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    • 11. 发明授权
    • Fluorescent hplc assay for 20-hete and other p-450 metabolites of arachidonic acid
    • 荧光hplc测定20代和其他p-450花生四烯酸代谢物
    • US06764855B2
    • 2004-07-20
    • US10257014
    • 2003-02-14
    • Richard J. RomanKristopher G. Maier
    • Richard J. RomanKristopher G. Maier
    • G01N2164
    • G01N33/92G01N30/34G01N30/74G01N2030/027G01N2030/625G01N21/64
    • The present invention provides a fluorescent HPLC assay for detecting the presence and/or measuring the level of 20-hydroxyeicosatetraenoic acid (20-HETE) and other P-450 metabolites of arachidonic acid in a sample. P-450 metabolites of arachidonic acid are first extracted from the sample and then labeled with 2-(2,3-naphthalimino)ethyl trifluoromethanesulfonate. The labeling reaction is catalyzed by N,N-diisopropylethylamine. Next, the labeled P-450 metabolites are separated on a 4.5×250-mm, 5 &mgr;M particle size C18 reverse-phase HPLC column using a mobile phase of methanol:water:acetic acid (82:18:0.1, v/v/v) and an isocratic elution at a rate of about 1.3 ml per minute. Fluorescence intensities of the column eluent are monitored by a fluorescence detector. Quantitation of P-450 metabolites in a sample can be made by using an internal standard.
    • 本发明提供用于检测样品中存在和/或测量20-羟基二十碳四烯酸(20-HETE)和花生四烯酸的其它P-450代谢物的水平的荧光HPLC测定。 首先从样品中提取花生四烯酸的P-450代谢物,然后用三氟甲磺酸2-(2,3-萘二甲酰基)乙酯标记。 标记反应由N,N-二异丙基乙胺催化。 接下来,使用甲醇:水:乙酸(82:18:0.1,v / v / v)的流动相,在4.5×250mm,5μm粒度C18反相HPLC柱上分离标记的P-450代谢物 )和以每分钟约1.3ml的速度进行等度洗脱。 通过荧光检测器监测柱洗脱液的荧光强度。 样品中P-450代谢物的定量可以通过使用内标进行。