title: High-performance liquid chromatography-electrospray ionization mass spectrometry determination of mitiglinide in human plasma and its pharmacokinetics.
abstract: A selective and sensitive method employing high-performance liquid chromatography-electrospray ionization mass spectrometry was developed and validated for the determination of mitiglinide in human plasma.With gliclazide as the internal standard, mitiglinide was extracted from plasma with n-hexane: = 80 : 20 (v/v). The organic layer was evaporated and the residue was redissolved in methanol: water (10 mM CH3COONH4, pH = 3.0) = 65 : 35 (v/v). An aliquot of 10 microl was chromatographically analyzed on a prepacked Shimadzu VP-ODS (5 microm, 150 x 2.0 mm i.d.) using the mobile phase comprising methanol: water (10 mM CH3COONH4) = 65 : 35 (v/v) by means of selected-ion monitoring mode mass spectrometry. Standard curves were linear (r2 = 0.9972) over the concentration range of 2.84-11 300 pmol/ml and had good accuracy and precision. The within- and between-batch precisions of the method were within 15% of standard deviation. The lower limit of detection was 1.42 pmol/ml. The validated HPLC/ESI-MS method has been successfully applied in the pharmacokinetics of mitiglinide in 12 healthy Chinese volunteers.
authors.affiliation: Key Laboratory of Drug Quality Control and Pharmacovigilance (China Pharmaceutical University), Ministry of Education, Nanjing, 210009, China.
authors.forename: Jiabi
authors.initials: J
authors.lastname: Liang
authors.forename: Yuan
authors.initials: Y
authors.lastname: Tian
authors.forename: Zunjian
authors.initials: Z
authors.lastname: Zhang
authors.forename: Shudan
authors.initials: S
authors.lastname: Feng
authors.forename: Yanan
authors.initials: Y
authors.lastname: Zhao
authors.forename: Guoguang
authors.initials: G
authors.lastname: Mao
mesh_terms: D000328:Adult; D019540:Area Under Curve; D002851:Chromatography, High Pressure Liquid; D005260:Female; D006801:Humans; D007004:Hypoglycemic Agents / Q000097:blood* / Q000493:pharmacokinetics*; D007211:Indoles / Q000097:blood* / Q000493:pharmacokinetics*; D054833:Isoindoles; D008297:Male; D015203:Reproducibility of Results; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*
chemical_list: D007004:Hypoglycemic Agents; D007211:Indoles; D054833:Isoindoles; C087255:mitiglinide