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Tarandovskiy ID, Ovanesov MV. The effect of factor XIa on thrombin and plasmin generation, clot formation, lysis and density in coagulation factors deficiencies. Thromb Res 2024; 233:189-199. [PMID: 38101192 DOI: 10.1016/j.thromres.2023.11.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/21/2023] [Accepted: 11/22/2023] [Indexed: 12/17/2023]
Abstract
INTRODUCTION Growing evidence supports the importance of factor (F) XI activation for thrombosis and hemostasis as well as inflammation and complement systems. In this study, we evaluated the effect of activated FXI (FXIa) on the detection of factor deficiencies by global hemostasis assays of thrombin generation (TG), plasmin generation (PG), and clot formation and lysis (CFL). MATERIALS AND METHODS An absorbance and fluorescence microplate assay was used to simultaneously observe TG, PG, and CFL in FV-, FVII-, FVIII-, and FIX-deficient plasmas supplemented with purified factors. Coagulation was initiated with tissue factor with or without FXIa in the presence of tissue plasminogen activator. Thrombin and plasmin peak heights (TPH and PPH), maximal clot density (MCD), times to clotting (CT), thrombin and plasmin peaks (TPT and PPT) and clot lysis (LyT) and a new parameter, clot lifetime (LiT), were evaluated. RESULTS TG/CFL were elevated by the FXIa at low FV (below 0.1 IU/mL), and at FVIII and FIX above 0.01 IU/mL. FXIa affected PG only at low FV and FVII. At high factor concentrations, FXIa reduced MCD. Thrombin and plasmin substrates had effect on CT, LyT, LiT and MCD parameters. CONCLUSIONS FXIa reveals new relationships between TG, PG and CFL parameters in factor deficiencies suggesting potential benefits for discrimination of bleeding phenotypes.
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Affiliation(s)
- Ivan D Tarandovskiy
- Center of Biologics Evaluation and Research, U.S. Food and Drug Administration, United States of America
| | - Mikhail V Ovanesov
- Center of Biologics Evaluation and Research, U.S. Food and Drug Administration, United States of America.
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2
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Lagrange J, Lacolley P, Wahl D, Peyrin-Biroulet L, Regnault V. Shedding Light on Hemostasis in Patients With Inflammatory Bowel Diseases. Clin Gastroenterol Hepatol 2021; 19:1088-1097.e6. [PMID: 31972287 DOI: 10.1016/j.cgh.2019.12.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 12/19/2019] [Accepted: 12/31/2019] [Indexed: 02/07/2023]
Abstract
Patients with inflammatory bowel diseases (IBD) have an increased risk of thrombosis, possibly due to changes in blood cells and molecules involved in hemostasis. They have increased platelet counts and reactivity as well as increased platelet-derived large extracellular vesicles. Coagulation is continuously activated in patients with IBD, based on measured markers of thrombin generation, and the anticoagulant functions of endothelial cells are damaged. Furthermore, fibrinogen is increased and fibrin clots are denser. However, pathogenesis of thrombosis in patients with IBD appears to differ from that of patients without IBD. Patients with IBD also take drugs that might contribute to risk of thrombosis, complicating the picture. We review the features of homeostasis that are altered in patients with IBD and possible mechanisms of this relationship.
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Affiliation(s)
- Jeremy Lagrange
- INSERM U1116, Faculté de Médecine, Université de Lorraine, Vandœuvre-lès-Nancy, France; Université de Lorraine, Nancy, France; Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany.
