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Budnik I, Shenkman B, Morozova O, Einav Y. In-vitro assessment of the effects of fibrinogen, recombinant factor VIIa and factor XIII on trauma-induced coagulopathy. Blood Coagul Fibrinolysis 2021; 31:253-257. [PMID: 32332276 DOI: 10.1097/mbc.0000000000000910] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
: Trauma-induced coagulopathy (TIC) occurs commonly as a second event following severe injury. We evaluated the effects of fibrinogen, recombinant factor VIIa and factor XIII on blood clotting and fibrinolysis in an in-vitro TIC model. The TIC model included hemodilution, hyperfibrinolysis, acidosis and hypothermia. The extent of clot formation and fibrinolysis was evaluated using rotational thromboelastometry. Clot strength was increased following spiking the TIC blood with either 1.0 mg/ml fibrinogen, 3.0 μg/ml recombinant factor VIIa or 2.0 IU/ml factor XIII. Maximal effect was achieved by all agents in combination approximating the extent of clot formation to those in normal blood. Fibrinolysis was inhibited by factor XIII, while the reduction was stronger using all agents together. When each of the agents used in two times lower concentrations, clot strength was near to threshold. Fibrinogen and factor XIII but not factor VIIa exerted stimulation of clot strength, whereas synergistic effect of fibrinogen and factor XIII was observed. Maximal effect was achieved combining all agents. The antifibrinolytic effect was observed only by co-administration of fibrinogen, factor XIII and factor VIIa. On the basis of our study, we suggest that stimulation of clot formation and inhibition of fibrinolysis may be achieved by combination of FG, rFVIIa an FXIII using each of them at minimal effective concentration. Taken into consideration, multifactorial TIC pathogenesis, this approach may be preferable for improving coagulopathy than separate blood spiking with the essayed factors at high concentrations.
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Affiliation(s)
- Ivan Budnik
- Department of Pathophysiology, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Boris Shenkman
- Institute of Thrombosis and Hemostasis, Sheba Medical Center, Tel Hashomer, Israel
| | - Olga Morozova
- Department of Pathophysiology, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Yulia Einav
- Faculty of Engineering, Holon Institute of Technology, Holon, Israel
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2
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Wikkelsø A, Edwards H, Afshari A, Stensballe J, Langhoff-Roos J, Albrechtsen C, Ekelund K, Hanke G, Secher E, Sharif H, Pedersen L, Troelstrup A, Lauenborg J, Mitchell A, Fuhrmann L, Svare J, Madsen M, Bødker B, Møller A, Wikkelsø A, Edwards H, Afshari A, Stensballe J, Langhoff-Roos J, Møller AM, Albrechtsen C, Ekelund K, Hanke G, Sharif HF, Secher EL, Christensen M, Ramsing BU, Jensen-Gadegaard P, Engskov A, Wulff C, Berntsen M, Andersen KJ, Classen V, Opstrup P, Lundstrøm LH, Flindt MS, Lunde J, Pedersen LM, Troelstrup A, Lauenborg J, Lassen B, Andersson M, Winther-Olsen M, Hougaard S, Andersen C, Petersen M, Mitchell A, Fuhrmann L, Svare J, Nielsen CV, Lefort Sønderskov M, Winkel R, Johansen M, Søgaard M, Madsen MG, Bødker B, Okkels C, Berthelsen R, Elisabeth Linnet K, Stendall L, Darfeld I, Madsen M, Pedersen L. Pre-emptive treatment with fibrinogen concentrate for postpartum haemorrhage: randomized controlled trial †. Br J Anaesth 2015; 114:623-33. [DOI: 10.1093/bja/aeu444] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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3
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Plasma fibrinogen level on admission to the intensive care unit is a powerful predictor of postoperative bleeding after cardiac surgery with cardiopulmonary bypass. Thromb Res 2014; 134:360-8. [DOI: 10.1016/j.thromres.2014.05.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 04/23/2014] [Accepted: 05/07/2014] [Indexed: 11/22/2022]
