天然产物研究与开发 ›› 2018, Vol. 30 ›› Issue (9): 1538-1542.doi: 10.16333/j.1001-6880.2018.9.011

• 研究简报 • 上一篇    下一篇

石斛碱在体外肝微粒体代谢的种属差异研究

鲁艳柳,刘浩,曾瑶,黄思,徐亚沙,何芋岐*,陆远富*   

  1. 遵义医学院 基础药理教育部重点实验室暨特色民族药教育部国际合作联合实验室, 遵义 563003
  • 出版日期:2018-10-08 发布日期:2018-10-10
  • 基金资助:

    国家自然科学基金(81660685,81560673,81402985);教育部春晖计划(Z2016003);贵州省科技重大专项(黔科合重大专项字[2015]6010);贵州省科学技术基金(黔科合JZ字[2015]2010号,黔科合J字[2015]2158号);贵州省教育厅自然科学研究项目(黔教合KY字[2015]373号);贵州省留学人员科技创新项目(黔人项目资助合同(2015)03号);遵义医学院优秀青年人才项目(15zy-004)

In Vitro Metabolism of Dendrobine in Liver Microsomes of Different Species

LU Yan-liu,LIU Hao,ZENG Yao,HUANG Si,XU Ya-sha,HE Yu-qi*,LU Yuan-fu*   

  1. Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education,Zunyi Medical University,Zunyi 563003,China
  • Online:2018-10-08 Published:2018-10-10

摘要: 为了在临床前药效和毒理研究中选择与人有相似代谢性质的实验动物,本实验比较了石斛碱在不同种属肝微粒体间的代谢差异。将石斛碱在SD大鼠、C57BL/6J小鼠、家兔、犬、豚鼠和人的肝微粒体中,分别进行I相和II相代谢。通过底物消除法分析代谢稳定性,并计算体外消除半衰期(t1/2)。通过保留时间、精确质量数、二级碎片离子信息以及色谱峰面积,对石斛碱在各种属肝微粒体中生成代谢产物的情况进行分析。结果表明,在I相反应中,石斛碱体外消除半衰期依次为家兔<豚鼠<大鼠<小鼠<犬<人;在II相反应中,石斛碱在人、豚鼠肝微粒体中代谢非常慢,而小鼠最快。石斛碱在人肝微粒体体外I相反应中,生成的代谢产物与小鼠、犬的相似。因此,可以选择小鼠和犬作为临床前药代和毒理研究的模型动物。

关键词: 石斛碱, 肝微粒体, 代谢稳定性, 代谢产物, 种属差异

Abstract: In order to select the experimental animals for preclinical pharmacodynamics and toxicology,the characteristics of dendrobine metabolism in human liver microsomes were compared with the other species.Metabolic stability and metabolites of dendrobine were investigated in the liver microsomes of rat,mouse,rabbit,dog,guinea pig and human.The substrate depletion approach was used to evaluate the metabolic stability,and the half-life (t1/2) was calculated in vitro.The differences in metabolic biotransformation of dendrobine were characterized by metabolite profiling.In the liver microsomal incubation systems of six species,the t1/2 values for phase I were as follows:rabbit < guinea pig < rat < mouse < dog < human.Whereas for phase II,the metabolic rates were the slowest in the liver microsomes of human and guinea pig,and the fastest in mouse liver microsomes.In addition,the metabolites of dendrobine for phase I in human liver microsomes were similar to the mouse and dog liver microsomes incubation system.Based on the results of dendrobine metabolism in vitro,mouse and dog would be selected for the further metabolism study.

Key words: dendrobine, liver microsomes, metabolic stability, metabolite, species difference

中图分类号: 

R285.5 Q946.9