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在体血管微透析技术的建立及对大鼠体内丹参素药动学参数的研究
引用本文:吕良,张恒义.在体血管微透析技术的建立及对大鼠体内丹参素药动学参数的研究[J].中国药学杂志,2010,45(11):849-852.
作者姓名:吕良  张恒义
作者单位:浙江大学生物医学工程与仪器科学学院,杭州 310027
摘    要: 目的 建立自由活动大鼠颈静脉血管微透析技术,比较大鼠在麻醉与清醒两种状态下丹参素药动学的差异。方法 设计颈静脉微透析组件,包括颈静脉导管、导管固定装置、阻塞管及软微透析探针,可预先手术将导管插入实验动物颈静脉,另一端用导管固定装置固定在动物背部。另在下肢静脉处植入给药导管,一并在背部固定。 手术恢复后,将微透析探针沿导管插入血管,在动物自由活动状态下进行血液微透析采样。10只SD大鼠分两组,每组5只,作颈静脉微透析预处理后,通过给药导管按40 mg·kg-1单剂量静注丹参素,分别在麻醉与清醒状态自由活动状态下进行血液微透析,应用HPLC紫外检测器测定透析液样品中丹参素浓度,绘制血药浓度-时间曲线,并计算药动学参数。结果 成功获得清醒自由活动状态与麻醉状态下丹参素在大鼠体内的药-时曲线,计算得到大鼠在清醒与麻醉状态下丹参素药动学参数,分别为:AUC0-∞(3 517.3±7 754.5)、(10 739.8±2 458.8) mg·min·L-1;MRT0-∞ (37.0±7.7)、(67.7±3.8) min;t1/2zeta(69.6±33.4)、(123.1±16.1) min;ρmax(290.0±90.3)、(256.4±15.5) mg·L-1CLz(11.7±2.0)、(3.9±1.0) mL·min-1Vssz (423.8±57.0)、(260.9±58.9) mL·kg-1结论 成功建立了自由活动大鼠颈静脉血管微透析技术。应用该技术对丹参素在清醒自由活动和麻醉大鼠体内药动学过程进行了比较研究,结果表明,两种状态下的药动参数有显著性差异。取血等强应激可能影响药动学过程,因此自由活动大鼠血液微透析技术有可能成为药动学研究的重要方法


关 键 词:微透析  丹参素  药动学  麻醉状态  自由活动状态
收稿时间:2012-01-01;

A Novel Blood Microdialysis Technique in Freely Moving Rats and Its Application to the Pharmacokinetics Study of Danshensu
LU Liang,ZHANG Heng-yi.A Novel Blood Microdialysis Technique in Freely Moving Rats and Its Application to the Pharmacokinetics Study of Danshensu[J].Chinese Pharmaceutical Journal,2010,45(11):849-852.
Authors:LU Liang  ZHANG Heng-yi
Institution:College of Biomedical Engineering & Instrumental Science, Zhejiang University,Hangzhou 310027,China
Abstract:OBJECTIVE To develop a novel blood microdialysis technology in freely moving rat, and to compare the difference of the Danshensu pharmacokinetics in anesthetized and awake rats. METHODS A set of blood microdialysis were designed, including flexible microdialysis probe, probe introducer, introducer holder, and introducer holder. Probe guide tube was embedded into jugular vein first, and the other end of the tube was fixed to rat back with the tube base. Flexible microdialysis probe was inserted blood vessel or drawn out through the guide tube freely. So blood was sampled in freely moving rat. With this technique, Danshensu pharmacokinetics in freely moving rat and in anesthesia rat were studied after intravenous injection of a single dosage 40 mg·kg-1.RESULTS A novel blood microdialysis technology in freely moving rat was built successfully. With this technique, the pharmacokinetics of Danshensu in awake rat and in anesthesia rat were obtained AUC0-∞ (3 517.3±7 754.5) and (10 739.8±2 458.8) mg·min·L-1,MRT0-∞(37.0±7.7) and (67.7±3.8) min, t1/2zeta( 69.6±33.4) and (123.1±16.1) min, ρmax(290.0±90.3) and (256.4±15.5) mg·L-1, CLz (11.7±2.0) and (3.9±1.0) mL·min-1, Vssz (423.8±57.0) and (260.9±58.9) mL·kg-1, respectively. CONCLUSION Some stimulation might affect the medicine pharmacokinetics, and blood microdialysis in freely moving rats might be a good tool for pharmacokinetic study.
Keywords:microdialysis technique  Danshensu  pharmacokinetics  anesthetize state  freely moving state
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