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Bleeding recurrence risk among hospitalized patients undergoing therapeutic plasma exchange: a multi-center study. 接受治疗性血浆置换的住院患者的出血复发风险:一项多中心研究。
IF 2.4 3区 医学
Blood Transfusion Pub Date : 2024-09-01 Epub Date: 2024-07-19 DOI: 10.2450/BloodTransfus.722
Alexandre Soares Ferreira Junior, Morgana Pinheiro Maux Lessa, Kate Sanborn, Alexander Gordee, Maragatha Kuchibhatla, Matthew S Karafin, Oluwatoyosi A Onwuemene
{"title":"Bleeding recurrence risk among hospitalized patients undergoing therapeutic plasma exchange: a multi-center study.","authors":"Alexandre Soares Ferreira Junior, Morgana Pinheiro Maux Lessa, Kate Sanborn, Alexander Gordee, Maragatha Kuchibhatla, Matthew S Karafin, Oluwatoyosi A Onwuemene","doi":"10.2450/BloodTransfus.722","DOIUrl":"10.2450/BloodTransfus.722","url":null,"abstract":"<p><strong>Background: </strong>In hospitalized patients undergoing therapeutic plasma exchange (TPE), it is not known how TPE-associated bleeding risk is impacted by a prior bleeding episode. Therefore, to assess the prevalence and predictors of bleeding recurrence, we analyzed data from the Recipient Epidemiology and Donor Evaluation Study-III (REDS-III).</p><p><strong>Materials and methods: </strong>Using a retrospective cross-sectional analysis of REDS-III public use files, we identified hospitalized adults who had a major bleeding episode prior to their first TPE procedure. Patients were classified into two cohorts based on bleeding recurrence (no-recurrence vs recurrence). After identifying potential predictors, we used multiple imputation by chained equations to impute variables with <30% missing data. Variable selection was optimized using a 10-fold cross validated least absolute shrinkage and selection operator. Final predictors were identified by fitting a logistic regression model.</p><p><strong>Results: </strong>In 310 patients with major bleeding prior to TPE initiation, bleeding recurred in 121 (39.0%). We identified the following seven unique predictors: 1) >10 TPE procedures (OR 2.23); 2) intensive care unit stay (OR 1.35); 3) thrombocytopenia (OR 1.26); 4) surgery (OR 1.22); 5) hepatic disease (OR 1.21); 6) 6-10 TPE procedures (OR 1.04); and 7) Asian race (OR 1.01). We also identified the following five interactions: 1) surgery and therapeutic anticoagulation (OR 1.50); 2) 6-10 TPE procedures and therapeutic anticoagulation (OR 1.05); 3) 6-10 TPE procedures and antiplatelets (OR 1.02); 4) >10 TPE procedures and antiplatelets (OR 1.00); and 5) albumin-only TPE and antiplatelets (OR 0.53). When assessed for adjusted performance, the prediction model had a C-statistic of 0.617 (95% CI 0.613-0.619) and Brier Score of 0.342 (95% CI 0.340-0.347).</p><p><strong>Discussion: </strong>In this study assessing predictors of bleeding recurrence among hospitalized patients undergoing TPE, we identified seven variables and five interactions. These findings should be validated in future studies.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":"420-428"},"PeriodicalIF":2.4,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11390607/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141972193","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
Single-exon fetal RHD genotyping: a 31-month follow up in the obstetric population of Western Sweden. 单外显子胎儿 RHD 基因分型:瑞典西部产科人群 31 个月的随访。
IF 2.4 3区 医学
Blood Transfusion Pub Date : 2024-09-01 Epub Date: 2024-04-23 DOI: 10.2450/BloodTransfus.741
Cecilia Pardi, Åsa Hellberg, Pauline Isakson
{"title":"Single-exon fetal RHD genotyping: a 31-month follow up in the obstetric population of Western Sweden.","authors":"Cecilia Pardi, Åsa Hellberg, Pauline Isakson","doi":"10.2450/BloodTransfus.741","DOIUrl":"10.2450/BloodTransfus.741","url":null,"abstract":"<p><strong>Background: </strong>The Rh blood group system is highly complex, polymorphic, and immunogenic. The presence of RHD gene variants in RhD negative pregnant women is a challenge in fetal RHD genotyping as it may influence the antenatal management of anti-D prophylaxis. The aim of this study was to determine the efficiency of a non-invasive single-exon approach in the obstetric population of Western Sweden in a 31-month follow up. The frequency and type of maternal RHD variants were explored and the relation to the ethnicity was elucidated. Discrepant results between fetal RHD genotyping and serological blood group typing of newborns were investigated and clarified.