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Mitrophanov AY, Wolberg AS, Reifman J. Kinetic model facilitates analysis of fibrin generation and its modulation by clotting factors: implications for hemostasis-enhancing therapies. MOLECULAR BIOSYSTEMS 2014; 10:2347-57. [PMID: 24958246 PMCID: PMC4128477 DOI: 10.1039/c4mb00263f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Current mechanistic knowledge of protein interactions driving blood coagulation has come largely from experiments with simple synthetic systems, which only partially represent the molecular composition of human blood plasma. Here, we investigate the ability of the suggested molecular mechanisms to account for fibrin generation and degradation kinetics in diverse, physiologically relevant in vitro systems. We represented the protein interaction network responsible for thrombin generation, fibrin formation, and fibrinolysis as a computational kinetic model and benchmarked it against published and newly generated data reflecting diverse experimental conditions. We then applied the model to investigate the ability of fibrinogen and a recently proposed prothrombin complex concentrate composition, PCC-AT (a combination of the clotting factors II, IX, X, and antithrombin), to restore normal thrombin and fibrin generation in diluted plasma. The kinetic model captured essential features of empirically detected effects of prothrombin, fibrinogen, and thrombin-activatable fibrinolysis inhibitor titrations on fibrin formation and degradation kinetics. Moreover, the model qualitatively predicted the impact of tissue factor and tPA/tenecteplase level variations on the fibrin output. In the majority of considered cases, PCC-AT combined with fibrinogen accurately approximated both normal thrombin and fibrin generation in diluted plasma, which could not be accomplished by fibrinogen or PCC-AT acting alone. We conclude that a common network of protein interactions can account for key kinetic features characterizing fibrin accumulation and degradation in human blood plasma under diverse experimental conditions. Combined PCC-AT/fibrinogen supplementation is a promising strategy to reverse the deleterious effects of dilution-induced coagulopathy associated with traumatic bleeding.
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Affiliation(s)
- Alexander Y. Mitrophanov
- DoD Biotechnology High-Performance Computing Software Applications Institute, Telemedicine and Advanced Technology Research Center, U.S. Army Medical Research and Materiel Command, Ft. Detrick, MD 21702
| | - Alisa S. Wolberg
- Department of Pathology and Laboratory Medicine, University of North Carolina School of Medicine, Chapel Hill, NC 27599
| | - Jaques Reifman
- DoD Biotechnology High-Performance Computing Software Applications Institute, Telemedicine and Advanced Technology Research Center, U.S. Army Medical Research and Materiel Command, Ft. Detrick, MD 21702
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Goggs R, Brainard B, de Laforcade AM, Flatland B, Hanel R, McMichael M, Wiinberg B. Partnership on Rotational ViscoElastic Test Standardization (PROVETS): Evidence-based guidelines on rotational viscoelastic assays in veterinary medicine. J Vet Emerg Crit Care (San Antonio) 2014; 24:1-22. [DOI: 10.1111/vec.12144] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 11/15/2013] [Indexed: 11/30/2022]
Affiliation(s)
- Robert Goggs
- From the Department of Clinical Sciences; College of Veterinary Medicine; Cornell University; Ithaca NY 14853
| | - Benjamin Brainard
- Department of Small Animal Medicine & Surgery, College of Veterinary Medicine; University of Georgia; Athens GA 30602
| | - Armelle M. de Laforcade
- Department of Clinical Sciences; Tufts Cummings School of Veterinary Medicine; North Grafton MA 01536
| | - Bente Flatland
- Department of Pathobiology, College of Veterinary Medicine; University of Tennessee; Knoxville TN 37996
| | - Rita Hanel
- Department of Clinical Sciences, College of Veterinary Medicine; NC State University; Raleigh NC 27607
| | - Maureen McMichael
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine; University of Illinois; Urbana IL 61801
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Hvas AM, Andreasen JB, Christiansen K, Ravn HB. Ex-vivo response to blood products and haemostatic agents after paediatric cardiac surgery. Blood Coagul Fibrinolysis 2013; 24:587-92. [DOI: 10.1097/mbc.0b013e32836029d2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Palsson R, Vidarsson B, Gudmundsdottir BR, Larsen OH, Ingerslev J, Sorensen B, Onundarson PT. Complementary effect of fibrinogen and rFVIIa on clottingex vivoin Bernard-Soulier syndrome and combined use during three deliveries. Platelets 2013; 25:357-62. [DOI: 10.3109/09537104.2013.819971] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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8
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Impact of changes in haematocrit level and platelet count on thromboelastometry parameters. Thromb Res 2013; 131:249-53. [DOI: 10.1016/j.thromres.2013.01.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 12/13/2012] [Accepted: 01/02/2013] [Indexed: 11/24/2022]
