title: Simultaneous determination of puerarin, daidzein, baicalin, wogonoside and liquiritin of GegenQinlian decoction in rat plasma by ultra-performance liquid chromatography-mass spectrometry.
abstract: A specific ultra-performance liquid chromatography-mass spectrometry (UPLC-MS) method was developed for the simultaneous determination of puerarin, daidzein, baicalin, wogonoside and liquiritin in rat plasma. Chromatographic separation was performed on a C(18) column packed with 1.7 microm particles by a linear gradient elution. The analytes and carbamazepine (internal standard, I.S.) were monitored in a selected-ion reaction (SIR) mode with a positive electrospray ionization (ESI) interface by the following ions: m/z 417.2 for puerarin, m/z 255.2 for daidzein, m/z 271.0 for baicalin, m/z 461.0 for wogonoside, m/z 441.0 for liquiritin and m/z 237.2 for carbamazepine (I.S.), respectively. The calibration curves of these analytes were linear over the concentration ranges from 0.00254-1.02 microg mL(-1) to 0.0102-10.2 microg mL(-1). Within-batch and between-batch precisions (RSD%) were all within 15% and accuracy (RE%) ranged from -10% to 10%. The extraction recoveries were on average 79.8% for puerarin, 90.8% for daidzein, 74.4% for baicalin, 70.2% for wogonoside and 84.7% for liquiritin. The validated method was successfully applied to investigate the pharmacokinetics of five bioactive compounds of GegenQinlian decoction (GQD) in rats.
authors.affiliation: Department of Chemistry, College of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, People's Republic of China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Wang
authors.forename: Yamin
authors.initials: Y
authors.lastname: Yao
authors.forename: Rui
authors.initials: R
authors.lastname: An
authors.forename: Lisha
authors.initials: L
authors.lastname: You
authors.forename: Xinhong
authors.initials: X
authors.lastname: Wang
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004365:Drugs, Chinese Herbal / Q000008:administration & dosage* / Q000737:chemistry; D044950:Flavanones / Q000097:blood* / Q000737:chemistry; D005419:Flavonoids / Q000097:blood* / Q000737:chemistry; D005960:Glucosides / Q000097:blood* / Q000737:chemistry; D007529:Isoflavones / Q000097:blood* / Q000737:chemistry; D013058:Mass Spectrometry / Q000379:methods*; D051381:Rats; D012680:Sensitivity and Specificity
chemical_list: D004365:Drugs, Chinese Herbal; D044950:Flavanones; D005419:Flavonoids; D005960:Glucosides; D007529:Isoflavones; C542794:gegenqinlian; C038044:baicalin; C004742:daidzein; C473995:wogonoside; C512196:liquiritin; C033607:puerarin