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Characterization of GYP(B-A-B) hybrid glycophorins among Thai blood donors with Mia-positive phenotypes. 泰国献血者中 GYP(B-A-B)杂交糖蛋白 Mia 阳性表型的特征。
IF 2.4 3区 医学
Blood Transfusion Pub Date : 2024-05-01 Epub Date: 2023-10-24 DOI: 10.2450/BloodTransfus.567
Oytip Nathalang, Piyathida Khumsuk, Wanlapa Chaibangyang, Kamphon Intharanut
{"title":"Characterization of GYP(B-A-B) hybrid glycophorins among Thai blood donors with Mi<sup>a</sup>-positive phenotypes.","authors":"Oytip Nathalang, Piyathida Khumsuk, Wanlapa Chaibangyang, Kamphon Intharanut","doi":"10.2450/BloodTransfus.567","DOIUrl":"10.2450/BloodTransfus.567","url":null,"abstract":"<p><strong>Background: </strong>GYPA and GYPB genes encode the antigens of the MNS blood group system carried on glycophorin A (GPA) and glycophorin B (GPB), or on a hybrid molecule of GPA and GPB. GP hybrid variants are created through unequal crossing over and gene conversion, typically from the parent genes GYPA and GYPB. In the present study, we characterized the GYP(B-A-B) hybrid variants among Thai blood donors with Mi<sup>a</sup>-positive phenotypes using PCR-based coupled to DNA sequencing techniques.</p><p><strong>Materials and methods: </strong>Altogether, 1,020 samples from Thai blood donors were tested with anti-Mi<sup>a</sup> by conventional tube technique (CTT). Polymerase chain reaction with sequence-specific primer (PCR-SSP) was initially used to differentiate normal GYPB, GYP*Vw and groups of GYP*Hut, GYP*Mur, GYP*Hop, GYP*Bun and GYP*HF alleles. Subsequently, GYP(B-A-B) hybrid variants were investigated using DNA sequencing.</p><p><strong>Results: </strong>Among 1,020 blood donors, 127 (12.45%) were Mi(a+) phenotypes. The comparison Mi<sup>a</sup> typing results between CTT and PCR-SSP were concordant. All Mi(a+) samples were positive with only group of GYP*Hut, GYP*Mur, GYP*Hop, GYP*Bun and GYP*HF alleles by PCR-SSP. Regarding the sequencing results, 115/1,020 (11.27%) donors carried the GYP*Mur, of which 111/1,020 (10.88%) were GYP*Mur/GYPB heterozygotes and the other 4/1,020 (0.39%) donors were GYP*Mur/GYP*Mur homozygotes. The remaining 12 donors included different GYP*Bun-like alleles; 11 of them (1.08%) were GYP*Thai/GYPB heterozygotes, and one (0.10%) was GYP*Thai II/GYPB heterozygotes. With 5.83% (119/2,040) of the total hybrid alleles, GYP*Mur was the predominant allele. The GYP*HF, GYP*Bun, GYP*Hop and GYP*Kip alleles were not observed in this study.</p><p><strong>Discussion: </strong>Regarding the hybrid GP variants, a consensus of observed prevalent GYP*Mur and GYP*Bun-like alleles, respectively, was identified in the Thai population. The introduction of our strategy has allowed us to identify the zygosity for GYP hybrid variants, particularly GYP(B-A-B) hybrid genes, when antisera are unavailable and lacking adequate phenotypic features to determine GP variants.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":"198-205"},"PeriodicalIF":2.4,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11073628/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138812042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Defining the breakpoints of hybrid blood group alleles. 确定杂交血型等位基因的断点。
IF 3.7 3区 医学
Blood Transfusion Pub Date : 2024-05-01 DOI: 10.2450/BloodTransfus.763
Gregory A Denomme
{"title":"Defining the breakpoints of hybrid blood group alleles.","authors":"Gregory A Denomme","doi":"10.2450/BloodTransfus.763","DOIUrl":"10.2450/BloodTransfus.763","url":null,"abstract":"","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":"22 3","pages":"185-186"},"PeriodicalIF":3.7,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11073626/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140870279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A survey on the implementation of Patient Blood Management programs in Italy. 意大利患者血液管理计划实施情况调查。
IF 3.7 3区 医学
Blood Transfusion Pub Date : 2024-03-28 DOI: 10.2450/BloodTransfus.724
Vanessa Agostini, Francesca Masiello, Stefania Vaglio, Eva Veropalumbo, Ursula La Rocca, Simonetta Pupella, Vincenzo De Angelis
