title: Determination of nateglinide in animal plasma by micellar electrokinetic chromatography and on-line sweeping technique.
abstract: A micellar electrokinetic chromatography (MEKC) method was developed for the determination of nateglinide in animal plasma by on-line sweeping technique, in which plasma samples were simply deproteinized with acetonitrile, and analyzed with 16 mmol/L NaH2PO4 + 6 mmol/L Na2B4O7 + 60 mmol/L sodium dodecyl sulfate (SDS) (pH 7.14) as the running buffer, a fused-silica capillary as the separation tube, 21 kV as the running voltage and UV detection at 214 nm. Under these conditions, more than 100-fold enrichment of nateglinide was obtained with the good linear relation in the range of nateglinide plasma concentration 0.2-7 mg/L (R = 0.998). The method could be applied successfully to determine trace drugs in clinical analysis.
authors.affiliation: Institute of Chemistry, Center for Molecular Science, Chinese Academy of Science, Beijing 100080, China.
authors.forename: Hongyuan
authors.initials: H
authors.lastname: Yan
authors.forename: Gengliang
authors.initials: G
authors.lastname: Yang
authors.forename: Fengxia
authors.initials: F
authors.lastname: Qiao
authors.forename: Yi
authors.initials: Y
authors.lastname: Chen
mesh_terms: D000818:Animals; D002021:Buffers; D020374:Chromatography, Micellar Electrokinetic Capillary / Q000379:methods*; D003510:Cyclohexanes / Q000097:blood*; D006863:Hydrogen-Ion Concentration; D000077715:Nateglinide; D010649:Phenylalanine / Q000031:analogs & derivatives* / Q000097:blood*; D011817:Rabbits; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013048:Specimen Handling
chemical_list: D002021:Buffers; D003510:Cyclohexanes; D000077715:Nateglinide; D010649:Phenylalanine