title: Determination and pharmacokinetics of orientin in rabbit plasma by liquid chromatography after intravenous administration of orientin and Trollius chinensis Bunge extract.
abstract: A high-performance liquid chromatography (HPLC) method was developed and validated for the determination of orientin in rabbit plasma using ultraviolet (UV) absorbance detection. Orientin is the active constituent of purified herbal extract (TRO PE) from the flower of Trollius chinensis Bunge. Protein precipitation was used as the sample preparation technique. A Diamonsil C18 column (150 mmx4.6 mm, 5 microm) was equilibrated with a mobile phase composed of 0.1% acetic acid/methanol/acetonitrile (80/5/15, v/v/v). The calibration curve of orientin in rabbit plasma was linear in the concentration range of 0.530-53.0 microg/mL. This validated method was successfully applied to a pharmacokinetic study in rabbits after the intravenous administrations of orientin and TRO PE at three different doses.
authors.affiliation: Department of Analytical Chemistry, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, PR China.
authors.forename: Xiaoqin
authors.initials: X
authors.lastname: Li
authors.forename: Taoguang
authors.initials: T
authors.lastname: Huo
authors.forename: Feng
authors.initials: F
authors.lastname: Qin
authors.forename: Xiumei
authors.initials: X
authors.lastname: Lu
authors.forename: Famei
authors.initials: F
authors.lastname: Li
mesh_terms: D000818:Animals; D002853:Chromatography, Liquid / Q000379:methods*; D005419:Flavonoids / Q000008:administration & dosage / Q000097:blood* / Q000493:pharmacokinetics*; D005960:Glucosides / Q000008:administration & dosage / Q000097:blood* / Q000493:pharmacokinetics*; D007275:Injections, Intravenous; D010936:Plant Extracts / Q000008:administration & dosage / Q000097:blood / Q000493:pharmacokinetics; D011817:Rabbits; D029626:Ranunculaceae / Q000737:chemistry*; D015203:Reproducibility of Results
chemical_list: D005419:Flavonoids; D005960:Glucosides; D010936:Plant Extracts; C065886:orientin