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Mo A, Wood E, McQuilten Z. Platelet transfusion. Curr Opin Hematol 2024:00062752-990000000-00089. [PMID: 39259696 DOI: 10.1097/moh.0000000000000843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2024]
Abstract
PURPOSE OF REVIEW Platelet transfusions, used as prophylaxis or treatment for bleeding, are potentially life-saving. In many countries, demand for platelet transfusion is rising. Platelets are a limited and costly resource, and it is vital that they are used appropriately. This study will explore the evidence behind platelet transfusions in different contexts, in particular recent and important research in this area. RECENT FINDINGS Recent randomized clinical trials demonstrate the efficacy of platelet transfusions in some contexts but potential detrimental effects in others. Platelet transfusions also carry risk of transfusion reactions, bacterial contamination and platelet transfusion refractoriness. Observational and clinical studies, which highlight approaches to mitigate these risks, will be discussed. There is growing interest in cold-stored or cryopreserved platelet units, which may improve platelet function and availability. Clinical trials also highlight the efficacy of other supportive measures such as tranexamic acid or thrombopoietin receptor agonists in patients with bleeding. SUMMARY Although platelet transfusions are beneficial in many patients, there remain many settings in which the optimal use of platelet transfusions is unclear, and some situations in which they may have detrimental effects. Future clinical trials are needed to determine optimal use of platelet transfusions in different patient populations.
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Affiliation(s)
- Allison Mo
- Transfusion Research Unit, School of Public Health and Preventive Medicine, Monash University
- Monash Haematology, Monash Health
- Austin Pathology, Austin Health
| | - Erica Wood
- Transfusion Research Unit, School of Public Health and Preventive Medicine, Monash University
- Monash Haematology, Monash Health
| | - Zoe McQuilten
- Transfusion Research Unit, School of Public Health and Preventive Medicine, Monash University
- Monash Haematology, Monash Health
- Department of Haematology, Alfred Health, Melbourne, Victoria, Australia
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2
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Kwan PSL, Kirwan S, Tuinukuafe A, Morley S. Temporal dynamics of in vitro hemostatic function in platelets cryopreserved using a novel approach for rapid issuance. Transfusion 2024; 64:1287-1295. [PMID: 38752347 DOI: 10.1111/trf.17871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 02/02/2024] [Accepted: 05/01/2024] [Indexed: 07/17/2024]
Abstract
BACKGROUND Current procedures for thawing and issuing of cryopreserved platelets (CPPs) are laborious and have remained challenging in emergency settings such as blood banks and military operations. In this prospective study, a novel processing method designed to facilitate the rapid issuance of CPPs with no postthaw handling required was developed and functionally characterized in parallel with standard CPPs manufactured. STUDY DESIGN AND METHODS Double-dose plateletpheresis units (n = 42) were cryopreserved at -80°C in 5%-6% dimethyl sulfoxide to produce matched pairs thawed successively over a 27-month period for comparison between two processing arms. In contrast to the standard CPPs manufactured as standalone units, platelets were frozen in tandem with resuspending plasma in a distinct partition as a single unit in the novel method, herein referred to as tandem CPPs. Postthaw (PT) CPPs from both arms were assessed at PT0-, 12-, and 24-h to measure platelet recovery, R-time (time to clot initiation; min), and maximum amplitude (MA; clot strength; mm) using thromboelastography. RESULTS In the overall dataset, mean platelet recovery was higher (p < .0005) for tandem CPPs (83.9%) compared with standard CPPs (73.3%) at PT0; mean R-times were faster (p < .0005) for tandem CPPs (2.5-3.6 min) compared with standard CPPs (3.0-3.8 min); mean MA was higher for tandem CPPs (57.8-59.5 mm) compared with standard CPPs (52.1-55.8 mm) at each postthaw time point (p < .05). CONCLUSION Robust temporal dynamics of superior hemostatic functionality were established for tandem CPPs over extended cryopreservation up to 27 months and 24 h of postthaw storage.
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Affiliation(s)
- Patrick S L Kwan
- Clinical Development, New Zealand Blood Service, Auckland, New Zealand
| | - Susy Kirwan
- Clinical Development, New Zealand Blood Service, Auckland, New Zealand
| | - Alice Tuinukuafe
- Cellular and Tissue Laboratory, New Zealand Blood Service, Auckland, New Zealand
| | - Sarah Morley
- Clinical Development, New Zealand Blood Service, Auckland, New Zealand
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3
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Brown M, Kuhn B, Moskowitz KA, Amos S, Mays EL, Alexander WA, Fitzpatrick GM. Characterization of a canine freeze-dried platelet-derived hemostatic agent: A preclinical model for surgical and traumatic hemorrhage. Thromb Res 2024; 238:67-77. [PMID: 38678865 DOI: 10.1016/j.thromres.2024.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 03/26/2024] [Accepted: 04/12/2024] [Indexed: 05/01/2024]
Abstract
INTRODUCTION A freeze-dried, platelet-derived hemostatic agent (FPH) was developed for acute hemorrhage. The canine product (cFPH) was developed for use in preclinical models supporting human product (hFPH) investigations. MATERIALS AND METHODS A carotid artery bypass graft (CABG) study in dogs compared 3 dosages of cFPH to canine liquid stored platelets (cLSP) and vehicle (VEH) control groups. Histopathological analysis and blood loss assessments were completed. A separate ex-vivo synthetic graft study assessed thrombogenicity via blood from human and canine donors that was combined with species-specific FPH or apheresis platelets. Characterization of cFPH and hFPH included thrombin generation, total thrombus formation, and scanning electron microscopy. RESULTS Blood loss was reduced in CABG dogs receiving standard of care (cLSP) or cFPH treatment compared to VEH control; a cFPH dose effect signal was observed. Further, cFPH dosing up to 5 × 109 cells/kg was not associated with increased mortality or occlusion of the anastomosis sites, and histopathologic evidence of off-target thrombosis was not detected. When passed through a synthetic graft (ex vivo), whole blood combined with species-specific FPH did not result in thrombosis beyond that of whole blood control. In vitro testing and imaging of cFPH and FPH were comparable. CONCLUSIONS A single dose of cFPH or cLSP reduced blood loss in a pilot surgical study and was well tolerated with no related adverse events. Further, the hemostatic activity and characteristics of cFPH are comparable to that of hFPH, suggesting that research findings from the canine product are likely to inform the development of the human product.
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Affiliation(s)
- Meredith Brown
- Cellphire Therapeutics, Inc., 9430 Key West Ave, Rockville, MD 20850, USA.
| | - Benjamin Kuhn
- Cellphire Therapeutics, Inc., 9430 Key West Ave, Rockville, MD 20850, USA.
| | - Keith A Moskowitz
- Cellphire Therapeutics, Inc., 9430 Key West Ave, Rockville, MD 20850, USA.
| | - Stephen Amos
- Cellphire Therapeutics, Inc., 9430 Key West Ave, Rockville, MD 20850, USA.
| | - Erin Long Mays
- Cellphire Therapeutics, Inc., 9430 Key West Ave, Rockville, MD 20850, USA.
| | - W Allan Alexander
- Cellphire Therapeutics, Inc., 9430 Key West Ave, Rockville, MD 20850, USA.
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Engelke M, Schmidt CS, Baldini G, Parmar V, Hosch R, Borys K, Koitka S, Turki AT, Haubold J, Horn PA, Nensa F. Optimizing platelet transfusion through a personalized deep learning risk assessment system for demand management. Blood 2023; 142:2315-2326. [PMID: 37890142 DOI: 10.1182/blood.2023021172] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 09/29/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
ABSTRACT Platelet demand management (PDM) is a resource-consuming task for physicians and transfusion managers of large hospitals. Inpatient numbers and institutional standards play significant roles in PDM. However, reliance on these factors alone commonly results in platelet shortages. Using data from multiple sources, we developed, validated, tested, and implemented a patient-specific approach to support PDM that uses a deep learning-based risk score to forecast platelet transfusions for each hospitalized patient in the next 24 hours. The models were developed using retrospective electronic health record data of 34 809 patients treated between 2017 and 2022. Static and time-dependent features included demographics, diagnoses, procedures, blood counts, past transfusions, hematotoxic medications, and hospitalization duration. Using an expanding window approach, we created a training and live-prediction pipeline with a 30-day input and 24-hour forecast. Hyperparameter tuning determined the best validation area under the precision-recall curve (AUC-PR) score for long short-term memory deep learning models, which were then tested on independent data sets from the same hospital. The model tailored for hematology and oncology patients exhibited the best performance (AUC-PR, 0.84; area under the receiver operating characteristic curve [ROC-AUC], 0.98), followed by a multispecialty model covering all other patients (AUC-PR, 0.73). The model specific to cardiothoracic surgery had the lowest performance (AUC-PR, 0.42), likely because of unexpected intrasurgery bleedings. To our knowledge, this is the first deep learning-based platelet transfusion predictor enabling individualized 24-hour risk assessments at high AUC-PR. Implemented as a decision-support system, deep-learning forecasts might improve patient care by detecting platelet demand earlier and preventing critical transfusion shortages.
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Affiliation(s)
- Merlin Engelke
- Institute for Artificial Intelligence in Medicine, University Medicine Essen, Essen, Germany
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Medicine Essen, Essen, Germany
| | - Cynthia Sabrina Schmidt
- Institute for Artificial Intelligence in Medicine, University Medicine Essen, Essen, Germany
- Institute for Transfusion Medicine, University Medicine Essen, Essen, Germany
| | - Giulia Baldini
- Institute for Artificial Intelligence in Medicine, University Medicine Essen, Essen, Germany
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Medicine Essen, Essen, Germany
| | - Vicky Parmar
- Institute for Artificial Intelligence in Medicine, University Medicine Essen, Essen, Germany
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Medicine Essen, Essen, Germany
| | - René Hosch
- Institute for Artificial Intelligence in Medicine, University Medicine Essen, Essen, Germany
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Medicine Essen, Essen, Germany
| | - Katarzyna Borys
- Institute for Artificial Intelligence in Medicine, University Medicine Essen, Essen, Germany
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Medicine Essen, Essen, Germany
| | - Sven Koitka
- Institute for Artificial Intelligence in Medicine, University Medicine Essen, Essen, Germany
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Medicine Essen, Essen, Germany
| | - Amin T Turki
- Computational Hematology Laboratory, Department of Hematology and Stem Cell Transplantation, West-German Cancer Center, University Medicine Essen, Essen, Germany
- Department of Hematology and Oncology, Marienhospital University Hospital, Ruhr University Bochum, Bochum, Germany
| | - Johannes Haubold
- Institute for Artificial Intelligence in Medicine, University Medicine Essen, Essen, Germany
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Medicine Essen, Essen, Germany
| | - Peter A Horn
- Institute for Transfusion Medicine, University Medicine Essen, Essen, Germany
| | - Felix Nensa
- Institute for Artificial Intelligence in Medicine, University Medicine Essen, Essen, Germany
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Medicine Essen, Essen, Germany
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5
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Gavioli G, Razzoli A, Bedolla DE, Di Bartolomeo E, Quartieri E, Iotti B, Berni P, Birarda G, Vaccari L, Schiroli D, Marraccini C, Baricchi R, Merolle L. Cryopreservation affects platelet macromolecular composition over time after thawing and differently impacts on cancer cells behavior in vitro. Platelets 2023; 34:2281943. [PMID: 38010129 DOI: 10.1080/09537104.2023.2281943] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 11/06/2023] [Indexed: 11/29/2023]
Abstract
Cryopreservation affects platelets' function, questioning their use for cancer patients. We aimed to investigate the biochemical events that occur over time after thawing to optimize transfusion timing and evaluate the effect of platelet supernatants on tumor cell behavior in vitro. We compared fresh (Fresh-PLT) with Cryopreserved platelets (Cryo-PLT) at 1 h, 3 h and 6 h after thawing. MCF-7 and HL-60 cells were cultured with Fresh- or 1 h Cryo-PLT supernatants to investigate cell proliferation, migration, and PLT-cell adhesion. We noticed a significant impairment of hemostatic activity accompanied by a post-thaw decrease of CD42b+ , which identifies the CD62P--population. FTIR spectroscopy revealed a decrease in the total protein content together with changes in their conformational structure, which identified two sub-groups: 1) Fresh and 1 h Cryo-PLT; 2) 3 h and 6 h cryo-PLT. Extracellular vesicle shedding and phosphatidylserine externalization (PS) increased after thawing. Cryo-PLT supernatants inhibited cell proliferation, impaired MCF-7 cell migration, and reduced ability to adhere to tumor cells. Within the first 3 hours after thawing, irreversible alterations of biomolecular structure occur in Cryo-PLT. Nevertheless, Cryo-PLT should be considered safe for the transfusion of cancer patients because of their insufficient capability to promote cancer cell proliferation, adhesion, or migration.
