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Pan K, Zhu Y, Chen P, Yang K, Chen Y, Wang Y, Dai Z, Huang Z, Zhong P, Zhao X, Fan S, Ning L, Zhang J, Chen P. Biological functions and biomedical applications of extracellular vesicles derived from blood cells. Free Radic Biol Med 2024; 222:43-61. [PMID: 38848784 DOI: 10.1016/j.freeradbiomed.2024.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/26/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
There is a growing interest in using extracellular vesicles (EVs) for therapeutic applications. EVs are composed of cytoplasmic proteins and nucleic acids and an external lipid bilayer containing transmembrane proteins on their surfaces. EVs can alter the state of the target cells by interacting with the receptor ligand of the target cell or by being internalised by the target cell. Blood cells are the primary source of EVs, and 1 μL of plasma contains approximately 1.5 × 107 EVs. Owing to their easy acquisition and the avoidance of cell amplification in vitro, using blood cells as a source of therapeutic EVs has promising clinical application prospects. This review summarises the characteristics and biological functions of EVs derived from different blood cell types (platelets, erythrocytes, and leukocytes) and analyses the prospects and challenges of using them for clinical therapeutic applications. In summary, blood cell-derived EVs can regulate different cell types such as immune cells (macrophages, T cells, and dendritic cells), stem cells, and somatic cells, and play a role in intercellular communication, immune regulation, and cell proliferation. Overall, blood cell-derived EVs have the potential for use in vascular diseases, inflammatory diseases, degenerative diseases, and injuries. To promote the clinical translation of blood cell-derived EVs, researchers need to perform further studies on EVs in terms of scalable and reproducible isolation technology, quality control, safety, stability and storage, regulatory issues, cost-effectiveness, and long-term efficacy.
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Affiliation(s)
- Kaifeng Pan
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, China; Key Laboratory of Mechanism Research and Precision Repair of Orthopaedic Trauma and Aging Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310016, China
| | - Yiwei Zhu
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, China; Key Laboratory of Mechanism Research and Precision Repair of Orthopaedic Trauma and Aging Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310016, China
| | - Pengyu Chen
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, China; Key Laboratory of Mechanism Research and Precision Repair of Orthopaedic Trauma and Aging Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310016, China
| | - Ke Yang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, China; Key Laboratory of Mechanism Research and Precision Repair of Orthopaedic Trauma and Aging Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310016, China
| | - Yiyu Chen
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, China; Key Laboratory of Mechanism Research and Precision Repair of Orthopaedic Trauma and Aging Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310016, China
| | - Yongcheng Wang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, China; Key Laboratory of Mechanism Research and Precision Repair of Orthopaedic Trauma and Aging Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310016, China
| | - Zhanqiu Dai
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, China; Key Laboratory of Mechanism Research and Precision Repair of Orthopaedic Trauma and Aging Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310016, China; Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325088, China
| | - Zhenxiang Huang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, China; Key Laboratory of Mechanism Research and Precision Repair of Orthopaedic Trauma and Aging Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310016, China
| | - Peiyu Zhong
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, China; Key Laboratory of Mechanism Research and Precision Repair of Orthopaedic Trauma and Aging Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310016, China
| | - Xing Zhao
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, China; Key Laboratory of Mechanism Research and Precision Repair of Orthopaedic Trauma and Aging Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310016, China.
| | - Shunwu Fan
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, China; Key Laboratory of Mechanism Research and Precision Repair of Orthopaedic Trauma and Aging Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310016, China.
| | - Lei Ning
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, China; Key Laboratory of Mechanism Research and Precision Repair of Orthopaedic Trauma and Aging Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310016, China.
| | - Jianfeng Zhang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, China; Key Laboratory of Mechanism Research and Precision Repair of Orthopaedic Trauma and Aging Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310016, China.
| | - Pengfei Chen
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310016, China; Key Laboratory of Mechanism Research and Precision Repair of Orthopaedic Trauma and Aging Diseases of Zhejiang Province, Hangzhou, Zhejiang, 310016, China.
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Inusa BP, Atoyebi W, Andemariam B, Hourani JN, Omert L. Global burden of transfusion in sickle cell disease. Transfus Apher Sci 2023; 62:103764. [PMID: 37541800 DOI: 10.1016/j.transci.2023.103764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 07/14/2023] [Accepted: 07/16/2023] [Indexed: 08/06/2023]
Abstract
Sickle cell disease (SCD) is the most common hereditary hemoglobinopathy. The underlying pathophysiology of the red blood cell (RBC) leads to pan-systemic complications which manifest at an early age. While curative and disease-modifying treatments exist for SCD, a key intervention in the management and treatment of SCD is RBC transfusion, which can alleviate or prevent many complications. SCD patients often require chronic RBC transfusion therapy which can result in complications, such as iron overload, alloimmunization and infection. In low- and middle-income countries (LMICs), SCD patients lack appropriate access to healthcare such as newborn screening, health education, prophylaxis for infection, and treatments to reduce both mortality and SCD-related adverse effects. Poor access to RBCs for transfusion, coupled with donated blood not meeting safety standards set by the World Health Organization, presents a significant barrier for patients requiring chronic transfusions in LMICs. Unmet needs associated with blood collection, blood component processing and recipient matching all pose a serious problem in many LMICs, although this varies depending on geographic location, political organizations and economy. This review aims to provide an overview of the global burden of SCD, focusing on the availability of current treatments and the burden of chronic RBC transfusions in patients with SCD.
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Affiliation(s)
- Baba Pd Inusa
- Guy's and Saint Thomas' NHS Foundation Trust, London, UK.
| | | | - Biree Andemariam
- New England Sickle Cell Institute, University of Connecticut Health, Farmington, CT, USA
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Red Blood Cell-Conditioned Media from Non-Alcoholic Fatty Liver Disease Patients Contain Increased MCP1 and Induce TNF-α Release. Rep Biochem Mol Biol 2022; 11:54-62. [PMID: 35765536 PMCID: PMC9208556 DOI: 10.52547/rbmb.11.1.54] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 05/12/2021] [Indexed: 01/11/2023]
Abstract
Background Non-alcoholic fatty liver disease (NAFLD) constitutes a global pandemic. An intricate network among cytokines and lipids possesses a central role in NAFLD pathogenesis. Red blood cells comprise an important source of both cytokines and signaling lipids and have an important role in molecular crosstalk during immunometabolic deregulation. However, their role in NAFLD has not been thoroughly investigated. Methods Conditioned media from erythrocytes derived from 10 NAFLD patients (4 men, 6 women, aged 57.875±15.16) and 10 healthy controls (4 men, 6 women, aged 39.3±15.55) was analyzed for the cytokines IFN-γ, TNF-α, CCL2, CCL5, IL-8, IL-1β, IL-12p40, IL-17, MIP-1β, the signaling lipids sphingosine-1-phosphate (S1P) and lysophosphatidic acid (LPA), and cholesterol. Their effect on the cytokine profile released by RAW 264.7 macrophages was also studied. Results MCP1 levels were greater in conditioned growth medium from NAFLD patient erythrocytes than in that from healthy controls (37±40 vs 6.51±5.63 pg/ml). No statistically significant differences were found between patients and healthy controls with regard to S1P, LPA, cholesterol, or eight other cytokines. TNF-a release by RAW 264.7 cells was greater after incubation with patient-derived erythrocyte-conditioned medium than in medium without RAW 264.7 cells from either healthy or NAFLD subjects. Conclusion Erythrocytes may contribute to liver infiltration by monocytes, and macrophage activation, partially due to CCL2 release, in the context of NAFLD..
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Haiyambo DH, Aleksenko L, Mumbengegwi D, Bock R, Uusiku P, Malleret B, Rénia L, Quaye IK. Children with Plasmodium vivax infection previously observed in Namibia, were Duffy negative and carried a c.136G > A mutation. BMC Infect Dis 2021; 21:856. [PMID: 34418990 PMCID: PMC8380386 DOI: 10.1186/s12879-021-06573-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 08/13/2021] [Indexed: 11/10/2022] Open
Abstract
Background In a previous study, using a molecular approach, we reported the presence of P. vivax in Namibia. Here, we have extended our investigation to the Duffy antigen genetic profile of individuals of the same cohort with and without Plasmodium infections. Methods Participants with P. vivax (n = 3), P. falciparum (n = 23) mono-infections and co-infections of P. vivax/P. falciparum (n = 4), and P. falciparum/P. ovale (n = 3) were selected from seven regions. Participants with similar age but without any Plasmodium infections (n = 47) were also selected from all the regions. Duffy allelic profile was examined using standard PCR followed by sequencing of amplified products. Sequenced samples were also examined for the presence or absence of G125A mutation in codon 42, exon 2. Results All individuals tested carried the − 67 T > C mutation. However, while all P. vivax infected participants carried the c.G125A mutation, 7/28 P. falciparum infected participants and 9/41 of uninfected participants did not have the c.G125A mutation. The exon 2 region surrounding codon 42, had a c.136G > A mutation that was present in all P. vivax infections. The odds ratio for lack of this mutation with P. vivax infections was (OR 0.015, 95% CI 0.001–0.176; p = 0.001). Conclusion We conclude that P. vivax infections previously reported in Namibia, occurred in Duffy negative participants, carrying the G125A mutation in codon 42. The role of the additional mutation c.136 G > A in exon 2 in P. vivax infections, will require further investigations.
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Affiliation(s)
- Daniel Hosea Haiyambo
- Department of Biochemistry and Microbiology, University of Namibia School of Medicine, Windhoek, Namibia
| | - Larysa Aleksenko
- Department of Clinical Sciences, University of Lund, Lund, Sweden
| | - Davies Mumbengegwi
- Multidisciplinary Research Center, University of Namibia, Windhoek, Namibia
| | - Ronnie Bock
- Department of Biology, University of Namibia, Windhoek, Namibia
| | - Petrina Uusiku
- Ministry of Health and Social Services Department of Biology, National Vector Borne Disease Control Program, Windhoek, Namibia
| | - Benoit Malleret
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Immunology Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore, Singapore.,Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore
| | - Laurent Rénia
- A*STAR ID Labs, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Road, Singapore, 308232, Singapore
| | - Isaac Kweku Quaye
- Faculty of Engineering, Computer and Applied Sciences, Regent University College of Science and Technology, Dansoman, P. O. Box DS 1636, Accra, Ghana.
