代谢
法尼醇通过人体组织微粒体代谢成法尼基葡萄糖苷酸、羟基法尼醇和羟基法尼基葡萄糖苷酸。通过一种灵敏的液相色谱-串联质谱(LC-MS/MS)方法研究了法尼醇的代谢。结果表明,法尼醇是人类肝脏、肾脏和肠道微粒体中葡萄糖苷酸化的良好底物(单位为每毫克每分钟纳摩尔数)。最初的实验使用表达的人UGT酶表明,UGT1A1和2B7是在体外葡萄糖苷酸化的主要酶,其他测试的UGT酶(UGT1A3、1A4、1A6、1A9和2B4)的活性显著较低。动力学分析和抑制实验表明,在肝脏微粒体中,UGT1A1是法尼醇葡萄糖苷酸化的主要酶;然而,在肠道微粒体中,UGT2B7可能是主要涉及的异构体,具有非常低的微摩尔底物浓度(Km)。
Farnesol is metabolized to farnesyl glucuronide, hydroxyfarnesol and hydroxyfarnesyl glucuronide by human tissue microsomes. ... Farnesol metabolism was examined by a sensitive LC (liquid chromatography)-MS/MS method. Results indicate that farnesol is a good substrate for glucuronidation in human liver, kidney and intestine microsomes (values in nmol/min per mg). Initial analysis using expressed human UGTs indicated that UGTs 1A1 and 2B7 were primarily responsible for glucuronidation in vitro, with significantly lower activity for all the other UGTs tested (UGTs 1A3, 1A4, 1A6, 1A9 and 2B4). Kinetic analysis and inhibition experiments indicate that, in liver microsomes, UGT1A1 is primarily responsible for farnesol glucuronidation; however, in intestine microsomes, UGT2B7 is probably the major isoform involved, with a very-low-micromolar K(m). ...
来源:Hazardous Substances Data Bank (HSDB)