</p><p><strong>Materials and methods: </strong>RHD exon 4 was analysed with quantitative real-time PCR technique in a total of 6,948 blood samples from RhD negative women in early pregnancy. All cases with suspected maternal RHD gene and discrepant results observed in newborn samples, were further investigated using both serological and molecular technologies.</p><p><strong>Results: </strong>A total of 43 samples (0.6%) had inconclusive fetal genotyping result due the presence of a maternal RHD gene. These findings were in most cases (>66%) observed in pregnant women of non-European ancestry. Additionally, two novel RHD alleles were found. Seven discrepant results between fetal RHD genotype and serological RhD type of the newborns, were shown to be related to D antigen variants in newborns. Assay sensitivity was 99.95%, specificity 100%, and accuracy 99.97%.</p><p><strong>Discussion: </strong>The single-exon approach for fetal RHD screening early in pregnancy is an appropriate choice in the population of Western Sweden, with a very low frequency of inconclusive results caused by the presence of maternal RHD gene variants. Due to the high sensitivity, specificity, and accuracy of the test, serological typing of neonates born to RhD negative women has no longer been performed at our laboratory since June 2023.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":"387-394"},"PeriodicalIF":2.4,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11390609/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141179843","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
The effects of pathogen reduction technology on apheresis platelet concentrates stored in PAS. 减少病原体技术对储存在 PAS 中的无细胞血小板浓缩物的影响。
IF 2.4 3区 医学
Blood Transfusion Pub Date : 2024-09-01 Epub Date: 2024-01-09 DOI: 10.2450/BloodTransfus.600
Stavros Tsalas, Andreas G Tsantes, Eleni Petrou, Sofia Mellou, Rozeta Sokou, Electra Loukopoulou, Anastasios G Kriebardis, Sotirios P Fortis, Dimitrios V Papadopoulos, Aristeidis G Vaiopoulos, Styliani Kokoris, Argirios E Tsantes
{"title":"The effects of pathogen reduction technology on apheresis platelet concentrates stored in PAS.","authors":"Stavros Tsalas, Andreas G Tsantes, Eleni Petrou, Sofia Mellou, Rozeta Sokou, Electra Loukopoulou, Anastasios G Kriebardis, Sotirios P Fortis, Dimitrios V Papadopoulos, Aristeidis G Vaiopoulos, Styliani Kokoris, Argirios E Tsantes","doi":"10.2450/BloodTransfus.600","DOIUrl":"10.2450/BloodTransfus.600","url":null,"abstract":"<p><strong>Background: </strong>The impact of pathogen reduction technology (PRT) such as Mirasol, and the effect of platelet additive solutions (PAS) on the activity and hemostatic profile of transfused apheresis platelets remain largely unknown. The aim of this study was to assess the in vitro hemostatic and metabolic profile of Mirasol treated platelets in PAS during a 7-day storage period.</p><p><strong>Material and methods: </strong>Ten split bags containing apheresis platelets stored in PAS were split into two groups; control platelets (No.=10 units) and PRT-treated platelets (No.=10 units). In vitro evaluation of the platelet components was performed on the 1<sup>st</sup>, 3<sup>rd</sup>, 5<sup>th</sup>, and 7<sup>th</sup> days of the storage period. Several metabolic parameters including pH, glucose, and lactate levels were evaluated, while assessment of their hemostatic capacity was performed using light transmission aggregometry (LTA) and viscoelastic studies such as rotational thromboelastometry (ROTEM) and thromboelastography (TEG). Last, Annexin V levels were measured though flow cytometry for evaluation of platelet activation.</p><p><strong>Results: </strong>Clot strength, as reflected by the maximum clot firmness (MCF) and the maximum amplitude (MA) parameters of the viscoelastic studies was significantly decreased in the PRT-treated platelets compared to the control platelets (p<0.05). Clot strength based on MCF and MA values was also found to be decreasing over storage time in PRT-treated platelets (p<0.001), while this was not evident in control platelets. Moreover, the comparison between pH, glucose, and lactate levels were indicative of increased metabolic activity in PRT-treated platelets compared to control platelets (p<0.001). Last, Annexin-V was significantly higher in PRT-treated platelets compared to control platelets on the 7<sup>th</sup> day of the storage period (p<0.001).