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Igami K, Uchiumi T, Ueda S, Kamioka K, Setoyama D, Gotoh K, Akimoto M, Matsumoto S, Kang D. Characterization and function of medium and large extracellular vesicles from plasma and urine by surface antigens and Annexin V. PEERJ ANALYTICAL CHEMISTRY 2020. [DOI: 10.7717/peerj-achem.4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background
Extracellular vesicles (EVs) are released by most cell types and are involved in multiple basic biological processes. Medium/large EVs (m/lEVs), which are of a different size from exosomes, play an important role in the coagulation in blood, and are secreted from cancer cells, etc., suggesting functions related to malignant transformation. The m/lEVs levels in blood or urine may help unravel pathophysiological findings in many diseases. However, it remains unclear how many naturally-occurring m/lEV subtypes exist as well as how their characteristics and functions differ from one another.
Methods
We used the blood and urinal sample from each 10 healthy donors for analysis. Using a flow cytometer, we focus on characterization of EVs with large sizes (>200 nm) that are different from exosomes. We also searched for a membrane protein for characterization with a flow cytometer using shotgun proteomics. We then identified m/lEVs pelleted from plasma and urine samples by differential centrifugation and characterized by flow cytometry.
Results
Using proteomic profiling, we identified several proteins involved in m/lEV biogenesis including adhesion molecules, peptidases and exocytosis regulatory proteins. In healthy human plasma, we could distinguish m/lEVs derived from platelets, erythrocytes, monocytes/macrophages, T and B cells, and vascular endothelial cells with more than two positive surface antigens. The ratio of phosphatidylserine appearing on the membrane surface differed depending on the cell-derived m/lEVs. In urine, 50% of m/lEVs were Annexin V negative but contained various membrane peptidases derived from renal tubular villi. Urinary m/lEVs, but not plasma m/lEVs, showed peptidase activity. The knowledge of the new characteristics is considered to be useful as a diagnostic material and the newly developed method suggests the possibility of clinical application.
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Affiliation(s)
- Ko Igami
- Department of Clinical Chemistry and Laboratory Medicine, Kyushu University Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- Kyushu Pro Search Limited Liability Partnership, Fukuoka, Japan
- Business Management Division, Clinical Laboratory Business Segment, LSI Medience Corporation, Tokyo, Japan
| | - Takeshi Uchiumi
- Department of Clinical Chemistry and Laboratory Medicine, Kyushu University Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- Clinical Chemistry, Division of Biochemical Science and Technology, Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Saori Ueda
- Department of Clinical Chemistry and Laboratory Medicine, Kyushu University Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kazuyuki Kamioka
- Kyushu Pro Search Limited Liability Partnership, Fukuoka, Japan
- Department of Medical Solutions, LSI Medience Corporation, Tokyo, Japan
| | - Daiki Setoyama
- Department of Clinical Chemistry and Laboratory Medicine, Kyushu University Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kazuhito Gotoh
- Department of Clinical Chemistry and Laboratory Medicine, Kyushu University Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masaru Akimoto
- Department of Clinical Chemistry and Laboratory Medicine, Kyushu University Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shinya Matsumoto
- Department of Clinical Chemistry and Laboratory Medicine, Kyushu University Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Dongchon Kang
- Department of Clinical Chemistry and Laboratory Medicine, Kyushu University Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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The emerging role of red blood cells in cytokine signalling and modulating immune cells. Blood Rev 2019; 41:100644. [PMID: 31812320 DOI: 10.1016/j.blre.2019.100644] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 11/13/2019] [Accepted: 11/22/2019] [Indexed: 02/07/2023]
Abstract
For many years red blood cells have been described as inert bystanders rather than participants in intercellular signalling, immune function, and inflammatory processes. However, studies are now reporting that red blood cells from healthy individuals regulate immune cell activity and maturation, and red blood cells from disease cohorts are dysfunctional. These cells have now been shown to bind more than 50 cytokines and have been described as a sink for these molecules, and the loss of this activity has been correlated with disease progression. In this review, we summarise what is currently understood about the role of red blood cells in cytokine signalling and in modulating the activity of immune cells. We also discuss the implications of these findings for transfusion medicine and in furthering our understanding of anaemia of chronic inflammation. By bringing these disparate units of work together, we aim to shine a light on an area that requires significantly more investigation.
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Yoshida T, Prudent M, D’Alessandro A. Red blood cell storage lesion: causes and potential clinical consequences. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2019; 17:27-52. [PMID: 30653459 PMCID: PMC6343598 DOI: 10.2450/2019.0217-18] [Citation(s) in RCA: 143] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 12/06/2018] [Indexed: 11/21/2022]
Abstract
Red blood cells (RBCs) are a specialised organ that enabled the evolution of multicellular organisms by supplying a sufficient quantity of oxygen to cells that cannot obtain oxygen directly from ambient air via diffusion, thereby fueling oxidative phosphorylation for highly efficient energy production. RBCs have evolved to optimally serve this purpose by packing high concentrations of haemoglobin in their cytosol and shedding nuclei and other organelles. During their circulatory lifetimes in humans of approximately 120 days, RBCs are poised to transport oxygen by metabolic/redox enzymes until they accumulate damage and are promptly removed by the reticuloendothelial system. These elaborate evolutionary adaptions, however, are no longer effective when RBCs are removed from the circulation and stored hypothermically in blood banks, where they develop storage-induced damages ("storage lesions") that accumulate over the shelf life of stored RBCs. This review attempts to provide a comprehensive view of the literature on the subject of RBC storage lesions and their purported clinical consequences by incorporating the recent exponential growth in available data obtained from "omics" technologies in addition to that published in more traditional literature. To summarise this vast amount of information, the subject is organised in figures with four panels: i) root causes; ii) RBC storage lesions; iii) physiological effects; and iv) reported outcomes. The driving forces for the development of the storage lesions can be roughly classified into two root causes: i) metabolite accumulation/depletion, the target of various interventions (additive solutions) developed since the inception of blood banking; and ii) oxidative damages, which have been reported for decades but not addressed systemically until recently. Downstream physiological consequences of these storage lesions, derived mainly by in vitro studies, are described, and further potential links to clinical consequences are discussed. Interventions to postpone the onset and mitigate the extent of the storage lesion development are briefly reviewed. In addition, we briefly discuss the results from recent randomised controlled trials on the age of stored blood and clinical outcomes of transfusion.
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Affiliation(s)
| | - Michel Prudent
- Laboratoire de Recherche sur les Produits Sanguins, Transfusion Interrégionale CRS, Epalinges, Switzerland
- Faculté de Biologie et de Médicine, Université de Lausanne, Lausanne, Switzerland
| | - Angelo D’Alessandro
- Department of Biochemistry and Molecular Genetics University of Colorado, Denver, CO, United States of America
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Raeven P, Zipperle J, Drechsler S. Extracellular Vesicles as Markers and Mediators in Sepsis. Am J Cancer Res 2018; 8:3348-3365. [PMID: 29930734 PMCID: PMC6010985 DOI: 10.7150/thno.23453] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 03/14/2018] [Indexed: 01/28/2023] Open
Abstract
Sepsis is defined as life-threatening organ dysfunction caused by a dysregulated host response to infection. It remains a highly lethal condition in which current tools for early diagnosis and therapeutic decision-making are far from ideal. Extracellular vesicles (EVs), 30 nm to several micrometers in size, are released from cells upon activation and apoptosis and express membrane epitopes specific for their parental cells. Since their discovery two decades ago, their role as biomarkers and mediators in various diseases has been intensively studied. However, their potential importance in the sepsis syndrome has gained attention only recently. Sepsis and EVs are both complex fields in which standardization has long been overdue. In this review, several topics are discussed. First, we review current studies on EVs in septic patients with emphasis on their variable quality and clinical utility. Second, we discuss the diagnostic and therapeutic potential of EVs as well as their role as facilitators of cell communication via micro RNA and the relevance of micro-organism-derived EVs. Third, we give an overview over the potential beneficial but also detrimental roles of EVs in sepsis. Finally, we focus on the role of EVs in selected intensive care scenarios such as coagulopathy, mechanical ventilation and blood transfusion. Overall, the prospect for EV use in septic patients is bright, ranging from rapid and precise (point-of-care) diagnostics, prevention of harmful iatrogenic interventions, to using EVs as guides of individualized therapy. Before the above is achieved, however, the EV research field requires reliable standardization of the current methods and development of new analytical procedures that can close the existing technological gaps.
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Liu S, Li Z, Liu Z, Hu Z, Zheng G. Blood transfusion and risk of atrial fibrillation after coronary artery bypass graft surgery: A meta-analysis of cohort studies. Medicine (Baltimore) 2018. [PMID: 29517692 PMCID: PMC5882418 DOI: 10.1097/md.0000000000009700] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The aim of this study was to systematically evaluate the effect of blood transfusion (BT) on postoperative atrial fibrillation (AF) in adult patients who had undergone coronary artery bypass grafting (CABG) surgery.PubMed, Embase, and Cochrane Library databases from inception to January 2017 were searched. Cohort studies were searched that evaluated the association between BT and the risk of postoperative AF in adult patients who had undergone CABG surgery. Study quality was assessed by using the Newcastle-Ottawa scale (NOS). A meta-analysis was performed with the random-effect model.Eight cohort studies involving 7401 AF cases and 31,069 participants were identified and included in our data analysis. The pooled odds ratio of postoperative AF in patients with BT was 1.45 (95% confidence interval, 1.26-1.67), with significant heterogeneity (P < .0001, I = 79%). Excluding one study that had an off-pump CABG did not significantly impact this result (odds ratio, 1.36; 95% confidence interval, 1.23-1.50; n = 7). To examine the stability of the primary results, we performed subgroup analyses. The association between BT and the risk of postoperative AF was similar, as determined in the stratified analyses conducted according to study design, type of surgery, and country.The findings of the present meta-analysis demonstrated a statistically significant increase in postoperative AF risk among adult patients with BT. Further prospective large-scale studies are needed to establish causality and to elucidate the underlying mechanisms.
