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van den Besselaar AMHP, Stavelin A, Kitchen S, Bryant M, Tripodi A, Scalambrino E, Clerici M, Herbel P, Jünschke A, Meyer Dos Santos S, Meijer P, Niessen RWLM, Meijers JCM, Thelwell C, Cuker A, Kung C, Cao Z, Zander N, Iwasaki Y, Depasse F, van Rijn C, Baktawar S, Abdoel C, Cobbaert CM. Defining a metrologically traceable and sustainable calibration hierarchy of international normalized ratio for monitoring of vitamin K antagonist treatment in accordance with International Organization for Standardization (ISO) 17511:2020 standard: communication from the International Federation of Clinical Chemistry and Laboratory Medicine-SSC/ISTH working group on prothrombin time/international normalized ratio standardization. J Thromb Haemost 2024; 22:1236-1248. [PMID: 38128762 DOI: 10.1016/j.jtha.2023.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/01/2023] [Accepted: 12/07/2023] [Indexed: 12/23/2023]
Abstract
Calibration of prothrombin time (PT) in terms of international normalized ratio (INR) has been outlined in "Guidelines for thromboplastins and plasmas used to control oral anticoagulant therapy" (World Health Organization, 2013). The international standard ISO 17511:2020 presents requirements for manufacturers of in vitro diagnostic (IVD) medical devices (MDs) for documenting the calibration hierarchy for a measured quantity in human samples using a specified IVD MD. The objective of this article is to define an unequivocal, metrologically traceable calibration hierarchy for the INR measured in plasma as well as in whole blood samples. Calibration of PT and INR for IVD MDs according to World Health Organization guidelines is similar to that in cases where there is a reference measurement procedure that defines the measurand for value assignment as described in ISO 17511:2020. We conclude that, for PT/INR standardization, the optimal calibration hierarchy includes a primary process to prepare an international reference reagent and measurement procedure that defines the measurand by a value assignment protocol conforming to clause 5.3 of ISO 17511:2020. A panel of freshly prepared human plasma samples from healthy adult individuals and patients on vitamin K antagonists is used as a commutable secondary calibrator as described in ISO 17511:2020. A sustainable metrologically traceable calibration hierarchy for INR should be based on an international protocol for value assignment with a single primary reference thromboplastin and the harmonized manual tilt tube technique for clotting time determination. The primary international reference thromboplastin reagent should be used only for calibration of successive batches of the secondary reference thromboplastin reagent.
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Affiliation(s)
- Antonius M H P van den Besselaar
- Coagulation Reference Laboratory, Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, the Netherlands.
| | - Anne Stavelin
- The Norwegian Organisation for Quality Improvement of Laboratory Examinations, Bergen, Norway
| | - Steve Kitchen
- Sheffield Haemophilia and Thrombosis Centre, Royal Hallamshire Hospital, Sheffield, UK
| | - Michelle Bryant
- Sheffield Haemophilia and Thrombosis Centre, Royal Hallamshire Hospital, Sheffield, UK
| | - Armando Tripodi
- Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milano and Fondazione Luigi Villa, Milano, Italy
| | - Erica Scalambrino
- Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milano and Fondazione Luigi Villa, Milano, Italy
| | - Marigrazia Clerici
- Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milano and Fondazione Luigi Villa, Milano, Italy
| | | | | | | | - Piet Meijer
- External quality Control of diagnostic Assays and Tests (ECAT) Foundation, Voorschoten, the Netherlands
| | | | - Joost C M Meijers
- Department of Molecular Hematology, Sanquin Research, Amsterdam, the Netherlands; Department of Experimental Vascular Medicine, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Craig Thelwell
- Therapeutic Reference Materials, Medicines and Healthcare Products Regulatory Agency, National Institute for Biological Standards and Control, Potters Bar, UK
| | - Adam Cuker
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | | | | | | | | | - Claudia van Rijn
- Coagulation Reference Laboratory, Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - Shanti Baktawar
- Coagulation Reference Laboratory, Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - Charmane Abdoel
- Coagulation Reference Laboratory, Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - Christa M Cobbaert
- Coagulation Reference Laboratory, Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, the Netherlands
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Arcudi S, Gualtierotti R, Scalambrino E, Clerici M, Hassan S, Begnozzi V, Boccalandro EA, Novembrino C, Valsecchi C, Palla R, Peyvandi F. Predictive parameters for spontaneous joint bleeding during emicizumab prophylaxis. Blood Adv 2024:bloodadvances.2023012285. [PMID: 38531053 DOI: 10.1182/bloodadvances.2023012285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/27/2024] [Accepted: 02/27/2024] [Indexed: 03/28/2024] Open
Abstract
Emicizumab is approved for prophylaxis of patients with hemophilia A (HA). Despite its efficacy in reducing bleeding, a few patients on emicizumab still experience hemarthrosis, but no tool is yet available to identify those at higher risk of spontaneous joint bleeding. To evaluate whether laboratory measurements (global coagulation assays and emicizumab concentration) and/or arthropathy scores can distinguish patients at higher risk of spontaneous joint bleeding while on emicizumab prophylaxis. Thrombin generation assay (TGA) was assessed upon the addition of tissue factor and synthetic phospholipids. Non-activated thromboelastography (NATEM) was performed in citrated whole blood. Emicizumab concentrations were measured with a modified one-stage FVIII assay. The degree of hemophilic arthropathy was assessed with the Haemophilia Joint Health Score (HJHS) and Hemophilia Early Arthropathy Detection with Ultrasound score (HEAD-US). A Cox proportional hazards model was used to evaluate the association between variables and bleeding. The predictive power of these variables was investigated by ROC analysis. Forty HA patients with and without inhibitors on emicizumab prophylaxis were enrolled in an observational cohort study. Ten of 40 developed spontaneous joint bleeding. None of the lab parameters were able to distinguish patients at higher risk of spontaneous joint bleeding. ROC analysis showed that during emicizumab prophylaxis only the presence of synovitis and a higher HEAD-US score were associated with spontaneous joint bleeding (AUC 0.84). A greater degree of arthropathy and the presence of synovitis could help to predict the risk of spontaneous joint bleeding in HA patients on emicizumab prophylaxis.
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Affiliation(s)
- Sara Arcudi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy, Milan, Italy
| | | | - Erica Scalambrino
- Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milano, Italy
| | | | - Shermarke Hassan
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Italy
| | | | | | | | - Carla Valsecchi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Milan, Italy
| | | | - Flora Peyvandi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Italy
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Tripodi A, Clerici M, Scalambrino E, Agosti P, Bucciarelli P, Peyvandi F. How the Hemostasis Laboratory Can Help Clinicians to Manage Patients on Oral Anticoagulants. Mediterr J Hematol Infect Dis 2024; 16:e2024027. [PMID: 38468834 PMCID: PMC10927209 DOI: 10.4084/mjhid.2024.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 02/14/2024] [Indexed: 03/13/2024] Open
Abstract
Oral anticoagulants are widely used to treat or prevent cardiovascular diseases in millions of patients worldwide. They are the drugs of choice for stroke prevention and systemic embolism in patients with non-valvular atrial fibrillation and prosthetic heart valves, as well as for treatment/prevention of venous thromboembolism. Oral anticoagulants include vitamin K antagonists (VKAs) and direct oral anticoagulants (DOACs). The hemostasis laboratory plays a crucial role in the management of treated patients, spanning from dose adjustment based on laboratory testing that applies to VKAs to the measurement of drug concentrations in special situations that apply to DOACs. This article aims to overview how the hemostasis laboratory can help clinicians manage patients on oral anticoagulants. Special interest is devoted to the international normalized ratio, used to manage patients on VKAs and to the measurement of DOAC concentrations, for which the role of the laboratory is still not very well defined, and most interferences of DOACs with some of the most common hemostatic parameters are not widely appreciated.