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Affiliation(s)
- Gaia Gavioli
- AUSL-IRCCS di Reggio Emilia, Transfusion Medicine Unit, Reggio Emilia, Italy
- Clinical and Experimental PhD Program, University of Modena and Reggio Emilia, Modena, Italy
| | - Agnese Razzoli
- AUSL-IRCCS di Reggio Emilia, Transfusion Medicine Unit, Reggio Emilia, Italy
- Clinical and Experimental PhD Program, University of Modena and Reggio Emilia, Modena, Italy
| | - Diana E Bedolla
- Elettra - Sincrotrone Trieste S.C.p.A, Basovizza, Italy
- Molecular Pathology Lab, International Center for Genetic Engineering and Biotechnology (ICGEB), Area Science Park, Trieste, Italy
- Center for Biospectroscopy and School of Chemistry, Monash University, Clayton, VIC, Australia
| | | | - Eleonora Quartieri
- AUSL-IRCCS di Reggio Emilia, Transfusion Medicine Unit, Reggio Emilia, Italy
| | - Barbara Iotti
- AUSL-IRCCS di Reggio Emilia, Transfusion Medicine Unit, Reggio Emilia, Italy
| | - Pamela Berni
- AUSL-IRCCS di Reggio Emilia, Transfusion Medicine Unit, Reggio Emilia, Italy
| | | | - Lisa Vaccari
- Elettra - Sincrotrone Trieste S.C.p.A, Basovizza, Italy
| | - Davide Schiroli
- AUSL-IRCCS di Reggio Emilia, Transfusion Medicine Unit, Reggio Emilia, Italy
| | - Chiara Marraccini
- AUSL-IRCCS di Reggio Emilia, Transfusion Medicine Unit, Reggio Emilia, Italy
| | - Roberto Baricchi
- AUSL-IRCCS di Reggio Emilia, Transfusion Medicine Unit, Reggio Emilia, Italy
| | - Lucia Merolle
- AUSL-IRCCS di Reggio Emilia, Transfusion Medicine Unit, Reggio Emilia, Italy
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6
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Lu J, Karkouti K, Peer M, Englesakis M, Spinella PC, Apelseth TO, Scorer TG, Kahr WHA, McVey M, Rao V, Abrahamyan L, Lieberman L, Mewhort H, Devine DV, Callum J, Bartoszko J. Cold-stored platelets for acute bleeding in cardiac surgical patients: a narrative review. Can J Anaesth 2023; 70:1682-1700. [PMID: 37831350 DOI: 10.1007/s12630-023-02561-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/19/2023] [Accepted: 04/30/2023] [Indexed: 10/14/2023] Open
Abstract
PURPOSE Cold-stored platelets (CSP) are an increasingly active topic of international research. They are maintained at 1-6 °C, in contrast to standard room-temperature platelets (RTP) kept at 20-24 °C. Recent evidence suggests that CSP have superior hemostatic properties compared with RTP. This narrative review explores the application of CSP in adult cardiac surgery, summarizes the preclinical and clinical evidence for their use, and highlights recent research. SOURCE A targeted search of MEDLINE and other databases up to 24 February 2022 was conducted. Search terms combined concepts such as cardiac surgery, blood, platelet, and cold-stored. Searches of trial registries ClinicalTrials.gov and WHO International Clinical Trials Registry Platform were included. Articles were included if they described adult surgical patients as their population of interest and an association between CSP and clinical outcomes. References of included articles were hand searched. PRINCIPAL FINDINGS When platelets are stored at 1-6 °C, their metabolic rate is slowed, preserving hemostatic function for increased storage duration. Cold-stored platelets have superior adhesion characteristics under physiologic shear conditions, and similar or superior aggregation responses to physiologic agonists. Cold-stored platelets undergo structural, metabolic, and molecular changes which appear to "prime" them for hemostatic activity. While preliminary, clinical evidence supports the conduct of trials comparing CSP with RTP for patients with platelet-related bleeding, such as those undergoing cardiac surgery. CONCLUSION Cold-stored platelets may have several advantages over RTP, including increased hemostatic capacity, extended shelf-life, and reduced risk of bacterial contamination. Large clinical trials are needed to establish their potential role in the treatment of acutely bleeding patients.
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Affiliation(s)
- Justin Lu
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Keyvan Karkouti
- Department of Anesthesia and Pain Management, Sinai Health System, Women's College Hospital, University Health Network, Toronto General Hospital, Toronto, ON, Canada
- Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, ON, Canada
- Peter Munk Cardiac Centre, University Health Network, Toronto, ON, Canada
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
| | - Miki Peer
- Department of Anesthesia and Pain Management, Sinai Health System, Women's College Hospital, University Health Network, Toronto General Hospital, Toronto, ON, Canada
| | - Marina Englesakis
- Library & Information Services, University Health Network, Toronto, ON, Canada
| | - Philip C Spinella
- Department of Critical Care Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Torunn O Apelseth
- Department of Immunology and Transfusion Medicine, Haukeland University Hospital, University of Bergen, Bergen, Norway
- Norwegian Armed Forces Joint Medical Services, Norwegian Armed Forces, Oslo, Norway
| | - Thomas G Scorer
- Centre of Defence Pathology, Royal Centre for Defence Medicine, Birmingham, UK
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - Walter H A Kahr
- Division of Haematology/Oncology, The Hospital for Sick Children (SickKids), Toronto, ON, Canada
- Cell Biology Program, SickKids Research Institute, Toronto, ON, Canada
- Departments of Paediatrics and Biochemistry, University of Toronto, Toronto, ON, Canada
| | - Mark McVey
- Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, ON, Canada
- Department of Anesthesia and Pain Medicine, The Hospital for Sick Children (SickKids), Toronto, ON, Canada
- Department of Physics, Toronto Metropolitan University, Toronto, ON, Canada
| | - Vivek Rao
- Division of Cardiovascular Surgery, Peter Munk Cardiac Centre, Toronto General Hospital, University of Toronto, Toronto, ON, Canada
| | - Lusine Abrahamyan
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada
- Toronto Health Economics and Technology Assessment (THETA) Collaborative, Toronto General Research Institute, Toronto, ON, Canada
| | - Lani Lieberman
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Holly Mewhort
- Department of Surgery, School of Medicine, Queen's University, Kingston, ON, Canada
| | - Dana V Devine
- Canadian Blood Services, Vancouver, BC, Canada
- Department of Pathology and Laboratory Medicine, The University of British Columbia, Vancouver, BC, Canada
| | - Jeannie Callum
- Quality in Utilization, Education and Safety in Transfusion Research Program, University of Toronto, Toronto, ON, Canada
- Department of Pathology and Molecular Medicine, School of Medicine, Queen's University, Kingston, ON, Canada
- Kingston Health Sciences Centre, Kingston General Hospital, Kingston, ON, Canada
| | - Justyna Bartoszko
- Department of Anesthesiology and Pain Medicine, University of Toronto, Toronto, ON, Canada.
- Peter Munk Cardiac Centre, University Health Network, Toronto, ON, Canada.
- Department of Anesthesia and Pain Management, Sinai Health System, Women's College Hospital, University Health Network, Toronto General Hospital, 200 Elizabeth Street, 3EN-464, Toronto, ON, M5G 2C4, Canada.
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7
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Lasky B, Singh U, Young PP. Young apheresis platelet donors show significant and sustained growth over the last decade in the US, 2010-2019: A favorable sign of the resiliency of the platelet supply. Transfusion 2023. [PMID: 37191295 DOI: 10.1111/trf.17400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 04/26/2023] [Accepted: 04/26/2023] [Indexed: 05/17/2023]
Abstract
BACKGROUND Platelet demand continues to rise and US hospitals frequently face shortages. The peak median age of apheresis platelet donors (APD) is believed to have increased over the last decade, raising concerns that the APD base is not being adequately replenished with young donors. STUDY DESIGN/METHODS American Red Cross (ARC) apheresis platelet collections were evaluated from calendar years 2010 through 2019. APD, products per procedure/split rate (PPP) and donation frequencies were stratified into age groups. RESULTS/FINDINGS The number of unique APD from calendar year 2010 through 2019 in the ARC donor pool increased from 87,573 to 115,372 donors, representing a 31.7% overall growth. Donors in the 16-40 year-old (y) age group increased by 78.8% overall, with the largest absolute increases seen in the 26-30 y (4852 donors, 99.9% growth), followed by the 31-35 y (3991, 94.1%) group. Donors aged 56+ increased by 50.4% overall, with the largest increase seen in the 66-70 y (5988 donors, 108.1% growth) group. Middle-aged donors, aged 41-55 y, demonstrated a decrease of 16.5%. Over the last decade, the youngest age groups (16-40 y) comprised 61.3% of first-time donors (FTD). Annual donation frequency increased with increasing age and PPP. The highest donation frequencies were seen in the oldest age groups. CONCLUSION Although the peak median age of APD increased over the study period, relative contribution of the 16-40 y APD base also increased. Older donors exhibited the highest donation frequencies and thus contributed the largest volume of apheresis platelet units. Platelet donor activity declined in the middle age (41-55 y) group.
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Affiliation(s)
- Baia Lasky
- American Red Cross, Biomedical Services Division, Washington, District of Columbia, USA
| | - Umesh Singh
- American Red Cross, Biomedical Services Division, Washington, District of Columbia, USA
| | - Pampee P Young
- American Red Cross, Biomedical Services Division, Washington, District of Columbia, USA
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8
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Van Remoortel H, Scheers H, Avau B, Georgsen J, Nahirniak S, Shehata N, Stanworth SJ, De Buck E, Compernolle V, Vandekerckhove P. Cost-Effectiveness of Thrombopoietin Mimetics in Patients with Thrombocytopenia: A Systematic Review. PHARMACOECONOMICS 2023:10.1007/s40273-023-01271-w. [PMID: 37145291 DOI: 10.1007/s40273-023-01271-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/23/2023] [Indexed: 05/06/2023]
Abstract
OBJECTIVES Thrombopoietin (TPO) mimetics are a potential alternative to platelet transfusion to minimize blood loss in patients with thrombocytopenia. This systematic review aimed to evaluate the cost-effectiveness of TPO mimetics, compared with not using TPO mimetics, in adult patients with thrombocytopenia. METHODS Eight databases and registries were searched for full economic evaluations (EEs) and randomized controlled trials (RCTs). Incremental cost-effectiveness ratios (ICERs) were synthesized as cost per quality-adjusted life year gained (QALY) or as cost per health outcome (e.g. bleeding event avoided). Included studies were critically appraised using the Philips reporting checklist. RESULTS Eighteen evaluations from nine different countries were included, evaluating the cost-effectiveness of TPO mimetics compared with no TPO, watch-and-rescue therapy, the standard of care, rituximab, splenectomy or platelet transfusion. ICERs varied from a dominant strategy (i.e. cost-saving and more effective), to an incremental cost per QALY/health outcome of EUR 25,000-50,000, EUR 75,000-750,000 and EUR > 1 million, to a dominated strategy (cost-increasing and less effective). Few evaluations (n = 2, 10%) addressed the four principal types of uncertainty (methodological, structural, heterogeneity and parameter). Parameter uncertainty was most frequently reported (80%), followed by heterogeneity (45%), structural uncertainty (43%) and methodological uncertainty (28%). CONCLUSIONS Cost-effectiveness of TPO mimetics in adult patients with thrombocytopenia ranged from a dominant strategy to a significant incremental cost per QALY/health outcome or a strategy that is clinically inferior and has increased costs. Future validation and tackling the uncertainty of these models with country-specific cost data and up-to-date efficacy and safety data are needed to increase the generalizability.
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Affiliation(s)
- Hans Van Remoortel
- Centre for Evidence-Based Practice, Belgian Red Cross, Mechelen, Belgium.
- Department of Public Health and Primary Care, Leuven Institute for Healthcare Policy, KU Leuven, Leuven, Belgium.
| | - Hans Scheers
- Centre for Evidence-Based Practice, Belgian Red Cross, Mechelen, Belgium
- Department of Public Health and Primary Care, Leuven Institute for Healthcare Policy, KU Leuven, Leuven, Belgium
| | - Bert Avau
- Centre for Evidence-Based Practice, Belgian Red Cross, Mechelen, Belgium
| | - Jørgen Georgsen
- Department of Clinical Immunology, South Danish Transfusion Service and Tissue Center, Odense University Hospital, Odense, Denmark
| | - Susan Nahirniak
- Faculty of Medicine, University of Alberta, Edmonton, Canada
- Transfusion and Transplantation Medicine, Alberta Precision Laboratories, Alberta, Canada
| | - Nadine Shehata
- Departments of Medicine, Laboratory Medicine and Pathobiology, Institute of Health Policy Management and Evaluation, University of Toronto, Mount Sinai Hospital, Toronto, Canada
| | - Simon J Stanworth
- Transfusion Medicine, NHS Blood and Transplant, Oxford, UK
- Radcliffe Department of Medicine, University of Oxford, NIHR Oxford Biomedical Research Centre, Oxford, UK
- Department of Haematology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Emmy De Buck
- Centre for Evidence-Based Practice, Belgian Red Cross, Mechelen, Belgium
- Department of Public Health and Primary Care, Leuven Institute for Healthcare Policy, KU Leuven, Leuven, Belgium
| | - Veerle Compernolle
- Blood Services, Belgian Red Cross, Mechelen, Belgium
- Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Philippe Vandekerckhove
- Department of Public Health and Primary Care, Leuven Institute for Healthcare Policy, KU Leuven, Leuven, Belgium
- Belgian Red Cross, Mechelen, Belgium
- Division of Epidemiology and Biostatistics, Department of Global Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
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9
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Clinically Expired Platelet Concentrates as a Source of Extracellular Vesicles for Targeted Anti-Cancer Drug Delivery. Pharmaceutics 2023; 15:pharmaceutics15030953. [PMID: 36986815 PMCID: PMC10056378 DOI: 10.3390/pharmaceutics15030953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 02/25/2023] [Accepted: 03/13/2023] [Indexed: 03/17/2023] Open
Abstract
The short shelf life of platelet concentrates (PC) of up to 5–7 days leads to higher wastage due to expiry. To address this massive financial burden on the healthcare system, alternative applications for expired PC have emerged in recent years. Engineered nanocarriers functionalized with platelet membranes have shown excellent targeting abilities for tumor cells owing to their platelet membrane proteins. Nevertheless, synthetic drug delivery strategies have significant drawbacks that platelet-derived extracellular vesicles (pEV) can overcome. We investigated, for the first time, the use of pEV as a carrier of the anti-breast cancer drug paclitaxel, considering it as an appealing alternative to improve the therapeutic potential of expired PC. The pEV released during PC storage showed a typical EV size distribution profile (100–300 nm) with a cup-shaped morphology. Paclitaxel-loaded pEV showed significant anti-cancer effects in vitro, as demonstrated by their anti-migratory (>30%), anti-angiogenic (>30%), and anti-invasive (>70%) properties in distinct cells found in the breast tumor microenvironment. We provide evidence for a novel application for expired PC by suggesting that the field of tumor treatment research may be broadened by the use of natural carriers.