{"title":"A survey on the implementation of Patient Blood Management programs in Italy.","authors":"Vanessa Agostini, Francesca Masiello, Stefania Vaglio, Eva Veropalumbo, Ursula La Rocca, Simonetta Pupella, Vincenzo De Angelis","doi":"10.2450/BloodTransfus.724","DOIUrl":"https://doi.org/10.2450/BloodTransfus.724","url":null,"abstract":"<p><strong>Background: </strong>Since 2012, in line with the World Health Organization (WHO) resolution WHA63.12 of 05/21/2010, the Italian National Blood Center has been promoting patient blood management (PBM). In order to verify the level of PBM implementation nationwide, we submitted a survey to all healthcare providers.</p><p><strong>Material and methods: </strong>In line with what was proposed in the international scientific literature in the field, a series of indicators were used derived from the four main blocks related to PBM strategies: the management of patient anemia; the optimization of hemostasis; blood conservation strategies; patient-centred decision-making. We also added two blocks containing important information on general PBM management and other PBM-related aspects.</p><p><strong>Results: </strong>The survey showed good implementation of anemia screening programs in accordance with the timelines established by national and international guidelines, and the single unit policy is used in line with national guideline recommendations. However, the survey also revealed limited auditing of PBM programs and reduced monitoring and reporting of clinical outcomes and indicators.</p><p><strong>Discussion: </strong>The first national survey on the level of PBM implementation in Italy shows widespread adoption of diagnostic-therapeutic care pathways aimed at the diagnosis and treatment of anemia in the perioperative setting.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140337446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diagnosis and clinical management of thrombotic thrombocytopenic purpura (TTP): a consensus statement from the TTP Catalan group. 血栓性血小板减少性紫癜(TTP)的诊断和临床治疗:TTP 加泰罗尼亚小组的共识声明。
IF 3.7 3区 医学
Blood Transfusion Pub Date : 2024-03-01 Epub Date: 2023-09-04 DOI: 10.2450/BloodTransfus.522
Nadia García Muñoz, Sandra Ortega, Xavier Solanich, Joan Cid, Maribel Díaz, Ana B Moreno, Águeda Ancochea, Mireia Santos, Inés Hernández, Juan M Sanchez, Armando Luaña, Jose García, Lourdes Escoda, Laura Medina, Gonzalo J Ferrer, Jordi López, Roberto Céspedes, Johana A Díaz, Verónica Pons, David Valcárcel, Joan R Grifols
{"title":"Diagnosis and clinical management of thrombotic thrombocytopenic purpura (TTP): a consensus statement from the TTP Catalan group.","authors":"Nadia García Muñoz, Sandra Ortega, Xavier Solanich, Joan Cid, Maribel Díaz, Ana B Moreno, Águeda Ancochea, Mireia Santos, Inés Hernández, Juan M Sanchez, Armando Luaña, Jose García, Lourdes Escoda, Laura Medina, Gonzalo J Ferrer, Jordi López, Roberto Céspedes, Johana A Díaz, Verónica Pons, David Valcárcel, Joan R Grifols","doi":"10.2450/BloodTransfus.522","DOIUrl":"10.2450/BloodTransfus.522","url":null,"abstract":"<p><p>Thrombotic thrombocytopenic purpura (TTP) is a low prevalence disease characterized by severe deficiency of the enzyme ADAMTS13, leading to the development of thrombotic microangiopathy (TMA) and often resulting in severe organ disfunction. TTP is an extremely serious condition and, therefore, timely and appropriate treatment is critical to prevent life-threatening complications.Over the past 25 years, significant advances in the understanding of the pathophysiology of immune TTP have led to the development of readily available techniques for measuring ADAMTS13 levels, as well as new drugs that are particularly effective in the acute phase and in preventing relapses. These developments have improved the course of the disease.Given the complexity of the disease and its various clinical and laboratory manifestations, early diagnosis and treatment can be challenging.To address this challenge, a group of experienced professionals from the Catalan TTP group have developed this consensus statement to standardize terminology, diagnosis, treatment and follow up for immune TTP, based on currently available scientific evidence in the field. This guidance document aims to provide healthcare professionals with a comprehensive tool to make more accurate and timely diagnosis of TTP and improve patient outcomes.