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Zollner L, Torres D, Briceno I, Gilbert M, Torres-Mejía G, Dennis J, Bolla MK, Wang Q, Hamann U, Lorenzo Bermejo J. Native American ancestry and breast cancer risk in Colombian and Mexican women: ruling out potential confounding through ancestry-informative markers. Breast Cancer Res 2023; 25:111. [PMID: 37784177 PMCID: PMC10544431 DOI: 10.1186/s13058-023-01713-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 09/18/2023] [Indexed: 10/04/2023] Open
Abstract
BACKGROUND Latin American and Hispanic women are less likely to develop breast cancer (BC) than women of European descent. Observational studies have found an inverse relationship between the individual proportion of Native American ancestry and BC risk. Here, we use ancestry-informative markers to rule out potential confounding of this relationship, estimating the confounder-free effect of Native American ancestry on BC risk. METHODS AND STUDY POPULATION We used the informativeness for assignment measure to select robust instrumental variables for the individual proportion of Native American ancestry. We then conducted separate Mendelian randomization (MR) analyses based on 1401 Colombian women, most of them from the central Andean regions of Cundinamarca and Huila, and 1366 Mexican women from Mexico City, Monterrey and Veracruz, supplemented by sensitivity and stratified analyses. RESULTS The proportion of Colombian Native American ancestry showed a putatively causal protective effect on BC risk (inverse variance-weighted odds ratio [OR] = 0.974 per 1% increase in ancestry proportion, 95% confidence interval [CI] 0.970-0.978, p = 3.1 × 10-40). The corresponding OR for Mexican Native American ancestry was 0.988 (95% CI 0.987-0.990, p = 1.4 × 10-44). Stratified analyses revealed a stronger association between Native American ancestry and familial BC (Colombian women: OR = 0.958, 95% CI 0.952-0.964; Mexican women: OR = 0.973, 95% CI 0.969-0.978), and stronger protective effects on oestrogen receptor (ER)-positive BC than on ER-negative and triple-negative BC. CONCLUSIONS The present results point to an unconfounded protective effect of Native American ancestry on BC risk in both Colombian and Mexican women which appears to be stronger for familial and ER-positive BC. These findings provide a rationale for personalised prevention programmes that take genetic ancestry into account, as well as for future admixture mapping studies.
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Affiliation(s)
- Linda Zollner
- Statistical Genetics Research Group, Institute of Medical Biometry, Heidelberg University, Heidelberg, Germany
- Molecular Genetics of Breast Cancer, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 580, 69120, Heidelberg, Germany
- Division of Proteomics of Stem Cells and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Diana Torres
- Molecular Genetics of Breast Cancer, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 580, 69120, Heidelberg, Germany
- Institute of Human Genetics, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Ignacio Briceno
- Instituto de Genética Humana, Universidad de la Sabana, Bogotá, Colombia
| | - Michael Gilbert
- Molecular Genetics of Breast Cancer, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 580, 69120, Heidelberg, Germany
| | - Gabriela Torres-Mejía
- Center for Population Health Research, National Institute of Public Health, Cuernavaca, Morelos, Mexico
| | - Joe Dennis
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Manjeet K Bolla
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Qin Wang
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Ute Hamann
- Molecular Genetics of Breast Cancer, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 580, 69120, Heidelberg, Germany.
| | - Justo Lorenzo Bermejo
- Statistical Genetics Research Group, Institute of Medical Biometry, Heidelberg University, Heidelberg, Germany
- Department of Biostatistics for Precision Oncology, Institut de Cancérologie Strasbourg Europe, Strasbourg, France
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Winful T, McCormack K, Mueller E, Chen L, Clemente MR, Torres JB. Exploring the legacy of African and Indigenous Caribbean admixture in Puerto Rico. AMERICAN JOURNAL OF BIOLOGICAL ANTHROPOLOGY 2023; 182:194-209. [PMID: 37525538 DOI: 10.1002/ajpa.24814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 05/23/2023] [Accepted: 06/23/2023] [Indexed: 08/02/2023]
Abstract
OBJECTIVES From an anthropological genetic perspective, little is known about the ethnogenesis of African descendants in Puerto Rico. Furthermore, historical interactions between Indigenous Caribbean and African descendant peoples that may be reflected in the ancestry of contemporary populations are understudied. Given this dearth of genetic research and the precedence for Afro-Indigenous interactions documented by historical, archeological, and other lines of evidence, we sought to assess the biogeographic origins of African descendant Puerto Ricans and to query the potential for Indigenous ancestry within this community. MATERIALS AND METHODS Saliva samples were collected from 58 self-identified African descendant Puerto Ricans residing in Puerto Rico. We sequenced whole mitochondrial genomes and genotyped Y chromosome haplogroups for each male individual (n = 25). Summary statistics, comparative analyses, and network analysis were used to assess diversity and variation in haplogroup distribution between the sample and comparative populations. RESULTS As indicated by mitochondrial haplogroups, 66% had African, 5% had European, and 29% had Indigenous American matrilines. Along the Y chromosome, 52% had African, 28% had Western European, 16% had Eurasian, and, notably, 4% had Indigenous American patrilines. Both mitochondrial and Y chromosome haplogroup frequencies were significantly different from several comparative populations. DISCUSSION Biogeographic origins are consistent with historical accounts of African, Indigenous American, and European ancestry. However, this first report of Indigenous American paternal ancestry in Puerto Rico suggests distinctive features within African descendant communities on the island. Future studies expanding sampling and incorporating higher resolution genetic markers are necessary to more fully understand African descendant history in Puerto Rico.
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Affiliation(s)
- Taiye Winful
- Department of Anthropology, Genetic Anthropology and Biocultural Studies Laboratory, Vanderbilt University, Nashville, Tennessee, USA
| | - Katie McCormack
- Department of Anthropology, Genetic Anthropology and Biocultural Studies Laboratory, Vanderbilt University, Nashville, Tennessee, USA
| | - Elsa Mueller
- Department of Anthropology, Genetic Anthropology and Biocultural Studies Laboratory, Vanderbilt University, Nashville, Tennessee, USA
| | - Lijuan Chen
- Department of Anthropology, Genetic Anthropology and Biocultural Studies Laboratory, Vanderbilt University, Nashville, Tennessee, USA
| | | | - Jada Benn Torres
- Department of Anthropology, Genetic Anthropology and Biocultural Studies Laboratory, Vanderbilt University, Nashville, Tennessee, USA
- Vanderbilt Genetics Institute, Vanderbilt University, Nashville, Tennessee, USA
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3
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Aizpurua-Iraola J, Rasal R, Prieto L, Comas D, Bonet N, Casals F, Calafell F, Vásquez P. Population analysis of complete mitogenomes for 334 samples from El Salvador. Forensic Sci Int Genet 2023; 66:102906. [PMID: 37364481 DOI: 10.1016/j.fsigen.2023.102906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 06/09/2023] [Accepted: 06/10/2023] [Indexed: 06/28/2023]
Abstract
The use of mitochondrial DNA (mtDNA) in the field of forensic genetics is widely spread mainly due to its advantages when identifying highly degraded samples. In this sense, massive parallel sequencing has made the analysis of the whole mitogenome more accessible, noticeably increasing the informativeness of mtDNA haplotypes. The civil war (1980-1992) in El Salvador caused many deaths and disappearances (including children) all across the country and the economic and social instability after the war forced many people to emigration. For this reason, different organizations have collected DNA samples from relatives with the aim of identifying missing people. Thus, we present a dataset containing 334 complete mitogenomes from the Salvadoran general population. To the best of our knowledge, this is the first publication of a nationwide forensic-quality complete mitogenome database of any Latin American country. We found 293 different haplotypes, with a random match probability of 0.0041 and 26.6 mean pairwise differences, which is similar to other Latin American populations, and which represent a marked improvement from the values obtained with just control region sequences. These haplotypes belong to 54 different haplogroups, being 91% of them of Native American origin. Over a third (35.9%) of the individuals carried at least a heteroplasmic site (excluding length heteroplasmies). Ultimately, the present database aims to represent mtDNA haplotype diversity in the general Salvadoran populations as a basis for the identification of people that disappeared during or after the civil war.
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Affiliation(s)
- Julen Aizpurua-Iraola
- Institut de Biologia Evolutiva (CSIC-UPF), Universitat Pompeu Fabra, Departament de Medicina i Ciències de la Vida, Barcelona, Spain
| | - Raquel Rasal
- Genomics Core Facility, Departament de Medicina i Ciències de la Vida, Universitat Pompeu Fabra, Parc de Recerca Biomèdica de Barcelona, Barcelona, Spain
| | - Lourdes Prieto
- Instituto de Ciencias Forenses, Universidad de Santiago de Compostela, Santiago de Compostela, Spain; Comisaría General de Policía Científica. DNA Laboratory, Madrid, Spain
| | - David Comas
- Institut de Biologia Evolutiva (CSIC-UPF), Universitat Pompeu Fabra, Departament de Medicina i Ciències de la Vida, Barcelona, Spain
| | - Núria Bonet
- Genomics Core Facility, Departament de Medicina i Ciències de la Vida, Universitat Pompeu Fabra, Parc de Recerca Biomèdica de Barcelona, Barcelona, Spain
| | - Ferran Casals
- Genomics Core Facility, Departament de Medicina i Ciències de la Vida, Universitat Pompeu Fabra, Parc de Recerca Biomèdica de Barcelona, Barcelona, Spain; Departament de Genètica, Microbiologia i Estadística, Universitat de Barcelona, Barcelona, Spain; Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, Barcelona, Spain
| | - Francesc Calafell
- Institut de Biologia Evolutiva (CSIC-UPF), Universitat Pompeu Fabra, Departament de Medicina i Ciències de la Vida, Barcelona, Spain
| | - Patricia Vásquez
- Asociación Pro-Búsqueda de Niñas y Niños Desaparecidos de El Salvador, San Salvador, El Salvador
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4
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De Oliveira TC, Secolin R, Lopes-Cendes I. A review of ancestrality and admixture in Latin America and the caribbean focusing on native American and African descendant populations. Front Genet 2023; 14:1091269. [PMID: 36741309 PMCID: PMC9893294 DOI: 10.3389/fgene.2023.1091269] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 01/09/2023] [Indexed: 01/21/2023] Open
Abstract
Genomics can reveal essential features about the demographic evolution of a population that may not be apparent from historical elements. In recent years, there has been a significant increase in the number of studies applying genomic epidemiological approaches to understand the genetic structure and diversity of human populations in the context of demographic history and for implementing precision medicine. These efforts have traditionally been applied predominantly to populations of European origin. More recently, initiatives in the United States and Africa are including more diverse populations, establishing new horizons for research in human populations with African and/or Native ancestries. Still, even in the most recent projects, the under-representation of genomic data from Latin America and the Caribbean (LAC) is remarkable. In addition, because the region presents the most recent global miscegenation, genomics data from LAC may add relevant information to understand population admixture better. Admixture in LAC started during the colonial period, in the 15th century, with intense miscegenation between European settlers, mainly from Portugal and Spain, with local indigenous and sub-Saharan Africans brought through the slave trade. Since, there are descendants of formerly enslaved and Native American populations in the LAC territory; they are considered vulnerable populations because of their history and current living conditions. In this context, studying LAC Native American and African descendant populations is important for several reasons. First, studying human populations from different origins makes it possible to understand the diversity of the human genome better. Second, it also has an immediate application to these populations, such as empowering communities with the knowledge of their ancestral origins. Furthermore, because knowledge of the population genomic structure is an essential requirement for implementing genomic medicine and precision health practices, population genomics studies may ensure that these communities have access to genomic information for risk assessment, prevention, and the delivery of optimized treatment; thus, helping to reduce inequalities in the Western Hemisphere. Hoping to set the stage for future studies, we review different aspects related to genetic and genomic research in vulnerable populations from LAC countries.
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Affiliation(s)
- Thais C. De Oliveira
- Department of Translational Medicine, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
- The Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Campinas, Brazil
| | - Rodrigo Secolin
- Department of Translational Medicine, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
- The Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Campinas, Brazil
| | - Iscia Lopes-Cendes
- Department of Translational Medicine, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
- The Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Campinas, Brazil
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5
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García-Olivares V, Rubio-Rodríguez LA, Muñoz-Barrera A, Díaz-de Usera A, Jáspez D, Iñigo-Campos A, Rodríguez Pérez MDC, Cabrera de León A, Lorenzo-Salazar JM, González-Montelongo R, Cabrera VM, Flores C. Digging into the admixture strata of current-day Canary Islanders based on mitogenomes. iScience 2022; 26:105907. [PMID: 36647378 PMCID: PMC9840145 DOI: 10.1016/j.isci.2022.105907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/18/2022] [Accepted: 12/19/2022] [Indexed: 12/30/2022] Open
Abstract
The conquest of the Canary Islands by Europeans began at the beginning of the 15th century and culminated in 1496 with the surrender of the aborigines. The collapse of the aboriginal population during the conquest and the arrival of settlers caused a drastic change in the demographic composition of the archipelago. To shed light on this historical process, we analyzed 896 mitogenomes of current inhabitants from the seven main islands. Our findings confirm the continuity of aboriginal maternal contributions and the persistence of their genetic footprints in the current population, even at higher levels (>60% on average) than previously evidenced. Moreover, the age estimates for most autochthonous founder lineages support a first aboriginal arrival to the islands at the beginning of the first millennium. We also revealed for the first time that the main recognizable genetic influences from Europe are from Portuguese and Galicians.