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Red Blood Cell Transfusion and Surgical Site Infection After Colon Resection Surgery: A Cohort Study. Anesth Analg 2017; 125:1316-1321. [PMID: 28504993 DOI: 10.1213/ane.0000000000002099] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Surgical site infections (SSIs) after colon surgery remain a critical safety issue. Patients with an SSI have an increased risk of death, prolonged hospitalization, and increased costs of care. Red blood cell (RBC) transfusion is given during the perioperative period to increase blood oxygen delivery, but it is associated with complications, including infection. We hypothesized that RBC transfusion would be associated with increased SSI risk in patients undergoing colon resection surgery. METHODS A retrospective cohort study was performed using the 2014 National Surgical Quality Improvement Program participant use file. Patients who had colon resection surgery were identified using current procedural terminology codes. The association between perioperative RBC transfusion and superficial and deep incisional SSIs, organ space SSIs, and postoperative septic shock was modeled using logistic regression with propensity score analysis. RESULTS Of 23,388 patients who had colon resection surgery, 1845 (7.9%) received perioperative RBC transfusion. After controlling for confounders with propensity score analysis and inverse probability of treatment weighting, RBC transfusion had no apparent association with superficial incisional SSI (odds ratio [OR], 1.18; 99% confidence interval [CI], 0.48-2.88) or deep incisional SSI (OR, 1.47; 99% CI, 0.23-9.43). However, RBC transfusion appeared to be associated with increased risk of organ space SSI (OR, 2.93; 99% CI, 1.43-6.01) and septic shock (OR, 9.23; 99% CI, 3.53-24.09). CONCLUSIONS RBC transfusion has no apparent association with increased risk for incisional SSIs, but may be associated with increased risk for organ space SSI and septic shock after colon resection surgery.
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Abstract
Transfusion decision making (TDM) in the critically ill requires consideration of: (1) anemia tolerance, which is linked to active pathology and to physiologic reserve, (2) differences in donor RBC physiology from that of native RBCs, and (3) relative risk from anemia-attributable oxygen delivery failure vs hazards of transfusion, itself. Current approaches to TDM (e.g. hemoglobin thresholds) do not: (1) differentiate between patients with similar anemia, but dissimilar pathology/physiology, and (2) guide transfusion timing and amount to efficacy-based goals (other than resolution of hemoglobin thresholds). Here, we explore approaches to TDM that address the above gaps.
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Affiliation(s)
- Chris Markham
- Division of Critical Care Medicine, Department of Pediatrics, Washington University School of Medicine, McDonnell Pediatric Research Building, Campus Box 8208, 660 South Euclid Avenue, St Louis, MO 63110-1093, USA
| | - Sara Small
- Social Systems Design Laboratory, Brown School of Social Work, Washington University, Campus Box 1196, 1 Brookings Drive, St Louis, MO 63130, USA
| | - Peter Hovmand
- Social Systems Design Laboratory, Brown School of Social Work, Washington University, Campus Box 1196, 1 Brookings Drive, St Louis, MO 63130, USA
| | - Allan Doctor
- Division of Critical Care Medicine, Department of Pediatrics, Washington University School of Medicine, McDonnell Pediatric Research Building, Campus Box 8208, 660 South Euclid Avenue, St Louis, MO 63110-1093, USA.
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Abstract
Extracellular vesicles (EVs) can modulate the host immune response, executing both pro- and anti-inflammatory effects. As EVs increasingly gain attention as potential carriers for targeted gene and drug delivery, knowledge on the effects of EVs on the host immune response is important. This review will focus on the ability of EVs to trigger a pro-inflammatory host response by activating target cells. The overall view is that EVs can augment an inflammatory response, thereby potentially contributing to organ injury. This pro-inflammatory potential of EVs may hamper its use for therapeutic drug delivery. Whether removal of EVs as a means to reduce a pro-inflammatory or pro-coagulant response during hyper-inflammatory conditions is beneficial remains to be determined. Prior to any proposed therapeutic application, there is a need for further studies on the role of EVs in physiology and pathophysiology using improved detection and characterization methods to elucidate the roles of EVs in inflammatory conditions.
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Acid Sphingomyelinase Inhibition in Stored Erythrocytes Reduces Transfusion-Associated Lung Inflammation. Ann Surg 2017; 265:218-226. [PMID: 28009749 DOI: 10.1097/sla.0000000000001648] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
OBJECTIVE We aimed to identify the role of the enzyme acid sphingomyelinase in the aging of stored units of packed red blood cells (pRBCs) and subsequent lung inflammation after transfusion. SUMMARY BACKGROUND DATA Large volume pRBC transfusions are associated with multiple adverse clinical sequelae, including lung inflammation. Microparticles are formed in stored pRBCs over time and have been shown to contribute to lung inflammation after transfusion. METHODS Human and murine pRBCs were stored with or without amitriptyline, a functional inhibitor of acid sphingomyelinase, or obtained from acid sphingomyelinase-deficient mice, and lung inflammation was studied in mice receiving transfusions of pRBCs and microparticles isolated from these units. RESULTS Acid sphingomyelinase activity in pRBCs was associated with the formation of ceramide and the release of microparticles. Treatment of pRBCs with amitriptyline inhibited acid sphingomyelinase activity, ceramide accumulation, and microparticle production during pRBC storage. Transfusion of aged pRBCs or microparticles isolated from aged blood into mice caused lung inflammation. This was attenuated after transfusion of pRBCs treated with amitriptyline or from acid sphingomyelinase-deficient mice. CONCLUSIONS Acid sphingomyelinase inhibition in stored pRBCs offers a novel mechanism for improving the quality of stored blood.
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Goubran H, Sheridan D, Radosevic J, Burnouf T, Seghatchian J. Transfusion-related immunomodulation and cancer. Transfus Apher Sci 2017; 56:336-340. [PMID: 28606449 DOI: 10.1016/j.transci.2017.05.019] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Blood and blood-component therapy triggers immunological reactions in recipients. Transfusion-related immunomodulation [TRIM] is an important complex biological immune reaction to transfusion culminating in immunosuppression. The mechanisms underlying TRIM include the presence of residual leukocytes and apoptotic cells, the transfusion of immunosuppressive cytokines either present in donor components or generated during blood processing, the transfer of metabolically active growth factor-loaded microparticles and extracellular vesicles and the presence of free hemoglobin or extracellular vesicle-bound hemoglobin. TRIM variables include donor-specific factors as well as processing variables. TRIM may explain, at least in part, the controversial negative clinical outcomes observed in cancer patients receiving transfusion in the context of curative-intent surgeries. The use of novel technologies including metabolomics and proteomics on stored blood may pave the way for a deeper understanding of TRIM in general and its impact on cancer progression.
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Affiliation(s)
- Hadi Goubran
- Saskatoon Cancer Centre and College of Medicine, University of Saskatchewan, Saskatchewan, Canada.
| | - David Sheridan
- Saskatoon Cancer Centre and College of Medicine, University of Saskatchewan, Saskatchewan, Canada
| | | | - Thierry Burnouf
- Graduate Institute of Biological Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan; International PhD Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan
| | - Jerard Seghatchian
- International Consultancy in Blood Components Quality/Safety Improvement, Audit/Inspection and DDR Strategies, London, UK.
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McEntire MC, Wardrop KJ, Davis WC. Comparison of established and novel methods for the detection and enumeration of microparticles in canine stored erythrocyte concentrates for transfusion. Vet Clin Pathol 2016; 46:54-63. [DOI: 10.1111/vcp.12434] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Meredeth C. McEntire
- Veterinary Clinical Sciences Washington State University College of Veterinary Medicine Pullman WA USA
| | - K. Jane Wardrop
- Veterinary Clinical Sciences Washington State University College of Veterinary Medicine Pullman WA USA
| | - William C. Davis
- Veterinary Microbiology and Pathology Washington State University College of Veterinary Medicine Pullman WA USA
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Almizraq RJ, Seghatchian J, Acker JP. Extracellular vesicles in transfusion-related immunomodulation and the role of blood component manufacturing. Transfus Apher Sci 2016; 55:281-291. [DOI: 10.1016/j.transci.2016.10.018] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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17
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Li KY, Zheng L, Wang Q, Hu YW. Characteristics of erythrocyte-derived microvesicles and its relation with atherosclerosis. Atherosclerosis 2016; 255:140-144. [PMID: 27871771 DOI: 10.1016/j.atherosclerosis.2016.10.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 10/21/2016] [Accepted: 10/21/2016] [Indexed: 01/21/2023]
Abstract
Microvesicles are formed under many circumstances, especially in atheromatous plaques. Erythrocyte-derived microvesicles (ErMVs) have been proved to promote atherosclerosis by promoting hypercoagulation, mediating inflammation and inducing cell adhesion. Several clinical studies have reported potential roles of ErMVs in cardiovascular disease diagnosis, but the current understanding of ErMVs remains insufficient. In this paper, we will review current research on the formation and degradation of ErMVs and the possible effects of ErMVs in atherosclerosis, discuss potential clinical applications in cardiovascular disease, and hope to raise awareness of the relation with atherosclerosis.
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Affiliation(s)
- Kai-Yin Li
- Institute of Cardiovascular Disease, Key Laboratory for Arteriosclerology of Hunan Province, University of South China, Hengyang, Hunan, China
| | - Lei Zheng
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Qian Wang
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yan-Wei Hu
- Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
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18
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Antonelou MH, Seghatchian J. Update on extracellular vesicles inside red blood cell storage units: Adjust the sails closer to the new wind. Transfus Apher Sci 2016; 55:92-104. [DOI: 10.1016/j.transci.2016.07.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Risbano MG, Kanias T, Triulzi D, Donadee C, Barge S, Badlam J, Jain S, Belanger AM, Kim-Shapiro DB, Gladwin MT. Effects of Aged Stored Autologous Red Blood Cells on Human Endothelial Function. Am J Respir Crit Care Med 2016. [PMID: 26222884 DOI: 10.1164/rccm.201501-0145oc] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
RATIONALE A major abnormality that characterizes the red cell "storage lesion" is increased hemolysis and reduced red cell lifespan after infusion. Low levels of intravascular hemolysis after transfusion of aged stored red cells disrupt nitric oxide (NO) bioavailabity, via accelerated NO scavenging reaction with cell-free plasma hemoglobin. The degree of intravascular hemolysis post-transfusion and effects on endothelial-dependent vasodilation responses to acetylcholine have not been fully characterized in humans. OBJECTIVES To evaluate the effects of blood aged to the limits of Food and Drug Administration-approved storage time on the human microcirculation and endothelial function. METHODS Eighteen healthy individuals donated 1 U of leukopheresed red cells, divided and autologously transfused into the forearm brachial artery 5 and 42 days after blood donation. Blood samples were obtained from stored blood bag supernatants and the antecubital vein of the infusion arm. Forearm blood flow measurements were performed using strain-gauge plethysmography during transfusion, followed by testing of endothelium-dependent blood flow with increasing doses of intraarterial acetylcholine. MEASUREMENTS AND MAIN RESULTS We demonstrate that aged stored blood has higher levels of arginase-1 and cell-free plasma hemoglobin. Compared with 5-day blood, the transfusion of 42-day packed red cells decreases acetylcholine-dependent forearm blood flows. Intravascular venous levels of arginase-1 and cell-free plasma hemoglobin increase immediately after red cell transfusion, with more significant increases observed after infusion of 42-day-old blood. CONCLUSIONS We demonstrate that the transfusion of blood at the limits of Food and Drug Administration-approved storage has a significant effect on the forearm circulation and impairs endothelial function. Clinical trial registered with www.clinicaltrials.gov (NCT 01137656).
