首都医科大学学报 ›› 1988, Vol. 9 ›› Issue (1): 7-11.

• 论著 • 上一篇    下一篇

血栓素B2酶免疫分析

李林1, 申京建1, 金有豫1, 曾贞元2   

  1. 1. 首都医学院药理学教研室;2. 上海生物制品研究所
  • 收稿日期:1987-05-01 修回日期:1900-01-01 出版日期:1988-01-15 发布日期:1988-01-15

Enzyme Immunoassay of Thromboxane B2

Li Lin1   

  1. Department of Pharmacology, Capital Institute of Medicine
  • Received:1987-05-01 Revised:1900-01-01 Online:1988-01-15 Published:1988-01-15

摘要: 本文介绍了血小板释放TXB2的酶免疫分析法。用混合酸酐法交联β-半乳糖苷酶与TXB2。通过双抗体沉淀法分离免疫复合物与游离TXB2。以4-甲基伞形酮-β-D-半乳糖苷作底物测定酶促反应产物的荧光强度。该方法TXB2最低检测值<0.008pmol(<3.125pg),批内变异系数为5.9%,批间变异系数为5.4%。酶免疫分析法与放射免疫分析法测定血小板样品进行比较,直线相关系数r=0.955,回归方程Y=0.811x+1.397。

关键词: 酶免疫分析法, 血栓素, 血小板

Abstract: An enzyme immunoassay for the measurement of TXB2 Was developed. TXB2 Was coupled with β-galactosidase by mixed anhydride reaction. The separation of immunocomplex from the free form of TXB2 Was accompli-shed by the double antibody method. The precipitated enzyme activity was measured fluorometrically with 4-methyl-umbelliferyl-β-D-galactoside as substrate. The sensitivity of this method is <0.008pmol (<3.125pg) per tu-be. The inter-assay and intra-assay coefficients of variation (CV) were 5.9% and 5.4% respectively. TXB2 during AA-induced aggregation of ra-bbit platelets Was directly measured, and regression analysis of the data comparing EIA (Y) and RIA (X) gave the equation Y=0.821X+1.397, cor-relation coefficient r=0.955.

Key words: enzyme immunoassay, thromboxane, platelet