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Affiliation(s)
- Víctor García-Olivares
- Genomics Division, Instituto Tecnológico y de Energías Renovables (ITER), Santa Cruz de Tenerife, Spain,Plataforma Genómica de Alto Rendimiento para el Estudio de la Biodiversidad, Instituto de Productos Naturales y Agrobiología (IPNA), Consejo Superior de Investigaciones Científicas, San Cristóbal de La Laguna, Spain
| | - Luis A. Rubio-Rodríguez
- Genomics Division, Instituto Tecnológico y de Energías Renovables (ITER), Santa Cruz de Tenerife, Spain
| | - Adrián Muñoz-Barrera
- Genomics Division, Instituto Tecnológico y de Energías Renovables (ITER), Santa Cruz de Tenerife, Spain
| | - Ana Díaz-de Usera
- Genomics Division, Instituto Tecnológico y de Energías Renovables (ITER), Santa Cruz de Tenerife, Spain
| | - David Jáspez
- Genomics Division, Instituto Tecnológico y de Energías Renovables (ITER), Santa Cruz de Tenerife, Spain
| | - Antonio Iñigo-Campos
- Genomics Division, Instituto Tecnológico y de Energías Renovables (ITER), Santa Cruz de Tenerife, Spain
| | | | - Antonio Cabrera de León
- Research Unit, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain,Área de Medicina Preventiva y Salud Pública, Universidad de La Laguna, Santa Cruz de Tenerife, Spain
| | - José M. Lorenzo-Salazar
- Genomics Division, Instituto Tecnológico y de Energías Renovables (ITER), Santa Cruz de Tenerife, Spain
| | - Rafaela González-Montelongo
- Genomics Division, Instituto Tecnológico y de Energías Renovables (ITER), Santa Cruz de Tenerife, Spain,Plataforma Genómica de Alto Rendimiento para el Estudio de la Biodiversidad, Instituto de Productos Naturales y Agrobiología (IPNA), Consejo Superior de Investigaciones Científicas, San Cristóbal de La Laguna, Spain
| | | | - Carlos Flores
- Genomics Division, Instituto Tecnológico y de Energías Renovables (ITER), Santa Cruz de Tenerife, Spain,Plataforma Genómica de Alto Rendimiento para el Estudio de la Biodiversidad, Instituto de Productos Naturales y Agrobiología (IPNA), Consejo Superior de Investigaciones Científicas, San Cristóbal de La Laguna, Spain,Research Unit, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain,CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain,Facultad de Ciencias de la Salud, Universidad Fernando de Pessoa Canarias, Las Palmas de Gran Canaria, Spain,Corresponding author
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6
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Labuda D, Harding T, Milot E, Vézina H. The effective family size of immigrant founders predicts their long-term demographic outcome: From Québec settlers to their 20th-century descendants. PLoS One 2022; 17:e0266079. [PMID: 35507549 PMCID: PMC9067642 DOI: 10.1371/journal.pone.0266079] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 03/14/2022] [Indexed: 11/19/2022] Open
Abstract
Population history reconstruction, using extant genetic diversity data, routinely relies on simple demographic models to project the past through ascending genealogical-tree branches. Because genealogy and genetics are intimately related, we traced descending genealogies of the Québec founders to pursue their fate and to assess their contribution to the present-day population. Focusing on the female and male founder lines, we observed important sex-biased immigration in the early colony years and documented a remarkable impact of these early immigrants on the genetic make-up of 20th-century Québec. We estimated the immigrants’ survival ratio as a proportion of lineages found in the 1931–60 Québec to their number introduced within the immigration period. We assessed the effective family size, EFS, of all immigrant parents and their Québec-born descendants. The survival ratio of the earliest immigrants was the highest and declined over centuries in association with the immigrants’ EFS. Parents with high EFS left plentiful married descendants, putting EFS as the most important variable determining the parental demographic success throughout time for generations ahead. EFS of immigrant founders appears to predict their long-term demographic and, consequently, their genetic outcome. Genealogically inferred immigrants’ "autosomal" genetic contribution to 1931–60 Québec from consecutive immigration periods follow the same yearly pattern as the corresponding maternal and paternal lines. Québec genealogical data offer much broader information on the ancestral diversity distribution than genetic scrutiny of a limited population sample. Genealogically inferred population history could assist studies of evolutionary factors shaping population structure and provide tools to target specific health interventions.
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Affiliation(s)
- Damian Labuda
- Centre de Recherche, CHU Sainte-Justine, Université de Montréal, Montreal, Québec, Canada
- Département de Pédiatrie, Université de Montréal, Montreal, Québec, Canada
- * E-mail:
| | - Tommy Harding
- Centre de Recherche, CHU Sainte-Justine, Université de Montréal, Montreal, Québec, Canada
- Département de chimie, biochimie et physique, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Emmanuel Milot
- Département de chimie, biochimie et physique, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada
| | - Hélène Vézina
- Projet BALSAC, Université du Québec à Chicoutimi, Chicoutimi, Québec, Canada
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7
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Nieves-Colón MA. Anthropological genetic insights on Caribbean population history. Evol Anthropol 2022; 31:118-137. [PMID: 35060661 DOI: 10.1002/evan.21935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 06/18/2021] [Accepted: 12/15/2021] [Indexed: 11/09/2022]
Abstract
As the last American region settled by humans, yet the first to experience European colonization, the Caribbean islands have a complex history characterized by continuous migration, admixture, and demographic change. In the last 20 years, genetics research has transformed our understanding of Caribbean population history and revisited major debates in Caribbean anthropology, such as those surrounding the first peopling of the Antilles and the relationship between ancient Indigenous communities and present-day islanders. Genetics studies have also contributed novel perspectives for understanding pivotal events in Caribbean post-contact history such as European colonization, the Atlantic Slave Trade, and the Asian Indenture system. Here, I discuss the last 20 years of Caribbean genetics research and emphasize the importance of integrating genetics with interdisciplinary historic, archaeological, and anthropological approaches. Such interdisciplinary research is essential for investigating the dynamic history of the Caribbean and characterizing its impact on the biocultural diversity of present-day Caribbean peoples.
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Affiliation(s)
- Maria A Nieves-Colón
- Department of Anthropology, University of Minnesota Twin Cities, Minneapolis, Minnesota, USA
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8
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Casals F, Rasal R, Anglada R, Tormo M, Bonet N, Rivas N, Vásquez P, Calafell F. A forensic population database in El Salvador: 58 STRs and 94 SNPs. Forensic Sci Int Genet 2021; 57:102646. [PMID: 34875492 DOI: 10.1016/j.fsigen.2021.102646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 11/26/2021] [Accepted: 11/28/2021] [Indexed: 12/31/2022]
Abstract
We have genotyped the 58 STRs (27 autosomal, 24 Y-STRs and 7 X-STRs) and 94 autosomal SNPs in Illumina ForenSeq™ Primer Mix A in a sample of 248 men and 143 women from El Salvador, Central America. Regional division (Centro, Oriente, Occidente) showed in almost all cases FST values not significantly different from 0, and further analyses were applied only to the undivided, country-wide population. The overall random match probability (RMP) decreased from 6.79 × 10-31 in length-based genotypes in the 27 autosomal STRs to 1.47 × 10-34 in repeat-sequence based genotypes. Combining the autosomal loci in this set, RMP reaches 2.97 × 10-70. In a population genetic analysis, El Salvador showed the lowest FST values with US Hispanics both for autosomal and X-STRs; however, it was much closer to Native Americans for the latter than for the former, in accordance with the well-known gender-biased admixture that created most Latin American populations.
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Affiliation(s)
- Ferran Casals
- Genomics Core Facility, Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Parc de Recerca Biomèdica de Barcelona, 08003 Barcelona, Catalonia, Spain; Departament de Genètica, Microbiologia i Estadísitca, Universitat de Barcelona, Barcelona, Spain
| | - Raquel Rasal
- Genomics Core Facility, Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Parc de Recerca Biomèdica de Barcelona, 08003 Barcelona, Catalonia, Spain
| | - Roger Anglada
- Genomics Core Facility, Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Parc de Recerca Biomèdica de Barcelona, 08003 Barcelona, Catalonia, Spain
| | - Marc Tormo
- Genomics Core Facility, Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Parc de Recerca Biomèdica de Barcelona, 08003 Barcelona, Catalonia, Spain; Scientific IT Core Facility, Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Parc de Recerca Biomèdica de Barcelona, 08003 Barcelona, Catalonia, Spain
| | - Núria Bonet
- Genomics Core Facility, Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Parc de Recerca Biomèdica de Barcelona, 08003 Barcelona, Catalonia, Spain
| | - Nury Rivas
- Instituto de Medicina Legal Dr. Roberto Masferrer, San Salvador, El Salvador
| | - Patricia Vásquez
- Asociación Pro-Búsqueda de Niñas y Niños Desaparecidos de El Salvador, 27 calle Pnte. No.1329 Colonia Layco, San Salvador, El Salvador
| | - Francesc Calafell
- Institute of Evolutionary Biology (UPF-CSIC), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
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9
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Torres JB. A history of you, me, and humanity: mitochondrial DNA in anthropological research. AIMS GENETICS 2021. [DOI: 10.3934/genet.2016.2.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
AbstractWithin genetic anthropology, mitochondrial DNA (mtDNA) has garnered a prominent if not enduring place within the anthropological toolkit. MtDNA has provided new and innovative perspectives on the emergence and dispersal of our species, interactions with extinct human species, and illuminated relationships between human groups. In this paper, I provide a brief overview of the major findings ascertained from mtDNA about human origins, human dispersal across the globe, interactions with other hominin species, and the more recent uses of mtDNA in direct to consumer ancestry tests. Relative to nuclear DNA, mtDNA is a small section of the genome and due to its inheritance pattern provides a limited resolution of population history and an individual's genetic ancestry. Consequently, some scholars dismiss mtDNA as insignificant due to the limited inferences that may be made using the locus. Regardless, mtDNA provides some useful insights to understanding how social, cultural, and environmental factors have shaped patterns of genetic variability. Furthermore, with regard to the experiences of historically marginalized groups, in particular those of African descent throughout the Americas, mtDNA has the potential to fill gaps in knowledge that would otherwise remain unknown. Within anthropological sciences, the value of this locus for understanding human experience is maximized when contextualized with complementary lines of evidence.
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Affiliation(s)
- Jada Benn Torres
- Laboratory of Genetic Anthropology, Department of Anthropology, Vanderbilt University, Nashville, TN 37325, USA
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10
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Llibre-Guerra JJ, Li Y, Allen IE, Llibre-Guerra JC, Rodríguez Salgado AM, Peñalver AI, Sanchez AA, Yokoyama JS, Grinberg L, Valcour V, Miller BL, Llibre-Rodríguez JJ. Race, genetic admixture and cognitive performance in the Cuban population. J Gerontol A Biol Sci Med Sci 2021; 77:331-338. [PMID: 33649769 DOI: 10.1093/gerona/glab063] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Population aging will lead to a dramatic increase in dementia prevalence, which will disproportionally affect racial minorities. The presence of racial differences in dementia prevalence has been widely reported in United States, but there are no relevant studies on this topic in low-middle income countries (LMIC). METHODS In a cross-sectional survey, 2,944 older Cubans were recruited at a community-based level aimed to identify the effects of self-identified race and genetic admixture on cognitive performance. Dementia diagnosis was established using 10/66 Dementia and DSM-IV criteria. APOE-ε4 genotype was determined in 2,511 (85%) and genetic admixture was completed for all dementia cases and in a randomly selected sample of cognitive healthy participants (218 dementia cases and 367 participants without dementia). RESULTS The overall prevalence of dementia was 8.7%, without large or statistically significant differences on dementia prevalence (p=0.12) by self-identified race. Mean cognitive scores were similar across racial groups (p=0.46). After controlling for age, sex and education, greater proportion of African ancestry was not associated with cognitive performance (p=0.17). CONCLUSIONS We found no evidence of an independent effect of self-identified race and/or population ancestry on dementia prevalence or cognitive performance. This suggests that observed differences in dementia prevalence among diverse populations may be driven primarily by social determinants of health.
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Affiliation(s)
- Jorge J Llibre-Guerra
- Department of Neurology. Washington University in St Louis, St Louis, MO, USA.,Global Brain Health Institute, University of California San Francisco, San Francisco, CA, USA
| | - Yan Li
- Department of Neurology. Washington University in St Louis, St Louis, MO, USA
| | - Isabel Elaine Allen
- Department of Epidemiology & Biostatistics, University of California, San Francisco, San Francisco, CA, USA
| | | | - Ana M Rodríguez Salgado
- Global Brain Health Institute, University of California San Francisco, San Francisco, CA, USA
| | - Ana Ibis Peñalver
- Department of Neurology. National Institute of Neurology and Neurosurgery, La Havana, Cuba
| | | | - Jennifer S Yokoyama
- Global Brain Health Institute, University of California San Francisco, San Francisco, CA, USA.,Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
| | - Lea Grinberg
- Global Brain Health Institute, University of California San Francisco, San Francisco, CA, USA.,Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
| | - Victor Valcour
- Global Brain Health Institute, University of California San Francisco, San Francisco, CA, USA.,Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
| | - Bruce L Miller
- Global Brain Health Institute, University of California San Francisco, San Francisco, CA, USA.,Department of Neurology, UCSF Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
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12
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Fernandes DM, Sirak KA, Ringbauer H, Sedig J, Rohland N, Cheronet O, Mah M, Mallick S, Olalde I, Culleton BJ, Adamski N, Bernardos R, Bravo G, Broomandkhoshbacht N, Callan K, Candilio F, Demetz L, Carlson KSD, Eccles L, Freilich S, George RJ, Lawson AM, Mandl K, Marzaioli F, McCool WC, Oppenheimer J, Özdogan KT, Schattke C, Schmidt R, Stewardson K, Terrasi F, Zalzala F, Antúnez CA, Canosa EV, Colten R, Cucina A, Genchi F, Kraan C, La Pastina F, Lucci M, Maggiolo MV, Marcheco-Teruel B, Maria CT, Martínez C, París I, Pateman M, Simms TM, Sivoli CG, Vilar M, Kennett DJ, Keegan WF, Coppa A, Lipson M, Pinhasi R, Reich D. A genetic history of the pre-contact Caribbean. Nature 2021; 590:103-110. [PMID: 33361817 PMCID: PMC7864882 DOI: 10.1038/s41586-020-03053-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 11/10/2020] [Indexed: 12/27/2022]
Abstract
Humans settled the Caribbean about 6,000 years ago, and ceramic use and intensified agriculture mark a shift from the Archaic to the Ceramic Age at around 2,500 years ago1-3. Here we report genome-wide data from 174 ancient individuals from The Bahamas, Haiti and the Dominican Republic (collectively, Hispaniola), Puerto Rico, Curaçao and Venezuela, which we co-analysed with 89 previously published ancient individuals. Stone-tool-using Caribbean people, who first entered the Caribbean during the Archaic Age, derive from a deeply divergent population that is closest to Central and northern South American individuals; contrary to previous work4, we find no support for ancestry contributed by a population related to North American individuals. Archaic-related lineages were >98% replaced by a genetically homogeneous ceramic-using population related to speakers of languages in the Arawak family from northeast South America; these people moved through the Lesser Antilles and into the Greater Antilles at least 1,700 years ago, introducing ancestry that is still present. Ancient Caribbean people avoided close kin unions despite limited mate pools that reflect small effective population sizes, which we estimate to be a minimum of 500-1,500 and a maximum of 1,530-8,150 individuals on the combined islands of Puerto Rico and Hispaniola in the dozens of generations before the individuals who we analysed lived. Census sizes are unlikely to be more than tenfold larger than effective population sizes, so previous pan-Caribbean estimates of hundreds of thousands of people are too large5,6. Confirming a small and interconnected Ceramic Age population7, we detect 19 pairs of cross-island cousins, close relatives buried around 75 km apart in Hispaniola and low genetic differentiation across islands. Genetic continuity across transitions in pottery styles reveals that cultural changes during the Ceramic Age were not driven by migration of genetically differentiated groups from the mainland, but instead reflected interactions within an interconnected Caribbean world1,8.
