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    • 41. 发明授权
    • Method for determination of 5-hydroxycreatinine
    • 5-羟基肌氨酸的测定方法
    • US06696301B2
    • 2004-02-24
    • US09968823
    • 2001-10-02
    • Ko NakamuraKatsumi Kawano
    • Ko NakamuraKatsumi Kawano
    • G01N3300
    • C07D233/88Y10S436/811Y10S436/815Y10T436/17Y10T436/25375Y10T436/255
    • The present invention provides a highly sensitive and practical method for the determination of and the separation of 5-hydroxycreatinine from a sample of bodily fluid. The method of the present invention is useful as a method for the testing of renal dysfunction, such as uremia, chronic nephritis and closure of the urinary tract, etc. A separation solvent of pH 4.1 to 4.6 is used in a high performance liquid chromatography step that is carried out using a strongly acidic cation-exchange resin, such as a styrene-divinylbenzene resin. The determination sensitivity is a concentration of only about 0.02 &mgr;M, whereby 5-hydroxycreatinine in blood of healthy persons can be determined for the first time. Moreover, only one separation solvent, such as a citrate, need be used and the cycle time for analysis is only about 14 minutes per measurement. Thus, a practitioner using one set of HPLC equipment is able to carry out about 100 determinations per day.
    • 本发明提供了用于从体液样品中测定和分离5-羟基肌氨酸的高灵敏度和实用的方法。 本发明的方法可用作肾功能障碍如尿毒症,慢性肾炎和尿路闭塞等的测试方法。在高效液相色谱步骤中使用pH 4.1至4.6的分离溶剂 其使用强酸性阳离子交换树脂如苯乙烯 - 二乙烯基苯树脂进行。 测定灵敏度仅为0.02微克浓度,可以首次测定健康人血液中的5-羟基肌氨酸。 此外,仅需要使用一种分离溶剂,例如柠檬酸盐,并且每次测量的分析循环时间仅为约14分钟。 因此,使用一套HPLC设备的从业者能够每天进行约100次测定。