[New antithrombotic agents]

The wide range of compounds currently being developed is the result of the continuing need for validated new antithrombotic agents. The prevention and treatment of venous thrombosis is predominated by anticoagulants: low molecular weight heparins, and potentially new antithrombin agents including hirudin. The effectiveness of new antiplatelet agents, and particularly c7E3 and integrelin, confirms the hypothesis concerning the role played by platelets in thrombogenesis in coronary arteries. But, due to the proaggregating effect of thrombin, anticoagulants could also have an important role in preventing arterial clots, either when given alone or in combination. Finally, the development of antithrombin and anti-platelet-glycoprotein IIb IIIa given orally is one of the major objectives of current research. Until the ideal antithrombotic agent is discovered, multiple-drug regimens combining anticoagulants and/or antiplatelet agents could be proposed in patients with a very high risk of thrombosis. Such regimens must taken into account the increased risk of bleeding and be adapted on the basis of careful laboratory surveillance.