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10
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Avau B, O D, Veys K, Georgsen J, Nahirniak S, Shehata N, Stanworth SJ, Van Remoortel H, De Buck E, Compernolle V, Vandekerckhove P. Systematic reviews on platelet transfusions: Is there unnecessary duplication of effort? A scoping review. Vox Sang 2023; 118:16-23. [PMID: 36454598 PMCID: PMC10107266 DOI: 10.1111/vox.13387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 11/03/2022] [Accepted: 11/18/2022] [Indexed: 12/05/2022]
Abstract
BACKGROUND AND OBJECTIVES Platelet transfusions are used across multiple patient populations to prevent and correct bleeding. This scoping review aimed to map the currently available systematic reviews (SRs) and evidence-based guidelines in the field of platelet transfusion. MATERIALS AND METHODS A systematic literature search was conducted in seven databases for SRs on effectiveness (including dose and timing, transfusion trigger and ratio to other blood products), production modalities and decision support related to platelet transfusion. The following data were charted: methodological features of the SR, population, concept and context features, outcomes reported, study design and number of studies included. Results were synthesized in interactive evidence maps. RESULTS We identified 110 SRs. The majority focused on clinical effectiveness, including prophylactic or therapeutic transfusions compared to no platelet transfusion (34 SRs), prophylactic compared to therapeutic-only transfusion (8 SRs), dose, timing (11 SRs) and threshold for platelet transfusion (15 SRs) and the ratio of platelet transfusion to other blood products in massive transfusion (14 SRs). Furthermore, we included 34 SRs on decision support, of which 26 evaluated viscoelastic testing. Finally, we identified 22 SRs on platelet production modalities, including derivation (4 SRs), pathogen inactivation (6 SRs), leucodepletion (4 SRs) and ABO/human leucocyte antigen matching (5 SRs). The SRs were mapped according to concept and clinical context. CONCLUSION An interactive evidence map of SRs and evidence-based guidelines in the field of platelet transfusion has been developed and identified multiple reviews. This work serves as a tool for researchers looking for evidence gaps, thereby both supporting research and avoiding unnecessary duplication.
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Affiliation(s)
- Bert Avau
- Centre for Evidence‐Based Practice, Belgian Red CrossMechelenBelgium
| | - Dorien O
- Centre for Evidence‐Based Practice, Belgian Red CrossMechelenBelgium
| | - Koen Veys
- Centre for Evidence‐Based Practice, Belgian Red CrossMechelenBelgium
| | - Jørgen Georgsen
- South Danish Transfusion Service & Tissue Center, Department of Clinical ImmunologyOdense University HospitalOdenseDenmark
| | - Susan Nahirniak
- Faculty of MedicineUniversity of AlbertaEdmontonCanada
- Transfusion and Transplantation MedicineAlberta Precision LaboratoriesCalgaryAlbertaCanada
| | - Nadine Shehata
- Departments of Medicine, Laboratory Medicine and Pathobiology, Institute of Health Policy Management and EvaluationUniversity of Toronto, Mount Sinai HospitalTorontoCanada
| | - Simon J. Stanworth
- Transfusion MedicineNHS Blood and TransplantOxfordUK
- Radcliffe Department of MedicineUniversity of Oxford, and NIHR Oxford Biomedical Research CentreOxfordUK
- Department of HaematologyOxford University Hospitals NHS Foundation TrustOxfordUK
| | - Hans Van Remoortel
- Centre for Evidence‐Based Practice, Belgian Red CrossMechelenBelgium
- Department of Public Health and Primary CareLeuven Institute for Healthcare Policy, KU LeuvenLeuvenBelgium
| | - Emmy De Buck
- Centre for Evidence‐Based Practice, Belgian Red CrossMechelenBelgium
- Department of Public Health and Primary CareLeuven Institute for Healthcare Policy, KU LeuvenLeuvenBelgium
| | - Veerle Compernolle
- Blood Services, Belgian Red CrossMechelenBelgium
- Faculty of Medicine and Health SciencesGhent UniversityGhentBelgium
| | - Philippe Vandekerckhove
- Department of Public Health and Primary CareLeuven Institute for Healthcare Policy, KU LeuvenLeuvenBelgium
- Belgian Red CrossMechelenBelgium
- Division of Epidemiology and Biostatistics, Department of Global Health, Faculty of Medicine and Health SciencesStellenbosch UniversityCape TownSouth Africa
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There and Back Again: The Once and Current Developments in Donor-Derived Platelet Products for Products for Hemostatic Therapy. Blood 2022; 139:3688-3698. [PMID: 35482959 DOI: 10.1182/blood.2021014889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 04/20/2022] [Indexed: 01/19/2023] Open
Abstract
Over 100 years ago, Duke transfused whole blood to a thrombocytopenic patient to raise the platelet count and prevent bleeding. Since then, platelet transfusions have undergone numerous modifications from whole blood-derived platelet-rich plasma to apheresis-derived platelet concentrates. Similarly, the storage time and temperature have changed. The mandate to store platelets for a maximum of 5-7 days at room temperature has been challenged by recent clinical trial data, ongoing difficulties with transfusion-transmitted infections, and recurring periods of shortages, further exacerbated by the COVID-19 pandemic. Alternative platelet storage approaches are as old as the first platelet transfusions. Cold-stored platelets may offer increased storage times (days) and improved hemostatic potential at the expense of reduced circulation time. Frozen (cryopreserved) platelets extend the storage time to years but require storage at -80 °C and thawing before transfusion. Lyophilized platelets can be powder-stored for years at room temperature and reconstituted within minutes in sterile water but are probably the least explored alternative platelet product to date. Finally, whole blood offers the hemostatic spectrum of all blood components but has challenges, such as ABO incompatibility. While we know more than ever before about the in vitro properties of these products, clinical trial data on these products are accumulating. The purpose of this review is to summarize the findings of recent preclinical and clinical studies on alternative, donor-derived platelet products.
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Arnason NA, Johannsson F, Landrö R, Hardarsson B, Gudmundsson S, Lian AM, Reseland J, Rolfsson O, Sigurjonsson OE. Protein Concentrations in Stored Pooled Platelet Concentrates Treated with Pathogen Inactivation by Amotosalen Plus Ultraviolet a Illumination. Pathogens 2022; 11:pathogens11030350. [PMID: 35335674 PMCID: PMC8954553 DOI: 10.3390/pathogens11030350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 02/04/2023] Open
Abstract
Platelet granules contain a diverse group of proteins. Upon activation and during storage, platelets release a number of proteins into the circulation or supernatant of stored platelet concentrate (PC). The aim of this work was to investigate the effect of pathogen inactivation (PI) on a selection of proteins released in stored platelets. Materials and Methods: PCs in platelet additive solution (PAS) were produced from whole blood donations using the buffy coat (BC) method. PCs in the treatment arm were pathogen inactivated with amotosalen and UVA, while PCs in the second arm were used as an untreated platelet control. Concentrations of 36 proteins were monitored in the PCs during storage. Results: The majority of proteins increased in concentration over the storage period. In addition, 10 of the 29 proteins that showed change had significantly different concentrations between the PI treatment and the control at one or more timepoints. A subset of six proteins displayed a PI-related drop in concentration. Conclusions: PI has limited effect on protein concentration stored PC supernatant. The protein’s changes related to PI treatment with elevated concentration implicate accelerated Platelet storage lesion (PSL); in contrast, there are potential novel benefits to PI related decrease in protein concentration that need further investigation.
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Affiliation(s)
- Niels Arni Arnason
- The Blood Bank, Landspitali-The National University Hospital of Iceland, 105 Reykjavik, Iceland; (N.A.A.); (R.L.); (B.H.); (S.G.)
- School of Engineering, Reykjavik University, 105 Reykjavik, Iceland
| | - Freyr Johannsson
- Department of Medicine, University of Iceland, 105 Reykjavik, Iceland; (F.J.); (O.R.)
| | - Ragna Landrö
- The Blood Bank, Landspitali-The National University Hospital of Iceland, 105 Reykjavik, Iceland; (N.A.A.); (R.L.); (B.H.); (S.G.)
| | - Björn Hardarsson
- The Blood Bank, Landspitali-The National University Hospital of Iceland, 105 Reykjavik, Iceland; (N.A.A.); (R.L.); (B.H.); (S.G.)
| | - Sveinn Gudmundsson
- The Blood Bank, Landspitali-The National University Hospital of Iceland, 105 Reykjavik, Iceland; (N.A.A.); (R.L.); (B.H.); (S.G.)
| | - Aina-Mari Lian
- Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, 0317 Oslo, Norway; (A.-M.L.); (J.R.)
| | - Janne Reseland
- Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, 0317 Oslo, Norway; (A.-M.L.); (J.R.)
| | - Ottar Rolfsson
- Department of Medicine, University of Iceland, 105 Reykjavik, Iceland; (F.J.); (O.R.)
| | - Olafur E. Sigurjonsson
- The Blood Bank, Landspitali-The National University Hospital of Iceland, 105 Reykjavik, Iceland; (N.A.A.); (R.L.); (B.H.); (S.G.)
- School of Engineering, Reykjavik University, 105 Reykjavik, Iceland
- Correspondence: ; Tel.: +354-543-5523 or +354-694-9427; Fax: +354-543-5532
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13
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Schilling M, Rickmann L, Hutschenreuter G, Spreckelsen C. Reduction of Platelet Outdating and Shortage by Forecasting Demand With Statistical Learning and Deep Neural Networks: Modeling Study. JMIR Med Inform 2022; 10:e29978. [PMID: 35103612 PMCID: PMC8848235 DOI: 10.2196/29978] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 09/12/2021] [Accepted: 11/21/2021] [Indexed: 11/13/2022] Open
Abstract
Background Platelets are a valuable and perishable blood product. Managing platelet inventory is a demanding task because of short shelf lives and high variation in daily platelet use patterns. Predicting platelet demand is a promising step toward avoiding obsolescence and shortages and ensuring optimal care. Objective The aim of this study is to forecast platelet demand for a given hospital using both a statistical model and a deep neural network. In addition, we aim to calculate the possible reduction in waste and shortage of platelets using said predictions in a retrospective simulation of the platelet inventory. Methods Predictions of daily platelet demand were made by a least absolute shrinkage and selection operator (LASSO) model and a recurrent neural network (RNN) with long short-term memory (LSTM). Both models used the same set of 81 clinical features. Predictions were passed to a simulation of the blood inventory to calculate the possible reduction in waste and shortage as compared with historical data. Results From January 1, 2008, to December 31, 2018, the waste and shortage rates for platelets were 10.1% and 6.5%, respectively. In simulations of platelet inventory, waste could be lowered to 4.9% with the LASSO and 5% with the RNN, whereas shortages were 2.1% and 1.7% with the LASSO and RNN, respectively. Daily predictions of platelet demand for the next 2 days had mean absolute percent errors of 25.5% (95% CI 24.6%-26.6%) with the LASSO and 26.3% (95% CI 25.3%-27.4%) with the LSTM (P=.01). Predictions for the next 4 days had mean absolute percent errors of 18.1% (95% CI 17.6%-18.6%) with the LASSO and 19.2% (95% CI 18.6%-19.8%) with the LSTM (P<.001). Conclusions Both models allow for predictions of platelet demand with similar and sufficient accuracy to significantly reduce waste and shortage in a retrospective simulation study. The possible improvements in platelet inventory management are roughly equivalent to US $250,000 per year.
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Affiliation(s)
- Maximilian Schilling
- Institute for Medical Informatics, University Hospital Aachen, RWTH Aachen University, Aachen, Germany
| | - Lennart Rickmann
- Institute for Medical Informatics, University Hospital Aachen, RWTH Aachen University, Aachen, Germany
| | - Gabriele Hutschenreuter
- Institute for Transfusion Medicine, University Hospital Aachen, RWTH Aachen University, Aachen, Germany
| | - Cord Spreckelsen
- Institute of Medical Statistics, Computer and Data Sciences, Jena University Hospital, Friedrich Schiller University, Jena, Germany
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14
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Pérez Aliaga AI, Labata G, Aranda A, Cardoso M, Puente F, Domingo JM, Garcés C. Improvement of Blood Processing and Safety by Automation and Pathogen Reduction Technology. Transfus Med Hemother 2021; 48:290-297. [PMID: 34803572 DOI: 10.1159/000516696] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 04/02/2021] [Indexed: 01/18/2023] Open
Abstract
Introduction The objective of the present study was to describe the experience of the Blood and Tissues Bank of Aragon with the Reveos® Automated Blood Processing System and Mirasol® Pathogen Reduction Technology (PRT) System, comparing retrospectively routine quality data obtained in two different observation periods. Methods Comparing quality data encompassing 6,525 blood components from the period 2007-2012, when the semi-automated buffy coat method was used in routine, with 6,553 quality data from the period 2014-2019, when the Reveos system and subsequently the Mirasol system were implemented in routine. Results Moving from buffy coat to Reveos led to decreased discard rates of whole blood units (1.2 to 0.1%), increased hemoglobin content (48.1 ± 7.6 to 55.4 ± 6.6 g/unit), and hematocrit (58.9 ± 6.5% to 60.0 ± 4.9%) in red blood cell concentrates. Platelet concentrates (PCs) in both periods had similar yields (3.5 ×1011). Whereas in the earlier period, PCs resulted from pooling 5 buffy coats, in the second period 25% of PCs were prepared from 4 interim platelet units. The mean level of factor VIII in plasma was significantly higher with Reveos (92.8 vs. 97.3 IU). Mirasol PRT treatment of PCs reduced expiry rates to 1.2% in 2019. One septic transmission was reported with a non-PRT treated PCs, but none with PRT-treated PCs. Conclusion Automation contributed to standardization, efficiency, and improvement of blood processing. Released resources enabled the effortless implementation of PRT. The combination of both technologies guaranteed the self-sufficiency and improvement of blood safety.
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Affiliation(s)
| | - Gorka Labata
- Technological Institute of Aragón, Zaragoza, Spain
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15
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Abstract
Platelets are commonly transfused either therapeutically or prophylactically to maintain hemostasis. Most platelet transfusions are used to manage patients with hematologic malignancies. Although platelet transfusion guidelines have been published, platelet transfusion practices are still heterogeneous. Platelet transfusion guidelines partly lack recommendations or differ in the platelet threshold recommendations in some clinical situations. This article reviews platelet transfusions focusing on transfusion guidelines and platelet thresholds in different clinical settings.