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Affiliation(s)
- Daniel M Fernandes
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria
- CIAS, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Kendra A Sirak
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Department of Human Evolutionary Biology, Harvard University, Cambridge, MA, USA
| | - Harald Ringbauer
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Department of Human Evolutionary Biology, Harvard University, Cambridge, MA, USA
| | - Jakob Sedig
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Department of Human Evolutionary Biology, Harvard University, Cambridge, MA, USA
| | - Nadin Rohland
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | - Olivia Cheronet
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria
| | - Matthew Mah
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Department of Human Evolutionary Biology, Harvard University, Cambridge, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
- Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Swapan Mallick
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Department of Human Evolutionary Biology, Harvard University, Cambridge, MA, USA
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
- Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Iñigo Olalde
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Institute of Evolutionary Biology, CSIC-Universitat Pompeu Fabra, Barcelona, Spain
| | - Brendan J Culleton
- Institutes of Energy and the Environment, The Pennsylvania State University, University Park, PA, USA
| | - Nicole Adamski
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Rebecca Bernardos
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Guillermo Bravo
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria
- Department of Legal Medicine, Toxicology and Physical Anthropology, University of Granada, Granada, Spain
| | - Nasreen Broomandkhoshbacht
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
- Department of Anthropology, University of California, Santa Cruz, CA, USA
| | - Kimberly Callan
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Francesca Candilio
- Superintendency of Archaeology, Fine Arts and Landscape for the city of Cagliari and the provinces of Oristano and South Sardinia, Cagliari, Italy
| | - Lea Demetz
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria
| | | | - Laurie Eccles
- Department of Anthropology, The Pennsylvania State University, University Park, PA, USA
| | - Suzanne Freilich
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria
| | - Richard J George
- Department of Anthropology, University of California, Santa Barbara, CA, USA
| | - Ann Marie Lawson
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Kirsten Mandl
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria
| | - Fabio Marzaioli
- Department of Mathematics and Physics, Campania University 'Luigi Vanvitelli', Caserta, Italy
| | - Weston C McCool
- Department of Anthropology, University of California, Santa Barbara, CA, USA
| | - Jonas Oppenheimer
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
- Department of Biomolecular Engineering, University of California, Santa Cruz, CA, USA
| | - Kadir T Özdogan
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria
| | - Constanze Schattke
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria
| | - Ryan Schmidt
- CIBIO-InBIO, University of Porto, Vairão, Portugal
| | - Kristin Stewardson
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Filippo Terrasi
- Department of Mathematics and Physics, Campania University 'Luigi Vanvitelli', Caserta, Italy
| | - Fatma Zalzala
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | | | | | - Roger Colten
- Peabody Museum of Natural History, Yale University, New Haven, CT, USA
| | - Andrea Cucina
- Facultad de Ciencias Antropológicas, Universidad Autónoma de Yucatán, Mérida, Mexico
| | - Francesco Genchi
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy
| | - Claudia Kraan
- National Archaeological-Anthropological Memory Management (NAAM), Willemstad, Curaçao
| | | | - Michaela Lucci
- DANTE Laboratory of Diet and Ancient Technology, Sapienza University of Rome, Rome, Italy
| | | | | | | | | | - Ingeborg París
- Instituto de Investigaciones Bioantropológicas y Arqueológicas, Universidad de Los Andes, Mérida, Venezuela
| | - Michael Pateman
- Turks and Caicos National Museum Foundation, Cockburn Town, Turks and Caicos Islands
- AEX Bahamas Maritime Museum, Freeport, Bahamas
| | - Tanya M Simms
- Department of Biology, University of The Bahamas, Nassau, Bahamas
| | - Carlos Garcia Sivoli
- Instituto de Investigaciones Bioantropológicas y Arqueológicas, Universidad de Los Andes, Mérida, Venezuela
| | - Miguel Vilar
- National Geographic Society, Washington, DC, USA
| | - Douglas J Kennett
- Department of Anthropology, University of California, Santa Barbara, CA, USA
| | - William F Keegan
- Florida Museum of Natural History, University of Florida, Gainesville, FL, USA
| | - Alfredo Coppa
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria.
- Department of Genetics, Harvard Medical School, Boston, MA, USA.
- Department of Environmental Biology, Sapienza University of Rome, Rome, Italy.
| | - Mark Lipson
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Department of Human Evolutionary Biology, Harvard University, Cambridge, MA, USA
| | - Ron Pinhasi
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria.
| | - David Reich
- Department of Genetics, Harvard Medical School, Boston, MA, USA.
- Department of Human Evolutionary Biology, Harvard University, Cambridge, MA, USA.
- Broad Institute of Harvard and MIT, Cambridge, MA, USA.
- Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA.
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13
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Nieves-Colón MA, Pestle WJ, Reynolds AW, Llamas B, de la Fuente C, Fowler K, Skerry KM, Crespo-Torres E, Bustamante CD, Stone AC. Ancient DNA Reconstructs the Genetic Legacies of Precontact Puerto Rico Communities. Mol Biol Evol 2020; 37:611-626. [PMID: 31710665 DOI: 10.1093/molbev/msz267] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Indigenous peoples have occupied the island of Puerto Rico since at least 3000 BC. Due to the demographic shifts that occurred after European contact, the origin(s) of these ancient populations, and their genetic relationship to present-day islanders, are unclear. We use ancient DNA to characterize the population history and genetic legacies of precontact Indigenous communities from Puerto Rico. Bone, tooth, and dental calculus samples were collected from 124 individuals from three precontact archaeological sites: Tibes, Punta Candelero, and Paso del Indio. Despite poor DNA preservation, we used target enrichment and high-throughput sequencing to obtain complete mitochondrial genomes (mtDNA) from 45 individuals and autosomal genotypes from two individuals. We found a high proportion of Native American mtDNA haplogroups A2 and C1 in the precontact Puerto Rico sample (40% and 44%, respectively). This distribution, as well as the haplotypes represented, supports a primarily Amazonian South American origin for these populations and mirrors the Native American mtDNA diversity patterns found in present-day islanders. Three mtDNA haplotypes from precontact Puerto Rico persist among Puerto Ricans and other Caribbean islanders, indicating that present-day populations are reservoirs of precontact mtDNA diversity. Lastly, we find similarity in autosomal ancestry patterns between precontact individuals from Puerto Rico and the Bahamas, suggesting a shared component of Indigenous Caribbean ancestry with close affinity to South American populations. Our findings contribute to a more complete reconstruction of precontact Caribbean population history and explore the role of Indigenous peoples in shaping the biocultural diversity of present-day Puerto Ricans and other Caribbean islanders.
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Affiliation(s)
- Maria A Nieves-Colón
- School of Human Evolution and Social Change, Arizona State University, Tempe, AZ.,National Laboratory of Genomics for Biodiversity (UGA-LANGEBIO), CINVESTAV, Irapuato, Guanajuato, Mexico
| | - William J Pestle
- Department of Anthropology, University of Miami, Coral Gables, FL
| | | | - Bastien Llamas
- Australian Centre for Ancient DNA, School of Biological Sciences and Environment Institute, The University of Adelaide, Adelaide, SA, Australia
| | | | - Kathleen Fowler
- School of Human Evolution and Social Change, Arizona State University, Tempe, AZ
| | - Katherine M Skerry
- School of Human Evolution and Social Change, Arizona State University, Tempe, AZ.,School of Life Sciences, Arizona State University, Tempe, AZ
| | - Edwin Crespo-Torres
- Forensic Anthropology and Bioarcheology Laboratory, University of Puerto Rico, Rio Piedras, Puerto Rico
| | | | - Anne C Stone
- School of Human Evolution and Social Change, Arizona State University, Tempe, AZ
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14
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García-Fernández C, Font-Porterias N, Kučinskas V, Sukarova-Stefanovska E, Pamjav H, Makukh H, Dobon B, Bertranpetit J, Netea MG, Calafell F, Comas D. Sex-biased patterns shaped the genetic history of Roma. Sci Rep 2020; 10:14464. [PMID: 32879340 PMCID: PMC7468237 DOI: 10.1038/s41598-020-71066-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 08/07/2020] [Indexed: 12/30/2022] Open
Abstract
The Roma population is a European ethnic minority characterized by recent and multiple dispersals and founder effects. After their origin in South Asia around 1,500 years ago, they migrated West. In Europe, they diverged into ethnolinguistically distinct migrant groups that spread across the continent. Previous genetic studies based on genome-wide data and uniparental markers detected Roma founder events and West-Eurasian gene flow. However, to the best of our knowledge, it has not been assessed whether these demographic processes have equally affected both sexes in the population. The present study uses the largest and most comprehensive dataset of complete mitochondrial and Y chromosome Roma sequences to unravel the sex-biased patterns that have shaped their genetic history. The results show that the Roma maternal genetic pool carries a higher lineage diversity from South Asia, as opposed to a single paternal South Asian lineage. Nonetheless, the European gene flow events mainly occurred through the maternal lineages; however, a signal of this gene flow is also traceable in the paternal lineages. We also detect a higher female migration rate among European Roma groups. Altogether, these results suggest that sociocultural factors influenced the emergence of sex-biased genetic patterns at global and local scales in the Roma population through time.
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Affiliation(s)
- C García-Fernández
- Institute of Evolutionary Biology (UPF-CSIC), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - N Font-Porterias
- Institute of Evolutionary Biology (UPF-CSIC), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - V Kučinskas
- Department of Human and Medical Genetics, Faculty of Medicine, Biomedical Science Institute, Vilnius University, Vilnius, Lithuania
| | - E Sukarova-Stefanovska
- Research Center for Genetic Engineering and Biotechnology "Georgi D. Efremov", Academy of Sciences and Arts of the Republic of North Macedonia - MASA, Skopje, Republic of North Macedonia
| | - H Pamjav
- Institute of Forensic Genetics, Hungarian Institute for Forensic Sciences, Budapest, Hungary
| | - H Makukh
- Institute of Hereditary Pathology, Ukrainian Academy of Medical Sciences, Lviv, Ukraine
| | - B Dobon
- Institute of Evolutionary Biology (UPF-CSIC), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - J Bertranpetit
- Institute of Evolutionary Biology (UPF-CSIC), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - M G Netea
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, 6525 GA, Nijmegen, the Netherlands.,Department of Human Genetics, University of Medicine and Pharmacy Craiova, Craiova, Romania.,Department for Genomics and Immunoregulation, Life and Medical Sciences Institute (LIMES), University of Bonn, 53115, Bonn, Germany
| | - F Calafell
- Institute of Evolutionary Biology (UPF-CSIC), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain.
| | - D Comas
- Institute of Evolutionary Biology (UPF-CSIC), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain.
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15
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D’Atanasio E, Trionfetti F, Bonito M, Sellitto D, Coppa A, Berti A, Trombetta B, Cruciani F. Y Haplogroup Diversity of the Dominican Republic: Reconstructing the Effect of the European Colonization and the Trans-Atlantic Slave Trades. Genome Biol Evol 2020; 12:1579-1590. [PMID: 32835369 PMCID: PMC7523727 DOI: 10.1093/gbe/evaa176] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/15/2020] [Indexed: 12/12/2022] Open
Abstract
The Dominican Republic is one of the two countries on the Hispaniola island, which is part of the Antilles. Hispaniola was affected by the European colonization and massive deportation of African slaves since the XVI century and these events heavily shaped the genetic composition of the present-day population. To shed light about the effect of the European rules, we analyzed 92 single nucleotide polymorphisms on the Y chromosome in 182 Dominican individuals from three different locations. The Dominican Y haplogroup composition was characterized by an excess of northern African/European lineages (59%), followed by the African clades (38%), whereas the Native-American lineages were rare (3%). The comparison with the mitochondrial DNA variability, dominated by African clades, revealed a sex-biased admixture pattern, in line with the colonial society dominated by European men. When other Caribbean and non-Caribbean former colonies were also considered, we noted a difference between territories under a Spanish rule (like the Dominican Republic) and British/French rule, with the former characterized by an excess of European Y lineages reflecting the more permissive Iberian legislation about mixed people and slavery. Finally, we analyzed the distribution in Africa of the Dominican lineages with a putative African origin, mainly focusing on central and western Africa, which were the main sources of African slaves. We found that most (83%) of the African lineages observed in Santo Domingo have a central African ancestry, suggesting that most of the slaves were deported from regions.
