Aim To develop and validate a liquid chromatographic/tandem mass spectrometric (LC/MS/MS) method for the simultaneous quantitation of pseudoephedrine and diphenhydramine in human plasma after oral administration of co...Aim To develop and validate a liquid chromatographic/tandem mass spectrometric (LC/MS/MS) method for the simultaneous quantitation of pseudoephedrine and diphenhydramine in human plasma after oral administration of compound preparation. Methods Samples spiked with the analytes and the internal standard, chlorphenamine, were processed using liquid-liquid extraction. The extract was chromatographed on a Diamonsil C 18 column. The mobile phase consisted of methanol-water-formic acid (70∶30∶1), at a flow rate of 0.65 mL·min -1 . A Finnigan TSQ tandem mass spectrometer equipped with atmospheric pressure chemical ionization source was used as detector and was operated in the positive ion mode. Selected reaction monitoring (SRM) using the precursor/product ion combinations of m/z 166→148 and m/z 256→167 were used to quantify pseudoephedrine and diphenhydramine, respectively. Results The linear concentration ranges of the calibration curves for pseudoephedrine and diphenhydramine were both 2.0-400.0 μg·L -1 . The lower limit of quantification of both analytes was 2.0 ng·mL -1 . Each sample was chromatographed within 3.9 min. Conclusion The method was successfully used in simultaneous determination of pseudoephedrine and diphenhydramine in human plasma after oral administration of a compound preparation containing 60 mg pseudoephedrine chloride and 50 mg diphenhydramine chloride. The method was shown to be suitable for clinical investigation of pseudoephedrine and diphenhydramine pharmacokinetics.展开更多
目的:建立灵敏、快速的液相色谱-串联质谱法同时测定人血浆中金刚烷胺和氯苯那敏,并应用于人体的药物动力学研究。方法:0.5 mL 血浆样品经液液萃取后,以甲醇-水-甲酸(80:20:0.5)为流动相,采用 Zorbax SB-C_(18)柱分离,通过大气压化学离...目的:建立灵敏、快速的液相色谱-串联质谱法同时测定人血浆中金刚烷胺和氯苯那敏,并应用于人体的药物动力学研究。方法:0.5 mL 血浆样品经液液萃取后,以甲醇-水-甲酸(80:20:0.5)为流动相,采用 Zorbax SB-C_(18)柱分离,通过大气压化学离子化三重四极杆串联质谱,以选择离子反应监测(SRM)方式进行检测。结果:金刚烷胺和氯苯那敏测定方法的线性范围分别为2.0～800μg·L^(-1)和0.10～40.0μg·L^(-1);定量下限分别为2.0μg·L^(-1)和0.10μg·L^(-1),该方法被成功用于临床药物动力学研究。结论:该法灵敏度高,操作简便,分析速度快,适用于含有金刚烷胺和氯苯那敏的复方感冒制剂的临床药物动力学研究。展开更多
治疗药物监测(Therapeutic Drug Monitoring,TDM)通过定量测定和解释血药浓度以优化药物治疗。TDM着眼于药代动力学的个体差异,使个体化药物治疗成为可能。在精神病学和神经病学领域中,有可能明显获益于TDM的主要患者群体包括少年儿童...治疗药物监测(Therapeutic Drug Monitoring,TDM)通过定量测定和解释血药浓度以优化药物治疗。TDM着眼于药代动力学的个体差异,使个体化药物治疗成为可能。在精神病学和神经病学领域中,有可能明显获益于TDM的主要患者群体包括少年儿童、孕妇、老年患者、智障患者、药物滥用者、涉法精神病患者、已知或怀疑药代动力学异常的患者以及合并躯体疾病影响药代动力学的患者。常规剂量下治疗无效,用药依从性难以判断,药物耐受性不佳,以及可能存在药代动力学方面的药物-药物相互作用等情况都是治疗药物监测的典型指征。然而,只有将TDM充分整合到临床治疗过程中,才能发挥其优化药物治疗的潜在优势。为了向临床医生和实验室提供有效的TDM信息,神经精神药理学与药物精神病学协会(Arbeitsgemeinschaft für Neuropsychopharmakologie und Pharmakopsychiatrie,AGNP)的TDM专家组在2004年发表了第一版《精神科治疗药物监测指南》。2011年进行了更新之后,现在再次更新。遵循新版指南,可能会改善神经精神药物治疗的效果,加快很多患者的康复,并降低医疗费用。展开更多
