PMID- 24128780 OWN - NLM STAT- MEDLINE DCOM- 20140812 LR - 20180823 IS - 1499-2752 (Electronic) IS - 0315-162X (Linking) VI - 40 IP - 12 DP - 2013 Dec TI - Patients with antineutrophil cytoplasmic antibodies associated vasculitis in remission are hypercoagulable. PG - 2042-6 LID - 10.3899/jrheum.130200 [doi] AB - OBJECTIVES: The risk of venous thromboembolism (VTE) is increased in patients with antineutrophil cytoplasmic antibodies (ANCA) associated vasculitides (AAV) as compared to healthy subjects. The mechanisms underlying this increased occurrence of VTE are not completely understood. We hypothesize that AAV patients in remission are more procoagulant than healthy controls. METHODS: Patients with AAV in remission and no VTE for the last 6 months were included. Patients with severe renal impairment (serum creatinine > 250 mumol/l) were excluded. Age and sex matched healthy controls were included. The endogenous thrombin potential (ETP) was determined together with hemostatic variables: fibrinogen, D-dimers, factor VIII (FVIII), tissue factor pathway inhibitor (TFPI), protein C, and free protein S. RESULTS: Thirty-one patients were included. In 27 patients not taking anticoagulants, ETP was measured and found to be elevated: 137.1% as compared to a median of 90.0% for healthy controls (p < 0.01). Fibrinogen and D-dimer levels were not elevated in patients (median 3.5 g/l and 279 mug/l, respectively). FVIII and TFPI levels were also significantly increased in patients as compared to healthy controls (159% vs 137%; 122.5% vs 101%, respectively), whereas protein C and free protein S levels were not elevated (126.5% vs 118.6% and 124.6% vs 118.3%, respectively). CONCLUSION: Patients with AAV in remission are more procoagulant than healthy controls, as indicated by an increased ETP. The increased FVIII level measured in these patients suggests persistence of endothelial activation and/or dysfunction. This endothelial dysfunction may cause a continuous low-grade procoagulant state. FAU - Hilhorst, Marc AU - Hilhorst M AD - From the Department of Internal Medicine/Division of Clinical and Experimental Immunology; Department of Internal Medicine/Laboratory for Clinical Thrombosis and Hemostasis, Cardiovascular Research Institute Maastricht, Maastrich University Medical Center; and Department of Biochemistry; Maastricht University Medical Center, Maastricht, The Netherlands. FAU - Winckers, Kristien AU - Winckers K FAU - Wilde, Benjamin AU - Wilde B FAU - van Oerle, Rene AU - van Oerle R FAU - ten Cate, Hugo AU - ten Cate H FAU - Tervaert, Jan Willem Cohen AU - Tervaert JW LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131015 PL - Canada TA - J Rheumatol JT - The Journal of rheumatology JID - 7501984 RN - 0 (Antibodies, Antineutrophil Cytoplasmic) RN - 0 (Fibrin Fibrinogen Degradation Products) RN - 0 (Lipoproteins) RN - 0 (Protein C) RN - 0 (Protein S) RN - 0 (fibrin fragment D) RN - 0 (lipoprotein-associated coagulation inhibitor) RN - 839MOZ74GK (F8 protein, human) RN - 9001-27-8 (Factor VIII) RN - 9001-32-5 (Fibrinogen) RN - EC 3.4.21.5 (Thrombin) SB - IM CIN - J Rheumatol. 2013 Dec;40(12):1935-7. PMID: 24293615 MH - Adult MH - Aged MH - Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/blood/epidemiology/*immunology MH - Antibodies, Antineutrophil Cytoplasmic/blood/*immunology MH - Factor VIII/immunology/metabolism MH - Female MH - Fibrin Fibrinogen Degradation Products/immunology/metabolism MH - Fibrinogen/immunology/metabolism MH - Follow-Up Studies MH - Humans MH - Lipoproteins/immunology/metabolism MH - Male MH - Middle Aged MH - Protein C/immunology/metabolism MH - Protein S/immunology/metabolism MH - Remission Induction MH - Risk Factors MH - Thrombin/immunology/metabolism MH - Thrombophilia/blood/epidemiology/*immunology MH - Venous Thromboembolism/blood/epidemiology/*immunology OTO - NOTNLM OT - ANCA ASSOCIATED VASCULITIS OT - ENDOGENOUS THROMBIN POTENTIAL OT - THROMBOSIS EDAT- 2013/10/17 06:00 MHDA- 2014/08/13 06:00 CRDT- 2013/10/17 06:00 PHST- 2013/10/17 06:00 [entrez] PHST- 2013/10/17 06:00 [pubmed] PHST- 2014/08/13 06:00 [medline] AID - jrheum.130200 [pii] AID - 10.3899/jrheum.130200 [doi] PST - ppublish SO - J Rheumatol. 2013 Dec;40(12):2042-6. doi: 10.3899/jrheum.130200. Epub 2013 Oct 15.