TM208在大鼠肝微粒体中代谢产物与细胞色素P450亚型代谢酶鉴别研究(英文)

Identification of the metabolite and cytochrome P450 isoforms involved in rat liver microsomal metabolism of TM208

在大鼠肝微粒体的体外代谢中研究作用于TM208的细胞色素P450亚型代谢酶。以不含细胞色素P450化学抑制剂的样品为对照,研究不同细胞色素P450亚型选择性化学抑制剂对TM208代谢转化率的影响。CYP2D和CYP2B的选择性抑制剂对TM208的代谢表现出浓度依赖性较强抑制作用,CYP1A的选择性抑制剂对TM208的代谢表现出一定抑制作用。CYP3A的选择性抑制剂对TM208的代谢没有表现出明显的抑制作用。TM208在大鼠肝微粒体体外代谢中主要通过CYP2D和CYP2B两种细胞色素P450亚型代谢酶参与代谢。

To identify the metabolite and CYP450 isoforms involved in rat liver microsomal metabolism of TM208. The present study investigated the metabolism of TM208 and the effects of selective CYP450 inhibitors on the metabolism of TM208 in rat liver microsomes. Various specific inhibitors of CYP were used to identify the isoforms of CYP involved in the metabolism of TM208. The inhibitor of CYP2D and that of CYP2B had strong inhibitory effects on TM208 metabolism in a concentration-de- pendant manner, the inhibitor of CYP1A had a modest inhibitory effect, and the inhibitor of CYP3A seemed not to have an obvious inhibitory effect on TM208 metabolism. TM208 might mainly be metabolized by CYP2D and CYP2B in rat liver microsomes.