Background: There is considerable heterogeneity in cell handling practices for hematopoietic stem cell transplantation in cell processing centers in Spain. The European Directorate for the Quality of Medicines and international standards are not intended to establish best practices or to include all procedures; therefore, each cell processing laboratory must define its own practices and procedures.
Methods: A survey was conducted to better understand the differences among cell processing laboratories in Spain in terms of type of facilities and equipment available, service portfolio, staff, informatics systems, product handling, environmental and product quality control tests, batch release criteria, storage and shipping conditions, and criteria for product disposal or recall, to identify areas for harmonization.
Adoptive cell therapy using virus-specific T cells (VST) is a strategy for treating common opportunistic viral infections after transplantation, particularly when these infections do not resolve through antiviral drug therapy. The availability of third-party healthy donors allows for the immediate use of cells for allogeneic therapy in cases where patients lack an appropriate donor. Here, we present the creation of a cell donor registry of human leukocyte antigen (HLA)-typed blood donors, REDOCEL, a strategic initiative to ensure the availability of compatible cells for donation when needed.
View Article and Find Full Text PDFTransfusion medicine requires meticulous record keeping from the time a blood donation is made to the time a patient receives a transfusion. As such, blood collection establishments and processing laboratories generate large amounts of data. This data must be managed, analyzed, and visualized appropriately to ensure safety of the blood supply.
View Article and Find Full Text PDFAnelloviruses represent the major and most diverse component of the healthy human virome, referred to as the anellome. In this study, we determined the anellome of 50 blood donors, forming two sex- and age-matched groups. Anelloviruses were detected in 86% of the donors.
View Article and Find Full Text PDFObjective: Arboviruses are emerging as a relevant threat to transfusion safety. Pathogen inactivation methods (PIMs) may reduce the risk of transmission through transfusion, as long as they meet minimum standards for effectiveness. This study aims to assess the log reduction of viral load achieved with different PIMs, according to the blood product they are used on and the arbovirus targeted.
View Article and Find Full Text PDFMetagenomics is greatly improving our ability to discover new viruses, as well as their possible associations with disease. However, metagenomics has also changed our understanding of viruses in general. The vast expansion of currently known viral diversity has revealed a large fraction of non-pathogenic viruses, and offers a new perspective in which viruses function as important components of many ecosystems.
View Article and Find Full Text PDFPurpose: The aim of this paper is to describe the tests carried out on a SRSMapCheck array, to verify its reliability and sensitivity for quality assurance (QA) of high gradient treatments as an alternative system to the use of high spatial resolution detectors, such as gafchromic film, whose processing requires meticulous and time-consuming procedures.
Methods: In an initial step, general functionality tests were carried out to verify that the equipment meets the manufacturer's specifications. A study of the accuracy of the application of correction factors to compensate for variation in detector response due to dose rate, field size and beam angle incidence has been included.
Background: COVID-19 convalescent plasma (CCP) is an experimental treatment against SARS-CoV-2. Although there has so far been no evidence of transmission through transfusion, pathogen reduction technologies (PRT) have been applied to CCP to mitigate risk of infectious disease. This study aims to assess the impact of methylene blue (MB) plus visible light PRT on the virus-neutralising activity of the specific antibodies against SARS-CoV-2.
View Article and Find Full Text PDFHuman blood metagenomics has revealed the presence of different types of viruses in apparently healthy subjects. By far, anelloviruses constitute the viral family that is more frequently found in human blood, although amplification biases and contaminations pose a major challenge in this field. To investigate this further, we subjected pooled plasma samples from 120 healthy donors in Spain to high-speed centrifugation, RNA and DNA extraction, random amplification, and massive parallel sequencing.
View Article and Find Full Text PDFCellular and humoral response to acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections is on focus of research. We evaluate herein the feasibility of expanding virus-specific T cells (VST) against SARS-CoV-2 ex vivo through a standard protocol proven effective for other viruses. The experiment was performed in three different donors' scenarios: (a) SARS-CoV-2 asymptomatic infection/negative serology, (b) SARS-CoV-2 symptomatic infection/positive serology, and (c) no history of SARS-CoV-2 infection/negative serology.