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Affiliation(s)
- Eugenia D’Atanasio
- Istituto di Biologia e Patologia Molecolari, CNR, Roma, Italy
- Dipartimento di Biologia e Biotecnologie “Charles Darwin”, Sapienza Università di Roma, Rome, Italy
| | - Flavia Trionfetti
- Dipartimento di Biologia e Biotecnologie “Charles Darwin”, Sapienza Università di Roma, Rome, Italy
| | - Maria Bonito
- Dipartimento di Biologia e Biotecnologie “Charles Darwin”, Sapienza Università di Roma, Rome, Italy
| | | | - Alfredo Coppa
- Dipartimento di Biologia Ambientale, Sapienza Università di Roma, Rome, Italy
- Department of Genetics, Harvard Medical School, Boston, Massachusetts
- Department of Evolutionary Anthropology, University of Vienna, Vienna, Austria
| | - Andrea Berti
- Reparto CC Investigazioni Scientifiche di Roma, Sezione di Biologia, Rome, Italy
| | - Beniamino Trombetta
- Dipartimento di Biologia e Biotecnologie “Charles Darwin”, Sapienza Università di Roma, Rome, Italy
| | - Fulvio Cruciani
- Istituto di Biologia e Patologia Molecolari, CNR, Roma, Italy
- Dipartimento di Biologia e Biotecnologie “Charles Darwin”, Sapienza Università di Roma, Rome, Italy
- Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza Università di Roma, Rome, Italy
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16
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Bussies PL, Rajabli F, Griswold A, Dorfsman DA, Whitehead P, Adams LD, Mena PR, Cuccaro M, Haines JL, Byrd GS, Beecham GW, Pericak-Vance MA, Young JI, Vance JM. Use of local genetic ancestry to assess TOMM40-523' and risk for Alzheimer disease. Neurol Genet 2020; 6:e404. [PMID: 32337333 PMCID: PMC7164968 DOI: 10.1212/nxg.0000000000000404] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 01/14/2020] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Here, we re-examine TOMM40-523' as a race/ethnicity-specific risk modifier for late-onset Alzheimer disease (LOAD) with adjustment for local genomic ancestry (LGA) in Apolipoprotein E (APOE) ε4 haplotypes. METHODS The TOMM40-523' size was determined by fragment analysis and whole genome sequencing in homozygous APOE ε3 and APOE ε4 haplotypes of African (AF) or European (EUR) ancestry. The risk for LOAD was assessed within groups by allele size. RESULTS The TOMM40-523' length did not modify risk for LOAD in APOE ε4 haplotypes with EUR or AF LGA. Increasing length of TOMM40-523' was associated with a significantly reduced risk for LOAD in EUR APOE ε3 haplotypes. CONCLUSIONS Adjustment for LGA confirms that TOMM40-523' cannot explain the strong differential risk for LOAD between APOE ε4 with EUR and AF LGA. Our study does confirm previous reports that increasing allele length of the TOMM40-523' repeat is associated with decreased risk for LOAD in carriers of homozygous APOE ε3 alleles and demonstrates that this effect is occurring in those individuals with the EUR LGA APOE ε3 allele haplotype.
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Affiliation(s)
- Parker L Bussies
- John P. Hussman Institute for Human Genomics (P.L.B., F.R., A.G., D.A.D., P.W., L.D.A., P.R.M., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Dr. John T. MacDonald Foundation Department of Human Genetics (A.G., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Department of Population and Quantitative Health Sciences (J.L.H.), Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, OH; and Wake Forest School of Medicine (G.S.B.), Bowman Gray Center for Medical Education, Winston-Salem, NC
| | - Farid Rajabli
- John P. Hussman Institute for Human Genomics (P.L.B., F.R., A.G., D.A.D., P.W., L.D.A., P.R.M., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Dr. John T. MacDonald Foundation Department of Human Genetics (A.G., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Department of Population and Quantitative Health Sciences (J.L.H.), Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, OH; and Wake Forest School of Medicine (G.S.B.), Bowman Gray Center for Medical Education, Winston-Salem, NC
| | - Anthony Griswold
- John P. Hussman Institute for Human Genomics (P.L.B., F.R., A.G., D.A.D., P.W., L.D.A., P.R.M., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Dr. John T. MacDonald Foundation Department of Human Genetics (A.G., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Department of Population and Quantitative Health Sciences (J.L.H.), Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, OH; and Wake Forest School of Medicine (G.S.B.), Bowman Gray Center for Medical Education, Winston-Salem, NC
| | - Daniel A Dorfsman
- John P. Hussman Institute for Human Genomics (P.L.B., F.R., A.G., D.A.D., P.W., L.D.A., P.R.M., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Dr. John T. MacDonald Foundation Department of Human Genetics (A.G., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Department of Population and Quantitative Health Sciences (J.L.H.), Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, OH; and Wake Forest School of Medicine (G.S.B.), Bowman Gray Center for Medical Education, Winston-Salem, NC
| | - Patrice Whitehead
- John P. Hussman Institute for Human Genomics (P.L.B., F.R., A.G., D.A.D., P.W., L.D.A., P.R.M., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Dr. John T. MacDonald Foundation Department of Human Genetics (A.G., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Department of Population and Quantitative Health Sciences (J.L.H.), Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, OH; and Wake Forest School of Medicine (G.S.B.), Bowman Gray Center for Medical Education, Winston-Salem, NC
| | - Larry D Adams
- John P. Hussman Institute for Human Genomics (P.L.B., F.R., A.G., D.A.D., P.W., L.D.A., P.R.M., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Dr. John T. MacDonald Foundation Department of Human Genetics (A.G., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Department of Population and Quantitative Health Sciences (J.L.H.), Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, OH; and Wake Forest School of Medicine (G.S.B.), Bowman Gray Center for Medical Education, Winston-Salem, NC
| | - Pedro R Mena
- John P. Hussman Institute for Human Genomics (P.L.B., F.R., A.G., D.A.D., P.W., L.D.A., P.R.M., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Dr. John T. MacDonald Foundation Department of Human Genetics (A.G., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Department of Population and Quantitative Health Sciences (J.L.H.), Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, OH; and Wake Forest School of Medicine (G.S.B.), Bowman Gray Center for Medical Education, Winston-Salem, NC
| | - Michael Cuccaro
- John P. Hussman Institute for Human Genomics (P.L.B., F.R., A.G., D.A.D., P.W., L.D.A., P.R.M., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Dr. John T. MacDonald Foundation Department of Human Genetics (A.G., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Department of Population and Quantitative Health Sciences (J.L.H.), Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, OH; and Wake Forest School of Medicine (G.S.B.), Bowman Gray Center for Medical Education, Winston-Salem, NC
| | - Jonathan L Haines
- John P. Hussman Institute for Human Genomics (P.L.B., F.R., A.G., D.A.D., P.W., L.D.A., P.R.M., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Dr. John T. MacDonald Foundation Department of Human Genetics (A.G., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Department of Population and Quantitative Health Sciences (J.L.H.), Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, OH; and Wake Forest School of Medicine (G.S.B.), Bowman Gray Center for Medical Education, Winston-Salem, NC
| | - Goldie S Byrd
- John P. Hussman Institute for Human Genomics (P.L.B., F.R., A.G., D.A.D., P.W., L.D.A., P.R.M., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Dr. John T. MacDonald Foundation Department of Human Genetics (A.G., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Department of Population and Quantitative Health Sciences (J.L.H.), Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, OH; and Wake Forest School of Medicine (G.S.B.), Bowman Gray Center for Medical Education, Winston-Salem, NC
| | - Gary W Beecham
- John P. Hussman Institute for Human Genomics (P.L.B., F.R., A.G., D.A.D., P.W., L.D.A., P.R.M., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Dr. John T. MacDonald Foundation Department of Human Genetics (A.G., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Department of Population and Quantitative Health Sciences (J.L.H.), Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, OH; and Wake Forest School of Medicine (G.S.B.), Bowman Gray Center for Medical Education, Winston-Salem, NC
| | - Margaret A Pericak-Vance
- John P. Hussman Institute for Human Genomics (P.L.B., F.R., A.G., D.A.D., P.W., L.D.A., P.R.M., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Dr. John T. MacDonald Foundation Department of Human Genetics (A.G., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Department of Population and Quantitative Health Sciences (J.L.H.), Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, OH; and Wake Forest School of Medicine (G.S.B.), Bowman Gray Center for Medical Education, Winston-Salem, NC
| | - Juan I Young
- John P. Hussman Institute for Human Genomics (P.L.B., F.R., A.G., D.A.D., P.W., L.D.A., P.R.M., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Dr. John T. MacDonald Foundation Department of Human Genetics (A.G., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Department of Population and Quantitative Health Sciences (J.L.H.), Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, OH; and Wake Forest School of Medicine (G.S.B.), Bowman Gray Center for Medical Education, Winston-Salem, NC
| | - Jeffery M Vance
- John P. Hussman Institute for Human Genomics (P.L.B., F.R., A.G., D.A.D., P.W., L.D.A., P.R.M., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Dr. John T. MacDonald Foundation Department of Human Genetics (A.G., M.C., G.W.B., M.A.P.-V., J.I.Y., J.M.V.), Miller School of Medicine, University of Miami; Department of Population and Quantitative Health Sciences (J.L.H.), Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, OH; and Wake Forest School of Medicine (G.S.B.), Bowman Gray Center for Medical Education, Winston-Salem, NC
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17
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Mendisco F, Pemonge MH, Romon T, Lafleur G, Richard G, Courtaud P, Deguilloux MF. Tracing the genetic legacy in the French Caribbean islands: A study of mitochondrial and Y-chromosome lineages in the Guadeloupe archipelago. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2019; 170:507-518. [PMID: 31599974 DOI: 10.1002/ajpa.23931] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 08/22/2019] [Accepted: 09/11/2019] [Indexed: 12/11/2022]
Abstract
OBJECTIVES The history of the Caribbean region is marked by numerous and various successive migration waves that resulted in a global blending of African, European, and Amerindian lineages. As the origin and genetic composition of the current population of French Caribbean islands has not been studied to date, we used both mitochondrial DNA and Y-chromosome markers to complete the characterization of the dynamics of admixture in the Guadeloupe archipelago. MATERIALS AND METHODS We sequenced the mitochondrial hypervariable regions and genotyped mitochondrial and Y-chromosomal single nucleotide polymorphisms (SNPs) of 198 individuals from five localities of the Guadeloupe archipelago. RESULTS The maternal haplogroups revealed a blend of 85% African lineages (mainly traced to Western, West-Central, and South-Eastern Africa), 12.5% Eurasian lineages, and 0.5% Amerindian lineages. We highlighted disequilibria between European paternal contribution (44%) and European maternal contribution (7%), pointing out an important sexual asymmetry. Finally, the estimated Native American component was strikingly low and supported the near-extinction of native lineages in the region. DISCUSSION We confirmed that all historically known migratory events indeed left a visible genetic imprint in the contemporary Caribbean populations. The data gathered clearly demonstrated the significant impact of the transatlantic slave trade on the Guadeloupean population's constitution. Altogether, the data in our study confirm that in the Caribbean region, human population variation is correlated with colonial and postcolonial policies and unique island histories.
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Affiliation(s)
- Fanny Mendisco
- University of Bordeaux, UMR 5199 PACEA, Allée Geoffroy de St Hilaire, Pessac, France
| | - Marie-Hélène Pemonge
- University of Bordeaux, UMR 5199 PACEA, Allée Geoffroy de St Hilaire, Pessac, France
| | - Thomas Romon
- University of Bordeaux, UMR 5199 PACEA, Allée Geoffroy de St Hilaire, Pessac, France.,Centre de Gourbeyre, Institut National de Recherches Archéologiques Préventives Guadeloupe, Gourbeyre, France
| | - Gérard Lafleur
- Archives Départementales de la Guadeloupe, Société D'histoire de la Guadeloupe, Basse-Terre, France
| | - Gérard Richard
- Centre de Gourbeyre, Institut National de Recherches Archéologiques Préventives Guadeloupe, Gourbeyre, France
| | - Patrice Courtaud
- University of Bordeaux, UMR 5199 PACEA, Allée Geoffroy de St Hilaire, Pessac, France
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18
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Fleskes RE, Bruwelheide KS, West FL, Owsley DW, Griffith DR, Barca KG, Cabana GS, Schurr TG. Ancient DNA and bioarchaeological perspectives on European and African diversity and relationships on the colonial Delaware frontier. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2019; 170:232-245. [PMID: 31270812 DOI: 10.1002/ajpa.23887] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 06/07/2019] [Accepted: 06/13/2019] [Indexed: 07/13/2024]
Abstract
OBJECTIVES Ancient DNA (aDNA) and standard osteological analyses applied to 11 skeletons at a late 17th to early 18th century farmstead site in Delaware to investigate the biological and social factors of settlement and slavery in colonial America. MATERIALS AND METHODS Osteological analysis and mitochondrial DNA (mtDNA) sequencing were conducted for all individuals and the resulting data contextualized with archaeological and documentary evidence. RESULTS Individuals of European and African descent were spatially separated in this colonial cemetery. The skeletal remains exhibited differences in osteological features and maternal genetic ancestry. A specific mtDNA haplotype appeared in a subset of the European-descended individuals suggesting they were maternally related. Individuals of African descent were not maternally related, and instead showed a diversity of haplotypes affiliated with present-day Western, Central, and Eastern regions of Africa. DISCUSSION Along with the bioarchaeological and documentary evidence, the aDNA findings contribute to our understanding of life on the colonial Delaware frontier. Evidence of maternal relatedness among European-descended individuals at the site demonstrates kin-based settlements in 17th century Delaware and provides preliminary identifications of individuals. The maternal genetic diversity of the individuals with African descent aligns with the routes of the trans-Atlantic slave trade but broadens our understanding of the ancestries of persons involved in it. Burial positioning, osteological pathology, and lack of maternal kinship among individuals of African descent provide tangible evidence for the emergence of racialized labor and society in Delaware during the late 17th century.
