title: Simultaneous determination of ginkgolides A, B, C and bilobalide by LC-MS/MS and its application to a pharmacokinetic study in rats.
abstract: The study of pharmacokinetics of Ginkgo biloba extracts in Traditional Chinese Medicine was relatively recent. In this study, a simple, quick and sensitive LC-MS/MS analytical method was developed for the determination of ginkgolides A, B, C and bilobalide in rat plasma. The analytes were completely separated from the endogenous compounds on an Agilent Zorbax Eclipse plus C18 column (50 mm × 3.0 mm, 1.8 µm) using an isocratic elution. The single-run analysis time was as short as 5.0 min. Sample preparation for protein removal was accomplished used a simple methanol precipitation method, after SPE showing a simultaneous extraction and cleanup of extracts allowing for a direct analysis. Extraction recoveries in rat plasma for ginkgolides A, B, C and bilobalide ranged from 75.6% to 89.0%. The calibration curves were determined over the ranges 0.5-20,000 ng/mL for ginkgolides A, B, C and bilobalide respectively. The lower limits of quantification (LLOQ) of the analytes were 0.5 ng/mL. Inter-day and intra-day precision and accuracy were below 15% and between 85 and 115%, respectively. Finally, the developed method was successfully applied to a pharmacokinetic study following oral administration of the Ginkgo biloba extracts to the male ICR rats.
authors.affiliation: State Key Lab of New-tech for Chinese Medicine Pharmaceutical Processes, Lianyungang, 222001, China.
authors.forename: Jiachun
authors.initials: J
authors.lastname: Li
authors.affiliation: State Key Lab of New-tech for Chinese Medicine Pharmaceutical Processes, Lianyungang, 222001, China.
authors.forename: Dongpo
authors.initials: D
authors.lastname: Li
authors.affiliation: State Key Lab of New-tech for Chinese Medicine Pharmaceutical Processes, Lianyungang, 222001, China.
authors.forename: Junhua
authors.initials: J
authors.lastname: Hu
authors.affiliation: State Key Lab of New-tech for Chinese Medicine Pharmaceutical Processes, Lianyungang, 222001, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Bi
authors.affiliation: State Key Lab of New-tech for Chinese Medicine Pharmaceutical Processes, Lianyungang, 222001, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Xiao
authors.affiliation: State Key Lab of New-tech for Chinese Medicine Pharmaceutical Processes, Lianyungang, 222001, China.
authors.forename: Zhenzhong
authors.initials: Z
authors.lastname: Wang
mesh_terms: D000818:Animals; D002853:Chromatography, Liquid / Q000379:methods*; D046934:Ginkgolides / Q000097:blood* / Q000737:chemistry / Q000493:pharmacokinetics*; D016014:Linear Models; D008297:Male; D051381:Rats; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D046934:Ginkgolides
keywords: bilobalide; ginkgolide A; ginkgolide B; ginkgolide C; pharmacokinetics; rat plasma