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    • 102. 发明公开
    • Method of measuring a biological ligand
    • Verfahren zur Messung eines biologischen Ligands。
    • EP0144176A2
    • 1985-06-12
    • EP84307834.6
    • 1984-11-13
    • FUJIREBIO KABUSHIKI KAISHA also trading as FUJIREBIO INC.
    • Ashihara, YoshihiroKasahara, Yasushi
    • G01N33/542G01N33/74G01N33/68G01N33/569G01N33/574G01N33/563G01N33/577
    • G01N33/542G01N33/535G01N33/573G01N33/581G01N33/74Y10S435/963Y10S435/97Y10S436/813Y10S436/815
    • A method of determining a biological ligand which is highly sensitive and specific and which is suitable for use as a clinical test for the determination of physiological substances and trace components in humoral fluid comprises allowing there to coexist in an aqueous medium a system comprising (A) a ligand (1) to be measured, (8) either a combination (1) of an antibody against the ligand (1) and an enzyme capable of acting on a water-insoluble macromolecular substance or a combination (2) of a said enzyme and a ligand (2) having an antigenic determinant which is an antigenic determinant of said ligand (1), which combination (2) is present in the aqueous medium together with a said antibody, and (C) a said macromolecular substance, determining the residual activity of the enzyme after it has acted on said macromolecular substance and utilising the measurement thereby obtained as a measure of the biological ligand. The inventive method makes use of the steric hindrance of the combination (1) or (2) for the enzyme reaction which is carried out at the boundary between solid phase and liquid phase.
    • 确定高灵敏度和特异性的并且适用于测定体液中的生理物质和微量组分的临床试验的生物配体的方法包括允许在含水介质中共存包含(A) 待测量的配体(1),(B)针对配体(1)的抗体的组合(1)和能够作用于水不溶性大分子物质的酶或所述酶的组合(2) 和具有作为所述配体(1)的抗原决定簇的抗原决定簇的配体(2),所述组合(2)与所述抗体一起存在于水性介质中,和(C)所述大分子物质, 酶在作用于所述大分子物质之后的残留活性,并利用由此获得的测量作为生物配体的量度。 本发明的方法利用在固相和液相之间边界进行的酶反应的组合(1)或(2)的空间位阻。