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":"176-184"},"PeriodicalIF":3.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10920070/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10180486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
T-TAS® 01 as a new tool for the evaluation of hemostasis in thrombocytopenic patients after platelet transfusion. T-TAS® 01 是评估血小板减少患者输注血小板后止血情况的新工具。
IF 3.7 3区 医学
Blood Transfusion Pub Date : 2024-03-01 Epub Date: 2023-11-29 DOI: 10.2450/BloodTransfus.550
Sahar Samanbar, Juan A Piñeyroa, Ana B Moreno-Castaño, Marc Pino, Sergi Torramadé-Moix, Julia Martinez-Sanchez, Miquel Lozano, Cristina Sanz, Ginés Escolar, Maribel Diaz-Ricart
{"title":"T-TAS<sup>®</sup> 01 as a new tool for the evaluation of hemostasis in thrombocytopenic patients after platelet transfusion.","authors":"Sahar Samanbar, Juan A Piñeyroa, Ana B Moreno-Castaño, Marc Pino, Sergi Torramadé-Moix, Julia Martinez-Sanchez, Miquel Lozano, Cristina Sanz, Ginés Escolar, Maribel Diaz-Ricart","doi":"10.2450/BloodTransfus.550","DOIUrl":"10.2450/BloodTransfus.550","url":null,"abstract":"<p><strong>Background: </strong>Current laboratory tests fail to evaluate the hemostatic function of platelets in patients with thrombocytopenia. We investigated the use of the Total Thrombus-Formation Analysis System (T-TAS<sup>®</sup> 01 [Fujimori Kogyo Co, Tokyo, Japan]) to evaluate hemostasis under conditions of experimental thrombocytopenia, and in patients before and after platelet transfusion.</p><p><strong>Materials and methods: </strong>Specific T-TAS 01 chips, for thrombocytopenic conditions, were used. The area under the curve (AUC) and occlusion time (OT, min) were measured in: (i) experimentally induced thrombocytopenia (183±15 to 6.3±1.2×10<sup>3</sup> platelets/μL) in blood samples from healthy donors (No.=13), and (ii) blood from oncohematological thrombocytopenic patients (No.=48), before and after platelet transfusion. The influences of hematocrit and number of transfusions were analyzed in these patients.</p><p><strong>Results: </strong>Progressive reductions of AUC and prolongations of OT related significantly to decreasing platelet counts (p<0.05 for all) in experimental thrombocytopenia. In samples from thrombocytopenic patients, platelet counts, AUC and OT were, respectively, 10.8±0.6×10<sup>3</sup>/μL, 175.2±59, and 27.2±1 min before transfusion; and 22±1.5×10<sup>3</sup>/μL, 400.8±83 and 22.9±1.5 min after platelet transfusion (p<0.01 for all). A hematocrit below 25% or exposure to ten or more previous platelet transfusions had a negative impact on the T-TAS 01 performance in patients. In vitro correction of the hematocrit improved the hemostatic response in thrombocytopenic patients.</p><p><strong>Discussion: </strong>T-TAS 01 measurements were sensitive to low platelet counts in the experimental setting. The technology was sensitive to evaluate the hemostatic capacity of platelet transfusions. Exposure to multiple medications, repeated platelet transfusions and lower hematocrits may interfere with the hemostatic performance in oncohematological patients with thrombocytopenia.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":"166-175"},"PeriodicalIF":3.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10920067/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138812072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pathogen reduced red blood cells as an alternative to irradiated and washed components with potential for up to 42 days storage. 减少病原体的红细胞可替代辐照和水洗成分,并可储存长达 42 天。
IF 2.4 3区 医学
Blood Transfusion Pub Date : 2024-03-01 Epub Date: 2023-07-14 DOI: 10.2450/BloodTransfus.479
