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Tang N, Yuan P, Luo M, Li D. Prolonged coagulation times in severe fever with thrombocytopenia syndrome virus infection, the indicators of heparin-like effect and increased haemorrhagic risk. Br J Haematol 2024; 204:1999-2006. [PMID: 38438264 DOI: 10.1111/bjh.19364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 02/12/2024] [Accepted: 02/15/2024] [Indexed: 03/06/2024]
Abstract
Prolonged coagulation times, such as activated partial thromboplastin time (APTT) and thrombin time (TT), are common in patients infected with severe fever with thrombocytopenia syndrome virus (SFTSV) and have been confirmed to be related to patient's poor outcome by previous studies. To find out the reason for prolonged coagulation time in patients with SFTSV infection, and whether it predicts haemorrhagic risk or not. Seventy-eight consecutive patients with confirmed SFTSV infection were enrolled in this prospective, single-centre, observational study. Several global and specific coagulation parameters of these patients on admission were detected, and the haemorrhagic events during hospitalization and their outcomes were recorded. Most of the enrolled patients had prolonged APTT (82.1%) and TT (80.8%), normal prothrombin time (83.3%) and intrinsic coagulation factors above haemostatic levels (97.4%). The heparin-like effect was confirmed by a protamine neutralization test and anti-Xa activity detection in most patients. Interestingly, the APTT and TT results were significantly positively correlated with the levels of endothelial markers and viral load, respectively. The APTT was independently associated with the haemorrhage of patients. The prolonged APTT and TT of SFTS patients may mainly be attributed to endogenous heparinoids and are associated with increased haemorrhagic risk.
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Affiliation(s)
- Ning Tang
- Department of Clinical Laboratory, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Peihong Yuan
- Department of Clinical Laboratory, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ming Luo
- Department of Clinical Laboratory, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Dengju Li
- Department of Hematology, Tongji Medical College, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Hardy M, Cabo J, Deliège A, Douxfils J, Gouin-Thibault I, Lecompte T, Mullier F. Reassessment of dextran sulfate in anti-Xa assay for unfractionated heparin laboratory monitoring. Res Pract Thromb Haemost 2023; 7:102257. [PMID: 38193053 PMCID: PMC10772882 DOI: 10.1016/j.rpth.2023.102257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/20/2023] [Accepted: 10/18/2023] [Indexed: 01/10/2024] Open
Abstract
Background Anti-Xa assays are used for unfractionated heparin (UFH) monitoring. Dextran sulfate (DS) is used in some assays to overcome the artifactual preanalytical release of platelet factor 4. However, the practical implications of this test modification have not been studied extensively. Objectives To investigate the impact of the presence of DS in the anti-Xa assay for UFH laboratory monitoring. Methods We studied factor Xa inhibition, using an assay without DS (Stago Liquid Anti-Xa), in normal pool plasma spiked with various concentrations of UFH (up to 1 IU/mL) in the presence of increasing concentrations of DS (up to 2560 μg/mL). We also investigated the effect of DS on FXa inhibition measured after the addition of UFH and heparin antagonists (protamine and Polybrene; Sigma Aldrich). Eventually, we compared the anti-Xa levels measured using the assay without DS to those measured with an assay containing DS (BIOPHEN Heparin LRT, Hyphen BioMed). Results DS per se had a detectable anti-Xa effect. FXa inhibition in UFH-spiked plasma linearly increased with increasing concentrations of added DS, with a plateau at approximately 160 μg/mL DS, at which the apparent anti-Xa level had almost doubled. In the presence of heparin antagonists, the addition of DS increased anti-Xa levels, corresponding to the dissociation of the UFH-antagonists complexes in vitro. With the anti-Xa assay containing DS, UFH inhibition was not detected. Conclusion In the presence of high concentrations of DS, FXa inhibition was much higher than that predicted from added UFH amounts, presumably related to the greater availability of UFH for interaction with antithrombin. While the relevance of measuring this "masked" heparin has not been demonstrated, the presence of DS renders the result inaccurate in the presence of protamine or Polybrene.