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Affiliation(s)
- Michael G Risbano
- 1 Division of Pulmonary Allergy and Critical Care Medicine, University of Pittsburgh and University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.,2 Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute
| | - Tamir Kanias
- 2 Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute
| | | | - Chenell Donadee
- 4 Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Suchitra Barge
- 1 Division of Pulmonary Allergy and Critical Care Medicine, University of Pittsburgh and University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Jessica Badlam
- 5 Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado, Denver, Colorado
| | - Shilpa Jain
- 6 Division of Hematology/Oncology, Women and Children's Hospital of Buffalo, Buffalo, New York; and
| | - Andrea M Belanger
- 7 Department of Physics, Wake Forest University, Winston Salem, North Carolina
| | | | - Mark T Gladwin
- 1 Division of Pulmonary Allergy and Critical Care Medicine, University of Pittsburgh and University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.,2 Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute
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Abstract
Interleukin-33 (IL-33) is a member of the IL-1 cytokine superfamily that potently drives production of a variety of cytokines and contributes to the pathogenesis of inflammatory diseases. The IL-33 is a nuclear protein and is released from apoptotic or necrotic cells. Serum IL-33 levels are increased in various diseases, such as atopic dermatitis, chronic hepatitis C infection, and asthma. Here, we show that red blood cells (RBCs) are one of the major sources of plasma IL-33. The IL-33 levels are significantly increased in supernatants from lysed RBCs. Plasma IL-33 levels are increased in patients during hemolysis, and plasma IL-33 levels show a positive correlation with degree of hemolysis. The IL-33 protein and messenger RNA levels were detected in the late stages of differentiation in ex vivo primary human erythroid progenitor cell cultures, suggesting that IL-33 is expressed during maturation of RBCs. Furthermore, hemoglobin depleted red cell lysates induced IL-8 expression in human epithelial cells. This effect was attenuated in IL-33 decoy receptor expressing cells and was enhanced in IL-33 receptor expressing cells. These results suggest that erythroid progenitor cells produce IL-33 and circulating RBCs represent a major source of IL-33 that is released upon hemolysis.
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Hoehn RS, Jernigan PL, Chang AL, Edwards MJ, Pritts TA. Molecular mechanisms of erythrocyte aging. Biol Chem 2016; 396:621-31. [PMID: 25803075 DOI: 10.1515/hsz-2014-0292] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 03/10/2015] [Indexed: 01/08/2023]
Abstract
Anemia and hemorrhagic shock are leading causes of morbidity and mortality worldwide, and transfusion of human blood products is the ideal treatment for these conditions. As human erythrocytes age during storage in blood banks they undergo many biochemical and structural changes, termed the red blood cell 'storage lesion'. Specifically, ATP and pH levels decrease as metabolic end products, oxidative stress, cytokines, and cell-free hemoglobin increase. Also, membrane proteins and lipids undergo conformational and organizational changes that result in membrane loss, viscoelastic changes and microparticle formation. As a result, transfusion of aged blood is associated with a host of adverse consequences such as decreased tissue perfusion, increased risk of infection, and increased mortality. This review summarizes current research detailing the known parts of the erythrocyte storage lesion and their physiologic consequences.
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Straat M, Böing AN, Tuip-De Boer A, Nieuwland R, Juffermans NP. Extracellular Vesicles from Red Blood Cell Products Induce a Strong Pro-Inflammatory Host Response, Dependent on Both Numbers and Storage Duration. Transfus Med Hemother 2015; 43:302-305. [PMID: 27721707 DOI: 10.1159/000442681] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 10/28/2015] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Transfusion of red blood cells (RBCs) is associated with adverse outcome, but the causative factor is unknown. Extracellular vesicles (EVs) have pro-inflammatory properties. We hypothesized that EVs released from both fresh and stored RBC products can induce a host inflammatory response in a dose-dependent manner. METHODS Whole blood was incubated with supernatant from RBC units stored for different time periods, either containing (different numbers of) EVs or depleted from EVs. RESULTS Incubation with both fresh and stored supernatant containing EVs induced a strong host response with production of TNF, IL-6 and IL-8. In supernatant depleted from EVs, this host response was completely abrogated. IL-10 levels were not affected. EV-induced host response was both dependent on the number of EVs as well as on storage time. CONCLUSIONS EVs from both fresh and stored RBC units illicit a strong inflammatory host response in recipients and may therefore contribute to adverse outcome of RBC transfusion.
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Affiliation(s)
- Marleen Straat
- Department of Intensive Care Medicine, Academic Medical Center, Amsterdam, The Netherlands; Laboratory of Experimental Intensive Care and Anesthesiology, Academic Medical Center, Amsterdam, The Netherlands
| | - Anita N Böing
- Laboratory of Experimental Clinical Chemistry, Academic Medical Center, Amsterdam, The Netherlands
| | - Anita Tuip-De Boer
- Laboratory of Experimental Intensive Care and Anesthesiology, Academic Medical Center, Amsterdam, The Netherlands
| | - Rienk Nieuwland
- Laboratory of Experimental Clinical Chemistry, Academic Medical Center, Amsterdam, The Netherlands
| | - Nicole P Juffermans
- Department of Intensive Care Medicine, Academic Medical Center, Amsterdam, The Netherlands; Laboratory of Experimental Intensive Care and Anesthesiology, Academic Medical Center, Amsterdam, The Netherlands
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23
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Burnouf T, Chou ML, Goubran H, Cognasse F, Garraud O, Seghatchian J. An overview of the role of microparticles/microvesicles in blood components: Are they clinically beneficial or harmful? Transfus Apher Sci 2015; 53:137-45. [PMID: 26596959 DOI: 10.1016/j.transci.2015.10.010] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Blood cells and tissues generate heterogeneous populations of cell-derived vesicles, ranging from approximately 50 nm to 1 µm in diameter. Under normal physiological conditions and as an essential part of an energy-dependent natural process, microparticles (MPs) are continuously shed into the circulation from membranes of all viable cells such as megakaryocytes, platelets, red blood cells, white blood cells and endothelial cells. MP shedding can also be triggered by pathological activation of inflammatory processes and activation of coagulation or complement systems, or even by shear stress in the circulation. Structurally, MPs have a bilayered phospholipid structure exposing coagulant-active phosphatidylserine and expressing various membrane receptors, and they serve as cell-to-cell shuttles for bioactive molecules such as lipids, growth factors, microRNAs, and mitochondria. It was established that ex vivo processing of blood into its components, involving centrifugation, processing by various apheresis procedures, leucoreduction, pathogen reduction, and finally storage in different media and different types of blood bags, can impact MP generation and content. This is mostly due to exposure of the collected blood to anticoagulant/storage media and due to shear stresses or activation, contact with artificial surfaces, or exposure to various leucocyte-removal filters and pathogen-reduction treatments. Such artificially generated MPs, which are added to the original pool of MPs collected from the donor, may exhibit specific functional characteristics, as MPs are not an inert element of blood components. Not surprisingly, MPs' roles and functionality are therefore increasingly seen to be fully relevant to the field of transfusion medicine, and as a parameter of blood safety that must be considered in haemovigilance programmes. Continual advancements in assessment methods of MPs and storage lesions are gradually leading to a better understanding of the impacts of blood collection on MP generation, while clinical research should clarify links of MPs with transfusion reactions and certain clinical disorders. Harmonization and consensus in sampling protocols, sample handling and processing, and assessment methods are needed to achieve consensual interpretations. This review focuses on the role of MPs as an essential laboratory tool and as a most effective player in transfusion science and medicine and in health and disease.
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Affiliation(s)
- Thierry Burnouf
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei, Taiwan.
| | - Ming-Li Chou
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Hadi Goubran
- Saskatoon Cancer Centre, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Fabrice Cognasse
- Etablissement Français du Sang Auvergne-Loire, Saint-Etienne, France; GIMAP-EA3064, Université de Lyon, Saint Etienne, France
| | - Olivier Garraud
- Etablissement Français du Sang Auvergne-Loire, Saint-Etienne, France; Institut National de Transfusion Sanguine (INTS), Paris, France
| | - Jerard Seghatchian
- International Consultancy in Blood Components Quality/Safety, Audit/Inspection and DDR Strategy, London, UK.
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Suades R, Padró T, Vilahur G, Martin-Yuste V, Sabaté M, Sans-Roselló J, Sionis A, Badimon L. Growing thrombi release increased levels of CD235a(+) microparticles and decreased levels of activated platelet-derived microparticles. Validation in ST-elevation myocardial infarction patients. J Thromb Haemost 2015; 13:1776-86. [PMID: 26239059 DOI: 10.1111/jth.13065] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 07/20/2015] [Indexed: 12/23/2022]
Abstract
BACKGROUND Local fluid dynamics and exposed atherosclerotic lesions regulate thrombus formation. Activated cells in the attached thrombi release microparticles to the circulation (circulating microparticles [cMPs]); however, their phenotype is unknown. OBJECTIVES To investigate the specific phenotype of the cMPs released by growing thrombi. METHODS/PATIENTS cMPs released by thrombi growing in different well-characterized thrombogenic conditions were investigated. cMP contents just before and immediately after perfusion of the thrombogenic surfaces were analyzed by triple-labeling flow cytometry. cMPs were tested for their thrombin-generating capacity. The cMPs identified in the ex vivo perfusion experiments were validated in blood of ST-elevation myocardial infarction (STEMI) patients undergoing thrombectomy and percutaneous coronary intervention. Culprit coronary blood (STEMI-CCB) and peripheral artery blood (STEMI-PAB) were simultaneously analyzed and compared with peripheral artery blood from age-matched controls (C-PAB) and peripheral artery blood from patients who had recovered from acute coronary syndrome (ACS) (pSTEMI-PAB). RESULTS The levels of annexin V(+) cMPs significantly increased in blood collected after perfusion of the exposed thrombogenic surfaces. cMP release was directly related to the formed thrombus mass and the plasma procoagulant activity. Post-thrombus blood showed higher thrombin generation potential and contained higher levels of cMPs carrying glycophorin-A (CD235a(+) ; erythrocyte-derived microparticles [ErMPs]) than preperfusion blood (P < 0.05), whereas the levels of cMPs carrying activated and adhesion platelet markers were decreased. STEMI-CCB and STEMI-PAB had significantly higher ErMP levels than control blood (P < 0.005). ErMP levels were also significantly higher in STEMI-PAB than in pSTEMI-PAB, validating the experimental mechanistic studies and suggesting that ErMPs are markers of ongoing coronary thrombosis (C-statistics: 0.950; 95% confidence interval 0.889-1.000; P < 0.001). CONCLUSION Glycophorin-A-rich microparticles are released from evolving growing thrombi into the distal perfusing blood, and can be measured in peripheral blood. CD235a(+) cMPs may constitute a novel systemic biomarker of ongoing thrombosis.
