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Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
Published on: December 11, 2013
Evaluation of the coagulation and fibrinolytic systems in men with intermittent claudication
1Department of Internal Medicine, School of Medicine, Fukuoka University, Japan.
Insights
Patients with intermittent claudication show altered coagulation and fibrinolysis markers. Elevated lipoprotein(a), fibrinogen, and thrombomodulin, alongside decreased alpha 2-plasmin inhibitor, suggest endothelial injury and system activation.
Area of Science:
- Vascular Biology
- Hemostasis and Thrombosis
Background:
- Intermittent claudication is a manifestation of peripheral artery disease.
- The role of coagulation and fibrinolytic systems in intermittent claudication is not fully understood.
Purpose of the Study:
- To investigate differences in coagulation and fibrinolytic markers between patients with intermittent claudication and matched controls.
- To identify potential biomarkers for endothelial injury in intermittent claudication.
Main Methods:
- Coagulation and fibrinolytic system parameters were measured in 18 male patients with intermittent claudication and 19 healthy male controls.
- Standard laboratory assays were used to quantify various hemostatic factors.
Main Results:
- Significantly higher levels of lipoprotein(a), thrombomodulin, fibrinogen, and alpha 1-antitrypsin were observed in patients.
- Patients exhibited lower levels of alpha 2-plasmin inhibitor and higher levels of alpha 2-plasmin inhibitor/plasmin complex and thrombin/antithrombin III complex.
- Prothrombin time, activated partial thromboplastin time, plasminogen, protein C, alpha 2-macroglobulin, C1-inactivator, and antithrombin III did not significantly differ.
Conclusions:
- Coagulation and fibrinolytic systems appear activated in patients with intermittent claudication.
- Thrombin/antithrombin III complex, alpha 2-plasmin inhibitor/plasmin complex, and thrombomodulin may indicate peripheral endothelial injury.
Abstract:
The authors evaluated elements of the coagulation and fibrinolytic systems in 18 male patients with intermittent claudication vs 19 men matched for risk factors who served as controls. Prothrombin time and activated partial thromboplastin time did not significantly differ in the patients and the controls. The plasminogen level in the two groups was not significantly different. The level of lipoprotein(a) was significantly higher in the patients than in the controls. The levels of antigen and the activity of protein C did not differ significantly between the two groups. The thrombomodulin level was significantly higher in the patients than in the controls. There were no significant differences between the two groups in the levels of alpha 2-macroglobulin, C1-inactivator, or antithrombin III. The levels of fibrinogen and alpha 1-antitrypsin were significantly higher in the patients vs the controls. Significantly lower levels of alpha 2-plasmin inhibitor and higher levels of alpha 2-plasmin inhibitor/plasmin complex and thrombin/antithrombin III complex were found in the patients vs the controls. These findings suggest that the levels of thrombin/antithrombin III complex, alpha 2-plasmin inhibitor/plasmin complex, and thrombomodulin may perhaps serve as indicators for injury to the peripheral endothelium and that the coagulation and fibrinolytic systems may be activated in patients with intermittent claudication.
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