</p><p><strong>Discussion: </strong>The results of this study indicate that increased PSL induced by PRT treatment leads to a decreased in vitro platelet hemostatic efficacy and increased metabolic activity. However, the clinical impact of these alterations needs further investigation.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":"405-414"},"PeriodicalIF":2.4,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11390611/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139693368","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
Assessing the risk of transfusion-transmitted variant Creutzfeldt-Jakob disease: a European perspective. 评估输血传播变异型克雅氏症的风险:欧洲视角。
IF 2.4 3区 医学
Blood Transfusion Pub Date : 2024-09-01 Epub Date: 2024-05-16 DOI: 10.2450/BloodTransfus.778
Dragoslav Domanović, Antoine Lewin, Peter O'Leary, Tiziana Janner-Jametti, Soraya Amar El Dusouqui, Ana Paula Sousa, Hans Zaaijer, Barnaby Roberts, Daisy Bougard, Daniele Prati, Jonas Nordberg, Christian Erikstrup, Mart Janssen, Ryanne Lieshout-Krikke, Knut Gubbe, Niamh O'Flaherty, Genevieve Mathy, Andrée-Marie Chantillon, Riikka Lehtisalo, Øfsteng H Sørensen, Pierre Tiberghien, Stephen Thomas
{"title":"Assessing the risk of transfusion-transmitted variant Creutzfeldt-Jakob disease: a European perspective.","authors":"Dragoslav Domanović, Antoine Lewin, Peter O'Leary, Tiziana Janner-Jametti, Soraya Amar El Dusouqui, Ana Paula Sousa, Hans Zaaijer, Barnaby Roberts, Daisy Bougard, Daniele Prati, Jonas Nordberg, Christian Erikstrup, Mart Janssen, Ryanne Lieshout-Krikke, Knut Gubbe, Niamh O'Flaherty, Genevieve Mathy, Andrée-Marie Chantillon, Riikka Lehtisalo, Øfsteng H Sørensen, Pierre Tiberghien, Stephen Thomas","doi":"10.2450/BloodTransfus.778","DOIUrl":"10.2450/BloodTransfus.778","url":null,"abstract":"<p><p>Several countries have recently reassessed the international risk of variant Creutzfeldt-Jakob disease (vCJD) transmission through transfusion of blood and blood components (red blood cells, platelets and plasma) and relaxed donor deferrals based on geographic and transfusion exposure in countries formerly considered to be high risk, such as the UK. In this regard, the European Blood Alliance organised a consensus meeting of experts and involved professionals to discuss current knowledge, epidemiological data, prevention and various methods for assessing the risk of transfusion-transmitted vCJD, as well as to develop an appropriate position on possible approaches to address these challenges in Europe. Participants reached a consensus that the current risk of transfusion-transmitted vCJD associated with blood donors who either travelled to or received transfusions in the UK during the vCJD outbreak is minimal. In addressing such risks, it would be pragmatic that assessments and guidelines are developed by European expert bodies, rather than individual assessments by Member States. Regardless of the approach used, European or national, a qualitative risk assessment based on a review and analysis of available data, considering all the uncertainties and experiences of other countries, would provide crucial information to reassess blood donation strategies regarding the transfusion-associated vCJD risk.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":"415-419"},"PeriodicalIF":2.4,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11390612/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141181424","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
Rh disease in Mexico: evaluating regional and institutional differences in treatment availability and disease management. 墨西哥的 Rh 病:评估地区和机构在提供治疗和疾病管理方面的差异。
IF 2.4 3区 医学
Blood Transfusion Pub Date : 2024-08-08 DOI: 10.2450/BloodTransfus.750
Jessica C Ding, Celina Montemayor-Garcia, Brie A Stotler, Steven L Spitalnik, José A Ayala Méndez