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Affiliation(s)
- Raquel E Fleskes
- Department of Anthropology, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Karin S Bruwelheide
- Department of Anthropology, Smithsonian Institution, National Museum of Natural History, Washington, D.C
| | - Frankie L West
- Department of Anthropology, University of Tennessee, Knoxville, Tennessee
| | - Douglas W Owsley
- Department of Anthropology, Smithsonian Institution, National Museum of Natural History, Washington, D.C
| | | | - Kathryn G Barca
- Department of Anthropology, Smithsonian Institution, National Museum of Natural History, Washington, D.C
| | - Graciela S Cabana
- Department of Anthropology, University of Tennessee, Knoxville, Tennessee
| | - Theodore G Schurr
- Department of Anthropology, University of Pennsylvania, Philadelphia, Pennsylvania
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19
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Alfonso‐Sánchez MA, Gómez‐Pérez L, Dipierri JE, Peña JA. Paternal heritage in Jujuy province (Northwest Argentina): Evidence for sex‐biased gene flow and genetic drift effects. Am J Hum Biol 2019; 31:e23262. [DOI: 10.1002/ajhb.23262] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 02/27/2019] [Accepted: 05/17/2019] [Indexed: 12/30/2022] Open
Affiliation(s)
- Miguel A. Alfonso‐Sánchez
- Departamento de Genética, Antropología Física y Fisiología Animal, Facultad de Ciencia y TecnologíaUniversidad del País Vasco (UPV/EHU) Bilbao Spain
| | - Luis Gómez‐Pérez
- Departamento de Genética, Antropología Física y Fisiología Animal, Facultad de Ciencia y TecnologíaUniversidad del País Vasco (UPV/EHU) Bilbao Spain
| | - José E. Dipierri
- Instituto de Biología de la AlturaUniversidad Nacional de Jujuy San Salvador de Jujuy Argentina
| | - José A. Peña
- Departamento de Genética, Antropología Física y Fisiología Animal, Facultad de Ciencia y TecnologíaUniversidad del País Vasco (UPV/EHU) Bilbao Spain
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20
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Torres D, Lorenzo Bermejo J, Garcia Mesa K, Gilbert M, Briceño I, Pohl-Zeidler S, González Silos R, Boekstegers F, Plass C, Hamann U. Interaction between genetic ancestry and common breast cancer susceptibility variants in Colombian women. Int J Cancer 2019; 144:2181-2191. [PMID: 30485434 DOI: 10.1002/ijc.32023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 11/05/2018] [Indexed: 01/31/2023]
Abstract
Latino women show lower incidences of breast cancer (BC) than non-Hispanic whites. Large-scale genetic association studies have identified variants robustly associated with BC risk in European women. We examine here the relevance of these variants to Colombian BC and possible interactions with genetic ancestry. Native American, European and African proportions were estimated for 1022 Colombian BC cases and 1023 controls. Logistic regression was applied to assess the association between 78 variants and BC risk and interactions between the variants and ancestry proportions. We constructed a multifactorial risk score combining established BC risk factors, associated risk variants and individual ancestry proportions. Each 1% increase in the Native American proportion translated into a 2.2% lower BC risk (95% CI: 1.4-2.9). Thirteen variants were associated with BC in Colombian women, with allele frequencies and risk effects partially different from European women. Ancestry proportions moderated the risk effects of two variants. The ability of Native American proportions to separate Colombian cases and controls (area-under-the-curve (AUC) = 0.61) was similar to the discriminative ability of family history of BC in first-degree female relatives (AUC = 0.58) or the combined effect of all 13 associated risk variants (AUC = 0.57). Our findings demonstrate ample potential for individualized BC prevention in Hispanic women taking advantage of individual Native American proportions, information on established susceptibility factors and recently identified common risk variants.
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Affiliation(s)
- Diana Torres
- Molecular Genetics of Breast Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Institute of Human Genetics, Pontificia Universidad Javeriana, Bogota, Colombia
| | - Justo Lorenzo Bermejo
- Institute of Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany
| | - Karen Garcia Mesa
- Molecular Genetics of Breast Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Institute of Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany
| | - Michael Gilbert
- Molecular Genetics of Breast Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ignacio Briceño
- Institute of Human Genetics, Pontificia Universidad Javeriana, Bogota, Colombia.,Universidad de la Sabana, Bogota, Colombia
| | - Svenja Pohl-Zeidler
- Molecular Genetics of Breast Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Rosa González Silos
- Institute of Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany
| | - Felix Boekstegers
- Institute of Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany
| | - Christoph Plass
- Division of Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Ute Hamann
- Molecular Genetics of Breast Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
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21
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Fortes-Lima C, Bybjerg-Grauholm J, Marin-Padrón LC, Gomez-Cabezas EJ, Bækvad-Hansen M, Hansen CS, Le P, Hougaard DM, Verdu P, Mors O, Parra EJ, Marcheco-Teruel B. Exploring Cuba's population structure and demographic history using genome-wide data. Sci Rep 2018; 8:11422. [PMID: 30061702 PMCID: PMC6065444 DOI: 10.1038/s41598-018-29851-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 07/10/2018] [Indexed: 12/31/2022] Open
Abstract
Cuba is the most populated country in the Caribbean and has a rich and heterogeneous genetic heritage. Here, we take advantage of dense genomic data from 860 Cuban individuals to reconstruct the genetic structure and ancestral origins of this population. We found distinct admixture patterns between and within the Cuban provinces. Eastern provinces have higher African and Native American ancestry contributions (average 26% and 10%, respectively) than the rest of the Cuban provinces (average 17% and 5%, respectively). Furthermore, in the Eastern Cuban region, we identified more intense sex-specific admixture patterns, strongly biased towards European male and African/Native American female ancestries. Our subcontinental ancestry analyses in Cuba highlight the Iberian population as the best proxy European source population, South American and Mesoamerican populations as the closest Native American ancestral component, and populations from West Central and Central Africa as the best proxy sources of the African ancestral component. Finally, we found complex admixture processes involving two migration pulses from both Native American and African sources. Most of the inferred Native American admixture events happened early during the Cuban colonial period, whereas the African admixture took place during the slave trade and more recently as a probable result of large-scale migrations from Haiti.
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Affiliation(s)
- Cesar Fortes-Lima
- UMR7206 Eco-Anthropology and Ethno-Biology, CNRS-MNHN-University Paris Diderot, Musée de l'Homme, Paris, 75016, France
| | - Jonas Bybjerg-Grauholm
- Department for Congenital Disorders, Statens Serum Institut, Copenhagen, 2300, Denmark.,The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Aarhus University, Aarhus, 8000, Denmark
| | | | | | - Marie Bækvad-Hansen
- Department for Congenital Disorders, Statens Serum Institut, Copenhagen, 2300, Denmark.,The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Aarhus University, Aarhus, 8000, Denmark
| | - Christine Søholm Hansen
- Department for Congenital Disorders, Statens Serum Institut, Copenhagen, 2300, Denmark.,The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Aarhus University, Aarhus, 8000, Denmark
| | - Phuong Le
- Department of Anthropology, University of Toronto, Mississauga, ON L5L 1C6, Canada
| | - David Michael Hougaard
- Department for Congenital Disorders, Statens Serum Institut, Copenhagen, 2300, Denmark.,The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Aarhus University, Aarhus, 8000, Denmark
| | - Paul Verdu
- UMR7206 Eco-Anthropology and Ethno-Biology, CNRS-MNHN-University Paris Diderot, Musée de l'Homme, Paris, 75016, France
| | - Ole Mors
- The Lundbeck Foundation Initiative for Integrative Psychiatric Research, iPSYCH, Aarhus University, Aarhus, 8000, Denmark.,Psychosis Research Unit, Aarhus University Hospital, Risskov, Aarhus, 8240, Denmark
| | - Esteban J Parra
- Department of Anthropology, University of Toronto, Mississauga, ON L5L 1C6, Canada.
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22
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Gómez-Carballa A, Pardo-Seco J, Brandini S, Achilli A, Perego UA, Coble MD, Diegoli TM, Álvarez-Iglesias V, Martinón-Torres F, Olivieri A, Torroni A, Salas A. The peopling of South America and the trans-Andean gene flow of the first settlers. Genome Res 2018; 28:767-779. [PMID: 29735605 PMCID: PMC5991523 DOI: 10.1101/gr.234674.118] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 04/27/2018] [Indexed: 11/25/2022]
Abstract
Genetic and archaeological data indicate that the initial Paleoindian settlers of South America followed two entry routes separated by the Andes and the Amazon rainforest. The interactions between these paths and their impact on the peopling of South America remain unclear. Analysis of genetic variation in the Peruvian Andes and regions located south of the Amazon River might provide clues on this issue. We analyzed mitochondrial DNA variation at different Andean locations and >360,000 autosomal SNPs from 28 Native American ethnic groups to evaluate different trans-Andean demographic scenarios. Our data reveal that the Peruvian Altiplano was an important enclave for early Paleoindian expansions and point to a genetic continuity in the Andes until recent times, which was only marginally affected by gene flow from the Amazonian lowlands. Genomic variation shows a good fit with the archaeological evidence, indicating that the genetic interactions between the descendants of the settlers that followed the Pacific and Atlantic routes were extremely limited.
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Affiliation(s)
- Alberto Gómez-Carballa
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, Instituto de Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, 15782 Galicia, Spain.,GenPoB Research Group, Instituto de Investigaciones Sanitarias (IDIS), Hospital Clínico Universitario de Santiago, Santiago de Compostela, 15706 Galicia, Spain.,Grupo de Investigación en Genética, Vacunas, Infecciones y Pediatría (GENVIP), Hospital Clínico Universitario and Universidade de Santiago de Compostela, 15706 Galicia, Spain
| | - Jacobo Pardo-Seco
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, Instituto de Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, 15782 Galicia, Spain.,GenPoB Research Group, Instituto de Investigaciones Sanitarias (IDIS), Hospital Clínico Universitario de Santiago, Santiago de Compostela, 15706 Galicia, Spain.,Grupo de Investigación en Genética, Vacunas, Infecciones y Pediatría (GENVIP), Hospital Clínico Universitario and Universidade de Santiago de Compostela, 15706 Galicia, Spain
| | - Stefania Brandini
- Dipartimento di Biologia e Biotecnologie, Università di Pavia, 27110 Pavia, Italy
| | - Alessandro Achilli
- Dipartimento di Biologia e Biotecnologie, Università di Pavia, 27110 Pavia, Italy
| | - Ugo A Perego
- Dipartimento di Biologia e Biotecnologie, Università di Pavia, 27110 Pavia, Italy
| | - Michael D Coble
- Applied Genetics Group, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - Toni M Diegoli
- Office of the Chief Scientist, Defense Forensic Science Center, Ft. Gillem, Georgia 30297, USA.,Analytical Services, Incorporated, Arlington, Virginia 22201, USA
| | - Vanesa Álvarez-Iglesias
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, Instituto de Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, 15782 Galicia, Spain.,GenPoB Research Group, Instituto de Investigaciones Sanitarias (IDIS), Hospital Clínico Universitario de Santiago, Santiago de Compostela, 15706 Galicia, Spain
| | - Federico Martinón-Torres
- Grupo de Investigación en Genética, Vacunas, Infecciones y Pediatría (GENVIP), Hospital Clínico Universitario and Universidade de Santiago de Compostela, 15706 Galicia, Spain
| | - Anna Olivieri
- Dipartimento di Biologia e Biotecnologie, Università di Pavia, 27110 Pavia, Italy
| | - Antonio Torroni
- Dipartimento di Biologia e Biotecnologie, Università di Pavia, 27110 Pavia, Italy
| | - Antonio Salas
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, Instituto de Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, 15782 Galicia, Spain.,GenPoB Research Group, Instituto de Investigaciones Sanitarias (IDIS), Hospital Clínico Universitario de Santiago, Santiago de Compostela, 15706 Galicia, Spain
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23
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Santana-Porbén S, González-Marrero A, Valdivieso-Valdivieso JP, Álvarez-Porbén S. Reference values for spirometric variables for allegedly healthy workers. REVISTA DE LA FACULTAD DE MEDICINA 2018. [DOI: 10.15446/revfacmed.v66n2.63571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Introducción. La espirometría permite identificar de forma precoz el deterioro pulmonar en trabajadores expuestos a contaminantes laborales. No se tienen valores de referencia (VR) para variables espirométricas (VE) en trabajadores cubanos (TC).Objetivo. Obtener VR para VE en TC supuestamente sanos.Materiales y métodos. Estudio retrospectivo-analítico. Se obtuvo la capacidad vital forzada (CVF), el volumen espiratorio forzado en el primer segundo (VEF1), el cociente VEF1/CVF y la fracción de la espiración forzada al 25-75% de la CVF (FEF25-75) de 1 086 TC supuestamente sanos, no fumadores, de ambos sexos, con edades entre 20 y 65 años y atendidos en el Instituto Nacional de la Salud de los Trabajadores de La Habana, Cuba, entre 2009 y 2015. Los VR se obtuvieron para cada sexo de las funciones de regresión Y=α+β x Edad+χ x Talla+ε (Y=CVF, VEF1, VEF1/CVF, FEF25-75).Resultados. Edades avanzadas se asociaron con CVF y VEF1 disminuidos; la talla elevada se asoció con mayores CVF y VEF1; una FR construida se asoció con la edad, y la talla implicó un coeficiente r2 de determinación superior y un error menor. El comportamiento de la VE predicho con la ecuación desarrollada fue menos sesgado que el observado con otras importadas.Conclusiones. Los VR construidos localmente pueden ser más efectivos en el diagnóstico de las afecciones pulmonares de los TC.
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24
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Abstract
The Caribbean was one of the last parts of the Americas to be settled by humans, but how and when the islands were first occupied remains a matter of debate. Ancient DNA can help answering these questions, but the work has been hampered by poor DNA preservation. We report the genome sequence of a 1,000-year-old Lucayan Taino individual recovered from the site of Preacher's Cave in the Bahamas. We sequenced her genome to 12.4-fold coverage and show that she is genetically most closely related to present-day Arawakan speakers from northern South America, suggesting that the ancestors of the Lucayans originated there. Further, we find no evidence for recent inbreeding or isolation in the ancient genome, suggesting that the Lucayans had a relatively large effective population size. Finally, we show that the native American components in some present-day Caribbean genomes are closely related to the ancient Taino, demonstrating an element of continuity between precontact populations and present-day Latino populations in the Caribbean.
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25
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Hellwege J, Keaton J, Giri A, Gao X, Velez Edwards DR, Edwards TL. Population Stratification in Genetic Association Studies. CURRENT PROTOCOLS IN HUMAN GENETICS 2017; 95:1.22.1-1.22.23. [PMID: 29044472 PMCID: PMC6007879 DOI: 10.1002/cphg.48] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Population stratification (PS) is a primary consideration in studies of genetic determinants of human traits. Failure to control for PS may lead to confounding, causing a study to fail for lack of significant results, or resources to be wasted following false-positive signals. Here, historical and current approaches for addressing PS when performing genetic association studies in human populations are reviewed. Methods for detecting the presence of PS, including global and local ancestry methods, are described. Also described are approaches for accounting for PS when calculating association statistics, such that measures of association are not confounded. Many traits are being examined for the first time in minority populations, which may inherently feature PS. © 2017 by John Wiley & Sons, Inc.