| | - Patrick Lacolley
- INSERM U1116, Faculté de Médecine, Université de Lorraine, Vandœuvre-lès-Nancy, France; Université de Lorraine, Nancy, France; Centre Hospitalier Régionale Universitaire de Nancy, Vandœuvre-lès-Nancy, France
| | - Denis Wahl
- INSERM U1116, Faculté de Médecine, Université de Lorraine, Vandœuvre-lès-Nancy, France; Université de Lorraine, Nancy, France; Division of Vascular Medicine, Centre Hospitalier Régionale Universitaire de Nancy, Vandœuvre-lès-Nancy, France
| | - Laurent Peyrin-Biroulet
- Université de Lorraine, Nancy, France; INSERM U1256, Faculté de Médecine, Université de Lorraine, Vandœuvre-lès-Nancy, France; Department of Gastroenterology, Centre Hospitalier Régionale Universitaire de Nancy, Vandœuvre-lès-Nancy, France
| | - Véronique Regnault
- INSERM U1116, Faculté de Médecine, Université de Lorraine, Vandœuvre-lès-Nancy, France; Université de Lorraine, Nancy, France; Centre Hospitalier Régionale Universitaire de Nancy, Vandœuvre-lès-Nancy, France
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3
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Prior S, Butenas S. Letter: in response to a recent article by van der Beelen et al. 1. Thromb Res 2021; 202:104. [PMID: 33798803 DOI: 10.1016/j.thromres.2021.03.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 03/15/2021] [Indexed: 10/21/2022]
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Liang Y, Jackson JW, Woodle SA, Surov SS, Parunov LA, Scott DE, Weinstein M, Lee TK, Ovanesov MV. Detecting factor XIa in immune globulin products: Commutability of international reference materials for traditional and global hemostasis assays. Res Pract Thromb Haemost 2021; 5:211-222. [PMID: 33537546 PMCID: PMC7845073 DOI: 10.1002/rth2.12467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 10/21/2020] [Accepted: 11/03/2020] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Activated coagulation factor XIa (FXIa) is an impurity and primary source of procoagulant activity in thrombosis-implicated immune globulin (IG) products. Several assays, of varying quality and precision are used to assess FXIa-like procoagulant activity in units relevant to their respective principles. OBJECTIVES To advance unified reporting, we sought to employ the World Health Organization reference reagents (RRs) to present the results of differing methodologies in units of FXIa activity and rank the sensitivity and robustness of these methodologies. METHODS RR 11/236 served as a calibrator in several FXIa-sensitive blood coagulation tests: two commercial chromogenic FXIa assays (CAs); a nonactivated partial thromboplastin time (NaPTT); an in-house fibrin generation (FG) assay; an in-house thrombin generation (TG) assay; and an assay for FXIa- and kallikrein-like proteolytic activities based on cleavage of substrate SN13a. Some assays were tested in either normal or FXI-deficient plasma. RESULTS Each method demonstrated a sigmoidal dose-response to RRs. NaPTT was the least sensitive to FXIa and the least precise; our in-house TG was the most sensitive; and the two CAs were the most precise. All methods, except for SN13a, which is less specific for thrombotic impurities, gave comparable (within 20% difference) FXIa activity assignments for IG lots. CONCLUSIONS Purified FXIa reference standards support quantitation of FXIa levels in IG products in all tested assay methodologies. This should help to standardize the measurement of thrombotic potentials in IG products and prevent products exhibiting high procoagulant activity from distribution for patient use. Further research is needed to address the effect of IG product-specific matrixes on assay performance.
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Affiliation(s)
- Yideng Liang
- Center for Biologics Evaluation and ResearchU.S. Food and Drug AdministrationSilver SpringMDUSA
| | - Joseph W. Jackson
- Center for Biologics Evaluation and ResearchU.S. Food and Drug AdministrationSilver SpringMDUSA
| | - Samuel A. Woodle
- Center for Biologics Evaluation and ResearchU.S. Food and Drug AdministrationSilver SpringMDUSA
| | - Stepan S. Surov
- Center for Biologics Evaluation and ResearchU.S. Food and Drug AdministrationSilver SpringMDUSA
| | - Leonid A. Parunov
- Center for Biologics Evaluation and ResearchU.S. Food and Drug AdministrationSilver SpringMDUSA
| | - Dorothy E. Scott
- Center for Biologics Evaluation and ResearchU.S. Food and Drug AdministrationSilver SpringMDUSA
| | - Mark Weinstein
- Center for Biologics Evaluation and ResearchU.S. Food and Drug AdministrationSilver SpringMDUSA
| | - Timothy K. Lee
- Center for Biologics Evaluation and ResearchU.S. Food and Drug AdministrationSilver SpringMDUSA
| | - Mikhail V. Ovanesov
- Center for Biologics Evaluation and ResearchU.S. Food and Drug AdministrationSilver SpringMDUSA
