Summary and Conclusion
Nine, 18 and 36 mg per kg body weight of a crude cephalin prepared from rat brain
were suspended in saline and injected intraperitoneally in rats. The influence on
coagulation, platelet adhesiveness, antifibrinolytic activity and incidence of experimental
venous thrombosis was studied.
The following observations were made:
1. The recalcification time of plasma was shortened maximally one hour after the injection,
with gradual return to normal values. Normal recalcification time was obtained 24
hours after the injection of the lowest dose, whereas it was still slightly shortened
after the higher doses.
2. The number of adhesive platelets increased, whereas no antifibrinolytic activity
was found.
3. An increased incidence of experimental venous thrombosis was observed.
Thus, there seems to be a relation between increased platelet adhesiveness, accelerated
recalcification time and the tendency to venous thrombosis.