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Affiliation(s)
- R Suades
- Cardiovascular Research Center, CSIC-ICCC, Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
| | - T Padró
- Cardiovascular Research Center, CSIC-ICCC, Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
| | - G Vilahur
- Cardiovascular Research Center, CSIC-ICCC, Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
| | - V Martin-Yuste
- Department of Interventional Cardiology, Hospital Clinic, Barcelona, Spain
| | - M Sabaté
- Department of Interventional Cardiology, Hospital Clinic, Barcelona, Spain
| | - J Sans-Roselló
- Acute and Intensive Cardiac Care Unit, Cardiology Department, Hospital Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
| | - A Sionis
- Acute and Intensive Cardiac Care Unit, Cardiology Department, Hospital Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
| | - L Badimon
- Cardiovascular Research Center, CSIC-ICCC, Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
- Cardiovascular Research Chair, UAB, Barcelona, Spain
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All plasma products are not created equal: Characterizing differences between plasma products. J Trauma Acute Care Surg 2015; 78:S18-25. [PMID: 26002258 DOI: 10.1097/ta.0000000000000629] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Plasma can be manufactured by multiple methods. Few studies have compared quality parameters between plasma products that may affect efficacy and safety. METHODS Four different plasma products were analyzed to include fresh frozen plasma (FFP), liquid plasma (LP), solvent detergent plasma (SDP), and a spray-dried, solvent detergent-treated plasma (SD-SDP) at multiple time points of storage. Parameters measured included red blood cell, platelet, and white blood cell counts; microparticle phenotypes; thrombin generation; and thrombelastography. These parameters were compared in 10 samples of each product. RESULTS SDP and SD-SDP contained the smallest number of residual cells compared with FFP and LP. Platelets were the most common residual cell in all products and were highest in LP. FFP contained the greatest number of residual red blood cells. Total microparticle counts were elevated in LP and FFP compared with SDP and SD-SDP. Cell-derived microparticles in both LP and FFP were mostly platelet in origin. Microparticle counts in SDP and SD-SDP were negligible. Thrombelastography results demonstrated similar thrombin, fibrinogen, and platelet function on Day 28 LP compared with Day 5 thawed FFP. Thrombin generation assays revealed that the total, lag time to, and peak thrombin formation were higher in SDP and SD-SDP compared with FFP and LP. All parameters in FFP and LP products were characterized by a large degree of variability. CONCLUSION The differences in cellular, microparticle, and functional hemostatic parameters measured between plasma products have the potential to affect efficacy and safety. Further study is needed to elucidate the potential immune effects of the cellular and microparticle differences noted as well as the clinical implications of altered thrombin generation kinetics in SD products.
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Desai PC, Deal AM, Pfaff ER, Qaqish B, Hebden LM, Park YA, Ataga KI. Alloimmunization is associated with older age of transfused red blood cells in sickle cell disease. Am J Hematol 2015; 90:691-5. [PMID: 25963831 DOI: 10.1002/ajh.24051] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 05/06/2015] [Accepted: 05/06/2015] [Indexed: 01/31/2023]
Abstract
Red blood cell (RBC) alloimmunization is a significant clinical complication of sickle cell disease (SCD). It can lead to difficulty with cross-matching for future transfusions and may sometimes trigger life-threatening delayed hemolytic transfusion reactions. We conducted a retrospective study to explore the association of clinical complications and age of RBC with alloimmunization in patients with SCD followed at a single institution from 2005 to 2012. One hundred and sixty six patients with a total of 488 RBC transfusions were evaluated. Nineteen patients (11%) developed new alloantibodies following blood transfusions during the period of review. The median age of RBC units was 20 days (interquartile range: 14-27 days). RBC antibody formation was significantly associated with the age of RBC units (P = 0.002), with a hazard ratio of 3.5 (95% CI: 1.71-7.11) for a RBC unit that was 7 days old and 9.8 (95% CI: 2.66-35.97) for a unit that was 35 days old, 28 days after the blood transfusion. No association was observed between RBC alloimmunization and acute vaso-occlusive complications. Although increased echocardiography-derived tricuspid regurgitant jet velocity (TRV) was associated with the presence of RBC alloantibodies (P = 0.02), TRV was not significantly associated with alloimmunization when adjusted for patient age and number of transfused RBC units. Our study suggests that RBC antibody formation is significantly associated with older age of RBCs at the time of transfusion. Prospective studies in patients with SCD are required to confirm this finding.
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Affiliation(s)
- Payal C. Desai
- Division of Hematology; The Ohio State University; Columbus Ohio
| | - Allison M. Deal
- Lineberger Comprehensive Cancer Center Biostatistics Core Facility; University of North Carolina at Chapel Hill
| | - Emily R. Pfaff
- NC TraCS Institute, University of North Carolina at Chapel Hill
| | - Bahjat Qaqish
- Lineberger Comprehensive Cancer Center Biostatistics Core Facility; University of North Carolina at Chapel Hill
| | - Leyna M. Hebden
- Department of Hospital Labs; Transfusion Medicine Services, University of North Carolina Healthcare
| | - Yara A. Park
- Department of Pathology and Laboratory Medicine; University of North Carolina at Chapel Hill
| | - Kenneth I. Ataga
- Division of Hematology/Oncology; University of North Carolina at Chapel Hill
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Smith SA, Ngwenyama TR, O'Brien M, Herring JM, Corsi R, Galligan A, Beloshapka AN, Deng P, Swanson KS, McMichael M. Procoagulant phospholipid concentration in canine erythrocyte concentrates stored with or without prestorage leukoreduction. Am J Vet Res 2015; 76:35-41. [PMID: 25535659 DOI: 10.2460/ajvr.76.1.35] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate canine erythrocyte concentrates (ECs) for the presence of procoagulant phospholipid (PPL), determine whether PPL concentration changes during the course of storage of ECs, and ascertain whether prestorage leukoreduction (removal of leukocytes via gravity filtration) reduces the development of PPL. SAMPLE 10 whole blood units (420 g each) collected from 10 random-source, clinically normal dogs (1 U/dog). PROCEDURES The dogs were randomized to 1 of 2 groups. Of the 10 whole blood units collected, 5 were processed through a standard method, and 5 underwent leukoreduction. Whole blood units were processed to generate ECs, from which aliquots were aseptically collected from each unit weekly for 5 weeks. Supernatants from the concentrates were evaluated for procoagulant activity, which was converted to PPL concentration, by use of an automated assay and by measurement of real-time thrombin generation. RESULTS Supernatants from stored canine ECs contained procoagulant activity as measured by both assays. In general, the PPL concentration gradually increased during the storage period, but leukoreduction reduced the development of increased procoagulant activity over time. CONCLUSIONS AND CLINICAL RELEVANCE The presence of PPL in canine ECs may be associated with procoagulant and proinflammatory effects in vivo, which could have adverse consequences for dogs treated with ECs.
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Affiliation(s)
- Stephanie A Smith
- Department of Biochemistry, School of Molecular and Cellular Biology, University of Illinois, Urbana, IL 61801
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Olumuyiwa-Akeredolu OOO, Pretorius E. Platelet and red blood cell interactions and their role in rheumatoid arthritis. Rheumatol Int 2015; 35:1955-64. [PMID: 26059943 DOI: 10.1007/s00296-015-3300-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 05/26/2015] [Indexed: 12/23/2022]
Abstract
Cytokines, lymphocytes, platelets and several biomolecules have long been implicated in the pathology of rheumatoid arthritis (RA), and the influences of antibody production and tagging, and cytokine, chemokine and enzyme production at specific rheumatoid joints were thought to be exclusive to the advancement of disease parameters. Another role player in RA is red blood cells (RBCs) which, of late, have been found to be involved in RA pathobiology, as there is a positive correlation between RBC counts and joint pathology, as well as with inflammatory biomarkers in the disease. There is also an association between RBC distribution width and the incidence of myocardial infarction amongst RA patients, and there is a change in the lipid distribution within RBC membranes. Of late, certain RBC-associated factors with previously obscure roles and cell-derived particles thought to be inconsequential to the other constituents of plasma were found to be active biomolecular players. Several of these have been discovered to be present in or originating from RBCs. Their influences have been shown to involve in membrane dynamics that cause structural and functional changes in both platelets and RBCs. RBC-derived microparticles are emerging entities found to play direct roles in immunomodulation via interactions with other plasma cells. These correlations highlight the direct influences of RBCs on exacerbating RA pathology. This review will attempt to shed more light on how RBCs, in the true inflammatory milieu of RA, are playing an even greater role than previously assumed.
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Affiliation(s)
- Oore-Ofe O Olumuyiwa-Akeredolu
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Private Bag x323, Arcadia, 0007, South Africa
| | - Etheresia Pretorius
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Private Bag x323, Arcadia, 0007, South Africa.
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Bicalho B, Pereira AS, Acker JP. Buffy coat (top/bottom)- and whole-blood filtration (top/top)-produced red cell concentrates differ in size of extracellular vesicles. Vox Sang 2015; 109:214-20. [PMID: 25900231 DOI: 10.1111/vox.12272] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 02/04/2015] [Accepted: 02/09/2015] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND OBJECTIVES The influence that blood component separation methods have on changes to the red blood cell membrane during storage is not well understood. In Canada, red cell concentrates (RCCs) are produced using the buffy coat (BC, top/bottom) and the whole-blood filtration (WBF, top/top) methods, and this study aimed at comparing their influence on the characteristics of the extracellular vesicles (EV) which accumulated in the respective products during storage. MATERIALS AND METHODS Using flow cytometry, dynamic light scattering and mass spectrometry, we assessed RCC EVs for concentration, size, lipid composition and correlation with supernatant haemoglobin (Hb). RESULTS Accumulation of RBC EVs (CD235a(+) ) with storage time was similar in WBF and BC RCCs. The size of the EVs changed from <100 nm at d5 to near 200 nm by d42, with the EVs from WBF being smaller (P < 0·001) than BC RCCs at all storage times. The amount of EV-bound Hb in the WBF and BC units was similar (about 10% of total supernatant Hb). WBF EVs and BC EVs displayed similar lipid composition. CONCLUSION Haemolysis and EVs increase in BC and WBF RCCs during storage. Differences in the size characteristics of the EVs in WBF and BC RCCs suggest that non-RBC EVs are more prevalent in WBF products. Understanding the impact that manufacturing has on the characteristics of the different populations of EVs in RCCs will aid quality improvement efforts.
