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Solloch UV, Giani AS, Pattillo Garnham MI, Sauter J, Bernas SN, Lange V, Barriga F, Fernández-Viña MA, Schmidt AH. HLA allele and haplotype frequencies of registered stem cell donors in Chile. Front Immunol 2023; 14:1175135. [PMID: 37313414 PMCID: PMC10258311 DOI: 10.3389/fimmu.2023.1175135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 05/15/2023] [Indexed: 06/15/2023] Open
Abstract
Patients in need of hematopoietic stem cell transplantation often rely on unrelated stem cell donors matched in certain human leukocyte antigen (HLA) genes. Donor search is complicated by the extensive allelic variability of the HLA system. Therefore, large registries of potential donors are maintained in many countries worldwide. Population-specific HLA characteristics determine the registry benefits for patients and also the need for further regional donor recruitment. In this work, we analyzed HLA allele and haplotype frequencies of donors of DKMS Chile, the first Chilean donor registry, with self-assessed "non-Indigenous" (n=92,788) and "Mapuche" (n=1,993) ancestry. We identified HLA alleles that were distinctly more abundant in the Chilean subpopulations than in worldwide reference populations, four of them particularly characteristic for the Mapuche subpopulation, namely B*39:09g, B*35:09, DRB1*04:07g, and DRB1*16:02g. Both population subsamples carried haplotypes of both Native American and European origin at high frequencies, reflecting Chile's complex history of admixture and immigration. Matching probability analysis revealed limited benefits for Chilean patients (both non-Indigenous and Mapuche) from donor registries of non-Chilean donors, thus indicating a need for ongoing significant donor recruitment efforts in Chile.
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Escobar-Castro K, Hernández-Zaragoza DI, Santizo A, Del Toro-Arreola S, Hernández E, Toledo S M. HLA molecular study of patients in a public kidney transplant program in Guatemala. Hum Immunol 2022; 83:741-748. [PMID: 36028459 DOI: 10.1016/j.humimm.2022.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 07/31/2022] [Accepted: 08/02/2022] [Indexed: 11/28/2022]
Abstract
Guatemala is a country located in Central America, and while it is one of the most populated countries in the region, the genetic diversity of the population has been poorly analyzed. Currently, there are no analyses of the distribution of human leukocyte antigen (HLA) system alleles in mixed ancestry (i.e., ladino) populations in Guatemala. The HLA system exhibits the most extensive polymorphism in the human genome and has been extensively analyzed in a large number of studies related to disease association, transplantation, and population genetics (with particular importance in the understanding of diversity in the human population). Here, we present HLA typing data from 127 samples of unrelated individuals from the kidney transplant program of the San Juan de Dios General Hospital (Guatemala City) using a PCR-SSOP-based (PCR-sequence specific oligonucleotide probes) typing method. We found 16 haplotypes that accounted for 39.76 % of the total haplotype diversity, of which thirteen have been reported previously in Native American populations and three have been reported in European populations. The analyses showed no deviations from Hardy-Weinberg equilibrium, and admixture estimates calculated with k = 3 ancestral components showed that Native American was the most represented component, followed by the European component. The African component was less prominent in the Guatemala mixed ancestry sample in comparison to samples from other countries in Central America. The HLA-based admixture results for Central America showed a continuum in the distribution of Native American, European and African ancestries throughout the region, which is consistent with the complex demographic history of the region.
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Affiliation(s)
- Karla Escobar-Castro
- Escuela de Estudios de Postgrado, Facultad de Ciencias Médicas, Universidad de San Carlos de Guatemala (USAC), Guatemala City, Guatemala; Laboratorio de Histocompatibilidad, Departamento de Nefrología y Trasplante, Hospital General San Juan de Dios, Guatemala City, Guatemala
| | - Diana Iraiz Hernández-Zaragoza
- Laboratorio de Genética Molecular, Escuela Nacional de Antropología e Historia (ENAH), Mexico City, Mexico; Unidad de Inmunogenética, Técnicas Genéticas Aplicadas a la Clínica (TGAC), Mexico City, Mexico.
| | - Adolfo Santizo
- Laboratorio de Histocompatibilidad, Departamento de Nefrología y Trasplante, Hospital General San Juan de Dios, Guatemala City, Guatemala
| | - Susana Del Toro-Arreola
- Instituto de Investigación en Enfermedades Crónico-Degenerativas, Centro Universitario en Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico
| | - Elisa Hernández
- Laboratorio de Histocompatibilidad, Departamento de Nefrología y Trasplante, Hospital General San Juan de Dios, Guatemala City, Guatemala
| | - Manuel Toledo S
- Departamento de Nefrología y Trasplante, Hospital General San Juan de Dios, Guatemala City, Guatemala
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Barquera R, Hernández-Zaragoza DI, Bravo-Acevedo A, Arrieta-Bolaños E, Clayton S, Acuña-Alonzo V, Martínez-Álvarez JC, López-Gil C, Adalid-Sáinz C, Vega-Martínez MDR, Escobedo-Ruíz A, Juárez-Cortés ED, Immel A, Pacheco-Ubaldo H, González-Medina L, Lona-Sánchez A, Lara-Riegos J, Sánchez-Fernández MGDJ, Díaz-López R, Guizar-López GU, Medina-Escobedo CE, Arrazola-García MA, Montiel-Hernández GD, Hernández-Hernández O, Ramos-de la Cruz FDR, Juárez-Nicolás F, Pantoja-Torres JA, Rodríguez-Munguía TJ, Juárez-Barreto V, Delgado-Aguirre H, Escutia-González AB, Goné-Vázquez I, Benítez-Arvizu G, Arellano-Prado FP, García-Arias VE, Rodríguez-López ME, Méndez-Mani P, García-Álvarez R, González-Martínez MDR, Aquino-Rubio G, Escareño-Montiel N, Vázquez-Castillo TV, Uribe-Duarte MG, Ruíz-Corral MDJ, Ortega-Yáñez A, Bernal-Felipe N, Gómez-Navarro B, Arriaga-Perea AJ, Martínez-Bezies V, Macías-Medrano RM, Aguilar-Campos JA, Solís-Martínez R, Serrano-Osuna R, Sandoval-Sandoval MJ, Jaramillo-Rodríguez Y, Salgado-Adame A, Juárez-de la Cruz F, Novelo-Garza B, Pavón-Vargas MDLÁ, Salgado-Galicia N, Bortolini MC, Gallo C, Bedoya G, Rothhammer F, González-José R, Ruiz-Linares A, Canizales-Quinteros S, Romero-Hidalgo S, Krause J, Zúñiga J, Yunis EJ, Bekker-Méndez C, Granados J. The immunogenetic diversity of the HLA system in Mexico correlates with underlying population genetic structure. Hum Immunol 2020; 81:461-474. [PMID: 32651014 DOI: 10.1016/j.humimm.2020.06.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/16/2020] [Accepted: 06/17/2020] [Indexed: 12/15/2022]
Abstract
We studied HLA class I (HLA-A, -B) and class II (HLA-DRB1, -DQB1) allele groups and alleles by PCR-SSP based typing in a total of 15,318 mixed ancestry Mexicans from all the states of the country divided into 78 sample sets, providing information regarding allelic and haplotypic frequencies and their linkage disequilibrium, as well as admixture estimates and genetic substructure. We identified the presence of 4268 unique HLA extended haplotypes across Mexico and find that the ten most frequent (HF > 1%) HLA haplotypes with significant linkage disequilibrium (Δ'≥0.1) in Mexico (accounting for 20% of the haplotypic diversity of the country) are of primarily Native American ancestry (A*02~B*39~DRB1*04~DQB1*03:02, A*02~B*35~DRB1*08~DQB1*04, A*68~B*39~DRB1*04~DQB1*03:02, A*02~B*35~DRB1*04~DQB1*03:02, A*24~B*39~DRB1*14~DQB1*03:01, A*24~B*35~DRB1*04~DQB1*03:02, A*24~B*39~DRB1*04~DQB1*03:02, A*02~B*40:02~DRB1*04~DQB1*03:02, A*68~B*35~DRB1*04~DQB1*03:02, A*02~B*15:01~DRB1*04~DQB1*03:02). Admixture estimates obtained by a maximum likelihood method using HLA-A/-B/-DRB1 as genetic estimators revealed that the main genetic components in Mexico as a whole are Native American (ranging from 37.8% in the northern part of the country to 81.5% in the southeastern region) and European (ranging from 11.5% in the southeast to 62.6% in northern Mexico). African admixture ranged from 0.0 to 12.7% not following any specific pattern. We were able to detect three major immunogenetic clusters correlating with genetic diversity and differential admixture within Mexico: North, Central and Southeast, which is in accordance with previous reports using genome-wide data. Our findings provide insights into the population immunogenetic substructure of the whole country and add to the knowledge of mixed ancestry Latin American population genetics, important for disease association studies, detection of demographic signatures on population variation and improved allocation of public health resources.