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Affiliation(s)
- Michael Hardy
- CHU UCL Namur, Namur Thrombosis and Hemostasis Center, Namur Research Institute for Life Sciences, Hematology Laboratory, Yvoir, Belgium
- CHU UCL Namur, Namur Thrombosis and Hemostasis Center, Namur Research Institute for Life Sciences, Department of Anesthesiology, Yvoir, Belgium
- Université catholique de Louvain, Institut de Recherche Expérimentale et Clinique, Pôle Mont, Yvoir, Belgium
| | - Julien Cabo
- CHU UCL Namur, Namur Thrombosis and Hemostasis Center, Namur Research Institute for Life Sciences, Hematology Laboratory, Yvoir, Belgium
| | - Antoine Deliège
- CHU UCL Namur, Namur Thrombosis and Hemostasis Center, Namur Research Institute for Life Sciences, Hematology Laboratory, Yvoir, Belgium
| | - Jonathan Douxfils
- University of Namur, Department of Pharmacy, Namur Thrombosis and Hemostasis Center, Namur Research Institute for Life Sciences, Namur, Belgium
- QUALIblood s.a., Namur, Belgium
| | | | - Thomas Lecompte
- University of Namur, Department of Pharmacy, Namur Thrombosis and Hemostasis Center, Namur Research Institute for Life Sciences, Namur, Belgium
- CHU of Rennes, Department of Laboratory Hematology, IRSET-INSERM-1085, Rennes, France
- University of Lorraine, CHRU of Nancy, Nancy, France
| | - François Mullier
- CHU UCL Namur, Namur Thrombosis and Hemostasis Center, Namur Research Institute for Life Sciences, Hematology Laboratory, Yvoir, Belgium
- Université catholique de Louvain, Institut de Recherche Expérimentale et Clinique, Pôle Mont, Yvoir, Belgium
- University of Namur, Department of Pharmacy, Namur Thrombosis and Hemostasis Center, Namur Research Institute for Life Sciences, Namur, Belgium
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Frackiewicz A, Kalaska B, Miklosz J, Mogielnicki A. The methods for removal of direct oral anticoagulants and heparins to improve the monitoring of hemostasis: a narrative literature review. Thromb J 2023; 21:58. [PMID: 37208753 DOI: 10.1186/s12959-023-00501-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 05/10/2023] [Indexed: 05/21/2023] Open
Abstract
The assessment of hemostasis is necessary to make suitable decisions on the management of patients with thrombotic disorders. In some clinical situations, for example, during thrombophilia screening, the presence of anticoagulants in sample makes diagnosis impossible. Various elimination methods may overcome anticoagulant interference. DOAC-Stop, DOAC-Remove and DOAC Filter are available methods to remove direct oral anticoagulants in diagnostic tests, although there are still reports on their incomplete efficacy in several assays. The new antidotes for direct oral anticoagulants - idarucizumab and andexanet alfa - could be potentially useful, but have their drawbacks. The necessity to remove heparins is also arising as heparin contamination from central venous catheter or therapy with heparin disturbs the appropriate hemostasis assessment. Heparinase and polybrene are already present in commercial reagents but a fully-effective neutralizer is still a challenge for researchers, thus promising candidates remain in the research phase.
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Affiliation(s)
| | - Bartlomiej Kalaska
- Department of Pharmacodynamics, Medical University of Bialystok, Bialystok, Poland.
| | - Joanna Miklosz
- Department of Pharmacodynamics, Medical University of Bialystok, Bialystok, Poland
| | - Andrzej Mogielnicki
- Department of Pharmacodynamics, Medical University of Bialystok, Bialystok, Poland
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Jakimczuk A, Kalaska B, Kamiński K, Miklosz J, Yusa SI, Pawlak D, Szczubiałka K, Mogielnicki A. Monitoring of Anticoagulant Activity of Dabigatran and Rivaroxaban in the Presence of Heparins. J Clin Med 2022; 11:jcm11082236. [PMID: 35456329 PMCID: PMC9028841 DOI: 10.3390/jcm11082236] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 04/12/2022] [Accepted: 04/15/2022] [Indexed: 02/01/2023] Open
Abstract
The routine monitoring of direct oral anticoagulants (DOACs) may be considered in patients with renal impairment, patients who are heavily obese, or patients requiring elective surgery. Using the heparin-binding copolymer (HBC) and polybrene, we aimed to develop a solution for monitoring the anticoagulant activity of DOACs in human plasma in the interfering presence of unfractionated heparin (UFH) and enoxaparin. The thrombin time (TT) and anti-factor Xa activity were monitored in pooled plasma from healthy volunteers. In these tests, plasma with dabigatran or rivaroxaban was mixed with UFH or enoxaparin and then incubated with HBC or polybrene, respectively. HBC and polybrene neutralized heparins and enabled monitoring of anticoagulant activity of dabigatran in the TT test. Both agents allowed for accurate measurement of anti-factor Xa activity in the plasma containing rivaroxaban and heparins in the concentration range reached in patients’ blood. Here, we present diagnostic tools that may improve the control of anticoagulation by eliminating the contamination of blood samples with heparins and enabling the monitoring of DOACs’ activity.
