title: Determination of apomorphine in canine plasma by liquid chromatography-electrospray ionization mass spectrometry and its application to a pharmacokinetic study.
abstract: An LC-ESI-MS method was developed and validated for the assay of apomorphine in canine plasma using one-step liquid-liquid extraction. The analytes were separated on a Phenomenex Gemini C18 (150 mm x 2.0 mm id 3 microm) column and determined by MS in the positive ion mode. The linear range was 0.4-40 ng/mL with an LOD of 0.2 ng/mL for apomorphine in plasma. The intraday and interday precision and accuracy of quality control samples were < 5.9% RSD and < 7.5% bias for apomorphine. Extraction recoveries were > 80%. The validated method was successfully applied to analyze canine plasma samples in a pharmacokinetic study of apomorphine in dogs and detailed pharmacokinetic parameters were calculated.
authors.affiliation: Department of Pharmaceutical Analysis, School of Pharmacy, Fudan University, Shanghai, PR China.
authors.forename: Bei
authors.initials: B
authors.lastname: Yang
authors.forename: Yunqiu
authors.initials: Y
authors.lastname: Yu
authors.forename: Lei
authors.initials: L
authors.lastname: Cai
authors.forename: Chunhui
authors.initials: C
authors.lastname: Deng
authors.forename: Gengli
authors.initials: G
authors.lastname: Duan
mesh_terms: D000281:Administration, Intranasal; D000818:Animals; D001058:Apomorphine / Q000008:administration & dosage / Q000097:blood* / Q000493:pharmacokinetics; D001774:Blood Chemical Analysis / Q000379:methods / Q000706:statistics & numerical data; D002851:Chromatography, High Pressure Liquid / Q000379:methods* / Q000706:statistics & numerical data; D004285:Dogs; D004355:Drug Stability; D012680:Sensitivity and Specificity; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods* / Q000706:statistics & numerical data
chemical_list: D001058:Apomorphine