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Affiliation(s)
- Rodrigo Barquera
- Department of Archaeogenetics, Max Planck Institute for the Science of Human History (MPI-SHH), Jena, Germany; Molecular Genetics Laboratory, Escuela Nacional de Antropología e Historia (ENAH), Mexico City, Mexico.
| | - Diana Iraíz Hernández-Zaragoza
- Molecular Genetics Laboratory, Escuela Nacional de Antropología e Historia (ENAH), Mexico City, Mexico; Immunogenetics Unit, Técnicas Genéticas Aplicadas a la Clínica (TGAC), Mexico City, Mexico
| | - Alicia Bravo-Acevedo
- Blood Bank, UMAE Hospital de Gineco Obstetricia No. 4 "Luis Castelazo Ayala", Instituto Mexicano del Seguro Social (IMSS), Mexico City, Mexico
| | | | - Stephen Clayton
- Department of Archaeogenetics, Max Planck Institute for the Science of Human History (MPI-SHH), Jena, Germany
| | - Víctor Acuña-Alonzo
- Molecular Genetics Laboratory, Escuela Nacional de Antropología e Historia (ENAH), Mexico City, Mexico
| | - Julio César Martínez-Álvarez
- HLA Laboratory, Central Blood Bank, Hospital de Especialidades, Unidad Médica de Alta Especialidad (UMAE), Centro Médico Nacional "Siglo XXI", Instituto Mexicano del Seguro Social (IMSS), Mexico City, Mexico
| | - Concepción López-Gil
- Histocompatibility Laboratory, Unidad Médica de Alta Especialidad (UMAE) # 6, Instituto Mexicano del Seguro Social (IMSS), Puebla, Puebla, Mexico
| | - Carmen Adalid-Sáinz
- Laboratory of Histocompatibility, Unidad Médica de Alta Especialidad (UMAE) # 71, Instituto Mexicano del Seguro Social (IMSS), Torreón, Coahuila, Mexico
| | - María Del Rosario Vega-Martínez
- Molecular Biology and Histocompatibility Laboratory, Hospital Central Sur de Alta Especialidad, Petróleos Mexicanos (PEMEX), Mexico City, Mexico
| | - Araceli Escobedo-Ruíz
- Histocompatibility Laboratory, Hospital de Especialidades, Centro Médico Nacional de Occidente (CMNO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
| | - Eva Dolores Juárez-Cortés
- Histocompatibility Laboratory, Central Blood Bank, Centro Médico Nacional "La Raza", Instituto Mexicano del Seguro Social (IMSS), Mexico City, Mexico
| | - Alexander Immel
- Department of Archaeogenetics, Max Planck Institute for the Science of Human History (MPI-SHH), Jena, Germany; Institute of Clinical Molecular Biology (IKMB), Kiel University, University Hospital, Schleswig-Holstein, Germany
| | - Hanna Pacheco-Ubaldo
- Molecular Genetics Laboratory, Escuela Nacional de Antropología e Historia (ENAH), Mexico City, Mexico
| | - Liliana González-Medina
- Molecular Genetics Laboratory, Escuela Nacional de Antropología e Historia (ENAH), Mexico City, Mexico
| | - Abraham Lona-Sánchez
- Molecular Genetics Laboratory, Escuela Nacional de Antropología e Historia (ENAH), Mexico City, Mexico
| | - Julio Lara-Riegos
- Chemistry Faculty, Universidad Autónoma de Yucatán (UADY), Mérida, Yucatán, Mexico
| | - María Guadalupe de Jesús Sánchez-Fernández
- Department of Nephrology and Transplantation Unit, Centro Médico Nacional de Occidente (CMNO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
| | - Rosario Díaz-López
- Molecular Biology Laboratory, Hospital Central Militar, Secretaría de la Defensa Nacional (SEDENA), Mexico City, Mexico
| | - Gregorio Ulises Guizar-López
- Molecular Biology Laboratory, Hospital Central Militar, Secretaría de la Defensa Nacional (SEDENA), Mexico City, Mexico
| | - Carolina Elizabeth Medina-Escobedo
- Unit of Research and Education in Health, Unidad Médica de Alta Especialidad (UMAE) # 10, Instituto Mexicano del Seguro Social (IMSS), Mérida, Yucatán, Mexico
| | - María Araceli Arrazola-García
- HLA Laboratory, Central Blood Bank, Hospital de Especialidades, Unidad Médica de Alta Especialidad (UMAE), Centro Médico Nacional "Siglo XXI", Instituto Mexicano del Seguro Social (IMSS), Mexico City, Mexico
| | | | | | - Flor Del Rocío Ramos-de la Cruz
- Histocompatibility Laboratory, Unidad Médica de Alta Especialidad (UMAE) # 6, Instituto Mexicano del Seguro Social (IMSS), Puebla, Puebla, Mexico
| | | | - Jorge Arturo Pantoja-Torres
- Immunology Division, Unidad Médica de Alta Especialidad (UMAE) # 1, Instituto Mexicano del Seguro Social (IMSS), León, Guanajuato, Mexico
| | - Tirzo Jesús Rodríguez-Munguía
- Molecular Biology Laboratory, Hospital General "Norberto Treviño Zapata", Dirección de Servicios de Salud de Tamaulipas, Ciudad Victoria, Tamaulipas, Mexico
| | | | - Héctor Delgado-Aguirre
- Laboratory of Histocompatibility, Unidad Médica de Alta Especialidad (UMAE) # 71, Instituto Mexicano del Seguro Social (IMSS), Torreón, Coahuila, Mexico
| | | | - Isis Goné-Vázquez
- Histocompatibility Laboratory, Hospital de Especialidades, Centro Médico Nacional de Occidente (CMNO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
| | - Gamaliel Benítez-Arvizu
- HLA Laboratory, Central Blood Bank, Hospital de Especialidades, Unidad Médica de Alta Especialidad (UMAE), Centro Médico Nacional "Siglo XXI", Instituto Mexicano del Seguro Social (IMSS), Mexico City, Mexico
| | - Francia Paulina Arellano-Prado
- Pediatrics Hospital, Centro Médico Nacional de Occidente (CMNO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
| | - Víctor Eduardo García-Arias
- Pediatrics Hospital, Centro Médico Nacional de Occidente (CMNO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
| | - Marla Estefanía Rodríguez-López
- Pediatrics Hospital, Centro Médico Nacional de Occidente (CMNO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
| | - Patricia Méndez-Mani
- Histocompatibility Laboratory, Unidad Médica de Alta Especialidad (UMAE) # 6, Instituto Mexicano del Seguro Social (IMSS), Puebla, Puebla, Mexico
| | - Raquel García-Álvarez
- Pharmacology Laboratory, Research Unit, Instituto Nacional de Pediatría (INP), Mexico City, Mexico
| | | | - Guadalupe Aquino-Rubio
- Molecular Biology Laboratory, Hospital General "Norberto Treviño Zapata", Dirección de Servicios de Salud de Tamaulipas, Ciudad Victoria, Tamaulipas, Mexico
| | - Néstor Escareño-Montiel
- Department of Transplantation, Unidad Médica de Alta Especialidad (UMAE) # 71, Instituto Mexicano del Seguro Social (IMSS), Torreón, Coahuila, Mexico
| | | | - María Guadalupe Uribe-Duarte
- Clinical Laboratory, Unidad Médica de Alta Especialidad (UMAE) # 2, Instituto Mexicano del Seguro Social (IMSS), Ciudad Obregón, Sonora, Mexico
| | - María de Jesús Ruíz-Corral
- Clinical Laboratory, Unidad Médica de Alta Especialidad (UMAE) # 2, Instituto Mexicano del Seguro Social (IMSS), Ciudad Obregón, Sonora, Mexico
| | - Andrea Ortega-Yáñez
- Department of Development Genetics and Molecular Physiology, Instituto de Biotecnología (IBT), Universidad Nacional Autónoma de México (UNAM), Cuernavaca, Morelos, Mexico
| | | | - Benjamín Gómez-Navarro
- Central Office of Nephrology, Centro Médico Nacional de Occidente (CMNO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico
| | - Agustín Jericó Arriaga-Perea
- Histocompatibility Laboratory, Central Blood Bank, Centro Médico Nacional "La Raza", Instituto Mexicano del Seguro Social (IMSS), Mexico City, Mexico
| | | | - Rosa María Macías-Medrano
- Histocompatibility Laboratory, Central Blood Bank, Centro Médico Nacional "La Raza", Instituto Mexicano del Seguro Social (IMSS), Mexico City, Mexico
| | - Jesús Abraham Aguilar-Campos
- Clinical Laboratory, Unidad Médica de Alta Especialidad (UMAE) # 2, Instituto Mexicano del Seguro Social (IMSS), Ciudad Obregón, Sonora, Mexico
| | - Raúl Solís-Martínez
- Department of Molecular Biology, Laboratorios Diagnóstica, Villahermosa, Tabasco, Mexico
| | - Ricardo Serrano-Osuna
- Clinical Laboratory, Unidad Médica de Alta Especialidad (UMAE) # 2, Instituto Mexicano del Seguro Social (IMSS), Ciudad Obregón, Sonora, Mexico
| | - Mario J Sandoval-Sandoval
- Central Office of Transplantation, Centro Médico Nacional de Occidente (CMNO), Instituto Mexicano del Seguro Social (IMSS), Guadalajara, Jalisco, Mexico; Health Research Division, Unidad Médica de Alta Especialidad (UMAE) # 71, Instituto Mexicano del Seguro Social (IMSS), Torreón, Coahuila, Mexico
| | - Yolanda Jaramillo-Rodríguez
