阿替普酶 (Activase, Cathflo, Cathflo Activase)

概览

Alteplase is a recombinant form of human tissue plasminogen activator used in the emergency treatment of myocardial infarction, ischemic stroke, and pulmonary emboli.

作用机制

Alteplase is a recombinant tissue plasminogen activator (rt-PA) that converts plasminogen to plasmin in a fibrin-dependent process. In the absence of fibrin, alteplase converts a limited amount of plasminogen. However, in the presence of fibrin clots, alteplase binds to fibrin and cleaves the arginine-valine bond at positions 560 and 561 of plasminogen, converting it into its active form, plasmin. Plasmin in turn degrades the fibrin matrix of the thrombus and promotes clot dissolution. Alteplase initiates local fibrinolysis with limited systemic proteolysis.

适应症

Alteplase is indicated for the treatment of acute ischemic stroke (AIS) and for use in acute myocardial infarction (AMI) for the reduction of mortality and incidence of heart failure. Alteplase is also indicated for the lysis of acute massive pulmonary embolism, defined as acute pulmonary emboli obstructing blood flow to a lobe or multiple lung segments, and acute pulmonary emboli accompanied by unstable hemodynamics.

• Acute Ischemic Stroke
• Cardiac mortality
• Heart Failure
• Pulmonary Embolism Acute Massive
• Central venous access device thrombosis