<prompt> A 56-year-old man is surgically treated by a four-vessel coronary aery bypass graft procedure and placed on prophylactic daily aspirin therapy. Aspirin has been shown to prevent recurrent myocardial infarction through its ability to inhibit the synthesis ofAdenosine diphosphate ADP.Leukotriene B4 LTB4Nitric oxide NO.Thromboxane A2 TXA2  <response>: Aspirin Irreversibly inhibits the enzymes cyclooxygenase 1 and 2 Inhibits synthesis of Thromboxane A2 TxA2. TxA2 promotes platelet aggregation,as does ADP. Aspirin inhibits platelet aggregation, which is an impoant early step in atherogenesis. 