Linda Larsson, Sara Ohlsson, Theresa Neimert Andersson, Emma Watz, Stella Larsson, Per Sandgren, Michael Uhlin
{"title":"Pathogen reduced red blood cells as an alternative to irradiated and washed components with potential for up to 42 days storage.","authors":"Linda Larsson, Sara Ohlsson, Theresa Neimert Andersson, Emma Watz, Stella Larsson, Per Sandgren, Michael Uhlin","doi":"10.2450/BloodTransfus.479","DOIUrl":"10.2450/BloodTransfus.479","url":null,"abstract":"<p><strong>Background: </strong>The urgency of maintaining a safe and adequate blood supply is increasing. One approach to ensure a sufficient supply is to limit the outdating frequency of blood components. Pathogen inactivation technology was developed primarily to increase safety by preventing transmission of infectious diseases. The Intercept Blood System for pathogen reduction of red blood cells (RBC) has additional benefits such as inactivation of leucocytes and removal of plasma and storage debris through centrifugation. Irradiation and automated washing are detrimental to the RBC membrane and often implicate shortened shelf-life. We aimed to assess whether pathogen inactivation can replace RBC irradiation and washing to avoid shelf-life reduction.</p><p><strong>Materials and methods: </strong>RBC concentrates (No.=48) were pooled-and-split into four study arms, which underwent pathogen inactivation treatment, irradiation, automated washing or no treatment (reference). RBC quality was evaluated during 42 days by assessment of storage lesion. Washing efficacy was defined by IgA and albumin reduction.</p><p><strong>Results: </strong>Pathogen reduced RBCs had similar membrane preservation to reference RBCs (hemolysis, microvesicles and extracellular potassium ions), whereas the RBCs were negatively impacted by irradiation or automated washing. ATP increased substantially post-pathogen inactivation, while 2,3-DPG decreased. Pathogen inactivation considerably reduced albumin and IgA, though slightly less efficiently than automated washing.</p><p><strong>Discussion: </strong>RBCs exhibit superior membrane preservation after pathogen inactivation treatment, compared to both irradiation and automated washing. This suggests that replacement is possible, even though the plasma reduction protocol could be further optimised.Replacement of irradiated and washed RBC concentrates with pathogen reduced RBC concentrates storable up to 42 days would be advantageous for both the blood supply and patient safety.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":"130-139"},"PeriodicalIF":2.4,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10920064/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10185301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Donor specific anti-HLA antibodies in hematopoietic stem cell transplantation. Single Center prospective evaluation and desensitization strategies employed. 造血干细胞移植中的供体特异性抗HLA抗体。采用单中心前瞻性评估和脱敏策略。
IF 3.7 3区 医学
Blood Transfusion Pub Date : 2024-03-01 Epub Date: 2023-09-21 DOI: 10.2450/BloodTransfus.464
Ursula La Rocca, Maria P Perrone, Alfonso Piciocchi, Walter Barberi, Paola Gesuiti, Luca Laurenti, Paola Cinti, Maria Gozzer, Manhaz Shafii Bafti, Daniela Carmini, Nadia Cinelli, Claudio Cavallari, Gianluca Giovannetti, Roberto Ricci, Gabriella Girelli, Robin Foà, Maurizio Martelli, Serelina Coluzzi, Anna P Iori
{"title":"Donor specific anti-HLA antibodies in hematopoietic stem cell transplantation. Single Center prospective evaluation and desensitization strategies employed.","authors":"Ursula La Rocca, Maria P Perrone, Alfonso Piciocchi, Walter Barberi, Paola Gesuiti, Luca Laurenti, Paola Cinti, Maria Gozzer, Manhaz Shafii Bafti, Daniela Carmini, Nadia Cinelli, Claudio Cavallari, Gianluca Giovannetti, Roberto Ricci, Gabriella Girelli, Robin Foà, Maurizio Martelli, Serelina Coluzzi, Anna P Iori","doi":"10.2450/BloodTransfus.464","DOIUrl":"10.2450/BloodTransfus.464","url":null,"abstract":"<p><strong>Background: </strong>In the setting of mismatched-hematopoietic stem cells transplantation, the detection of antibodies directed against donor-specific HLA allele(s) or antigen(s) (DSA) represents a barrier for engraftment. It is thus necessary to plan an immunosuppressive strategy, or to select an alternative donor. This prospective study aimed at evaluating the efficacy of our strategy for testing DSAs and the efficacy of the desensitization strategy (DS) employed between November 2017 and November 2020.