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Affiliation(s)
- B Bicalho
- Centre for Innovation, Canadian Blood Services, Edmonton, AB, Canada
| | - A S Pereira
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, Canada
| | - J P Acker
- Centre for Innovation, Canadian Blood Services, Edmonton, AB, Canada.,Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, Canada
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30
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Huang S, Hou HW, Kanias T, Sertorio JT, Chen H, Sinchar D, Gladwin MT, Han J. Towards microfluidic-based depletion of stiff and fragile human red cells that accumulate during blood storage. LAB ON A CHIP 2015; 15:448-58. [PMID: 25406942 PMCID: PMC4268274 DOI: 10.1039/c4lc00768a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
In this study, the effects of prolonged storage on several biophysical properties of red blood cells (RBCs) were investigated. Single cell deformability was used as an important criterion in determining subgroups of RBCs evolved during storage lesion. A deformability-based microfluidic cell sorting technology was applied, which demonstrates the ability to enrich and separate the less deformable subpopulations of stored blood. These less deformable RBC subpopulations were then associated with other important markers such as osmotic fragility indicating cell integrity as well as microparticle content. This work demonstrates a systematic methodology to both monitor and improve banked blood quality, thereby reducing risks related to blood transfusion.
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Affiliation(s)
- Sha Huang
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA.
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31
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Pathogenesis of non-antibody mediated transfusion-related acute lung injury from bench to bedside. Blood Rev 2015; 29:51-61. [DOI: 10.1016/j.blre.2014.09.007] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 09/02/2014] [Indexed: 12/11/2022]
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32
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Obrador R, Musulin S, Hansen B. Red blood cell storage lesion. J Vet Emerg Crit Care (San Antonio) 2014; 25:187-99. [PMID: 25428860 DOI: 10.1111/vec.12252] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Accepted: 10/01/2014] [Indexed: 12/19/2022]
Abstract
OBJECTIVE To summarize current understanding of the mechanisms responsible for changes occurring during red blood cell (RBC) storage, collectively known as the storage lesion, and to review the biological and clinical consequences of increasing storage time of RBCs. DATA SOURCES Human and veterinary clinical studies, experimental animal model studies, and reviews of the RBC storage lesion with no date restrictions. HUMAN DATA SYNTHESIS Experimental studies have characterized the evolution of human RBC and supernatant changes that occur during storage and form the basis for concern about the potential for harm from long-term storage of RBCs. Although 4 randomized controlled trials of varying sizes failed to find an association between RBC storage time and negative clinical outcomes, a recent meta-analysis and numerous observational clinical studies have demonstrated that transfusion of old versus fresh stored RBCs is associated with an increased risk of morbidity and mortality, particularly among trauma victims and cardiac surgery patients. Potential clinical consequences of RBC transfusion following development of the storage lesion include risk of organ dysfunction, organ failure, infections, and death. VETERINARY DATA SYNTHESIS Experimental animal models have contributed to the evidence supporting adverse consequences of the RBC storage lesion. Studies on relevant RBC storage issues such as the effect of different preservative solutions and leukoreduction have been completed. Transfusion with RBCs stored for 42 days increases mortality in dogs with experimental sepsis. CONCLUSION Storage of RBCs induces progressive biochemical, biomechanical, and immunologic changes that affect red cell viability, deformability, oxygen carrying capacity, microcirculatory flow, and recipient response. Most reports in the human and veterinary literature support the concept that there are deleterious effects of the RBC storage lesion, but additional studies with improved experimental design are needed to identify compelling reasons to modify current blood banking and transfusion practices.
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Affiliation(s)
- Rafael Obrador
- From the Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC 27607
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33
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The importance of studying red blood cells microparticles. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2014; 13:172-3. [PMID: 25545879 DOI: 10.2450/2014.0276-14] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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34
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Detection of microparticles from human red blood cells by multiparametric flow cytometry. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2014; 13:274-80. [PMID: 25369588 DOI: 10.2450/2014.0136-14] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 08/26/2014] [Indexed: 12/25/2022]
Abstract
BACKGROUND During storage, red blood cells (RBC) undergo chemical and biochemical changes referred to as "storage lesions". These events determine the loss of RBC integrity, resulting in lysis and release of microparticles. There is growing evidence of the clinical importance of microparticles and their role in blood transfusion-related side effects and pathogen transmission. Flow cytometry is currently one of the most common techniques used to quantify and characterise microparticles. Here we propose multiparametric staining to monitor and quantify the dynamic release of microparticles by stored human RBC. MATERIAL AND METHODS RBC units (n=10) were stored under blood bank conditions for up to 42 days. Samples were tested at different time points to detect microparticles and determine the haemolysis rate (HR%). Microparticles were identified by flow cytometry combining carboxyfluorescein diacetate succinimidyl ester (CFSE) dye, annexin V and anti-glycophorin A antibody. RESULTS We demonstrated that CFSE can be successfully used to label closed vesicles with an intact membrane. The combination of CFSE and glycophorin A antibody was effective for monitoring and quantifying the dynamic release of microparticles from RBC during storage. Double staining with CFSE/glycophorin A was a more precise approach, increasing vesicle detection up to 4.7-fold vs the use of glycophorin A/annexin V alone. Moreover, at all the time points tested, we found a robust correlation (R=0.625; p=0.0001) between HR% and number of microparticles detected. DISCUSSION Multiparametric staining, based on a combination of CFSE, glycophorin A antibody and annexin V, was able to detect, characterise and monitor the release of microparticles from RBC units during storage, providing a sensitive approach to labelling and identifying microparticles for transfusion medicine and, more broadly, for cell-based therapies.
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35
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Alameddine AK, Visintainer P, Alimov VK, Rousou JA. Blood transfusion and the risk of atrial fibrillation after cardiac surgery. J Card Surg 2014; 29:593-9. [PMID: 24965706 DOI: 10.1111/jocs.12383] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND Red blood cell transfusion (Tx) induces a proinflammatory state. Inflammatory mediators are associated with an increased risk of postoperative atrial fibrillation (AF). Therefore, in this study we determined the association between AF and Tx after isolated coronary artery bypass graft surgery (CABG). METHOD Between January 2008 and December 2010, a total of 879 patients underwent CABG. Of these, 815 (92.7%) had complete data extracted from our institution's Society of Thoracic Surgeons (STS) database. Predictors of AF development among four levels of Tx versus nontransfused patients were examined. Multivariable logistic regression and propensity score matching models were used. RESULTS The mean age was 65.8 years (±10.3), 77.4% were male, and 54.4% had an STS predicted risk score (mortality/morbidity) of ≥10%. A total of 564 (69.2%) had at least one unit of Tx. Adjusting for age, sex, time on pump, congestive heart failure, stroke, creatinine level (<1.5 mg per deciliter vs. ≥1.5), STS morbidity/mortality score, perioperative myocardial infarction (MI), cross-clamp time, medications, and hemoglobin level, the odds ratio (OR) of AF increased with increasing Tx (OR, 1.36; 95% confidence interval [CI], 1.11 to 1.68; p = 0.003). The odds of AF increased 61% with each increasing level of Tx (OR, 1.61; 95% CI, 1.15 to 2.26; p = 0.006, by propensity analysis). CONCLUSIONS Perioperative Tx may be associated with excess AF following CABG. This risk increases with increasing number of Tx.
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36
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Bosman GJCGM. Survival of red blood cells after transfusion: processes and consequences. Front Physiol 2013; 4:376. [PMID: 24391593 PMCID: PMC3866658 DOI: 10.3389/fphys.2013.00376] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 12/02/2013] [Indexed: 12/30/2022] Open
Abstract
THE CURRENTLY AVAILABLE DATA SUGGEST THAT EFFORTS TOWARD IMPROVING THE QUALITY OF RED BLOOD CELL (RBC) BLOOD BANK PRODUCTS SHOULD CONCENTRATE ON: (1) preventing the removal of a considerable fraction of the transfused RBCs that takes place within the first hours after transfusion; (2) minimizing the interaction of the transfused RBCs with the patient's immune system. These issues are important in reducing the number and extent of the damaging side effects of transfusions, such as generation of alloantibodies and autoantibodies and iron accumulation, especially in transfusion-dependent patients. Thus, it becomes important for blood bank research not only to assess the classical RBC parameters for quality control during storage, but even more so to identify the parameters that predict RBC survival, function and behavior in the patient after transfusion. These parameters are likely to result from elucidation of the mechanisms that underly physiological RBC aging in vivo, and that lead to the generation of senescent cell antigens and the accumulation of damaged molecules in vesicles. Also, study of RBC pathology-related mechanisms, such as encountered in various hemoglobinopathies and membranopathies, may help to elucidate the mechanisms underlying a storage-associated increase in susceptibility to physiological stress conditions. Recent data indicate that a combination of new approaches in vitro to mimick RBC behavior in vivo, the growing knowledge of the signaling networks that regulate RBC structure and function, and the rapidly expanding set of proteomic and metabolomic data, will be instrumental to identify the storage-associated processes that control RBC survival after transfusion.
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Affiliation(s)
- Giel J C G M Bosman
- Department of Biochemistry, Radboud University Medical Centre Nijmegen, Netherlands
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37
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Dinkla S, Brock R, Joosten I, Bosman GJCGM. Gateway to understanding microparticles: standardized isolation and identification of plasma membrane-derived vesicles. Nanomedicine (Lond) 2013; 8:1657-68. [DOI: 10.2217/nnm.13.149] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Microparticles (MPs) are small plasma membrane-derived vesicles that can expose molecules originating from their parental cells. As vectors of biological information they are likely to play an active role in both homeostasis and pathogenesis, making them promising biomarkers and nanomedicine tools. Therefore, there is an urgent need for standardization of MP isolation and analysis protocols to propel our understanding of MP biology to the next level. Based on current methodology and recent insights, this review proposes an optimized protocol for the isolation and biochemical characterization of MPs.