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Affiliation(s)
- Armando Tripodi
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi, Heomophilia and Thrombosis Center, Milan, Italy
| | - Marigrazia Clerici
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi, Heomophilia and Thrombosis Center, Milan, Italy
| | - Erica Scalambrino
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi, Heomophilia and Thrombosis Center, Milan, Italy
| | - Pasquale Agosti
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi, Heomophilia and Thrombosis Center, Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milano, Italy
| | - Paolo Bucciarelli
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi, Heomophilia and Thrombosis Center, Milan, Italy
| | - Flora Peyvandi
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi, Heomophilia and Thrombosis Center, Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milano, Italy
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Scalambrino E, Faioni EM, Clerici M, Avarello I, Capecchi M, Pasca S, Tripodi A. Bilirubin color interference on prothrombin time and activated partial thromboplastin time tests assessed in patients with liver disease. Clin Chem Lab Med 2023; 61:e244-e247. [PMID: 37337903 DOI: 10.1515/cclm-2023-0393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 05/19/2023] [Indexed: 06/21/2023]
Affiliation(s)
- Erica Scalambrino
- IRCCS Ca' Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy
| | - Elena M Faioni
- ASST Santi Carlo e Paolo, SIMT Presidio San Paolo, Milan, Italy
- Department of Health Sciences, Università degli Studi di Milan, Milan, Italy
| | - Marigrazia Clerici
- IRCCS Ca' Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy
| | - Ilaria Avarello
- ASST Santi Carlo e Paolo, SIMT Presidio San Paolo, Milan, Italy
| | - Marco Capecchi
- IRCCS Ca' Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy
| | - Samantha Pasca
- IRCCS Ca' Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy
| | - Armando Tripodi
- IRCCS Ca' Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy
- Fondazione Luigi Villa, Milan, Italy
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Scalambrino E, Clerici M, Scardo S, Capecchi M, Della Noce C, Testa S, Peyvandi F, Tripodi A. COVID-19. Comparison of D-dimer levels measured with 3 commercial platforms. Res Pract Thromb Haemost 2023; 7:102247. [PMID: 38193049 PMCID: PMC10772868 DOI: 10.1016/j.rpth.2023.102247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 09/13/2023] [Accepted: 10/19/2023] [Indexed: 01/10/2024] Open
Affiliation(s)
- Erica Scalambrino
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milano, Italy
| | - Marigrazia Clerici
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milano, Italy
| | - Sara Scardo
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milano, Italy
| | - Marco Capecchi
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milano, Italy
| | | | | | - Flora Peyvandi
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milano, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Armando Tripodi
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milano, Italy
- Fondazione Luigi Villa, Milano, Italy
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Capecchi M, De Leo P, Abbattista M, Mancini I, Agosti P, Biganzoli M, Suffritti C, Ferrari B, Lecchi A, La Marca S, Padovan L, Scalambrino E, Clerici M, Tripodi A, Artoni A, Gualtierotti R, Peyvandi F. Risk of relapse after SARS-CoV-2 vaccine in the Milan cohort of thrombotic thrombocytopenic purpura patients. Haematologica 2023; 108:3152-3155. [PMID: 36951158 PMCID: PMC10620557 DOI: 10.3324/haematol.2022.282478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 03/14/2023] [Indexed: 03/24/2023] Open
Affiliation(s)
- Marco Capecchi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy; Clinica Moncucco, Division of Hematology, Lugano
| | - Pasqualina De Leo
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan
| | - Maria Abbattista
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan
| | - Ilaria Mancini
- Università degli Studi di Milano, Department of Pathophysiology and Transplantation and Fondazione Luigi Villa, Milan
| | - Pasquale Agosti
- Università degli Studi di Milano, Department of Pathophysiology and Transplantation and Fondazione Luigi Villa, Milan
| | - Marina Biganzoli
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan
| | - Chiara Suffritti
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan
| | - Barbara Ferrari
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan
| | - Anna Lecchi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan
| | - Silvia La Marca
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan
| | - Lidia Padovan
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan
| | - Erica Scalambrino
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan
| | - Marigrazia Clerici
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan
| | - Armando Tripodi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan
| | - Andrea Artoni
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan
| | - Roberta Gualtierotti
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy; Università degli Studi di Milano, Department of Pathophysiology and Transplantation and Fondazione Luigi Villa, Milan
| | - Flora Peyvandi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy; Università degli Studi di Milano, Department of Pathophysiology and Transplantation and Fondazione Luigi Villa, Milan.
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Suffritti C, Gualtierotti R, Arcudi S, Ciavarella A, Novembrino C, Lecchi A, La Marca S, Padovan L, Scalambrino E, Clerici M, Bono P, Ceriotti F, Muscatello A, Siboni SM, Peyvandi F. Characterization of Immunogenicity and Safety of COVID-19 mRNA-1273 in HIV-Positive Italian Patients with Hemophilia: A Prospective Single-Center Cohort Study. J Clin Med 2023; 12:5475. [PMID: 37685542 PMCID: PMC10487950 DOI: 10.3390/jcm12175475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/03/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023] Open
Abstract
To characterize the immunogenicity of mRNA-1273 (Moderna, Cambridge, MA, USA) vaccine in HIV-positive hemophilic patients during the third COVID-19 wave in Italy and to investigate biomarkers of coagulation and endothelial perturbation before and after complete vaccination schedule, twenty-three consecutive adult HIV-positive patients with hemophilia were included. Blood was collected before and two weeks after vaccination. We measured anti-SARS-CoV-2 spike protein antibodies to assess immunogenicity; circulating biomarkers of coagulation (protein C and D-dimer), endothelial perturbation (von Willebrand factor (VWF)) and anti-Platelet Factor 4 (PF4) antibodies were analyzed. Flow-based analysis of thrombus formation was performed in nine patients using a flow-chamber device. Two weeks after completing the vaccination schedule, all patients had anti-spike antibodies values consistent with an effective immunization. Mean (±standard deviation) basal values of protein C and VWF (106 ± 21% and 171 ± 45%, respectively) were not significantly different from data obtained two weeks after the second dose (103 ± 20%, 162 ± 43%, respectively). D-dimer median values (interquartile range) were not significantly different at baseline (442 (603-142) ng/mL) and after the second dose (477 (654-262) ng/mL). Anti-PF4 antibodies were detected in three patients with no associated clinical manifestations. No significant differences were found in flow-based analysis of thrombus formation. Our data demonstrate that in HIV-positive patients with hemophilia, SARS-CoV-2 vaccination is effective and safe, with no effects on coagulation and endothelial perturbation.
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Affiliation(s)
- Chiara Suffritti
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
| | - Roberta Gualtierotti
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milan, Italy
| | - Sara Arcudi
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milan, Italy
| | - Alessandro Ciavarella
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, 20122 Milan, Italy
| | - Cristina Novembrino
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
| | - Anna Lecchi
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
| | - Silvia La Marca
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
| | - Lidia Padovan
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
| | - Erica Scalambrino
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
| | - Marigrazia Clerici
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
| | - Patrizia Bono
- Clinical Laboratory, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Ferruccio Ceriotti
- Clinical Laboratory, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Antonio Muscatello
- Infectious Diseases Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Simona Maria Siboni
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
| | - Flora Peyvandi
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20122 Milan, Italy
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Tripodi A, Scalambrino E, Clerici M, Peyvandi F. Laboratory Diagnosis of Antiphospholipid Syndrome in Anticoagulated Patients. Biomedicines 2023; 11:1760. [PMID: 37371855 DOI: 10.3390/biomedicines11061760] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/06/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
The laboratory diagnosis of antiphospholipid syndrome (APS) requires the measurement of solid-phase antibodies to cardiolipin or β2-Glycoprotein-I and the search for lupus anticoagulant (LA). The diagnosis of patients whilst on anticoagulation is impaired by the difficult interpretation of results, at least for LA, owing to the fact that prolongations of clotting times induced by LA superimpose those induced by anticoagulants. This is a matter of concern as treating physicians very often need to know the APS status of their patients to make a decision on secondary antithrombotic prophylaxis. This article aims to review the effect brought about by anticoagulants on APS diagnosis and discuss the options that can be used to overcome such an effect.
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Affiliation(s)
- Armando Tripodi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
- Fondazione Luigi Villa, 20122 Milano, Italy
| | - Erica Scalambrino
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
| | - Marigrazia Clerici
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
| | - Flora Peyvandi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, 20122 Milan, Italy
- Department of Pathophysiology and Transplantation, Università Degli Studi di Milano, 20122 Milano, Italy
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Tripodi A, Scalambrino E, Clerici M, Chantarangkul V, Peyvandi F. Thromboplastin calibration revisited to look for possible revision of the World Health Organization recommendations. J Thromb Haemost 2023; 21:311-316. [PMID: 36700497 DOI: 10.1016/j.jtha.2022.11.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 11/08/2022] [Accepted: 11/12/2022] [Indexed: 01/26/2023]
Abstract
BACKGROUND Thromboplastin calibration is essential to determine the international sensitivity index required to calculate the international normalized ratio (INR). The procedure for calibration recommended by the World Health Organization (WHO) calls for the selection of patients on stable anticoagulation in the range of 1.5 to 4.5 INR. These patients are difficult to be recruited as the conventional therapeutic interval for warfarin is 2.0 to 3.0. A possible solution could be including patients with less intense anticoagulation in the calibration. OBJECTIVES We sought to investigate the impact of this amended procedure on the parameters of calibration. METHODS Eight data sets from previous calibrations of a rabbit thromboplastin that included patients on anticoagulation as required by WHO were used for this pilot study. Parameters of calibration as determined by the full data sets are identified as "full calibrations" and are considered reference. Each of the data sets were used to recalculate the calibration parameters after including patients with INRs of <4.0, <3.5, or <3.0, which were identified as "trimmed calibrations" and compared with those from the full calibrations. RESULTS There was marginal variation of the international sensitivity index, CV, and INR that can be hardly of practical significance. CV was the most affected parameter, which increased from the full to the trimmed <3.0 calibration, but never exceeded the 3% cutoff value recommended by WHO. CONCLUSIONS Should the results of this pilot study be confirmed for the calibration of other thromboplastins, revision of the WHO recommendations to include patients with INR from 1.5 to 4.0 is warranted.