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Affiliation(s)
- Jacklyn Hellwege
- Vanderbilt Genetics Institute, Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center,
Nashville, TN 37203, USA
| | - Jacob Keaton
- Vanderbilt Genetics Institute, Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center,
Nashville, TN 37203, USA
| | - Ayush Giri
- Vanderbilt Genetics Institute, Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center,
Nashville, TN 37203, USA
| | - Xiaoyi Gao
- Department of Ophthalmology and Preventive Medicine, Keck School of Medicine, University of Southern California, Los
Angeles, CA 90033, USA
| | - Digna R. Velez Edwards
- Vanderbilt Genetics Institute, Department of Obstetrics and Gynecology, Vanderbilt University Medical Center,
Nashville, TN 37203, USA
| | - Todd L. Edwards
- Vanderbilt Genetics Institute, Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center,
Nashville, TN 37203, USA
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26
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Taino and African maternal heritage in the Greater Antilles. Gene 2017; 637:33-40. [PMID: 28912065 DOI: 10.1016/j.gene.2017.09.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 08/22/2017] [Accepted: 09/04/2017] [Indexed: 01/08/2023]
Abstract
Notwithstanding the general interest and the geopolitical importance of the island countries in the Greater Antilles, little is known about the specific ancestral Native American and African populations that settled them. In an effort to alleviate this lacuna of information on the genetic constituents of the Greater Antilles, we comprehensively compared the mtDNA compositions of Cuba, Dominican Republic, Haiti, Jamaica and Puerto Rico. To accomplish this, the mtDNA HVRI and HVRII regions, as well as coding diagnostic sites, were assessed in the Haitian general population and compared to data from reference populations. The Taino maternal DNA is prominent in the ex-Spanish colonies (61.3%-22.0%) while it is basically non-existent in the ex-French and ex-English colonies of Haiti (0.0%) and Jamaica (0.5%), respectively. The most abundant Native American mtDNA haplogroups in the Greater Antilles are A2, B2 and C1. The African mtDNA component is almost fixed in Haiti (98.2%) and Jamaica (98.5%), and the frequencies of specific African haplogroups vary considerably among the five island nations. The strong persistence of Taino mtDNA in the ex-Spanish colonies (and especially in Puerto Rico), and its absence in the French and English excolonies is likely the result of different social norms regarding mixed marriages with Taino women during the early years after the first contact with Europeans. In addition, this article reports on the results of an integrative approach based on mtDNA analysis and demographic data that tests the hypothesis of a southward shift in raiding zones along the African west coast during the period encompassing the Transatlantic Slave Trade.
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Figueroa KP, Coon H, Santos N, Velazquez L, Mederos LA, Pulst SM. Genetic analysis of age at onset variation in spinocerebellar ataxia type 2. NEUROLOGY-GENETICS 2017; 3:e155. [PMID: 28534046 PMCID: PMC5432368 DOI: 10.1212/nxg.0000000000000155] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 04/03/2017] [Indexed: 12/28/2022]
Abstract
Objective: To examine heritability of the residual variability of spinocerebellar ataxia type 2 (SCA2) age at onset (AO) after controlling for CAG repeat length. Methods: From 1955 to 2001, dates of birth, CAG repeat lengths, AO, sex, familial inheritances, and clinical manifestations were collected for a large Cuban SCA2 cohort of 382 affected individuals, including 129 parent-child pairs and 69 sibships. Analyses were performed with log-transformed AO in the GENMOD procedure to predict AO using repeat length, taking into account family structure. Because all relationships were first degree, the model was implemented with an exchangeable correlation matrix. Familial correlations were estimated using the Pedigree Analysis Package to control for similarity due to genetic relatedness. Results: For the entire sample, the mutant CAG repeat allele explained 69% of AO variance. When adjusted for pedigree structure, this decreased to 50%. Evidence for imprinting or sex-specific effects of the CAG repeat on AO was not found. For the entire sample, we determined an upper bound for heritability of the residual variance of 33% (p = 0.008). Heritability was higher in sib-sib pairs, especially in female sib-sib pairs, than in parent-child pairs. Conclusions: We established that a large proportion of AO variance in SCA2 was determined by genetic modifiers in addition to CAG repeat length. The genetic structure of heritability of the residual AO variance was surprisingly similar to Huntington disease, suggesting the presence of recessive modifying alleles and possibly X-chromosome–linked modifiers.
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Affiliation(s)
- K P Figueroa
- Department of Neurology (K.P.F., S.-M.P.), Department of Psychiatry (H.C.), University of Utah, Salt Lake City; Department of Surgery (N.S.), University of Miami, FL; and Center for the Research and Rehabilitation of Hereditary Ataxias (L.V., L.A.M.), Holguin, Cuba
| | - Hilary Coon
- Department of Neurology (K.P.F., S.-M.P.), Department of Psychiatry (H.C.), University of Utah, Salt Lake City; Department of Surgery (N.S.), University of Miami, FL; and Center for the Research and Rehabilitation of Hereditary Ataxias (L.V., L.A.M.), Holguin, Cuba
| | - Nieves Santos
- Department of Neurology (K.P.F., S.-M.P.), Department of Psychiatry (H.C.), University of Utah, Salt Lake City; Department of Surgery (N.S.), University of Miami, FL; and Center for the Research and Rehabilitation of Hereditary Ataxias (L.V., L.A.M.), Holguin, Cuba
| | - Luis Velazquez
- Department of Neurology (K.P.F., S.-M.P.), Department of Psychiatry (H.C.), University of Utah, Salt Lake City; Department of Surgery (N.S.), University of Miami, FL; and Center for the Research and Rehabilitation of Hereditary Ataxias (L.V., L.A.M.), Holguin, Cuba
| | - Luis Almaguer Mederos
- Department of Neurology (K.P.F., S.-M.P.), Department of Psychiatry (H.C.), University of Utah, Salt Lake City; Department of Surgery (N.S.), University of Miami, FL; and Center for the Research and Rehabilitation of Hereditary Ataxias (L.V., L.A.M.), Holguin, Cuba
| | - Stefan-M Pulst
- Department of Neurology (K.P.F., S.-M.P.), Department of Psychiatry (H.C.), University of Utah, Salt Lake City; Department of Surgery (N.S.), University of Miami, FL; and Center for the Research and Rehabilitation of Hereditary Ataxias (L.V., L.A.M.), Holguin, Cuba
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Massey SE. Strong Amerindian Mitonuclear Discordance in Puerto Rican Genomes Suggests Amerindian Mitochondrial Benefit. Ann Hum Genet 2017; 81:59-77. [DOI: 10.1111/ahg.12185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 01/06/2017] [Indexed: 12/24/2022]
Affiliation(s)
- Steven E. Massey
- Biology Department; University of Puerto Rico - Rio Piedras; PO Box 23360 San Juan Puerto Rico 00931
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Heinz T, Pala M, Gómez-Carballa A, Richards MB, Salas A. Updating the African human mitochondrial DNA tree: Relevance to forensic and population genetics. Forensic Sci Int Genet 2016; 27:156-159. [PMID: 28086175 DOI: 10.1016/j.fsigen.2016.12.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 12/14/2016] [Accepted: 12/30/2016] [Indexed: 11/24/2022]
Abstract
Analysis of human mitochondrial DNA (mtDNA) variation plays an important role in forensic genetic investigations, especially in degraded biological samples and hair shafts. There are many issues of the mtDNA phylogeny that are of special interest to the forensic community, such as haplogroup classification or the post hoc investigation of potential errors in mtDNA datasets. We have analyzed >2200 mitogenomes of African ancestry with the aim of improving the known worldwide phylogeny. More than 300 new minor subclades were identified, and the Time to the Most Recent Common Ancestor (TMRCA) was estimated for each node of the phylogeny. Phylogeographic details are provided which might also be relevant to forensic genetics. The present study has special interest for forensic investigations because current analysis and interpretation of mtDNA casework rest on a solid worldwide phylogeny, as is evident from the role that phylogeny plays in popular resources in the field (e.g. PhyloTree), software (e.g. Haplogrep 2), and databases (e.g. EMPOP). Apart from this forensic genetic interest, we also highlight the impact of this research in anthropological studies, such as those related to the reconstruction of the transatlantic slave trade.
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Affiliation(s)
- Tanja Heinz
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, Instituto de Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, and GenPoB Research Group, Instituto de Investigaciones Sanitarias (IDIS), Hospital Clínico Universitario de Santiago, Galicia, Spain
| | - Maria Pala
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Huddersfield, United Kingdom
| | - Alberto Gómez-Carballa
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, Instituto de Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, and GenPoB Research Group, Instituto de Investigaciones Sanitarias (IDIS), Hospital Clínico Universitario de Santiago, Galicia, Spain
| | - Martin B Richards
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Huddersfield, United Kingdom
| | - Antonio Salas
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, Instituto de Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, and GenPoB Research Group, Instituto de Investigaciones Sanitarias (IDIS), Hospital Clínico Universitario de Santiago, Galicia, Spain.
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Guevara EK, Palo JU, Guillén S, Sajantila A. MtDNA and Y-chromosomal diversity in the Chachapoya, a population from the northeast Peruvian Andes-Amazon divide. Am J Hum Biol 2016; 28:857-867. [PMID: 27265853 DOI: 10.1002/ajhb.22878] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 05/11/2016] [Accepted: 05/13/2016] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVES The ancient Chachapoya were an aggregate of several ethnic groups that shared a common language, religion, and material culture. They inhabited a territory at the juncture of the Andes and the Amazon basin. Their position between those ecozones most likely influenced their genetic composition. We attempted to better understand their population history by assessing the contemporary genetic diversity in the Chachapoya and three of their immediate neighbors (Huancas, Jivaro, and Cajamarca). We inferred signatures of demographic history and genetic affinities, and contrasted the findings with data from other populations on local and continental scales. METHODS We studied mitochondrial DNA (mtDNA; hypervariable segment [HVSI and HVSII]) and Y chromosome (23 short tandem repeats (STRs)) marker data in 382 modern individuals. We used Sanger sequencing for mtDNA and a commercially available kit for Y-chromosomal STR typing. RESULTS The Chachapoya had affinities with various populations of Andean and Amazonian origin. When examining the Native American component, the Chachapoya displayed high levels of genetic diversity. Together with other parameters, for example, large Tajima's D and Fu's Fs, the data indicated no drastic reduction of the population size in the past. CONCLUSION The high level of diversity in the Chachapoya, the lack of evidence of drift in the past, and genetic affinities with a broad range of populations in the Americas reflects an intricate population history in the region. The new genetic data from the Chachapoya indeed seems to point to a genetic complexity that is not yet resolved but beginning to be elucidated. Am. J. Hum. Biol. 28:857-867, 2016. © 2016Wiley Periodicals, Inc.
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Affiliation(s)
- Evelyn K Guevara
- Department of Forensic Medicine, University of Helsinki, Helsinki, Finland
| | - Jukka U Palo
- Department of Forensic Medicine, University of Helsinki, Helsinki, Finland
| | | | - Antti Sajantila
- Department of Forensic Medicine, University of Helsinki, Helsinki, Finland
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Gómez-Carballa A, Moreno F, Álvarez-Iglesias V, Martinón-Torres F, García-Magariños M, Pantoja-Astudillo JA, Aguirre-Morales E, Bustos P, Salas A. Revealing latitudinal patterns of mitochondrial DNA diversity in Chileans. Forensic Sci Int Genet 2015; 20:81-88. [PMID: 26517175 DOI: 10.1016/j.fsigen.2015.10.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 10/03/2015] [Accepted: 10/05/2015] [Indexed: 12/22/2022]
Abstract
The territory of Chile is particularly long and narrow, which combined with its mountainous terrain, makes it a unique scenario for human genetic studies. We obtained 995 control region mitochondrial DNA (mtDNA) sequences from Chileans representing populations living at different latitudes of the country from the North to the southernmost region. The majority of the mtDNA profiles are of Native American origin (∼88%). The remaining haplotypes are mostly of recent European origin (∼11%), and only a minor proportion is of recent African ancestry (∼1%). While these proportions are relatively uniform across the country, more structured patterns of diversity emerge when examining the variation from a phylogeographic perspective. For instance, haplogroup A2 reaches ∼9% in the North, and its frequency decreases gradually to ∼1% in the southernmost populations, while the frequency of haplogroup D (sub-haplogroups D1 and D4) follows the opposite pattern: 36% in the southernmost region, gradually decreasing to 21% in the North. Furthermore, there are remarkable signatures of founder effects in specific sub-clades of Native American (e.g. haplogroups D1j and D4p) and European (e.g. haplogroups T2b3 and K1a4a1a+195) ancestry. We conclude that the magnitude of the latitudinal differences observed in the patterns of mtDNA variation might be relevant in forensic casework.
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Affiliation(s)
- Alberto Gómez-Carballa
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, Instituto de Ciencias Forenses, Grupo de Medicina Xenómica (GMX), Facultade de Medicina, Universidade de Santiago de Compostela, 15872 Galicia, Spain; Grupo de Investigación en Genética, Vacunas, Infecciones y Pediatría (GENVIP), Instituto de Investigación Sanitaria de Santiago and Universidade de Santiago de Compostela (USC), Galicia, Spain
| | - Fabián Moreno
- Servicio Médico Legal, Ministerio de Justicia, Santiago, Chile
| | - Vanesa Álvarez-Iglesias
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, Instituto de Ciencias Forenses, Grupo de Medicina Xenómica (GMX), Facultade de Medicina, Universidade de Santiago de Compostela, 15872 Galicia, Spain
| | - Federico Martinón-Torres
- Grupo de Investigación en Genética, Vacunas, Infecciones y Pediatría (GENVIP), Instituto de Investigación Sanitaria de Santiago and Universidade de Santiago de Compostela (USC), Galicia, Spain; Translational Pediatrics and Infectious Diseases Section, Department of Pediatrics, Hospital Clínico Universitario de Santiago, Santiago de Compostela, Galicia, Spain
| | - Manuel García-Magariños
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, Instituto de Ciencias Forenses, Grupo de Medicina Xenómica (GMX), Facultade de Medicina, Universidade de Santiago de Compostela, 15872 Galicia, Spain
| | | | | | - Patricio Bustos
- Servicio Médico Legal, Ministerio de Justicia, Santiago, Chile
| | - Antonio Salas
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, Instituto de Ciencias Forenses, Grupo de Medicina Xenómica (GMX), Facultade de Medicina, Universidade de Santiago de Compostela, 15872 Galicia, Spain; Grupo de Investigación en Genética, Vacunas, Infecciones y Pediatría (GENVIP), Instituto de Investigación Sanitaria de Santiago and Universidade de Santiago de Compostela (USC), Galicia, Spain.
