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Klamer G, Sue J, Trickett A, Ko KH, Johnson P, Elwood NJ. A comprehensive human leukocyte antigen analysis of 36 782 cord blood units stored in the Australian Public Cord Blood Banking Network. Cytotherapy 2022; 24:990-998. [PMID: 35871156 DOI: 10.1016/j.jcyt.2022.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 05/30/2022] [Accepted: 06/05/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND AND AIMS The network of public cord blood banks (CBBs) in Australia, known as AusCord, comprises CBBs located in Brisbane, Sydney and Melbourne. A novel comprehensive analysis has been performed to determine whether the cryopreserved, searchable cord blood unit (CBU) inventory of approximately 36 000 units share similar tissue types or haplotypes. METHODS Human leukocyte antigen (HLA) data was analysed using Microsoft Excel following standardisation of typing data. RESULTS The analysis has found that the majority of stored, searched and released CBU exhibit a tissue type that is unique within and between the CBBs. Therefore, each collection performed by the CBBs is likely to comprise a tissue type that is not already stored among the total AusCord inventory. HLA alleles (HLA-A*34, HLA-B*56, HLA-DRB1*08:03), which are uncommon in European populations, were associated with Pacific Islander and/or Indigenous Australian populations and confirmed to be more frequent among donors who, when screened, self-identified as these ethnicities. CONCLUSIONS These data indicate that (i) continued addition of CBU to existing inventories is likely to further increase the HLA diversity and (ii) screening donors for ethnicity or strategically locating collection sites where ethnic minorities reside can successfully result in collection of rare HLA associated with ethnic minority groups for whom finding donors might otherwise be more difficult.
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Affiliation(s)
- Guy Klamer
- Sydney Cord Blood Bank, Sydney Children's Hospital, Randwick, NSW, Australia; School of Women's and Children's Health, Faculty of Medicine, University of New South Wales, Randwick, NSW, Australia.
| | - Jessica Sue
- Sydney Cord Blood Bank, Sydney Children's Hospital, Randwick, NSW, Australia
| | - Annette Trickett
- Bone Marrow Transplant Laboratory, Randwick Hospitals, NSW Health Pathology, Randwick, NSW, Australia
| | - Kap-Hyoun Ko
- Sydney Cord Blood Bank, Sydney Children's Hospital, Randwick, NSW, Australia
| | - Phillip Johnson
- Queensland Cord Blood Bank at the Mater, Mater Hospital, Raymond Terrace, Queensland, Australia
| | - Ngaire J Elwood
- BMDI Cord Blood Bank, Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Victoria, Australia; Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia
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2
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Cliff ERS, Szer J. We must grow the Australian Bone Marrow Donor Registry. Intern Med J 2021; 51:1771-1772. [PMID: 34796626 DOI: 10.1111/imj.15570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/19/2021] [Indexed: 11/30/2022]
Affiliation(s)
| | - Jeff Szer
- Department of Clinical Haematology, Peter MacCallum Cancer Centre and Royal Melbourne Hospital, Melbourne, Victoria, Australia
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3
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Botein EF, Darwish A, El-Tantawy NL, El-Baz R, Eid MI, Shaltot AM. Serological and molecular screening of umbilical cord blood for Toxoplasma gondii infection. Transpl Infect Dis 2019; 21:e13117. [PMID: 31102567 DOI: 10.1111/tid.13117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 04/10/2019] [Accepted: 05/12/2019] [Indexed: 12/27/2022]
Abstract
BACKGROUND Human umbilical cord blood has proven to be a successful alternate source of hematopoietic stem cells for pediatric patients with major hematologic disorders. Toxoplasma gondii is a global opportunistic protozoan which cause fatal complications in immunocompromised individuals. AIM Our goal is to study the prevalence of toxoplasmosis in umbilical cord blood (UCB) and to assess the sensitivity of ELISA and PCR for Toxoplasma infection screening. MATERIAL AND METHODS One hundred cord blood samples were collected immediately after delivery. Anti-Toxoplasma IgG and IgM antibodies were determined using ELISA method; Toxoplasma DNA was detected using nested PCR technique. Total nucleated cells (TNC) and HB were also determined. Demographic data and risk factors data related to the transmission of toxoplasmosis, were collected from mothers. RESULTS Among 100 cord blood samples, 36 (36%) were positive for anti-Toxoplasma IgG antibodies and 6 (6%) were positive for anti-Toxoplasma IgM antibodies. The nested PCR showed 11 (11%) samples containing Toxoplasma DNA from which, 6 (55%) samples were IgM positive. There was no significant association between the risk of Toxoplasma transmission and cord blood positivity for toxoplasmosis. CONCLUSION Owing to the prevalence of toxoplasmosis, its rapid progression and its fatal outcome in immunocompromised patients, cord blood screening for toxoplasmosis with nested PCR should be incorporated into cord blood bank screening protocols.
