Summary
Several known activators of the plasma kallikrein system were tested for the ability
to induce cold promoted activation of factor VII.
All the prekallikrein activators tested (EACA, trypsin, acetone, urokinase, kaolin,
Liquoid, ellagic acid) revealed generation of factor VII activator activity (CPA).
Simultaneously the plasma kallikrein system was activated. A good correlation was
demonstrated between the factor VII activation and the kallikrein activity.
Glandular kallikrein, bradykinin, or kallidin revealed no effect on the coagulation
system. Thus, the correlation between the factor VII activation and the kallikrein
system seemed to be restricted to plasma kallikrein.