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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
    • Analytical method making use of monoglyceride lipase
    • 使用单甘油脂肪酶的分析方法
    • US5162201A
    • 1992-11-10
    • US668169
    • 1991-03-12
    • Shigeyuki ImamuraMamoru TakahasiHideo MisakiKazuo Matsuura
    • Shigeyuki ImamuraMamoru TakahasiHideo MisakiKazuo Matsuura
    • C12N9/18C12Q1/44
    • C12Q1/44C12N9/18
    • Disclosed herein is a novel monoglygeride lipase at least capable of catalyzing an enzymatic reaction of the following equation (a) and as substrate specificity, capable of acting on monoglyceride but incapable of acting on diglyceride and triglyceride:Monoglyceride+H.sub.2 O.fwdarw.Glycerol+Fatty acid (a)The monoglyceride lipase is produced by culturing a specific monoglyceride lipase producing microorganism of Bacillus and then collecting the monoglyceride lipase from the resulting culture. A method is also disclosed for the analysis of a monoglyceride-containing sample solution. The monoglyceride lipase is caused to act on the sample solution upon measurement of the monoglyceride in the sample solution. Either one of glycerol and the fatty acid formed in accordance with the equation (a) is then measured.
    • 本文公开了一种新颖的单甙脂肪酶,其至少能够催化以下等式(a)的酶反应和作为底物特异性,其能够作用于甘油单酯但不能作用于甘油二酯和甘油三酸酯:单甘油酯+ H 2 O→甘油+脂肪酸 (a)单酸甘油酯脂肪酶是通过培养产生芽孢杆菌的特定单酸甘油酯脂肪酶微生物,然后从得到的培养物中收集单甘油脂肪酶产生的。 还公开了用于分析含单甘油酯的样品溶液的方法。 当测量样品溶液中的单甘油酯时,使甘油单酯脂肪酶作用于样品溶液。 然后测量根据方程(a)形成的甘油和脂肪酸中的任一种。
    • 7. 发明授权
    • Method of high-sensitive analysis of bile acid and reagent composition
for the analysis
    • 胆汁酸敏感性分析方法及试剂组成分析
    • US5286627A
    • 1994-02-15
    • US510716
    • 1990-04-18
    • Shigeru UedaMasashi TannoHideo Misaki
    • Shigeru UedaMasashi TannoHideo Misaki
    • C12Q1/32C12Q1/60C12N9/02C12N9/08C12Q1/26
    • C12Q1/32Y10S435/81
    • A method for a high-sensitivity quantitative analysis of bile acid in a bile acid-containing sample utilizes a reagent comprising:(1) a steroid dehydrogenase which is capable of effecting a reversible reaction producing oxobile acid using bile acid, as a substrate, and a nicotinamide adenine dinucleotide phosphate compound (hereinafter referred to as an NADP compound) or a nicotinamide adenine dinucleotide compound (hereinafter referred to as an NAD compound) as coenzyme;(2) a compound A.sub.1 selected from the group consisting of NADP compounds and NAD compounds, in an amount surplus relative to the amount of bile acid;(3)(i) compound B.sub.1 selected from the group consisting of a reduced NAD compound and a reduced NADP compound, compound B.sub.1 being a reduced NAD compound, when A.sub.1 is an NADP compound, and a reduced NADP compound, when A.sub.1 is an NAD compound, or(ii) a compound B.sub.2 which is an oxidized product of B.sub.1, or(iii) a mixture of B.sub.1 and B.sub.2, where the amount of B.sub.1 plus B.sub.2 is less than 1/100 of the molar amount of A.sub.1, and(iv) a second dehydrogenase which does not react with bile acid and compound A.sub.1, but does effect a reaction converting compound B.sub.2 into compound B.sub.1, and the substrate of the second dehydrogenase.
    • 用于胆汁酸样品中胆汁酸的高灵敏度定量分析的方法使用试剂,其包括:(1)能够实现使用胆汁酸作为底物产生氧化酸的可逆反应的类固醇脱氢酶,以及 烟酰胺腺嘌呤二核苷酸磷酸化合物(以下称为NADP化合物)或烟酰胺腺嘌呤二核苷酸化合物(以下称为NAD化合物)作为辅酶; (2)选自NADP化合物和NAD化合物的化合物A1,相对于胆汁酸量为过量; (3)(A1)当NAD为NAD的化合物时,当A1为NADP化合物时,化合物B1为还原的NAD化合物,还原的NADP化合物为化合物B1,还原的NADP化合物为NAD 化合物,或(ii)作为B1的氧化物的化合物B2或(iii)B1和B2的混合物,其中B1加B2的量小于A1摩尔量的1/100,和( iv)不与胆汁酸和化合物A1反应的第二脱氢酶,但是将化合物B2转化为化合物B1和将第二脱氢酶的底物进行反应。
    • 10. 发明授权
    • Highly sensitive enzymatic assay method
    • 高灵敏度酶法测定
    • US4791057A
    • 1988-12-13
    • US757953
    • 1985-07-23
    • Hideo MisakiShigeru Ueda
    • Hideo MisakiShigeru Ueda
    • G01N33/50C12Q1/26C12Q1/28C12Q1/32G01N33/74G01N33/92
    • G01N33/92C12Q1/26C12Q1/32G01N33/743Y10S436/817
    • A highly sensitive quantitative assay method for a component which is 3.beta.-hydroxysteroid or 3-ketosteroid, in a specimen to be assayed, comprising causing this component in the specimen to take part in the cycling reaction ##STR1## and measuring a detectable change in the reaction system. There is thus provided a 3.beta.-hydroxysteroid - 3-ketosteroid cycling reaction using 3.beta.-hydroxysteroid oxidase, which consumes O.sub.2 and generates H.sub.2 O.sub.2 and 3-ketosteroid, with a substrate of 3.beta.-hydroxysteroid, or 3.beta.-hydroxysteroid dehydrogenase, which consumes reduced NAD(P) and generate NAD(P) and 3.beta.-hydroxysteroid, with a substrate of 3-ketosteroid. Example of specimens are specimens which contain 3-hydroxysteroid or 3-ketosteroid, or which liberate or generate such a component. By proceeding at a rate of more than ten cycles per minute and measuring the amount of a detectable change in the reaction, the component in a specimen can easily and sensitively be detected with good accuracy.
    • 在待测样品中的3β-羟基类固醇或3-酮甾类成分的高度灵敏的定量测定方法,包括使样品中的该组分参与循环反应&IMAGE>并测量可检测的变化 反应体系。 因此,提供了使用3种β-羟基类固醇氧化酶的3β-羟基甾类-3-酮类固醇循环反应,其消耗O 2并产生H 2 O 2和3-酮甾类,具有3β-羟基类固醇或3β-羟基类固醇脱氢酶的底物,其中 消耗NAD(P)并产生NAD(P)和3β-羟基类固醇,与3-酮类固醇的底物。 样品的实例是含有3-羟基类固醇或3-酮甾类的样品,或释放或产生这样的组分。 通过以每分钟超过10个循环的速率进行测量并测量反应中可检测的变化量,可以以高精度容易且灵敏地检测样品中的组分。