title: Comparative pharmacokinetic study of paeoniflorin after oral administration of pure paeoniflorin, extract of Cortex Moutan and Shuang-Dan prescription to rats.
abstract: Shuang-Dan (SD) is a traditional Chinese prescription containing Cortex Moutan and Radix Salviae miltiorrhizae and commonly used for treating cardiovascular disease. Paeoniflorin is a main effective ingredient of Cortex Moutan and the pharmacokinetic differences of paeoniflorin following oral administration of pure paeoniflorin, Cortex Moutan extract and SD decoction to rats were studied with approximately the same dose of 30mg/kg paeoniflorin. At different time points (5, 10, 15, 30, 45, 60, 90, 120, 150, 210, 270, 360, 450min), plasma concentration of paeoniflorin was determined using a simple and rapid HPLC-MS method. Unpaired student's t-test was used for the statistical comparison. A bimodal phenomenon was observed in the plasma profile after oral administration of Cortex Moutan extract. Statistically significant increase (P<0.05) in pharmacokinetic parameters of paeoniflorin including AUC(0-t), AUC(0-infinity) and MRT were obtained after oral administration of Cortex Moutan or SD decoction comparing with pure paeoniflorin. The investigation showed that among all calculated parameters, AUC(0-t), AUC(0-infinity), MRT, k(e) and T(1/2), there were no significant differences between the two decoctions. The results indicated that the reason which delay the elimination of paeoniflorin and enhance its bioavailability might be some ingredients in Cortex Moutan extract.
authors.affiliation: Department of Pharmaceutical Analysis, School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China.
authors.forename: Hao
authors.initials: H
authors.lastname: Wu
authors.forename: Zhenyu
authors.initials: Z
authors.lastname: Zhu
authors.forename: Guoqing
authors.initials: G
authors.lastname: Zhang
authors.forename: Liang
authors.initials: L
authors.lastname: Zhao
authors.forename: Hai
authors.initials: H
authors.lastname: Zhang
authors.forename: Dongliang
authors.initials: D
authors.lastname: Zhu
authors.forename: Yifeng
authors.initials: Y
authors.lastname: Chai
mesh_terms: D000284:Administration, Oral; D000818:Animals; D019540:Area Under Curve; D001565:Benzoates / Q000008:administration & dosage / Q000097:blood / Q000737:chemistry / Q000493:pharmacokinetics*; D001952:Bridged-Ring Compounds / Q000008:administration & dosage / Q000097:blood / Q000737:chemistry / Q000493:pharmacokinetics*; D002138:Calibration; D002851:Chromatography, High Pressure Liquid; D004355:Drug Stability; D004365:Drugs, Chinese Herbal / Q000493:pharmacokinetics; D005615:Freezing; D005960:Glucosides / Q000008:administration & dosage / Q000097:blood / Q000737:chemistry / Q000493:pharmacokinetics*; D006207:Half-Life; D008297:Male; D013058:Mass Spectrometry; D008657:Metabolic Clearance Rate; D015394:Molecular Structure; D039821:Monoterpenes; D029596:Paeonia; D010936:Plant Extracts / Q000008:administration & dosage / Q000097:blood / Q000737:chemistry / Q000493:pharmacokinetics*; D055656:Prescriptions; D011786:Quality Control; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley; D012015:Reference Standards; D012680:Sensitivity and Specificity; D006027:Glycosides
chemical_list: D001565:Benzoates; D001952:Bridged-Ring Compounds; D004365:Drugs, Chinese Herbal; D005960:Glucosides; D039821:Monoterpenes; D010936:Plant Extracts; C521472:Shuangdan; C038881:moutan cortex; C015423:peoniflorin; D006027:Glycosides