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Larsen OH, Stentoft J, Radia D, Ingerslev J, Sørensen B. Combination of recombinant factor VIIa and fibrinogen corrects clot formation in primary immune thrombocytopenia at very low platelet counts. Br J Haematol 2012; 160:228-36. [DOI: 10.1111/bjh.12118] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Accepted: 09/12/2012] [Indexed: 11/26/2022]
Affiliation(s)
| | - Jesper Stentoft
- Department of Haematology; Aarhus University Hospital; Aarhus; Denmark
| | - Deepti Radia
- Department of Haematology; Guy's and St Thomas' NHS Foundation Trust; London; UK
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van Geffen M, Loof A, Lap P, Boezeman J, Laros-van Gorkom BAP, Brons P, Verbruggen B, van Kraaij M, van Heerde WL. A novel hemostasis assay for the simultaneous measurement of coagulation and fibrinolysis. ACTA ACUST UNITED AC 2012; 16:327-36. [PMID: 22183066 DOI: 10.1179/102453311x13085644680348] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Thrombin and plasmin are the key enzymes involved in coagulation and fibrinolysis. A novel hemostasis assay (NHA) was developed to measure thrombin and plasmin generation in a single well by a fluorimeter. The NHA uses two fluorescent substrates with non-interfering fluorescent excitation and emission spectra. The assay was tested in vitro using modulators like heparin, hirudin, epsilon-aminocaproic acid, gly-pro-arg-pro peptide and reptilase and validated by measurement of prothrombin fragment 1+2 and plasmin-alpha2-antiplasmin levels. Intra- and inter-assay coefficients of variation were < 9% and 6-25%, respectively. Interplay between coagulation and fibrinolysis was demonstrated by the effect of tissue-type plasminogen activator on thrombin generation and by the different responses of activated protein C and thrombomodulin on fibrinolysis. The last responses showed the linkage between coagulation and fibrinolysis by thrombin activatable fibrinolysis inhibitor. In conclusion, this strategy allows detection of coagulation, fibrinolysis and their interplay in a single assay.
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Affiliation(s)
- Mark van Geffen
- Laboratory of Hematology, Department of Laboratory Medicine, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
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Tang M, Wierup P, Christiansen K, Greisen J, Sørensen B. Theragnostic performance of ex vivo testing of haemostatic intervention and clinical effect of recombinant factor VIIa and fibrinogen concentrate. Thromb Res 2012; 129:e263-5. [DOI: 10.1016/j.thromres.2012.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Revised: 02/21/2012] [Accepted: 03/05/2012] [Indexed: 11/28/2022]
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In-vitro hypocoagulability on whole blood thromboelastometry associated with in-vivo expansion of red cell mass in an equine model. Blood Coagul Fibrinolysis 2011; 22:424-30. [PMID: 21508831 DOI: 10.1097/mbc.0b013e3283464f83] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In several species, there is a strong correlation between indicators of red cell mass (RCM) and thromboelastometry results. The horse has a reliable, temporary, polycythemia in response to phenylephrine infusion. Our objective was to evaluate the effects of an in-vivo increase in circulating RCM on thromboelastometry results in an equine model of transient polycythemia. Six healthy research horses had whole blood thromboelastometry with contact activator and tissue factor initiation after recalcification of citrated samples. Additional samples were frozen for thrombin-antithrombin (TAT). Complete blood count biochemical analysis, fibrinogen, activated partial thromboplastin time (aPTT), and prothrombin time (PT) were performed. Additional samples were taken at 5 min and 2 h after phenylephrine infusion. Thromboelastometry was performed separately on four horses not receiving phenylephrine with the samples divided and spiked with phenylephrine ex vivo. Red cell count (P<0.001) and hematocrit (P<0.001) were significantly higher at 5 min after phenylephrine compared with baseline and 2 h. There was no change in platelet count, fibrinogen, PT, aPTT, or TAT at any time point. Both ex-tem and in-tem parameters were hypocoagulable at 5 min after phenylephrine compared to baseline and 2 h. There was no effect of phenylephrine in the ex-vivo spiking studies on any of the thromboelastometry parameters. Whole blood thromboelastometry results were hypocoagulable in this equine model of in-vivo transient polycythemia only during the polycythemic phase. All other coagulation parameters were unchanged. In the absence of other indicators of hypocoagulability, this may point to an artifact of thromboelastometry. Alternatively, the data may reflect true in-vivo hypocoagulability in patients with increased circulating RCM.
