title: HPLC study of pharmacokinetics and tissue distribution of morroniside in rats.
abstract: Morroniside is an important constituent of traditional Chinese medicines Fructus Corni with several bioactivities. An HPLC method for determination of morroniside in rat plasma and tissues was developed and the pharmacokinetic and tissue distribution characteristics of morroniside after intravenous and oral administrations were investigated. The bio-samples were prepared based on a simple protein precipitation and the separation of morroniside was achieved on a C(18) column with a mobile phase consisted of acetonitrile-methanol-0.1% formic acid (10:10:80, v/v) at a flow rate of 1.0 ml/min. Chromatograms were monitored at 239 nm and the temperature of column was kept at 25 degrees C. Pharmacokinetic study found that morroniside was absorbed and eliminated rapidly in rat and manifested linear dynamics at 10-40 mg/kg range and absolute bioavailability of morroniside was lower. Tissue distribution showed the highest level was observed in small intestine, then in kidney and stomach, but no morroniside was detected in brain, which indicated that small intestine, kidney and stomach were major distribution tissues of morroniside in rats, and morroniside had difficulty in crossing the blood-brain barrier. It was also found there was no long-term accumulation of morroniside in rat tissues.
authors.affiliation: Department of Pharmaceutical Analysis, School of Pharmacy, Hebei Medical University, Shijiazhuang 050017, PR China.
authors.forename: Xiaona
authors.initials: X
authors.lastname: Li
authors.forename: Qiao
authors.initials: Q
authors.lastname: Wang
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Zhang
authors.forename: Xiaona
authors.initials: X
authors.lastname: Sheng
authors.forename: Yanan
authors.initials: Y
authors.lastname: Zhou
authors.forename: Min
authors.initials: M
authors.lastname: Li
authors.forename: Xiujuan
authors.initials: X
authors.lastname: Jing
authors.forename: Deqiang
authors.initials: D
authors.lastname: Li
authors.forename: Lantong
authors.initials: L
authors.lastname: Zhang
mesh_terms: D000284:Administration, Oral; D000818:Animals; D019540:Area Under Curve; D002138:Calibration; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004305:Dose-Response Relationship, Drug; D004355:Drug Stability; D005615:Freezing; D006027:Glycosides / Q000008:administration & dosage / Q000737:chemistry / Q000493:pharmacokinetics*; D006207:Half-Life; D008297:Male; D008657:Metabolic Clearance Rate; D015394:Molecular Structure; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley; D012015:Reference Standards; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013696:Temperature; D013997:Time Factors; D014018:Tissue Distribution
chemical_list: D006027:Glycosides; C488401:morroniside