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  1. Article ; Online: Prevalence of red blood cell alloantibodies among blood donors in the French Military Blood Institute: A 10-year retrospective study.

    Pons, Sandrine / Poirrier, Laurence / Fleuriot, Estelle / Martinaud, Christophe

    Vox sanguinis

    2023  Volume 118, Issue 12, Page(s) 1100–1104

    Abstract: Background and objectives: Screening for red blood cell alloantibodies (RBC-Ab) is a critical step in ensuring blood transfusion safety performed by blood donation screening laboratories. We aim to evaluate the prevalence of the RBC-Ab among healthy ... ...

    Abstract Background and objectives: Screening for red blood cell alloantibodies (RBC-Ab) is a critical step in ensuring blood transfusion safety performed by blood donation screening laboratories. We aim to evaluate the prevalence of the RBC-Ab among healthy blood donors.
    Materials and methods: Antibody screening of serum of all voluntary blood donors was performed as a routine immune-haematological procedure by a solid-phase method on a fully automated immunohaematology analyser. Positive sera were further investigated to identify the specificity of RBC-Ab by a commercially available red cell panel.
    Results: Between January 2012 and December 2021, a total of 212,218 donations were screened for the presence of RBC-Ab, 74% from male donors (n = 157,898) and 26% from female donors (n = 54,320). Mean age at donation time was 32 ± 12 years. A total of 1007 donations were screened positive (0.47%), and 131 were confirmed positive for alloantibodies in their serum, yielding a prevalence of 0.06% (95% confidence interval: 0.05-0.07). Most frequent alloantibodies identified were of RH blood group system (64%), followed by anti-MNS (19%), anti-Kidd and Lewis (6% each) and anti-KEL (4%). The results showed a statistically higher prevalence of alloantibodies in women than men. Our results showed a lower prevalence as compared to the available data, which might be related to our study population.
    Conclusion: The prevalence of positive antibody screening in healthy donors in this study was found to be 0.47%, while the prevalence of alloantibodies was 0.06%. The most common alloantibodies were anti-RH1 (25%) and anti-RH3 (24%).
    MeSH term(s) Humans ; Male ; Female ; Young Adult ; Adult ; Isoantibodies ; Retrospective Studies ; Military Personnel ; Blood Donors ; Prevalence ; Erythrocytes
    Chemical Substances Isoantibodies
    Language English
    Publishing date 2023-10-22
    Publishing country England
    Document type Journal Article
    ZDB-ID 80313-3
    ISSN 1423-0410 ; 0042-9007
    ISSN (online) 1423-0410
    ISSN 0042-9007
    DOI 10.1111/vox.13537
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Performance of far forward iceless blood storage containers in controlled cold environments.

    Vuong, Antoine / Derkenne, Clément / Travers, Stéphane / Javaudin, Olivier / Clavier, Benoît / Martinaud, Christophe / Pasquier, Pierre

    Transfusion

    2024  

    Abstract: Background: The Golden Hour Box (GHB), an iceless blood container designed for transfusion closest to the point of injury, is used by military medical teams in remote damage control resuscitation. While its performance is well-established in hot ... ...

    Abstract Background: The Golden Hour Box (GHB), an iceless blood container designed for transfusion closest to the point of injury, is used by military medical teams in remote damage control resuscitation. While its performance is well-established in hot environments, it remains underexplored in cold conditions, a significant consideration in emerging global conflict zones.
    Study design and methods: Four GHBs were preconditioned at +4°C or +18°C for 8 h and subsequently exposed to controlled laboratory simulated temperatures of -5, -15, and -25°C for 100 h. The study focused on their capability to maintain an internal temperature between +2 and +6°C, the recommended range for red blood cells unit storage and transport, using calibrated sensors for precise monitoring.
    Results: When exposed to negative Celsius temperatures, GHBs showed varied performance depending on preconditioning temperatures. When preconditioned at +4°C, GHBs maintained an internal temperature within the target range (+2 to +6°C) for 100 h at -5°C, 52 ± 1 h at -15°C, and 29 ± 4 h at -25°C. In contrast, the internal temperature of GHBs preconditioned at +18°C exceeded this range in less than 30 min, then dropped below 2°C more rapidly than those preconditioned at +4°C, occurring within 20 ± 2 h at -15 and 13 ± 1 h at -25°C.
    Conclusion: The GHB, when properly preconditioned, effectively maintains internal temperatures suitable for blood product transport in extreme cold. Future research, including analyses of blood performances, is still needed to validate these results in more realistic operational conditions for use in cold environments.
    Language English
    Publishing date 2024-02-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208417-x
    ISSN 1537-2995 ; 0041-1132
    ISSN (online) 1537-2995
    ISSN 0041-1132
    DOI 10.1111/trf.17745
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: In vitro evaluation of a new viscoelastometry-based point-of-care analyzer.

