利用现代多维联用色谱技术,研究不同配伍情况下茵陈蒿汤口服后体内成分及其动态变化规律,阐明茵陈蒿汤有效成分的体内命运,阐释了该方药物代谢层面的配伍意义;同时利用代谢组学对整体代谢轮廓的描述,评价复杂性多元(方剂成分及代谢产物...利用现代多维联用色谱技术,研究不同配伍情况下茵陈蒿汤口服后体内成分及其动态变化规律,阐明茵陈蒿汤有效成分的体内命运,阐释了该方药物代谢层面的配伍意义;同时利用代谢组学对整体代谢轮廓的描述,评价复杂性多元(方剂成分及代谢产物)输入的调整带来整体效应的变化,最大限度从对证侯的整体效应变化层面揭示配伍意义。在此基础上,提出了中医方剂药物代谢组学(pharmacometabolomics of chinmediformulae)的概念。展开更多
The electrochemical behavior of N,N-diethyl-p-nitroso aniline was carried out using SWV （square wave voltammetric） at HMDE. A well defined reduction peak was observed at （-0.214） volt versus the reference electro...The electrochemical behavior of N,N-diethyl-p-nitroso aniline was carried out using SWV （square wave voltammetric） at HMDE. A well defined reduction peak was observed at （-0.214） volt versus the reference electrode （Ag/AgC1/sat. KCI）, calibration curve was constructed in phosphate buffer （pH = 7.0）, the relationship is linear within the concentration range 1.283 × 10.5 M - 3.66 × 10.5 M with the correlation （R = 0.9923）. The serial addition ofCPM （chlorpheniramine maleate） leads to the decrease in the reduction current peak （Ip）, quantitatively, the plot of Alp （Ip - Ip） where, Ip： Peak current of N, N-diethyl-p-nitroso aniline alone, lp： peak current of N,N-diethyl-p-nitroso aniline in the presence of CPM, versus concentration is linear within the concentration range 0.984 × 10-6 M - 9.756 × 10-6 M, the correlation coefficient was 0.9954. The method was successfully applied to determine CPM in different types of pharmaceutical formulations, and compared with standard method from British Pharmacopeia [1].展开更多
Differential electrolytic potentiometry （DEP） was coupled with Flow injection analysis （FIA） technique for the determination of Procainamide in pharmaceutical preparations. Platinum electrodes were used as an indi...Differential electrolytic potentiometry （DEP） was coupled with Flow injection analysis （FIA） technique for the determination of Procainamide in pharmaceutical preparations. Platinum electrodes were used as an indicating system to follow the oxidation of Procainamide with cerium（IV）, and permanganate in an acidic medium. The oxidation reactions of Procainamide with Ce（IV） and/or permanganate are fast enough to permit its determination by flow injection in sulfuric acid media. The univariate method was employed to optimize the variables such as the current density, the flow rate, the oxidant concentration and the concentration of sulfuric acid. The proposed method was linear in the range 20-100 μg.mL^-1 , the DL and R2 values were 12 μg.mL^-1 and 0.995 respectively. The procedure was applied successfully to the determination of Procainamide in commercial tablets. The results of this study were favorably compared statistically with those obtained with official methods.展开更多
目的利用复杂网络技术分析中医药治疗冠心病室性心律失常的证候、治法和药物之间的关系,挖掘其用药规律。方法采用病证结合的方法,基于冠心病个体化诊疗信息平台,调取386例冠心病室性心律失常住院患者的临床信息,利用SQL Server 2000工...目的利用复杂网络技术分析中医药治疗冠心病室性心律失常的证候、治法和药物之间的关系,挖掘其用药规律。方法采用病证结合的方法,基于冠心病个体化诊疗信息平台,调取386例冠心病室性心律失常住院患者的临床信息,利用SQL Server 2000工具对人口学资料、一般临床特点、证候、治法及方药数据进行转换、加载,利用Business Objects软件进行冠心病室性心律失常临床需求的多维主题查询、分析及Web多维分析;利用Oracle Database 10g实现冠心病室性心律失常证候分布、遣方用药规律的挖掘分析。以证候、治法、中药及其功效作用网络节点建立复杂网络图,通过计算机分析与处理,将反复出现的证候-中药、药物-功效等关系连接成网络结构,即复杂网络分析。结果通过复杂网络方法挖掘发现,冠心病室性心律失常的证候主要以气虚、血瘀、痰浊为主;药物-证候复杂网络图分析发现:血瘀证,多用丹参、当归、赤芍、川芎、红花、桃仁等活血药;气虚证,多用茯苓、甘草等补气健脾药;痰浊证,多用半夏、陈皮等祛痰化浊药。结论通过复杂网络分析,挖掘出冠心病室性心律失常主要以补气、活血、化痰为主要治法,为临床用药提供一定指导。展开更多
文摘利用现代多维联用色谱技术,研究不同配伍情况下茵陈蒿汤口服后体内成分及其动态变化规律,阐明茵陈蒿汤有效成分的体内命运,阐释了该方药物代谢层面的配伍意义;同时利用代谢组学对整体代谢轮廓的描述,评价复杂性多元(方剂成分及代谢产物)输入的调整带来整体效应的变化,最大限度从对证侯的整体效应变化层面揭示配伍意义。在此基础上,提出了中医方剂药物代谢组学(pharmacometabolomics of chinmediformulae)的概念。
文摘The electrochemical behavior of N,N-diethyl-p-nitroso aniline was carried out using SWV （square wave voltammetric） at HMDE. A well defined reduction peak was observed at （-0.214） volt versus the reference electrode （Ag/AgC1/sat. KCI）, calibration curve was constructed in phosphate buffer （pH = 7.0）, the relationship is linear within the concentration range 1.283 × 10.5 M - 3.66 × 10.5 M with the correlation （R = 0.9923）. The serial addition ofCPM （chlorpheniramine maleate） leads to the decrease in the reduction current peak （Ip）, quantitatively, the plot of Alp （Ip - Ip） where, Ip： Peak current of N, N-diethyl-p-nitroso aniline alone, lp： peak current of N,N-diethyl-p-nitroso aniline in the presence of CPM, versus concentration is linear within the concentration range 0.984 × 10-6 M - 9.756 × 10-6 M, the correlation coefficient was 0.9954. The method was successfully applied to determine CPM in different types of pharmaceutical formulations, and compared with standard method from British Pharmacopeia [1].
文摘Differential electrolytic potentiometry （DEP） was coupled with Flow injection analysis （FIA） technique for the determination of Procainamide in pharmaceutical preparations. Platinum electrodes were used as an indicating system to follow the oxidation of Procainamide with cerium（IV）, and permanganate in an acidic medium. The oxidation reactions of Procainamide with Ce（IV） and/or permanganate are fast enough to permit its determination by flow injection in sulfuric acid media. The univariate method was employed to optimize the variables such as the current density, the flow rate, the oxidant concentration and the concentration of sulfuric acid. The proposed method was linear in the range 20-100 μg.mL^-1 , the DL and R2 values were 12 μg.mL^-1 and 0.995 respectively. The procedure was applied successfully to the determination of Procainamide in commercial tablets. The results of this study were favorably compared statistically with those obtained with official methods.