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Affiliation(s)
- Armando Tripodi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milano and Fondazione Luigi Villa, Milano, Italy.
| | - Erica Scalambrino
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milano and Fondazione Luigi Villa, Milano, Italy
| | - Marigrazia Clerici
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milano and Fondazione Luigi Villa, Milano, Italy
| | - Veena Chantarangkul
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milano and Fondazione Luigi Villa, Milano, Italy
| | - Flora Peyvandi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milano and Fondazione Luigi Villa, Milano, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milano, Italy
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10
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Valenti L, Tripodi A, La Mura V, Pelusi S, Bianco C, Scalambrino E, Margarita S, Malvestiti F, Ronzoni L, Clerici M, D’Ambrosio R, Fraquelli M, Carpani R, Prati D, Peyvandi F. Interplay between coagulation and determinants of liver disease in patients with metabolic dysfunction. JHEP Rep 2022; 4:100598. [PMID: 36313186 PMCID: PMC9597122 DOI: 10.1016/j.jhepr.2022.100598] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background & Aims The aim of this study was to examine the determinants of the interplay between liver damage and the coagulation balance in individuals at risk of non-alcoholic fatty liver disease (NAFLD). Methods We considered 581 healthy participants with ≥3 metabolic alterations undergoing clinical and genomic evaluation, measurement of liver stiffness (LSM) and controlled attenuation parameter (CAP) by Fibroscan, Pro-C3, coagulation balance (von Willebrand factor [vWF], factor VIII/protein C ratio [F8/PC] as the main outcome, D-dimer as marker of coagulation/fibrinolysis activation). Results Liver fibrosis indices (both Fibrosis-4 [FIB-4] and liver stiffness measurement [LSM]), but not liver fat (CAP), were independently associated with higher F8/PC ratio (p <0.01), triggering D-dimer formation (p = 2E-21). In keeping with a causal role of liver damage in determining a procoagulant status, the main fatty liver inherited risk variant PNPLA3 p.I148M was independently associated with the F8/PC ratio (p = 0.048). Vice versa, the main determinant of the coagulation balance was ABO locus variation (p = 1E-16), through the impact on vWF (p = 8E-26). Both rs687289 ABO and factor V Leiden were independently associated with higher Pro-C3 (p <0.025), with the effect of ABO being mediated by the impact on vWF (p = 5E-10 for association with Pro-C3). Mendelian randomisation analysis was consistent with a causal association of procoagulant imbalance with heightened fibrogenesis (p = 0.001 at robust MR-Egger for Pro-C3), but not with fibrosis (for LSM; p = not significant). Conclusions In individuals with metabolic dysfunction, liver damage severity and possibly the PNPLA3 p.I148M variant were associated with procoagulant status. Vice versa, evaluation of inherited variants in ABO and other genes influencing coagulation was consistent with a causal role of procoagulant imbalance in activation of early stages of fibrogenesis. Lay summary In individuals with metabolic alterations at risk of metabolic fatty liver disease, there is a tendency toward heightened blood coagulation (clotting), but the cause and the impact on the progression of liver disease remain unclear. Here we show that liver damage severity and metabolic alterations, but not hepatic fat, are mainly responsible for heightened coagulation in patients with metabolic fatty liver disease. By using genetic approaches, we showed that hepatic inflammation due to lipotoxicity may favour heightened coagulation, which in turn can trigger liver fibrosis, igniting a vicious cycle that leads to progressive liver disease. There is a complex interplay between liver damage and the coagulation balance in individuals at risk of non-alcoholic fatty liver disease. Non-invasive indices and genetic determinants of liver damage, but not fat, were associated with a procoagulant imbalance. Vice versa, genetic predisposition to hypercoagulability was associated with fibrogenesis. In individuals with metabolic dysfunction, liver damage appears to promote coagulation, which in turn can activate fibrogenesis.
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11
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Scalambrino E, Clerici M, Peyvandi F, Tripodi A. Impact of a commercially available DOAC absorbent on two integrated procedures for lupus anticoagulant detection in plasma containing argatroban. Int J Lab Hematol 2022; 44:e204-e207. [PMID: 35504547 DOI: 10.1111/ijlh.13861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 04/19/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Erica Scalambrino
- IRCCS Ca' Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy
| | - Marigrazia Clerici
- IRCCS Ca' Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy
| | - Flora Peyvandi
- IRCCS Ca' Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Armando Tripodi
- IRCCS Ca' Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy
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12
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Ferrante E, Serban AL, Clerici M, Indirli R, Scalambrino E, Carosi G, Padovan L, Locatelli M, Arosio M, Peyvandi F, Mantovani G, Tripodi A. Evaluation of procoagulant imbalance in Cushing's syndrome after short- and long-term remission of disease. J Endocrinol Invest 2022; 45:9-16. [PMID: 34115342 PMCID: PMC8741706 DOI: 10.1007/s40618-021-01605-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 05/28/2021] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Patients with Cushing's syndrome (CS) are at high risk of venous thromboembolism related to a hypercoagulability due to procoagulant imbalance. However, whether these alterations are reversible after disease remission is still unclear. The endogenous thrombin potential (ETP) measured with and without the addition of thrombomodulin provides a global representation of coagulation and previous data confirmed hypercoagulable profile in patients with active hypercortisolism. Aim of this study was to assess the short- and long-term modification of ETP in patients with CS after disease remission. DESIGN AND METHODS Nineteen patients with CS for whom surgical remission was achieved, were prospectively evaluated for clinical characteristics, cortisol secretion profile and ETP at different time points: (i) before surgical intervention; (ii) after 6 months and (iii) 5 years from the time of persistent remission. Nineteen healthy subjects matched for age and gender were also evaluated as control group. RESULTS Before surgery, patients showed higher ETP-ratio (with/without thrombomodulin) than controls (0.62 ± 0.09-vs-0.56 ± 0.09, p = 0.034). No significant correlation between ETP-ratio and cortisol secretion was found. 6 months after remission, ETP-ratio was still significantly increased compared to controls (0.64 ± 0.09-vs-0.56 ± 0.09, p = 0.01), but was similar to baseline (0.64 ± 0.09-vs-0.62 ± 0.09, p = 0.87). At 5 years, ETP-ratio showed a significant decrease (0.55 ± 0.14-vs-0.62 ± 0.09, p = 0.02) and was comparable to controls (0.55 ± 0.14-vs-0.56 ± 0.09, p = 0.7). CONCLUSIONS Plasma hypercoagulability detected in patients with active hypercortisolism persists at short-term evaluation and seems to be completely reversible after long-term remission of disease. These data, as part of a whole evaluation of thrombotic risk, can contribute to make appropriate therapeutic choice in these patients.
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Affiliation(s)
- E Ferrante
- Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano, Via Francesco Sforza, 35, 20143, Milano, Italy
| | - A L Serban
- Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano, Via Francesco Sforza, 35, 20143, Milano, Italy
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - M Clerici
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore, Milano, Italy
| | - R Indirli
- Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano, Via Francesco Sforza, 35, 20143, Milano, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milano, Italy
| | - E Scalambrino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore, Milano, Italy
| | - G Carosi
- Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano, Via Francesco Sforza, 35, 20143, Milano, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milano, Italy
| | - L Padovan
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore, Milano, Italy
| | - M Locatelli
- Neurosurgery Department, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano, Milano, Italy
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - M Arosio
- Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano, Via Francesco Sforza, 35, 20143, Milano, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milano, Italy
| | - F Peyvandi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore, Milano, Italy
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - G Mantovani
- Endocrinology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano, Via Francesco Sforza, 35, 20143, Milano, Italy.
- Department of Clinical Sciences and Community Health, University of Milan, Milano, Italy.
| | - A Tripodi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore, Milano, Italy
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13
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Peyvandi F, Scalambrino E, Clerici M, Lecchi A, Revelli N, Palla R, Gualtierotti R, Prati D, Tripodi A. No changes of parameters nor coagulation activation in healthy subjects vaccinated for SARS-Cov-2. Thromb Update 2021; 4:100059. [PMID: 38620667 PMCID: PMC8230843 DOI: 10.1016/j.tru.2021.100059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 06/24/2021] [Indexed: 11/22/2022] Open
Abstract
Background Recent reports of thrombotic events after SARS-Cov-2 vaccination raised concern. However, modifications of the most common coagulation parameters after vaccination are unknown. Aims We measured parameters of coagulation including (i) basic coagulation tests, (ii) procedures aimed to assess the ex-vivo potential capacity to generate thrombin and (iii) in vivo thrombin activity. We also assessed anti-platelet factor 4 (aPF4) with two methods. Design Laboratory measurements were performed for a cohort of subjects (n = 30) before (baseline) and after (7 and 21days after first dose, and 14days after second dose) SARS-Cov-2 vaccination. Results All subjects received the Pfizer-BioNTech vaccine, and none developed symptomatic thrombotic events during the study period. None of the parameters showed clinically relevant variations at different time-points before and after vaccination. Only platelet count showed a slight increase, and F1.2 and the thrombin generation parameters ETP and ETP-TM ratio, showed a small decline, at the last time-point after vaccination when compared to baseline. aPF4 was negative in all the subjects, except two, who were positive (one with the chemiluminescent and the other with the ELISA assay). Conclusions The study shows no modifications of the coagulation parameters nor the presence of biochemical signs of coagulation activation following the administration of the Pfizer-BioNTech vaccine.
