This invention provides (1) a reagent for endotoxin assay which comprises aprotinin and a limulus amebocyte lysate reagent, (2) a kit for endotoxin assay which comprises the limulus amebocyte lysate reagent and a reagent containing aprotinin, (3) a method for assaying endotoxin in a sample using the limulus amebocyte lysate reagent in which aprotinin is added to the lysate reagent and/or the sample, (4) a method for assaying endotoxin in a serine protease-containing sample using the limulus amebocyte lysate reagent in which the sample is allowed to contact with an aprotinin-immobilized insoluble carrier in advance of endotoxin assay, (5) a carrier for pretreating a serine protease-containing sample on which aprotinin is immobilized, (6) a method for inhibiting factor G activation in which aprotinin is added to the limulus amebocyte lysate reagent and (7) a factor G activation inhibitor which comprises aprotinin as an active ingredient.
Endotoxin assay can be effected based on the factor C system reaction, without influences of factor G contained in the limulus amebocyte lysate reagent and/or serine proteases contained in samples.
本发明提供了(1)一种用于内毒素检测的试剂,该试剂由阿普罗宁和嗜酸性粒细胞裂解液试剂组成;(2)一种用于内毒素检测的试剂盒,该试剂盒由嗜酸性粒细胞裂解液试剂和含有阿普罗宁的试剂组成;(3)一种使用嗜酸性粒细胞裂解液试剂检测样品中内毒素的方法,在该方法中,阿普罗宁被添加到裂解液试剂和/或样品中、(4) 一种使用嗜灰质红细胞裂解液试剂检测含
丝氨酸蛋白酶样品中内毒素的方法,其中在检测内毒素之前让样品与凋亡素固定的不溶性载体接触、(5) 预处理含
丝氨酸蛋白酶样品的载体,其上固定有凋亡素;(6) 抑制因子 G 活化的方法,其中将凋亡素添加到嗜
酸性红细胞裂解液试剂中;(7) 由凋亡素作为活性成分的因子 G 活化
抑制剂。
内毒素检测可根据因子 C 系统反应进行,而不受纤溶红细胞裂解液试剂中的因子 G 和/或样品中的
丝氨酸蛋白酶的影响。