Enantiomeric determination of L- and D-lactic acid in human cerebrospinal fluid by chiral ligand exchange high-performance liquid chromatography

Shigeo Okubo, Fumiko Mashige, Mie Omori, Yoshiaki Hashimoto, Kazuhiko Nakahara, Hideko Kanazawa, Yoshikazu Matsushima

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Enantiomeric determination of L- and D-lactate in human cerebrospinal fluid (CSF) was achieved by HPLC on a chiral stationary phase with UV detection. Samples were submitted to a solid-phase extraction procedure using Oasis(TM) HLB Plus Extraction Cartridge and L- and D-lactate in the extract were separated by Shodex ORpac CRX-453 B column, a ligand exchange column for chiral separation, using a mobile phase containing copper (II) ion. L- and D-lactate were determined in 25 min. Intra-assay precision in CSF was 4.98% (mean 1.85 mmol/L) for L-lactate and 10.1% (mean 4.96 μmol/L) for D-lactate (n = 5). Detection limits were between 1.0 (L-lactate) and 1.5 (D-lactate) pmol. The mean values (n = 3) of analytical recovery for L- and D-lactate were 95% and 107%, respectively. The mean ± SD of concentrations of L- and D-lactate in CSF (n = 20) were 1.52 ± 0.54 mmol/L and 10.98 ± 5.15 μmol/L, respectively. Copyright (C) 2000 John Wiley and Sons, Ltd.

Original languageEnglish
Pages (from-to)474-477
Number of pages4
JournalBiomedical Chromatography
Volume14
Issue number7
DOIs
Publication statusPublished - 2000 Nov 29

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Molecular Biology
  • Pharmacology
  • Drug Discovery
  • Clinical Biochemistry

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