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Affiliation(s)
- Flora Peyvandi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione Luigi Villa, Milan, Italy
- Università degli Studi di Milano, Department of Pathophysiology and Transplantation, Milan, Italy
| | - Erica Scalambrino
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione Luigi Villa, Milan, Italy
| | - Marigrazia Clerici
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione Luigi Villa, Milan, Italy
| | - Anna Lecchi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione Luigi Villa, Milan, Italy
| | - Nicoletta Revelli
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Department of Transfusion Medicine and Hematology, Milan, Italy
| | - Roberta Palla
- Università degli Studi di Milano, Department of Pathophysiology and Transplantation, Milan, Italy
| | - Roberta Gualtierotti
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione Luigi Villa, Milan, Italy
- Università degli Studi di Milano, Department of Pathophysiology and Transplantation, Milan, Italy
| | - Daniele Prati
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Department of Transfusion Medicine and Hematology, Milan, Italy
| | - Armando Tripodi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione Luigi Villa, Milan, Italy
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14
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Tripodi A, Rossi SC, Clerici M, Merati G, Scalambrino E, Mancini I, Baronciani L, Boscarino M, Monzani V, Peyvandi F. Pro-coagulant imbalance in patients with community acquired pneumonia assessed on admission and one month after hospital discharge. Clin Chem Lab Med 2021; 59:1699-1708. [PMID: 34192831 DOI: 10.1515/cclm-2021-0538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 06/07/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Patients hospitalized because of community-acquired-pneumonia (CAP) are at risk of cardiovascular diseases. Although plasma procoagulant imbalance play a role, mechanisms are not completely understood. We aimed to investigate whether there is a measurable state of procoagulant imbalance following inflammation determined by CAP. METHODS We analyzed blood from 51 CAP patients at admission and 51 healthy subjects (HS) for (i) pro and anticoagulants, (ii) thrombin generation (TG) with or without thrombomodulin (TM), which is the physiologic activator of the protein C anticoagulant pathway and(iii) by assessing the ratio between von Willebrand-factor (VWF) and its protease ADAMTS13. Thirty patients were re-analyzed one month after discharge when CAP was resolved. RESULTS Median levels of TG parameters, including the endogenous thrombin potential (ETP), the ETP-TM-ratio (with/without TM), peak-thrombin and velocity index were higher in patients at baseline than HS. In particular, the median (IQR) ETP-TM-ratio in patients vs. HS was 0.88 (0.83-0.91) vs. 0.63 (0.48-0.71), p<0.001. Factor (F)VIII, a potent procoagulant involved in TG was higher in patients at baseline than HS [195 U/dL (100-388) vs. 127(108-145)], p<0.001]. The ratio of VWF/ADAMTS13 was higher at baseline than HS. Cumulatively, the findings indicate a state of pro-coagulant imbalance, which (although reduced), remained high [i.e., ETP-TM-ratio, 0.80 (0.74-0.84); FVIII, 152 U/dL (122-190)] one month after discharge when the infection was resolved. CONCLUSIONS Patients with CAP possess a state of pro-coagulant imbalance, which remains substantially high, even when the infection is resolved. The findings suggest CAP patients as candidates for antithrombotic prophylaxis even after the resolution of infection. Clinical trials are warranted to assess the benefit/risk ratio of prophylaxis extension.
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Affiliation(s)
- Armando Tripodi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan and Fondazione Luigi Villa, Milan, Italy
| | - Simona C Rossi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Divisione Medicina Generale Alta Intensità di Cura, Milan, Italy
| | - Marigrazia Clerici
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan and Fondazione Luigi Villa, Milan, Italy
| | - Giuliana Merati
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan and Fondazione Luigi Villa, Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Erica Scalambrino
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan and Fondazione Luigi Villa, Milan, Italy
| | - Ilaria Mancini
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan and Fondazione Luigi Villa, Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Luciano Baronciani
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan and Fondazione Luigi Villa, Milan, Italy
| | - Marco Boscarino
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Valter Monzani
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Divisione Medicina Generale Alta Intensità di Cura, Milan, Italy
| | - Flora Peyvandi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan and Fondazione Luigi Villa, Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
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15
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Indirli R, Ferrante E, Scalambrino E, Profka E, Clerici M, Lettera T, Serban AL, Vena W, Pizzocaro A, Bonomi M, Cangiano B, Carosi G, Mazziotti G, Persani L, Lania A, Arosio M, Peyvandi F, Mantovani G, Tripodi A. Procoagulant Imbalance in Klinefelter Syndrome Assessed by Thrombin Generation Assay and Whole-Blood Thromboelastometry. J Clin Endocrinol Metab 2021; 106:e1660-e1672. [PMID: 33382882 PMCID: PMC7993570 DOI: 10.1210/clinem/dgaa936] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Indexed: 11/19/2022]
Abstract
CONTEXT Klinefelter syndrome (KS) is a condition at increased risk of thrombosis compared to 46,XY men. OBJECTIVE This work aimed to investigate the coagulation balance of KS patients by thrombin generation assay (TGA) and thromboelastometry. METHODS An observational, cross-sectional study was conducted at 3 tertiary endocrinological centers in Milan, Italy. Fifty-eight KS patients and 58 age-matched healthy controls were included. Anticoagulant or antiplatelet therapy and known coagulation disorders were exclusion criteria. TGA was performed in platelet-poor plasma (PPP) and platelet-rich plasma (PRP). Whole-blood thromboelastometry and activities of coagulation factors were assessed. Endogenous thrombin potential (ETP), the area under the thrombin generation curve, assessed with and without thrombomodulin (ETP-TM+ and ETP-TM-), and their ratio (ETP ratio), were considered as indexes of procoagulant imbalance. RESULTS Patients with KS displayed higher PPP-ETP-TM+ (mean 1528 vs 0.1315 nM × min; P < .001), PPP-ETP ratio (0.78 vs 0.0.70; P < .001), factor (F)VIII (135% vs 0.107%; P = .001), fibrinogen (283 vs 0.241 mg/dL; P < .001), and FVIII/protein C ratio (1.21 vs 0.1.06; P < .05) compared to controls. Protein C was comparable in the 2 groups. Similar results were observed in PRP. The ETP ratio was positively associated with FVIII (ρ = 0.538, P < .001) in KS. Thromboelastometry parameters confirmed evidence of hypercoagulability in KS. CONCLUSION Patients with KS display a procoagulant imbalance expressed by increased thrombin generation both in PPP and PRP, which is at least in part explained by increased FVIII levels. The procoagulant imbalance, which was confirmed by thromboelastometry, may be responsible for the thrombotic events observed in these patients. Further investigation on the benefit/risk ratio of antithrombotic prophylaxis is warranted.
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Affiliation(s)
- Rita Indirli
- Endocrinology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Emanuele Ferrante
- Endocrinology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, Milan, Italy
| | - Erica Scalambrino
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy
| | - Eriselda Profka
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Marigrazia Clerici
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy
| | - Tommaso Lettera
- Laboratorio analisi, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Andreea Liliana Serban
- Endocrinology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, Milan, Italy
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Walter Vena
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
- Endocrinology, Diabetology and Andrology Unit, Humanitas Clinical and Research Center IRCCS, Rozzano, Milan, Italy
| | - Alessandro Pizzocaro
- Endocrinology, Diabetology and Andrology Unit, Humanitas Clinical and Research Center IRCCS, Rozzano, Milan, Italy
| | - Marco Bonomi
- IRCCS Istituto Auxologico Italiano, Department of Endocrine and Metabolic Diseases and Lab of Endocrine and Metabolic Diseases, Milan, Italy
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Biagio Cangiano
- IRCCS Istituto Auxologico Italiano, Department of Endocrine and Metabolic Diseases and Lab of Endocrine and Metabolic Diseases, Milan, Italy
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Giulia Carosi
- Endocrinology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, Milan, Italy
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Gherardo Mazziotti
- Endocrinology, Diabetology and Andrology Unit, Humanitas Clinical and Research Center IRCCS, Rozzano, Milan, Italy
- Humanitas University, Department of Biomedical Sciences, Pieve Emanuele, Milan, Italy
| | - Luca Persani
- IRCCS Istituto Auxologico Italiano, Department of Endocrine and Metabolic Diseases and Lab of Endocrine and Metabolic Diseases, Milan, Italy
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Andrea Lania
- Endocrinology, Diabetology and Andrology Unit, Humanitas Clinical and Research Center IRCCS, Rozzano, Milan, Italy
- Humanitas University, Department of Biomedical Sciences, Pieve Emanuele, Milan, Italy
| | - Maura Arosio
- Endocrinology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Flora Peyvandi
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy
| | - Giovanna Mantovani
- Endocrinology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
- Correspondence: Giovanna Mantovani, MD, PhD, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, Department: Endocrinology Unit, Via Francesco Sforza, 35, Milan, 20122, Italy.
| | - Armando Tripodi
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy
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16
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Ghirardello S, Lecchi A, Artoni A, Panigada M, Aliberti S, Scalambrino E, La Marca S, Boscarino M, Gramegna A, Properzi P, Abruzzese C, Blasi F, Grasselli G, Mosca F, Tripodi A, Peyvandi F. Assessment of Platelet Thrombus Formation under Flow Conditions in Adult Patients with COVID-19: An Observational Study. Thromb Haemost 2021; 121:1087-1096. [PMID: 33545735 DOI: 10.1055/s-0041-1722919] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Coronavirus disease 2019 (COVID-19) is associated with systemic inflammation, which may dysregulate platelet function. Total Thrombus-Formation Analysis System (T-TAS) is a flow-chamber device that analyses platelet-mediated thrombus formation in capillary channels through the following parameters: (1) the area under the flow-pressure curve (AUC), (2) occlusion start time (OST), time needed to reach OST, and (3) occlusion time (OT), time needed to reach the occlusion pressure. METHODS AND FINDINGS Sixty-one COVID-19 patients admitted to intensive, subintensive, and low intensive care were prospectively enrolled according to the time of admission: group A (up to 8 days) (n = 18); group B (from 9 to 21 days) (n = 19), and group C ( > 21 days) (n = 24). T-TAS measurements were performed at enrolment and after 7 days. Median OST was similar among groups. AUC was lower in group A compared to B (p = 0.001) and C (p = 0.033). OT was longer in group A compared to B (p = 0.001) and C (p = 0.028). Platelet count (PC) was higher in group B compared to A (p = 0.024). The linear regression showed that OT and AUC were independent from PC in group A (OT: 0.149 [95% confidence interval [CI]: -0.326 to 0.624], p = 0.513 and AUC: 0.005 [95% CI: -0.008 to 0.017], p = 0,447). In contrast, in group B, PC was associated with OT (-0.019 [-0.028 to 0.008], p = 0.023) and AUC (0.749 [0.358-1.139], p = 0,015), similarly to group C. Conversely, patients with different illness severity had similar T-TAS parameters. CONCLUSION COVID-19 patients display an impaired platelet thrombus formation in the early phase of the disease compared to later stages and controls, independently from illness severity.