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Affiliation(s)
- Shan Yuan
- Division of Transfusion Medicine, Department of Pathology, City of Hope National Medical Center, Duarte, CA 91010-3000, USA
| | - Zaher K Otrock
- Division of Transfusion Medicine, Department of Pathology and Laboratory Medicine, Henry Ford Hospital, K6, 2799 West Grand Boulevard, Detroit, MI 48202, USA; Department of Pathology, Wayne State University School of Medicine, Detroit, MI, USA.
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16
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Abstract
The supply of platelets for transfusion is a logistical challenge due to the physiology of platelets and current measures of transfusion performance dictating storage at 22°C and a short product shelf-life (<7 days). Demand for platelets has increased in recent years and changes in the demographics of the population may enhance this further. Many studies have been conducted to understand what the optimal dose and trigger for transfusion should be, mainly in hematology patients who are the largest cohort that receive platelets, mostly to prevent bleeding. Emerging data suggests that for bleeding patients, where immediate hemostasis is a key consideration, the current standard product may not be optimal. Alternative platelet preparation methods/storage options that may improve the hemostatic properties of platelets are under active development. In parallel with research into alternative platelet products that might enhance hemostasis, better measures for assessing bleeding risk and platelet efficacy are needed.
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17
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Liker M, Bojanić I, Plenković F, Lukić M, Tomac G, Raos M, Ćepulić BG. Platelet transfusion practice and related transfusion reactions in a large teaching hospital. Transfus Clin Biol 2021; 29:37-43. [PMID: 34411746 DOI: 10.1016/j.tracli.2021.08.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/07/2021] [Accepted: 08/12/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND Platelet transfusion practice varies widely since many aspects of platelet concentrate (PC) use have not been definitively determined. The objectives of this retrospective study were to present platelet transfusion practice and evaluate PC and patient characteristics, as well as their association with transfusion reaction (TR) rate. MATERIAL AND METHODS Platelet transfusions over a 5-year period were analysed regarding PC characteristics (the ABO and RhD compatibility, product type, and storage duration), patient characteristics (most responsible diagnosis, age, and gender), and TR type. RESULTS A total of 46,351 PCs were transfused: 76.4% whole blood-derived (WBD) and 23.6% single donor apheresis (SDA). Three thousand seven hundred seventy-six patients received platelet transfusions: 24.7% paediatric and 75.3% adult patients, 79.6% outpatients and 20.4% inpatients. As much as 63.1% of all transfused PCs were fresh (stored for≤3 days), 98.0% ABO-identical, and 87.3% of all PCs given to RhD- patients were RhD-. PCs were mainly transfused to haemato-oncology (76.8%) and cardiovascular surgery patients (6.5%). Overall, 84 (0.18%) TRs were reported, with allergic TRs (ATRs) being the most common. Although PC ABO compatibility and storage duration, as well as patient age and gender, showed differences in TR rate, only the use of PCs in platelet additive solution (PAS) showed a statistically significant reduction of TRs (P<0.001). CONCLUSION Transfusion practice at the University Hospital Centre Zagreb resulted in almost all patients receiving ABO and RhD identical PCs, and most of them were fresh PCs. The most important factor affecting the incidence of TRs was platelet storage solution. The use of PAS effectively reduced the rate of TRs, particularly allergic TRs.
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Affiliation(s)
- M Liker
- Clinical Department of Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Kišpatićeva 12, 10000 Zagreb, Croatia.
| | - I Bojanić
- Clinical Department of Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Kišpatićeva 12, 10000 Zagreb, Croatia; University of Applied Health Sciences, Zagreb, Croatia; School of Medicine, University of Zagreb, Croatia
| | - F Plenković
- Clinical Department of Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Kišpatićeva 12, 10000 Zagreb, Croatia
| | - M Lukić
- Clinical Department of Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Kišpatićeva 12, 10000 Zagreb, Croatia
| | - G Tomac
- Clinical Department of Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Kišpatićeva 12, 10000 Zagreb, Croatia
| | - M Raos
- Clinical Department of Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Kišpatićeva 12, 10000 Zagreb, Croatia; University of Applied Health Sciences, Zagreb, Croatia
| | - B G Ćepulić
- Clinical Department of Transfusion Medicine and Transplantation Biology, University Hospital Centre Zagreb, Kišpatićeva 12, 10000 Zagreb, Croatia; University of Applied Health Sciences, Zagreb, Croatia; School of Medicine, University of Zagreb, Croatia; Department of Health Studies, University of Split, Croatia
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18
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Chai KL, Wood EM. What is clinically significant bleeding? Transfusion 2021; 61:340-343. [PMID: 33616956 DOI: 10.1111/trf.16277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 01/09/2021] [Indexed: 01/19/2023]
Affiliation(s)
- Khai Li Chai
- Transfusion Research Unit, School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.,Department of Clinical Haematology, Monash Health, Clayton, Victoria, Australia
| | - Erica M Wood
- Transfusion Research Unit, School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.,Department of Clinical Haematology, Monash Health, Clayton, Victoria, Australia
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19
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McSporran W, Pattison NA. A qualitative exploration of the factors influencing the decision to transfuse elective platelets in cancer care. Eur J Cancer Care (Engl) 2021; 30:e13407. [PMID: 33728736 DOI: 10.1111/ecc.13407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 09/29/2020] [Accepted: 11/27/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To explore factors contributing to decisions to transfuse platelets in cancer care outside guidelines using case study methods. METHODS Two case studies were examined, using instrumental case study methodology, to qualitatively explore factors that influence the decision to transfuse platelets. Interviews (n=10) were conducted around cases in haematology and critical care. In-depth review of documentary evidence was undertaken and propositions were developed to provide rigour during the investigation. Thematic analysis and triangulation of documents was undertaken to find specific factors, and propositions analysed, as per instrumental case study methods. RESULTS Both cases emphasised how patient complexity, and individual response to platelet administration, was an influencing factor. Other themes included uncertainty of clinical situations coupled with uncertainty about platelet availability. Other factors worthy of further investigation include the concept of professional safety and the trustworthiness of platelet thresholds against platelet monitoring for bleeding episodes. CONCLUSION The findings indicated several factors influence decisions to transfuse, including clinical context, and individual ability to trust guidelines and assume any perceived risks.
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Affiliation(s)
| | - Natalie A Pattison
- University of Hertfordshire, Hatfield, UK.,East and North Herts NHS Trust, Stevenage, Hatfield, UK
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20
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Zhao J, Gabriel E, Norda R, Höglund P, Baden L, Diedrich BA, Marits P, Enoksson SL, Gansner JM, Kaufman R, Dickman PW, Edgren G. Frequent platelet donation is associated with lymphopenia and risk of infections: A nationwide cohort study. Transfusion 2021; 61:464-473. [PMID: 33186486 PMCID: PMC7894559 DOI: 10.1111/trf.16175] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/25/2020] [Accepted: 09/25/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Recently, plateletpheresis donations using a widely used leukoreduction system (LRS) chamber have been associated with T-cell lymphopenia. However, clinical health consequences of plateletpheresis-associated lymphopenia are still unknown. STUDY DESIGN AND METHODS A nationwide cohort study using the SCANDAT3-S database was conducted with all platelet- and plasmapheresis donors in Sweden between 1996 and 2017. A Cox proportional hazards model, using donations as time-dependent exposures, was used to assess the risk of infections associated with plateletpheresis donations using an LRS chamber. RESULTS A total of 74 408 apheresis donors were included. Among donors with the same donation frequency, plateletpheresis donors using an LRS chamber were at an increased risk of immunosuppression-related infections and common bacterial infections in a dose-dependent manner. While very frequent donors and infections were rare in absolute terms resulting in wide confidence intervals (CIs), the increased risk was significant starting at one-third or less of the allowed donation frequency in a 10-year exposure window, with hazard ratios reaching 10 or more. No plateletpheresis donors that used an LRS chamber experienced a Pneumocystis jirovecii, aspergillus, disseminated mycobacterial, or cryptococcal infection. In a subcohort (n = 42), donations with LRS were associated with low CD4+ T-cell counts (Pearson's R = -0.41; 95% CI, - 0.63 to -0.12). CONCLUSION Frequent plateletpheresis donation using an LRS chamber was associated with CD4+ T-cell lymphopenia and an increased risk of infections. These findings suggest a need to monitor T-lymphocyte counts in frequent platelet donors and to conduct future investigations of long-term donor health and for regulators to consider steps to mitigate lymphodepletion in donors.
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Affiliation(s)
- Jingcheng Zhao
- Department of Medicine Solna, Clinical Epidemiology DivisionKarolinska InstitutetStockholmSweden
| | - Erin Gabriel
- Department of Medical Epidemiology and BiostatisticsKarolinska InstitutetStockholmSweden
| | - Rut Norda
- Department of Immunology, Genetics and PathologyUppsala UniversityUppsalaSweden
| | - Petter Höglund
- Department of Medicine Huddinge, Center for Hematology and Regnerative Medicine (HERM)Karolinska InstitutetStockholmSweden
- Department of Clinical Immunology and Transfusion MedicineKarolinska University HospitalStockholmSweden
| | - Lindsey Baden
- Division of Infectious DiseasesBrigham and Women's Hospital, Harvard Medical SchoolBostonMassachusettsUSA
| | - Beatrice A. Diedrich
- Department of Clinical Immunology and Transfusion MedicineKarolinska University HospitalStockholmSweden
- Department of Clinical Science, Intervention and Technology (CLINTEC)Karolinska InstitutetStockholmSweden
| | - Per Marits
- Department of Clinical Immunology and Transfusion MedicineKarolinska University HospitalStockholmSweden
- Department of Clinical Science, Intervention and Technology (CLINTEC)Karolinska InstitutetStockholmSweden
| | - Sara L. Enoksson
- Department of Clinical Immunology and Transfusion MedicineKarolinska University HospitalStockholmSweden
- Department of Clinical Science, Intervention and Technology (CLINTEC)Karolinska InstitutetStockholmSweden
| | - John M. Gansner
- Hematology DivisionBrigham and Women's HospitalBostonMassachusettsUSA
| | - Richard Kaufman
- Department of PathologyBrigham and Women's Hospital, Harvard Medical SchoolBostonMassachusettsUSA
| | - Paul W. Dickman
- Department of Medical Epidemiology and BiostatisticsKarolinska InstitutetStockholmSweden
| | - Gustaf Edgren
- Department of Medicine Solna, Clinical Epidemiology DivisionKarolinska InstitutetStockholmSweden
- Department of CardiologySödersjukhusetStockholmSweden
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Martínez-Botía P, Acebes-Huerta A, Seghatchian J, Gutiérrez L. On the Quest for In Vitro Platelet Production by Re-Tailoring the Concepts of Megakaryocyte Differentiation. ACTA ACUST UNITED AC 2020; 56:medicina56120671. [PMID: 33287459 PMCID: PMC7761839 DOI: 10.3390/medicina56120671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 11/26/2020] [Accepted: 11/30/2020] [Indexed: 12/14/2022]
Abstract
The demand of platelet transfusions is steadily growing worldwide, inter-donor variation, donor dependency, or storability/viability being the main contributing factors to the current global, donor-dependent platelet concentrate shortage concern. In vitro platelet production has been proposed as a plausible alternative to cover, at least partially, the increasing demand. However, in practice, such a logical production strategy does not lack complexity, and hence, efforts are focused internationally on developing large scale industrial methods and technologies to provide efficient, viable, and functional platelet production. This would allow obtaining not only sufficient numbers of platelets but also functional ones fit for all clinical purposes and civil scenarios. In this review, we cover the evolution around the in vitro culture and differentiation of megakaryocytes into platelets, the progress made thus far to bring the culture concept from basic research towards good manufacturing practices certified production, and subsequent clinical trial studies. However, little is known about how these in vitro products should be stored or whether any safety measure should be implemented (e.g., pathogen reduction technology), as well as their quality assessment (how to isolate platelets from the rest of the culture cells, debris, microvesicles, or what their molecular and functional profile is). Importantly, we highlight how the scientific community has overcome the old dogmas and how the new perspectives influence the future of platelet-based therapy for transfusion purposes.
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Affiliation(s)
- Patricia Martínez-Botía
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain; (P.M.-B.); (A.A.-H.)
- Department of Medicine, University of Oviedo, 33003 Oviedo, Spain
| | - Andrea Acebes-Huerta
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain; (P.M.-B.); (A.A.-H.)
| | - Jerard Seghatchian
- International Consultancy in Strategic Safety/Quality Improvements of Blood-Derived Bioproducts and Suppliers Quality Audit/Inspection, London NW3 3AA, UK;
| | - Laura Gutiérrez
- Platelet Research Lab, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain; (P.M.-B.); (A.A.-H.)
- Department of Medicine, University of Oviedo, 33003 Oviedo, Spain
- Correspondence:
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22
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Yang J, Luan J, Shen Y, Chen B. Developments in the production of platelets from stem cells (Review). Mol Med Rep 2020; 23:7. [PMID: 33179095 PMCID: PMC7673345 DOI: 10.3892/mmr.2020.11645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 10/13/2020] [Indexed: 01/01/2023] Open
Abstract
Platelets are small pieces of cytoplasm that have become detached from the cytoplasm of mature megakaryocytes (MKs) in the bone marrow. Platelets modulate vascular system integrity and serve important role, particularly in hemostasis. With the rapid development of clinical medicine, the demand for platelet transfusion as a life‑saving intervention increases continuously. Stem cell technology appears to be highly promising for transfusion medicine, and the generation of platelets from stem cells would be of great value in the clinical setting. Furthermore, several studies have been undertaken to investigate the potential of producing platelets from stem cells. Initial success has been achieved in terms of the yields and function of platelets generated from stem cells. However, the requirements of clinical practice remain unmet. The aim of the present review was to focus on several sources of stem cells and factors that induce MK differentiation. Updated information on current research into the genetic regulation of megakaryocytopoiesis and platelet generation was summarized. Additionally, advanced strategies of platelet generation were reviewed and the progress made in this field was discussed.
