title: Simultaneous determination of three phenylethanoid glycosides from Callicarpae Caulis et Folium in rat plasma by LC-MS/MS and its application to PK study.
abstract: BACKGROUND
  Callicarpae Caulis et Folium (CCF) is a traditional Chinese medicine usually used for hemostasis in clinics. In this study, a novel LC-MS/MS method was developed and validated for the simultaneous quantification of three phenylethanoid glycosides in rat plasma (verbascoside, forsythoside B and poliumoside), which are the major bioactive compounds of CCF; MS was operated in negative mode.
  
  
  RESULTS
  This method was linear between 5.2 and 1010 ng/ml for poliumoside, 7.0 and 420 ng/ml for forsythoside B and 2.60 and 260.0 ng/ml for verbascoside. The MS/MS ion transitions monitored were m/z 769.4→160.5, m/z 755.3→593.3, m/z 623.1→160.5 and m/z 179.0→133.6 for poliumoside, forsythoside B, verbascoside and caffeic acid (IS), respectively. Linearity, accuracy, precision and extraction recovery of three analytes were all satisfactory.
  
  
  CONCLUSIONS
  The method developed was sensitive, specific and rapid. It has been successfully applied in a PK study of three phenylethanoid glycosides after a single oral administration of CCF extract to rats.
authors.affiliation: School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
authors.forename: Xiuman
authors.initials: X
authors.lastname: Sun
authors.forename: Qiongfeng
authors.initials: Q
authors.lastname: Liao
authors.forename: Guanghui
authors.initials: G
authors.lastname: Liu
authors.forename: Hao
authors.initials: H
authors.lastname: Cai
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: Chenchen
authors.initials: C
authors.lastname: Zhu
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Xie
mesh_terms: D000284:Administration, Oral; D000818:Animals; D002109:Caffeic Acids / Q000097:blood*; D032408:Callicarpa / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation / Q000379:methods*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000493:pharmacokinetics; D005960:Glucosides / Q000097:blood*; D006027:Glycosides / Q000097:blood*; D057230:Limit of Detection; D008297:Male; D008516:Medicine, Chinese Traditional; D010636:Phenols / Q000097:blood*; D051381:Rats; D017207:Rats, Sprague-Dawley; D012015:Reference Standards; D015203:Reproducibility of Results; D053719:Tandem Mass Spectrometry / Q000295:instrumentation / Q000379:methods*; D059808:Polyphenols
chemical_list: D002109:Caffeic Acids; D004365:Drugs, Chinese Herbal; D005960:Glucosides; D006027:Glycosides; D010636:Phenols; C552409:forsythoside B; C584242:poliumoside; C058956:acteoside; D059808:Polyphenols