title: [Quantitative determination of ginsenoside Re and Rg1 in human plasma by ultra performance liquid chromatography-tandem mass spectrometry].
abstract: OBJECTIVE
  To develop a rapid and sensitive method for the pharmacokinetic study of ginsenoside Re and Rg1 in SHEN-FU injective powder in human plasma by Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry (UPLC/ESI/MS/MS).
  
  
  METHODS
  A Waters C18 column (1.7 microm, 2.1 x 100 mm) was used in this study. The detection of Re and Rg1 was performed on a triple-quadruple mass spectrometer with multiple-reaction monitoring (MRM) mode using the following transitions: m/z 969.6-->789.3 for Re; m/z 823.5-->643.2 for Rg1 and m/z 803.5-->387.1 for digoxin. A total of 324 plasma samples from 18 healthy volunteers were tested.
  
  
  RESULTS
  A total run could be accomplished in 4 minutes. Only 50 microL plasma sample was needed to detect Re and Rg1. The lowest detectable concentration for both Re and Rg1 was 0.025 ng/mL. Good linearity appeared from 0.1 to 200 ng/mL (r2>0.999). The decline of Re and Rg1 in plasma could be described by a triple-compartment model.
  
  
  CONCLUSIONS
  The proposed method provides a rapid and sensitive method for the quantification of Re and Rg1 in human plasma, which has been successfully applied to the pharmacokinetic study on intravenous infusion of SHEN-FU powder.
authors: State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.
authors: Xia
authors: X
authors: Li
authors: Ming-Hai
authors: MH
authors: Tang
authors: Fan
authors: F
authors: Zhang
authors: Zhu
authors: Z
authors: Yuan
authors: Li-Juan
authors: LJ
authors: Chen
authors: Xian-Huo
authors: XH
authors: Wang
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004365:Drugs, Chinese Herbal / Q000008:administration & dosage / Q000493:pharmacokinetics*; D005260:Female; D036145:Ginsenosides / Q000097:blood*; D006801:Humans; D007275:Injections, Intravenous; D008297:Male; D012680:Sensitivity and Specificity; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D004365:Drugs, Chinese Herbal; D036145:Ginsenosides; C492793:Shen-Fu; C049864:ginsenoside Re; C035054:ginsenoside Rg1