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Affiliation(s)
- Jie Yang
- Department of Hematology and Oncology, School of Medicine, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Jianfeng Luan
- Jinling Hospital Department of Blood Transfusion, School of Medicine, Nanjing University, Nanjing, Jiangsu 210002, P.R. China
| | - Yanfei Shen
- Medical School, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Baoan Chen
- Department of Hematology and Oncology, School of Medicine, Zhongda Hospital, Southeast University, Nanjing, Jiangsu 210009, P.R. China
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23
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Stubbs JR, Homer MJ, Silverman T, Cap AP. The current state of the platelet supply in the US and proposed options to decrease the risk of critical shortages. Transfusion 2020; 61:303-312. [PMID: 33098328 DOI: 10.1111/trf.16140] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/22/2022]
Abstract
Due to circumstances such as increased demand and an aging donor pool, the likelihood of critical platelet shortages is increasing. The platelet supply could be improved through the expansion of the donor pool, the identification and sustained utilization of high-quality donors, and changes in component processing and storage that result in a longer platelet shelf-life. Refrigerated platelets, stored at 1° to 6°C, have the potential to improve patient safety by decreasing the risk of bacterial contamination while concurrently allowing for a longer storage period (eg, 14 days) and improved hemostatic effectiveness in actively bleeding patients. An approach utilizing remuneration of apheresis platelet donors combined with pathogen reduction of the platelet components could be used as a means to increase the donor pool and identify and sustain safe, reliable, high-quality donors. Remuneration might provide an incentive for underutilized populations (eg, individuals <30 years old) to enter the apheresis platelet donor population resulting in a significant expansion of the platelet donor pool. Over time, approaches such as the use of refrigerated platelets, platelet donor remuneration, and the application of pathogen reduction technology, might serve to attract a large, reliable, and safe donor base that provides platelet collections with high yields, longer shelf-lives and, excellent hemostatic function.
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Affiliation(s)
- James R Stubbs
- Division of Transfusion Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Mary J Homer
- Department of Health and Human Services, Biomedical Advanced Research and Development Authority (BARDA), Washington, DC, USA
| | - Toby Silverman
- Department of Health and Human Services, Biomedical Advanced Research and Development Authority (BARDA), Washington, DC, USA
| | - Andrew P Cap
- Division of Transfusion Medicine, Department of Laboratory Medicine and Pathology, US Army Institute of Surgical Research and Uniformed Services University, JBSA-FT Sam Houston, Texas, USA
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24
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Guan X, Wang L, Wang H, Wang H, Dai W, Jiang Y. Good Manufacturing Practice-Grade of Megakaryocytes Produced by a Novel Ex Vivo Culturing Platform. Clin Transl Sci 2020; 13:1115-1126. [PMID: 33030809 PMCID: PMC7719378 DOI: 10.1111/cts.12788] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 02/22/2020] [Indexed: 12/16/2022] Open
Abstract
Ex vivo (EV)‐derived megakaryocytes (MKs) have shown great promise as a substitute for platelets in transfusion medicine to alleviate a severe shortage of donor‐platelets. Challenges remain that include poor efficiency, a limited scale of production, and undefined short‐term storage conditions of EV‐derived MKs. This study aims to develop a high‐efficiency system for large‐scale production of Good Manufacturing Practice (GMP)‐grade MKs and determine the short‐term storage condition for the MKs. A roller‐bottle culture system was introduced to produce GMP‐grade MKs from small‐molecule/cytokine cocktail expanded hematopoietic stem cells. Various buffer systems and temperatures for the short‐term storage of MKs were assessed by cell viability, biomarker expression, and DNA ploidy levels. MKs stored for 24 hours were transplanted into sublethally irradiated nonobese diabetic/severe combined immunodeficient (NOD/SCID) mice to confirm their platelet‐releasing and tissue‐homing ability in vivo. A yield of ~ 2.5 × 104 CD41a+/CD42b+ MKs with purity of ~ 80% was achieved from one original cord blood CD34+ cell. Compared with the static culture, the roller‐bottle culture system significantly enhanced megakaryopoiesis, as shown by the cell size, DNA ploidy, and megakaryopoiesis‐related gene expression. The optimal storage condition for the MKs was defined as normal saline with 10% human serum albumin at 22℃. Stored MKs were capable of rapidly producing functional platelets and largely distributing in the lungs of NOD/SCID mice. The novel development of efficient production and storage system for GMP‐grade MKs represents a significant step toward application of these MKs in the clinic.
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Affiliation(s)
- Xin Guan
- Biopharmaceutical R&D Center, Chinese Academy of Medical Sciences & Peking Union Medical College, Suzhou, China.,Biopharmagen Corporation, Suzhou, China
| | - Lan Wang
- Biopharmaceutical R&D Center, Chinese Academy of Medical Sciences & Peking Union Medical College, Suzhou, China
| | - Hanlu Wang
- Biopharmaceutical R&D Center, Chinese Academy of Medical Sciences & Peking Union Medical College, Suzhou, China.,Biopharmagen Corporation, Suzhou, China
| | - Huihui Wang
- Biopharmaceutical R&D Center, Chinese Academy of Medical Sciences & Peking Union Medical College, Suzhou, China.,Biopharmagen Corporation, Suzhou, China
| | - Wei Dai
- Department of Environmental Medicine, NYU Langone Medical Center, Tuxedo, New York, USA
| | - Yongping Jiang
- Biopharmaceutical R&D Center, Chinese Academy of Medical Sciences & Peking Union Medical College, Suzhou, China.,Biopharmagen Corporation, Suzhou, China
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25
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Apte G, Börke J, Rothe H, Liefeith K, Nguyen TH. Modulation of Platelet-Surface Activation: Current State and Future Perspectives. ACS APPLIED BIO MATERIALS 2020; 3:5574-5589. [PMID: 35021790 DOI: 10.1021/acsabm.0c00822] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Modulation of platelet-surface activation is important for many biomedical applications such as in vivo performance, platelet storage, and acceptance of an implant. Reducing platelet-surface activation is challenging because they become activated immediately after short contact with nonphysiological surfaces. To date, controversies and open questions in the field of platelet-surface activation still remain. Here, we review state-of-the-art approaches in inhibiting platelet-surface activation, mainly focusing on modification, patterning, and methodologies for characterization of the surfaces. As a future perspective, we discuss how the combination of biochemical and physiochemical strategies together with the topographical modulations would assist in the search for an ideal nonthrombogenic surface.
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26
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Moracchini J, Seigeot A, Angelot-Delettre F, Vienot A, Aubry R, Daguindau É, Deconinck E, Frache S, Tiberghien P. Platelet transfusions in haematologic malignancies in the last six months of life. Vox Sang 2020; 116:425-433. [PMID: 32790960 DOI: 10.1111/vox.12986] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 07/10/2020] [Accepted: 07/14/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND OBJECTIVES Practices in end-of-life platelet transfusions in haematologic malignancies are variable. Our aim was to describe the platelet transfusion burden and parameters linked to this indication in such a setting and thereby contribute to defining optimal practices. MATERIALS AND METHODS From July 2015 to December 2016, all consecutive deceased adult patients with a haematologic malignancy receiving a platelet transfusion in the last 6 months of their life from the Etablissement Français du Sang Bourgogne Franche-Comté were included retrospectively. The outcome criteria were changes in the number of platelet transfusions, percent platelet recovery, platelet transfusion interval, reported bleeding with its grade and recipient adverse events in the last 6 months of life. RESULTS Among the 1125 patients monitored, 119 were included in our study. Bleeding prophylaxis (versus treatment) was the reason for 55% of transfusions. 18% of platelet concentrates (n = 1999) were transfused during the last two weeks of life. As death approached, the transfusion and haemorrhage burden increased (P < 0·0001 in both cases), whereas platelet recovery and transfusion interval decreased (P = 0·02 in both cases). Recipient adverse events were rare (0·6%) and of minor severity. CONCLUSION In end-of-life transfused patients with haematologic malignancies, approaching death is associated with an increased number of platelet transfusions and bleeding events, while platelet recovery and transfusion intervals are reduced. Such findings, together with further evaluations, may contribute to informing best practices for these patients.
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Affiliation(s)
| | | | - Fanny Angelot-Delettre
- EFS Bourgogne Franche Comté, Besançon, France.,INSERM, EFS BFC, UMR1098 RIGHT, Univ. Bourgogne Franche-Comté, Besançon, France
| | | | - Régis Aubry
- Département de Soins Palliatifs, Besançon, France
| | - Étienne Daguindau
- Service d'Hématologie Clinique, Besançon, France.,INSERM, EFS BFC, UMR1098 RIGHT, Univ. Bourgogne Franche-Comté, Besançon, France
| | - Eric Deconinck
- Service d'Hématologie Clinique, Besançon, France.,INSERM, EFS BFC, UMR1098 RIGHT, Univ. Bourgogne Franche-Comté, Besançon, France
| | | | - Pierre Tiberghien
- EFS Bourgogne Franche Comté, Besançon, France.,INSERM, EFS BFC, UMR1098 RIGHT, Univ. Bourgogne Franche-Comté, Besançon, France
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27
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Flint AWJ, Bailey M, Reid CM, Smith JA, Tran L, Wood EM, McQuilten ZK, Reade MC. Preoperative identification of cardiac surgery patients at risk of receiving a platelet transfusion: The Australian Cardiac Surgery Platelet Transfusion (
ACSePT
) risk prediction tool. Transfusion 2020; 60:2272-2283. [DOI: 10.1111/trf.15990] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 06/01/2020] [Accepted: 06/11/2020] [Indexed: 12/21/2022]
Affiliation(s)
- Andrew W. J. Flint
- Transfusion Research Unit, Department of Epidemiology and Preventive Medicine Monash University Melbourne Australia
- The Australian and New Zealand Intensive Care Research Centre (ANZIC‐RC), School of Public Health and Preventive Medicine Monash University Melbourne Australia
- Royal Australian Navy Australia
- Intensive Care Unit Royal Darwin Hospital Tiwi Northern Territory Australia
| | - Michael Bailey
- The Australian and New Zealand Intensive Care Research Centre (ANZIC‐RC), School of Public Health and Preventive Medicine Monash University Melbourne Australia
| | - Christopher M. Reid
- School of Public Health and Preventive Medicine Monash University Melbourne Australia
- School of Public Health Curtin University Perth Australia
- Centre of Cardiovascular Research and Education in Therapeutics (CCRET), School of Public Health and Preventive Medicine Monash University Melbourne Australia
| | - Julian A. Smith
- Monash Health Clayton Victoria Australia
- Department of Surgery (School of Clinical Sciences at Monash Health) Monash University and Department of Cardiothoracic Surgery, Monash Health Clayton Victoria Australia
- Chairman, Research Committee Australian and New Zealand Society of Cardiac and Thoracic Surgeons (ANZSCTS); Cardiac Surgery Database
| | - Lavinia Tran
- School of Public Health and Preventive Medicine Monash University Melbourne Australia
- Centre of Cardiovascular Research and Education in Therapeutics (CCRET), School of Public Health and Preventive Medicine Monash University Melbourne Australia
| | - Erica M. Wood
- Transfusion Research Unit, Department of Epidemiology and Preventive Medicine Monash University Melbourne Australia
- Monash Health Clayton Victoria Australia
| | - Zoe K. McQuilten
- Transfusion Research Unit, Department of Epidemiology and Preventive Medicine Monash University Melbourne Australia
- The Australian and New Zealand Intensive Care Research Centre (ANZIC‐RC), School of Public Health and Preventive Medicine Monash University Melbourne Australia
- Monash Health Clayton Victoria Australia
| | - Michael C. Reade
- The Australian and New Zealand Intensive Care Research Centre (ANZIC‐RC), School of Public Health and Preventive Medicine Monash University Melbourne Australia
- Joint Health Command Australian Defence Force Canberra Australia
- Faculty of Medicine University of Queensland Brisbane Australia
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28
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Generation and characterization of HLA-universal platelets derived from induced pluripotent stem cells. Sci Rep 2020; 10:8472. [PMID: 32439978 PMCID: PMC7242456 DOI: 10.1038/s41598-020-65577-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 04/22/2020] [Indexed: 12/11/2022] Open
Abstract
Platelet demand has increased around the world. However, the inadequacy of donors, the risk of transfusion-transmitted infections and associated reactions, and the refractory nature of platelet transfusions are among the limitations of allogeneic platelet transfusions. To alleviate these problems, we propose generating platelets in a laboratory that do not induce alloimmunity to human leukocyte antigen (HLA) class I, which is a major cause of immune reaction in platelet transfusion refractoriness. Induced pluripotent stem cells (iPSCs) were generated from peripheral blood mononuclear cells (PBMCs) of a healthy Thai woman. We then knocked out the β2-microglobulin (β2m) gene in the cells using paired CRISPR/Cas9 nickases and sequentially differentiated the cells into haematopoietic stem cells (HSCs), megakaryocytes (MKs) and platelets. Silencing of HLA class I expression was observed on the cell surface of β2m-knockout iPSCs, iPSC-derived HSCs, MKs and platelets. The HLA-universal iPSC-derived platelets were shown to be activated, and they aggregated after stimulation. In addition, our in vivo platelet survival experiments demonstrated that human platelets were detectable at 2 and 24 hours after injecting the β2m-KO MKs. In summary, we successfully generated functional iPSC-derived platelets in vitro without HLA class I expression by knocking out the β2m gene using paired CRISPR/Cas9 nickases.