{"title":"Rh disease in Mexico: evaluating regional and institutional differences in treatment availability and disease management.","authors":"Jessica C Ding, Celina Montemayor-Garcia, Brie A Stotler, Steven L Spitalnik, José A Ayala Méndez","doi":"10.2450/BloodTransfus.750","DOIUrl":"https://doi.org/10.2450/BloodTransfus.750","url":null,"abstract":"<p><strong>Background: </strong>Rh disease occurs following maternal alloimmunization, which can develop due to RhD blood group antigen incompatibility between a mother and her fetus. Despite developing robust clinical protocols for effective immunoprophylaxis over the last 50+ years, a significant global burden of Rh disease still exists, particularly in low/middle-income countries such as Mexico.</p><p><strong>Materials and methods: </strong>This study examined disparities in the allocation of maternal and child health resources, as well as clinical knowledge regarding Rh disease, to gain insight into why Rh disease remains prevalent in Mexico. To this end, an 11-question survey was sent to members of the Federación Mexicana de Colegios de Obstetricia y Ginecología (FEMECOG) to evaluate their knowledge of the availability and implementation of anti-RhD immunoglobulin prophylaxis in their practices and institutions, and about managing Rh disease by monitoring fetal anemia risk and providing intrauterine treatment when necessary. Responses were separated by region, and chi-square two-by-two contingency tests were performed to evaluate regional and institutional differences.</p><p><strong>Results: </strong>Significant variations in prevention and treatment were found within the Mexican healthcare system, particularly, with regard to providing anti-RhD immunoglobulin to prevent alloimmunization, which is critically important for preventing Rh disease. Specifically, Regions 5, 6, and 7 were most lacking in this regard.</p><p><strong>Discussion: </strong>This study highlights differences in the Mexican healthcare system in preventing and treating Rh disease. Closing the gap in the availability of anti-RhD immunoglobulin should take priority in future efforts aimed at providing equitable care, because this will lead to the more preferable outcome of preventing Rh disease, rather than forcing patients to seek out more complex measures for treating Rh disease after it develops. These data can be used to create strategies to understand and eliminate these healthcare disparities.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141972198","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
CD36 antibodies in isoimmunised African-origin pregnant women: three years' experience in Spain. 同种免疫非洲裔孕妇的 CD36 抗体:西班牙三年的经验。
IF 2.4 3区 医学
Blood Transfusion Pub Date : 2024-08-08 DOI: 10.2450/BloodTransfus.812
Carme Canals, Cecilia Gonzalez-Santesteban, Immaculada Vinyets, Mercedes Gracia, Neus Boto, Marta Salgado, Immaculada Moreno, Marta Rodríguez-Aliberas, Enric Casanovas, Eduardo Muñiz-Diaz, Núria Nogués
{"title":"CD36 antibodies in isoimmunised African-origin pregnant women: three years' experience in Spain.","authors":"Carme Canals, Cecilia Gonzalez-Santesteban, Immaculada Vinyets, Mercedes Gracia, Neus Boto, Marta Salgado, Immaculada Moreno, Marta Rodríguez-Aliberas, Enric Casanovas, Eduardo Muñiz-Diaz, Núria Nogués","doi":"10.2450/BloodTransfus.812","DOIUrl":"https://doi.org/10.2450/BloodTransfus.812","url":null,"abstract":"","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141972194","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
The tandem CD33-CLL1 CAR-T as an approach to treat acute myeloid leukemia. 串联 CD33-CLL1 CAR-T 作为治疗急性髓性白血病的一种方法。
IF 2.4 3区 医学
Blood Transfusion Pub Date : 2024-08-06 DOI: 10.2450/BloodTransfus.786
Huiru Wang, Shanglong Feng, Yanliang Zhu, Yafeng Zhang, Ziwei Zhou, Zhigang Nian, Xueqin Lu, Peng Peng, Shu Wu, Li Zhou
{"title":"The tandem CD33-CLL1 CAR-T as an approach to treat acute myeloid leukemia.","authors":"Huiru Wang, Shanglong Feng, Yanliang Zhu, Yafeng Zhang, Ziwei Zhou, Zhigang Nian, Xueqin Lu, Peng Peng, Shu Wu, Li Zhou","doi":"10.2450/BloodTransfus.786","DOIUrl":"https://doi.org/10.2450/BloodTransfus.786","url":null,"abstract":"<p><strong>Background: </strong>Acute myeloid leukemia (AML) is characterized by high heterogeneity, poor long-term survival, and a propensity for relapse. Exceptional efficacy in treating recurrent or refractory B-lymphoid malignancies has been demonstrated by Chimeric antigen receptor T cells (CAR-T cells). Given the therapeutic potential of targeting both CD33 and C-type lectin-like molecule-1 (CLL1) in AML, the development of a dual-targeting CD33-CLL1 CAR-T cells assumes significant importance.