- Direction of Health Education and Research, Unidad Médica de Alta Especialidad (UMAE) # 71, Instituto Mexicano del Seguro Social (IMSS), Torreón, Coahuila, Mexico
| | - Antonio Salgado-Adame
- Direction of Health Education and Research, Unidad Médica de Alta Especialidad (UMAE) # 71, Instituto Mexicano del Seguro Social (IMSS), Torreón, Coahuila, Mexico
| | - Federico Juárez-de la Cruz
- Department of Transplantation, Unidad Médica de Alta Especialidad (UMAE) # 71, Instituto Mexicano del Seguro Social (IMSS), Torreón, Coahuila, Mexico
| | - Bárbara Novelo-Garza
- Medical Infrastructure Planning Committee, Instituto Mexicano del Seguro Social (IMSS), Mexico City, Mexico
| | - María de Los Ángeles Pavón-Vargas
- Histocompatibility Laboratory, Unidad Médica de Alta Especialidad (UMAE) # 6, Instituto Mexicano del Seguro Social (IMSS), Puebla, Puebla, Mexico
| | - Norma Salgado-Galicia
- Molecular Biology and Histocompatibility Laboratory, Hospital Central Sur de Alta Especialidad, Petróleos Mexicanos (PEMEX), Mexico City, Mexico
| | - Maria Cátira Bortolini
- Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Carla Gallo
- Laboratorios de Investigación y Desarrollo, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Gabriel Bedoya
- Genética Molecular (GENMOL, Universidad de Antioquia, Medellín, Colombia
| | - Francisco Rothhammer
- Programa de Genética Humana, ICBM, Facultad de Medicina, Universidad de Chile, Santiago, Chile; Instituto de Alta Investigación, Universidad de Tarapacá, Arica, Chile
| | - Rolando González-José
- Instituto Patagónico de Ciencias Sociales y Humanas-Centro Nacional Patagónico, CONICET, Puerto Madryn, Argentina
| | - Andrés Ruiz-Linares
- Ministry of Education Key Laboratory of Contemporary Anthropology and Collaborative Innovation Center of Genetics and Development, Fudan University, Shanghai, China; Aix-Marseille Univ, CNRS, EFS, ADES, Marseille, France
| | - Samuel Canizales-Quinteros
- Unidad de Genómica de Poblaciones Aplicada a la Salud, Facultad de Química, Universidad Nacional Autónoma de México e Instituto Nacional de Medicina Genómica, Mexico City, Mexico
| | - Sandra Romero-Hidalgo
- Department of Computational Genomics, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, Mexico
| | - Johannes Krause
- Department of Archaeogenetics, Max Planck Institute for the Science of Human History (MPI-SHH), Jena, Germany
| | - Joaquín Zúñiga
- Laboratory of Immunobiology and Genetics, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico; Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Mexico City, Mexico
| | - Edmond J Yunis
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Carolina Bekker-Méndez
- Immunology and Infectology Research Unit, Infectology Hospital, Centro Médico Nacional "La Raza", Instituto Mexicano del Seguro Social (IMSS), Mexico City, Mexico
| | - Julio Granados
- Department of Transplantation, Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán" (INCMNSZ), Mexico City, Mexico.
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Williams RC, Knowler WC, Shuldiner AR, Gosalia N, Van Hout C, Hanson RL, Bogardus C, Baier LJ. Next generation sequencing and the classical HLA loci in full heritage Pima Indians of Arizona: Defining the core HLA variation for North American Paleo-Indians. Hum Immunol 2019; 80:955-965. [PMID: 31706744 DOI: 10.1016/j.humimm.2019.10.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 10/10/2019] [Accepted: 10/11/2019] [Indexed: 11/19/2022]
Abstract
The Pima Indians of the Gila River Indian Community in Arizona have participated in a long-range study of type 2 diabetes mellitus since 1965 and have been the subject of HLA typing and population studies since the early days of serological assays. These data have been in numerous HLA workshops and conferences and have been the source of at least five novel alleles at the classical HLA loci. In recent time nearly the entire study group was subject to next generation sequencing by whole genome or exome technologies, which has allowed us to HLA type over 3000 full heritage persons with recently developed computer algorithms. We present here the results for the classical HLA Loci: HLA-A, B, C, DRA, DRB1, DRB3, DRB4, DRB5, DPA1, DPB1, DQA1, and DQB1 to the third field of resolution for synonymous alleles and type the likely four field resolution alleles from the subset of whole genome sequences. Allele frequencies, and haplotype frequencies at up to five loci, are presented as well as measures of population structure and heterozygosity. We define a core set of HLA variation that approximates the distribution for the Paleo-Indians and impute nine-locus, 4-field haplotypes that are expected to be common in full heritage peoples.
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Affiliation(s)
- Robert C Williams
- Phoenix Epidemiology and Clinical Research Branch, NIH, NIDDK, Phoenix, AZ 85014, United States.
| | - William C Knowler
- Phoenix Epidemiology and Clinical Research Branch, NIH, NIDDK, Phoenix, AZ 85014, United States
| | | | - Nehal Gosalia
- Regeneron Genetics Center, Tarrytown, NY 10591, United States
| | | | - Robert L Hanson
- Phoenix Epidemiology and Clinical Research Branch, NIH, NIDDK, Phoenix, AZ 85014, United States
| | - Clifton Bogardus
- Phoenix Epidemiology and Clinical Research Branch, NIH, NIDDK, Phoenix, AZ 85014, United States
| | - Leslie J Baier
- Phoenix Epidemiology and Clinical Research Branch, NIH, NIDDK, Phoenix, AZ 85014, United States
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Galarza JM, Barquera R, Álvarez AMT, Hernández Zaragoza DI, Sevilla GP, Tamayo A, Pérez M, Dávila D, Birnberg L, Alonzo VA, Krause J, Grijalva M. Genetic diversity of the HLA system in human populations from the Sierra (Andean), Oriente (Amazonian) and Costa (Coastal) regions of Ecuador. Hum Immunol 2018; 79:639-650. [DOI: 10.1016/j.humimm.2018.06.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 05/23/2018] [Accepted: 06/07/2018] [Indexed: 12/13/2022]
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HLA-A, B, DRB1, DQA1, DQB1 alleles and haplotype frequencies in Dene and Cree cohorts in Manitoba, Canada. Hum Immunol 2017; 78:401-411. [PMID: 28359736 DOI: 10.1016/j.humimm.2017.03.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 02/01/2017] [Accepted: 03/18/2017] [Indexed: 01/22/2023]
Abstract
BACKGROUND First Nations in the Canadian province of Manitoba have disproportionately high rates of epidemic and endemic TB. Gene polymorphisms that modulate HLA Class I and II antigens are among the risk markers for TB, along with other biologic, and social determinants of health. HLA-A, B, DRB1, DQA1, DQB1 were typed in two Manitoba First Nation indigenous groups to identify and compare the frequency of gene polymorphisms that may influence susceptibility or resistance to TB. METHODS Participants who self-identified as either Dene or Cree enrolled into the study from two First Nation communities in Manitoba, Canada. Genomic DNA was extracted from blood samples collected with informed consent from Dene (N=63) and Cree (N=42) First Nation study participants. Participants self-reported having treated active TB, treated latent TB or no TB. HLA Class I and II molecules were typed using sequence-specific oligonucleotide (SSO) probes from commercially available kits. RESULTS The rates of treated active and latent TB were marginally higher among the Dene than the Cree participants (p=0.112). Class I and II HLA loci were in Hardy-Weinberg equilibrium in both the Dene and Cree groups. In this exploratory analysis of TB and HLA allele frequencies in Dene and Cree cohorts HLA-A*03 and HLA-DQB1*05:03 were significantly associated with TB. CONCLUSIONS The high incidence of TB in both Dene and Cree populations in Canada requires both biomedical and socioeconomic prevention and control measures. Among the former, an understanding of HLA diversity among First Nations groups may aid the development of new effective vaccine and therapeutic modalities that depend on the interaction between small molecules and specific HLA epitopes.