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Affiliation(s)
- Stefano Ghirardello
- Neonatal Intensive Care Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Anna Lecchi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Andrea Artoni
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Mauro Panigada
- Department of Anesthesia and Critical Care, Fondazione IRCCS Ca' Granda, Ospedale Maggiore, Milan, Italy
| | - Stefano Aliberti
- Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Erica Scalambrino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Silvia La Marca
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Marco Boscarino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Andrea Gramegna
- Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Paolo Properzi
- Department of Anesthesia and Critical Care, Fondazione IRCCS Ca' Granda, Ospedale Maggiore, Milan, Italy
| | - Chiara Abruzzese
- Department of Anesthesia and Critical Care, Fondazione IRCCS Ca' Granda, Ospedale Maggiore, Milan, Italy
| | - Francesco Blasi
- Respiratory Unit and Cystic Fibrosis Adult Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Giacomo Grasselli
- Department of Anesthesia and Critical Care, Fondazione IRCCS Ca' Granda, Ospedale Maggiore, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Fabio Mosca
- Neonatal Intensive Care Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Armando Tripodi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Flora Peyvandi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
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17
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Capecchi M, Scalambrino E, Griffini S, Grovetti E, Clerici M, Merati G, Chantarangkul V, Cugno M, Peyvandi F, Tripodi A. Relationship between thrombin generation parameters and prothrombin fragment 1 + 2 plasma levels. Int J Lab Hematol 2021; 43:e248-e251. [PMID: 33433957 DOI: 10.1111/ijlh.13462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 12/18/2020] [Accepted: 12/21/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Marco Capecchi
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Erica Scalambrino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Samantha Griffini
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Elena Grovetti
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Fondazione Luigi Villa, Milan, Italy
| | - Marigrazia Clerici
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Giuliana Merati
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Veena Chantarangkul
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Fondazione Luigi Villa, Milan, Italy
| | - Massimo Cugno
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Fondazione Luigi Villa, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Flora Peyvandi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Fondazione Luigi Villa, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Armando Tripodi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Fondazione Luigi Villa, Milan, Italy
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18
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Tripodi A, Chantarangkul V, Novembrino C, Scalambrino E, Boscolo-Anzoletti M, Clerici M, Rossi F, Peyvandi F. Emicizumab, the factor VIII mimetic bi-specific monoclonal antibody and its measurement in plasma. ACTA ACUST UNITED AC 2020; 59:365-371. [DOI: 10.1515/cclm-2020-0696] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 08/19/2020] [Indexed: 11/15/2022]
Abstract
Abstract
Objectives
Emicizumab, a monoclonal antibody mimicking the function of factor (F) VIII in the activation of FX by FIXa, is widely used for prophylaxis in hemophilia patients with or without inhibitors to FVIII. Although it is administered at fixed dose, its measurement could be occasionally required. In principle, the emicizumab procoagulant effect could be assessed by the one-stage assay (OSA) currently used to measure FVIII. However, the OSA for FVIII presents with limitations. Furthermore, owing to its potent FVIII-like activity, emicizumab interferes with the measurement of the inhibitor to FVIII, which is often needed in patients on emicizumab.
Methods
We prepared test samples by spiking a FVIII-deficient plasma with graded amounts of emicizumab. We modified the OSA for FVIII and tested plasma samples for emicizumab concentrations. Furthermore the chromogenic assay (CA) for FVIII with bovine reagents was used to assess for the FVIII inhibitor in patients on emicizumab.
Results
Slight modification of the OSA for FVIII (i.e., higher test plasma dilution and longer coagulometer acquisition time) made the regular OSA as a reliable laboratory tool to measure emicizumab concentration as shown by the identity of the regression (observed vs. expected) lines. Furthermore, the inhibitors to FVIII in patients on emicizumab, which were negative when measured by the regular Bethesda assay, were reliably measured by the CA assay employing bovine reagents.
Conclusions
The methods currently used to measure FVIII can be easily modified to make the general clinical laboratory able to assist clinicians when dealing with patients on emicizumab.
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Affiliation(s)
- Armando Tripodi
- Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Università degli Studi di Milano , Milan , Italy
- Fondazione Luigi Villa , Milan , Italy
| | - Veena Chantarangkul
- Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Università degli Studi di Milano , Milan , Italy
- Fondazione Luigi Villa , Milan , Italy
| | - Cristina Novembrino
- Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Università degli Studi di Milano , Milan , Italy
| | - Erica Scalambrino
- Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Università degli Studi di Milano , Milan , Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano , Milan , Italy
| | - Massimo Boscolo-Anzoletti
- Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Università degli Studi di Milano , Milan , Italy
| | - Marigrazia Clerici
- Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Università degli Studi di Milano , Milan , Italy
| | - Federica Rossi
- Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Università degli Studi di Milano , Milan , Italy
| | - Flora Peyvandi
- Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Università degli Studi di Milano , Milan , Italy
- Fondazione Luigi Villa , Milan , Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano , Milan , Italy
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19
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van den Besselaar AMHP, van Rijn CJJ, Abdoel CF, Chantarangkul V, Scalambrino E, Kitchen S, Tripodi A, Woolley AM, Padovan L, Cobbaert CM. Paving the way for establishing a reference measurement system for standardization of plasma prothrombin time: Harmonizing the manual tilt tube method. J Thromb Haemost 2020; 18:1986-1994. [PMID: 32356308 PMCID: PMC7496835 DOI: 10.1111/jth.14873] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/20/2020] [Accepted: 04/22/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND International normalized ratio (INR) is traceable to World Health Organization (WHO) International Standards for thromboplastins. International Standards must be used with a manual tilt tube technique (MTT) for prothrombin time (PT) determination. An important part of the total variability of INR is due to poor harmonization of MTT across WHO reference laboratories. OBJECTIVES To determine the origins of PT differences between operators performing MTT and to develop a harmonized MTT. METHODS Two workshops were held where WHO reference laboratory operators could compare their PTs using MTT and the same equipment. A harmonized MTT was used by seven operators in the second workshop. RESULTS Differences have been observed in tilting frequency and in the height of pipetting plasma in the test tube. At the beginning of the first workshop, the tilting cycle time varied between 1.1 and 2.7 seconds. The mean PT of normal plasma obtained by pipetting plasma at the top of the tube was 14.3 seconds but was 12.9 seconds when plasma was pipetted at the bottom of the tube. When using the harmonized MTT for WHO International Standard rTF/16, the differences between operators were not greater than 1.1 seconds in normal plasma, and not greater than 1.3 seconds in patient plasma with average INR of 3.0. INR between-operator coefficient of variation was 2.3%. CONCLUSION Application of a harmonized MTT in three reference laboratories resulted in substantial reduction of between-operator variation of PT and INR. The harmonized MTT is proposed as Candidate Reference Measurement Procedure.
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Affiliation(s)
- Antonius M. H. P. van den Besselaar
- Coagulation Reference LaboratoryDepartment of Clinical Chemistry and Laboratory MedicineLeiden University Medical CentreLeidenThe Netherlands
| | - Claudia J. J. van Rijn
- Coagulation Reference LaboratoryDepartment of Clinical Chemistry and Laboratory MedicineLeiden University Medical CentreLeidenThe Netherlands
| | - Charmane F. Abdoel
- Coagulation Reference LaboratoryDepartment of Clinical Chemistry and Laboratory MedicineLeiden University Medical CentreLeidenThe Netherlands
| | - Veena Chantarangkul
- Angelo Bianchi Bonomi Hemophilia and Thrombosis CenterFondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico and Fondazione Luigi VillaMilanoItaly
| | - Erica Scalambrino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis CenterFondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico and Fondazione Luigi VillaMilanoItaly
| | - Steve Kitchen
- Department of CoagulationRoyal Hallamshire HospitalSheffieldUK
| | - Armando Tripodi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis CenterFondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico and Fondazione Luigi VillaMilanoItaly
| | | | - Lidia Padovan
- Angelo Bianchi Bonomi Hemophilia and Thrombosis CenterFondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico and Fondazione Luigi VillaMilanoItaly
| | - Christa M. Cobbaert
- Coagulation Reference LaboratoryDepartment of Clinical Chemistry and Laboratory MedicineLeiden University Medical CentreLeidenThe Netherlands
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20
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Raffaeli G, Tripodi A, Cavallaro G, Cortesi V, Scalambrino E, Pesenti N, Artoni A, Mosca F, Ghirardello S. Thromboelastographic profiles of healthy very low birthweight infants serially during their first month. Arch Dis Child Fetal Neonatal Ed 2020; 105:412-418. [PMID: 31704736 DOI: 10.1136/archdischild-2019-317860] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 09/11/2019] [Accepted: 10/18/2019] [Indexed: 12/22/2022]
Abstract
OBJECTIVE We determined thromboelastographic (TEG) profiles of healthy very low birthweight infants (VLBWIs) of the day of birth and at set intervals during their first month. DESIGN Prospective observational study with blinded clinical and laboratory follow-up. SETTING Level III neonatal intensive care unit (June 2015 to June 2018). PATIENTS Consecutive qualifying VLBWIs were enrolled at birth and followed up for 30 days. INTERVENTIONS AND MAIN OUTCOMES MEASURES Laboratory (citrated-native TEG, prothrombin time (PT), activated partial thromboplastin time (APTT), fibrinogen, blood count) and clinical variables were retrieved at birth, 3rd-5th, 10th and 30th day of life. Blood samples temporally related to events with a potential hemostatic impact (sepsis, bleeding, platelets/plasma transfusions, ibuprofen/indomethacin administration) were excluded from analysis. RESULTS We enrolled 201 VLBWIs and 72 full-term neonates. Sixty-seven of the healthy VLBWIs completed the 30-day follow-up. 541 TEG traces were analysed.On day 1, the median (minimum-maximum) TEG values were as follows: reaction time (R), 8.2 min (1-21.8); kinetics (K), 2.8 min (0.8-16); α angle, 51° (14.2-80.6); maximum amplitude (MA), 54.9 mm (23.9-76.8). PT and APTT were 15.9 s (11.7-51.2) and 59 s (37.8-97.5), respectively. The above parameters suggest minor hypocoagulability compared with term infants. On day 30, the median (minimum-maximum) R was 5 (1-16.9), K 1 (0.8-4.1), α 74.7 (41.1-86.7) and MA 70.2 (35.8-79.7). PT and APTT were 12.1 (10.4-16.6) and 38.8 (29.6-51.4), respectively. Those parameters are consistent with a relatively hypercoagulable phenotype, compared with term infants. CONCLUSIONS Healthy VLBWIs have a prolonged PT and APTT, but their TEG profiles suggest a relatively balanced hemostatic system, with slight hypocoagulability initially (compared with term neonates), gradually evolving to a somewhat more procoagulant phenotype over the first month.
