mg protein.
本研究的目的是调查人类肝脏微粒体对(-)-孟酮的代谢情况。(人的肝脏微粒体将(-)-孟酮(1)代谢为(+)-新孟醇(2)(3-还原)和 7-羟基孟酮(3)。形成的代谢物通过气相色谱和气相色谱-质谱进行分析。动力学分析表明,人体样本 HG70 的肝脏微粒体将(-)-薄荷酮代谢为各自的(+)-新薄荷醇和 7-羟基薄荷酮的 Km 值和 Vmax 值分别为 0.37 mM 和 4.91 nmol/min/mg,以及 0.07 mM 和 0.71 nmol/min/mg。