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  • Title: Markers of coagulation activation, endothelial stimulation and inflammation in patients with peripheral arterial disease.
    Author: Cassar K, Bachoo P, Ford I, Greaves M, Brittenden J.
    Journal: Eur J Vasc Endovasc Surg; 2005 Feb; 29(2):171-6. PubMed ID: 15649725.
    Abstract:
    OBJECTIVES: Patients with peripheral arterial disease have a significantly increased risk of cardiovascular and cerebrovascular mortality. Studies have shown that some haemostatic and inflammatory markers are elevated in these patients but the effect of the severity of the disease has not been fully documented. The aim of this study was to assess the level of coagulation activation, endothelial stimulation and inflammation in patients with claudication and critical limb ischaemia (CLI) compared to healthy controls. DESIGN AND METHODS: A prospective observational study was conducted amongst 202 subjects: 132 claudicants, 30 patients with critical ischaemia, and 40 controls. D-dimer (DD) and thrombin-antithrombin III (TAT) levels measured using ELISA as markers of coagulation activation. von Willebrand factor (vWF) and high-sensitivity C-reactive protein (CRP) levels were measured as markers of endothelial and inflammatory stimulation. RESULTS: vWF and CRP levels were significantly higher in patients with intermittent claudication (1.9 U/ml, range 0.78-4.05; p < 0.001; 3.4 mg/l, range 0.15-24; p > 0.001, respectively) and critical ischaemia (2.36 U/ml; range 1.03-5.69; p < 0.001; 7.17 mg/ml, range 0.15-174; p < 0.001, respectively) compared to controls (1.28 U/ml, range 0.62-3.13; 1.04, range 0.15-7.59 mg/l). DD was also significantly higher in claudicants (48.6 microg/ml; range 2-1741; p < 0.001) and in patients with CLI (61.1 microg/ml, range 3.65-1963; p < 0.001) compared to controls (26.1 microg/ml, range 9.65-203.1). TAT levels were significantly higher in CLI (3.14 mg/l, range 2.09-58.11), compared to controls (2.36 mg/l, range 1.49-7.38; p = 0.004). Patients with CLI had significantly higher levels of CRP, vWF, and TAT than claudicants. CONCLUSIONS: Coagulation activation and endothelial stimulation are significantly increased in patients with peripheral arterial disease compared to healthy controls. Coagulation and endothelial activation increases with the severity of the arterial disease.
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