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Fernández Souto D, Rosello J, Lazo L, Veloso F, Gamba C, Kuperman S, Roca V. HLA diversity in the Argentinian Umbilical Cord Blood Bank: frequencies according to donor's reported ancestry and geographical distribution. Sci Rep 2021; 11:4140. [PMID: 33602993 PMCID: PMC7892815 DOI: 10.1038/s41598-021-83282-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 02/01/2021] [Indexed: 11/09/2022] Open
Abstract
Umbilical cord blood (UCB) is a suitable source for hematopoietic stem cell transplantation. The study of HLA genes by next generation sequencing is commonly used in transplants. Donor/patient HLA matching is often higher within groups of common ancestry, however "Hispanic" is a broad category that fails to represent Argentina's complex genetic admixture. Our aim is to describe HLA diversity of banked UCB units collected across the country taking into consideration donor's reported ancestral origins as well as geographic distribution. Our results showed an evenly distribution of units mainly for 2 groups: of European and of Native American descent, each associated to a defined geographic location pattern (Central vs. North regions). We observed differences in allele frequency distributions for some alleles previously described in Amerindian populations: for Class I (A*68:17, A*02:11:01G, A*02:22:01G, B*39:05:01, B*35:21, B*40:04, B*15:04:01G, B*35:04:01, B*51:13:01) and Class II (DRB1*04:11:01, DRB1*04:07:01G/03, DRB1*08:02:01, DRB1*08:07, DRB1*09:01:02G, DRB1*14:02:01, DRB1*16:02:01G). Our database expands the current knowledge of HLA diversity in Argentinian population. Although further studies are necessary to fully comprehend HLA heterogeneity, this report should prove useful to increase the possibility of finding compatible donors for successful allogeneic transplant and to improve recruitment strategies for UCB donors across the country.
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Affiliation(s)
- Daniela Fernández Souto
- Cord Blood Bank, Hemotherapy Regional Center, Hospital de Pediatría Dr.Juan P. Garrahan, Combate de los Pozos 1881, (1245), Buenos Aires, Argentina
| | - Julieta Rosello
- Cord Blood Bank, Hemotherapy Regional Center, Hospital de Pediatría Dr.Juan P. Garrahan, Combate de los Pozos 1881, (1245), Buenos Aires, Argentina
| | - Laura Lazo
- Cord Blood Bank, Hemotherapy Regional Center, Hospital de Pediatría Dr.Juan P. Garrahan, Combate de los Pozos 1881, (1245), Buenos Aires, Argentina
| | - Florencia Veloso
- Cord Blood Bank, Hemotherapy Regional Center, Hospital de Pediatría Dr.Juan P. Garrahan, Combate de los Pozos 1881, (1245), Buenos Aires, Argentina
| | - Cecilia Gamba
- Cord Blood Bank, Hemotherapy Regional Center, Hospital de Pediatría Dr.Juan P. Garrahan, Combate de los Pozos 1881, (1245), Buenos Aires, Argentina
| | - Silvina Kuperman
- Cord Blood Bank, Hemotherapy Regional Center, Hospital de Pediatría Dr.Juan P. Garrahan, Combate de los Pozos 1881, (1245), Buenos Aires, Argentina
| | - Valeria Roca
- Cord Blood Bank, Hemotherapy Regional Center, Hospital de Pediatría Dr.Juan P. Garrahan, Combate de los Pozos 1881, (1245), Buenos Aires, Argentina.
- National Research Council, Buenos Aires, Argentina.
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Characteristics of Behcet's Disease in the American Southwest. Semin Arthritis Rheum 2019; 49:296-302. [DOI: 10.1016/j.semarthrit.2019.03.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 02/23/2019] [Accepted: 03/04/2019] [Indexed: 11/23/2022]
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3
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RAET1/ULBP alleles and haplotypes among Kolla South American Indians. Hum Immunol 2013; 74:775-82. [DOI: 10.1016/j.humimm.2013.01.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 01/17/2013] [Accepted: 01/31/2013] [Indexed: 11/20/2022]
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Analysis of 17 STR loci in different provinces of Argentina. Forensic Sci Int Genet 2008; 3:e93-5. [PMID: 19414159 DOI: 10.1016/j.fsigen.2008.08.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2007] [Revised: 07/02/2008] [Accepted: 08/25/2008] [Indexed: 11/21/2022]
Abstract
The allelic distribution of seventeen short tandem repeat (STR) loci, together with some parameters of forensic interest were estimated from a sample set of unrelated healthy individuals from six provinces in Argentina (Buenos Aires, Córdoba, Santa Fe, Salta, Entre Ríos and Chaco). All loci of the sample were in agreement with Hardy-Weinberg equilibrium, after Bonferroni correction. The combined discrimination power for these 17 STRs was 0.999999999999999999997, whereas the combined probability of exclusion was 0.99999993. Furthermore, this population was compared to other previously published samples from Argentina, showing significant values in the population differentiation tests.
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Abstract
A review was made in relation to the molecular variability present in North, Central, and South American Indian populations. It involved results from ancient DNA, mitochondrial DNA in extant populations, HLA and other autosomal markers, X and Y chromosome variation, as well as data from parasitic viruses which could show coevolutionary changes. The questions considered were their origin, ways in which the early colonization of the continent took place, types and levels of the variability which developed, peculiarities of the Amerindian evolutionary processes, and eventual genetic heterogeneity which evolved in different geographical areas. Although much information is already available, it is highly heterogeneous in relation to populations and types of genetic systems investigated. Unfortunately, the present trend of favoring essentially applied research suggest that the situation will not basically improve in the future.