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Pychyńska-Pokorska M, Pągowska-Klimek I, Krajewski W, Moll JJ. Use of Recombinant Activated Factor VII for Controlling Refractory Postoperative Bleeding in Children Undergoing Cardiac Surgery With Cardiopulmonary Bypass. J Cardiothorac Vasc Anesth 2011; 25:987-94. [DOI: 10.1053/j.jvca.2011.05.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Indexed: 02/03/2023]
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Fibrin formation is more impaired than thrombin generation and platelets immediately following cardiac surgery. Thromb Res 2011; 128:277-82. [PMID: 21429567 DOI: 10.1016/j.thromres.2011.02.022] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Revised: 02/13/2011] [Accepted: 02/23/2011] [Indexed: 11/22/2022]
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Thorarinsdottir HR, Sigurbjornsson FT, Hreinsson K, Onundarson PT, Gudbjartsson T, Sigurdsson GH. Effects of fibrinogen concentrate administration during severe hemorrhage. Acta Anaesthesiol Scand 2010; 54:1077-82. [PMID: 20887409 DOI: 10.1111/j.1399-6576.2010.02289.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Fibrinogen concentrate has been shown to improve coagulation in dilutional coagulopathy in experimental studies, but clinical experience is still scarce. The aim of this study was to evaluate laboratory data and the clinical outcome of fibrinogen administration in patients suffering from severe hemorrhage. MATERIALS AND METHODS A retrospective study over a 3-year observation period of consecutive patients who received a single dose of fibrinogen concentrate but not recombinant factor VIIa as part of their treatment of severe hemorrhage, defined as >6 U of packed red blood cells (PRBCs). RESULTS Thirty-seven patients were included, most of them suffering from severe hemorrhage following open heart surgery (68%). After a median fibrinogen dose of 2 g (range 1-6 g), an absolute increase in the plasma fibrinogen concentration of 0.6 g/l was observed (P<0.001). The activated partial thromboplastin time (APTT) decreased significantly (P<0.001), from 52 to 43 s and the prothrombin time (PT) decreased from 20 to 17 s, respectively. The transfusion requirement for PRBCs decreased from 6 to 3 U (P<0.01) in the 24 h after fibrinogen administration, but fresh-frozen plasma and platelet concentrate transfusions did not change significantly. Eight patients (22%) died in intensive care unit and the pre-operative fibrinogen concentration was not significantly different in these patients. CONCLUSION Administration of fibrinogen for severe hemorrhage was associated with an increased fibrinogen concentration and a significant decrease in APTT, PT and the requirement for PRBCs.
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Affiliation(s)
- H R Thorarinsdottir
- Department of Anesthesia and Intensive Care, Landspitali-University Hospital, Reykjavik, Iceland
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Clot formation in canine whole blood as measured by rotational thromboelastometry is influenced by sample handling and coagulation activator. Blood Coagul Fibrinolysis 2010; 21:692-702. [DOI: 10.1097/mbc.0b013e32833e9c47] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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