title: High-performance liquid chromatography with electrochemical detection for analysis of gliclazide in plasma.
abstract: A sensitive HPLC-electrochemical detection method was developed for the analysis of gliclazide (GL) in human plasma. After deproteination of 100 microL of plasma by acetonitrile, evaporation, and reconstitution, GL was separated on a C18 column (150 mm x 4.6 mm) by the mobile phase (70 mM disodium tetraborate, pH 7.5, containing 26.5% of acetonitrile). The regression equations were linear (r> 0.9990) over the range of 50 nM to 4.00 microM. The precision and accuracy of intra- and inter-day analysis were less than 5.3 and 0.93% for relative standard deviation and relative error, respectively. The limit of detection for plasma was 10 nM for GL (S/N = 3, 10 microL injection). This newly developed method was applied for monitoring blood levels with one healthy volunteer dosing with a GL tablet.
authors.affiliation: Graduate Institute of Pharmaceutical Sciences, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan, ROC.
authors.forename: Chien-Yuan
authors.initials: CY
authors.lastname: Kuo
authors.forename: Shou-Mei
authors.initials: SM
authors.lastname: Wu
mesh_terms: D000328:Adult; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004563:Electrochemistry / Q000379:methods*; D005907:Gliclazide / Q000097:blood*; D006801:Humans; D007004:Hypoglycemic Agents / Q000097:blood*; D008297:Male; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D007004:Hypoglycemic Agents; D005907:Gliclazide