辐射防护通讯 ›› 2021, Vol. 41 ›› Issue (5): 39-43.

• 专题报告 • 上一篇    下一篇

直线加速器单次照射对卡培他滨体内代谢过程的影响

王若琪1, 李建华1, 王志鹏1, 刘欢1, 张国良2, 高洁1   

  1. 1.中国辐射防护研究院GLP中心,太原,030006;
    2.山西白求恩医院肿瘤中心,太原,030032
  • 收稿日期:2021-08-09 出版日期:2021-10-20 发布日期:2022-03-31
  • 通讯作者: 高洁,E-mail:JieGao1989@163.com
  • 作者简介:王若琪(1993—),女,2018年毕业于中国药科大学药学专业,硕士。助理研究员。主要从事新药安全评价研究。
  • 基金资助:
    中国辐射防护研究院院青年基金项目。

Effect of Single-pass Linear Accelerator Radiation on Metablism of Capecitabine in vivo

Wang Ruoqi1, Li Jianhua1, Wang Zhipeng1, Liu Huan1, Zhang Guoliang2, Gao jie1   

  1. 1. GLP Center, China Institute for Radiation Protection,Taiyuan,Shanxi 030006;
    2. Bethune Hospital of Shanxi Province,Taiyuan,0300321
  • Received:2021-08-09 Online:2021-10-20 Published:2022-03-31

摘要: 采用直线加速器单次照射SD大鼠,检测卡培他滨、5-氟尿嘧啶血药浓度和肠单向灌流流出物中卡培他滨浓度,计算CmaxTmaxt1/2AUC和吸收速率常数和药物表观吸收系数。结果表明:(1)分析方法操作简单,可重复性高,可同时测定大鼠血浆样品中原型药物卡培他滨及活性代谢物5-氟尿嘧啶;(2)直线加速器腹部10 Gy单次照射,抑制了卡培他滨在小肠和结肠部位的吸收,导致达峰时间推迟,峰浓度和血药浓度降低,同时排泄加快;没有影响卡培他滨代谢速率。

关键词: 直线加速器, 卡培他滨, 代谢, 液相色谱-串联质谱法

Abstract: The concentration of capecitabine and 5-fluorouracil in blood and the concentration of capecitabine in the intestinal single-pass perfusion effluent were tested by UPLC-MS/MS after single exposure of SD rats by linear accelerator.Cmax,Tmax,t1/2,AUC,absorption rate constant (Ka) and apparent absorption coefficient(Papp) were then calculated. It showes that the testing method is simple and reproducible,and can simultaneously determine the prototype drug capecitabine and active metabolite 5-fluorouracil in rat plasma. Our analysis indicate that the single exposure of 10 Gy in the abdomen of linear accelerator has inhibited the absorption of capecitabine into the blood circulation in the small intestine and colon,resulting in delayed peak reaching time,decreased peak concentration and blood drug concentration,and accelerated excretion,while capecitabine metabolic rate hasn’tbeen affected.

Key words: Linear accelerator, Capecitabine, Metabolism, UPLC-MS/MS

中图分类号: 

  • R818