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Affiliation(s)
- Eman F Botein
- Department of Pediatrics, Faculty of Medicine, Hematology/Oncology Unit, Mansoura University, Mansoura, Egypt
| | - Ahmad Darwish
- Department of Pediatrics, Faculty of Medicine, Hematology/Oncology Unit, Mansoura University, Mansoura, Egypt
| | - Nora L El-Tantawy
- Department of Medical Parasitology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Rizk El-Baz
- Department of Pediatrics, Faculty of Medicine, Genetics Unit, Mansoura University, Mansoura, Egypt
| | - Mohamed I Eid
- Department of Obstetrics and Gynecology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Ali M Shaltot
- Department of Pediatrics, Faculty of Medicine, Genetics Unit, Mansoura University, Mansoura, Egypt
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Santos SVF, Barros SMO, Santos MS, Marti LC, Ribeiro AAF, Kondo AT, Kutner JM. Predictors of high-quality cord blood units. Transfusion 2016; 56:2030-6. [PMID: 27232272 DOI: 10.1111/trf.13653] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 04/04/2016] [Accepted: 04/07/2016] [Indexed: 12/31/2022]
Abstract
BACKGROUND Analysis of umbilical cord blood (UCB) transplants shows a correlation between engraftment and total number of infused cells. Thus, it is worth evaluating what maternal and neonatal characteristics and collection techniques may affect the quality of UCB units. STUDY DESIGN AND METHODS A cross-sectional study was performed with 7897 donors sequentially selected in three health care institutions in Brazil from October 2004 to March 2012, in which both quantitative and qualitative approaches were applied. All donors were considered suitable for cord blood collection. RESULTS The maternal and neonatal characteristics and techniques of collection that influenced the total number of nucleated cells (TNCs; p < 0.001) were type of delivery, newborn weight and sex, and institution of UCB collection. The TNC count was associated with gestational age (p = 0.008), type of delivery (p < 0.001), newborn sex (p < 0.001), newborn weight (p < 0.001), and UCB collection technique (p = 0.003). Center B presented the largest number of nucleated cells in its results (p < 0.001), followed by Center A (p = 0.001). Other characteristics, such as maternal age, were analyzed but were not relevant for the nucleated cell number. CONCLUSION This study provides elements for a model that allows an efficient selection of UCB donors, prioritizing candidates who have a better chance to lead to an optimized use of cord blood cells units.
