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中国临床药理学与治疗学 ›› 2011, Vol. 16 ›› Issue (6): 643-646.

• 临床药理学 • 上一篇    下一篇

金雀异黄酮在体内对CYP3A活性的影响

肖昌琼1, 周宏灏2   

  1. 1湖南省郴州市第一人民医院北院,郴州 423000,湖南;
    2中南大学临床药理研究所,长沙 410078,湖南
  • 收稿日期:2011-04-20 修回日期:2011-05-13 发布日期:2011-07-25
  • 通讯作者: 周宏灏,男,教授,中国工程院院士,研究方向:遗传药理学与药物基因组学。 Tel: 0731-4805380 E-mail: hhzhou2003@163.com
  • 作者简介:肖昌琼,女,硕士,主管药师,研究方向:药物基因组学及临床药理。 Tel: 13762597951 E-mail: xiaochangqiong2000@163.com
  • 基金资助:
    国家自然科学基金(30528026,30300428,30672497,30500623);纽约中华医学会基金(01-755)

Effects of genistein on cytochrome P450 3A activity in healthy volunteers

XIAO Chang-qiong1, ZHOU Hong-hao2   

  1. 1 North Hospital, First People's Hospital of Chenzhou City, Chenzhou 423000,Hunan,China;
    2 Pharmacogenetics Research Institute, Institute of Clinical Pharmacology, Central South University, Hunan 410078, Changsha, China
  • Received:2011-04-20 Revised:2011-05-13 Published:2011-07-25

摘要: 目的: 阐明金雀异黄酮在体内对细胞色素氧化酶P-4503A(CYP3A)活性的影响。方法: 本试验采用双周期交叉临床试验。临床试验按照两阶段交叉方案进行。第一阶段随机分成的2组受试者随机给予金雀异黄酮片或安慰剂处理 14 d,第15天给所有受试者米哒唑仑探针药,经过 14 d 洗脱期后交叉重复试验,分别以0~36 h 血浆中米哒唑仑的血浆曲线下面积、半衰期作为CYP3A的活性指标。HPLC测定其活性。服药后0~36 h 血中咪达唑仑以及1'-羟基咪达唑仑用HPLC-MS/MS方法测定。结果: 经金雀异黄酮处理后,咪达唑仑AUC0-36 h明显降低[(144±55) ng·mL-1·h vs (126±40) ng·mL-1·h,P<0.05] ,AUC0-∞显著降低[(209±57) vs (181±43) ng·mL-1·h,P<0.05] ,Cmax显著降低[(49±20) vs (36±14),P<0.05] 。结论: 金雀异黄酮对体内CYP3A酶活性具有显著的诱导作用,应当关注经CYP3A代谢的药物与金雀异黄酮合用时可能发生的潜在的药物相互作用。

关键词: 金雀异黄酮, CYP3A酶活性, 药代动力学

Abstract: AIM: To examine the potential effects of genistein on CYP3A activity. METHODS: The experiment was conducted in an open, randomized, 2-period crossover study. The probe drug midazolam was used as an indicator of CYP3A function. Every volunteer was administered orally, once a day for 14 days, genistein 1000 mg or placebo(control).On 15th day, a 7.5 mg midazolam was administrated orally. The plasma concentration of midazolam, 1-OH midazolam was determined over 36 h. RESULTS: Coadministration of genistein obviously decreased the area under the curve AUC0-36 of midazolam [(144±55) ng·mL-1·h vs (126±40) ng·mL-1·h,P<0.05] , and significantly decreased AUC0-∝ of midazolam[(209±57) vs (181±43) ng·mL-1·h,P<0.05] ,and also decreased Cmax of midazolam[(49±20) vs (36±14),P<0.05] . CONCLUSION: Genistein, a principal isoflavone in soybean, in regular doses may induce CYP3A activity in vivo, and it should be aware of potential drug-food interactions.

Key words: Genistein, CYP3A activity, Pharmacokinetics

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