The emerging development of Extractive Reference Substance (ERS) is a methodology that meets the needs for quality control for Chinese Herbal Medicines (CHM) and respects the holistic viewpoint of Traditional Chinese ...The emerging development of Extractive Reference Substance (ERS) is a methodology that meets the needs for quality control for Chinese Herbal Medicines (CHM) and respects the holistic viewpoint of Traditional Chinese Medicine (TCM) and its clinical use of multiple ingredients with synergistic effects. The convention of using just a selected few Chemical Reference Substances (CRS) cannot adequately assess the quality of intact CHM. A validated chemical spectrum of an ERS provides the global characteristics in order to more specifically identify and assess targeted CHM. This paper describes the fundamental concepts, potential significance, and basic criteria of ERS, along with methods of preparation and calibration. Given the diversity of CHM, the various problems that will occur in establishing the proper process of ERS will need to be solved in a step by step manner. The ERSs of Ziziphi spinosae semen and ERS of Fritillaria thunbergii bulbus are given as examples of the development of ERS and demonstrate why we are optimistic about the utility of this approach.展开更多
Objective:In order to evaluate the reliability and feasibility of pueraria reference extractive substance(RES)used in biological sample,the pharmacokinetics of 3–hydroxy puerarin(3-HP),puerarin,3–methoxy puerarin(3-...Objective:In order to evaluate the reliability and feasibility of pueraria reference extractive substance(RES)used in biological sample,the pharmacokinetics of 3–hydroxy puerarin(3-HP),puerarin,3–methoxy puerarin(3-MP),and daidzein-8-C-apiosyl-(1-6)-glucoside(DAG)in beagle plasma following oral administration of Yufeng Ningxin Tablet were quantitated.Methods:A reliable and sensitive high-performance liquid chromatography-tandem triple quadrupole mass spectrometry(HPLC-QQQ-MS/MS)method developed with chromatographic separation was operated on a Merck C18 column,and acetonitrile-5 mmol/L ammonium was used as mobile phase in gradient elution.The plasma samples were deproteinized by acetone,detected by triple quadrupole mass spectrometry with an electrospray ionization interface,and quantified using selected ion monitoring mode.The pharmacokinetic parameters were calculated by Winnonlin 4.1.Results:The calibration curves of the reference extractive substance and standard substance methods were linear over the ranges 0.0417–11.3309μg/m L and 0.0394–10.0000μg/m L.The intra-day and interday precision of the two methods at three concentrations were less than 13.63%,and the average recoveries of 3-HP,puerarin,3-MP,and DAG were more than 70.67%.The RSD of the mean plasma concentrations of the analytes calculated by the two methods was less than 5%,and cos(?)==1.000.Among the analytes,puerarin showed the highest blood concentration[(940±185)ng/m L]and the longest retention time[(5±1)h]in the dog’s bodies.Conclusion:Pueraria reference extractive substance can be seen as an alternative to the standard substance to overcome the scarcity of standard substance for the analysis of biological samples.展开更多
文摘The emerging development of Extractive Reference Substance (ERS) is a methodology that meets the needs for quality control for Chinese Herbal Medicines (CHM) and respects the holistic viewpoint of Traditional Chinese Medicine (TCM) and its clinical use of multiple ingredients with synergistic effects. The convention of using just a selected few Chemical Reference Substances (CRS) cannot adequately assess the quality of intact CHM. A validated chemical spectrum of an ERS provides the global characteristics in order to more specifically identify and assess targeted CHM. This paper describes the fundamental concepts, potential significance, and basic criteria of ERS, along with methods of preparation and calibration. Given the diversity of CHM, the various problems that will occur in establishing the proper process of ERS will need to be solved in a step by step manner. The ERSs of Ziziphi spinosae semen and ERS of Fritillaria thunbergii bulbus are given as examples of the development of ERS and demonstrate why we are optimistic about the utility of this approach.
基金financial support from the Major or Scientific and Technological Special Project for“Significant New Drug Creation”(No.2014ZX0930437)the support of Conservation Propagation and Quality Standard of Characteristic Advantage of Chinese Herbal Medicine(No.2015BAI05B03)+1 种基金Bijie City Achievement Transformation Project(Bi Ke Cheng Zi[2014]No.8)Bijie City Social Development Project(Bi Kehe Zi[2015]No.41).
文摘Objective:In order to evaluate the reliability and feasibility of pueraria reference extractive substance(RES)used in biological sample,the pharmacokinetics of 3–hydroxy puerarin(3-HP),puerarin,3–methoxy puerarin(3-MP),and daidzein-8-C-apiosyl-(1-6)-glucoside(DAG)in beagle plasma following oral administration of Yufeng Ningxin Tablet were quantitated.Methods:A reliable and sensitive high-performance liquid chromatography-tandem triple quadrupole mass spectrometry(HPLC-QQQ-MS/MS)method developed with chromatographic separation was operated on a Merck C18 column,and acetonitrile-5 mmol/L ammonium was used as mobile phase in gradient elution.The plasma samples were deproteinized by acetone,detected by triple quadrupole mass spectrometry with an electrospray ionization interface,and quantified using selected ion monitoring mode.The pharmacokinetic parameters were calculated by Winnonlin 4.1.Results:The calibration curves of the reference extractive substance and standard substance methods were linear over the ranges 0.0417–11.3309μg/m L and 0.0394–10.0000μg/m L.The intra-day and interday precision of the two methods at three concentrations were less than 13.63%,and the average recoveries of 3-HP,puerarin,3-MP,and DAG were more than 70.67%.The RSD of the mean plasma concentrations of the analytes calculated by the two methods was less than 5%,and cos(?)==1.000.Among the analytes,puerarin showed the highest blood concentration[(940±185)ng/m L]and the longest retention time[(5±1)h]in the dog’s bodies.Conclusion:Pueraria reference extractive substance can be seen as an alternative to the standard substance to overcome the scarcity of standard substance for the analysis of biological samples.
