Determination of carboplatin in canine plasma by high-performance liquid chromatography.
Carboplatin is an antineoplastic drug administered to treat different tumoral conditions in canine oncology. The objective of this study was to validate a high-performance chromatographic (HPLC) method which could be applied in canine pharmacokinetic studies. Following ultrafiltration using a Centrifree device, standards, quality controls and plasma samples were separated by isocratic reversed-phase HPLC on an Inertsil ODS-2 (250 x 4.6 mm i.d.) analytical column and quantified using UV detection at 220 nm. The mobile phase was potassium phosphate (pH 4.5), with a flow-rate of 1.0 mL/min. The procedure produced a linear curve (r(2) > 0.999) over the concentration range 1-200 microg/mL. The lower limit of quantification was 1 microg/mL. The intra-assay and inter-assay precision was approximately 90%. The overall recovery was approximately 90%. The method was illustrated with a preliminary pharmacokinetic analysis on nine dogs treated with carboplatin at our hospital. Carboplatin disposition followed a monocompartmental structure in dogs and was characterized by a short half-life (50 min).
Villarino
Nicolas
N
Department of Comparative Medicine, University of Tennessee, College of Veterinary Medicine, Knoxville, TN 37996, USA.
Cox
Sherry
S
Yarbrough
Jason
J
Martín-Jiménez
Tomás
T
D000818:Animals; D000970:Antineoplastic Agents / Q000097:blood* / Q000493:pharmacokinetics; D016190:Carboplatin / Q000097:blood* / Q000493:pharmacokinetics; D002851:Chromatography, High Pressure Liquid / Q000379:methods* / Q000662:veterinary; D004285:Dogs; D019155:Veterinary Drugs / Q000097:blood / Q000493:pharmacokinetics
D000970:Antineoplastic Agents; D019155:Veterinary Drugs; D016190:Carboplatin