人血浆中维生素E烟酸酯的LC-MS/MS法测定及其药动学

Shanghai Medical & Pharmaceutical Journal(2009)

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Abstract
目的:建立LC-MS/MS法测定人血浆中维生素E烟酸酯浓度的方法。方法:研究22例健康受试者自身对照、双周期交叉口服0.2g维生素E烟酸酯受试制剂和参比制剂后的药代动力学。采用C18柱,流动相为甲醇(含0.05%甲酸),内标为盐酸氨溴索,以选择性离子反应检测(MRM)扫描方式进行检测,检测离子质荷比(m/z)为536.5→165.1(维生素E烟酸酯)和378.9→263.9(盐酸氨溴索)。血浆样品用NaOH碱化、沉淀蛋白,石油醚提取浓缩。结果:血浆中维生素E烟酸酯线形范围为1.44~1666.7ng/mL,维生素E烟酸酯最低定量浓度为1.44ng/mL。结论:本方法检测速度快、灵敏度高、专属性强,可用于维生素E烟酸酯口服制剂的人体药动学研究。
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Key words
LC-MS/MS,Vitamin E nicotinate,pharmacokinetics
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