    Corominas, Vanina / Chiniard, Thomas / Pasquier, Pierre / Foissaud, Vincent / de Rudnicki, Stéphane / Martinaud, Christophe

    Transfusion

    2024  

    Abstract: Introduction: The VCM is a point-of-care analyzer using a new viscoelastometry technique for rapid assessment of hemostasis on fresh whole blood. Its characteristics would make it suitable for use in austere environments. The purpose of this study was ... ...

    Abstract Introduction: The VCM is a point-of-care analyzer using a new viscoelastometry technique for rapid assessment of hemostasis on fresh whole blood. Its characteristics would make it suitable for use in austere environments. The purpose of this study was to evaluate the VCM in terms of repeatability, reproducibility and interanalyzer correlation, reference values in our population, correlation with standard coagulation assays and platelet count, correlation with the TEG5000 analyzer and resistance to stress conditions mimicking an austere environment.
    Methods: Repeatability, reproducibility, and interanalyzer correlation were performed on quality control samples (n = 10). Reference values were determined from blood donor samples (n = 60). Correlations with standard biological assays were assessed from ICU patients (n = 30) and blood donors (n = 60) samples. Correlation with the TEG5000 was assessed from blood donor samples. Evaluation of vibration resistance was performed on blood donor (n = 5) and quality control (n = 5) samples.
    Results: The CVs for repeatability and reproducibility ranged from 0% to 11%. Interanalyzer correlation found correlation coefficients (r
    Conclusion: The VCM analyzer is a reliable, easy-to-use instrument that correlates well with the TEG5000. Despite some logistical constraints, the results suggest that it can be used in austere environments. Further studies are required before its implementation.
    Language English
    Publishing date 2024-04-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208417-x
    ISSN 1537-2995 ; 0041-1132
    ISSN (online) 1537-2995
    ISSN 0041-1132
    DOI 10.1111/trf.17808
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Implementation of Low Titer Whole Blood for French overseas operations: O positive or negative products in massive hemorrhage?

    Martinaud, Christophe / Fleuriot, Estelle / Pasquier, Pierre

    Transfusion clinique et biologique : journal de la Societe francaise de transfusion sanguine

    2022  Volume 29, Issue 2, Page(s) 164–167

    Abstract: Massive hemorrhage is the leading preventable cause of death during military operations. During these operations, the delay between initial treatment and arrival at a surgical facility is considerably longer than in Metropolitan settings. This increased ... ...

    Abstract Massive hemorrhage is the leading preventable cause of death during military operations. During these operations, the delay between initial treatment and arrival at a surgical facility is considerably longer than in Metropolitan settings. This increased prehospital period requires the availability of blood products during the prehospital stage and justifies the availability of Low Titer Whole Blood (LTOWB) for surgical facilities. This product is a fully authorized labile blood product processed by the French Military Blood Institute according to French regulations. Its shelf life is 21 days when stored between 2 and 6°C. It provides the three products necessary for the transfusion management of war injuries in a single product and in physiological proportions. The low anti-A and anti-B titers (<1/64) make LTOWB compatible with any recipient. However, the RhD antigen remains an issue due to its potential harm in cases of transfusion to a D-negative childbearing-age woman due to the potential risk of fetal-maternal incompatibility. This risk must be balanced with the availability of D-negative blood products. Considering the epidemiology of war injuries and LTOWB use guidelines, in addition to the current knowledge on anti-RhD fetal-maternal alloimmunization, the harm-benefit assessment favors the use of RhD-positive LTOWB during overseas operations. Follow-up of childbearing recipients and setup of countermeasures to prevent alloimmunization in those cases remain key points of transfusion safety.
    MeSH term(s) Academies and Institutes ; Anemia, Hemolytic, Autoimmune ; Antibodies ; Blood Group Antigens ; Female ; Hemorrhage/etiology ; Hemorrhage/therapy ; Humans
    Chemical Substances Antibodies ; Blood Group Antigens
    Language English
    Publishing date 2022-02-26
    Publishing country France
    Document type Journal Article
    ZDB-ID 1204698-x
    ISSN 1953-8022 ; 1246-7820
    ISSN (online) 1953-8022
    ISSN 1246-7820
    DOI 10.1016/j.tracli.2022.02.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: First transfusion of cold-stored low-titer group O whole blood in the French armed forces.