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Andrade AR, da Rocha TRF, Ortiz-Agostinho CL, Nishitokukado I, Carlos AS, de Azevedo MFC, Hashimoto CL, Damião AOMC, Carrilho FJ, D’Amico E, Sipahi AM, de Arruda Leite AZ. Endoscopic activity, tissue factor and Crohn's disease: findings in clinical remission patients. Therap Adv Gastroenterol 2020; 13:1756284820939412. [PMID: 34025780 PMCID: PMC8114167 DOI: 10.1177/1756284820939412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 05/14/2020] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND As Crohn's disease (CD) is associated with a high risk of thromboembolic events (TE), including patients with subclinical inflammation, we aim to evaluate the correlation between the impact of endoscopic activity (EA) in the coagulation profiling of CD patients while in clinical remission. METHODS From 164 consecutive CD patients included in clinical remission [Crohn's disease activity index (CDAI) < 150], 75 were in the EA group [Simplified Endoscopic Score for CD (SES-CD) ⩾ 7], 89 were in the endoscopic remission (ER) group (SES-CD ⩽ 2), and 50 were included as healthy controls in the study. Blood samples were analyzed for tissue factor (TF), factor VIII (FVIII), thrombomodulin (TM), ADAMTS-13, von Willebrand factor (VWF), and endogenous thrombin potential (ETP), as well as collecting data regarding risk factors for TE and CD profile. RESULTS Mean plasma TF activity showed significantly higher levels in the EA group when compared with the ER and control groups (127 pM versus 103 pM versus 84 pM; p = 0.001), although the VWF:Ag (160% versus 168% versus 110%; p = 0.001), VWF/ADAMTS-13 (191 versus 219 versus 138; p = 0.003), FVIII (150% versus 144% versus 90%; p = 0.001) and TM (5.13 ng/ml versus 4.91 ng/mL versus 3.81 ng/ml; p < 0.001) were only increased in CD regardless of EA status when compared with controls. Lastly, ETP with and without TM remained the same in all three groups. CONCLUSIONS CD patients in clinical remission with EA present endothelial lesion inducing TF exposure and subsequent coagulation cascade activation. Recommended thromboprophylaxis for EA outpatient subgroups will require additional investigation in order to be validated.
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Affiliation(s)
- Adriana Ribas Andrade
- Gastroenterology, Laboratório de Gastroenterologia Clínica e Experimental (LIM 07), University of Sao Paulo School of Medicine, Sao Paulo, Brazil,Division of Hematology, Coagulation Laboratory, University of Sao Paulo School of Medicine, Av. Dr. Eneas de Carvalho Aguiar, Sao Paulo, Brazil
| | - Tania Rubia Flores da Rocha
- Gastroenterology, Laboratório de Gastroenterologia Clínica e Experimental (LIM 07), University of Sao Paulo School of Medicine, Sao Paulo, Brazil,Division of Hematology, Coagulation Laboratory, University of Sao Paulo School of Medicine, Av. Dr. Eneas de Carvalho Aguiar, Sao Paulo, Brazil
| | - Carmen Lucia Ortiz-Agostinho
- Gastroenterology, Laboratório de Gastroenterologia Clínica e Experimental (LIM 07), University of Sao Paulo School of Medicine, Sao Paulo, Brazil,Division of Hematology, Coagulation Laboratory, University of Sao Paulo School of Medicine, Av. Dr. Eneas de Carvalho Aguiar, Sao Paulo, Brazil
| | - Iêda Nishitokukado
- Gastroenterology, Laboratório de Gastroenterologia Clínica e Experimental (LIM 07), University of Sao Paulo School of Medicine, Sao Paulo, Brazil,Division of Hematology, Coagulation Laboratory, University of Sao Paulo School of Medicine, Av. Dr. Eneas de Carvalho Aguiar, Sao Paulo, Brazil
| | - Alexandre Sousa Carlos
- Gastroenterology, Laboratório de Gastroenterologia Clínica e Experimental (LIM 07), University of Sao Paulo School of Medicine, Sao Paulo, Brazil,Division of Hematology, Coagulation Laboratory, University of Sao Paulo School of Medicine, Av. Dr. Eneas de Carvalho Aguiar, Sao Paulo, Brazil
| | - Matheus Freitas Cardoso de Azevedo
- Gastroenterology, Laboratório de Gastroenterologia Clínica e Experimental (LIM 07), University of Sao Paulo School of Medicine, Sao Paulo, Brazil,Division of Hematology, Coagulation Laboratory, University of Sao Paulo School of Medicine, Av. Dr. Eneas de Carvalho Aguiar, Sao Paulo, Brazil
| | - Claudio Lioshi Hashimoto
- Gastroenterology, Laboratório de Gastroenterologia Clínica e Experimental (LIM 07), University of Sao Paulo School of Medicine, Sao Paulo, Brazil,Division of Hematology, Coagulation Laboratory, University of Sao Paulo School of Medicine, Av. Dr. Eneas de Carvalho Aguiar, Sao Paulo, Brazil
| | - Aderson Omar Moura Cintra Damião
- Gastroenterology, Laboratório de Gastroenterologia Clínica e Experimental (LIM 07), University of Sao Paulo School of Medicine, Sao Paulo, Brazil,Division of Hematology, Coagulation Laboratory, University of Sao Paulo School of Medicine, Av. Dr. Eneas de Carvalho Aguiar, Sao Paulo, Brazil