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Benn Torres J, Vilar MG, Torres GA, Gaieski JB, Bharath Hernandez R, Browne ZE, Stevenson M, Walters W, Schurr TG. Genetic Diversity in the Lesser Antilles and Its Implications for the Settlement of the Caribbean Basin. PLoS One 2015; 10:e0139192. [PMID: 26447794 PMCID: PMC4598113 DOI: 10.1371/journal.pone.0139192] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Accepted: 09/10/2015] [Indexed: 11/18/2022] Open
Abstract
Historical discourses about the Caribbean often chronicle West African and European influence to the general neglect of indigenous people's contributions to the contemporary region. Consequently, demographic histories of Caribbean people prior to and after European contact are not well understood. Although archeological evidence suggests that the Lesser Antilles were populated in a series of northward and eastern migratory waves, many questions remain regarding the relationship of the Caribbean migrants to other indigenous people of South and Central America and changes to the demography of indigenous communities post-European contact. To explore these issues, we analyzed mitochondrial DNA and Y-chromosome diversity in 12 unrelated individuals from the First Peoples Community in Arima, Trinidad, and 43 unrelated Garifuna individuals residing in St. Vincent. In this community-sanctioned research, we detected maternal indigenous ancestry in 42% of the participants, with the remainder having haplotypes indicative of African and South Asian maternal ancestry. Analysis of Y-chromosome variation revealed paternal indigenous American ancestry indicated by the presence of haplogroup Q-M3 in 28% of the male participants from both communities, with the remainder possessing either African or European haplogroups. This finding is the first report of indigenous American paternal ancestry among indigenous populations in this region of the Caribbean. Overall, this study illustrates the role of the region's first peoples in shaping the genetic diversity seen in contemporary Caribbean populations.
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Affiliation(s)
- Jada Benn Torres
- Department of Anthropology, University of Notre Dame, Notre Dame, Indiana, United States of America
- * E-mail:
| | - Miguel G. Vilar
- Department of Anthropology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- Missions Programs, National Geographic Society, Washington, D.C., United States of America
| | - Gabriel A. Torres
- Department of Anthropology, University of Notre Dame, Notre Dame, Indiana, United States of America
| | - Jill B. Gaieski
- Department of Anthropology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | | | - Zoila E. Browne
- The Garifuna Heritage Foundation Inc., Kingston, St. Vincent and the Grenadines
| | - Marlon Stevenson
- The Garifuna Heritage Foundation Inc., Kingston, St. Vincent and the Grenadines
| | - Wendell Walters
- The Garifuna Heritage Foundation Inc., Kingston, St. Vincent and the Grenadines
- Sandy Bay Village, St. Vincent and the Grenadines
| | - Theodore G. Schurr
- Department of Anthropology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
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Origins, admixture and founder lineages in European Roma. Eur J Hum Genet 2015; 24:937-43. [PMID: 26374132 DOI: 10.1038/ejhg.2015.201] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 07/20/2015] [Accepted: 08/11/2015] [Indexed: 11/08/2022] Open
Abstract
The Roma, also known as 'Gypsies', represent the largest and the most widespread ethnic minority of Europe. There is increasing evidence, based on linguistic, anthropological and genetic data, to suggest that they originated from the Indian subcontinent, with subsequent bottlenecks and undetermined gene flow from/to hosting populations during their diaspora. Further support comes from the presence of Indian uniparentally inherited lineages, such as mitochondrial DNA M and Y-chromosome H haplogroups, in a significant number of Roma individuals. However, the limited resolution of most genetic studies so far, together with the restriction of the samples used, have prevented the detection of other non-Indian founder lineages that might have been present in the proto-Roma population. We performed a high-resolution study of the uniparental genomes of 753 Roma and 984 non-Roma hosting European individuals. Roma groups show lower genetic diversity and high heterogeneity compared with non-Roma samples as a result of lower effective population size and extensive drift, consistent with a series of bottlenecks during their diaspora. We found a set of founder lineages, present in the Roma and virtually absent in the non-Roma, for the maternal (H7, J1b3, J1c1, M18, M35b, M5a1, U3, and X2d) and paternal (I-P259, J-M92, and J-M67) genomes. This lineage classification allows us to identify extensive gene flow from non-Roma to Roma groups, whereas the opposite pattern, although not negligible, is substantially lower (up to 6.3%). Finally, the exact haplotype matching analysis of both uniparental lineages consistently points to a Northwestern origin of the proto-Roma population within the Indian subcontinent.
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The Genomic Legacy of the Transatlantic Slave Trade in the Yungas Valley of Bolivia. PLoS One 2015; 10:e0134129. [PMID: 26263179 PMCID: PMC4532489 DOI: 10.1371/journal.pone.0134129] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Accepted: 07/06/2015] [Indexed: 11/23/2022] Open
Abstract
During the period of the Transatlantic Slave Trade (TAST) some enslaved Africans were forced to move to Upper Peru (nowadays Bolivia). At first they were sent to Potosí, but later to the tropical Yungas valley where the Spanish colonizers established a so-called “hacienda system” that was based on slave labor, including African-descendants. Due to their isolation, very little attention has been paid so far to ‘Afro-Bolivian’ communities either within the research field of TAST or in genetic population studies. In this study, a total of 105 individuals from the Yungas were sequenced for their mitochondrial DNA (mtDNA) control region, and mitogenomes were obtained for a selected subset of these samples. We also genotyped 46 Ancestry Informative Markers (AIM) in order to investigate continental ancestry at the autosomal level. In addition, Y-chromosome STR and SNP data for a subset of the same individuals was also available from the literature. The data indicate that the partitioning of mtDNA ancestry in the Yungas differs significantly from that in the rest of the country: 81% Native American, 18% African, and 1% European. Interestingly, the great majority of ‘Afro-descendant’ mtDNA haplotypes in the Yungas (84%) concentrates in the locality of Tocaña. This high proportion of African ancestry in the Tocaña is also manifested in the Y-chromosome (44%) and in the autosomes (56%). In sharp contrast with previous studies on the TAST, the ancestry of about 1/3 of the ‘Afro-Bolivian’ mtDNA haplotypes can be traced back to East and South East Africa, which may be at least partially explained by the Arab slave trade connected to the TAST.
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Mendisco F, Pemonge MH, Leblay E, Romon T, Richard G, Courtaud P, Deguilloux MF. Where are the Caribs? Ancient DNA from ceramic period human remains in the Lesser Antilles. Philos Trans R Soc Lond B Biol Sci 2015; 370:20130388. [PMID: 25487339 DOI: 10.1098/rstb.2013.0388] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The identity and history of the indigenous groups who occupied the Lesser Antilles during the ceramic periods remain highly controversial. Although recent archaeological evidence has challenged hypotheses concerning the organization of human groups in this region, more biological data are needed to fully inform the discussion. Our study provides, to our knowledge, the first palaeogenetic data for Late Ceramic groups of the Guadeloupe archipelago, yielding crucial information concerning the identities of these groups. Despite the generally poor DNA preservation in the tested remains, we were able to retrieve Hypervariable Region 1 sequences from 11 individuals and mitochondrial single-nucleotide polymorphisms from 13 individuals. These novel data provide interesting preliminary results in favour of a common origin for all Saladoid Caribbean communities, i.e. the first ceramic groups of the region, as well as for a local continuity between the Saladoid and post-Saladoid groups. A combination of the genetic data obtained and several pieces of cultural evidence allows us to propose that two different groups inhabited the Guadeloupe archipelago during the Late Ceramic period, with the possible occupation of the La Désirade and Marie-Galante islands by groups affiliated with the Taíno communities. The working hypotheses proposed here appear consistent with recent archaeological evidence.
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Affiliation(s)
- F Mendisco
- Université de Bordeaux, UMR 5199 PACEA, Equipe Anthropologie des Populations Passées et Présentes, Allée Geoffroy ST Hilaire, Pessac Cedex 33615, France
| | - M H Pemonge
- Université de Bordeaux, UMR 5199 PACEA, Equipe Anthropologie des Populations Passées et Présentes, Allée Geoffroy ST Hilaire, Pessac Cedex 33615, France
| | - E Leblay
- Université de Bordeaux, UMR 5199 PACEA, Equipe Anthropologie des Populations Passées et Présentes, Allée Geoffroy ST Hilaire, Pessac Cedex 33615, France
| | - T Romon
- Institut National de Recherches Archéologiques Préventives Guadeloupe, centre de Saint-Claude, rue des Gommiers Blancs Parnasse, Saint-Claude 97120, France
| | - G Richard
- Conseil regional de la Guadeloupe, Avenue Paul Lacavé, Basse-Terre 97100, France
| | - P Courtaud
- Université de Bordeaux, UMR 5199 PACEA, Equipe Anthropologie des Populations Passées et Présentes, Allée Geoffroy ST Hilaire, Pessac Cedex 33615, France
| | - M F Deguilloux
- Université de Bordeaux, UMR 5199 PACEA, Equipe Anthropologie des Populations Passées et Présentes, Allée Geoffroy ST Hilaire, Pessac Cedex 33615, France
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Abstract
The genetic diversity of HBV in human population is often a reflection of its genetic admixture. The aim of this study was to explore the genotypic diversity of HBV in Cuba. The S genomic region of Cuban HBV isolates was sequenced and for selected isolates the complete genome or precore-core sequence was analyzed. The most frequent genotype was A (167/250, 67%), mainly A2 (149, 60%) but also A1 and one A4. A total of 77 isolates were classified as genotype D (31%), with co-circulation of several subgenotypes (56 D4, 2 D1, 5 D2, 7 D3/6 and 7 D7). Three isolates belonged to genotype E, two to H and one to B3. Complete genome sequence analysis of selected isolates confirmed the phylogenetic analysis performed with the S region. Mutations or polymorphisms in precore region were more common among genotype D compared to genotype A isolates. The HBV genotypic distribution in this Caribbean island correlates with the Y lineage genetic background of the population, where a European and African origin prevails. HBV genotypes E, B3 and H isolates might represent more recent introductions.
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Söchtig J, Álvarez-Iglesias V, Mosquera-Miguel A, Gelabert-Besada M, Gómez-Carballa A, Salas A. Genomic insights on the ethno-history of the Maya and the 'Ladinos' from Guatemala. BMC Genomics 2015; 16:131. [PMID: 25887241 PMCID: PMC4422311 DOI: 10.1186/s12864-015-1339-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Accepted: 02/12/2015] [Indexed: 11/10/2022] Open
Abstract
Background Guatemala is a multiethnic and multilingual country located in Central America. The main population groups separate ‘Ladinos’ (mixed Native American-African-Spanish), and Native indigenous people of Maya descent. Among the present-day Guatemalan Maya, there are more than 20 different ethnic groups separated by different languages and cultures. Genetic variation of these communities still remains largely unexplored. The principal aim of this study is to explore the genetic variability of the Maya and ‘Ladinos’ from Guatemala by means of uniparental and ancestry informative markers (AIMs). Results Analyses of uniparental genetic markers indicate that Maya have a dominant Native American ancestry (mitochondrial DNA [mtDNA]: 100%; Y-chromosome: 94%). ‘Ladino’, however, show a clear gender-bias as indicated by the large European ancestry observed in the Y-chromosome (75%) compared to the mtDNA (0%). Autosomal polymorphisms (AIMs) also mirror this marked gender-bias: (i) Native American ancestry: 92% for the Maya vs. 55% for the ‘Ladino’, and (ii) European ancestry: 8% for the Maya vs. 41% for the ‘Ladino’. In addition, the impact of the Trans-Atlantic slave trade on the present-day Guatemalan population is very low (and only occurs in the ‘Ladino’; mtDNA: 9%; AIMs: 4%), in part mirroring the fact that Guatemala has a predominant orientation to the Pacific Ocean instead of a Caribbean one. Sequencing of entire Guatemalan mitogenomes has led to improved Native American phylogeny via the addition of new haplogroups that are mainly observed in Mesoamerica and/or the North of South America. Conclusions The data reveal the existence of a fluid gene flow in the Mesoamerican area and a predominant unidirectional flow towards South America, most likely occurring during the Pre-Classic (1800 BC-200 AD) and the Classic (200–1000 AD) Eras of the Mesoamerican chronology, coinciding with development of the most distinctive and advanced Mesoamerican civilization, the Maya. Phylogenetic features of mtDNA data also suggest a demographic scenario that is compatible with moderate local endogamy and isolation in the Maya combined with episodes of gene exchange between ethnic groups, suggesting an ethno-genesis in the Guatemalan Maya that is recent and supported on a cultural rather than a biological basis. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-1339-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jens Söchtig
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, and Instituto de Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, CP 15872, Galicia, Spain.
| | - Vanesa Álvarez-Iglesias
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, and Instituto de Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, CP 15872, Galicia, Spain.
| | - Ana Mosquera-Miguel
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, and Instituto de Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, CP 15872, Galicia, Spain.
| | - Miguel Gelabert-Besada
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, and Instituto de Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, CP 15872, Galicia, Spain.
| | - Alberto Gómez-Carballa
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, and Instituto de Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, CP 15872, Galicia, Spain.
| | - Antonio Salas
- Unidade de Xenética, Departamento de Anatomía Patolóxica e Ciencias Forenses, and Instituto de Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, CP 15872, Galicia, Spain.
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Bryc K, Durand EY, Macpherson JM, Reich D, Mountain JL. The genetic ancestry of African Americans, Latinos, and European Americans across the United States. Am J Hum Genet 2015; 96:37-53. [PMID: 25529636 PMCID: PMC4289685 DOI: 10.1016/j.ajhg.2014.11.010] [Citation(s) in RCA: 435] [Impact Index Per Article: 48.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 11/17/2014] [Indexed: 12/11/2022] Open
Abstract
Over the past 500 years, North America has been the site of ongoing mixing of Native Americans, European settlers, and Africans (brought largely by the trans-Atlantic slave trade), shaping the early history of what became the United States. We studied the genetic ancestry of 5,269 self-described African Americans, 8,663 Latinos, and 148,789 European Americans who are 23andMe customers and show that the legacy of these historical interactions is visible in the genetic ancestry of present-day Americans. We document pervasive mixed ancestry and asymmetrical male and female ancestry contributions in all groups studied. We show that regional ancestry differences reflect historical events, such as early Spanish colonization, waves of immigration from many regions of Europe, and forced relocation of Native Americans within the US. This study sheds light on the fine-scale differences in ancestry within and across the United States and informs our understanding of the relationship between racial and ethnic identities and genetic ancestry.