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Affiliation(s)
- Sip Dinkla
- Department of Biochemistry, Radboud University Medical Centre, Nijmegen Centre for Molecular Life Sciences, Nijmegen, The Netherlands
- Department of Laboratory Medicine – Laboratory of Medical Immunology, Radboud University Medical Centre, Nijmegen Institute for Infection Inflammation and Immunity, Nijmegen, The Netherlands
| | - Roland Brock
- Department of Biochemistry, Radboud University Medical Centre, Nijmegen Centre for Molecular Life Sciences, Nijmegen, The Netherlands
| | - Irma Joosten
- Department of Laboratory Medicine – Laboratory of Medical Immunology, Radboud University Medical Centre, Nijmegen Institute for Infection Inflammation and Immunity, Nijmegen, The Netherlands
| | - Giel JCGM Bosman
- Department of Biochemistry, Radboud University Medical Centre, Nijmegen Centre for Molecular Life Sciences, Nijmegen, The Netherlands
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38
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Cell-derived microparticles in stored blood products: innocent-bystanders or effective mediators of post-transfusion reactions? BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2012; 10 Suppl 2:s25-38. [PMID: 22890265 DOI: 10.2450/2012.006s] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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39
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Red blood cell microparticles and blood group antigens: an analysis by flow cytometry. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2012; 10 Suppl 2:s39-45. [PMID: 22890266 DOI: 10.2450/2012.007s] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND The storage of blood induces the formation of erythrocytes-derived microparticles. Their pathogenic role in blood transfusion is not known so far, especially the risk to trigger alloantibody production in the recipient. This work aims to study the expression of clinically significant blood group antigens on the surface of red blood cells microparticles. MATERIAL AND METHODS Red blood cells contained in erythrocyte concentrates were stained with specific antibodies directed against blood group antigens and routinely used in immunohematology practice. After inducing erythrocytes vesiculation with calcium ionophore, the presence of blood group antigens was analysed by flow cytometry. RESULTS The expression of several blood group antigens from the RH, KEL, JK, FY, MNS, LE and LU systems was detected on erythrocyte microparticles. The presence of M (MNS1), N (MNS2) and s (MNS4) antigens could not be demonstrated by flow cytometry, despite that glycophorin A and B were identified on microparticles using anti-CD235a and anti-MNS3. DISCUSSION We conclude that blood group antigens are localized on erythrocytes-derived microparticles and probably keep their immunogenicity because of their capacity to bind specific antibody. Selective segregation process during vesiculation or their ability to elicit an immune response in vivo has to be tested by further studies.
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40
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Dinkla S, Wessels K, Verdurmen WPR, Tomelleri C, Cluitmans JCA, Fransen J, Fuchs B, Schiller J, Joosten I, Brock R, Bosman GJCGM. Functional consequences of sphingomyelinase-induced changes in erythrocyte membrane structure. Cell Death Dis 2012; 3:e410. [PMID: 23076218 PMCID: PMC3481131 DOI: 10.1038/cddis.2012.143] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Inflammation enhances the secretion of sphingomyelinases (SMases). SMases catalyze the hydrolysis of sphingomyelin into phosphocholine and ceramide. In erythrocytes, ceramide formation leads to exposure of the removal signal phosphatidylserine (PS), creating a potential link between SMase activity and anemia of inflammation. Therefore, we studied the effects of SMase on various pathophysiologically relevant parameters of erythrocyte homeostasis. Time-lapse confocal microscopy revealed a SMase-induced transition from the discoid to a spherical shape, followed by PS exposure, and finally loss of cytoplasmic content. Also, SMase treatment resulted in ceramide-associated alterations in membrane–cytoskeleton interactions and membrane organization, including microdomain formation. Furthermore, we observed increases in membrane fragility, vesiculation and invagination, and large protein clusters. These changes were associated with enhanced erythrocyte retention in a spleen-mimicking model. Erythrocyte storage under blood bank conditions and during physiological aging increased the sensitivity to SMase. A low SMase activity already induced morphological and structural changes, demonstrating the potential of SMase to disturb erythrocyte homeostasis. Our analyses provide a comprehensive picture in which ceramide-induced changes in membrane microdomain organization disrupt the membrane–cytoskeleton interaction and membrane integrity, leading to vesiculation, reduced deformability, and finally loss of erythrocyte content. Understanding these processes is highly relevant for understanding anemia during chronic inflammation, especially in critically ill patients receiving blood transfusions.
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Affiliation(s)
- S Dinkla
- 1] Department of Biochemistry, Radboud University Nijmegen Medical Centre, Nijmegen Centre for Molecular Life Sciences, Nijmegen, The Netherlands
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41
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Kanias T, Gladwin MT. Nitric oxide, hemolysis, and the red blood cell storage lesion: interactions between transfusion, donor, and recipient. Transfusion 2012; 52:1388-92. [PMID: 22780890 DOI: 10.1111/j.1537-2995.2012.03748.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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42
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Lannan KL, Sahler J, Spinelli SL, Phipps RP, Blumberg N. Transfusion immunomodulation--the case for leukoreduced and (perhaps) washed transfusions. Blood Cells Mol Dis 2012; 50:61-8. [PMID: 22981700 DOI: 10.1016/j.bcmd.2012.08.009] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 08/22/2012] [Accepted: 08/23/2012] [Indexed: 11/17/2022]
Abstract
During the last three decades, a growing body of clinical, basic science and animal model data has demonstrated that blood transfusions have important effects on the immune system. These effects include: dysregulation of inflammation and innate immunity leading to susceptibility to microbial infection, down-regulation of cellular (T and NK cell) host defenses against tumors, and enhanced B cell function that leads to alloimmunization to blood group, histocompatibility and other transfused antigens. Furthermore, transfusions alter the balance between hemostasis and thrombosis through inflammation, nitric oxide scavenging, altered rheologic properties of the blood, immune complex formation and, no doubt, several mechanisms not yet elucidated. The net effects are rarely beneficial to patients, unless they are in imminent danger of death due to exsanguination or life threatening anemia. These findings have led to appeals for more conservative transfusion practice, buttressed by randomized trials showing that patients do not benefit from aggressive transfusion practices. At the risk of hyperbole, one might suggest that if the 18th and 19th centuries were characterized by physicians unwittingly harming patients through venesection and bleeding, the 20th century was characterized by physicians unwittingly harming patients through current transfusion practices. In addition to the movement to more parsimonious use of blood transfusions, an effort has been made to reduce the toxic effects of blood transfusions through modifications such as leukoreduction and saline washing. More recently, there is early evidence that reducing the storage period of red cells transfused might be a strategy for minimizing adverse outcomes such as infection, thrombosis, organ failure and mortality in critically ill patients particularly at risk for these hypothesized effects. The present review will focus on two approaches, leukoreduction and saline washing, as means to reduce adverse transfusion outcomes.
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Affiliation(s)
- Katie L Lannan
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
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43
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Novitzky-Basso I, Rot A. Duffy antigen receptor for chemokines and its involvement in patterning and control of inflammatory chemokines. Front Immunol 2012; 3:266. [PMID: 22912641 PMCID: PMC3421148 DOI: 10.3389/fimmu.2012.00266] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Accepted: 08/02/2012] [Indexed: 01/10/2023] Open
Abstract
Leukocyte functions are linked to their migratory responses, which, in turn, are largely determined by the expression profile of classical chemokine receptors. Upon binding their cognate chemokines, these G-protein-coupled receptors (GPCRs) initiate signaling cascades and downstream molecular and cellular responses, including integrin activation and cell locomotion. Chemokines also bind to an alternative subset of chemokine receptors, which have serpentine structure characteristic for GPCRs but lack DRYLAIV consensus motive required for coupling to G-proteins. Duffy antigen receptor for chemokines (DARC) is a member of this atypical receptor subfamily. DARC binds a broad range of inflammatory CXC and CC chemokines and is expressed by erythrocytes, venular endothelial cells, and cerebellar neurons. Erythrocyte DARC serves as blood reservoir of cognate chemokines but also as a chemokine sink, buffering potential surges in plasma chemokine levels. Endothelial cell DARC internalizes chemokines on the basolateral cell surface resulting in subsequent transcytosis of chemokines and their immobilization on the tips of apical microvilli. These DARC-mediated endothelial cell interactions allow chemokines produced in the extravascular tissues to optimally function as arrest chemokines on the luminal endothelial cell surface.
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Affiliation(s)
| | - Antal Rot
- MRC Centre for Immune Regulation, Institute of Biomedical Research, School of Infection and Immunity, University of BirminghamBirmingham, UK
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44
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Dinkla S, Novotný VMJ, Joosten I, Bosman GJCGM. Storage-induced changes in erythrocyte membrane proteins promote recognition by autoantibodies. PLoS One 2012; 7:e42250. [PMID: 22879923 PMCID: PMC3411782 DOI: 10.1371/journal.pone.0042250] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Accepted: 07/05/2012] [Indexed: 12/19/2022] Open
Abstract
Physiological erythrocyte removal is associated with a selective increase in expression of neoantigens on erythrocytes and their vesicles, and subsequent autologous antibody binding and phagocytosis. Chronic erythrocyte transfusion often leads to immunization and the formation of alloantibodies and autoantibodies. We investigated whether erythrocyte storage leads to the increased expression of non-physiological antigens. Immunoprecipitations were performed with erythrocytes and vesicles from blood bank erythrocyte concentrates of increasing storage periods, using patient plasma containing erythrocyte autoantibodies. Immunoprecipitate composition was identified using proteomics. Patient plasma antibody binding increased with erythrocyte storage time, while the opposite was observed for healthy volunteer plasma, showing that pathology-associated antigenicity changes during erythrocyte storage. Several membrane proteins were identified as candidate antigens. The protein complexes that were precipitated by the patient antibodies in erythrocytes were different from the ones in the vesicles formed during erythrocyte storage, indicating that the storage-associated vesicles have a different immunization potential. Soluble immune mediators including complement factors were present in the patient plasma immunoprecipitates, but not in the allogeneic control immunoprecipitates. The results support the theory that disturbed erythrocyte aging during storage of erythrocyte concentrates contributes to transfusion-induced alloantibody and autoantibody formation.