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Affiliation(s)
- Sandra V F Santos
- Universidade Federal de São Paulo-UNIFESP, Escola Paulista de Enfermagem, São Paulo, Brazil
| | - Sonia M O Barros
- Universidade Federal de São Paulo-UNIFESP, Escola Paulista de Enfermagem, São Paulo, Brazil
| | | | - Luciana C Marti
- Instituto Israelita de Ensino e Pesquisa Albert Einstein, São Paulo, Brazil
| | - Andreza A F Ribeiro
- Departamento de Hemoterapia, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Andrea T Kondo
- Departamento de Hemoterapia, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Jose M Kutner
- Departamento de Hemoterapia, Hospital Israelita Albert Einstein, São Paulo, Brazil
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High quality cord blood banking is feasible with delayed clamping practices. The eight-year experience and current status of the national Swedish Cord Blood Bank. Cell Tissue Bank 2016; 17:439-48. [PMID: 27342904 DOI: 10.1007/s10561-016-9565-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 06/13/2016] [Indexed: 10/21/2022]
Abstract
The National Swedish Cord Blood Bank (NS-CBB) is altruistic and publicly funded. Herein we describe the status of the bank and the impact of delayed versus early clamping on cell number and volume. Cord Blood Units (CBUs) were collected at two University Hospitals in Sweden. Collected volume and nucleated cell content (TNC) were investigated in 146 consecutive Cord Blood (CB) collections sampled during the first quarter of 2012 and in 162 consecutive CB collections done in the first quarter of 2013, before and after clamping practices were changed from immediate to late (60 s) clamping. NS-CBB now holds close to 5000 units whereof 30 % are from non-Caucasian or mixed origins. Delayed clamping had no major effect on collection efficiency. The volume collected was slightly reduced (mean difference, 8.1 ml; 95 % CI, 1.3-15.0 ml; p = 0.02), while cell recovery was not (p = 0.1). The proportion of CBUs that met initial total TNC banking criteria was 60 % using a TNC threshold of 12.5 × 10(8), and 47 % using a threshold of 15 × 10(8) for the early clamping group and 52 and 37 % in the late clamping group. Following implementation of delayed clamping practices at NS-CBB; close to 40 % of the collections in the late clamping group still met the high TNC banking threshold and were eligible for banking, implicating that that cord blood banking is feasible with delayed clamping practices.
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Brown N, Williams R. Cord blood banking - bio-objects on the borderlands between community and immunity. LIFE SCIENCES, SOCIETY AND POLICY 2015; 11:11. [PMID: 26449725 PMCID: PMC4598333 DOI: 10.1186/s40504-015-0029-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 09/30/2015] [Indexed: 06/05/2023]
Abstract
Umbilical cord blood (UCB) has become the focus of intense efforts to collect, screen and bank haematopoietic stem cells (HSCs) in hundreds of repositories around the world. UCB banking has developed through a broad spectrum of overlapping banking practices, sectors and institutional forms. Superficially at least, these sectors have been widely distinguished in bioethical and policy literature between notions of the 'public' and the 'private', the commons and the market respectively. Our purpose in this paper is to reflect more critically on these distinctions and to articulate the complex practical and hybrid nature of cord blood as a 'bio-object' that straddles binary conceptions of the blood economies. The paper draws upon Roberto Esposito's reflections on biopolitics and his attempt to transcend the dualistic polarisations of immunity and community, or the private and the public. We suggest that his thoughts on immunitary hospitality resonate with many of the actual features and realpolitik of a necessarily internationalised and globally distributed UCB 'immunitary regime'.
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Affiliation(s)
- Nik Brown
- Department of Sociology, Science and Technology Studies Unit (SATSU), University of York, York, YO10 5DD, UK.
