title: Pharmacokinetics of honokiol after intravenous administration in rats assessed using high-performance liquid chromatography.
abstract: A simple and sensitive high-performance liquid chromatographic method for the identification and determination of honokiol in rat plasma has been developed. Up to 0.1 ml of plasma containing honokiol was deproteinized with acetonitrile, which contained an internal standard (paeonol). The supernatant was injected onto a reversed-phase C18 column using acetonitrile-water (70:30, v/v, adjusted to pH 2.5-2.8 with orthophosphoric acid) as the mobile phase and ultraviolet detection at 290 nm, followed by UV spectrum identification (between 220 and 380 nm) with a photodiode-array detector. The method was applied to pharmacokinetic studies of honokiol in rat following 5 or 10 mg/kg intravenous administration. A biphasic process consisting of a rapid distribution phase followed by a slower elimination phase was observed from the plasma concentration-time curves. Compartmental analysis yielded a two-compartment model.
authors.affiliation: National Research Institute of Chinese Medicine, Taipei, Taiwan.
authors.forename: T H
authors.initials: TH
authors.lastname: Tsai
authors.forename: C J
authors.initials: CJ
authors.lastname: Chou
authors.forename: F C
authors.initials: FC
authors.lastname: Cheng
authors.forename: C F
authors.initials: CF
authors.lastname: Chen
mesh_terms: D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage / Q000032:analysis / Q000493:pharmacokinetics*; D001713:Biphenyl Compounds / Q000008:administration & dosage / Q000032:analysis / Q000493:pharmacokinetics*; D002851:Chromatography, High Pressure Liquid; D004365:Drugs, Chinese Herbal / Q000008:administration & dosage / Q000032:analysis / Q000493:pharmacokinetics*; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D007275:Injections, Intravenous; D017705:Lignans; D008297:Male; D008954:Models, Biological; D051381:Rats; D017207:Rats, Sprague-Dawley; D013056:Spectrophotometry, Ultraviolet; D000498:Allyl Compounds; D010636:Phenols
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D001713:Biphenyl Compounds; D004365:Drugs, Chinese Herbal; D007202:Indicators and Reagents; D017705:Lignans; C005499:honokiol; D000498:Allyl Compounds; D010636:Phenols