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29
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Newland A, Bentley R, Jakubowska A, Liebman H, Lorens J, Peck-Radosavljevic M, Taieb V, Takami A, Tateishi R, Younossi ZM. A systematic literature review on the use of platelet transfusions in patients with thrombocytopenia. ACTA ACUST UNITED AC 2020; 24:679-719. [PMID: 31581933 DOI: 10.1080/16078454.2019.1662200] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Objective: Investigate globally, current treatment patterns, benefit-risk assessments, humanistic, societal and economic burden of platelet transfusion (PT). Methods: Publications from 1998 to June 27, 2018 were identified, based on databases searches including MEDLINE®; Embase and Cochrane Database of Systematic Reviews. Data from studies meeting pre-specified criteria were extracted and validated by independent reviewers. Data were obtained for efficacy and safety from randomized controlled trials (RCTs); data for epidemiology, treatment patterns, effectiveness, safety, humanistic and societal burden from real-world evidence (RWE) studies; and economic data from both. Results: A total of 3425 abstracts, 194 publications (190 studies) were included. PT use varied widely, from 0%-100% of TCP patients; 1.7%-24.5% in large studies (>1000 patients). Most were used prophylactically rather than therapeutically. 5 of 43 RCTs compared prophylactic PT with no intervention, with mixed results. In RWE studies PT generally increased platelet count (PC). This increase varied by patient characteristics and hence did not always translate into a clinically significant reduction in bleeding risk. Safety concerns included infection risk, alloimmunization and refractoriness with associated cost burden. Discussion: In RCTs and RWE studies there was significant heterogeneity in study design and outcome measures. In RWE studies, patients receiving PT may have been at higher risk than those not receiving PT creating potential bias. There were limited data on humanistic and societal burden. Conclusion: Although PTs are used widely for increasing PC in TCP, it is important to understand the limitations of PTs, and to explore the use of alternative treatment options where available.
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Affiliation(s)
- Adrian Newland
- Barts Health National Health Service (NHS) Trust , London , UK
| | | | | | - Howard Liebman
- Jane Anne Nohl Division of Hematology, USC Norris Cancer Hospital , Los Angeles , CA , USA
| | | | - Markus Peck-Radosavljevic
- Department of Gastroenterology & Hepatology, Endocrinology and Nephrology, Klinikum Klagenfurt , Klagenfurt , Austria.,Division of Gastroenterology & Hepatology, Department of Internal Medicine III, Medical University of Vienna , Vienna , Austria
| | | | - Akiyoshi Takami
- Department of Internal Medicine, Division of Hematology, Aichi Medical University School of Medicine , Nagakute , Japan
| | - Ryosuke Tateishi
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo , Tokyo , Japan
| | - Zobair M Younossi
- Department of Medicine, Inova Fairfax Hospital , Falls Church , VA , USA
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30
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Noulsri E, Lerdwana S. Affordable, Reliable Dual-Platform Approach to Quantitating Phosphatidylserine-Exposing Platelets in Platelet Components. Lab Med 2020; 51:186-192. [PMID: 31278411 DOI: 10.1093/labmed/lmz048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE To compare the number of phosphatidylserine (PS)-exposing platelets obtained using the dual-platform approach and bead-based flow cytometry. METHODS Platelets were enumerated using the ADVIA 2010i instrument (Siemens AG). The numbers and percentages of PS-exposing platelets in 175 platelet products were determined using a FACSCalibur flow cytometer (Becton, Dickinson and Company) and counting beads. RESULTS Our results showed good correlation (r2 = 0.96; P <.001) between the PS-exposing platelets obtained using counting beads and the dual-platform approach. The results of Bland-Altman analysis showed a bias of +46,449 cells per µL and a limit of agreement (LOA) from -197,863 to 290,762 cells per µL. Also, 8 measurements (5.0%) revealed a number of PS-exposing platelets outside the LOA ranges. Further, 21 measurements (12.0%) revealed greater than 2-fold changes in the number of PS-exposing platelets. CONCLUSIONS The results suggest that the dual-platform approach is affordable and reliable for quantitating PS-exposing platelets as part of monitoring the quality of platelet products.
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Affiliation(s)
- Egarit Noulsri
- Research Division, Mahidol University, Bangkok, Thailand
| | - Surada Lerdwana
- Division of Instruments for Research, Office for Research and Development, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
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31
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Platelet Biochemistry and Morphology after Cryopreservation. Int J Mol Sci 2020; 21:ijms21030935. [PMID: 32023815 PMCID: PMC7036941 DOI: 10.3390/ijms21030935] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/24/2020] [Accepted: 01/29/2020] [Indexed: 12/25/2022] Open
Abstract
Platelet cryopreservation has been investigated for several decades as an alternative to room temperature storage of platelet concentrates. The use of dimethylsulfoxide as a cryoprotectant has improved platelet storage and cryopreserved concentrates can be kept at −80 °C for two years. Cryopreserved platelets can serve as emergency backup to support stock crises or to disburden difficult logistic areas like rural or military regions. Cryopreservation significantly influences platelet morphology, decreases platelet activation and severely abrogates platelet aggregation. Recent data indicate that cryopreserved platelets have a procoagulant phenotype because thrombin and fibrin formation kicks in earlier compared to room temperature stored platelets. This happens both in static and hydrodynamic conditions. In a clinical setting, low 1-h post transfusion recoveries of cryopreserved platelets represent fast clearance from circulation which may be explained by changes to the platelet GPIbα receptor. Cryopreservation splits the concentrate in two platelet subpopulations depending on GPIbα expression levels. Further research is needed to unravel its physiological importance. Proving clinical efficacy of cryopreserved platelets is difficult because of the heterogeneity of indications and the ambiguity of outcome measures. The procoagulant character of cryopreserved platelets has increased interest for use in trauma stressing the need for double-blinded randomized clinical trials in actively bleeding patients.
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32
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Flint AW, McQuilten ZK, Irwin G, Rushford K, Haysom HE, Wood EM. Is Platelet Expiring Out of Date? A Systematic Review. Transfus Med Rev 2019; 34:42-50. [PMID: 31685352 DOI: 10.1016/j.tmrv.2019.08.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 08/16/2019] [Accepted: 08/29/2019] [Indexed: 10/25/2022]
Abstract
Current platelet concentrates are perishable blood products with short shelf lives. Combined with often unpredictable demand, this results in platelet inventory management problems, manifested by high rates of outdating frequently reported at 10% to 20%, and sometimes inadequate clinical supply. The objective of this study was to critically review the published methodologies on measures to reduce platelet outdating rates, in order to determine how platelet outdating and availability can be improved. We performed a systematic review of journal articles published in English to May 2019 identified from MEDLINE, with reported methods to improve platelet inventory outdating rates and availability. The complexity of each methodology was scored based on whether a typical blood bank manager could design, implement and run a platelet outdating program based on the methodology. Twenty-four relevant citations were found-these included 8 citations employing operational research (OR) methodologies, 7 evaluation/best practice, 6 simulation and 3 forecasting. Over half the included studies have been published within the last decade. The citations reporting the lowest predicted outdating were also the most complex methods. Overall predicted outdating and shortages were less than 4% based on the available data. In conclusion, we found that research interest in platelet inventory management problems has increased in line with platelet demand and methods to assist in reducing outdating rates without increased shortages have been available now for 4 decades; high rates of platelet outdating do however continue to be reported around the world. Developments in platelet preparation and storage, and other new approaches, may assist in addressing this problem.
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Affiliation(s)
- Andrew Wj Flint
- Transfusion Research Unit, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia; The Australian and New Zealand Intensive Care Research Centre (ANZIC-RC), School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia; Royal Australian Navy, Australia
| | - Zoe K McQuilten
- Transfusion Research Unit, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia; The Australian and New Zealand Intensive Care Research Centre (ANZIC-RC), School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia; Monash Health, Melbourne, Australia
| | | | | | - Helen E Haysom
- Transfusion Research Unit, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
| | - Erica M Wood
- Transfusion Research Unit, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia; Monash Health, Melbourne, Australia.
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33
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Hout FM, Middelburg RA, Meer PF, Pors A, Wiersum‐Osselton JC, Schipperus MR, Kerkhoffs J, Bom JG. Effect of storage of platelet concentrates in PAS‐B, PAS‐C, or plasma on transfusion reactions. Transfusion 2019; 59:3140-3145. [DOI: 10.1111/trf.15497] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 04/09/2019] [Accepted: 06/06/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Fabienne M.A. Hout
- Center for Clinical Transfusion ResearchSanquin/LUMC Leiden The Netherlands
- Department of Clinical EpidemiologyLeiden University Medical Center Leiden The Netherlands
| | - Rutger A. Middelburg
- Center for Clinical Transfusion ResearchSanquin/LUMC Leiden The Netherlands
- Department of Clinical EpidemiologyLeiden University Medical Center Leiden The Netherlands
| | - Pieter F. Meer
- Center for Clinical Transfusion ResearchSanquin/LUMC Leiden The Netherlands
| | - Aad Pors
- Center for Clinical Transfusion ResearchSanquin/LUMC Leiden The Netherlands
| | - Johanna C. Wiersum‐Osselton
- Transfusion and Transplantation Reactions in Patients, Dutch National Hemovigilance and Biovigilance Office Leiden The Netherlands
| | - Martin R. Schipperus
- Transfusion and Transplantation Reactions in Patients, Dutch National Hemovigilance and Biovigilance Office Leiden The Netherlands
- Department of HematologyHaga Teaching Hospital The Hague The Netherlands
| | - Jean‐Louis Kerkhoffs
- Center for Clinical Transfusion ResearchSanquin/LUMC Leiden The Netherlands
- Department of HematologyHaga Teaching Hospital The Hague The Netherlands
| | - Johanna G. Bom
- Center for Clinical Transfusion ResearchSanquin/LUMC Leiden The Netherlands
- Department of Clinical EpidemiologyLeiden University Medical Center Leiden The Netherlands
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34
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Scorer TG, Reddoch-Cardenas KM, Thomas KA, Cap AP, Spinella PC. Therapeutic Utility of Cold-Stored Platelets or Cold-Stored Whole Blood for the Bleeding Hematology-Oncology Patient. Hematol Oncol Clin North Am 2019; 33:873-885. [PMID: 31466610 DOI: 10.1016/j.hoc.2019.05.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Bleeding related to thrombocytopenia is common in hematology-oncology patients. Platelets stored at room temperature (RTPs) are the current standard of care. Platelets stored in the cold (CSPs) have enhanced hemostatic function relative to RTPs. CSPs were reported to reduce bleeding in hematology-oncology patients. Recent studies have confirmed the enhanced hemostatic properties of CSPs. CSPs may be the better therapeutic option for this population. CSPs may also offer a preferable immune profile, reduced thrombotic risk, and reduced transfusion-transmitted infection risk. The logistical advantages of CSPs would improve outcomes for many patients who currently cannot access platelet transfusions.
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Affiliation(s)
- Thomas G Scorer
- School of Cellular and Molecular Medicine, University of Bristol, Bristol Royal Infirmary, Research Floor 7, Queens Building, Bristol, BS2 8HW, UK; Centre of Defence Pathology, Royal Centre for Defence Medicine, Birmingham, UK.
| | - Kristin M Reddoch-Cardenas
- Coagulation and Blood Research, U.S. Army Institute of Surgical Research, 3698 Chambers Pass, BLDG 3610, JBSA-Fort Sam Houston, San Antonio, TX 78234, USA
| | - Kimberly A Thomas
- Department of Pediatrics, Division of Pediatric Critical Care Medicine, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA
| | - Andrew P Cap
- Coagulation and Blood Research, U.S. Army Institute of Surgical Research, 3698 Chambers Pass, BLDG 3610, JBSA-Fort Sam Houston, San Antonio, TX 78234, USA
| | - Philip C Spinella
- Department of Pediatrics, Division of Pediatric Critical Care Medicine, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA
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35
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Secular trends in the distribution of allogeneic blood components in Taiwan. J Formos Med Assoc 2019; 118:1369-1374. [PMID: 30928185 DOI: 10.1016/j.jfma.2019.03.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/27/2019] [Accepted: 03/05/2019] [Indexed: 11/20/2022] Open
Abstract
Recent blood distribution profiles for transfusions in Taiwan have not been comprehensively documented. This study aimed to analyze trends in red blood cell (RBC), platelet, and plasma distribution rates, and compares these profiles with those in other countries. The distribution rates of RBC, platelets, and plasma in Taiwan during 2015 were 47.6, 11.1, and 26.8 units per 1000 population, respectively. At least 1.5 and 2.5-fold higher platelet and plasma distribution rates were observed than other selected countries. During 2007-2015, there was no significant change in RBC distribution. However, we observed a significant increase of 0.20 (95% CI: 0.11-0.30) adult doses of platelets, and a significant decrease of 1.69 (95% CI: 1.45-1.93) units of plasma per 1000 population per annum. Seven other countries showed a general significant decreasing trend of RBC distributions. Higher blood distribution rates were observed in Taiwan. Therefore, the adoption of patient blood management is essential.
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Enhancing functional platelet release in vivo from in vitro-grown megakaryocytes using small molecule inhibitors. Blood Adv 2019; 2:597-606. [PMID: 29545255 DOI: 10.1182/bloodadvances.2017010975] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 02/14/2018] [Indexed: 12/17/2022] Open
Abstract
In vitro-grown megakaryocytes for generating platelets may have value in meeting the increasing demand for platelet transfusions. Remaining challenges have included the poor yield and quality of in vitro-generated platelets. We have shown that infusing megakaryocytes leads to intrapulmonary release of functional platelets. A Src kinase inhibitor (SU6656), a Rho-associated kinase inhibitor (Y27632), and an aurora B kinase inhibitor (AZD1152) have been shown to increase megakaryocyte ploidy and in vitro proplatelet release. We now tested whether megakaryocytes generated from CD34+ hematopoietic cells in the presence of these inhibitors could enhance functional platelet yield following megakaryocyte infusion. As expected, all inhibitors increased megakaryocyte ploidy, size, and granularity, but these inhibitors differed in whether they injured terminal megakaryocytes: SU6656 was protective, whereas Y27632 and AZD1152 increased injury. Upon infusion, inhibitor-treated megakaryocytes released threefold to ninefold more platelets per initial noninjured megakaryocyte relative to control, but only SU6656-treated megakaryocytes had a significant increase in platelet yield when calculated based on the number of initial CD34+ cells; this was fourfold over nontreated megakaryocytes. The released platelets from drug-treated, but healthy, megakaryocytes contained similar percentages of young, uninjured platelets that robustly responded to agonists and were well incorporated into a growing thrombus in vivo as controls. These studies suggest that drug screens that select megakaryocytes with enhanced ploidy, cell size, and granularity may include a subset of drugs that can enhance the yield and function of platelets, and may have clinical application for ex vivo-generated megakaryocytes and platelet transfusion.
