title: Hollow fiber-based liquid membrane microextraction combined with high-performance liquid chromatography for extraction and determination of trimetazidine in human plasma.
abstract: A hollow fiber-based liquid phase microextraction strategy combined with high-performance liquid chromatography was evaluated for the quantitative determination of trimetazidine in human plasma. Trimetazidine was extracted from a 2.1 mL basified plasma sample (donor phase) into the organic solvent (n-octanol) impregnated in the pores of a hollow fiber and then extracted into an acidic solution (acceptor phase) inside the lumen of the hollow fiber. The result showed that transport of drugs from alkaline sample solution into 0.5 m HCl occurred efficiently when 25 μL of 250 mm sodium 1-octanesulfonate was added into the donor phase. Several parameters influencing the efficiency of the method, such as the nature of organic solvent used to impregnate the membrane, compositions of donor phase and acceptor phase, type and concentration of carrier, extraction time, stirring rate and salt concentration, were investigated and optimized. Under the optimal conditions, the calibration curves were obtained in the range of 5-200 ng/mL with reasonable linearity (r > 0.9980). The method was successfully applied to determine the concentration of trimetazidine in human plasma.
authors: School of Pharmacy, Shenyang Pharmaceutical University, Wenhua Road 103, Shenhe District, Shenyang, People's Republic of China.
authors: Jiang
authors: J
authors: Lv
authors: Xu
authors: X
authors: Zhao
authors: Jing
authors: J
authors: Ye
authors: Dan
authors: D
authors: Liu
authors: Xiaohui
authors: X
authors: Chen
authors: Kaishun
authors: K
authors: Bi
mesh_terms: D017738:Alkanesulfonic Acids; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004355:Drug Stability; D006801:Humans; D016014:Linear Models; D059627:Liquid Phase Microextraction / Q000295:instrumentation / Q000379:methods*; D008567:Membranes, Artificial; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014292:Trimetazidine / Q000097:blood* / Q000737:chemistry / Q000493:pharmacokinetics
chemical_list: D017738:Alkanesulfonic Acids; D008567:Membranes, Artificial; C042005:1-octanesulfonic acid; D014292:Trimetazidine