title: Simultaneous determination of ZT-1 and its metabolite Huperzine A in plasma by high-performance liquid chromatography with ultraviolet detection.
abstract: ZT-1 is a novel acetylcholinesterase (AChE) inhibitor. It is rapidly transformed to Huperzine A (Hup A) in vitro. A simple and rapid HPLC-UV method for the simultaneous determination of ZT-1 and its metabolite Hup A in plasma is described. The chromatographic separations were achieved on a C(18) ODS column (250 mm x 4.6 mm ID) using methanol-1 mmol/L ammonium acetate (70:30,v/v) as mobile phase. The flow rate was 0.7 mL/min, the detection wavelength was 313 nm and the column temperature was kept at 35 degrees C. Plasma samples were prepared as rapidly as possible and extracted immediately with 5 mL of chloroform:iso-propyl alcohol mixture (v/v, 9:1). The retention times of ZT-1 and Huperzine A (Hup A) were 18.7 and 14.4 min, respectively. The mean absolute recoveries of two analytes were >90%. Quantification limits were all 0.02 nmol/mL for ZT-1 and Hup A. This analytical method was reliable and convenient procedure that meets the criteria for the pharmacokinetic evaluation of ZT-1 on experimental animals.
authors.affiliation: Tianjin Key Laboratory of Pharmacokinetics and Pharmacodynamics, Tianjin Institute of Pharmaceutical Research, China. weig1510@163.com
authors.forename: Guangli
authors.initials: G
authors.lastname: Wei
authors.forename: Shuhua
authors.initials: S
authors.lastname: Xiao
authors.forename: Rong
authors.initials: R
authors.lastname: Lu
authors.forename: Changxiao
authors.initials: C
authors.lastname: Liu
mesh_terms: D000470:Alkaloids; D000818:Animals; D002138:Calibration; D002800:Cholinesterase Inhibitors / Q000097:blood* / Q000493:pharmacokinetics; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004285:Dogs; D005260:Female; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley; D015203:Reproducibility of Results; D012717:Sesquiterpenes / Q000097:blood* / Q000493:pharmacokinetics; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*
chemical_list: D000470:Alkaloids; D002800:Cholinesterase Inhibitors; D012717:Sesquiterpenes; C508413:ZT-1 compound; C050426:huperzine A