    Aloird, Jonathan / Martinaud, Christophe / Pasquier, Pierre

    Transfusion

    2022  Volume 62, Issue 6, Page(s) 1305–1309

    Abstract: Background: Hemorrhage is the most frequent cause of preventable death in the combat setting. Therefore, early transfusion can improve survival of combat casualties. In the case of hemorrhagic shock, massive transfusion must be performed immediately ... ...

    Abstract Background: Hemorrhage is the most frequent cause of preventable death in the combat setting. Therefore, early transfusion can improve survival of combat casualties. In the case of hemorrhagic shock, massive transfusion must be performed immediately with high transfusion ratios (i.e., approximately 1:1:1 plasma:platelet:red blood cells). The use of cold-stored low-titer group O whole blood could address this challenging transfusion strategy in combat setting.
    Results: We present here a clinical case illustrating this strategy of high transfusion ratios, which includes-for the first time in a modern conflict involving French Armed Forces-the use of cold-stored low-titer group O whole blood. A 29-year-old French soldier suffered multiple gunshot wounds. Because of the critical condition of the patient in hemorrhagic shock, successive medical teams initiated an early and massive transfusion, using French lyophilized plasma, red blood cells, cold-stored low-titer group O whole blood, and warm fresh whole blood.
    Conclusion: This case report of a bleeding combat casualty, transfused with cold-stored low-titer group O whole blood for the first time in the French Armed Forces, emphasizes two important points: the importance of clinical assessment in the management of a bleeding patient with hemorrhagic shock and the feasibility of early massive transfusion using cold-stored low-titer group O whole blood.
    MeSH term(s) ABO Blood-Group System ; Adult ; Blood Transfusion ; Hemorrhage/etiology ; Hemorrhage/therapy ; Humans ; Military Personnel ; Resuscitation/adverse effects ; Shock, Hemorrhagic/complications ; Shock, Hemorrhagic/therapy ; Wounds and Injuries/complications ; Wounds, Gunshot
    Chemical Substances ABO Blood-Group System
    Language English
    Publishing date 2022-05-04
    Publishing country United States
    Document type Case Reports
    ZDB-ID 208417-x
    ISSN 1537-2995 ; 0041-1132
    ISSN (online) 1537-2995
    ISSN 0041-1132
    DOI 10.1111/trf.16897
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Multicenter evaluation of a high-throughput microarray platform for extensive red blood cell phenotyping and antibody screening.

    Martinaud, Christophe / Hermenegildo-López, Ygor Neil / Gallego, Irene Lucea / Fleuriot, Estelle / Barea-García, Luisa Maria

    Transfusion

    2023  Volume 63, Issue 8, Page(s) 1563–1570

    Abstract: Background: Blood typing and antibody screening are key elements of transfusion safety. However, available single platform, flexible, and affordable technologies are limited, especially for extended phenotyping. Microarray-based technology allows for ... ...