文摘Aim To develop and validate a liquid chromatographic/tandem mass spectrometric (LC/MS/MS) method for the simultaneous quantitation of pseudoephedrine and diphenhydramine in human plasma after oral administration of compound preparation. Methods Samples spiked with the analytes and the internal standard, chlorphenamine, were processed using liquid-liquid extraction. The extract was chromatographed on a Diamonsil C 18 column. The mobile phase consisted of methanol-water-formic acid (70∶30∶1), at a flow rate of 0.65 mL·min -1 . A Finnigan TSQ tandem mass spectrometer equipped with atmospheric pressure chemical ionization source was used as detector and was operated in the positive ion mode. Selected reaction monitoring (SRM) using the precursor/product ion combinations of m/z 166→148 and m/z 256→167 were used to quantify pseudoephedrine and diphenhydramine, respectively. Results The linear concentration ranges of the calibration curves for pseudoephedrine and diphenhydramine were both 2.0-400.0 μg·L -1 . The lower limit of quantification of both analytes was 2.0 ng·mL -1 . Each sample was chromatographed within 3.9 min. Conclusion The method was successfully used in simultaneous determination of pseudoephedrine and diphenhydramine in human plasma after oral administration of a compound preparation containing 60 mg pseudoephedrine chloride and 50 mg diphenhydramine chloride. The method was shown to be suitable for clinical investigation of pseudoephedrine and diphenhydramine pharmacokinetics.
文摘目的:建立灵敏、快速的液相色谱-串联质谱法同时测定人血浆中金刚烷胺和氯苯那敏,并应用于人体的药物动力学研究。方法:0.5 mL 血浆样品经液液萃取后,以甲醇-水-甲酸(80:20:0.5)为流动相,采用 Zorbax SB-C_(18)柱分离,通过大气压化学离子化三重四极杆串联质谱,以选择离子反应监测(SRM)方式进行检测。结果:金刚烷胺和氯苯那敏测定方法的线性范围分别为2.0～800μg·L^(-1)和0.10～40.0μg·L^(-1);定量下限分别为2.0μg·L^(-1)和0.10μg·L^(-1),该方法被成功用于临床药物动力学研究。结论:该法灵敏度高,操作简便,分析速度快,适用于含有金刚烷胺和氯苯那敏的复方感冒制剂的临床药物动力学研究。
文摘治疗药物监测(Therapeutic Drug Monitoring,TDM)通过定量测定和解释血药浓度以优化药物治疗。TDM着眼于药代动力学的个体差异,使个体化药物治疗成为可能。在精神病学和神经病学领域中,有可能明显获益于TDM的主要患者群体包括少年儿童、孕妇、老年患者、智障患者、药物滥用者、涉法精神病患者、已知或怀疑药代动力学异常的患者以及合并躯体疾病影响药代动力学的患者。常规剂量下治疗无效,用药依从性难以判断,药物耐受性不佳,以及可能存在药代动力学方面的药物-药物相互作用等情况都是治疗药物监测的典型指征。然而,只有将TDM充分整合到临床治疗过程中,才能发挥其优化药物治疗的潜在优势。为了向临床医生和实验室提供有效的TDM信息,神经精神药理学与药物精神病学协会(Arbeitsgemeinschaft für Neuropsychopharmakologie und Pharmakopsychiatrie,AGNP)的TDM专家组在2004年发表了第一版《精神科治疗药物监测指南》。2011年进行了更新之后,现在再次更新。遵循新版指南,可能会改善神经精神药物治疗的效果,加快很多患者的康复,并降低医疗费用。