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Arnaiz-Villena A, Muñiz E, del Palacio-Gruber J, Campos C, Alonso-Rubio J, Gomez-Casado E, Lopez-Pacheco F, Martin-Villa M, Silvera C. Ancestry of Amerindians and its Impact in Anthropology, Transplantation, HLA Pharmacogenomics and Epidemiology by HLA Study in Wiwa Colombian Population. ACTA ACUST UNITED AC 2016. [DOI: 10.2174/1874220301603010269] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:HLA autosomic genes are unique because they conform the most polymorphic human system. Importance of this system is recognized in Medicine for Transplantation, Epidemiology (HLA and disease linkage), Pharmacogenomics (HLA linked to drug side effects) and for defining the origin of populations in both male and female lineages.Objectives:Studying HLA profile of a isolated Amerindian group from North Colombia (Wiwa) in order to draw conclusions about its Preventive Medicine, the genetic relationship with Worldwide populations and America peopling, since this last issue is hotly debated.Methodology:A total of 14,660 HLA chromosomes were included. Peripheral blood was obtained from volunteer blood donors belonging to Wiwa (also named Arsario) ethnic group. HLA-A, -B, -C, -DRB1 and -DQB1 genes were analyzed by standard methods. Wiwa Amerindians relationships with others were calculated by using Arlequin, Dispan and Vista software computer packages.Results:Extended HLA, -A, -B, -C, -DRB1 and -DQB1 haplotypes have been studied for the first time in this population. Classical Amerindian haplotypes have been found and also new Wiwa (Arsario) Amerindian haplotypes. New haplotypes are A*68:01 - B*15:01 - C*03:03 - DRB1*14:02 - DQB1*03:02, A*11:01 - B*07:02 - C*07:02 - DRB1*15:03 - DQB1*06:02 and A*68:01 - B*15:01 - C*03:04 - DRB1*14:02 - DQB1*03:01.Conclusion:They have been reached after exhaustive comparisons of Wiwa with other Amerindians and Worldwide populations by using genetic distances, Neighbor Joining trees, correspondence analysis and specific group of alleles which are common and frequent in both Amerindians and Pacific Islanders. They are: 1) The Americas First Inhabitants have been probably come through Bering Strait and also through Pacific (from Austronesia and Asia) and Atlantic (from Europe) routes. A bidirectional gene flow is not discarded. 2) Genetic HLA Amerindian profile is separated from that of other Worldwide populations. 3) Amerindians geographical proximity groups’ relatedness is not concordant with HLA genetic relatedness, neither with language. This may be explained by a substantial population decrease that occurred after Europeans invaded America in 1492 and carried new pathogens and epidemics. 4) Our results are also useful for Wiwa and other Amerindians future preventive medicine (HLA linked diseases), HLA pharmacogenomics and transplantation regional programs.
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8
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Fontecchio G, Fioroni MA, Azzarone R, Battistoni C, Cervelli C, Ventura L, Mercurio C, Fornaciari G, Papola F. Genetic Predisposition to Rheumatoid Arthritis in a Tuscan (Italy) Ancient Human Remain. Int J Immunopathol Pharmacol 2016; 20:103-9. [PMID: 17346433 DOI: 10.1177/039463200702000112] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Rheumatoid arthritis (RA) is currently believed to have originated in America, and after the discovery of this continent in 1492, to have been exported to the Old World. We evaluated the genetic predisposition to RA in the “Braids Lady” from Arezzo (Italy), a partially mummified woman's body dating back to the end of 1500 AD which presents the anatomical and pathological features of this disease. The study of the polymorphic HLA-DRB1 locus, which includes alleles strongly associated with RA onset, has received much attention over recent years, especially the loci codifying for the DR1 and DR4 antigens, widely represented in the Mediterranean population, and for DR14, widespread among Native Americans. Molecular analysis was performed on extracts of DNA from the mummy, firstly from histological bone sections and then from the whole bone. Two different HLA typing techniques, PCR-sequence-specific oligonucleotides (PCR-SSO) and PCR-sequence-specific primers (PCR-SSP), were employed to identify HLA-DRB alleles. Both genotyping methods showed that the “Braids Lady” carried the DRB1*0101 allele, the serological equivalent of the DR1 antigen. Although the possession of RA risk factor genes cannot be considered a diagnostic marker, the positive result of the Italian mummy for DRB1*0101 and the RA features present, support the idea that this pathology was present in the Old World from at least the mid-16th century. A pathogenetic hypothesis of RA which might well explain its worldwide diffusion is the “molecular mimicry”, resulting from a cross-reactive antibody response between certain microbial antigens and shared epitopes of specific HLA-DR1, DR4 and DR14 susceptibility alleles, the frequency of which varies among different ethnic groups.
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Affiliation(s)
- G Fontecchio
- Centro Regionale di Immunoematologia e Tipizzazione Tissutale, Azienda ASL n.4, L'Aquila, Italy
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9
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Fahrenwald NL, Belitz C, Keckler A, Sharma M. Sharing the Gift of Life: An Intervention to Increase Organ and Tissue Donation for American Indians. Prog Transplant 2016; 17:281-7. [DOI: 10.1177/152692480701700405] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Context Growing waiting lists for organ transplantation require attention to populations with a high demand for organs but a low donation rate. American Indians experience a high demand for kidney transplantation because of an epidemic of type 2 diabetes, yet donation consent rates are low in this group. Objective To design and evaluate an educational intervention to increase the intention to serve as an organ or tissue donor among American Indians. Intervention Sharing the Gift of Life was designed for reservation-dwelling American Indians living in the Northern Plains area of the United States. The intervention addressed important cultural traditions and was derived from the Transtheoretical Model of behavior change. Design A 2-stage descriptive evaluation design was used. Setting and Participants Two evaluation groups were included. American Indian members of a project advisory council served as cultural expert evaluators (stage 1). Northern Plains reservation–dwelling American Indian adults were community member evaluators (stage 2). Measures Stage 1 used an Educational Materials Review Form. Stage 2 used an adapted community member evaluation tool. Results The cultural expert evaluation was strong. All items met the <3.0 mean acceptability criterion (range 1.93–2.89). Content validity indices met criterion of 0.80 for the overall evaluation and for all items. Cultural specific changes to the materials were suggested. After revision, community member evaluation was favorable. Mean evaluation scores met criterion and content validity indices were acceptable. Pronunciation of traditional language was corrected in the video. Sharing the Gift of Life is a promising intervention that should undergo efficacy testing.
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Affiliation(s)
- Nancy L. Fahrenwald
- South Dakota State University, College of Nursing, Brookings, SD (NLF), South Dakota Lion's Eye Bank and Spirit of the North Tissue Services, Sioux Falls, SD (CB, AK), University of Cincinnati, Cincinnati, OH (MS)
| | - Christine Belitz
- South Dakota State University, College of Nursing, Brookings, SD (NLF), South Dakota Lion's Eye Bank and Spirit of the North Tissue Services, Sioux Falls, SD (CB, AK), University of Cincinnati, Cincinnati, OH (MS)
| | - Arliss Keckler
- South Dakota State University, College of Nursing, Brookings, SD (NLF), South Dakota Lion's Eye Bank and Spirit of the North Tissue Services, Sioux Falls, SD (CB, AK), University of Cincinnati, Cincinnati, OH (MS)
| | - Manoj Sharma
- South Dakota State University, College of Nursing, Brookings, SD (NLF), South Dakota Lion's Eye Bank and Spirit of the North Tissue Services, Sioux Falls, SD (CB, AK), University of Cincinnati, Cincinnati, OH (MS)
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Kryatova MS, Okoye GA. Dermatology in the North American Indian/Alaska Native population. Int J Dermatol 2015; 55:125-34. [PMID: 26474729 DOI: 10.1111/ijd.12977] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 01/14/2015] [Indexed: 11/30/2022]
Abstract
Dermatology is greatly understudied in the American Indian/Alaska Native (AIAN) population. This topic deserves attention in light of the changing demographics of the United States and the healthcare disparities faced by AIAN, including access to dermatologic care. In this review, we discuss disorders that are more prevalent or otherwise important in the AIAN population, such as cutaneous malignancies, photodermatoses, acanthosis nigricans, connective tissue disorders, cutaneous infections, hypertrophic scar formation, and Heck's disease. We aim to provide an updated review and increase awareness of the dermatologic needs of the AIAN population.
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Affiliation(s)
| | - Ginette A Okoye
- Johns Hopkins University School of Medicine, Baltimore, MD, USA
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11
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Arnaiz-Villena A, Vargas-Alarcón G, Areces C, Enríquez-de-Salamanca M, Abd-El-Fatah-Khalil S, Fernández-Honrado M, Marco J, Martín-Villa JM, Rey D. Mixtec Mexican Amerindians: an HLA Alleles Study for America Peopling, Pharmacogenomics and Transplantation. Immunol Invest 2014; 43:738-55. [PMID: 25254939 DOI: 10.3109/08820139.2014.926369] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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12
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Mercury, autoimmunity, and environmental factors on cheyenne river sioux tribal lands. Autoimmune Dis 2014; 2014:325461. [PMID: 24864198 PMCID: PMC4017878 DOI: 10.1155/2014/325461] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 02/17/2014] [Indexed: 01/25/2023] Open
Abstract
Mercury (Hg), shown to induce autoimmune disease in rodents, is a ubiquitous toxicant throughout Cheyenne River Sioux Tribe (CRST) lands. CRST members may be exposed to Hg through fish consumption (FC), an important component of native culture that may supplement household subsistence. Our goals were to ascertain whether total blood Hg levels (THg) reflect Hg exposure through FC and smoking, and determine whether THg is associated with the presence of anti-nuclear antibody (ANA) and specific autoantibodies (sAuAb). We recruited 75 participants who regularly consume fish from CRST waters. Hg exposure through FC and smoking were assessed via questionnaires. Whole blood samples were collected from participants, and THg was measured using ICP-MS. ANA and sAuAb in serum were modeled using demographic and exposure information as predictors. Female gender, age, and FC were significant predictors of THg and sAuAb; self-reported smoking was not. 31% of participants tested positive for ANA ≥ 2+. Although ANA was not significantly associated with Hg, the interactions of gender with Hg and proximity to arsenic deposits were statistically significant (P < 0.05). FC resulted in a detectable body burden of Hg, but THg alone did not correlate with the presence of ANA or sAuAb in this population.