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37
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Affiliation(s)
- H A Doughty
- Academic Department of Military, Anaesthesia and Critical Care, Birmingham, UK.
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38
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Aubron C, Flint AWJ, Ozier Y, McQuilten Z. Platelet storage duration and its clinical and transfusion outcomes: a systematic review. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2018; 22:185. [PMID: 30077181 PMCID: PMC6091146 DOI: 10.1186/s13054-018-2114-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 07/03/2018] [Indexed: 02/08/2023]
Abstract
Background Platelets (PLTs) are usually stored for up to 5 days prior to transfusion, although in some blood services the storage period is extended to 7 days. During storage, changes occur in both PLT and storage medium, which may lead to PLT activation and dysfunction. The clinical significance of these changes remains uncertain. Methods We performed a systematic review to assess the association between PLT storage time and clinical or transfusion outcomes in patients receiving allogeneic PLT transfusion. We searched studies published in English between January 2000 and July 2017 identified from MEDLINE, Embase, PubMed and the Cochrane Libraries. Results Of the 18 studies identified, five included 4719 critically ill patients (trauma, post-cardiac surgery and a heterogeneous population of critically ill patients) and 13 included 8569 haematology patients. The five studies in critically ill patients were retrospective and did not find any association between PLT storage time when PLTs were stored for up to 5 days and mortality. There was also no association between older PLTs and sepsis in the two largest studies (n = 4008 patients). Of the 13 studies in haematology patients, seven analysed prolonged storage time up to 6.5 or 7 days. Administration of fresh PLTs (less than 2 or 3 days) was associated with a significant increase in corrected count increment (CCI) compared to older PLTs in seven of the eight studies analysing this outcome. One single centre retrospective study found an increase in bleeding events in patients receiving older PLTs. Conclusions PLT storage time does not appear to be associated with clinical outcomes, including bleeding, sepsis or mortality, in critically ill patients or haematology patients. The freshest PLTs (less than 3 days) were associated with a better CCI, although there was no impact on bleeding events, questioning the clinical significance of this association. However, there is an absence of evidence to draw definitive conclusions, especially in critically ill patients. Electronic supplementary material The online version of this article (10.1186/s13054-018-2114-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Cécile Aubron
- The Medical Intensive Care Unit, Centre Hospitalier et Universitaire de Brest - Université de Bretagne Occidentale, Bvd Tanguy Prigent, 29609, Brest Cedex, France. .,The Australian and New Zealand Intensive Care Research Centre, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia.
| | - Andrew W J Flint
- The Australian and New Zealand Intensive Care Research Centre, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia.,Royal Australian Navy, Australian Defence Force, Canberra, Australia
| | - Yves Ozier
- The Department of Anesthesiology, Centre Hospitalier et Universitaire de Brest - Université de Bretagne Occidentale, Brest, France
| | - Zoe McQuilten
- The Australian and New Zealand Intensive Care Research Centre, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia.,The Transfusion Research Unit, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
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39
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Current status of blood 'pharming': megakaryoctye transfusions as a source of platelets. Curr Opin Hematol 2018; 24:565-571. [PMID: 28985194 DOI: 10.1097/moh.0000000000000378] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PURPOSE OF REVIEW Donor-derived platelets have proven to be of hemostatic value in many clinical settings. There is a fear that the need for platelets may outgrow the donor pool in first-world countries. Moreover, there are other challenges with donor platelets that add to the impetus to find an alternative platelet source, especially after the megakaryocyte cytokine thrombopoietin was identified. Megakaryocytes have since been differentiated from numerous cell sources and the observed released platelet-like particles (PLPs) have led to calls to develop such products for clinical use. The development of megakaryocytes from embryonic stem cell also supported the concept of developing nondonor-based platelets. RECENT FINDINGS Several groups have claimed that nondonor-based platelets derived from in-vitro grown megakaryocytes may soon become available to supplement or replace donor-derived products, but their number and quality has been wanting. A possible alternative of directly infusing megakaryocytes that release platelets in the lungs - similar to that recently shown for endogenous megakaryocytes - has been proposed. SUMMARY This present review will describe the present state-of-the-art in generating and delivering nondonor-derived platelets. Progress has been slow, but advances in our ability to generate human megakaryocytes in culture, generate PLPs from these cells, and test the functionality of the resultant platelets in vitro and in vivo have identified important remaining challenges and raised alternative potential solutions.
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40
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van Hout FMA, van der Meer PF, Wiersum-Osselton JC, Middelburg RA, Schipperus MR, van der Bom JG, Kerkhoffs JL. Transfusion reactions after transfusion of platelets stored in PAS-B, PAS-C, or plasma: a nationwide comparison. Transfusion 2018; 58:1021-1027. [PMID: 29405304 DOI: 10.1111/trf.14509] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 11/30/2017] [Accepted: 12/13/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND Platelets (PLTs) stored in PLT additive solution (PAS) are associated with fewer allergic reactions than plasma-stored PLTs. However, earlier studies could not provide conclusive evidence on febrile reactions and did not analyze other transfusion reactions separately due to limited sample size. We therefore compared incidences of all transfusion reactions of PAS-B-PLTs, PAS-C-PLTs, and plasma-PLTs. STUDY DESIGN AND METHODS In this observational study, all transfusion reactions reported to the national hemovigilance office of the Netherlands from 2006 to 2015 were included. RESULTS During the study period, a total of 2407 transfusion reactions after PLT transfusions were reported. In that period 553,267 pooled buffy coat-derived PLT units were issued, of which 83,884 were stored in PAS-B, 45,728 in PAS-C, and 423,655 in plasma. Regarding transfusion-related circulatory overload, transfusion-related acute lung injury, and "other reactions" no significant differences were observed between the PLT products. When PAS-B-PLT transfusions were compared to plasma-PLT transfusions, the overall relative risk (RR; 95% confidence interval [CI]) of transfusion reactions was 0.99 (0.88-1.11); for allergic and febrile nonhemolytic transfusion reactions (FNHTRs) it was 0.66 (0.55-0.80) and 1.54 (1.27-1.86), respectively. When PAS-C-PLTs were compared to plasma-PLTs, the RR (95% CI) was 0.56 (0.46-0.68) for all transfusion reactions, 0.38 (0.28-0.52) for allergic reactions, and 0.82 (0.59-1.13) for FNHTRs. When PAS-C-PLTs were compared to PAS-B-PLTs, for all reactions the RR (95% CI) was 0.56 (0.45-0.70) for allergic reactions 0.58 (0.40-0.82), and for FNHTRs 0.53 (0.37-0.75). CONCLUSIONS PAS-C-PLTs are associated with fewer transfusion reactions compared to plasma-PLTs and compared to PAS-B-PLTs.
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Affiliation(s)
- Fabienne M A van Hout
- Center for Clinical Transfusion Research, Sanquin Research, Leiden, the Netherlands.,Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
| | | | - Johanna C Wiersum-Osselton
- Transfusion and Transplantation Reactions in Patients, Dutch National Hemovigilance and Biovigilance Office, Leiden, the Netherlands
| | - Rutger A Middelburg
- Center for Clinical Transfusion Research, Sanquin Research, Leiden, the Netherlands.,Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Martin R Schipperus
- Transfusion and Transplantation Reactions in Patients, Dutch National Hemovigilance and Biovigilance Office, Leiden, the Netherlands.,Department of Hematology, Haga Teaching Hospital, The Hague, the Netherlands
| | - Johanna G van der Bom
- Center for Clinical Transfusion Research, Sanquin Research, Leiden, the Netherlands.,Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Jean-Louis Kerkhoffs
- Center for Clinical Transfusion Research, Sanquin Research, Leiden, the Netherlands.,Department of Hematology, Haga Teaching Hospital, The Hague, the Netherlands
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41
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Withanawasam TI, Wright S. Advances in transfusion medicine RCPath, November 2016. Transfus Med 2017; 27:401-407. [PMID: 29282811 DOI: 10.1111/tme.12500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 11/22/2017] [Accepted: 12/04/2017] [Indexed: 01/08/2023]
Affiliation(s)
- T I Withanawasam
- National Health Service Blood and Transplant, Bristol, UK.,National Blood Transfusion Service, Colombo, Sri Lanka
| | - S Wright
- National Health Service Blood and Transplant, Bristol, UK
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42
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Big data modeling to predict platelet usage and minimize wastage in a tertiary care system. Proc Natl Acad Sci U S A 2017; 114:11368-11373. [PMID: 29073058 PMCID: PMC5664553 DOI: 10.1073/pnas.1714097114] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In modern hospital systems where complicated, severely ill patient populations are the norm, there is currently no reliable way to forecast the use of perishable medical resources to enable a smart and economic way to deliver optimal patient care. We here demonstrate a statistical model using hospital patient data to quantitatively forecast, days in advance, the need for platelet transfusions. This approach can be leveraged to significantly decrease platelet wastage, and, if adopted nationwide, would save approximately 80 million dollars per year. We believe our approach can be generalized to all other aspects of patient care involving timely delivery of perishable medical resources. Maintaining a robust blood product supply is an essential requirement to guarantee optimal patient care in modern health care systems. However, daily blood product use is difficult to anticipate. Platelet products are the most variable in daily usage, have short shelf lives, and are also the most expensive to produce, test, and store. Due to the combination of absolute need, uncertain daily demand, and short shelf life, platelet products are frequently wasted due to expiration. Our aim is to build and validate a statistical model to forecast future platelet demand and thereby reduce wastage. We have investigated platelet usage patterns at our institution, and specifically interrogated the relationship between platelet usage and aggregated hospital-wide patient data over a recent consecutive 29-mo period. Using a convex statistical formulation, we have found that platelet usage is highly dependent on weekday/weekend pattern, number of patients with various abnormal complete blood count measurements, and location-specific hospital census data. We incorporated these relationships in a mathematical model to guide collection and ordering strategy. This model minimizes waste due to expiration while avoiding shortages; the number of remaining platelet units at the end of any day stays above 10 in our model during the same period. Compared with historical expiration rates during the same period, our model reduces the expiration rate from 10.5 to 3.2%. Extrapolating our results to the ∼2 million units of platelets transfused annually within the United States, if implemented successfully, our model can potentially save ∼80 million dollars in health care costs.
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43
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Flint A, Aubron C, Bailey M, Bellomo R, Pilcher D, Cheng AC, Hegarty C, Reade MC, McQuilten Z. Duration of platelet storage and outcomes of critically ill patients. Transfusion 2017; 57:599-605. [PMID: 28297080 DOI: 10.1111/trf.14056] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 11/03/2016] [Accepted: 11/06/2016] [Indexed: 01/18/2023]
Abstract
BACKGROUND The storage duration of platelet (PLT) units is limited to 5 to 7 days. This study investigates whether PLT storage duration is associated with patient outcomes in critically ill patients. STUDY DESIGN AND METHODS This study was a retrospective analysis of critically ill patients admitted to the intensive care unit (ICU) of two hospitals in Australia who received one or more PLT transfusions from 2008 to 2014. Storage duration was approached in several different ways. Outcome variables were hospital mortality and ICU-acquired infection. Associations between PLT storage duration and outcomes were evaluated using multiple logistic regression and also by Cox regression. RESULTS Among 2250 patients who received one or more PLT transfusions while in the ICU, the storage duration of PLTs was available for 64% of patients (1430). In-hospital mortality was 22.1% and ICU infection rate 7.2%. When comparing patients who received PLTs of a maximum storage duration of not more than 3, 4, or 5 days, there were no significant differences in baseline characteristics. After confounders were adjusted for, the storage duration of PLTs was not independently associated with mortality (4 days vs. ≤3 days, odds ratio [OR] 0.88, 95% confidence interval [CI] 0.59-1.30; 5 days vs. ≤3 days, OR 0.97, 95% CI 0.68-1.37) or infection (4 days vs. ≤3 days, OR 0.71, 95% CI 0.39-1.29; 5 days vs. ≤3 days, OR 1.11, 95% CI 0.67-1.83). Similar results were obtained regardless of how storage duration of PLTs was approached. CONCLUSIONS In this large observational study in a heterogeneous ICU population, storage duration of PLTs was not associated with an increased risk of mortality or infection.
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Affiliation(s)
- Andrew Flint
- The Australian and New Zealand Intensive Care Research Centre.,Royal Australian Navy, Australian Defence Force, Canberra, Australia
| | - Cécile Aubron
- The Australian and New Zealand Intensive Care Research Centre.,The Intensive Care Unit, The Alfred Hospital, Melbourne, Australia.,The Medical Intensive Care Unit, Centre Hospitalier et Universitaire de Brest site La Cavale Blanche-Université de Bretagne Occidentale, Brest, France
| | - Michael Bailey
- The Australian and New Zealand Intensive Care Research Centre
| | - Rinaldo Bellomo
- The Australian and New Zealand Intensive Care Research Centre.,The Intensive Care Unit, The Austin Hospital
| | - David Pilcher
- The Australian and New Zealand Intensive Care Research Centre.,The Intensive Care Unit, The Alfred Hospital, Melbourne, Australia
| | - Allen C Cheng
- The Infectious Disease Department, The Alfred Hospital
| | - Colin Hegarty
- The Transfusion Service of The Austin Hospital, Melbourne, Australia
| | - Michael C Reade
- The Australian and New Zealand Intensive Care Research Centre.,Joint Health Command, Australian Defence Force, Canberra, Australia.,Burns Trauma and Critical Care Research Centre, University of Queensland, Brisbane, Australia
| | - Zoe McQuilten
- The Australian and New Zealand Intensive Care Research Centre.,The Transfusion Research Unit, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
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Al-Ghumlas AK, Al Momen AK, Badri M, Abdel Gader AG. Long-term audit of platelet consumption in a university hospital. Transfus Clin Biol 2017; 24:68-75. [PMID: 28434851 DOI: 10.1016/j.tracli.2017.03.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 03/14/2017] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To determine the long-term trend in platelet consumption in a university hospital. MATERIALS AND METHODS The annual consumption of platelets concentrate (PC) was analyzed over 23 years (1985-2007) in King Khalid University Hospital (KKUH), Riyadh, Saudi Arabia. RESULTS The total 23 years consumption was 100,466 units of PC. Consumption went through 3 phases: the first, 1985-1994: the annual consumption increased from 1706 to 5912 which coincided with the increase in the number of patient admissions; the second, 1994-2003:featured a remarkable drop (48.9%) in annual consumption while patient admission remained stable. There was a concurrent decline in platelet consumption and all-cause mortality/patient. Third phase: 2003-2007, the consumption increased to reach 5642 units/year in 2007. The Department of Medicine consumed (52%), followed by Pediatrics (21%), and General Surgery (16%). CONCLUSION This audit uncovered evidence of inappropriate platelet consumption that reached 48.9% in the period 1994 to 2003, which coincided with widely publicized HIV scare that dominated blood transfusion during that period. We also found evidence suggesting that reducing platelet transfusion could improve patient outcome.