View Article and Find Full Text PDFIntroduction: Since the outbreak of coronavirus disease 2019 (COVID-19) pandemic, healthcare systems have focused their efforts into finding a treatment to avoid the fatal outcomes of severe acute respiratory syndrome due to coronavirus‑2 (SARS-CoV-2). Benefits and risks of systemic treatments remain unclear, with multiple clinical trials still ongoing. Radiotherapy could play a role in reducing the inflammatory response in the lungs and relieve life-threatening symptoms.
View Article and Find Full Text PDFThe use of autologous bone flap for cranioplasty after decompressive craniectomy is a widely used strategy that allows alleviating health expenses. When the patient has recovered from the primary insult, the cranioplasty restores protection and cosmesis, recovering fluid dynamics and improving neurological status. During this time, the bone flap must be stored, but there is a lack of standardization of tissue banking practices for this aim.
View Article and Find Full Text PDFStandards on tissue banking determine the need of microbiological monitoring during critical steps (recovery, processing, storage, and transplantation). This information will be useful for both discarding contaminated tissues or risk analysis (in case of recipient infection). In this study, we show the case of a multiorgan-multitissue donor colonized by Candida auris.
View Article and Find Full Text PDFCryopreservation of hematopoietic stem cells (HSC) involves slow rate cooling in the presence of a cryoprotectant (DMSO) to avoid the damaging effects of intracellular ice formation. The infusion of DMSO with the thawed product has been related to adverse events. Reduction of DMSO content by washing the HSCs after thawing has been suggested as a method to avoid infusion-related side-effects.
View Article and Find Full Text PDFDuring the COVID-19 pandemic, Spain declared a 'state of alarm' on 14 March 2020. In our Radiation Oncology Department, experienced in administering hypofractionated treatments (partial irradiation in breast cancer, moderate hypofractionation in localized prostate cancer, etc), we have increased the hypofractionated treatment indications. We are only deferring the start of non-urgent treatments such as prostate tumours under androgen deprivation or benign brain tumours which are candidates for radiosurgery such as meningiomas or acoustic neuroma.
View Article and Find Full Text PDFOne of the most important risks to be controlled in tissue banking is the infection associated with the clinical use of auto- and allografts. Thus, tissue disinfection protocols are used, in addition to processing in controlled environments. For this purpose, combinations of antibiotics are designed to ensure a broad spectrum of antimicrobial activity.
View Article and Find Full Text PDFThe possibility to use CCR5-∆32 umbilical cord blood to cure HIV infection in patients in need of a hematopoietic transplant has been suggested. The less stringent HLA compatibility needed in this type of transplant facilitates the search of a suitable donor having the CCR5-∆32 mutation. To achieve an inventory of CCR5-∆32 cord blood units, the 20,236 best cell quality units of the Spanish Registry were genotyped.
View Article and Find Full Text PDFThe implementation of nucleic acid testing in donor screening has improved the safety of tissue allografts. Although infectious disease transmission can be considered a rare event, the detection of occult hepatitis B infection remains challenging. The studies concerning this risk are mainly based on testing blood specimens.
View Article and Find Full Text PDFBackground: Diverse variables are involved in apheresis platelet collection, processing and storage. This survey shows how these are realized in Spain.
Method: An analysis of collected data was performed in a questionnaire completed by ten Transfusion Centers (TC) which perform between 50 and 520 apheresis procedures per month.
Background: The risk of transfusion-transmitted infection (TTI) has been minimized by introduction of nucleic acid testing (NAT) and pathogen inactivation (PI). This case report describes transmission of human immunodeficiency virus Type 1 (HIV-1) to two recipients despite these measures.
Study Design And Methods: In March 2009 a possible TTI of HIV-1 was identified in a patient that had received pooled buffy coat platelet concentrate (BC-PLT) in November 2005.
Several plasma pathogen reduction technologies (PRT) are currently available. We evaluated three plasma PRT processes: Cerus Amotosalen (AM), Terumo BCT riboflavin (RB) and Macopharma methylene blue (MB). RB treatment resulted in the shortest overall processing time and in the smallest volume loss (1%) and MB treatment in the largest volume loss (8%).
View Article and Find Full Text PDFBiol Blood Marrow Transplant
November 2014
Total nucleated (TNCs) and CD34(+) cells are considered major determinants of outcome after umbilical cord blood (UCB) transplantation but the effect of other cell subtypes present in the graft is unknown. This single-center cohort study included patients with hematological malignancies who received UCB transplantation after a myeloablative conditioning regimen. UCB units were primarily selected according to cell content, both TNCs and CD34(+) cells, and also according to the degree of HLA matching.
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