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    • 4. 发明申请
    • METHOD FOR DETERMINING THE CONCENTRATION OF HMG-COA REDUCTASE INHIBITORS
    • 测定HMG-COA还原酶抑制剂浓度的方法
    • US20130309705A1
    • 2013-11-21
    • US13983044
    • 2012-01-12
    • Zhenwen DuanShuren GuoXuemei Li
    • Zhenwen DuanShuren GuoXuemei Li
    • C12Q1/26
    • C12Q1/26
    • The invention, which belongs to the field of enzymology and pharmaceutical chemistry, relates to a method for determining the concentration of a HMG-CoA reductase inhibitor, and to a method for determining the inhibition rate of HMG-CoA reductase. In particular, the method for determining the inhibition rate of HMG-CoA reductase comprises the following steps: 1) establishing the following enzymatic reaction systems for HMG-CoA reductase: a reaction system for a sample to be tested, to which a sample to be tested is added, and a negative control reaction system, to which deionized water in the same volume as a sample to be tested is added; 2) determining the MVAL concentration in a negative control reaction system and in a reaction system for a sample to be tested by HPLC-MS/MS method, respectively; 3) calculating the inhibition rate of HMG-CoA reductase according to the formula: inhibition rate of HMG-CoA reductase=[(MVAL concentration in a negative control reaction system−MVAL concentration in a reaction system for a sample to be tested)/MVAL concentration in a negative control reaction system]×100%. The inhibition rate of HMG-CoA reductase can be accurately determined by the method.
    • 属于酶学和药物化学领域的本发明涉及确定HMG-CoA还原酶抑制剂浓度的方法以及确定HMG-CoA还原酶抑制率的方法。 具体而言,HMG-CoA还原酶的抑制率的测定方法包括以下步骤:1)建立HMG-CoA还原酶的下述酶反应体系:待测样品的反应体系, 加入测试的阴性对照反应体系,加入与待测试样品相同体积的去离子水; 2)分别通过HPLC-MS / MS方法确定阴性对照反应体系和待测试样品的反应体系中的MVAL浓度; 3)根据以下公式计算HMG-CoA还原酶的抑制率:HMG-CoA还原酶的抑制率= [((对于待测试样品的反应体系中阴性对照反应体系中的MVAL浓度 - MVAL浓度)/ MVAL 阴性对照反应体系中的浓度]×100%。 HMG-CoA还原酶的抑制率可以通过该方法准确测定。