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Affiliation(s)
- A K Al-Ghumlas
- The Coagulation Research Laboratory, Department of Physiology, College of Medicine, King Khalid University Hospital, King Saud University, P.O. Box 2925, 11461 Riyadh, Saudi Arabia.
| | - A K Al Momen
- The Blood Bank, King Khalid University Hospital, King Saud University, Riyadh, Saudi Arabia
| | - M Badri
- Department of Statistics, College of Science and Health Professions, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - A G Abdel Gader
- The Blood Bank, King Khalid University Hospital, King Saud University, Riyadh, Saudi Arabia
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45
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Kreuger AL, Caram-Deelder C, Jacobse J, Kerkhoffs JL, van der Bom JG, Middelburg RA. Effect of storage time of platelet products on clinical outcomes after transfusion: a systematic review and meta-analyses. Vox Sang 2017; 112:291-300. [DOI: 10.1111/vox.12494] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 10/21/2016] [Accepted: 01/05/2017] [Indexed: 12/29/2022]
Affiliation(s)
- A. L. Kreuger
- Center for Clinical Transfusion Research; Sanquin Research; Leiden The Netherlands
- Department of Clinical Epidemiology; Leiden University Medical Center; Leiden The Netherlands
| | - C. Caram-Deelder
- Center for Clinical Transfusion Research; Sanquin Research; Leiden The Netherlands
- Department of Clinical Epidemiology; Leiden University Medical Center; Leiden The Netherlands
| | - J. Jacobse
- Center for Clinical Transfusion Research; Sanquin Research; Leiden The Netherlands
- Department of Clinical Epidemiology; Leiden University Medical Center; Leiden The Netherlands
| | - J.-L. Kerkhoffs
- Center for Clinical Transfusion Research; Sanquin Research; Leiden The Netherlands
- Department of Hematology; Hagaziekenhuis; Den Haag The Netherlands
| | - J. G. van der Bom
- Center for Clinical Transfusion Research; Sanquin Research; Leiden The Netherlands
- Department of Clinical Epidemiology; Leiden University Medical Center; Leiden The Netherlands
| | - R. A. Middelburg
- Center for Clinical Transfusion Research; Sanquin Research; Leiden The Netherlands
- Department of Clinical Epidemiology; Leiden University Medical Center; Leiden The Netherlands
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46
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Estcourt LJ, Birchall J, Allard S, Bassey SJ, Hersey P, Kerr JP, Mumford AD, Stanworth SJ, Tinegate H. Guidelines for the use of platelet transfusions. Br J Haematol 2016; 176:365-394. [DOI: 10.1111/bjh.14423] [Citation(s) in RCA: 266] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Lise J. Estcourt
- NHSBT and Radcliffe Department of Medicine; University of Oxford; Oxford UK
| | - Janet Birchall
- NHSBT and Department of Haematology; North Bristol NHS Trust; Bristol UK
| | - Shubha Allard
- NHSBT and Department of Haematology; Royal London Hospital; London UK
| | - Stephen J. Bassey
- Department of Haematology; Royal Cornwall Hospital Trust; Cornwall UK
| | - Peter Hersey
- Department of Critical Care Medicine & Anaesthesia; City Hospitals Sunderland NHS Foundation Trust; Sunderland UK
| | - Jonathan Paul Kerr
- Department of Haematology; Royal Devon & Exeter NHS Foundation Trust; Exeter UK
| | - Andrew D. Mumford
- School of Cellular and Molecular Medicine; University of Bristol; Bristol UK
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47
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Fedele PL, Polizzotto MN, Grigoriadis G, Waters N, Comande M, Borosak M, Portbury D, Wood EM. Profiling clinical platelet and plasma use to inform blood supply and contingency planning: PUPPY, the prospective utilization of platelets and plasma study. Transfusion 2016; 56:2455-2465. [PMID: 27600298 DOI: 10.1111/trf.13778] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 06/04/2016] [Accepted: 06/05/2016] [Indexed: 12/20/2022]
Abstract
BACKGROUND Demand for platelet (PLT) and plasma transfusions is increasing. Improved clinical supply and contingency planning requires greater understanding of usage profiles and urgency of clinical requirement. STUDY DESIGN AND METHODS This study was a random-sample survey of PLT and plasma units produced in Victoria, Australia, to determine product disposition, recipient demographics, clinical indications for transfusion, and urgency (or "deferability") of need. PLTs and fresh-frozen plasma (FFP) were tagged with a case report form before distribution. RESULTS A total of 1252 PLT and 1837 FFP units were tagged, comprising 8.3 and 13.3% of all products issued during the study period. The fate of 1243 PLT and 1808 FFP units was determined. Of products issued, 72.2% of PLTs and 87.8% of FFP were transfused. Hematologic and oncologic disorders accounted for 63.9% of PLT transfusions, with acute myeloid leukemia alone accounting for 26%. Conversely, surgical patients received the largest proportion of FFP (40.4%), predominantly for cardiothoracic, solid organ transplant, and vascular surgery. Approximately 15% of PLT transfusions and 35% of plasma transfusions were required within 1 hour, and 80% of PLT transfusions and 90% of FFP transfusions were required within 24 hours. Wastage rates were higher in regional blood banks. CONCLUSION The PUPPY study is a comprehensive and detailed population-based assessment of PLT and plasma usage, including urgency of use. It identifies specific clinical areas with high demand for PLT and FFP transfusion and demonstrates the high urgency of need for both products. These data inform clinical supply and contingency planning activities.
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Affiliation(s)
- Pasquale L Fedele
- The Australian Red Cross Blood Service, Melbourne, Australia.
- Monash Haematology, Parkville.
- Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.
| | - Mark N Polizzotto
- The Australian Red Cross Blood Service, Melbourne, Australia
- Kirby Institute for Infection and Immunity, University of New South Wales
- Department of Haematology, St Vincent's Hospital, Sydney, Australia
| | - George Grigoriadis
- The Australian Red Cross Blood Service, Melbourne, Australia
- Monash Haematology, Parkville
- School of Clinical Sciences, Monash Health, Clayton, Australia
| | - Neil Waters
- The Australian Red Cross Blood Service, Melbourne, Australia
- Transfusion Research Unit, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
| | - Mary Comande
- The Australian Red Cross Blood Service, Melbourne, Australia
- Royal Children's Hospital, Parkville, Australia
| | - Marija Borosak
- The Australian Red Cross Blood Service, Melbourne, Australia
- Department of Haematology, Eastern Health, Box Hill, Australia
| | - David Portbury
- The Australian Red Cross Blood Service, Melbourne, Australia
| | - Erica M Wood
- The Australian Red Cross Blood Service, Melbourne, Australia.
- Monash Haematology, Parkville.
- School of Clinical Sciences, Monash Health, Clayton, Australia.
- Transfusion Research Unit, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia.
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48
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Caram-Deelder C, Kreuger AL, Jacobse J, van der Bom JG, Middelburg RA. Effect of platelet storage time on platelet measurements: a systematic review and meta-analyses. Vox Sang 2016; 111:374-382. [DOI: 10.1111/vox.12443] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 07/06/2016] [Accepted: 07/14/2016] [Indexed: 12/29/2022]
Affiliation(s)
- C. Caram-Deelder
- Center for Clinical Transfusion Research; Sanquin Research; Leiden The Netherlands
- Department of Clinical Epidemiology; Leiden University Medical Center; Leiden The Netherlands
| | - A. L. Kreuger
- Center for Clinical Transfusion Research; Sanquin Research; Leiden The Netherlands
- Department of Clinical Epidemiology; Leiden University Medical Center; Leiden The Netherlands
| | - J. Jacobse
- Center for Clinical Transfusion Research; Sanquin Research; Leiden The Netherlands
- Department of Clinical Epidemiology; Leiden University Medical Center; Leiden The Netherlands
| | - J. G. van der Bom
- Center for Clinical Transfusion Research; Sanquin Research; Leiden The Netherlands
- Department of Clinical Epidemiology; Leiden University Medical Center; Leiden The Netherlands
| | - R. A. Middelburg
- Center for Clinical Transfusion Research; Sanquin Research; Leiden The Netherlands
- Department of Clinical Epidemiology; Leiden University Medical Center; Leiden The Netherlands
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49
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Börger AK, Eicke D, Wolf C, Gras C, Aufderbeck S, Schulze K, Engels L, Eiz-Vesper B, Schambach A, Guzman CA, Lachmann N, Moritz T, Martin U, Blasczyk R, Figueiredo C. Generation of HLA-Universal iPSC-Derived Megakaryocytes and Platelets for Survival Under Refractoriness Conditions. Mol Med 2016; 22:274-285. [PMID: 27262025 DOI: 10.2119/molmed.2015.00235] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 05/06/2016] [Indexed: 11/06/2022] Open
Abstract
Platelet (PLT) transfusion is indispensable to maintain homeostasis in thrombocytopenic patients. However, PLT transfusion refractoriness is a common life-threatening condition observed in multitransfused patients. The most frequent immune cause for PLT transfusion refractoriness is the presence of alloantibodies specific for human leukocyte antigen (HLA) class I epitopes. Here, we have silenced the expression of HLA class I to generate a stable HLA-universal induced pluripotent stem cell (iPSC) line that can be used as a renewable cell source for the generation of low immunogenic cell products. The expression of HLA class I was silenced by up to 82% and remained stable during iPSC cultivation. In this study, we have focused on the generation of megakaryocytes (MK) and PLTs from a HLA-universal iPSC source under feeder- and xeno-free conditions. On d 19, differentiation rates of MKs and PLTs with means of 58% and 76% were observed, respectively. HLA-universal iPSC-derived MKs showed polyploidy with DNA contents higher than 4n and formed proPLTs. Importantly, differentiated MKs remained silenced for HLA class I expression. HLA-universal MKs produced functional PLTs. Notably, iPSC-derived HLA-universal MKs were capable to escape antibody-mediated complement- and cellular-dependent cytotoxicity. Furthermore, HLA-universal MKs were able to produce PLTs after in vivo transfusion in a mouse model indicating that they might be used as an alternative to PLT transfusion. Thus, in vitro produced low immunogenic MKs and PLTs may become an alternative to PLT donation in PLT-based therapies and an important component in the management of severe alloimmunized patients.
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Affiliation(s)
- Ann-Kathrin Börger
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany.,REBIRTH Cluster of Excellence, Hannover Medical School, Hannover, Germany
| | - Dorothee Eicke
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany.,REBIRTH Cluster of Excellence, Hannover Medical School, Hannover, Germany
| | - Christina Wolf
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
| | - Christiane Gras
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany.,REBIRTH Cluster of Excellence, Hannover Medical School, Hannover, Germany
| | - Susanne Aufderbeck
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
| | - Kai Schulze
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Lena Engels
- Leibniz Research Laboratories for Biotechnology and Artificial Organs, Hannover, Germany.,REBIRTH Cluster of Excellence, Hannover Medical School, Hannover, Germany
| | - Britta Eiz-Vesper
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
| | - Axel Schambach
- Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany.,REBIRTH Cluster of Excellence, Hannover Medical School, Hannover, Germany
| | - Carlos A Guzman
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Braunschweig, Germany.,REBIRTH Cluster of Excellence, Hannover Medical School, Hannover, Germany
| | - Nico Lachmann
- Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany.,REBIRTH Cluster of Excellence, Hannover Medical School, Hannover, Germany
| | - Thomas Moritz
- Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany.,REBIRTH Cluster of Excellence, Hannover Medical School, Hannover, Germany
| | - Ulrich Martin
- Leibniz Research Laboratories for Biotechnology and Artificial Organs, Hannover, Germany.,REBIRTH Cluster of Excellence, Hannover Medical School, Hannover, Germany
| | - Rainer Blasczyk
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany.,REBIRTH Cluster of Excellence, Hannover Medical School, Hannover, Germany
| | - Constança Figueiredo
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany.,REBIRTH Cluster of Excellence, Hannover Medical School, Hannover, Germany
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50
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Pérez Vaquero MÁ, Gorria C, Lezaun M, López FJ, Monge J, Eguizabal C, Vesga MA. Optimization of the management of platelet concentrate stocks in the Basque Country using mathematical simulation. Vox Sang 2016; 110:369-75. [DOI: 10.1111/vox.12377] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 11/03/2015] [Accepted: 12/10/2015] [Indexed: 12/01/2022]
Affiliation(s)
- M. Á. Pérez Vaquero
- Basque Centre for Transfusion and Human Tissues (CVTTH) Galdakao Bizkaia Spain
| | - C. Gorria
- Department of Applied Mathematics, Statistics and Operations Research University of the Basque Country ‐ UPV/EHU Leioa Bizkaia Spain
| | - M. Lezaun
- Department of Applied Mathematics, Statistics and Operations Research University of the Basque Country ‐ UPV/EHU Leioa Bizkaia Spain
| | - F. J. López
- Department of Statistical Methods Institute for Biocomputation and Physics of Complex Systems (BIFI) University of Zaragoza Zaragoza Spain
| | - J. Monge
- Basque Centre for Transfusion and Human Tissues (CVTTH) Galdakao Bizkaia Spain
| | - C. Eguizabal
- Basque Centre for Transfusion and Human Tissues (CVTTH) Galdakao Bizkaia Spain
| | - M. A. Vesga
- Basque Centre for Transfusion and Human Tissues (CVTTH) Galdakao Bizkaia Spain
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