title: Development of a LC-MS/MS method for the determination of antrodin B and antrodin C from Antrodia camphorata extract in rat plasma for pharmacokinetic study.
abstract: A selective and sensitive liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed and validated for the determination of antrodin B and antrodin C in rat plasma. Both target compounds, together with the internal standard (diazepam), were extracted from rat plasma samples by liquid-liquid extraction with ethyl acetate. Chromatographic separation was carried out on an Agilent XDB-C(8) column with an isocratic mobile phase consisting of acetonitrile and water (70:30, V/V) at a flow rate of 0.5 mL/min. The mass spectrometric detection was performed by selected reaction monitoring (SRM) mode via atmospheric pressure chemical ionization (APCI) source operating in positive ionization mode. The assay exhibited a linear dynamic range of 47.6-4760 ng/mL for antrodin B and 56.6-5660 ng/mL for antrodin C. The intra- and inter-day precision was less than 5.3% and the accuracy was less than 2.7% for both analytes. The validated method has been applied to the pharmacokinetic study of antrodin B and antrodin C in rats following oral administration of Antrodia camphorata extract.
authors.affiliation: School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, PR China.
authors.forename: Yongli
authors.initials: Y
authors.lastname: Liu
authors.forename: Xin
authors.initials: X
authors.lastname: Di
authors.forename: Xingchao
authors.initials: X
authors.lastname: Liu
authors.forename: Wenjin
authors.initials: W
authors.lastname: Shen
authors.forename: Kelvin Sze-Yin
authors.initials: KS
authors.lastname: Leung
mesh_terms: D000818:Animals; D055491:Antrodia / Q000737:chemistry*; D002853:Chromatography, Liquid / Q000379:methods*; D008301:Maleimides / Q000097:blood* / Q000493:pharmacokinetics; D010936:Plant Extracts / Q000032:analysis*; D051381:Rats; D017207:Rats, Sprague-Dawley; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D008301:Maleimides; D010936:Plant Extracts; C552100:antrodin B; C552101:antrodin C