title: High-performance liquid chromatography with ultraviolet detection for real-time therapeutic drug monitoring of meropenem in plasma.
abstract: A simple, rapid, and precise high-performance liquid chromatography (HPLC) method using ultrafiltration to remove plasma protein was developed to determine meropenem concentrations in human plasma in a clinical setting. Plasma was separated by centrifugation at 4 degrees C from blood collected in heparinized vacuum tubes, and meropenem was stabilized by immediately mixing the plasma with 1M 3-morpholinopropanesulfonic acid buffer (pH 7.0) (1:1). Ultrafiltration was used for plasma deproteinization. Meropenem was detected by ultraviolet absorbance at 300 nm with no interfering plasma peak. The calibration curve of meropenem in human plasma was linear from 0.05 to 100 microg/mL. Intraday and interday precision was less than 7.17% (CV), and accuracy was between 97.7% and 106.3% over 0.05 microg/mL. The limit of detection was 0.01 microg/mL. The assay has been clinically applied to a real-time therapeutic drug monitoring in pediatric patients and pharmacokinetic studies.
authors.affiliation: Department of Clinical Pharmacotherapy, Graduate School of Biomedical Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8551, Japan. ikeda@hiroshima-u.ac.jp
authors.forename: Kayo
authors.initials: K
authors.lastname: Ikeda
authors.forename: Kazuro
authors.initials: K
authors.lastname: Ikawa
authors.forename: Norifumi
authors.initials: N
authors.lastname: Morikawa
authors.forename: Mizuka
authors.initials: M
authors.lastname: Miki
authors.forename: Shin-Ichiro
authors.initials: S
authors.lastname: Nishimura
authors.forename: Masao
authors.initials: M
authors.lastname: Kobayashi
mesh_terms: D000890:Anti-Infective Agents / Q000097:blood* / Q000493:pharmacokinetics; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D016903:Drug Monitoring / Q000379:methods*; D006801:Humans; D000077731:Meropenem; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*; D013845:Thienamycins / Q000097:blood* / Q000493:pharmacokinetics
chemical_list: D000890:Anti-Infective Agents; D013845:Thienamycins; D000077731:Meropenem