代谢
大鼠研究中,使用洛贝格列酮的研究表明,它主要通过细胞色素P450(CYP)同工酶进行代谢,然而,具体参与其代谢的酶尚未被阐明。洛贝格列酮的五个主要代谢物的结构已被表征,连同它们的药代动力学参数,可以在下文的代谢部分看到。在大鼠研究中,脱甲基化和羟基化似乎是其主要的代谢途径。在这些研究中发现的最丰富代谢物被体内确认为M1,是洛贝格列酮的一个脱甲基衍生物;其形成速率被发现大约为0.216 ∼ 0.252 mL/min/kg,在大鼠体内大约代表总洛贝格列酮消除的9.76%。
Rat studies with lobeglitazone have suggested that it is primarily metabolized by cytochrome P450 (CYP) isozymes, however the exact enzymes involved in its metabolism have yet to be elucidated. The structure of Lobeglitazone's five major metabolites have been characterized along with their pharmacokinetic parameters, and can be seen in the metabolism section below. In rat studies, demethylation and hydroxylation appear to be the primary metabolic pathways. The most abundant metabolite found in these studies was confirmed in vivo as M1, a demethylated derivative of lobeglitazone; its rate of formation was found to be approximately 0.216 ∼ 0.252 mL/min/kg, representing approximately 9.76% of the total lobeglitazone elimination in vivo in rats.
来源:DrugBank