Simultaneous quantitation of polygalaxanthone III and four ginsenosides by ultra-fast liquid chromatography with tandem mass spectrometry in rat and beagle dog plasma after oral administration of Kai-Xin-San: Application to a comparative pharmacokinetic s

2014 ◽  
Vol 37 (9-10) ◽  
pp. 1103-1110 ◽  
Author(s):  
Chunxiao Lv ◽  
Qing Li ◽  
Xiaowen Zhang ◽  
Bosai He ◽  
Huarong Xu ◽  
...  
Molecules ◽  
2018 ◽  
Vol 23 (8) ◽  
pp. 1925 ◽  
Author(s):  
Binbin Cui ◽  
Jing Yang ◽  
Zhibin Wang ◽  
Chengcui Wu ◽  
Hongrui Dong ◽  
...  

This study has developed a sensitive and simple ultra-high performance liquid chromatography-electrospray ionization-tandem mass spectrometry method for the simultaneous determination of corydaline, dehydrocorydaline, tetrahydropalmatine, protopine, palmatine, tetrahydroberberine, columbamine, berberine, coptisine and berberrubine in beagle dog plasma after the oral administration of the Corydalis yanhusuo W.T. Wang and Yuanhuzhitong tablets. Chromatographic separation was achieved on an Agilent Eclipse Plus C18 RRHD column (1.8 µm, 50 × 2.1 mm) using a gradient elution program with a mobile phase consisting of acetonitrile and water containing 0.1% formic acid at a flow rate of 0.3 mL/min. A tandem mass spectrometric detection was conducted by multiple reaction monitoring (MRM) mode via an electrospray ionization source in the positive mode. The calibration curves of all analytes showed good linear (r2 > 0.9800). The intra-day and inter-day precisions were less than 15% and the accuracies were within ±15%. The extraction recoveries conformed to the acceptable range. And there was no interference of endogenous substances in the sensitive assay method. All analytes were proven to be stable during sample storage and analysis procedures. The pharmacokinetic study indicated that the Yuanhuzhitong tablets could get a better absorption than Corydalis yanhusuo W.T. Wang.


Molecules ◽  
2018 ◽  
Vol 23 (8) ◽  
pp. 1927 ◽  
Author(s):  
Hongrui Dong ◽  
Guanyun Yan ◽  
Zhibin Wang ◽  
Chengcui Wu ◽  
Binbin Cui ◽  
...  

A rapid and sensitive Ultra high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) method was developed for the simultaneous determination of fourteen alkaloids in beagle dog plasma after a single oral dose of the Corydalis bungeana Turcz (C. bungeana) extract selected bifendate as the internal standard (IS). The plasma samples were preprocessed by liquid-liquid extraction (LLE) with aether before separation on an Agilent SB-C18 column (1.8 µm, 150 × 2.1 mm) using a gradient elution program. The mobile phase consists of 0.2% acetic acid and acetonitrile at the flow rate of 0.3 mL/min. In the positive ion mode, the analytes were detected by multiple reaction monitoring (MRM). The results indicated that calibration curves for fourteen analytes have good linearity (R2 = 0.9904). The lower limits of quantification (LLOQ) of fourteen alkaloids and IS were all over 4.87 ng/mL and the matrix effects ranged from 94.08% to 102.76%. The mean extraction recoveries of Quality control samples at low (LQC), medium (MQC) and high (HQC) and IS were all more than 78.03%. The intra- and inter-day precision (R.S.D.%) also met the criterion, at the same time the deviation of assay accuracies (R.E) ranged from −13.70% to 14.40%. The Tmax values of fourteen alkaloids were no more than 1 h. The range of Cmax was from 74.16 ± 8.71 to 2256 ± 255.9 ng/mL. The assay was validated in the light of the regulatory bioanalytical guidelines and proved acceptable, which was successfully applied to a pharmacokinetic study of these compounds in beagle dogs after oral administration of Corydalis bungeana Turcz extract.


2014 ◽  
Vol 6 (15) ◽  
pp. 6088-6094 ◽  
Author(s):  
Lin-Hu Ye ◽  
Xiao-Xi He ◽  
Ming-Zhu Yan ◽  
Qi Chang

The herb of lotus (Nelumbo nucifera) leaves is the traditional Chinese medicine He Ye, which is commonly used to treat sunstroke, assuage thirst, and cure both diarrhea and fever in China.


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