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Affiliation(s)
- Francisco M Salzano
- Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS.
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Little AM, Scott I, Pesoa S, Marsh SG, Argüello R, Cox ST, Ramon D, Vullo C, Madrigal JA. HLA class I diversity in Kolla Amerindians. Hum Immunol 2001; 62:170-9. [PMID: 11182228 DOI: 10.1016/s0198-8859(00)00248-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Human leukocyte antigen (HLA) class I polymorphism was studied within a population of 70 unrelated Kolla Amerindians from the far northwest of Argentina close to the Bolivian border. The results indicate that the HLA-A, -B, and -C alleles typical of other Amerindian populations also predominate in the Kolla. These alleles belong to the following allele groups: HLA-A*02, *68, *31, *24, HLA-B*35, *15, *51, *39, *40, *48, and Cw*01, *03, *04, *07, *08, and *15. For the HLA-A locus, heterogeneity was seen for HLA-A*02 with A*0201, *0211, and *0222; and for A*68 with *68012 and *6817, the latter being a novel allele identified in this population. Analysis of HLA-B identified heterogeneity for all Amerindian allele groups except HLA-B*48, including the identification of the novel B*5113 allele. For HLA-C heterogeneity was identified within the Cw*07, *04, and *08 groups with Cw*0701/06, *0702, *04011, *0404, *0803, and *0809 identified. The most frequent "probable" haplotype found in this population was B*3505-Cw*04011. This study supports previous studies, which demonstrate increased diversity at HLA-B compared with HLA-A and -C. The polymorphism identified within the Kolla HLA-A, -B, and -C alleles supports the hypothesis that HLA evolution is subject to positive selection for diversity within the peptide binding site.
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Affiliation(s)
- A M Little
- Anthony Nolan Research Institute, The Royal Free Hospital, London, United Kingdom
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Romagnoli PA, Nates SV, Pavan JV, Serra HM. Seroprevalence of human herpesvirus 6 in Andino Puneños (Argentina). Trans R Soc Trop Med Hyg 2000; 94:669-72. [PMID: 11198653 DOI: 10.1016/s0035-9203(00)90226-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
We carried out a seroepidemiological survey to define the prevalence of human herpesvirus 6 (HHV6) infection in an aboriginal population (Andino Puneños) from a remote region in north-west Argentina. Antibodies against HHV6 (total IgG and the 4 subclasses of IgG) were studied in 84 serum samples (collected in 1995 and stored at -70 degrees C), using core blood mononuclear cells infected with HHV6 in an immunofluorescence assay. Of the 84 samples, 70 (83%; 95% confidence interval, 75-91%) exhibited IgG antibodies against HHV6. No significant differences in the frequency of humoral immunity were found among the 4 age-groups studied (mean ages 13, 31, 47 and 70 years) namely, 75%, 89.7%, 79.2% and 100%, respectively. HHV6-specific IgG1 was found in all the positive serum samples tested but none of them contained specific IgG2, IgG3 and IgG4. These results confirmed a high rate of infection with HHV6 within this aboriginal group in Argentina and an IgG1 anti-HHV6 activity compatible with a maintenance of immunity.
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Affiliation(s)
- P A Romagnoli
- Immunobiology Department, CEQUIMAP, School of Chemistry, National University of Cordoba, Argentina
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Bodmer JG, Marsh SG, Albert ED, Bodmer WF, Bontrop RE, Dupont B, Erlich HA, Hansen JA, Mach B, Mayr WR, Parham P, Petersdorf EW, Sasazuki T, Schreuder GM, Strominger JL, Svejgaard A, Terasaki PI. Nomenclature for factors of the HLA system, 1998. Vox Sang 1999; 77:164-91. [PMID: 10545854 DOI: 10.1046/j.1423-0410.1999.7730164.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- J G Bodmer
- ICRF Cancer and Immunogenetics Laboratory, Institute of Molecular Medicine, John Radcliffe Hospital, Headington, UK.
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Marsh SG. Nomenclature for factors of the HLA system, update December 1998. EUROPEAN JOURNAL OF IMMUNOGENETICS : OFFICIAL JOURNAL OF THE BRITISH SOCIETY FOR HISTOCOMPATIBILITY AND IMMUNOGENETICS 1999; 26:247. [PMID: 10331165 DOI: 10.1046/j.1365-2370.1999.00159.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- S G Marsh
- Anthony Nolan Research Institute, Royal Free Hospital, London, United Kingdom
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Bodmer JG, Marsh SG, Albert ED, Bodmer WF, Bontrop RE, Dupont B, Erlich HA, Hansen JA, Mach B, Mayr WR, Parham P, Petersdorf EW, Sasazuki T, Schreuder GM, Strominger JL, Svejgaard A, Terasaki PI. Nomenclature for factors of the HLA system, 1998. TISSUE ANTIGENS 1999; 53:407-46. [PMID: 10321590 DOI: 10.1034/j.1399-0039.1999.530421.x] [Citation(s) in RCA: 198] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- J G Bodmer
- ICRF Cancer and Immunogenetics Laboratory, Institute of Molecular Medicine, John Radcliffe Hospital, Headington, Oxford, United Kingdom.
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