Aspirin was injected at 100 mg/kg, 1 mg/kg and at several different aspirin dilutions along with cyclooxygenase (COX) 1 (SC-560), COX 2 (NS-398) or both selective inhibitors simultaneously using a laser-induced thrombosis model.
Evolutionary, this mechanism may prevent COX-2-dependent thromboxane synthesis in the platelet, which would potentiate the likelihood of thrombosis; pharmacologically, this mechanism would prevent an aspirin-insensitive pathway of thromboxane formation.