    Abstract Background: Blood typing and antibody screening are key elements of transfusion safety. However, available single platform, flexible, and affordable technologies are limited, especially for extended phenotyping. Microarray-based technology allows for this extended phenotyping with the flexibility of piecemeal analysis.
    Study design and methods: This study was conducted in three blood donor laboratories to determine the performance of a high-throughput microarray-based system for ABO, RH1-RH5, and KEL1 typing, ABS and extended phenotyping (RH8, KEL2&3, FY1&2, JK1, MNS3). Specimens were tested simultaneously on local platforms and on the microarray-based system. When discrepancies were identified, resolver testing were performed.
    Results: In total, 4862 blood samples were tested for standard phenotype, 4257 for antibody screening and 2194 for extended phenotype. Results were available for 92.12% of the samples. The overall percent agreements were: 100% for ABO, 99.8% for RH1, 99.24% for RH2-5 and 99.86% for KEL1, 93.16% for antibody screening, and 99.68% for extended phenotype.
    Conclusions: This microarray-based system provides highly comparable results to current CE marked assays. The ability to continuously test 3000 microarrays in 1 day, providing simultaneously both extended RBC phenotyping and antibody detection drives laboratory efficiencies. The results of our study validate the performance of this new technology; however, the percentage of samples without results must be reduced and further analysis is required to interpret the ABS screening performances. This could constitute a real breakthrough in transfusion, making it possible in the long term, on a single platform, to carry out all the analyses necessary for the qualification of donations.
    MeSH term(s) Humans ; Erythrocytes ; Blood Transfusion ; Blood Grouping and Crossmatching ; Laboratories ; Blood Donors
    Language English
    Publishing date 2023-05-12
    Publishing country United States
    Document type Multicenter Study ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 208417-x
    ISSN 1537-2995 ; 0041-1132
    ISSN (online) 1537-2995
    ISSN 0041-1132
    DOI 10.1111/trf.17395
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Feasibility of an acoustophoresis-based system for a high-throughput cell washing: application to bioproduction.

    Sugier, Hugo R / Bellebon, Ludovic / Aider, Jean-Luc / Larghero, Jérôme / Peltzer, Juliette / Martinaud, Christophe

    Cytotherapy

    2023  Volume 25, Issue 8, Page(s) 891–899

    Abstract: Background aims: These last decades have seen the emergence and development of cell-based therapies, notably those based on mesenchymal stromal cells (MSCs). The advancement of these promising treatments requires increasing the throughput of processed ... ...

    Abstract Background aims: These last decades have seen the emergence and development of cell-based therapies, notably those based on mesenchymal stromal cells (MSCs). The advancement of these promising treatments requires increasing the throughput of processed cell for industrialization in order to reduce production costs. Among the various bioproduction challenges, downstream processing, including medium exchange, cell washing, cell harvesting and volume reduction, remains a critical step for which improvements are needed. Typically, these processes are performed by centrifugation. However, this approach limits the automation, especially in small batch productions where it is performed manually in open system.
    Methods: An acoustophoresis-based system was developed for cell washing. The cells were transferred from one stream to another via the acoustic forces and were collected in a different medium. The optimal flow rates of the different streams were assessed using red blood cells suspended in an albumin solution. Finally, the impact of acoustic washing on adipose tissue-derived MSCs (AD-MSCs) transcriptome was investigated by RNA-sequencing.
    Results: With a single passage through the acoustic device at input flow rate of 45 mL/h, the albumin removal was up to 90% while recovering 99% of RBCs. To further increase the protein removal, a loop washing in two steps was performed and has allowed an albumin removal ≥99% and a red blood cell/AD-MSCs recovery of 99%. After loop washing of AD-MSCs, only two genes, HES4 and MIR-3648-1, were differently expressed compared with the input.
    Conclusions: In this study, we developed a continuous cell-washing system based on acoustophoresis. The process allows a theoretically high cell throughput while inducing little gene expression changes. These results indicate that cell washing based on acoustophoresis is a relevant and promising solution for numerous applications in cell manufacturing.
    MeSH term(s) Feasibility Studies ; Adipose Tissue ; Mesenchymal Stem Cells ; Acoustics ; Erythrocytes
    Language English
    Publishing date 2023-06-01
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2039821-9
    ISSN 1477-2566 ; 1465-3249
    ISSN (online) 1477-2566
    ISSN 1465-3249
    DOI 10.1016/j.jcyt.2023.05.003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Quality assessment of a serum and xenofree medium for the expansion of human GMP-grade mesenchymal stromal cells.

    Aussel, Clotilde / Busson, Elodie / Vantomme, Helene / Peltzer, Juliette / Martinaud, Christophe

    PeerJ

    2022  Volume 10, Page(s) e13391

    Abstract: Background: Cell-based therapies are emerging as a viable modality to treat challenging diseases, resulting in an increasing demand for their large-scale, high-quality production. Production facilities face the issue of batch-to-batch consistency while ... ...