</p><p><strong>Materials and methods: </strong>The anti-HLA antibody search was performed using the Luminex bead assays (Lifecode ID and LSA I/II-Immucor) and expressed as mean fluorescence intensity (MFI >1,000 positive). If the patient had DSAs and no alternative donors, a DS was employed with rituximab (day -15), 2 single volume plasmaphereses (PP; days -9 and -8), intravenous immunoglobulins (day -7) and infusion of HLA selected platelets, if persistent DSAs were directed against class I HLA. DS was scheduled with or without PP, according to the DSA MFI (>1,000 or <5,000) and FCXM (flow cytometry crossmatch).</p><p><strong>Results: </strong>Twenty-two out of 126 patients (17.46%) showed anti-HLA antibodies, 5 of them DSAs (3.97% of total); 3 patients underwent DS obtaining engraftment. Female gender (p=0.033) and a history of previous pregnancies or miscarriages (p=0.009) showed a statistically significant impact on alloimmunization. Factors associated with a delayed neutrophil engraftment were patient's female gender (p=0.039), stem cell source (p=0.025), and a high HSCT-specific comorbidity index (p=0.028). None of the analyzed variables, including the DSA detection, influenced engraftment.</p><p><strong>Conclusions: </strong>Our study confirms the importance to test DSAs in mismatched-hematopoietic stem cells transplantation The DS used proved successful in removing DSAs. Prospective multicenter studies are needed to better define and validate consensus strategies on DSA management in HSCT.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":"157-165"},"PeriodicalIF":3.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10920073/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41240262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Collection efficiency of mononuclear cells in offline extracorporeal photopheresis: can processing time be shortened? 离线体外循环光子疗法中单核细胞的收集效率:处理时间能否缩短?
IF 3.7 3区 医学
Blood Transfusion Pub Date : 2024-03-01 Epub Date: 2023-07-14 DOI: 10.2450/BloodTransfus.442
Orkan Kartal, Nadja Lindlbauer, Sandra Laner-Plamberger, Eva Rohde, Fabian Foettinger, Laura Ombres, Georg Zimmermann, Cornelia Mrazek, Wanda Lauth, Christoph Grabmer
{"title":"Collection efficiency of mononuclear cells in offline extracorporeal photopheresis: can processing time be shortened?","authors":"Orkan Kartal, Nadja Lindlbauer, Sandra Laner-Plamberger, Eva Rohde, Fabian Foettinger, Laura Ombres, Georg Zimmermann, Cornelia Mrazek, Wanda Lauth, Christoph Grabmer","doi":"10.2450/BloodTransfus.442","DOIUrl":"10.2450/BloodTransfus.442","url":null,"abstract":"<p><strong>Background: </strong>Extracorporeal photopheresis (ECP) is a well-established but lengthy and burdensome cell-based therapy for various diseases such as cutaneous T-cell lymphoma, graft-versus-host disease and organ rejection after transplantation. The number of mononuclear cells (MNCs) that needs to be collected to obtain a clinical response to ECP is still under debate. The purpose of this retrospective study was to determine the number of lymphocytes, monocytes and neutrophils in mononuclear cell products (MCP) by flow cytometry and the collection efficiency in the offline ECP setting.</p><p><strong>Materials and methods: </strong>We collected data from 10 different patients undergoing 162 ECP procedures using the Spectra Optia device for MNC collection. White blood cell (WBC) count of MCP was determined using a hematology analyzer. MNCs were analyzed for CD45 and CD14 expression by flow cytometry to exactly determine the collected lymphocyte and monocyte fractions.