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    • 2. 发明授权
    • Method for the quantitative determination of D-3-hydroxybutyric acid and
acetoacetic acid, and analytical reagent therefor
    • 定量测定D-3-羟基丁酸和乙酰乙酸的方法及其分析试剂
    • US5633143A
    • 1997-05-27
    • US244450
    • 1994-05-26
    • Shigeru UedaHideo MisakiShigeru IkutaMamoru Takahashi
    • Shigeru UedaHideo MisakiShigeru IkutaMamoru Takahashi
    • C12Q1/32C12Q1/52G01N31/00G01N33/53
    • C12Q1/32Y10S435/966Y10S435/973Y10T436/104998
    • Disclosed is a method for the quantitative determination of D-3-hydroxybutyric acid and acetoacetic acid, which comprises reacting a biological sample containing D-3-hydroxybutyric acid and acetoacetic acid, with a reagent comprising: (1) a D-3-hydroxybutyrate dehydrogenase, (2) A.sub.1 and (3) B.sub.1, the components (1), (2) and (3) participating in the following cycling reaction: ##STR1## thereby effecting the enzymatic cycling reaction, and measuring a change in the amount of A.sub.2 formed or the amount of B.sub.1 consumed. Also disclosed is an analytical reagent comprising the components (1), (2) and (3) for use in the above method. The method and the analytical reagent ensure rapidness and accuracy in the determination of D-3-hydroxybutyric acid and acetoacetic acid, even with the use of a small quantity of a biological sample, so that they are very useful in application fields, such as clinical diagnosis and food testing.
    • PCT No.PCT / JP91 / 01706 Sec。 371日期:1994年5月26日 102(e)日期1994年5月26日PCT 1991年12月12日PCT PCT。 公开号WO93 / 12254 日期:1993年6月24日公开是定量测定D-3-羟基丁酸和乙酰乙酸的方法,其包括使含有D-3-羟基丁酸和乙酰乙酸的生物样品与包含以下物质的试剂反应:(1) D-3-羟基丁酸脱氢酶,(2)A1和(3)B1,参与以下循环反应的组分(1),(2)和(3):进行酶循环反应,并测量 形成的A2的量的变化或消耗的B1的量。 还公开了包含用于上述方法的组分(1),(2)和(3)的分析试剂。 该方法和分析试剂确保即使使用少量生物样品也能快速,准确地测定D-3-羟基丁酸和乙酰乙酸,因此它们在临床应用领域非常有用 诊断和食品检测。
    • 3. 发明授权
    • Highly sensitive assay method for myo-inositol, composition for
practicing same, novel myo-inositol dehydrogenase, and process for
producing same
    • 肌醇的高灵敏度测定方法,实践相同的组合物,新型肌醇脱氢酶及其制备方法
    • US5356790A
    • 1994-10-18
    • US106693
    • 1993-08-16
    • Shigeru UedaMamoru TakahashiHideo MisakiShigeyuki ImamuraKazuo Matsuura
    • Shigeru UedaMamoru TakahashiHideo MisakiShigeyuki ImamuraKazuo Matsuura
    • C12N9/04C12Q1/02C12Q1/32C12Q1/26C07H1/00C12N11/00
    • C12N9/0006C12Q1/02C12Q1/32C12R1/07Y10S436/817
    • Myo-inositol in a specimen is assayed by reacting a specimen containing myo-inositol with:a) myo-inositol dehydrogenase using a thio-NADP group or thio-NAD group and an NADP group or NAD group as coenzymes, and which catalyzes a reversible reaction forming myo-inosose from myo-inositol,b ) A.sub.1 andc) B.sub.1to effect a cycling reaction ##STR1## wherein A.sub.1 is a thio-NADP group, thio-NAD group, NADP group or NAD group, A.sub.2 is a reduced form of A.sub.1, when A.sub.1 is a thio-NADP group or thio-NAD group, B.sub.1 is a reduced NADP group or reduced NAD group and when A.sub.1 is an NADP group or NAD group, B.sub.1 is a reduced thio-NADP group or reduced thio-NAD group, and wherein B.sub.2 is an oxidized form of B.sub.1. The change in the amount of A.sub.2 generated or B.sub.1 consumed by the cycling reaction is measured to perform the assay. A composition for performing the assay comprises the above myo-inositol dehydrogenase, as well as the above components A.sub.1 and B.sub.1. The myo-inositol dehydrogenase can be produced by culturing a suitable microorganism belonging to genus Bacillus, particularly Bacillus sp. No. 3 FERM BP-3013.
    • 通过使含有肌醇的样品与以下物质反应来测定样品中的肌醇:a)使用硫代NADP基团或硫代NAD基团和NADP基团或NAD基团作为辅酶的肌醇脱氢酶,并催化可逆的 由肌球蛋白形成肌内单糖的反应,b)A1和c)B1进行循环反应,其中A1是硫代NADP基团,硫代NAD基团,NADP基团或NAD基团,A2是还原形式 的A1,当A1是硫代NADP基团或硫代NAD基团时,B1是还原的NADP基团或还原的NAD基团,当A1是NADP基团或NAD基团时,B1是还原的硫代NADP基团或还原的硫代 - NAD基,其中B2是B1的氧化形式。 测量由循环反应消耗的A2产生量或B1的量的变化以进行测定。 用于进行测定的组合物包含上述肌醇脱氢酶,以及上述组分A1和B1。 肌醇脱氢酶可以通过培养属于芽孢杆菌属(Bacillus),特别是芽孢杆菌属(Bacillus sp。)的合适的微生物来产生。 3号FERM BP-3013。