Anderson R S, Day N K, Good R A
Infect Immun. 1972 Jan;5(1):55-9. doi: 10.1128/iai.5.1.55-59.1972.
Natural hemagglutinin activity against vertebrate erythrocytes is present in the hemolymph of the cockroach Blabarus craniifer. The hemagglutinin titer against rabbit erythrocytes is high, whereas sheep and horse red cells agglutinate weakly. Hemagglutinin activity was depressed by the complement inhibitor, cobra venom factor. Cockroach hemagglutinin is heat-labile; all activity is destroyed by heating at 56 C for 1 hr. A humoral factor similar to the complement component 3 proactivator is also present in cockroach hemolymph. The formation of the cobra venom factor-hemolymph "complex" is dependent on the presence of divalent cations and will not proceed at 56 C. The hemolytic intermediate formed after treatment of cockroach hemolymph with cobra venom factor was active in the presence of serum treated with ethylenediaminetetraacetic acid to inactivate the early complement components.
在美洲大蠊的血淋巴中存在针对脊椎动物红细胞的天然血凝素活性。针对兔红细胞的血凝素效价很高,而绵羊和马的红细胞凝集较弱。补体抑制剂眼镜蛇毒因子可降低血凝素活性。蟑螂血凝素对热不稳定;在56℃加热1小时可破坏所有活性。蟑螂血淋巴中还存在一种类似于补体成分3前活化剂的体液因子。眼镜蛇毒因子 - 血淋巴“复合物”的形成依赖于二价阳离子的存在,且在56℃时不会发生。用眼镜蛇毒因子处理蟑螂血淋巴后形成的溶血中间体在用乙二胺四乙酸处理以灭活早期补体成分的血清存在下具有活性。