Intrinsic Fibrinolytic Capacity and Systemic Inflammation: Novel Risk Factors for Arterial Thrombotic Disease

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Abstract
Traditional risk factors, e.g. hyperlipidemia, cigarette consumption, blood pressure, family history, and diabetes, predict < 50% of all future cardiovascular events. This paper reviews the use of novel hemostatic and thrombotic markers, such as intrinsic fibrinolysis and systemic micro-inflammation, for the prediction of the risk of arterial thrombotic disease. It has been hypothesized that relative abnormalities in the hemostatic and thrombotic systems are common on a population basis, and that they predispose certain individuals to clinically pathologic thrombosis. Abnormal levels of fibrinolytic parameters have been shown to predict future cardiovascular events, and tissue-type plasminogen activator antigen appears to be the most useful of these markers. Low-grade chronic inflammation may play an important role in athero-genesis. Of the newer inflammatory parameters, C-reactive protein has been the best studied and evidence suggests that elevated levels of C-reactive protein can predict the future risk of both myocardial infarction and stroke, both in healthy individuals and in patients with known coronary artery disease. Results from clinical trials to evaluate whether modification of novel risk factors results in a net clinical benefit are limited at present. However, novel markers will probably provide new directions in both thrombosis research and disease prevention.

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