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Affiliation(s)
- Aleksandra Jakimczuk
- Department of Pharmacodynamics, Medical University of Bialystok, 15-089 Bialystok, Poland; (A.J.); (J.M.); (D.P.); (A.M.)
| | - Bartlomiej Kalaska
- Department of Pharmacodynamics, Medical University of Bialystok, 15-089 Bialystok, Poland; (A.J.); (J.M.); (D.P.); (A.M.)
- Correspondence: (B.K.); (K.K.); Tel.: +48-85-748-5660 (B.K.); +48-660589819 (K.K.)
| | - Kamil Kamiński
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland;
- Correspondence: (B.K.); (K.K.); Tel.: +48-85-748-5660 (B.K.); +48-660589819 (K.K.)
| | - Joanna Miklosz
- Department of Pharmacodynamics, Medical University of Bialystok, 15-089 Bialystok, Poland; (A.J.); (J.M.); (D.P.); (A.M.)
| | - Shin-Ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, Himeji 671-2280, Japan;
| | - Dariusz Pawlak
- Department of Pharmacodynamics, Medical University of Bialystok, 15-089 Bialystok, Poland; (A.J.); (J.M.); (D.P.); (A.M.)
| | - Krzysztof Szczubiałka
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland;
| | - Andrzej Mogielnicki
- Department of Pharmacodynamics, Medical University of Bialystok, 15-089 Bialystok, Poland; (A.J.); (J.M.); (D.P.); (A.M.)
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Hardy M, Douxfils J, Morimont L, Didembourg M, Carlo A, de Maistre E, Lecompte T, Mullier F. Study of in vitro thrombin generation after neutralization of heparin. Int J Lab Hematol 2021; 44:168-176. [PMID: 34582127 DOI: 10.1111/ijlh.13703] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 09/01/2021] [Accepted: 09/03/2021] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Thrombin generation (TG) documents hypercoagulability. TG in platelet-poor plasma is exquisitely sensitive to heparins, which thus must be neutralized before testing. Heparinase and hexadimethrine bromide (polybrene) have been used for that purpose, but their effects per se on TG have been poorly studied so far. METHODS (i) TG was studied in commercial normal pooled plasma (NPP; CryoCheck® , Cryopep) in absence or presence of neutralizing agents. (ii) NPP was spiked with increasing concentrations of unfractionated heparin (UFH; up to 1.0 IU/mL) or low-molecular-weight heparin (LMWH; enoxaparin up to 1.2 IU/mL) and TG studied after incubation of heparinase (Hepzyme® ; 15 minutes) or polybrene (0.025 mg/mL; 10 minutes). RESULTS (i) With ThromboScreen reagent to initiate TG, addition of heparinase was associated with increased peak, whereas polybrene caused lengthening of lag time and time to peak, compared with nonsupplemented NPP. (ii) With polybrene, TG was completely restored over the whole range of UFH and LMWH studied. By contrast, heparinase failed to fully restore TG in presence of UFH concentrations ≥0.8 IU/mL or LMWH concentrations ≥1.0 IU/mL. Those effects were matched with detectable tiny residual amounts of non-neutralized heparin (as assessed with an anti-Xa assay) and were less pronounced with a higher picomolar concentration of tissue factor (DrugScreen reagent). CONCLUSION Polybrene fully restored TG of heparinized plasma at the expense of an alteration of TG, pointing to the need to use adapted reference ranges. Heparinase failed to do so in presence of high concentrations of both heparins.
