title: Determination of paclitaxel in human and rat blood samples after administration of low dose paclitaxel by HPLC-UV detection.
abstract: A simple and sensitive HPLC-UV method was developed for the determination of paclitaxel (TXL) in human and rat blood samples. 4-Hydroxybenzoic acid n-hexyl ester was used as an internal standard. TXL was extracted by a liquid-liquid extraction with tert-butylmethyl ether. The disturbing peaks in the case of serum sample were removed by pre-extraction with hexane. The separation of TXL was achieved within 25 min using an ODS column with 50% acetonitrile aqueous solution as a mobile phase at a flow rate of 1.0 mL/min. The eluent was monitored at 230 nm, and the resulted retention times of TXL and IS were 11.2 and 20.4 min. The detection limits of TXL for human plasma, serum and rat plasma samples at a signal-to-noise ratio of 3 were 10, 9.5 and 7.5 ng/mL, respectively. The proposed methods were applicable to the determination of TXL in human patients' plasma ranging from 15 to 27 ng/mL. Furthermore, monitoring of the time course of TXL after its single administration to rat could be demonstrated.
authors.affiliation: Graduate School of Biomedical Sciences, Course of Pharmaceutical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.
authors.forename: Haruo
authors.initials: H
authors.lastname: Yonemoto
authors.forename: Seiko
authors.initials: S
authors.lastname: Ogino
authors.forename: Mihoko N
authors.initials: MN
authors.lastname: Nakashima
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Wada
authors.forename: Kenichiro
authors.initials: K
authors.lastname: Nakashima
mesh_terms: D000368:Aged; D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage / Q000097:blood*; D019540:Area Under Curve; D002138:Calibration / Q000592:standards; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004355:Drug Stability; D005260:Female; D006801:Humans; D062385:Hydroxybenzoates / Q000592:standards; D007262:Infusions, Intravenous; D008875:Middle Aged; D017239:Paclitaxel / Q000008:administration & dosage / Q000097:blood*; D051381:Rats; D017208:Rats, Wistar; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D062385:Hydroxybenzoates; D017239:Paclitaxel