| | - Flair José Carrilho
- Gastroenterology, Laboratório de Gastroenterologia Clínica e Experimental (LIM 07), University of Sao Paulo School of Medicine, Sao Paulo, Brazil,Division of Hematology, Coagulation Laboratory, University of Sao Paulo School of Medicine, Av. Dr. Eneas de Carvalho Aguiar, Sao Paulo, Brazil
| | - Elbio D’Amico
- Gastroenterology, Laboratório de Gastroenterologia Clínica e Experimental (LIM 07), University of Sao Paulo School of Medicine, Sao Paulo, Brazil,Division of Hematology, Coagulation Laboratory, University of Sao Paulo School of Medicine, Av. Dr. Eneas de Carvalho Aguiar, Sao Paulo, Brazil
| | - Aytan Miranda Sipahi
- Gastroenterology, Laboratório de Gastroenterologia Clínica e Experimental (LIM 07), University of Sao Paulo School of Medicine, Sao Paulo, Brazil,Division of Hematology, Coagulation Laboratory, University of Sao Paulo School of Medicine, Av. Dr. Eneas de Carvalho Aguiar, Sao Paulo, Brazil
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Prior SM, Park MS, Mann KG, Butenas S. Endogenous Procoagulant Activity in Trauma Patients and Its Relationship to Trauma Severity. TH OPEN 2019; 3:e10-e19. [PMID: 31249976 PMCID: PMC6524897 DOI: 10.1055/s-0038-1677030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 11/27/2018] [Indexed: 12/13/2022] Open
Abstract
Background
It has been observed that trauma patients have elevated plasma procoagulant activity that could be assigned to an elevated concentration of tissue factor (TF). However, in many instances there is a discrepancy between the levels of TF and the procoagulant activity observed. We hypothesized that factor XIa (FXIa) could be responsible for this additional activity and that the presence and levels of both proteins could correlate with trauma severity.
Methods
Citrate plasma from 98 trauma patients (47 blunt, 17 penetrating, and 34 thermal) were evaluated in clotting assays for the presence of FXIa and TF activity using respective inhibitory antibodies.
Results
When the three trauma patient groups were divided into two cohorts (Injury Severity Score [ISS] > 25 and ISS ≤ 25), higher frequencies and concentrations of both TF and FXIa were observed for all the more severe injury subgroups.
Conclusions
The majority of trauma patients have active FXIa in their plasma, with a significant fraction having active TF as well. Additionally, both TF and FXIa frequency and concentration directly relate to trauma severity. These data suggest the use of these two proteins as potential markers for the stratification of trauma patients.
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Affiliation(s)
- Shannon M Prior
- Department of Biochemistry, University of Vermont, Colchester, Vermont, United States
| | - Myung S Park
- Division of Trauma, Critical Care, and General Surgery, Mayo Clinic, Rochester, Minnesota, United States
| | - Kenneth G Mann
- Department of Biochemistry, University of Vermont, Colchester, Vermont, United States
| | - Saulius Butenas
- Department of Biochemistry, University of Vermont, Colchester, Vermont, United States
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7
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Prior SM, Mann KG, Freeman K, Butenas S. Continuous thrombin generation in whole blood: New applications for assessing activators and inhibitors of coagulation. Anal Biochem 2018; 551:19-25. [PMID: 29746819 DOI: 10.1016/j.ab.2018.05.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/14/2018] [Accepted: 05/03/2018] [Indexed: 11/25/2022]
Abstract
Hemostatic tests have been utilized to clarify the blood coagulation potential. The novel thrombin generation (TG) assay of this study provides explicit information and is the most physiologically-relevant hemostatic test ex vivo. We describe how this assay allows for TG under a number of relevant circumstances. First, whole blood (WB) from healthy individuals was analyzed ± 5 pM tissue factor (TF) and ± contact pathway inhibition. Without an exogenous initiator TG was decreased and delayed, but addition of 5 pM TF shortened the lag phase and increased peak thrombin. Additional experiments included fresh WB from a trauma patient analyzed for endogenous activity and TG from healthy donors subjected to TG antagonists which prolonged the lag phase whereas TG agonists consistently shortened the lag phase in a dose dependent manner. Lastly, platelet-poor plasma was reconstituted with packed red blood cells and TG was monitored in the presence and absence of both TF as an activator and PCPS as a phospholipid surface. Our data illustrate the potential that this continuous TG assay has in the evaluation of disorders relevant to blood coagulation and in the monitoring of treatments administered in response to these disorders.
