High levels of procoagulant factors mediate the association between free thyroxine and the risk of venous thrombosis: the MEGA study
| Autor: | F. R. Rosendaal, Catharina Jacoba Maria Doggen, J. Debeij, Suzanne C. Cannegieter, V. E. A. Gerdes, H.R. Büller, B. van Zaane, Olaf M. Dekkers, Jan W. A. Smit, A. P. van Zanten, D. P. M. Brandjes |
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| Přispěvatelé: | Vascular Medicine, Amsterdam Cardiovascular Sciences, Faculty of Behavioural, Management and Social Sciences |
| Rok vydání: | 2014 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent METIS-308573 medicine.drug_class thyroid-stimulating hormone coagulation factors Fibrinogen Risk Assessment Protein S Healthcare improvement science Radboud Institute for Health Sciences [Radboudumc 18] Young Adult Von Willebrand factor Risk Factors Internal medicine Odds Ratio medicine Humans Blood Coagulation thrombosis Aged Netherlands thyroxine Venous Thrombosis biology business.industry Anticoagulant Antithrombin Hematology Middle Aged medicine.disease IR-93902 Thrombosis Blood Coagulation Factors Up-Regulation Venous thrombosis Logistic Models Endocrinology Case-Control Studies biology.protein Female epidemiology business Biomarkers hormones hormone substitutes and hormone antagonists Protein C medicine.drug |
| Zdroj: | Journal of Thrombosis and Haemostasis Journal of thrombosis and haemostasis, 12(6), 839-846. Wiley-Blackwell Journal of Thrombosis and Haemostasis, 12, 839-46 Journal of Thrombosis and Haemostasis, 12, 6, pp. 839-46 Journal of thrombosis and haemostasis, 12, 839-846. Wiley-Blackwell Journal of Thrombosis and Haemostasis, 12(6), 839-846 |
| ISSN: | 1538-7836 1538-7933 |
| DOI: | 10.1111/jth.12573 |
| Popis: | Contains fulltext : 138169.pdf (Publisher’s version ) (Closed access) BACKGROUND: Thyroid hormone affects the coagulation system, but its effect on clinical disease is not clear. We determined the associations of levels of free thyroxine (FT4), thyroid-stimulating hormone (TSH) and anti-thyroid peroxidase antibodies (antiTPO) with levels of coagulation factors and the risk of venous thrombosis. METHODS: In a large population based case-control study (Multiple Environmental and Genetic Assessment of risk factors for venous thrombosis study) on the etiology of venous thrombosis, we determined the levels of FT4, TSH, antiTPO, factor FII, FVII, FVIII, FIX, FX, von Willebrand factor (VWF), antithrombin, protein C, protein S and fibrinogen in 2177 cases and 2826 controls. RESULTS: High levels of FT4 were associated with increased concentrations of procoagulant factors, and not with levels of anticoagulant factors. High levels of FT4 were also associated with the risk of venous thrombosis, up to an odds ratio (OR) of 2.2 (95% confidence interval [CI] 1.0-4.6) for levels above 24.4 pm relative to FT4 levels between 15.5 and 18.9 pm. In 11 cases and one control, clinical hyperthyroidism had been diagnosed within a year of the thrombotic event, leading to an OR of 17.0 (95% CI 2.2-133.0) for thrombosis. The ORs approached unity after adjustment for FVIII and VWF, which suggests that the effect was mediated by these factors. Low TSH levels were also, but less evidently, associated with thrombosis, whereas there was no association between antiTPO and venous thrombosis risk. CONCLUSIONS: High levels of FT4 increase the concentrations of the procoagulant proteins FVIII, FIX, fibrinogen, and VWF, and by this mechanism increase the risk of venous thrombosis. |
| Databáze: | OpenAIRE |
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