代谢
拉索昔芬的I相氧化主要通过肝脏中的CYP3A4/CYP3A5和CYP2D6进行,占总代谢的近一半。II相结合反应包括葡萄糖苷酸化和硫酸化。其葡萄糖苷酸化由在肝脏(UGT1A1、UGT1A3、UGT1A6和UGT1A9)和肠道(UGT1A8和UGT1A10)表达的UGT酶催化。在血浆中检测到的拉索昔芬进一步代谢物是羟基化代谢物的葡萄糖苷酸和甲基化儿茶酚。
Phase I oxidation via hepatic CYP3A4/CYP3A5 and CYP2D6 accounts for nearly half of total metabolism of lasofoxifene. Phase II conjugation reactions include glucuronidation and sulfation. Its glucuronidation is catalyzed by UGTs that are expressed in both the liver (UGT1A1, UGT1A3, UGT1A6, and UGT1A9) and the intestine (UGT1A8 and UGT1A10). Further metabolites of lasofoxifene detected in plasma are the glucuronide of a hydroxylated metabolite, and the methylated catechols.
来源:DrugBank