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Affiliation(s)
- Shannon M Prior
- University of Vermont, Department of Biochemistry, 360 South Park Drive, Colchester, VT 05446, USA.
| | - Kenneth G Mann
- University of Vermont, Department of Biochemistry, 360 South Park Drive, Colchester, VT 05446, USA.
| | - Kalev Freeman
- University of Vermont, Department of Surgery, 89 Beaumont Avenue, Burlington, VT 05405, USA.
| | - Saulius Butenas
- University of Vermont, Department of Biochemistry, 360 South Park Drive, Colchester, VT 05446, USA.
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8
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Shupp JW, Prior SM, Jo DY, Moffatt LT, Mann KG, Butenas S. Analysis of factor XIa, factor IXa and tissue factor activity in burn patients. Burns 2017; 44:436-444. [PMID: 29032977 DOI: 10.1016/j.burns.2017.08.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 06/15/2017] [Accepted: 08/08/2017] [Indexed: 12/31/2022]
Abstract
INTRODUCTION An elevated procoagulant activity observed in trauma patients is, in part, related to tissue factor (TF) located on blood cells and microparticles. However, analysis of trauma patient plasma indicates that there are other contributor(s) to the procoagulant activity. We hypothesize that factor (F)XIa and FIXa are responsible for an additional procoagulant activity in burn patients. METHODS Multiple time-point plasma samples from 56 burn patients (total number of samples was 471; up to 20 time-points/patient collected in 3 weeks following admission) were evaluated in a thrombin generation assay using inhibitory antibodies to TF, FIXa and FXIa. RESULTS Due to the limited volume of some samples, not all were analyzed for all three proteins. At admission, 10 of 53 patients (19%) had active TF, 53 of 55 (96%) had FXIa and 48 of 55 (87%) had FIXa in their plasma. 34 patients of 56 enrolled (61%) showed TF activity at one or more time-points. All patients had FXIa and 96% had FIXa at one or more time-points. Overall, TF was observed in 99 of 455 samples analyzed (22%), FXIa in 424 of 471 (90%) and FIXa in 244 of 471 (52%). The concentration of TF was relatively low and varied between 0 and 2.1pM, whereas that of FXIa was higher, exceeding 100pM in some samples. The majority of samples with FIXa had it at sub-nanomolar concentrations. No TF, FXIa and FIXa activity was detected in plasma from healthy individuals. CONCLUSIONS For the first time reported, the majority of plasma samples from burn patients have active FXIa and FIXa, with a significant fraction of them having active TF. The concentration of all three proteins varies in a wide range.
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Affiliation(s)
- Jeffrey W Shupp
- Department of Surgery, MedStar Washington Hospital Center, Washington, DC, United States.
| | - Shannon M Prior
- University of Vermont, Department of Biochemistry, Burlington, VT, United States.
| | - Daniel Y Jo
- Department of Surgery, MedStar Washington Hospital Center, Washington, DC, United States.
| | - Lauren T Moffatt
- Department of Surgery, MedStar Washington Hospital Center, Washington, DC, United States.
| | - Kenneth G Mann
- Haematologic Technologies, Inc., Essex Junction, VT, United States.
| | - Saulius Butenas
- University of Vermont, Department of Biochemistry, Burlington, VT, United States.
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Leiderman K, Chang WC, Ovanesov M, Fogelson AL. Synergy Between Tissue Factor and Exogenous Factor XIa in Initiating Coagulation. Arterioscler Thromb Vasc Biol 2016; 36:2334-2345. [PMID: 27789475 PMCID: PMC5167573 DOI: 10.1161/atvbaha.116.308186] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 10/11/2016] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Recent evidence suggests involvement of coagulation factor XIa (FXIa) in thrombotic event development. This study was conducted to explore possible synergies between tissue factor (TF) and exogenous FXIa (E-FXIa) in thrombin generation. APPROACH AND RESULTS In thrombin generation assays, for increasing concentrations of E-FXIa with low, but not with high TF concentrations, peak thrombin significantly increased whereas lag time and time to peak significantly decreased. Similar dependencies of lag times and rates of thrombin generation were found in mathematical model simulations. In both in vitro and in silico experiments that included E-FXIa, thrombin bursts were seen for TF levels much lower than those required without E-FXIa. For in silico thrombin bursts initiated by the synergistic action of TF and E-FXIa, the mechanisms leading to the burst differed substantially from those for bursts initiated by high TF alone. For the synergistic case, sustained activation of platelet-bound FIX by E-FXIa, along with the feedback-enhanced activation of platelet-bound FVIIIa and FXa, was needed to elicit a thrombin burst. Furthermore, the initiation of thrombin bursts by high TF levels relied on different platelet FIX/FIXa binding sites than those involved in bursts initiated by low TF levels with E-FXIa. CONCLUSIONS Low concentrations of TF and exogenous FXIa, each too low to elicit a burst in thrombin production alone, act synergistically when in combination to cause substantial thrombin production. The observation about FIX/FIXa binding sites may have therapeutic implications.
