title: Pharmacokinetics of huperzine A in dogs following single intravenous and oral administrations.
abstract: The pharmacokinetics of huperzine A in dogs after single intravenous and oral administrations was investigated. Concentrations of huperzine A were determined by a validated liquid chromatography-tandem mass spectrometry (LC-MS/MS) method. Pharmacokinetic parameters were calculated by non-compartmental methods. After single intravenous administration, the Cmax, T1/2, AUC0-t, AUC0-infinity, CL, Vd and Vss were 5.55 +/- 1.61 microg/L, 5.02 +/- 0.31 h, 16.04 +/- 5.24, 16.49 +/- 5.29 microgh/L, 0.66 +/- 0.19 L/h/kg, 4.76 +/- 1.46, and 3.93 +/- 1.54 L/kg, respectively. After single oral administration, the Cmax, Tmax, T1/2, AUC0-t, AUC0-infinity and oral bioavailability were 2.60 +/- 0.60 microg/L, 1.25 +/- 0.50 h, 5.71 +/- 2.25 h, 12.90 +/- 3.19, 13.78 +/- 3.24 microgh/L, and 94.4 +/- 36.5%, respectively. In conclusion, huperzine A had a rapid and nearly complete oral absorption and was extensively distributed into tissues after drug administration in dogs.
authors.affiliation: Research Center for Drug Metabolism, College of Life Science, Jilin University, Changchun, P. R. China.
authors.forename: Dafeng
authors.initials: D
authors.lastname: Chu
authors.forename: Wanhui
authors.initials: W
authors.lastname: Liu
authors.forename: Youxin
authors.initials: Y
authors.lastname: Li
authors.forename: Pengfei
authors.initials: P
authors.lastname: Li
authors.forename: Jingkai
authors.initials: J
authors.lastname: Gu
authors.forename: Ke
authors.initials: K
authors.lastname: Liu
mesh_terms: D000284:Administration, Oral; D000470:Alkaloids; D000818:Animals; D019540:Area Under Curve; D002800:Cholinesterase Inhibitors / Q000008:administration & dosage / Q000097:blood / Q000493:pharmacokinetics*; D004285:Dogs / Q000378:metabolism; D005260:Female; D007275:Injections, Intravenous; D008297:Male; D018696:Neuroprotective Agents / Q000008:administration & dosage / Q000097:blood / Q000493:pharmacokinetics*; D012717:Sesquiterpenes / Q000008:administration & dosage / Q000097:blood / Q000493:pharmacokinetics*
chemical_list: D000470:Alkaloids; D002800:Cholinesterase Inhibitors; D018696:Neuroprotective Agents; D012717:Sesquiterpenes; C050426:huperzine A