</p><p><strong>Materials and methods: </strong>The expressions of CD33 and CLL-1 antigens in peripheral blood cells and bone marrow cells from AML patients was assessed. Subsequently, a Chimeric Antigen Receptor (CAR) incorporating a dual-specific single-chain variable fragment targeting CLL1 and CD33 (CD33-CLL1-CAR-T) was engineered. The anti-tumor efficacy and potential side effects of CD33-CLL1-CAR-T cells were comprehensively investigated in both in vitro and in vivo settings.</p><p><strong>Results: </strong>The constructed tandem CD33-CLL1 CAR-T exhibited potent cytotoxicity against leukemia cell lines and human primary AML cells in vitro. Co-cultivation of AML blasts with CD33-CLL1-CAR-T cells resulted in effective proliferation and the secretion of substantial quantities of GM-CSF and IFN-γ. Importantly, the impact of CD33-CLL1-CAR-T cells on normal hematopoietic stem cells was minimal, ensuring safety in vivo mouse models. Notably, significant anti-leukemic activity was observed in the mouse model, with CD33-CLL1-CAR-T cells leading to tumor eradication and prolonged survival.</p><p><strong>Discussion: </strong>The tandem CD33-CLL1 CAR-T cells not only efficiently eliminated AML blasts but also exhibited low cytotoxicity toward normal hematopoietic stem cells (HSCs). These findings underscore the potential clinical applicability of the tandem CD33-CLL1 CAR-T cells as an effective and safe treatment strategy for AML, representing a noteworthy advancement in the field of CAR-T cells therapy.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141972199","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
Efficiency assessment of cord blood banking and compatibility with delayed cord clamping. 脐带血库的效率评估以及与延迟脐带钳夹的兼容性。
IF 2.4 3区 医学
Blood Transfusion Pub Date : 2024-08-05 DOI: 10.2450/BloodTransfus.767
Geethika S Manchanayake, Elisenda Farssac Busquets, Ana García Buendia, Patrícia Ferrer, Gisela Palomar, Maria José Pelegay, Irene Ribera, Carmen Azqueta, Dinara Samarkanova, Jesus Fernandez-Sojo, Nerea Castillo Flores, Sergio Querol
{"title":"Efficiency assessment of cord blood banking and compatibility with delayed cord clamping.","authors":"Geethika S Manchanayake, Elisenda Farssac Busquets, Ana García Buendia, Patrícia Ferrer, Gisela Palomar, Maria José Pelegay, Irene Ribera, Carmen Azqueta, Dinara Samarkanova, Jesus Fernandez-Sojo, Nerea Castillo Flores, Sergio Querol","doi":"10.2450/BloodTransfus.767","DOIUrl":"https://doi.org/10.2450/BloodTransfus.767","url":null,"abstract":"<p><strong>Background: </strong>There is debate whether delayed umbilical cord clamping following delivery, the current gold standard, affects the proportion of cord blood units (CBU) suitable for public cord blood banking. This study was designed to assess the impact of delayed cord clamping on the number of CBU suitable for therapeutic uses.</p><p><strong>Materials and methods: </strong>To minimize variability, data from the four most active collection centers within the Programa Concordia (Spain) were included. Data on CBU collected in utero from mothers following normal vaginal deliveries from July 2018 to December 2021 were analyzed. The weight of the collection bags (as a surrogate of volume) and total nucleated cell (TNC) count were analyzed according to three defined clamping times: 30 s, 60 s and ≥120 s. The CBU were stratified as suitable for stem cell transplantation (≥110 g and ≥1,500×10<sup>6</sup> TNC/unit) or other clinical applications (≥100 g but TNC count below the threshold).</p><p><strong>Results: </strong>- There were 131 (18%), 548 (76%), and 40 (5%) CBU collected at 30 s, 60 s and ≥120 s, respectively. The median weight of the CBU decreased gradually with time, with a significant difference between units collected when the cord was clamped at 30 s or 60 s (p=0.036), so significantly fewer CBU met the minimal weight criterion (100 g) at 60 s than at 30 s (p=0.002). However, this was not reflected by the TNC available, resulting in non-statistical differences in CBU eligible for banking between these times. The major predictor of collection success was the neonate's birth-weight.</p><p><strong>Discussion: </strong>-Despite decreases in the volume of cord blood collected when cord clamping at 30 s or 60 s, TNC count is maintained resulting in similar numbers of CBU eligible for banking. The different clamping delays investigated in this study are, therefore, compatible with public cord blood banking needs.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141972195","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