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Affiliation(s)
- Karin Leiderman
- From the Department of Applied Mathematics and Statistics, Colorado School of Mines, Golden (K.L.); Office of Blood Research and Review, Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, MD (W.C.C., M.O.); and Departments of Mathematics and Bioengineering, University of Utah, Salt Lake City (A.L.F.)
| | - William C Chang
- From the Department of Applied Mathematics and Statistics, Colorado School of Mines, Golden (K.L.); Office of Blood Research and Review, Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, MD (W.C.C., M.O.); and Departments of Mathematics and Bioengineering, University of Utah, Salt Lake City (A.L.F.)
| | - Mikhail Ovanesov
- From the Department of Applied Mathematics and Statistics, Colorado School of Mines, Golden (K.L.); Office of Blood Research and Review, Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, MD (W.C.C., M.O.); and Departments of Mathematics and Bioengineering, University of Utah, Salt Lake City (A.L.F.)
| | - Aaron L Fogelson
- From the Department of Applied Mathematics and Statistics, Colorado School of Mines, Golden (K.L.); Office of Blood Research and Review, Center for Biologics Evaluation and Research, US Food and Drug Administration, Silver Spring, MD (W.C.C., M.O.); and Departments of Mathematics and Bioengineering, University of Utah, Salt Lake City (A.L.F.).
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10
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He Z, Si Y, Jiang T, Ma R, Zhang Y, Cao M, Li T, Yao Z, Zhao L, Fang S, Yu B, Dong Z, Thatte HS, Bi Y, Kou J, Yang S, Piao D, Hao L, Zhou J, Shi J. Phosphotidylserine exposure and neutrophil extracellular traps enhance procoagulant activity in patients with inflammatory bowel disease. Thromb Haemost 2015; 115:738-51. [PMID: 26660948 DOI: 10.1160/th15-09-0710] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 11/08/2015] [Indexed: 12/28/2022]
Abstract
Inflammatory bowel disease (IBD)-associated thromboembolic event often lacks precise aetiology. The aim of this study was to investigate the contribution of phosphatidylserine (PS) exposure and neutrophil extracellular traps (NETs) towards the hypercoagulable state in IBD. We demonstrated that the levels of PS exposed MPs and the sources of MP-origin, platelets, erythrocytes, leukocytes and cultured endothelial cells (ECs) were higher in IBD groups than in healthy controls using flow cytometry and confocal microscopy. Wright-Giemsa and immunofluorescence staining demonstrated that the elevated NETs were released by activated IBD neutrophils or by control neutrophils treated with IBD sera obtained from patients with the active disease. MPs and MP-origin cells in IBD groups, especially in active stage, markedly shortened coagulation time and had increased levels of fibrin, thrombin and FXa production as assessed by coagulation function assays. Importantly, we found that on stimulated ECs, PS rich membranes provided binding sites for FXa and FVa, promoting fibrin formation while TNF blockage or IgG depletion attenuated this effect. Treatment of control neutrophils with TNF and isolated IgG from PR3-ANCA-positive active IBD patients also resulted in the release of NETs. Blockade of PS with lactadherin prolonged coagulation time, decreased fibrin formation to control levels, and inhibited the procoagulant enzymes production in the MPs and MP-origin cells. NET cleavage by DNase I partly decreased PCA in IBD or stimulated neutrophils. Our study reveals a previously unrecognised link between hypercoagulable state and PS exposure or NETs, and may further explain the epidemiological association of thrombosis within IBD patients.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Jialan Shi
- Jialan Shi, MD, PhD, or Jin Zhou, MD, PhD, or Lirong Hao, MD, PhD, Department of Medicine, or Daxun Piao, MD, PhD, Department of General Surgery, First Hospital, Harbin Medical University, 23 Youzheng Street, Nangang District, Harbin 150001, China, E-mail:
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Abstract
Trauma-induced coagulopathy (TIC) includes heterogeneous coagulopathic syndromes with different underlying causes, and treatment is challenged by limited diagnostic tests to discriminate between these entities in the acute setting. We provide an overview of progress in understanding the mechanisms of TIC and the context for several of the hypotheses that will be tested in 'TACTIC'. Although connected to ongoing clinical trials in trauma, TACTIC itself has no intent to conduct clinical trials. We do anticipate that 'early translation' of promising results will occur. Functions anticipated at this early translational level include: (i) basic science groundwork for future therapeutic candidates; (ii) development of acute coagulopathy scoring systems; (iii) coagulation factor composition-based computational analysis; (iv) characterization of novel analytes including tissue factor, polyphosphates, histones, meizothrombin and α-thrombin-antithrombin complexes, factor XIa, platelet and endothelial markers of activation, signatures of protein C activation and fibrinolysis markers; and (v) assessment of viscoelastic tests and new point-of-care methods.