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Affiliation(s)
- Genny Raffaeli
- NICU, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Armando Tripodi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Giacomo Cavallaro
- NICU, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Valeria Cortesi
- NICU, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Erica Scalambrino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Nicola Pesenti
- Department of Statistics and Quantitative Methods, Division of Biostatistics, Epidemiology and Public Health, University of Milano-Bicocca, Milan, Italy
| | - Andrea Artoni
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Fabio Mosca
- NICU, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Stefano Ghirardello
- NICU, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
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21
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Raffaeli G, Tripodi A, Manzoni F, Scalambrino E, Pesenti N, Amodeo I, Cavallaro G, Villamor E, Peyvandi F, Mosca F, Ghirardello S. Is placental blood a reliable source for the evaluation of neonatal hemostasis at birth? Transfusion 2020; 60:1069-1077. [PMID: 32315090 DOI: 10.1111/trf.15785] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 01/28/2020] [Accepted: 03/03/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Phlebotomy is among the main determinants of anemia of prematurity. Blood sparing policies endorsed umbilical cord blood (here called placental) as an alternative source for laboratory testing. Little is known on the suitability of placental blood to evaluate neonatal hemostasis of newborn infants. We aimed to compare the hemostatic profile of paired placental and infant venous blood, by means of prothrombin time (PT), activated partial thromboplastin time (APTT), fibrinogen, antithrombin, protein C, thromboelastography (TEG) and thrombin generation assay (TGA). STUDY DESIGN This was an observational single-center study. METHODS We collected at birth venous citrated blood from both placental and infant venous source and performed PT, APTT, fibrinogen, antithrombin, protein C, TEG (reaction time-R; kinetics-K alpha angle-α, maximum amplitude-MA and lysis at 30 minutes-LY30), and TGA (endogenous thrombin potential-ETP). RESULTS We enrolled 60 neonates with a median gestational age (range) of 37 weeks (28+1 -41) and birth-weight 2417 g (950-4170). Based on TEG and TGA, placental blood showed a procoagulant imbalance as indicated by lower median R (4.0 vs. 6.1 min; p < 0.001) and K (1.3 vs. 2.2 min; p < 0.001); higher α-angle (69.7 vs. 57.4°; p < 0.001) and ETP (1260 vs. 1078; p = 0.002) than those observed for infant venous blood. PT and APTT did not differ significantly between the two groups. CONCLUSIONS While placental and neonatal blood samples are equally suitable to measure the standard coagulation tests PT and APTT, placental blood leads to a procoagulant imbalance when testing is performed with TEG or TGA. These effects should be considered when interpreting results stemming from investigation of neonatal hemostasis.
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Affiliation(s)
- Genny Raffaeli
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
| | - Armando Tripodi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Milan, Italy
| | - Francesca Manzoni
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Erica Scalambrino
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Milan, Italy
| | - Nicola Pesenti
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy.,Department of Statistics and Quantitative Methods, Division of Biostatistics, Epidemiology and Public Health, University of Milano-Bicocca, Milan, Italy
| | - Ilaria Amodeo
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Giacomo Cavallaro
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
| | - Eduardo Villamor
- Department of Pediatrics, Maastricht University Medical Center (MUMC+), School for Oncology and Developmental Biology (GROW), Maastricht, The Netherlands
| | - Flora Peyvandi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Fabio Mosca
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Stefano Ghirardello
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
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22
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Scalambrino E, Padovan L, Chantarangkul V, Clerici M, Artoni A, Peyvandi F, Tripodi A. Responsiveness of the activated partial thromboplastin time and dilute thrombin time to argatroban: Results of an in vitro study. Int J Lab Hematol 2020; 42:e128-e131. [PMID: 32086868 DOI: 10.1111/ijlh.13165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 01/27/2020] [Accepted: 01/29/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Erica Scalambrino
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Milano, Italy.,Università degli Studi di Milano Department of Pathophysiology and Transplantation, Milano, Italy
| | - Lidia Padovan
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Milano, Italy
| | - Veena Chantarangkul
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Milano, Italy
| | - Marigrazia Clerici
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Milano, Italy
| | - Andrea Artoni
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Milano, Italy
| | - Flora Peyvandi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Milano, Italy.,Università degli Studi di Milano Department of Pathophysiology and Transplantation, Milano, Italy
| | - Armando Tripodi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Milano, Italy
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23
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Ghirardello S, Raffaeli G, Scalambrino E, Cortesi V, Roggero P, Peyvandi F, Mosca F, Tripodi A. Thrombin Generation in Preterm Newborns With Intestinal Failure-Associated Liver Disease. Front Pediatr 2020; 8:510. [PMID: 32984220 PMCID: PMC7479833 DOI: 10.3389/fped.2020.00510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 07/20/2020] [Indexed: 01/04/2023] Open
Abstract
Background and Aim: Intestinal failure-associated liver disease (IFALD) affects one-fifth of neonates receiving parenteral nutrition (PN) for more than 2 weeks. We aimed to define the effect of IFALD on hemostasis of preterm infants. Methods: This is an ancillary analysis of a prospective study aimed at defining coagulation in preterm infants. We included neonates exposed to PN (at least 14 days), in full-enteral feeding. We compared thrombin generation in the presence of thrombomodulin, defined as endogenous thrombin potential-ETP, PT, aPTT between infants with IFALD vs. those without (controls), at birth, and after 30 days. IFALD was defined as conjugated bilirubin ≥1 mg/dl. Results: We enrolled 92 preterm infants (32 IFALD; 60 controls). Cholestatic patients had a lower birthweight, longer exposure to PN, and longer hospitalization. Infants with IFALD showed longer median PT (12.8-vs.-12 sec; p = 0.02) and aPTT (39.2-vs.-36.5 sec; p = 0.04) than controls, with no difference in ETP. Conclusions: Despite prolonged PTs and aPTTs infants with IFALD had similar ETP than those without.
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Affiliation(s)
- Stefano Ghirardello
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
| | - Genny Raffaeli
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Erica Scalambrino
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Milan, Italy
| | - Valeria Cortesi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Paola Roggero
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
| | - Flora Peyvandi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Fabio Mosca
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Armando Tripodi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Milan, Italy
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24
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Tripodi A, Primignani M, Badiali S, de Ruberto F, Granelli P, Tosetti G, Clerici M, Padovan L, Chantarangkul V, Scalambrino E, Peyvandi F. Body mass index reduction improves the baseline procoagulant imbalance of obese subjects. J Thromb Thrombolysis 2019; 48:52-60. [PMID: 30701462 DOI: 10.1007/s11239-019-01818-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Obesity is a risk factor for cardiovascular diseases. The latter being dependent (at least in part) on plasma procoagulant imbalance (i.e., hypercoagulability). Information on hypercoagulability associated with obesity is scanty and mainly based on global traditional coagulation tests or on the measurement of individual components of coagulation (i.e., pro- and anticoagulants). Plasma from 33 obese subjects was investigated soon before endoscopic balloon placement and after removal (6 months later) by thrombin-generation procedures that are thought to represent much better than any other in vitro test the coagulation process occurring in vivo. We found that obese subjects possess a state of hypercoagulability as demonstrated by the modification of the main parameters of thrombin-generation. In particular, the median value (min-max) of the endogenous thrombin potential (ETP) of obese subjects at baseline was higher than that of controls [1968 (1335-2533) vs. 1710 (1010-2119), p < 0.001]. Endoscopic balloon placement achieved a BMI reduction from 38.9 (31.7-62.3) to 31.6 (21.9-53.3), p < 0.001 and a parallel reduction of thrombin-generation as demonstrated by the following findings. The ETP measured soon after balloon removal was significantly smaller than that measured at baseline [1783 (1224-2642) vs. 1968 (1335-2533), p < 0.01]. The other parameters of thrombin-generation, including lag-time, peak-thrombin, time-to-reach the peak and velocity index showed a pattern consistent with the ETP, both at baseline and soon after balloon removal. Endoscopic balloon placement achieves concomitant reduction of BMI and thrombin-generation in subjects with obesity.