</p><p><strong>Results: </strong>Collected MCP showed high cell yields with 55.3×10<sup>6</sup>/kg MNCs and 41.1×10<sup>6</sup>/kg lymphocytes. MCP were characterized by high MNC (81.3%) and low neutrophils (18.7%) percentage. Mean collection efficiency for WBCs and for MNCs was 23.9% and 62.0%, respectively. The MNC fraction showed a moderate to high correlation between peripheral blood cell count of patients and MCP count.</p><p><strong>Discussion: </strong>This study is one of a few reports showing the monocyte-to-lymphocyte relation in MCP for ECP determined by flow cytometry. In comparison to historical data from inline ECP, the offline ECP processing one total blood volume results in considerably higher cell yields. For this reason, and to reduce the burden on patients, we propose that the offline ECP processing time can be substantially reduced.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":"150-156"},"PeriodicalIF":3.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10920072/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9881544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Psychological responses to blood donated by men who have sex with men. 对男男性行为者献血的心理反应。
IF 3.7 3区 医学
Blood Transfusion Pub Date : 2024-03-01 Epub Date: 2023-06-07 DOI: 10.2450/BloodTransfus.481
Lisa A Williams, Kate Nicholls, James R W Williams
{"title":"Psychological responses to blood donated by men who have sex with men.","authors":"Lisa A Williams, Kate Nicholls, James R W Williams","doi":"10.2450/BloodTransfus.481","DOIUrl":"10.2450/BloodTransfus.481","url":null,"abstract":"<p><strong>Background: </strong>Restrictions previously limiting the ability of men who have sex with men to donate blood are being eased in a number of nations worldwide. In the context of these changes, it is important to determine public perceptions of receiving a transfusion of blood donated by men who have sex with men.</p><p><strong>Materials and methods: </strong>In online surveys, 510 (Study 1) and 1,062 (Study 2) heterosexual participants reported attitudes, anxiety, disgust, and gratitude towards potentially receiving a transfusion of blood donated by a homosexual male donor and a heterosexual male donor. In Study 2, half of the participants were reminded of the safety testing carried out on donated blood samples. Negative attitudes, anxiety, disgust, and gratitude were compared between the two donors using t-tests and within-participants indirect effects analysis.</p><p><strong>Results: </strong>Stronger negative attitudes, higher anxiety and disgust, and lower gratitude were reported in relation to a potential transfusion of blood donated by the homosexual male donor relative to the heterosexual male donor (|d|=0.26-0.46). This was the case even when participants were reminded of the safety testing completed on donated blood samples in Study 2. In both studies, the effect of donor sexual orientation on attitudes was explained via heightened anxiety and disgust and attenuated gratitude (b=0.05-0.30).</p><p><strong>Discussion: </strong>Considering receiving a transfusion of blood donated by a homosexual male donor elicits more negative attitudes, anxiety and disgust, and less positive emotion, relative to blood donated by a heterosexual male donor. These attitudes and emotional reactions are not shifted by a reminder of the safety testing carried out on donated blood samples. In the context of changing restrictions on blood donation by men who have sex with men, these findings highlight a challenge to shift public perception to embrace this cohort of donors.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":"96-105"},"PeriodicalIF":3.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10920068/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10185297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Toward a definition of immunological risk for patients with anti-HLA antibodies before stem cell transplantation. 干细胞移植前抗HLA抗体患者免疫风险的定义。
IF 3.7 3区 医学
Blood Transfusion Pub Date : 2024-03-01 Epub Date: 2023-09-21 DOI: 10.2450/BloodTransfus.630
Roberto Crocchiolo
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