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Affiliation(s)
- Sip Dinkla
- Department of Laboratory Medicine - Laboratory of Medical Immunology, Radboud University Medical Centre, Nijmegen Institute for Infection Inflammation and Immunity, Nijmegen, The Netherlands
| | - Věra M. J. Novotný
- Department of Hematology, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Irma Joosten
- Department of Laboratory Medicine - Laboratory of Medical Immunology, Radboud University Medical Centre, Nijmegen Institute for Infection Inflammation and Immunity, Nijmegen, The Netherlands
| | - Giel J. C. G. M. Bosman
- Department of Biochemistry, Radboud University Medical Centre, Nijmegen Centre for Molecular Life Sciences, Nijmegen, The Netherlands
- * E-mail:
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Abstract
Red blood cell (RBC) transfusion is indicated to improve oxygen delivery to tissue, and for no other purpose. We have come to appreciate that donor RBCs are fundamentally altered during processing and storage in a manner that both impairs oxygen transport efficacy and introduces additional risk by perturbing both immune and coagulation systems. The protean biophysical and physiological changes in RBC function arising from storage are termed the "storage lesion;" many have been understood for some time; for example, we know that the oxygen affinity of stored blood rises during the storage period and that intracellular allosteric regulators, notably 2,3-bisphosphoglyceric acid and ATP, are depleted during storage. Our appreciation of other storage lesion features has emerged with improved understanding of coagulation, immune, and vascular signaling systems. Here, we review key features of the "storage lesion." Additionally, we call particular attention to the newly appreciated role of RBCs in regulating linkage between regional blood flow and regional O(2) consumption by regulating the bioavailability of key vasoactive mediators in plasma, and discuss how processing and storage disturb this key signaling function and impair transfusion efficacy.
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Affiliation(s)
- Allan Doctor
- Division of Pediatric Critical Care Medicine, Washington University School of Medicine, St Louis Children's Hospital, St Louis, MO 63110, USA.
| | - Phil Spinella
- Department of Pediatrics and Biochemistry Washington University in St Louis School of Medicine St Louis, MO
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Persistence of elevated plasma CXCL8 concentrations following red blood cell transfusion in a trauma cohort. Shock 2012; 37:373-7. [PMID: 22293598 DOI: 10.1097/shk.0b013e31824bcb72] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Red blood cell (RBC) transfusion is associated with alterations in systemic concentrations of IL-8/CXCL8 functional homologs in a murine model. Whether RBC transfusion alters systemic neutrophil chemokine concentrations in individuals sustaining traumatic injury is not known. We conducted a retrospective, single-center study of severely injured trauma patients presenting within 12 h of injury with a base deficit greater than 6 and hypotension in the field. Plasma concentrations of 25 chemokines, cytokines, and growth factors were obtained from both transfused (n = 22) and nontransfused (n = 33) groups in the first 48 h following admission. The transfused group (mean RBC units, 2.7 [SD, 1.7]) tended to be older (49.9 [SD, 21.1] vs. 40.4 [SD, 19.9] years, P = 0.10), with a higher percentage of females (40.9% vs. 18.2%, P = 0.06) and a higher Injury Severity Score (27.1 [SD, 12.7] vs. 21.4 [SD, 10.2], P = 0.07). In univariate and multivariate analyses, transfusion was associated with increased hospital and intensive care unit length of stay but not ventilator-free days. Plasma CXCL8 concentrations were higher in the transfused (84 [SD, 88] pg/mL) than the nontransfused group (31 [SD, 21] pg/mL, P = 0.003). Using a linear prediction model to calculate bioanalyte concentrations standardized for age, sex, Injury Severity Score, and admission SBP, we observed that CXCL8 concentrations diverged within 12 h following injury, with the transfused group showing persistently elevated CXCL8 concentrations by contrast to the decay observed in the nontransfused group. Other bioanalytes showed no differences across time. Red blood cell transfusion is associated with persistently elevated neutrophil chemokine CXCL8 concentrations following traumatic injury.
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Strasser EF, Happ S, Weiss DR, Pfeiffer A, Zimmermann R, Eckstein R. Microparticle detection in platelet products by three different methods. Transfusion 2012; 53:156-66. [PMID: 22624624 DOI: 10.1111/j.1537-2995.2012.03720.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND Standardization of platelet-derived microparticle (PMP) enumeration by flow cytometry (FCM) is limited due to its intrinsic characteristics. Because of high clinical relevance of microparticle (MP) detection, standardization of MP assays is required. STUDY DESIGN AND METHODS This prospective paired study analyzed 31 healthy blood donors (18 male, 13 female) and compared pre- and postdonation results of donors with results of plateletpheresis products by three different methods. PMP counts were analyzed by FCM using calibrated beads of defined diameter and annexin V-fluorescein isothiocyanate and CD41-phycoerythrin staining. MP activity was tested by prothrombinase assay (enzyme-linked immunosorbent assay [ELISA]) and a procoagulant phospholipid-dependent clotting time assay (STA-Procoag-PPL, Diagnostica Stago S.A.S.). RESULTS PMP concentration was more than threefold higher in single-platelet units (SPUs) and resulted in higher PMP yields in SPUs compared to double-platelet units (DPUs). The ELISA and the procoagulant clotting assay also revealed a significant higher MP activity in SPUs compared to DPUs. The results of the procoagulation clotting assay correlated inversely with PMP counts obtained by FCM (r = -0.685, p < 0.001) and with the MP activity measured by ELISA (r = -0.641, p < 0.001). CONCLUSION Three different methods for MP detection showed good correlations of results, albeit the basis for MP analysis was different. Even if FCM is considered the "gold standard" of MP detection there are still technical limitations concerning detection of small MP. The procoagulant STA-Procoag-PPL assay and the prothrombinase ELISA assay could be useful additional MP tests. Regarding the interpretation of quantitative results of MPs, preanalytical conditions must be optimized and standardized.
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Affiliation(s)
- Erwin F Strasser
- Department of Transfusion Medicine and Haemostaseology, University Hospital Erlangen, Erlangen, Germany
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Belizaire RM, Prakash PS, Richter JR, Robinson BR, Edwards MJ, Caldwell CC, Lentsch AB, Pritts TA. Microparticles from stored red blood cells activate neutrophils and cause lung injury after hemorrhage and resuscitation. J Am Coll Surg 2012; 214:648-55; discussion 656-7. [PMID: 22342784 DOI: 10.1016/j.jamcollsurg.2011.12.032] [Citation(s) in RCA: 112] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Accepted: 12/20/2011] [Indexed: 01/10/2023]
Abstract
BACKGROUND Transfusion of stored blood is associated with increased complications. Microparticles (MPs) are small vesicles released from RBCs that can induce cellular dysfunction, but the role of RBC-derived MPs in resuscitation from hemorrhagic shock is unknown. In the current study, we examined the effects of RBC-derived MPs on the host response to hemorrhage and resuscitation. STUDY DESIGN MPs were isolated from murine packed RBC units, quantified using flow cytometry, and injected into healthy mice. Separate groups of mice underwent hemorrhage and resuscitation with and without packed RBC-derived MPs. Lungs were harvested for histology and neutrophil accumulation and assessed by myeloperoxidase content. Human neutrophils were treated with human RBC-derived MPs and CD11b expression, superoxide production, and phagocytic activity were determined. RESULTS Stored murine packed RBC units contained increased numbers of RBC-derived MPs compared with fresh units. Hemorrhaged mice resuscitated with MPs demonstrated substantially increased pulmonary neutrophil accumulation and altered lung histology compared with mice resuscitated without MPs. Intravenous injection of MPs into normal mice resulted in neutrophil priming, evidenced by increased neutrophil CD11b expression. Human neutrophils treated with RBC-derived MPs demonstrated increased CD11b expression, increased superoxide production, and enhanced phagocytic ability compared with untreated neutrophils. CONCLUSIONS Stored packed RBC units contain increased numbers of RBC-derived MPs. These MPs appear to contribute to neutrophil priming and activation. The presence of MPs in stored units can be associated with adverse effects, including lung injury, after transfusion.
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Affiliation(s)
- Ritha M Belizaire
- Department of Surgery, University of Cincinnati, Cincinnati, OH 45267-0558, USA
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Hayden SJ, Albert TJ, Watkins TR, Swenson ER. Anemia in critical illness: insights into etiology, consequences, and management. Am J Respir Crit Care Med 2012; 185:1049-57. [PMID: 22281832 DOI: 10.1164/rccm.201110-1915ci] [Citation(s) in RCA: 144] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Anemia is common in the intensive care unit, and may be associated with adverse consequences. However, current options for correcting anemia are not without problems and presently lack convincing efficacy for improving survival in critically ill patients. In this article we review normal red blood cell physiology; etiologies of anemia in the intensive care unit; its association with adverse outcomes; and the risks, benefits, and efficacy of various management strategies, including blood transfusion, erythropoietin, blood substitutes, iron therapy, and minimization of diagnostic phlebotomy.
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Affiliation(s)
- Shailaja J Hayden
- Division of Pulmonary and Critical Care Medicine, University of Washington, Seattle, Washington, USA
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Xiong Z, Oriss TB, Cavaretta JP, Rosengart MR, Lee JS. Red cell microparticle enumeration: validation of a flow cytometric approach. Vox Sang 2012; 103:42-8. [PMID: 22236393 DOI: 10.1111/j.1423-0410.2011.01577.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVES There is growing interest in the clinical application of red blood cell (RBC) microparticle (MP) enumeration as they have been postulated to be effectors of coagulation and inflammation following transfusion and in sickle cell disease. No uniform approach in MP enumeration exists and a key limitation is the lack of an internal validation process. We present and validate a flow cytometric approach where an internal standard is utilized. MATERIALS AND METHODS Glycophorin A(+) Annexin V(+) events were enumerated using MPs isolated from RBC units or plasma samples obtained from volunteers. A mixture of absolute counting (7·6 μm) and calibration beads (0·5, 0·9 and 3 μm) at a fixed ratio was added to each sample. RESULTS RBC MPs were initially selected based upon a fluorescence threshold, and the 0·5- and 0·9-μm beads defined the upper and lower light scatter distribution of MPs. The ratio of 7·6:3-μm bead events was used as an internal standard to validate the precision of MP enumeration across samples (coefficient of variation = 2·5-7·2%) and remained constant in both platelet-rich plasma (PRP) and platelet-free plasma (PFP). RBC MP counts increased in both PRP and PFP obtained from whole blood stimulated with ionophore and increasing calcium concentrations, with PRP showing higher MP counts than PFP at every concentration studied. CONCLUSION This method is a useful strategy to detect RBC MP counts across bio-samples provided that the flow cytometer can reliably discriminate the size of the calibration beads.
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Affiliation(s)
- Z Xiong
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
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