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Affiliation(s)
- Armando Tripodi
- IRCCS Cà Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi villa, Via Pace 9, 20122, Milano, Italy.
| | - Massimo Primignani
- Division of Gastroenterology and Hepatology, IRCCS Cà Granda Maggiore Hospital Foundation Milano, A.M. and A. Migliavacca Center for Liver Disease, Milano, Italy
| | - Sara Badiali
- Divisione di Chirurgia Generale, IRCCS Cà Granda Maggiore Hospital Foundation Milano, Milano, Italy
| | - Fausto de Ruberto
- Divisione di Chirurgia Generale, IRCCS Cà Granda Maggiore Hospital Foundation Milano, Milano, Italy
| | - Paola Granelli
- Divisione di Chirurgia Generale, IRCCS Cà Granda Maggiore Hospital Foundation Milano, Milano, Italy
| | - Giulia Tosetti
- Division of Gastroenterology and Hepatology, IRCCS Cà Granda Maggiore Hospital Foundation Milano, A.M. and A. Migliavacca Center for Liver Disease, Milano, Italy
| | - Marigrazia Clerici
- IRCCS Cà Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi villa, Via Pace 9, 20122, Milano, Italy
| | - Lidia Padovan
- IRCCS Cà Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi villa, Via Pace 9, 20122, Milano, Italy
| | - Veena Chantarangkul
- IRCCS Cà Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi villa, Via Pace 9, 20122, Milano, Italy
| | - Erica Scalambrino
- IRCCS Cà Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi villa, Via Pace 9, 20122, Milano, Italy
| | - Flora Peyvandi
- IRCCS Cà Granda Maggiore Hospital Foundation, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi villa, Via Pace 9, 20122, Milano, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milano, Italy
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Tripodi A, Chantarangkul V, Padovan L, Clerici M, Scalambrino E, Peyvandi F. Effect of emicizumab on global coagulation assays for plasma supplemented with apixaban or argatroban. J Thromb Thrombolysis 2019; 49:413-419. [PMID: 31728842 DOI: 10.1007/s11239-019-01993-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Emicizumab is a bi-specific humanized monoclonal antibody mimicking the factor (F) VIII cofactor activity in mediating the activation of FX by FIXa. Recent observations showed that emicizumab when added to pooled normal plasma (PNP), hemophilic plasma or PNP added with unfractionated heparin is able to interfere with coagulation assays. To further explore the mechanisms of assay interference we investigated the effect of emicizumab on global coagulation assays for the PNP added with two direct oral anticoagulants, apixaban or argatroban. Aliquots of PNP were added with purified apixaban or argatroban at a concentration of 500 ng/mL and emicizumab at concentrations ranging from 0 to 100 µg/mL. Plasma samples were then tested for the activated partial thromboplastin time (APTT) and for thrombin generation (the latter for the apixaban plasma only). Emicizumab at a 25-50 µg/mL shortened the APTT of the PNP with or without apixaban or argatroban. The extent of correction was greater for the apixaban or argatroban plasma and amounted to 35% or 42%, respectively. The parameters of thrombin generation (lag-time and time-to-peak) for the PNP supplemented with apixaban were shortened by 30% or 25%, respectively and the endogenous thrombin potential and the peak-thrombin were marginally affected. Emicizumab attenuates in vitro the anticoagulant activity of the PNP induced by apixaban or argatroban as documented by the correction of prolonged APTT and velocity of thrombin generation (i.e., lag-time and time-to-peak). Whether the above effects have any relevance in vivo is unknown.
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Affiliation(s)
- Armando Tripodi
- Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Via Pace 9, 20122, Milan, Italy.
| | - Veena Chantarangkul
- Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Via Pace 9, 20122, Milan, Italy
| | - Lidia Padovan
- Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Via Pace 9, 20122, Milan, Italy
| | - Marigrazia Clerici
- Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Via Pace 9, 20122, Milan, Italy
| | - Erica Scalambrino
- Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Via Pace 9, 20122, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Flora Peyvandi
- Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Fondazione Luigi Villa, Via Pace 9, 20122, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
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Tripodi A, Raffaeli G, Scalambrino E, Padovan L, Clerici M, Chantarangkul V, Cavallaro G, Peyvandi F, Mosca F, Ghirardello S. Procoagulant imbalance in preterm neonates detected by thrombin generation procedures. Thromb Res 2019; 185:96-101. [PMID: 31786478 DOI: 10.1016/j.thromres.2019.11.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 10/07/2019] [Accepted: 11/11/2019] [Indexed: 01/05/2023]
Abstract
Preterm newborns are considered at risk of acquired coagulopathy and are often prophylactically infused with fresh frozen plasma (FFP) even in the absence of bleeding. To assess the coagulation asset of preterm neonates and the biological plausibility of such infusions, we investigated at birth 87 very low birth weight (≤1500 g) preterm (gestational age <35 weeks) newborns and 64 full-term newborns. Preterm neonates were also investigated at different time-points up to 30 days after birth. Plasma from preterm and full-term neonates were subjected to the measurement of prothrombin and activated partial thromboplastin time (PT, APTT), pro- and anticoagulant factors as well as to thrombin-generation procedures both with and without thrombomodulin. PT and APTT of preterm newborns were longer than those of full-term neonates [PT: 15.9 s (11.7-51.2)-vs-13.8 (11.0-25.4), p < 0.001. APTT: 59.0 (37.8-97.5)-vs- 47.3 (28.1-71.9), p < 0.001] and tended to shortening after 30 days from birth. Thrombin-generation defined as endogenous thrombin potential (ETP) was increased in preterm as compared to full-term neonates at birth [1322 nM·min (474-2384)-vs-1006 (697-1612), p < 0.001] and did not change appreciably over time up to 30 days from birth. In conclusion, plasma from preterm neonates displays a procoagulant imbalance at birth as shown by increasing ETP, despite the prolongation of PT and APTT. The results define preterm newborns as having hyper- rather than hypo-coagulability and argue against the infusion of FFP when given prophylactically and/or based solely on prolongation of PT or APTT.
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Affiliation(s)
- Armando Tripodi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico and Fondazione Luigi Villa, Milano, Italy.
| | - Genny Raffaeli
- NICU, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Erica Scalambrino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico and Fondazione Luigi Villa, Milano, Italy
| | - Lidia Padovan
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico and Fondazione Luigi Villa, Milano, Italy
| | - Marigrazia Clerici
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico and Fondazione Luigi Villa, Milano, Italy
| | - Veena Chantarangkul
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico and Fondazione Luigi Villa, Milano, Italy
| | - Giacomo Cavallaro
- NICU, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Flora Peyvandi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico and Fondazione Luigi Villa, Milano, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milano, Italy
| | - Fabio Mosca
- NICU, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy; Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milano, Italy
| | - Stefano Ghirardello
- NICU, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
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27
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Biguzzi E, Siboni SM, Clerici M, Padovan L, Scalambrino E, Chantarangkul V, Novembrino C, Tripodi A. Global coagulation tests to assess the value of the presurgical treatment in a patient with congenital factor XI deficiency and inhibitor. Int J Lab Hematol 2019; 42:e68-e70. [PMID: 31693301 DOI: 10.1111/ijlh.13113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/14/2019] [Accepted: 09/15/2019] [Indexed: 11/28/2022]
Affiliation(s)
- Eugenia Biguzzi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Simona M Siboni
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Marigrazia Clerici
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Lidia Padovan
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Erica Scalambrino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy.,Department of Pathophysiology and Transplantation, Fondazione Luigi Villa, Università degli Studi di Milano, Milano, Italy
| | - Veena Chantarangkul
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione Luigi Villa, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Cristina Novembrino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Armando Tripodi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione Luigi Villa, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
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Ghirardello S, Raffaeli G, Scalambrino E, Chantarangkul V, Cavallaro G, Artoni A, Mosca F, Tripodi A. The intra-assay reproducibility of thromboelastography in very low birth weight infants. Early Hum Dev 2018; 127:48-52. [PMID: 30312859 DOI: 10.1016/j.earlhumdev.2018.10.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 07/26/2018] [Accepted: 10/04/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND AND AIMS Despite the potential benefits of thromboelastography (TEG) for bedside hemostatic assessment in critical care settings, its accuracy remains to be determined, especially in critically ill neonates. We determined the intra-assay reproducibility of TEG parameters: Reaction time (R), clot kinetics (K) and Maximum Amplitude (MA) in a cohort of very low birth weight (VLBW) infants. STUDY DESIGN Observational study. SUBJECTS One hundred VLBW newborns. OUTCOME MEASURES We performed TEG duplicate measurements for blood samples from VLBW newborns. To assess for correlation, we calculated the coefficients of correlation by plotting the values of the first vs the second measurement. Paired samples were compared with t-test and the coefficient of variation (CV) on paired results was also calculated as a measure of variability. To evaluate the agreement between duplicates, Bland-Altman (BA) analysis was performed. RESULTS We evaluated 228 TEG pairs. Both the coefficient of correlation and the BA analysis showed an acceptable level of agreement between duplicates. TEG variability (CV, mean ± SD) was highest for K (10.4%, ±12.9), lowest for MA (3.6%, ±8.0) and moderate for R (7.9%, ±9.0). The results from ANOVA one-way analysis describe different variability trends: K-CV increased at higher values, while MA-CV and R-CV increased at lower values. CONCLUSIONS In VLBW newborns, the agreement between TEG duplicate measurements for R and MA parameters is adequate for clinical purposes. TEG is a promising tool to quickly assess hemostasis ensuring a significant blood sparing in critically ill neonates.
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Affiliation(s)
- Stefano Ghirardello
- NICU, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Italy.
| | - Genny Raffaeli
- NICU, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Italy
| | - Erica Scalambrino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Università degli Studi di Milano, Italy
| | - Veena Chantarangkul
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Università degli Studi di Milano, Italy
| | - Giacomo Cavallaro
- NICU, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Italy.
| | - Andrea Artoni
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Università degli Studi di Milano, Italy.
| | - Fabio Mosca
- NICU, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Italy.
| | - Armando Tripodi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Università degli Studi di Milano, Italy.
