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Protein C and protein S activities in Behçet's disease as risk factors of thrombosis
Insights
Protein C and Protein S deficiencies are unlikely causes of thrombosis in Behçet's disease (BD). Routine measurement of these coagulation inhibitors is not recommended for BD patients unless thrombosis is the primary symptom.
Area of Science:
- Vascular Medicine
- Hematology
- Rheumatology
Background:
- Behçet's disease (BD) is characterized by a high incidence of vascular complications, including arterial and venous thrombosis.
- Approximately 30% of BD patients experience thrombotic events, such as deep vein thrombophlebitis and aneurysms.
- Deficiencies in Protein C and Protein S, key coagulation inhibitors, are known causes of thrombotic disorders.
Purpose of the Study:
- To investigate the potential role of Protein C and Protein S deficiencies in the pathogenesis of thrombotic manifestations in Behçet's disease.
Main Methods:
- Assessed Protein C and Protein S activities in 23 patients diagnosed with Behçet's disease.
- Included a control group of 23 age- and sex-matched healthy volunteers for comparison.
- Excluded patients on anticoagulant or oral contraceptive drugs, with liver disease, or active thrombosis.
Main Results:
- Mean Protein S activity in BD patients (94.2 +/- 11.3%) was slightly lower than in controls (109.1 +/- 8.4%), but the difference was not statistically significant (p > 0.05).
- Protein C activity in BD patients (106.3 +/- 8.4%) was comparable to controls (103.5 +/- 6.9%), with no statistically significant difference observed.
- No significant differences in Protein C or Protein S activities were found between Behçet's disease patients and healthy controls.
Conclusions:
- Protein C and Protein S deficiencies are unlikely to be the primary cause of thrombotic events in Behçet's disease.
- Routine measurement of Protein C and Protein S activities is not advised for Behçet's disease patients.
- Testing for these deficiencies should be considered only when thrombosis is the predominant clinical feature of Behçet's disease.
Background:
In Behçet's disease (BD), there is a marked increase in vascular complications. Approximately 30% of patients with BD suffer from thrombosis of the arteries and veins, varices, aneurysms, and thrombophlebitis of superficial or deep veins. Protein C and Protein S are major inhibitors of coagulation, and it is well known that the deficiency of Protein C and Protein S causes thrombotic disorders.
Methods:
Protein C and Protein S activities were measured in 23 patients with BD and in a control group consisting of 23 age- and sex-matched healthy volunteers. Patients who had received anticoagulant or oral contraceptive drugs, or who had liver disease or active thrombosis, were not included in the study.
Results:
Of the 23 patients with BD (age, 13-55 years), the mean Protein S activities (94.2 +/- 11.3%) were slightly lower than the means of the control group (109.1 +/- 8.4%), but not statistically significant differences could be demonstrated (p > 0.05). Compared with the means of the control group (103.5 +/- 6.9%), the Protein C activities were not lower in BD (106.3 +/- 8.4%). No statistical difference was determined.
Conclusions:
Protein C and Protein S deficiencies are not a probable cause of thrombotic manifestations in BD. We do not recommend the measurement of these activities routinely in BD unless thrombosis is the major and primary manifestation of BD.