A sensitive LC-MS assay using derivatization with boron trifluoride to quantify curcuminoids in biological samples.

A sensitive LC-MS assay using derivatization with boron trifluoride to quantify curcuminoids in biological samples.
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DOI:
10.1016/j.ab.2020.113636
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发表时间:
2020-05-01
影响因子:
2.9
通讯作者:
--
中科院分区:
生物学4区
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本文描述了一种用于测量血浆、大脑、肝脏和肿瘤样本中姜黄素(C)、去甲氧基姜黄素(DMC)、双去甲氧基姜黄素(BDMC)、四氢姜黄素(TC)及其葡萄糖醛酸化代谢物(CG、DMCG和BDMCG)的方法。该方法包括将分析物转化为其二氟化硼衍生物,并通过液相色谱与在负离子MSn扫描模式下运行的离子阱质谱仪联用进行分析。该方法对所有姜黄素类化合物的检测限极低,为0.01 nM,对TC和葡萄糖醛酸化代谢物的检测限为0.5 nM,并提供了含有这些分析物的生物样本的几个代表性色谱图。此外,在一名每日服用非处方姜黄素类产品的人体内,这些化合物的药代动力学特征显示了这种给药方式下循环浓度的峰值和变化。
A procedure is described to measure curcumin (C), demethoxycurcumin (DMC), bisdemethoxycurcumin (BDMC), tetrahydrocurcumim (TC) and their glucuronidated metabolites (CG, DMCG, and BDMCG) in plasma, brain, liver and tumor samples. The procedure involves converting the analytes to their boron difluoride derivatives and analyzing them by combined liquid chromatography coupled to an ion trap mass spectrometer operating in the negative ion MSn scan mode. The method has superb limits of detection of 0.01 nM for all curcuminoids and 0.5 nM for TC and the glucuroniated metabolites, and several representative chromatograms of biological samples containing these analytes are provided. In addition, the pharmacokinetic profile of these compounds in one human who daily consumed an over-the-counter curcuminoid product shows the peak and changes in circulating concentrations achieved by this mode of administration.
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