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Mack SJ, Cano P, Hollenbach JA, He J, Hurley CK, Middleton D, Moraes ME, Pereira SE, Kempenich JH, Reed EF, Setterholm M, Smith AG, Tilanus MG, Torres M, Varney MD, Voorter CEM, Fischer GF, Fleischhauer K, Goodridge D, Klitz W, Little AM, Maiers M, Marsh SGE, Müller CR, Noreen H, Rozemuller EH, Sanchez-Mazas A, Senitzer D, Trachtenberg E, Fernandez-Vina M. Common and well-documented HLA alleles: 2012 update to the CWD catalogue. ACTA ACUST UNITED AC 2013; 81:194-203. [PMID: 23510415 DOI: 10.1111/tan.12093] [Citation(s) in RCA: 173] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 02/14/2013] [Accepted: 02/15/2013] [Indexed: 11/26/2022]
Abstract
We have updated the catalogue of common and well-documented (CWD) human leukocyte antigen (HLA) alleles to reflect current understanding of the prevalence of specific allele sequences. The original CWD catalogue designated 721 alleles at the HLA-A, -B, -C, -DRB1, -DRB3/4/5, -DQA1, -DQB1, and -DPB1 loci in IMGT (IMmunoGeneTics)/HLA Database release 2.15.0 as being CWD. The updated CWD catalogue designates 1122 alleles at the HLA-A, -B, -C, -DRB1, -DRB3/4/5, -DQA1, -DQB1, -DPA1 and -DPB1 loci as being CWD, and represents 14.3% of the HLA alleles in IMGT/HLA Database release 3.9.0. In particular, we identified 415 of these alleles as being 'common' (having known frequencies) and 707 as being 'well-documented' on the basis of ~140,000 sequence-based typing observations and available HLA haplotype data. Using these allele prevalence data, we have also assigned CWD status to specific G and P designations. We identified 147/151 G groups and 290/415 P groups as being CWD. The CWD catalogue will be updated on a regular basis moving forward, and will incorporate changes to the IMGT/HLA Database as well as empirical data from the histocompatibility and immunogenetics community. This version 2.0.0 of the CWD catalogue is available online at cwd.immunogenomics.org, and will be integrated into the Allele Frequencies Net Database, the IMGT/HLA Database and National Marrow Donor Program's bioinformatics web pages.
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Affiliation(s)
- S J Mack
- Center for Genetics, Children's Hospital Oakland Research Institute, Oakland, CA, USA.
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14
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HLA genetic profile of Mapuche (Araucanian) Amerindians from Chile. Mol Biol Rep 2013; 40:4257-67. [PMID: 23666052 DOI: 10.1007/s11033-013-2509-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 04/27/2013] [Indexed: 10/26/2022]
Abstract
Amerindian Mapuche (Araucanians) are now living in Chile and Argentina at both sides of Andean Mountains. They are anthropologically and genetically different from southernmost South America Patagonian Amerindians. Most of the HLA alleles found in our Mapuche sample are frequent or very frequent in North and South America Amerindians: (1) Class I: A*02:01, A*03:01, A*68:01, B*39:09, B*51:01, (2) Class II: DRB1*03:01, DRB1*04:03, DRB1*07:01, DRB1*08:02, DRB1*14:02, DRB1*16:02. One of the nine most frequent extended haplotypes seems to be from European origin, suggesting the existence of a degree of admixture with Europeans in our Mapuche sample. It has been calculated of about 11 % admixture. Three of the extended haplotypes are also found in other Amerindians and five of them are newly found in Mapuche Amerindians: A*68:01-B*39:09-DRB1*08:02-DQB1*04:02; A*68:01-B*51:01-DRB1*04:03-DQB1*03:02; A*29:01-B*08:01-DRB1*03:01-DQB1*02:01; A*02:01-B*15:01-DRB1*04:03-DQB1*03:02; A*33:01-B*14:02-DRB1*07:01-DQB1*03:03. The medical importance of calculating HLA profile is discussed on the diagnostic (HLA and disease) and therapeutical bases of HLA pharmacogenomics and on the construction of a virtual transplantation HLA list profile. Also, anthropological conclusions are drawn.
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Human leukocyte antigen profiles of latin american populations: differential admixture and its potential impact on hematopoietic stem cell transplantation. BONE MARROW RESEARCH 2012; 2012:136087. [PMID: 23213535 PMCID: PMC3506882 DOI: 10.1155/2012/136087] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 10/12/2012] [Indexed: 12/29/2022]
Abstract
The outcome of hematopoietic stem cell transplantation (HSCT) is shaped by both clinical and genetic factors that determine its success. Genetic factors including human leukocyte antigen (HLA) and non-HLA genetic variants are believed to influence the risk of potentially fatal complications after the transplant. Moreover, ethnicity has been proposed as a factor modifying the risk of graft-versus-host disease. The populations of Latin America are a complex array of different admixture processes with varying degrees of ancestral population proportions that came in different migration waves. This complexity makes the study of genetic risks in this region complicated unless the extent of this variation is thoroughly characterized. In this study we compared the HLA-A and HLA-B allele group profiles for 31 Latin American populations and 61 ancestral populations from Iberia, Italy, Sub-Saharan Africa, and America. Results from population genetics comparisons show a wide variation in the HLA profiles from the Latin American populations that correlate with different admixture proportions. Populations in Latin America seem to be organized in at least three groups with (1) strong Amerindian admixture, (2) strong Caucasian component, and (3) a Caucasian-African gradient. These results imply that genetic risk assessment for HSCT in Latin America has to be adapted for different population subgroups rather than as a pan-Hispanic/Latino analysis.
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Qin Qin P, Su F, Xiao Yan W, Xing Z, Meng P, Chengya W, Jie S. Distribution of human leucocyte antigen-A, -B and -DR alleles and haplotypes at high resolution in the population from Jiangsu province of China. Int J Immunogenet 2011; 38:475-81. [DOI: 10.1111/j.1744-313x.2011.01029.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Arnaiz-Villena A, Parga-Lozano C, Moreno E, Areces C, Rey D, Gomez-Prieto P. The Origin of Amerindians and the Peopling of the Americas According to HLA Genes: Admixture with Asian and Pacific People. Curr Genomics 2011; 11:103-14. [PMID: 20885818 PMCID: PMC2874220 DOI: 10.2174/138920210790886862] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2009] [Revised: 12/01/2009] [Accepted: 12/08/2009] [Indexed: 11/22/2022] Open
Abstract
The classical three-waves theory of American peopling through Beringia was based on a mixed anthropological and linguistic methodology. The use of mtDNA, Y chromosome and other DNA markers offers different results according to the different markers and methodologies chosen by different authors. At present, the peopling of Americas remains uncertain, regarding: time of population, number of peopling waves and place of peopling entrance among other related issues. In the present review, we have gathered most available HLA data already obtained about First Native American populations, which raise some doubts about the classical three waves of American peopling hypothesis. In summary, our conclusions are: 1) North West Canadian Athabaskans have had gene flow with: a) close neighboring populations, b) Amerindians, c) Pacific Islanders including East Australians and d) Siberians; 2) Beringia was probably not the only entrance of people to America: Pacific Ocean boat trips may have contributed to the HLA genetic American profile (or the opposite could also be true); 3) Amerindians entrance to America may have been different to that of Athabaskans and Eskimos and Amerindians may have been in their lands long before Athabaskans and Eskimos because they present and altogether different set of HLA-DRB1 allele frequencies; 4) Amerindians show very few “particular alleles”, almost all are shared with other Amerindians, Athabaskans and Pacific Islanders, including East Australians and Siberians; 5) Our results do not support the three waves model of American peopling, but another model where the people entrance is not only Beringia, but also Pacific Coast. Reverse migration (America to Asia) is not discarded and different movements of people in either direction in different times are supported by the Athabaskan population admixture with Asian-Pacific population and with Amerindians, 6) HLA variability is more common than allele veriability in Amerindians. Finally, it is shown that gene genealogy analises should be completed with allele frequency analyses in population relatednes and migrations studies.
