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中国药学(英文版) ›› 2020, Vol. 29 ›› Issue (4): 272-279.DOI: 10.5246/jcps.2020.04.026

• 【研究论文】 • 上一篇    下一篇

CYP3A4基因多态性对健康受试者体内替硝唑药代动力学的影响

常馨予1*, 郭涛2, 郭桂明1   

  1. 1. 首都医科大学附属北京中医医院 临床药学科, 北京 100010
    2. 沈阳军区总医院 药剂科, 辽宁 沈阳 110016
  • 收稿日期:2019-11-25 修回日期:2019-12-06 出版日期:2020-04-30 发布日期:2020-01-10
  • 通讯作者: Tel.: +86-10-52177321, E-mail: xinyu_chang@163.com
  • 基金资助:
    The Research Grant from the 115 Project of Legionary Medical Treatment and Public Health (Grant No. 06G023).

Effect of CYP3A4 genetic polymorphisms on pharmacokinetics of tinidazole

Xinyu Chang1*, Tao Guo2, Guiming Guo1   

  1. 1. Department of Clinical Pharmacy, Beijing Traditional Chinese Medicine Hospital, Capital Medical University, Beijing100038, China
    2. Department of Pharmacy, the General Hospital of Shenyang Military Region, Shenyang 110015, China
  • Received:2019-11-25 Revised:2019-12-06 Online:2020-04-30 Published:2020-01-10
  • Contact: Tel.: +86-10-52177321, E-mail: xinyu_chang@163.com
  • Supported by:
    The Research Grant from the 115 Project of Legionary Medical Treatment and Public Health (Grant No. 06G023).

摘要:

研究中国汉族人群CYP3A4*18B基因多态性的频率, 并探讨CYP3A4*18B基因多态性对替硝唑药代动力学的影响。本研究共招募100名来自中国汉族的健康志愿者, 采用PCR-RFLP方法检测CYP3A4*18B的基因多态性。选择CYP3A4*1/*1 (n = 10)野生型受试者和CYP3A4*1/*18B (n = 9)突变杂合型受试者进行替硝唑的药代动力学研究。单剂量口服替硝唑片剂后采集72 h内的血样, 使用高效液相色谱法测定血浆样本中替硝唑的浓度。发现88名健康志愿者携带CYP3A4*1/*1基因型, 12人携带CYP3A4*1/*18B基因型, 未发现携带CYP3A4*18B/*18B基因型。CYP3A4*18B等位基因频率为6%CYP3A4*1/*1基因型和CYP3A4*1/*18B基因型受试者体内的药动学参数分别为: t1/2: (15.92±1.62), (15.77±1.67) h; Cmax: (18.72±3.10), (20.25±3.42) mg/L; tmax: (1.50±0.66), (1.45±0.69) h; Vd/F: (55.73±10.66), (51.30±7.75) L; CL/F: (2.44±0.47),(2.26±0.30) L·h; AUC0: (424.40±82.38), (450.53±69.48) mg·h/L。研究发现CYP3A4*18B基因多态性对替硝唑健康志愿者的药代动力学无明显影响。

关键词: 替硝唑, CYP3A4, 药动学

Abstract:

In the present study, we aimed to investigate the frequency of CYP3A4*18B genetic polymorphism in Han Chinese populations, and to assess the effect of the CYP3A4*18B genetic polymorphism on the pharmacokinetics of tinidazole. A total of 100 healthy volunteers from Han nationalities in China were recruited. DNA was extracted from peripheral leukocytes using a standard protocol. A PCR-RFLP method was developed to detect the alleles of CYP3A4*18B. A pharmacokinetic study of tinidazole was then carried out in two groups with CYP3A4*1/*1 (n = 10) and CYP3A4*1/*18B (n = 9) genotypes. Concentrations of tinidazole were determined using high-performance liquid chromatography in plasma samples that were collected up to 72 h after drug intake. In this study, 88 healthy volunteers were found with CYP3A4*1/*1 genotype, and 12 were found with CYP3A4*1/*18Bgenotype. CYP3A4*18B/*18B were absent from all subjects. The allele frequencies of CYP3A4*18B were 6%. The pharmacokinetic parameters of CYP3A4*1/*1 genotype and CYP3A4*1/*18B genotype in healthy subjects were as follows: t1/2: (15.92±1.62), (15.77±1.67) h; Cmax: (18.72±3.10), (20.25±3.42) mg/L; tmax: (1.50±0.66), (1.45±0.69) h; Vd/F: (55.73±10.66), (51.30±7.75) L; CL/F: (2.44±0.47), (2.26±0.30) L·h; AUC0: (424.40±82.38), (450.53±69.48) mg·h/L. Collectively, the CYP3A4*18B genetic polymorphism did not affect pharmacokinetics of tinidazolein healthy volunteers.

Key words: Tinidazole, CYP3A4, Pharmacokinetics

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