Quantitative determination of individual teicoplanin components in human plasma and cerebrospinal fluid by high-performance liquid chromatography with electrochemical detection.
We have developed a simple, rapid and highly sensitive method for determining a plasma or cerebrospinal fluid (CSF) concentrations of individual teicoplanin components using reversed-phase high-performance liquid chromatography followed by electrochemical detection. A linear relationship was observed between concentrations and peak heights for the teicoplanin concentration range of 0.025-10microg/mL. The correlation coefficients of all standard curves were greater than or equal to 0.999. The limit of detection for the major component of teicoplanin was 1.0ng/mL (signal/noise ratio >3). Daily fluctuations of standard curves (n=5) were small, with coefficients of variation of 3.3%. The intra-assay precision was 5.9% (n=5). Inter-assay precision ranged from 2.6 to 6.8%. The method described here is suitable for clinical monitoring of teicoplanin levels in plasma or CSF level and for use in studies involving pharmacokinetics of individual teicoplanin component.
Mochizuki
Nobuo
N
Department of Medication Use Analysis and Clinical Research, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan.
Ohno
Keiko
K
Shimamura
Tsuyoshi
T
Furukawa
Hiroyuki
H
Todo
Satoru
S
Kishino
Satoshi
S
D002648:Child; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004563:Electrochemistry / Q000379:methods; D005260:Female; D006801:Humans; D015203:Reproducibility of Results; D017334:Teicoplanin / Q000008:administration & dosage / Q000097:blood* / Q000134:cerebrospinal fluid*
D017334:Teicoplanin