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Affiliation(s)
- A Arnaiz-Villena
- Department Immunology, University Complutense, The Madrid Regional Blood Center, Madrid, Spain
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Arnaiz-Villena A, Moscoso J, Granados J, Serrano-Vela JI, de la Peña A, Reguera R, Ferri A, Seclen E, Izaguirre R, Perez-Hernandez N, Vargas-Alarcon G. HLA Genes in Mayos Population from Northeast Mexico. Curr Genomics 2011; 8:466-75. [PMID: 19412332 PMCID: PMC2647159 DOI: 10.2174/138920207783591735] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2007] [Revised: 11/01/2007] [Accepted: 11/02/2007] [Indexed: 11/22/2022] Open
Abstract
HLA class I and class II alleles have been studied in 60 unrelated people belonging to Mayos ethnic group, which lives in the Mexican Pacific Sinaloa State. Mayos HLA profile was compared to other Amerindians and worldwide populations’ profile. A total of 14,896 chromosomes were used for comparisons. Genetic distances between populations, Neigbour-Joining dendrograms and correspondence analyses were performed to determine the genetic relationship among population. The new specific Mayo HLA haplotypes found are: HLA-A*02-B*35-DRB1*1406-DQB1*0301; HLA-A*02-B*48-DRB1*0404-DQB1*0302; HLA-A*24-B*51-DRB1*0407-DQB1*0302 and HLA-A*02-B*08-DRB1*0407-DQB1*0302. However, the typical Meso American HLADRB1*0407 represents a 40% of all DRB1 alleles. While common HLA characteristics are found in Amerindian distant ethnic groups, still new group specific HLA haplotypes are being found, suggesting that a common founder effect (i.e. high DRB1*0407) is noticed. Moreover, new HLA haplotypes are almost certainly appearing along time probably due to specific pathogen (?) selection for diversity. Mayo language is close to the Tarahumara one (another geographically close group); notwithstanding both groups are not genetically close according to our results, showing again the different evolution of genes and languages, which do not correlate. Finally, Sinaloa is one of the Mexican States in which more European genes are found. However, the results presented in this paper, where no European HLA genes are seen in Mayos, should have a bearing in establishing transplant programs and in HLA and disease studies.
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Affiliation(s)
- A Arnaiz-Villena
- Department of Immunology, Universidad Complutense, The Madrid Regional Blood Center, Madrid, Spain
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Arnaiz-Villena A, Abd-El-Fatah S, Granados-Silvestre MA, Parga-Lozano C, Gómez-Prieto P, Rey D, Areces C, Peñaranda P, Menjívar M, Rodríguez-Pérez JM, Granados J, Vargas-Alarcón G. Human Leukocyte Antigen-DRB1 Class II Genes in Mexican Amerindian Mazahuas: Genes and Languages Do Not Correlate. Genet Test Mol Biomarkers 2011; 15:97-102. [DOI: 10.1089/gtmb.2010.0055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Antonio Arnaiz-Villena
- Department of Immunology, University Complutense, The Madrid Regional Blood Center, Madrid, Spain
| | | | | | - Carlos Parga-Lozano
- Department of Immunology, University Complutense, The Madrid Regional Blood Center, Madrid, Spain
| | - Pablo Gómez-Prieto
- Department of Immunology, University Complutense, The Madrid Regional Blood Center, Madrid, Spain
| | - Diego Rey
- Department of Immunology, University Complutense, The Madrid Regional Blood Center, Madrid, Spain
| | - Cristina Areces
- Department of Immunology, University Complutense, The Madrid Regional Blood Center, Madrid, Spain
| | - Patricia Peñaranda
- Department of Hematology, The Madrid Regional Blood Center, Madrid, Spain
| | - Martha Menjívar
- Facultad de Química, Departamento de Biología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | | | - Julio Granados
- Immunogenetics Division, Transplantation Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, Mexico City, Mexico
| | - Gilberto Vargas-Alarcón
- Department of Molecular Biology, Instituto Nacional de Cardiología Ignacio Chávez. Mexico City, Mexico
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Martinez-Laso J, Montoya F, Areces C, Moscoso J, Silvera C, Rey D, Parga-Lozano C, Gomez-Prieto P, Enriquez de Salamanca M, Arnaiz-Villena A. HLA in Jaidukama: an Amerindian secluded Colombian population with new haplotypes and Asian and Pacific-shared alleles. Mol Biol Rep 2010; 38:3689-701. [DOI: 10.1007/s11033-010-0483-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2010] [Accepted: 11/09/2010] [Indexed: 12/01/2022]
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Fahrenwald NL, Belitz C, Keckler A. Outcome evaluation of 'sharing the gift of life': an organ and tissue donation educational program for American Indians. Am J Transplant 2010; 10:1453-9. [PMID: 20486910 DOI: 10.1111/j.1600-6143.2010.03120.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Culturally focused education about deceased donation is needed for American Indians (AIs). This study tested a program designed to impact intention to serve as a deceased donor for reservation dwelling AIs. A pre/posttest design and a community-based participatory research approach were used. The study was based upon the Transtheoretical Model. Adult participants (N = 1580, 58% women) were from four Northern Plains reservations. An outreach coordinator delivered the program using print and video materials. The outcome was stage of motivational readiness (SMR) to serve as a deceased donor. McNemar's test was used to compare pre- to postintervention changes in SMR. At baseline, 55% of participants were not thinking about being a donor (precontemplation stage) and 45% were thinking about it (contemplation stage). Postintervention, 43.1% of participants were unchanged in SMR and 56.9% progressed in SMR. Of those who progressed, 26.5% (n = 418) changed to the contemplation stage, 19.4% (n= 306) changed to the preparation stage (signed a donor card or joined a registry), and 11.1% (n = 175) confirmed a discussion of the decision with family (action stage). Progression in SMR from pre/post was significant, chi(2)(1) = 18.32, p < 0.05. The intervention resulted in important changes in deceased donor intentions for reservation dwelling AIs.
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Affiliation(s)
- N L Fahrenwald
- College of Nursing, South Dakota State University, Sioux Falls, SD, USA.
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Williams R, Chen YF, Endres R, Middleton D, Trucco M, Williams JD, Knowler W. Molecular variation at the HLA-A, B, C, DRB1, DQA1, and DQB1 loci in full heritage American Indians in Arizona: private haplotypes and their evolution. ACTA ACUST UNITED AC 2009; 74:520-33. [PMID: 19845915 DOI: 10.1111/j.1399-0039.2009.01381.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
A sample of 492 full heritage, unrelated residents of the Gila River Indian Community (GRIC) of Arizona were characterized for their high-resolution DNA alleles at the HLA-A, B, C, DRB1, DQA1, and DQB1 loci. Only five allelic categories are found at HLA-A, 10 at HLA-B, 8 at HLA-C and HLA-DR, and 4 at DQA1 and DQB1. There is little evidence for population structure at the 6 loci. Two 'private' alleles, B*5102 and B*4005, which are found nearly exclusively in American Indian populations in the desert southwest and northern Mexico, are likely new mutations after the first inhabitation of the area, the evolution of which are reflected in the contemporary distribution of their respective haplotypes. DRB1*1402 has the highest reported frequency of any specificity at the DRB1 locus, 0.7461, and serves as a sensitive probe for locating related east Asian populations. The haplotypes in this population also exhibit a highly restricted distribution and strong genetic disequilibria, which has important implications for matching solid organ and bone marrow allografts. It is shown that, when one considers HLA-A-B-DRB1 homozygotes as allograft donors for all full heritage members of the GRIC, 50% of the community would find a non-mismatched organ within the homozygotes for the six most common haplotypes. This raises questions about transplantation policy and whether, in the presence of high-frequency private alleles and a restricted number of haplotypes, the full heritage American Indian community of the desert southwest should act as its own pool of donors for its affected members.
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Affiliation(s)
- R Williams
- National Institutes of Health, Institute of Diabetes and Digestive and Kidney Diseases, Diabetes Epidemiology and Clinical Research Section, Phoenix, AZ, USA.
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Arnaiz-Villena A, Gonzalez-Alcos V, Serrano-Vela JI, Reguera R, Barbolla L, Parga-Lozano C, Gómez-Prieto P, Abd-El-Fatah-Khalil S, Moscoso J. HLA genes in Uros from Titikaka Lake, Peru: origin and relationship with other Amerindians and worldwide populations. Int J Immunogenet 2009; 36:159-67. [PMID: 19490211 DOI: 10.1111/j.1744-313x.2009.00841.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Uros population from the Titikaka Lake live in about 42 floating reed ('totora') islands in front of Puno City (Peru) at a 4000 m high altiplano. They present both an mtDNA and a human leucocyte antigen (HLA) profile different from the surrounding populations: mtDNA A2 haplogroup is common to Uros and Amazon forest lowland Amerindians. HLA genetic distances between populations have been calculated and neighbour-joining dendrograms and correspondence analyses were carried out. Approximately 15 006 HLA chromosomes from worldwide populations have been used for comparisons. Only eight HLA-A alleles have been found, three of them accounting for most of the frequencies. The same phenomenon is seen for HLA-B, HLA-DRB1 and HLA-DQB1 alleles: a few alleles (3, 4 and 3, respectively) are present in most individuals. The presence of HLA-B*4801 and HLA-DRB1*0901 alleles in a relatively high frequency (although not the most frequent alleles found) is a characteristic shared with Asians and some populations from the Andean altiplano. Three specific Uros haplotypes have been found among the most frequent ones: HLA-A*680102-B*3505-DRB1*0403-DQB1*0302; HLA-A*2402-B*1504-DRB1*1402-DQB1*0301; and HLA-A*2402-B*4801-DRB1*0403-DQB1*0302. The present study suggests that Uros may have been one of the first populations from the shores of the Titikaka Lake coming from the Amazonian forest, which might have given rise to other later differentiated ethnic group (i.e. Aymaras). Uros HLA profile is also useful to study genetic epidemiology of diseases linked to HLA and to construct a future transplant waiting list by adding up regional lists in order to get a bigger pool for transplanting with better HLA matching.
