代谢
人体和动物研究的结果表明,鲁比普斯通通过15位还原、α链β氧化和ω链ω氧化被迅速且广泛代谢。这些生物转化不是通过肝脏细胞色素P450系统介导的,而是似乎由普遍表达的羰基还原酶介导。M3是鲁比普斯通在人体和动物中的一个代谢物,它是通过15-羟基部分中的羰基还原形成的,包括α-羟基和β-羟基对映异构体。M3占放射性标记鲁比普斯通剂量的不到10%。
The results of both human and animal studies indicate that lubiprostone is rapidly and extensively metabolized by 15-position reduction, α-chain β-oxidation, and ω-chain ω-oxidation. These biotransformations are not mediated by the hepatic cytochrome P450 system but rather appear to be mediated by the ubiquitously expressed carbonyl reductase. M3, a metabolite of lubiprostone in both humans and animals is formed by the reduction of the carbonyl group at the 15-hydroxy moiety that consists of both α-hydroxy and β-hydroxy epimers. M3 makes up less than 10% of the dose of radiolabeled lubiprostone.
来源:DrugBank