title: HPLC method for the determination and pharmacokinetic studies on geniposide in rat serum after oral administration of traditional Chinese medicinal preparation Yin-Zhi-Ku decoction.
abstract: A new HPLC method for the determination of geniposide in rat serum with solid-phase extraction (SPE) for preconcentration is described. Geniposide and an internal standard (paeoniflorin) were extracted from serum by SPE using C18 cartridges. Analysis of the extract was then performed on a reversed-phase C18 column using acetonitrile-water (16:84, v/v) as the eluting solvent system, and UV detection at 238 nm was used to measure the analyte with a limit of quantitation about 0.1 microg/mL. The calibration curve for geniposide was linear (r = 0.9993) in the concentration range 0.1-16.0 microg/mL. The intra- and inter-day precision of the geniposide were determined and their RSD did not exceed 10%. The validated method has been successfully applied for pharmacokinetic studies of geniposide from rat serum after oral administration of Yin-Zhi-Ku decoction.
authors.affiliation: Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 201203, People's Republic of China.
authors.forename: Guan
authors.initials: G
authors.lastname: Ye
authors.forename: Hai-Yan
authors.initials: HY
authors.lastname: Zhu
authors.forename: Hao-Long
authors.initials: HL
authors.lastname: Zhao
authors.forename: Bo
authors.initials: B
authors.lastname: Xu
authors.forename: Cheng-Gang
authors.initials: CG
authors.lastname: Huang
mesh_terms: D000284:Administration, Oral; D000818:Animals; D005591:Chemical Fractionation; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004365:Drugs, Chinese Herbal / Q000008:administration & dosage*; D039823:Iridoids / Q000097:blood* / Q000493:pharmacokinetics*; D008297:Male; D011714:Pyrans / Q000097:blood* / Q000493:pharmacokinetics*; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D004365:Drugs, Chinese Herbal; D039823:Iridoids; D011714:Pyrans; C513823:Yin-Zhi-Ku; C007835:geniposide