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Affiliation(s)
- A Arnaiz-Villena
- Department of Immunology, University Complutense, The Madrid Regional Blood Center, Madrid, Spain.
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25
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Martinez-Laso J, Siles N, Moscoso J, Zamora J, Serrano-Vela JI, R-A-Cachafeiro JI, Castro MJ, Serrano-Rios M, Arnaiz-Villena A. Origin of Bolivian Quechua Amerindians: their relationship with other American Indians and Asians according to HLA genes. Eur J Med Genet 2009; 49:169-85. [PMID: 16530714 DOI: 10.1016/j.ejmg.2005.04.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2004] [Indexed: 11/21/2022]
Abstract
The Incas were Quechua-speaking people who settled down near Cuzco (Peru). They had an empire ranging from Ecuador to Chile, when Spanish conquerors seized their kingdom around 1532 AD. Nowadays, Quechua-speaking people inhabits Colombia, Ecuador, Bolivia, Peru and Argentina; however, Quechua language was imposed by both Incas and Spaniards to many non-Quechua speaking communities. We have taken a sample of Quechuan Bolivian blood donors from La Paz (Titicaca Lake region) where Inca-Quechuas themselves believed that came from. This group was compared with 6892 individuals from 68 different world populations regarding HLA/DNA allele frequencies distribution. Genetic distances, dendrograms and correspondence analyses were carried out in order to establish relationships among populations. The main conclusions are: (1) DRB1 and -DQB1 haplotypes shared with Asians are found in Quechuas and are not observed in other (Mesoamerican) Amerindians. (2) Aymara-speaking people from the same Titicaca Lake (La Paz) area shows close genetic distances with Quechuas in one dimension results (genetic distances); however, their HLA gene frequency distribution differs according to Neighbor-Joining (NJ) trees and correspondence analysis (multidimensional and more reliable analyses). Also, the common high frequency Asian and Athabascan HLA-DRB1*0901 allele is found in Quechuas in a significant frequency. Quechuas are clearly included within the Amerindian group.
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Affiliation(s)
- Jorge Martinez-Laso
- Departamento de Inmunologia, Facultad de Medicina, Hospital 12 de Octubre, Universidad Complutense, Pabellon 5, planta 4. Avda. Complutense s/n, 28040 Madrid, Spain
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26
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Reveille JD, Maganti RM. Subtypes of HLA-B27: history and implications in the pathogenesis of ankylosing spondylitis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2009; 649:159-76. [PMID: 19731628 DOI: 10.1007/978-1-4419-0298-6_12] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
HLA-B27 represents a family of 38 closely related cell surface proteins (encoded by the alleles HLA-B*2701-39) called subtypes of HLA-B27, most of which have evolved from the ubiquitous HLA-B*2705 (specifically the B*27052 allele). HLA-B27 subtypes are largely characterized by nucleotide substitutions (mostly nonsynonymous) in exons 2 and 3 which encode alpha1 and alpha2 domains ofthe peptide binding groove respectively. Table 1 shows the description of sequences of HLA-B27 allele sequences. The subtypes could have arisen from B*2705 by point mutation (B*2703, B*2709, B*2704), gene conversion (B*2701, B*2702, B*2708) and reciprocal recombination (B*2707) B*2706 could have arisen by interlocus gene conversion. Studies from different parts of the world reveal differences in the population distribution.
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Affiliation(s)
- John D Reveille
- Division of Rheumatology and Clinical Immunogenetics, University of Texas Health Science Center, Houston, TX 77026, USA.
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Balancing selection and heterogeneity across the classical human leukocyte antigen loci: a meta-analytic review of 497 population studies. Hum Immunol 2008; 69:443-64. [PMID: 18638659 DOI: 10.1016/j.humimm.2008.05.001] [Citation(s) in RCA: 262] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2008] [Revised: 05/03/2008] [Accepted: 05/07/2008] [Indexed: 12/21/2022]
Abstract
This paper presents a meta-analysis of high-resolution human leukocyte antigen (HLA) allele frequency data describing 497 population samples. Most of the datasets were compiled from studies published in eight journals from 1990 to 2007; additional datasets came from the International Histocompatibility Workshops and from the AlleleFrequencies.net database. In all, these data represent approximately 66,800 individuals from throughout the world, providing an opportunity to observe trends that may not have been evident at the time the data were originally analyzed, especially with regard to the relative importance of balancing selection among the HLA loci. Population genetic measures of allele frequency distributions were summarized across populations by locus and geographic region. A role for balancing selection maintaining much of HLA variation was confirmed. Further, the breadth of this meta-analysis allowed the ranking of the HLA loci, with DQA1 and HLA-C showing the strongest balancing selection and DPB1 being compatible with neutrality. Comparisons of the allelic spectra reported by studies since 1990 indicate that most of the HLA alleles identified since 2000 are very-low-frequency alleles. The literature-based allele-count data, as well as maps summarizing the geographic distributions for each allele, are available online.
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Fahrenwald N, Belitz C, Keckler A, Sharma M. Sharing the Gift of Life: an intervention to increase organ and tissue donation for American Indians. Prog Transplant 2007. [DOI: 10.7182/prtr.17.4.93t8u036m1346478] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Cano P, Klitz W, Mack SJ, Maiers M, Marsh SGE, Noreen H, Reed EF, Senitzer D, Setterholm M, Smith A, Fernández-Viña M. Common and well-documented HLA alleles: report of the Ad-Hoc committee of the american society for histocompatiblity and immunogenetics. Hum Immunol 2007; 68:392-417. [PMID: 17462507 DOI: 10.1016/j.humimm.2007.01.014] [Citation(s) in RCA: 166] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2007] [Accepted: 01/17/2007] [Indexed: 10/23/2022]
Abstract
In histocompatibility testing some genotype ambiguities are almost always resolved into the genotype with the most common alleles. To achieve unambiguous assignments additional unwieldy tests are performed. The American Society for Histocompatibility and Immunogenetics formed a committee to define what human leukocyte antigen (HLA) genotypes do not need to be resolved in external proficiency testing. The tasks included detailed analysis of large datasets of high-resolution typing and thorough review of the pertinent scientific literature. Strict criteria were used to create a catalogue of common and well-documented (CWD) alleles. In total, 130, 245, 81, and 143 of the highly polymorphic HLA-A, -B, -C, and DRB1 loci fell into the CWD category; these represent 27%-30% of all alleles recognized. For the loci DRB3/4/5, DQA1, DQB1, and DPB1, a total of 29, 16, 26, and 52 CWD alleles were identified. A recommendation indicated that an acceptable report should only include one possible genotype; multiple genotypes can only be reported if only one of these includes two alleles of the CWD group. Exceptions in which resolution is not necessary are ambiguities involving functional alleles with identical sequences in the antigen recognition site. The criteria were established for proficiency testing, which could be a valuable tool when making clinical histocompatibility decisions.
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Affiliation(s)
- Pedro Cano
- University of Texas M. D. Anderson Cancer Center, HLA Typing Laboratory, Houston, Texas 77054, USA
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Fontecchio G, Ventura L, Azzarone R, Fioroni MA, Fornaciari G, Papola F. HLA-DRB genotyping of an Italian mummy from the 16th century with signs of rheumatoid arthritis. Ann Rheum Dis 2006; 65:1676-7. [PMID: 17105863 PMCID: PMC1798452 DOI: 10.1136/ard.2006.051490] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Suárez A, Valbuena MC, Rey M, de Porras Quintana L. Association of HLA subtype DRB1*0407 in Colombian patients with actinic prurigo. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2006; 22:55-8. [PMID: 16606409 DOI: 10.1111/j.1600-0781.2006.00205.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Human leukocyte antigen (HLA) DRB1*0407 had been associated with actinic prurigo in different populations. This class II HLA-DR subtype had not been studied in Colombia. OBJECTIVE The objective of this study was to establish whether there was an association of actinic prurigo with HLA DR in a Colombian population. MATERIALS AND METHODS Forty patients with a clinical diagnosis of actinic prurigo and 40 healthy subjects, paired by age, sex and birthplace, were studied. HLA typing for HLA DRB1 and DRB1*04, if necessary, was performed by the PCR-SSP method using blood samples. RESULTS A high frequency of HLA DRB1*0407 was found in the patients (97.5% vs. 30%; P<0.00001). The allelic frequency of HLA DRB1*0407 was 63.8% in the case group, and 14.5% in the controls (P<0.00001). In the control group, there was a higher frequency of the alleles DRB1*01 (14.5% vs. 1.25%; P=0.0027) and DRB1*13 (23.7% vs. 2.5%; P=0.00013). LIMITATIONS The small number of controls does not allow us to drive conclusions about other HLA alleles. CONCLUSIONS HLA subtype DRB1*0407, found in actinic prurigo patients in studies conducted in England, Scotland, Ireland and Mexico, was also associated in Colombian patients. This finding, concordant in patients from different ethnic groups, could be helpful in the diagnosis of this disease and probably important in its pathogenesis. DRB1*01 and DRB1*13 alleles were more frequent in controls than in patients; we do not know whether they play any role in the resistance to the disease.