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Affiliation(s)
- K G Mann
- Department of Biochemistry, University of Vermont, Colchester, VT, USA
| | - K Freeman
- Department of Surgery, University of Vermont, Burlington, VT, USA
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12
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Butenas S, Mann KG. The effect of corn trypsin inhibitor and inhibiting antibodies for FXIa and FXIIa on coagulation of plasma and whole blood: comment. J Thromb Haemost 2015; 13:487-8. [PMID: 25523109 PMCID: PMC4348199 DOI: 10.1111/jth.12812] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 12/04/2014] [Indexed: 11/30/2022]
Affiliation(s)
- S Butenas
- Department of Biochemistry, University of Vermont, Colchester, VT, USA
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Owczarek D, Cibor D, Głowacki MK, Rodacki T, Mach T. Inflammatory bowel disease: epidemiology, pathology and risk factors for hypercoagulability. World J Gastroenterol 2014; 20:53-63. [PMID: 24415858 PMCID: PMC3886032 DOI: 10.3748/wjg.v20.i1.53] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 11/19/2013] [Accepted: 12/05/2013] [Indexed: 02/06/2023] Open
Abstract
Hypercoagulability observed in patients with inflammatory bowel diseases (IBD) may lead to thromboembolic events (TE), which affect the venous and arterial systems alike and are an important factor in patients' morbidity and mortality. The risk of TE in IBD patients has been demonstrated to be approximately three-fold higher as compared to the general population. The pathogenesis of thrombosis in IBD patients is multifactorial and not fully explained. The most commonly listed factors include genetic and immune abnormalities, disequilibrium between procoagulant and anticoagulant factors, although recently, the role of endothelial damage as an IBD-triggering factor is underlined. Several studies report that the levels of some coagulation enzymes, including fibrinogen, factors V, VII, VIII, active factor XI, tissue factor, prothrombin fragment 1 + 2 and the thrombin-antithrombin complex, are altered in IBD patients. It has been demonstrated that there is a significant decrease of tissue plasminogen activator level, a marked increase of plasminogen activator inhibitor type 1 and thrombin-activable fibrinolysis inhibitor, a significantly lower level of antithrombin III and tissue factor pathway inhibitor. IBD patients have been also observed to produce an increased amount of various anticoagulant antibodies. Hyperhomocysteinemia, which is a potential risk factor for TE was also observed in some IBD patients. Further studies are necessary to assess the role of coagulation abnormalities in IBD etiology and to determine indications for thromboprophylactic treatment in patients at high risk of developing TE.