Quality and stability studies of red blood cell concentrates from umbilical cord blood compared to their adult counterparts. 脐带血浓缩红细胞与成人浓缩红细胞的质量和稳定性比较研究。
IF 2.4 3区 医学
Blood Transfusion Pub Date : 2024-08-02 DOI: 10.2450/BloodTransfus.761
Dinara Samarkanova, Margarita Codinach, Gemma Aran, Mar Guitart, Elena Valdivia, Lluis Martorell, Carmen Azqueta, Marta Rodriguez-Aliberas, Gloria Soria, Nuria Martinez, Eva Alonso, Elisenda Farssac, Alejandro Madrigal, Jesus Fernandez-Sojo, Paolo Rebulla, Sergio Querol
{"title":"Quality and stability studies of red blood cell concentrates from umbilical cord blood compared to their adult counterparts.","authors":"Dinara Samarkanova, Margarita Codinach, Gemma Aran, Mar Guitart, Elena Valdivia, Lluis Martorell, Carmen Azqueta, Marta Rodriguez-Aliberas, Gloria Soria, Nuria Martinez, Eva Alonso, Elisenda Farssac, Alejandro Madrigal, Jesus Fernandez-Sojo, Paolo Rebulla, Sergio Querol","doi":"10.2450/BloodTransfus.761","DOIUrl":"https://doi.org/10.2450/BloodTransfus.761","url":null,"abstract":"<p><strong>Background: </strong>Prematurity is a significant health issue due to its incidence and associated complications. Anemia is common in extremely preterm infants (EPI) and often requires transfusions. Red blood cells (RBC) from adult blood (AB) donors have been linked to oxygen-related complications in EPI, leading to the exploration of cord blood (CB) as an alternative source. However, standardization of CB-RBC manufacturing and comparison with AB-RBC characteristics are necessary before clinical studies can be conducted.</p><p><strong>Materials and methods: </strong>This study investigated the quality and characteristics of leukoreduced, gamma-irradiated CB-RBC obtained using a commercial closed system from CB donations not meeting hematopoietic transplantation criteria. CB-RBC units were compared with AB-RBC units, both stored in saline-adenine-glucose-mannitol (SAGM). Various parameters, including hematological and biochemical characteristics, pH, 2,3-DPG levels, blood gases and potential toxicants, were evaluated during storage.</p><p><strong>Results: </strong>CB-RBC units had acceptable initial quality parameters and a hematocrit (55±2%) comparable to AB-RBC. The main finding during storage was a faster rise in hemolysis compared to AB-RBC. Potassium (K+) significantly increased during storage in both sources. As expected, glucose levels decreased, and conversely, lactate levels increased, indicating similar patterns of anaerobic glycolysis during storage. pH decreased, affecting the oxygen dissociation curve due to reduced 2,3-DPG levels. After irradiation at 14 days of storage, CB-RBC were less stable as hemolysis and K+ significantly increased compared to AB-RBC at 24 hours. Phthalate concentrations, indicative of plasticizers, increased during storage, but significantly less in CB compared to AB-RBC. Most metals measured were within acceptable ranges.</p><p><strong>Discussion: </strong>The quality of CB-RBC during storage is primarily influenced by levels of hemolysis and extracellular K+ content. Based on the analyzed parameters, we suggest that the expiration date for CB-RBC stored with SAGM should be set at 14 days, with transfusion occurring within <24 hours after irradiation.</p>","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141972197","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
DENV outbreak in Italy: the impact on the National Transfusion Network. 意大利的 DENV 疫情:对国家输血网络的影响。
IF 2.4 3区 医学
Blood Transfusion Pub Date : 2024-07-30 DOI: 10.2450/BloodTransfus.696
Ilaria Pati, Giulio Pisani, Flavia Riccardo, Giulietta Venturi, Vincenzo De Angelis
{"title":"DENV outbreak in Italy: the impact on the National Transfusion Network.","authors":"Ilaria Pati, Giulio Pisani, Flavia Riccardo, Giulietta Venturi, Vincenzo De Angelis","doi":"10.2450/BloodTransfus.696","DOIUrl":"10.2450/BloodTransfus.696","url":null,"abstract":"","PeriodicalId":49260,"journal":{"name":"Blood Transfusion","volume":" ","pages":"365-366"},"PeriodicalIF":2.4,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11251834/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138812043","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
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