Figure 1.
A model of the interaction between heparanase (Hepa), TF, and TFPI.
Heparanase interacts with TF resulting in increased generation of factor Xa and enhancement of the coagulation system. Heparanase also up-regulates TF expression and releases TFPI from the cell surface, rendering the cell surface highly procoagulant. TFPI and heparanase may circulate as a complex in the plasma.