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Owczarek D, Cibor D, Sałapa K, Głowacki MK, Mach T, Undas A. Reduced plasma fibrin clot permeability and susceptibility to lysis in patients with inflammatory bowel disease: a novel prothrombotic mechanism. Inflamm Bowel Dis 2013; 19:2616-24. [PMID: 24108112 DOI: 10.1097/01.mib.0000437041.59208.44] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Inflammatory bowel disease (IBD) is associated with an increased risk of thromboembolism. Its mechanism is still unclear. Altered fibrin clot properties have been reported in patients with thromboembolism and those with chronic inflammatory states. We investigated whether fibrin characteristics are abnormal in IBD. METHODS Ex vivo plasma fibrin clot permeability (Ks), compaction, turbidity, and efficiency of fibrinolysis were assessed in 85 consecutive patients with IBD, including 47 with ulcerative colitis (UC) and 38 with Crohn's disease (CD), all with no history of thromboembolism. Forty-eight patients matched for age and sex served as controls. RESULTS Compared with controls, patients with UC and CD had 29.5% and 35.7% lower Ks associated with 13.8% and 23.1% lower compaction, respectively (all P < 0.001). Patients with UC and CD had higher maximum clot absorbance (+8.9%, P = 0.008, and +15.2%, P < 0.0001, respectively), higher maximum D-dimer released from clots (D-D(max), +27.0%, P = 0.01, and +28.7%, P < 0.0001, respectively), and prolonged clot lysis time (+19.0%, P < 0.0001, and +25.5%, P < 0.0001, respectively). Lag phase was similar in both group of patients. D-D(max) was the only parameter that differed between patients in the UC and CD groups, being higher in CD (P = 0.04). The multiple linear regression model showed that in patients with UC, but not with CD, Ks, compaction, lysis time, and D-D(max) were all independently associated with disease activity. In patients with CD, Ks and lysis time were independently predicted by fibrinogen and C-reactive protein. CONCLUSIONS Both UC and CD are characterized by formation of dense fibrin networks relatively resistant to lysis. Prothrombotic clot phenotype might represent a novel mechanism increasing thrombotic risk in IBD.
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Affiliation(s)
- Danuta Owczarek
- *Department of Gastroenterology, Hepatology and Infectious Diseases, Jagiellonian University Medical College, Kraków, Poland; †Department of Bioinformatics and Telemedicine, Jagiellonian University Medical College, Kraków, Poland; and ‡Institute of Cardiology, Jagiellonian University Medical College, and John Paul II Hospital, Kraków, Poland
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Jankowski M, Undas A, Kaczmarek P, Butenas S. Activated factor XI and tissue factor in chronic obstructive pulmonary disease: links with inflammation and thrombin generation. Thromb Res 2011; 127:242-6. [PMID: 21236471 PMCID: PMC3042502 DOI: 10.1016/j.thromres.2010.11.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2010] [Revised: 10/01/2010] [Accepted: 11/02/2010] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Increased cardiovascular mortality and risk of venous thromboembolism are serious extra-pulmonary complications of chronic obstructive pulmonary disease (COPD). Previously, circulating active tissue factor (TF) and factor XIa (FXIa) have been reported to be associated with acute coronary syndromes. OBJECTIVE To measure plasma FXIa and active TF, prothrombin fragment 1.2 (F1.2), and markers of systemic inflammation (C-reactive protein [CRP], interleukin-6 [IL-6], tumor necrosis factor α [TNFα] and matrix metalloproteinase 9 [MMP-9]) in 60 patients with documented stable COPD free of previous thromboembolic events. METHODS In-house clotting assays using inhibitory monoclonal antibodies against FXIa and TF. RESULTS FXIa was detected in 9 (15%) and TF activity in 7 (11.7%) COPD patients. Subjects positive for FXIa and/or TF (n=10; 16.7%) had higher F1.2 (median [interquartile range], 398 [216] vs 192 [42] pM, p<0.000001), fibrinogen (5.58 [2.01] vs 3.97 [2.47] g/L, p=0.0007), CRP (14.75 [1.20] vs 1.88 [2.95] mg/L, p<0.000001), IL-6 (8.14 [4.74] vs 2.45 [2.24] pg/mL, p=0.00002), and right ventricular systolic pressure (47 [15] vs 38 [12] mmHg, p=0.023), and lower vital capacity (66 [15] vs 80 [17] % predicted, p=0.04) than COPD patients without detectable FXIa and TF. COPD severity was not associated with the presence of circulating FXIa and active TF. CONCLUSIONS This is the first study to show that active FXIa and TF are present in stable COPD patients, who exhibit enhanced systemic inflammation and thrombin generation. Our findings suggest a new prothrombotic mechanism which might contribute to elevated risk of thromboembolic complications in COPD.
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Affiliation(s)
- Milosz Jankowski
- Department of Medicine, Jagiellonian University School of Medicine, Krakow, Poland
| | - Anetta Undas
- Department of Medicine, Jagiellonian University School of Medicine, Krakow, Poland
- Institute of Cardiology, Jagiellonian University School of Medicine, Krakow, Poland
| | - Przemyslaw Kaczmarek
- Department of Medicine, Jagiellonian University School of Medicine, Krakow, Poland
| | - Saulius Butenas
- Department of Biochemistry, University of Vermont, Burlington, VT, USA
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