Method of measuring biological ligand by the use of enzymes
    21.
    发明授权
    Method of measuring biological ligand by the use of enzymes 失效
    通过使用酶测量生物配体的方法

    公开(公告)号:US4692404A

    公开(公告)日:1987-09-08

    申请号:US670764

    申请日:1984-11-13

    摘要: A method is provided which is highly sensitive and specific, and is suitable as a clinical test for the determination of physiological substances and trace components in humoral fluid. The method employs a conjugate of an enzyme capable of acting on a water-insoluble macromolecular substance and an antibody against the ligand (1) to be measured or a ligand (2) having an antigenic determinant common to one of the antigenic determinant(s) of the ligand (1). In the method of the invention, steric hindrance of the conjugate is emphasized by the enzyme reaction which is carried out at the boundary between solid phase and liquid phase.

    摘要翻译: 提供了一种高灵敏度和特异性的方法,适用于测定体液中生理物质和微量成分的临床试验。 该方法使用能够作用于水不溶性大分子物质的酶和针对要测量的配体(1)的抗体的缀合物或具有抗原决定簇之一共有的抗原决定簇的配体(2) 的配体(1)。 在本发明的方法中,通过在固相和液相之间的边界处进行的酶反应来强调缀合物的空间位阻。

    Enzyme-labeled immunoassay and device therefor
    26.
    发明授权
    Enzyme-labeled immunoassay and device therefor 失效
    酶标记免疫测定及其装置

    公开(公告)号:US06221625B1

    公开(公告)日:2001-04-24

    申请号:US09017214

    申请日:1998-02-02

    IPC分类号: G01N3353

    摘要: An enzyme-labeled immunoassay is performed by the steps of allowing a test sample to react with an enzyme-labeled reagent, allowing a substrate to react with the enzyme to form a signal, and immobilising the enzyme-labeled reagent, with the prevention of a further signal formation from a predetermined time on after the immobilisation of the enzyme-labeled reagent, using an enzyme inhibitor. A device for performing this enzyme-labeled immunoassay includes an absorbent material capable of transporting a developing solution by capillary action, the absorbent material including (a) a developing liquid application zone, (b) an enzyme-labeled reagent zone containing an enzyme-labeled reagent, (c) a sample receiving zone, and (d) an indicator reagent zone capable of immobilising the enzyme-labeled reagent after the reaction of the test sample with the enzyme-labeled reagent in an amount dependent on the assay result, with an enzyme inhibitor being applied to a portion in the absorbent material upstream of the enzyme-labeled reagent zone, which enzyme inhibitor prevents the formation of a signal from a predetermined time on after the enzyme-labeled reagent is immobilised at the indicator reagent zone.

    摘要翻译: 通过以下步骤进行酶标记的免疫测定:使测试样品与酶标记的试剂反应,允许底物与酶反应以形成信号,并固定酶标记的试剂,同时防止 使用酶抑制剂从固定酶标记的试剂之后的预定时间进一步形成信号。 用于进行该酶标记免疫测定的装置包括能够通过毛细作用输送显影液的吸收材料,所述吸收材料包括(a)显影液体施用区,(b)酶标记的试剂区,其含有酶标记的 试剂,(c)样品接收区,和(d)指示剂试剂区,其能够在测试样品与酶标记的试剂反应后以取决于测定结果的量固定酶标记的试剂, 酶抑制剂被施加到酶标记试剂区上游的吸收材料的一部分,该酶抑制剂防止在酶标记的试剂固定在指示剂试剂区之后的预定时间内形成信号。

    Chemiluminescence assays using stabilized dioxetane derivatives
    29.
    发明授权
    Chemiluminescence assays using stabilized dioxetane derivatives 失效
    使用稳定的二氧杂环丁烷衍生物的化学发光测定

    公开(公告)号:US5094939A

    公开(公告)日:1992-03-10

    申请号:US382112

    申请日:1989-07-19

    IPC分类号: C07F9/655 C12Q1/42 C12Q1/68

    摘要: A multi-pH chemiluminescence-based assay method comprising first-stage light production by the activation by cleavage of a phosphatase cleavable dioxetane derivative within a pH range optimal for enzyme catalysis, followed by the second-stage generation of increased light energy from the products of enzyme-catalyzed cleavage of the dioxetane derivative by the adjustment of the pH to a strongly alkaline pH optimal for the generation of light energy. The assay method is suitable for both solution phase and solid state assay formats. Light generation enhancers can be used further to increase the light yield.

    摘要翻译: 一种基于多pH化学发光的测定方法,其包括通过在最适于酶催化的pH范围内切割磷酸酶裂解的二氧杂环丁烷衍生物进行激活的第一阶段光产生,随后是来自产物的第二阶段产生增加的光能 通过将pH调节至最适于产生光能的强碱性pH的二氧杂环丁烷衍生物的酶催化裂解。 测定方法适用于溶液相和固态分析方法。 光产生增强剂可以进一步用于增加光产率。

    Method for determining the activity of cholinesterases
    30.
    发明授权
    Method for determining the activity of cholinesterases 失效
    确定胆碱酯酶活性的方法

    公开(公告)号:US4419445A

    公开(公告)日:1983-12-06

    申请号:US360723

    申请日:1982-03-22

    IPC分类号: G01N33/50 C12Q1/46 C12Q1/26

    CPC分类号: C12Q1/46 C12Q2334/00

    摘要: A method for determining the activity of cholinesterase comprising the steps of:mixing a solution containing p-methoxybenzoate demethylmonooxygenase, nicotinamide adenine dinucleotide reduced form (NADH) and p-methoxybenzoyl choline cation having the following formula: ##STR1## with a liquid containing cholinesterase, measuring the decrease in absorbance of light by NADH, which is based on a consumption of NADH, and calculating the activity of cholinesterase therefrom.

    摘要翻译: 一种确定胆碱酯酶活性的方法,包括以下步骤:将含有对甲氧基苯甲酸甲酯脱甲基单加氧酶,烟酰胺腺嘌呤二核苷酸还原形式(NADH)和具有下式的对甲氧基苯甲酰胆碱阳离子的溶液与含有胆碱酯酶的液体混合, 测量基于NADH消耗的NADH对光的吸光度的降低,并计算其中胆碱酯酶的活性。