Thromboxane A
2
-Prostaglandin
Platelet pathway
Pathways of synthesis :
Endothelial cell pathway
Arachidonic acid
Arachidonic acid
prostaglandins
prostaglandins
Thromboxane A
2
Prostacyclins
Cyclo-oxygenase
Thromboxane
synthetase
Prostaglandin
synthetase
Stimulates
aggregation
Inhibits
aggregation