| | - Rosalind Williams
- Department of Sociology, Science and Technology Studies Unit (SATSU), University of York, York, YO10 5DD, UK
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Jordens CFC, Kerridge IH, Stewart CL, O'Brien TA, Samuel G, Porter M, O'Connor MAC, Nassar N. Knowledge, beliefs, and decisions of pregnant Australian women concerning donation and storage of umbilical cord blood: a population-based survey. Birth 2014; 41:360-6. [PMID: 24988997 DOI: 10.1111/birt.12121] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/09/2014] [Indexed: 12/01/2022]
Abstract
BACKGROUND Many women giving birth in Australian hospitals can choose to donate their child's umbilical cord blood to a public cord blood bank or pay to store it privately. We conducted a survey to determine the proportion and characteristics of pregnant women who are aware of umbilical cord blood (UCB) banking and who have considered and decided about this option. The survey also sought to ascertain information sources, knowledge, and beliefs about UCB banking, and the effect of basic information about UCB on decisions. METHODS Researchers and hospital maternity staff distributed a survey with basic information about UCB banking to 1,873 women of at least 24 weeks' gestation who were attending antenatal classes and hospital clinics in 14 public and private maternity hospitals in New South Wales. RESULTS Most respondents (70.7%) were aware of UCB banking. Their main information sources were leaflets from hospital clinics, print media, antenatal classes, TV, radio, friends, and relatives. Knowledge about UCB banking was patchy, and respondents overestimated the likelihood their child would need or benefit from UCB. Women who were undecided about UCB banking were younger, less educated, or from ethnic or rural backgrounds. After providing basic information about UCB banking, the proportion of respondents who indicated they had decided whether or not to donate or store UCB more than doubled from 30.0 to 67.7 percent. CONCLUSIONS Basic information for parents about UCB banking can affect planned decisions about UCB banking. Information should be accurate and balanced, should counter misconceptions, and should target specific groups.
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Affiliation(s)
- Christopher F C Jordens
- Centre for Values, Ethics and the Law in Medicine, School of Public Health, The University of Sydney, Australia
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Eve DJ, Marty PJ, McDermott RJ, Klasko SK, Sanberg PR. Stem Cell Research and Health Education. AMERICAN JOURNAL OF HEALTH EDUCATION 2013. [DOI: 10.1080/19325037.2008.10599033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- David J. Eve
- a Center of Excellence for Aging and Brain Repair , University of South Florida College of Medicin, Department of Neurosurgery , 12901 Bruce B. Downs Blvd. (MDC 078), Tampa , FL , 33612
| | - Phillip J. Marty
- b Department of Community and Family Health , University of South Florida, College of Public Health
| | - Robert J. McDermott
- b Department of Community and Family Health , University of South Florida, College of Public Health
| | | | - Paul R. Sanberg
- d Center of Excellence for Aging and Brain Repair , University of South Florida
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Samuel GN, Kerridge IH, O'Brien TA. Umbilical cord blood banking: public good or private benefit? Med J Aust 2008; 188:533-5. [PMID: 18459926 DOI: 10.5694/j.1326-5377.2008.tb02198.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2007] [Accepted: 01/11/2008] [Indexed: 11/17/2022]
Abstract
Haematopoietic stem cell transplantation (HSCT) is an accepted curative therapy for many malignant and non-malignant conditions affecting children and adults. Where possible, stem cells for HSCT are provided by human leukocyte antigen (HLA)-matched, related donors. Only 30% of patients have a suitable matched donor; for other patients, donors are sought from bone marrow registries or public umbilical cord blood (UCB) banks. While public UCB banks have been established to support transplant programs in Australia and internationally, parents also have the option of storing their child's UCB in a private commercial UCB bank for personal or family use. In contrast with public UCB banks, there is little social or medical justification for private UCB banking, as it provides no benefit to the community and little benefit to parents (other than reassurance and amelioration of regret), due to the very low likelihood of requiring autologous UCB later in life. Should UCB prove to be beneficial for tissue repair or replacement in the management of degenerative disorders, such as diabetes and Parkinson's disease, then a stronger case may be made in support of commercial banking of UCB for personal use. This may have a major impact on public UCB programs.
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Affiliation(s)
- Gabrielle N Samuel
- Centre for Values, Ethics and the Law in Medicine, University of Sydney, Sydney, NSW.
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Affiliation(s)
- Gabrielle N Samuel
- Centre for Values, Ethics and the Law in Medicine, University of Sydney, Sydney, NSW
| | - Ian H Kerridge
- Centre for Values, Ethics and the Law in Medicine, University of Sydney, Sydney, NSW
- Haematology Department, Westmead Hospital, Sydney, NSW
| | - Tracey A O’Brien
- Centre for Children's Cancer and Blood Disorders, Sydney Children's Hospital, Sydney, NSW
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