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Affiliation(s)
- Michael Hardy
- Université catholique de Louvain, CHU UCL Namur, Namur Thrombosis and Hemostasis Center (NTHC), Hematology Laboratory, Yvoir, Belgium.,Université catholique de Louvain, CHU UCL Namur, Namur Thrombosis and Hemostasis Center (NTHC), Anesthesiology Department, Yvoir, Belgium
| | - Jonathan Douxfils
- Pharmacy Department, Namur Thrombosis and Hemostasis Center (NTHC), University of Namur, Namur, Belgium.,Qualiblood s.a., Namur, Belgium
| | - Laure Morimont
- Pharmacy Department, Namur Thrombosis and Hemostasis Center (NTHC), University of Namur, Namur, Belgium.,Qualiblood s.a., Namur, Belgium
| | - Marie Didembourg
- Pharmacy Department, Namur Thrombosis and Hemostasis Center (NTHC), University of Namur, Namur, Belgium
| | | | | | - Thomas Lecompte
- Division of Angiology and Hemostasis - Geneva Platelet Group, Departements of Medecine, Université de Genève et Hôpitaux Universitaires de Genève, Geneva, Switzerland
| | - François Mullier
- Université catholique de Louvain, CHU UCL Namur, Namur Thrombosis and Hemostasis Center (NTHC), Hematology Laboratory, Yvoir, Belgium
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Moynihan K, Johnson K, Straney L, Stocker C, Anderson B, Venugopal P, Roy J. Coagulation monitoring correlation with heparin dose in pediatric extracorporeal life support. Perfusion 2017; 32:675-685. [DOI: 10.1177/0267659117720494] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objectives: Extracorporeal Life Support (ECLS) risks thrombotic and hemorrhagic complications. Optimal anti-coagulation monitoring is controversial. We compared coagulation tests evaluating the heparin effect in pediatric ECLS. Methods: A retrospective study of children (<18yrs) undergoing ECLS over 12 months in a tertiary pediatric intensive care unit (PICU). Variables included anti-Factor Xa activity (anti-Xa), activated partial thromboplastin time (aPTT), activated clotting time (ACT) and thromboelastogram (TEG®6s) parameters: ratio and delta reaction (R) times (the ratio and difference, respectively, between R times in kaolin assays with and without heparinase). Test results were correlated with unfractionated heparin infusion rate (IU/kg/hr) at the time of sampling. Mean test results of each ECLS run were evaluated according to the presence/absence of complications. Results: Thirty-two ECLS runs (31 patients) generated 695 data-points for correlation. PICU mortality was 22% and the thrombotic complication rate was 66%. The proportion of variation in coagulation test results explained by heparin dose was 13.3% for anti-Xa, 11.9% for ratio R time, and 9.9% for delta R time, compared with <1% for ACT and aPTT. Incorporating individual variation, age and antithrombin activity in a model with heparin dose explained less than 50% of the variation in test results. Correlation varied according to age, day of ECLS run and between individuals, with parallel dose-response lines noted between patients. Significantly lower mean anti-Xa was observed in PICU non-survivors and runs with thrombosis. Conclusion: Lower anti-Xa was observed in ECLS runs with complications. Although absolute results from anti-Xa and TEG6®s showed the best correlation with heparin dose, a large proportion of variation in results was unexplained by heparin, while dose response was similar between individuals. Population pharmacokinetic/pharmacodynamic modelling is required, as well as prospective trials to delineate the superior means of adjusting heparin therapy to prevent adverse clinical outcomes.
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Affiliation(s)
- Katie Moynihan
- Pediatric Intensive Care Unit, Lady Cilento Children’s Hospital (LCCH), Brisbane, Australia
- Pediatric Critical Care Research Group, LCCH, Brisbane, Australia
- University of Queensland School of Medicine, Brisbane, Australia
| | - Kerry Johnson
- Pediatric Intensive Care Unit, Lady Cilento Children’s Hospital (LCCH), Brisbane, Australia
| | - Lahn Straney
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
| | - Christian Stocker
- Pediatric Intensive Care Unit, Lady Cilento Children’s Hospital (LCCH), Brisbane, Australia
- Pediatric Critical Care Research Group, LCCH, Brisbane, Australia
- University of Queensland School of Medicine, Brisbane, Australia
- Queensland Neonatal & Pediatric ECLS Service, LCCH, Brisbane, Australia
| | - Ben Anderson
- Queensland Neonatal & Pediatric ECLS Service, LCCH, Brisbane, Australia
| | - Prem Venugopal
- Queensland Neonatal & Pediatric ECLS Service, LCCH, Brisbane, Australia
| | - John Roy
- University of Queensland School of Medicine, Brisbane, Australia
- Pathology Queensland, Brisbane, Australia
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Tabassum R, Gupta BD. Simultaneous estimation of vitamin K1 and heparin with low limit of detection using cascaded channels fiber optic surface plasmon resonance. Biosens Bioelectron 2016; 86:48-55. [DOI: 10.1016/j.bios.2016.06.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 06/09/2016] [Accepted: 06/10/2016] [Indexed: 01/09/2023]
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Zhang Z, Miao Y, Zhang Q, Lian L, Yan G. Selective room temperature phosphorescence detection of heparin based on manganese-doped zinc sulfide quantum dots/polybrene self-assembled nanosensor. Biosens Bioelectron 2015; 68:556-562. [DOI: 10.1016/j.bios.2015.01.053] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Revised: 01/21/2015] [Accepted: 01/22/2015] [Indexed: 01/06/2023]
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