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Artoni A, Abbattista M, Bucciarelli P, Gianniello F, Scalambrino E, Pappalardo E, Peyvandi F, Martinelli I. Platelet to Lymphocyte Ratio and Neutrophil to Lymphocyte Ratio as Risk Factors for Venous Thrombosis. Clin Appl Thromb Hemost 2017; 24:808-814. [PMID: 29088921 PMCID: PMC6714878 DOI: 10.1177/1076029617733039] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
High platelet to lymphocyte ratio (PLR) and neutrophil to lymphocyte ratio (NLR) are associated with an increased risk of arterial thrombosis, but their role in venous thromboembolism (VTE) has not been fully investigated. A case-control study, of 486 patients with VTE, 100 with cerebral vein thrombosis (CVT), and 299 healthy individuals, was carried out to investigate whether high PLR or NLR values are associated with an increased risk of VTE. Patients with high PLR or NLR did not have an increased risk of VTE (odds ratio [OR] 0.89, 95% confidence interval [CI]: 0.46-1.76; OR: 0.69, 95% CI: 0.34-1.39, respectively) or CVT (OR: 1.65, 95% CI: 0.68-4.00; OR: 0.39, 95% CI: 0.09-1.72, respectively). Subgroups analysis showed that high PLR values were associated with the risk of provoked CVT (OR: 2.65, 95% CI: 1.02-6.92), and there was an interaction with thrombophilia abnormalities (OR: 7.67, 95% CI: 1.67-35.27) in patients with CVT. In conclusion, high PLR and NLR values are not associated with an overall increased risk of VTE or CVT. High PLR values increase the risk of provoked CVT and interact with thrombophilia abnormalities in patients with CVT.
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Affiliation(s)
- Andrea Artoni
- 1 Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milan, Italy
| | - Maria Abbattista
- 1 Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milan, Italy
| | - Paolo Bucciarelli
- 1 Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milan, Italy
| | - Francesca Gianniello
- 1 Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milan, Italy
| | - Erica Scalambrino
- 1 Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milan, Italy
| | - Emanuela Pappalardo
- 2 Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Flora Peyvandi
- 1 Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milan, Italy.,2 Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Ida Martinelli
- 1 Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milan, Italy
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30
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Mancuso ME, Chantarangkul V, Clerici M, Fasulo MR, Padovan L, Scalambrino E, Peyvandi F, Tripodi A, Santagostino E. Low thrombin generation during major orthopaedic surgery fails to predict the bleeding risk in inhibitor patients treated with bypassing agents. Haemophilia 2016; 22:e292-300. [DOI: 10.1111/hae.12939] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/20/2016] [Indexed: 12/15/2022]
Affiliation(s)
- M. E. Mancuso
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center; Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico; Milan Italy
| | - V. Chantarangkul
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center; Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico; Milan Italy
| | - M. Clerici
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center; Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico; Milan Italy
| | - M. R. Fasulo
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center; Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico; Milan Italy
| | - L. Padovan
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center; Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico; Milan Italy
| | - E. Scalambrino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center; Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico; Milan Italy
| | - F. Peyvandi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center; Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico; Milan Italy
- Department of Pathophysiology and Transplantation; University of Milan; Milan Italy
| | - A. Tripodi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center; Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico; Milan Italy
- Department of Clinical Sciences and Community Health; University of Milan; Milan Italy
| | - E. Santagostino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center; Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico; Milan Italy
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31
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Mancuso ME, Chantarangkul V, Clerici M, Fasulo MR, Padovan L, Scalambrino E, Peyvandi F, Tripodi A, Santagostino E. The thrombin generation assay distinguishes inhibitor from non-inhibitor patients with severe haemophilia A. Haemophilia 2016; 22:e286-91. [PMID: 27166132 DOI: 10.1111/hae.12927] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/21/2016] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Patients with haemophilia A (HA) have impaired thrombin generation (TG) capacity and TG assay (TGA) values are linearly related to plasma factor VIII (FVIII) levels. AIM This study carried out in patients with unmeasurable FVIII (<1 IU dL(-1) ) was aimed at unravelling any difference in TG capacity in patients with or without inhibitors. METHODS Blood samples were collected from patients in a non-bleeding state, after a 5-day wash-out period from last treatment. RESULTS TGA was performed in 102 patients with severe HA (15% with high-responding inhibitors; 51% with null F8 mutations, that as expected were more prevalent in inhibitor than in non-inhibitor patients). TG capacity was significantly lower in inhibitor than non-inhibitor patients and in those with null mutations than in those with non-null mutations. When the TG capacity was evaluated only in patients with null mutations with and without inhibitors it was lower in the presence of inhibitors. CONCLUSIONS This study shows a greater TG impairment in inhibitor patients irrespective of FVIII levels, inhibitor titre and F8 mutation type, suggesting a role for the TGA in unravelling functional interferences of anti-FVIII inhibitors on coagulation system activation.
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Affiliation(s)
- M E Mancuso
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - V Chantarangkul
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - M Clerici
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - M R Fasulo
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - L Padovan
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - E Scalambrino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - F Peyvandi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - A Tripodi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.,Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - E Santagostino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
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Tripodi A, Padovan L, Testa S, Legnani C, Chantarangkul V, Scalambrino E, Ludovici S, Bassi L, Peyvandi F. How the direct oral anticoagulant apixaban affects hemostatic parameters. Results of a multicenter multiplatform study. Clin Chem Lab Med 2015; 53:265-73. [PMID: 25153405 DOI: 10.1515/cclm-2014-0531] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Accepted: 07/10/2014] [Indexed: 01/01/2023]
Abstract
BACKGROUND Apixaban is a newly developed direct oral anticoagulant targeting activated factor X (FXa). The degree of interference of apixaban with coagulation parameters has not been thoroughly investigated. METHODS Increasing amounts of apixaban were added to aliquots of a pooled normal plasma (PNP) to mimic a large range of concentrations (n=8) that are observed in treated patients. Upon preparation, samples were stored frozen and tested for a vast array of coagulation parameters (including procoagulant and anticoagulant factors) in three laboratories, using three widely used coagulation platforms (reagent/coagulometer combinations). RESULTS Results for each parameter were expressed as ratios of the value corresponding to each apixaban concentration to the value corresponding to the PNP without apixaban. By definition, ratios higher or lower than the unity define overestimation or underestimation, respectively. Prothrombin and activated partial thromboplastin times were barely prolonged by apixaban 200 ng/mL (ratios <1.29 or <1.19, respectively). Conversely, antithrombin was considerably overestimated when the measurement was made with FXa as target enzyme (ratios up to 1.43). Protein C and protein S were overestimated when measured as anticoagulant activities (ratios up to 1.20 or 1.95, respectively), and most measurements for individual coagulation factors (except fibrinogen) were considerably underestimated (ratios from 0.62 to 1.01). CONCLUSIONS This large multicenter multiplatform study investigating a common set of test plasmas shows that apixaban interferes with the measurement of most coagulation parameters requested for investigation of hemostasis and highlights the need for a careful interpretation of results obtained in patients under treatment.
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Tripodi A, Padovan L, Veena C, Scalambrino E, Testa S, Peyvandi F. How the direct oral anticoagulant apixaban affects thrombin generation parameters. Thromb Res 2015; 135:1186-90. [PMID: 25895845 DOI: 10.1016/j.thromres.2015.03.032] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 02/26/2015] [Accepted: 03/30/2015] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND OBJECTIVES Apixaban is a direct oral anticoagulant (DOAC) targeting factor Xa and thus quenching thrombin generation and clot formation. However, little information is available on the influence that apixaban may have on the parameters of thrombin generation. METHODS Aliquots of a pooled normal plasma have been added with increased concentrations of purified apixaban and were used to assess the degree of modification brought about by the drug on the basic tests of coagulation prothrombin and activated partial thromboplastin time (PT and APTT) and on thrombin generation parameters. RESULTS The study shows that while apixaban has little effect on PT or APTT it does affect all the parameters of thrombin generation, including the lag-time (which is increased), the endogenous thrombin potential (ETP) and thrombin-peak (both decreased although to a different extent), and the velocity index (decreased). Interestingly, the above effects were more pronounced when the measurements were recorded in the presence of thrombomodulin, thus making the ratio (with/without thrombomodulin) to decrease consistently as a function of the apixaban concentrations. CONCLUSIONS These findings support the antithrombotic properties of apixaban and can help to understand the mechanism(s) of action of this drug. Thrombin generation could be used as a convenient laboratory tool to assess the anticoagulant activity of other drugs and to make between-DOAC comparison.
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Affiliation(s)
- Armando Tripodi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, MiIano, ltaly; IRCCS Cà Granda Maggiore Hospital Foundation, Milano, Italy.
| | - Lidia Padovan
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, MiIano, ltaly; IRCCS Cà Granda Maggiore Hospital Foundation, Milano, Italy
| | - Chantarangkul Veena
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, MiIano, ltaly; IRCCS Cà Granda Maggiore Hospital Foundation, Milano, Italy
| | - Erica Scalambrino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, MiIano, ltaly; IRCCS Cà Granda Maggiore Hospital Foundation, Milano, Italy
| | - Sophie Testa
- Haemostasis Thrombosis Center, General Hospital, Cremona, Italy
| | - Flora Peyvandi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Department of Clinical Sciences and Community Health, Università degli Studi di Milano, MiIano, ltaly; IRCCS Cà Granda Maggiore Hospital Foundation, Milano, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milano, Italy
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Artoni A, Merati G, Padovan L, Scalambrino E, Chantarangkul V, Tripodi A. Residual platelets are the main determinants of microparticles count in frozen-thawed plasma. Thromb Res 2012; 130:561-2. [DOI: 10.1016/j.thromres.2012.04.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 03/30/2012] [Accepted: 04/12/2012] [Indexed: 10/28/2022]
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