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Affiliation(s)
- Alfonso Suárez
- Centro Dermatológico Federico Lleras Acosta, E.S.E. Bogota, Colombia
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Spínola H, Brehm A, Bettencourt B, Middleton D, Bruges-Armas J. HLA class I and II polymorphisms in Azores show different settlements in Oriental and Central islands. ACTA ACUST UNITED AC 2005; 66:217-30. [PMID: 16101833 DOI: 10.1111/j.1399-0039.2005.00471.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Human leucocyte antigen-A, -B, -Cw, -DRB1, -DQA1 and -DQB1 polymorphisms were examined in the Azorean population. The data were obtained at high-resolution level, using polymerase chain reaction (PCR) with sequence-specific primer, PCR-sequence-specific oligonucleotides and sequence-based typing. The most frequent allele in each locus was: A*0201 (24.5%), B*510101 (9.8%), Cw*0401 (14.8%), DRB1*070101 (18.3%), DQA1*0201 (17.4%) and DQB1*0301 (19.4%). The predominant extended haplotype was A*0202-B*1503-Cw*0202-DRB1*090102-DQA1*0303- DQB1*0202 (1.9%), which was found to be absent in the Portuguese mainland. The present study corroborates historical sources that say the Azores were populated not only by Portuguese but also by other Europeans, mostly Flemish people. Despite dendrogram analysis showing some remote Asian genetic affinities, the lack of specific alleles and haplotypes from those populations does not allow us to conclude for direct influence. Haplotype and allele frequencies in Azores show no homogeneous distribution between Oriental and Central islands of this archipelago. The Oriental islands harbour several haplotypes already found in mainland Portugal and identified as Mediterranean and European. The Central group of islands on the contrary clearly shows an influence of north Europeans (most probably derived from a well-documented Flemish settlement), with much less affinity to mainland Portugal.
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Affiliation(s)
- H Spínola
- Human Genetics Laboratory, University of Madeira, Funchal, Portugal
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Fahrenwald NL, Stabnow W. Sociocultural perspective on organ and tissue donation among reservation-dwelling American Indian adults. ETHNICITY & HEALTH 2005; 10:341-54. [PMID: 16191731 DOI: 10.1080/13557850500168826] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
OBJECTIVE To discover the sociocultural patterns that influence decisions about organ and tissue donation among American Indian (AI) adults. DESIGN This qualitative ethnographic study used a social-ecological framework. A snowball sampling technique was used to recruit 21 Oglala Lakota Sioux participants (age >or= 19 years) living on the Pine Ridge Indian Reservation in South Dakota, USA. Face-to-face interviews were conducted using open-ended questions derived from the social-ecological perspective of Stokols (1992). Interviews were audiotaped and transcribed. Data were categorized into construct codes to identify concepts and to discover emerging themes. RESULTS Personal and environmental themes regarding organ and tissue donation emerged. There were two personal themes: uncertain knowledge and the diabetes crisis. Participants knew very little about organ and tissue donation but there was a basic understanding of donor/recipient compatibility. The prevalence of diabetes in the community is contributing to a dire need for kidney donors. The diabetes crisis was acknowledged by every participant. There were three environmental themes: cultural transitions, healthcare system competence and outreach efforts. Traditional cultural beliefs such as entering the spirit world with an intact body were acknowledged. However, conversations reflected re-examination of traditional beliefs because of the need for kidney donors. The healthcare environmental context of organ and tissue donation emerged as a theme. Participants were not confident that the local health system was prepared to either address traditional beliefs about organ and tissue donation or implement a donation protocol. The final theme was the environmental context of outreach efforts. Participants desired relevant outreach targeted to the community and disseminated through local communication networks including the family, the media and tribal leaders. CONCLUSIONS Sociocultural factors relevant to the personal and environmental context of the social ecological model influenced beliefs about organ and tissue donation among the Lakota people in this study. Outreach programs aimed at increasing donation need to respect traditional beliefs yet present the choice about organ and tissue donation within the cultural context. Telling the stories of community members affected by both diabetes and donation is important. Promoting family conversation is critical. Healthcare systems must approach potential donor families with an understanding of traditional beliefs and respect for the process of family communication about organ and tissue donation.
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Schiff MA, Apple RJ, Lin P, Nelson JL, Wheeler CM, Becker TM. HLA Alleles and Risk of Cervical Intraepithelial Neoplasia Among Southwestern American Indian Women. Hum Immunol 2005; 66:1050-6. [PMID: 16386646 DOI: 10.1016/j.humimm.2005.09.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2005] [Accepted: 09/14/2005] [Indexed: 10/25/2022]
Abstract
An increase in cervical intraepithelial neoplasia (CIN) has been described in American Indian women in New Mexico. Differences in human leukocyte antigen (HLA) alleles have been reported in cervical intraepithelial neoplasia (CIN) compared with controls in other populations. We investigated HLA alleles and CIN in Southwest American Indian women. The case control study included 89 women with biopsy-proven CIN II/III (diagnosed November 1994 through October 1997) and 271 similar women with normal cervical epithelium from the same clinics. DRB1, DQB1, and DPB1 alleles were determined using DNA typing techniques. DQA1 and HLA-A allele typing was included for some subjects (randomly chosen n = 37 and n = 163 cases and controls, respectively). We found a decreased risk of CIN with DRB1*1402 (OR 0.5, 95% CI 0.3-0.9) and an increased risk with DRB1*1501 (OR 2.7, 95% CI 0.9-7.3). Additionally, DQA1*0102 was associated with increased risk (OR 4.5, 95% CI 1.3-5.3) and HLA-A*02 with decreased risk (OR 0.4, CI 0.2-0.9). Our findings are discussed along with studies in other populations.
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Affiliation(s)
- Melissa A Schiff
- Department of Epidemiology, School of Public Health and Community Medicine, University of Washington, Seattle, WA 98104, USA
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Vargas-Alarcón G, Hernández-Pacheco G, Moscoso J, Pérez-Hernández N, Murguía LE, Moreno A, Serrano-Vela JI, Granados J, Arnaiz-Villena A. HLA genes in Mexican Teeneks: HLA genetic relationship with other worldwide populations. Mol Immunol 2005; 43:790-9. [PMID: 16111752 DOI: 10.1016/j.molimm.2005.07.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2005] [Accepted: 07/06/2005] [Indexed: 10/25/2022]
Abstract
The HLA allele frequency distribution of the Mexican Teenek Indians has been studied and compared with those of other First American Natives and worldwide populations (a total of 15694 chromosomes from 73 different populations were analyzed). This study corroborate the restricted HLA polymorphism in the Amerindian populations and demonstrate how the Amerindians show a relatively homogeneity as opposed to other First Native American groups. Finally, the present data support previous ones that state the lack of complete correlation between language and genetics in micro-environmental studies; Teenek Mayan language does not correspond with a close Mayan (Guatemala) relatedness.
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Affiliation(s)
- Gilberto Vargas-Alarcón
- Department of Physiology and Grupo de Estudio en Genómica y Proteómica en Enfermedades Cardiovasculares, Instituto Nacional de Cardiología Ignacio Chávez, 14080 Mexico City, Mexico.
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Arnaiz-Villena A, Siles N, Moscoso J, Zamora J, Serrano-Vela JI, Gomez-Casado E, Castro MJ, Martinez-Laso J. Origin of Aymaras from Bolivia and their relationship with other Amerindians according to HLA genes. ACTA ACUST UNITED AC 2005; 65:379-90. [PMID: 15787722 DOI: 10.1111/j.1399-0039.2005.00356.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aymara Amerindians from the Titicaca Lake Andean highlands are studied for HLA-A, HLA-B, HLA-DRB1 and HLA-DQB1 gene frequencies. Genetic distances, neighbour-joining and correspondence analyses are performed by using other Amerindian and worldwide populations (15384 chromosomes are studied). The HLA genetic profile of Aymaras is different from neighbouring and language-related Quechuas (Incas). Both Quechuas and Aymaras seem to present an HLA-DRB1*0901 high frequency, which is present in a very low frequency or absent in Mesoamericans (Mazatecans, Mayans) and most studied Amerindians. Moreover, it is observed a closer relatedness of Aymaras with Amerindians from the Amazon Basin and Chaco lowlands, compared to Quechuans.
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Affiliation(s)
- A Arnaiz-Villena
- Department of Immunology, Universidad Complutense, Madrid, Spain.
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