    Abstract Background: Cell-based therapies are emerging as a viable modality to treat challenging diseases, resulting in an increasing demand for their large-scale, high-quality production. Production facilities face the issue of batch-to-batch consistency while producing a safe and efficient cell-based product. Controlling culture conditions and particularly media composition is a key factor of success in this challenge. Serum and Xeno-Free Media (SXFM) represent an interesting option to achieve this goal. By reducing batch to batch variability, they increase Good Manufacturing Practices (GMP)-compliance and safety regarding xenogenic transmission, as compared to fetal bovine serum (FBS) supplemented-media or human platelet lysate supplemented medium.
    Methods: In this study, the isolation, expansion and characteristics including the anti-inflammatory function of human mesenchymal stromal cells (MSC) are compared after culture in MEM
    Results: We showed that MSC derived from human bone-marrow and adipose tissue can be successfully isolated and expanded in this SXFM. Number and size of Colony-Forming Unit fibroblast (CFU-F) is increased compared to cells cultivated in hCPL medium. All cells retained a CD90
    Conclusions: The use of MSC-Brew GMP Medium can therefore be considered for clinical bioprocesses as a safe and efficient substitute for hCPL media.
    Language English
    Publishing date 2022-05-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2703241-3
    ISSN 2167-8359
    ISSN 2167-8359
    DOI 10.7717/peerj.13391
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  9. Article ; Online: Blood far forward program: Update on French armed forces policy.

    Martinaud, Christophe / Travers, Stéphane / Pasquier, Pierre / Sailliol, Anne / Ausset, Sylvain

    Transfusion

    2021  Volume 61 Suppl 1, Page(s) S354–S355

    MeSH term(s) Blood Banking/methods ; Blood Transfusion/methods ; France ; Hemorrhage/therapy ; Humans ; Military Medicine ; Military Personnel ; Transportation
    Language English
    Publishing date 2021-07-16
    Publishing country United States
    Document type Letter
    ZDB-ID 208417-x
    ISSN 1537-2995 ; 0041-1132
    ISSN (online) 1537-2995
    ISSN 0041-1132
    DOI 10.1111/trf.16457
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Quality assessment of a serum and xenofree medium for the expansion of human GMP-grade mesenchymal stromal cells

    Clotilde Aussel / Elodie Busson / Helene Vantomme / Juliette Peltzer / Christophe Martinaud

    PeerJ, Vol 10, p e

    2022  Volume 13391

    Abstract: Background Cell-based therapies are emerging as a viable modality to treat challenging diseases, resulting in an increasing demand for their large-scale, high-quality production. Production facilities face the issue of batch-to-batch consistency while ... ...

    Abstract Background Cell-based therapies are emerging as a viable modality to treat challenging diseases, resulting in an increasing demand for their large-scale, high-quality production. Production facilities face the issue of batch-to-batch consistency while producing a safe and efficient cell-based product. Controlling culture conditions and particularly media composition is a key factor of success in this challenge. Serum and Xeno-Free Media (SXFM) represent an interesting option to achieve this goal. By reducing batch to batch variability, they increase Good Manufacturing Practices (GMP)-compliance and safety regarding xenogenic transmission, as compared to fetal bovine serum (FBS) supplemented-media or human platelet lysate supplemented medium. Methods In this study, the isolation, expansion and characteristics including the anti-inflammatory function of human mesenchymal stromal cells (MSC) are compared after culture in MEMα supplemented with human Concentrate Platelet Lysate (hCPL, reference medium) or in MSC-Brew GMP Medium. The latter is a GMP SXFM manufactured in bags under strictly controlled conditions in volumes suitable for expansion to a clinical scale and does not require neither pre-coating of the cell culture units nor the addition of blood derivatives at the isolation step. Results We showed that MSC derived from human bone-marrow and adipose tissue can be successfully isolated and expanded in this SXFM. Number and size of Colony-Forming Unit fibroblast (CFU-F) is increased compared to cells cultivated in hCPL medium. All cells retained a CD90+, CD73+, CD105+, HLADR−, CD34−, CD45− phenotype. Furthermore, the osteogenic and adipocyte potentials as well as the anti-inflammatory activity were comparable between culture conditions. All cells reached the release criteria established in our production facility to treat inflammatory pathologies. Conclusions The use of MSC-Brew GMP Medium can therefore be considered for clinical bioprocesses as a safe and efficient substitute for hCPL media.
    Keywords Mesenchymal stromal cells ; Platelet Lysate ; GMP medium ; Clinical grade production ; Quality ; Medicine ; R ; Biology (General) ; QH301-705.5
    Subject code 660
    Language English
    Publishing date 2022-05-01T00:00:00Z
    Publisher PeerJ Inc.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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