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Affiliation(s)
- Katarzyna Bryc
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA; 23andMe, Inc., Mountain View, CA 94043, USA.
| | | | | | - David Reich
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA; Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
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Cárdenas JM, Heinz T, Pardo-Seco J, Álvarez-Iglesias V, Taboada-Echalar P, Sánchez-Diz P, Carracedo Á, Salas A. The multiethnic ancestry of Bolivians as revealed by the analysis of Y-chromosome markers. Forensic Sci Int Genet 2015; 14:210-8. [DOI: 10.1016/j.fsigen.2014.10.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 10/20/2014] [Accepted: 10/27/2014] [Indexed: 10/24/2022]
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Fadhlaoui-Zid K, Garcia-Bertrand R, Alfonso-Sánchez MA, Zemni R, Benammar-Elgaaied A, Herrera RJ. Sousse: extreme genetic heterogeneity in North Africa. J Hum Genet 2014; 60:41-9. [PMID: 25471516 DOI: 10.1038/jhg.2014.99] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2014] [Revised: 10/20/2014] [Accepted: 10/21/2014] [Indexed: 11/09/2022]
Abstract
The male genetic landscape of the territory currently known as Tunisia is hampered by the scarcity of data, especially from cosmopolitan areas such as the coastal city of Sousse. In order to alleviate this lacuna, 220 males from Sousse were examined, for the first time, for more than 50 Y-chromosome single-nucleotide polymorphisms (Y-SNPs) markers and compared with 3099 individuals from key geographically targeted locations in North Africa, Europe and the Near East. The paternal lineages observed belong to a common set of Y haplogroups previously described in North Africa. In addition to the prominent autochthonous North African E-M81 haplogroup which is exclusively represented by its subclade E-M183 (44.55% of Y-chromosomes), a number of Near Eastern Neolithic lineages including E-M78, J-M267 and J-M172 account for 39% of the Y-chromosomes detected. Principal component analysis based on haplogroup frequencies, multidimensional scaling based on Rst genetic distances and analyses of molecular variance using both Y-chromosome short tandem repeat haplotypes and Y-SNP haplogroup data revealed that the Tunisian and North African groups, as a whole, are intra- and inter-specific diverse with Sousse being highly heterogeneous.
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Affiliation(s)
- Karima Fadhlaoui-Zid
- 1] Biology Department, Colorado College, Colorado Springs, CO, USA [2] Laboratory of Genetics, Immunology, and Human Pathologies, Faculty of Science of Tunis, University Tunis El Manar, Tunis, Tunisia
| | | | - Miguel A Alfonso-Sánchez
- Departamento de Genética y Antropología Fı sica, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Bilbao, Bizkaia, Spain
| | - Ramzi Zemni
- Laboratory of Immunogenetics, Faculty of Medicine of Sousse, University of Sousse, Sousse, Tunisia
| | - Amel Benammar-Elgaaied
- Laboratory of Genetics, Immunology, and Human Pathologies, Faculty of Science of Tunis, University Tunis El Manar, Tunis, Tunisia
| | - Rene J Herrera
- Biology Department, Colorado College, Colorado Springs, CO, USA
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Madrilejo N, Lombard H, Torres JB. Origins of marronage: Mitochondrial lineages of Jamaica's Accompong Town Maroons. Am J Hum Biol 2014; 27:432-7. [PMID: 25392952 DOI: 10.1002/ajhb.22656] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 10/02/2014] [Accepted: 10/22/2014] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVES The Accompong Town Maroons are descendants of enslaved Africans who successfully waged war against British colonial rule and established an independent community in western Jamaica. There are discrepancies regarding Accompong Town Maroon ancestry with some scholars noting ancestry from both Africans and Taínos, Jamaica's indigenous population, while other scholars only acknowledge African ancestry. We considered the mitochondrial lineages of contemporary Accompong Town Maroons to address the question of ancestral origins. METHODS We sequenced a section of the mitochondrial DNA control region (np 16,024-16,569) and genotyped a panel of hierarchically selected haplogroup diagnostic SNPs for 50 individuals with genealogical ties to Accompong Town. Mitochondrial haplotypes were also compared with publically available Jamaican mitochondrial haplotypes using an exact test as well as haplotypes within the EMPOP public database to further access biogeographic origins. RESULTS L-type mitochondrial haplogroups were observed in 96% of samples, and the remaining 4% belonged to haplogroup B2. Haplotype diversity was 0.922 (SD = 0.024) and not significantly different than the comparable Jamaican population. Of the two B2 haplotypes, one matched haplotypes throughout the Americas and East Asia and the other matched only in East Asia. These results suggest both African and indigenous American maternal ancestries within Accompong Town. CONCLUSIONS Our data suggested that the maternal ancestry of contemporary Accompong Town Maroons is predominantly African and, despite claims to suggest otherwise, also indigenous American. Our study complemented Maroon oral histories, archeological data, and illuminated how colonization shaped human genetic variation within the Caribbean.
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Affiliation(s)
- Nicole Madrilejo
- Department of Anthropology, University of Notre Dame, Notre Dame, Indiana, 46556; Department of Pre-Professional Studies, University of Notre Dame, Notre Dame, Indiana, 46556
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Alvarez L, Ciria E, Marques SL, Santos C, Aluja MP. Y-chromosome analysis in a Northwest Iberian population: unraveling the impact of Northern African lineages. Am J Hum Biol 2014; 26:740-6. [PMID: 25123837 DOI: 10.1002/ajhb.22602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Revised: 06/03/2014] [Accepted: 06/15/2014] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVES To provide new clues about the genetic origin, composition and structure of the population of the Spanish province of Zamora, with an emphasis on the genetic impact of the period of Islamic rule in the Iberian Peninsula. METHODS Polymorphisms in the paternally inherited Y-chromosome, Single Nucleotide Polymorphisms and Short Tandem Repeats, were analyzed in 235 unrelated males born in six different regions in the Zamora province. RESULTS A relatively homogenous Y-chromosome haplogroup composition was observed in the Zamora province. Haplogroups R1b1-P25 and I-M170, widespread in European populations, accounted for 64.9% of the total sample. Moreover, all of the observed African lineages, accounting for 10.2% of the total variability, belonged to haplogroups having Northwest African origin (E1b1b1b-M81, E1b1b1a-β-M78, and J1-M267). CONCLUSIONS No differences between regions or sub-structure due to geographical boundaries were detected. The specific Northwest African male lineages observed contrast with the mitochondrial DNA data, where the majority of African lineages were found to be sub-Saharan. This work made it possible to study the impact of recent historical events in the male gene pool in the province of Zamora in Spain.
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Affiliation(s)
- Luis Alvarez
- Unitat Antropologia Biològica, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain; IPATIMUP, Institute of Molecular Pathology and Immunology of the University of Porto, 4200-465, Porto, Portugal
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Cuba: exploring the history of admixture and the genetic basis of pigmentation using autosomal and uniparental markers. PLoS Genet 2014; 10:e1004488. [PMID: 25058410 PMCID: PMC4109857 DOI: 10.1371/journal.pgen.1004488] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 05/20/2014] [Indexed: 11/19/2022] Open
Abstract
We carried out an admixture analysis of a sample comprising 1,019 individuals from all the provinces of Cuba. We used a panel of 128 autosomal Ancestry Informative Markers (AIMs) to estimate the admixture proportions. We also characterized a number of haplogroup diagnostic markers in the mtDNA and Y-chromosome in order to evaluate admixture using uniparental markers. Finally, we analyzed the association of 16 single nucleotide polymorphisms (SNPs) with quantitative estimates of skin pigmentation. In the total sample, the average European, African and Native American contributions as estimated from autosomal AIMs were 72%, 20% and 8%, respectively. The Eastern provinces of Cuba showed relatively higher African and Native American contributions than the Western provinces. In particular, the highest proportion of African ancestry was observed in the provinces of Guantánamo (40%) and Santiago de Cuba (39%), and the highest proportion of Native American ancestry in Granma (15%), Holguín (12%) and Las Tunas (12%). We found evidence of substantial population stratification in the current Cuban population, emphasizing the need to control for the effects of population stratification in association studies including individuals from Cuba. The results of the analyses of uniparental markers were concordant with those observed in the autosomes. These geographic patterns in admixture proportions are fully consistent with historical and archaeological information. Additionally, we identified a sex-biased pattern in the process of gene flow, with a substantially higher European contribution from the paternal side, and higher Native American and African contributions from the maternal side. This sex-biased contribution was particularly evident for Native American ancestry. Finally, we observed that SNPs located in the genes SLC24A5 and SLC45A2 are strongly associated with melanin levels in the sample.
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Vilar MG, Melendez C, Sanders AB, Walia A, Gaieski JB, Owings AC, Schurr TG. Genetic diversity in Puerto Rico and its implications for the peopling of the Island and the West Indies. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2014; 155:352-68. [PMID: 25043798 DOI: 10.1002/ajpa.22569] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 06/30/2014] [Accepted: 07/01/2014] [Indexed: 01/05/2023]
Abstract
Puerto Rico and the surrounding islands rest on the eastern fringe of the Caribbean's Greater Antilles, located less than 100 miles northwest of the Lesser Antilles. Puerto Ricans are genetic descendants of pre-Columbian peoples, as well as peoples of European and African descent through 500 years of migration to the island. To infer these patterns of pre-Columbian and historic peopling of the Caribbean, we characterized genetic diversity in 326 individuals from the southeastern region of Puerto Rico and the island municipality of Vieques. We sequenced the mitochondrial DNA (mtDNA) control region of all of the samples and the complete mitogenomes of 12 of them to infer their putative place of origin. In addition, we genotyped 121 male samples for 25 Y-chromosome single nucleotide polymorphism and 17 STR loci. Approximately 60% of the participants had indigenous mtDNA haplotypes (mostly from haplogroups A2 and C1), while 25% had African and 15% European haplotypes. Three A2 sublineages were unique to the Greater Antilles, one of which was similar to Mesoamerican types, while C1b haplogroups showed links to South America, suggesting that people reached the island from the two distinct continental source areas. However, none of the male participants had indigenous Y-chromosomes, with 85% of them instead being European/Mediterranean and 15% sub-Saharan African in origin. West Eurasian Y-chromosome short tandem repeat haplotypes were quite diverse and showed similarities to those observed in southern Europe, North Africa and the Middle East. These results attest to the distinct, yet equally complex, pasts for the male and female ancestors of modern day Puerto Ricans.
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Affiliation(s)
- Miguel G Vilar
- Department of Anthropology, University of Pennsylvania, Philadelphia, PA, 19104-6398
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Fregel R, Seetah K, Betancor E, Suárez NM, Calaon D, Čaval S, Janoo A, Pestano J. Multiple ethnic origins of mitochondrial DNA lineages for the population of Mauritius. PLoS One 2014; 9:e93294. [PMID: 24676463 PMCID: PMC3968120 DOI: 10.1371/journal.pone.0093294] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Accepted: 03/04/2014] [Indexed: 11/18/2022] Open
Abstract
This article reports on the first genetic assessment of the contemporary Mauritian population. Small island nodes such as Mauritius played a critical role in historic globalization processes and revealing high-resolution details of labour sourcing is crucial in order to better understand early-modern diaspora events. Mauritius is a particularly interesting case given detailed historic accounts attesting to European (Dutch, French and British), African and Asian points of origin. Ninety-seven samples were analysed for mitochondrial DNA to begin unravelling the complex dynamics of the island's modern population. In corroboration with general demographic information, the majority of maternal lineages were derived from South Asia (58.76%), with Malagasy (16.60%), East/Southeast Asian (11.34%) and Sub-Saharan African (10.21%) also making significant contributions. This study pinpoints specific regional origins for the South Asian genetic contribution, showing a greater influence on the contemporary population from northern and southeast India. Moreover, the analysis of lineages related to the slave trade demonstrated that Madagascar and East Asia were the main centres of origin, with less influence from West Africa.
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Affiliation(s)
- Rosa Fregel
- Department of Genetics, Faculty of Medicine, University of Las Palmas de Gran Canaria, Las Palmas, Spain
- Department of Genetics, Faculty of Biology, University of La Laguna, La Laguna, Spain
- Department of Anthropology, Stanford University, Stanford, California, United States of America
- * E-mail:
| | - Krish Seetah
- Department of Anthropology, Stanford University, Stanford, California, United States of America
| | - Eva Betancor
- Forensic Genetics Laboratory, Institute of Legal Medicine of Las Palmas, Las Palmas, Spain
| | - Nicolás M. Suárez
- Department of Genetics, Faculty of Medicine, University of Las Palmas de Gran Canaria, Las Palmas, Spain
| | - Diego Calaon
- Department of Anthropology, Stanford University, Stanford, California, United States of America
- IDEAS Interdepartmental Centre, Ca'Foscari University, Venice, Italy
| | - Saša Čaval
- Department of Anthropology, Stanford University, Stanford, California, United States of America
| | - Anwar Janoo
- Department of History, University of Mauritius, Reduit, Mauritius
| | - Jose Pestano
- Department of Genetics, Faculty of Medicine, University of Las Palmas de Gran Canaria, Las Palmas, Spain
- Forensic Genetics Laboratory, Institute of Legal Medicine of Las Palmas, Las Palmas, Spain
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Phylogenetic and forensic studies of the Southeast Florida Hispanic population using the next-generation forensic PowerPlex® Y23 STR marker system. Leg Med (Tokyo) 2013; 15:289-92. [DOI: 10.1016/j.legalmed.2013.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2013] [Revised: 07/15/2013] [Accepted: 07/16/2013] [Indexed: 10/26/2022]
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Fresia P, Azeredo-Espin AML, Lyra ML. The phylogeographic history of the new world screwworm fly, inferred by approximate bayesian computation analysis. PLoS One 2013; 8:e76168. [PMID: 24098436 PMCID: PMC3788763 DOI: 10.1371/journal.pone.0076168] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 08/21/2013] [Indexed: 11/20/2022] Open
Abstract
Insect pest phylogeography might be shaped both by biogeographic events and by human influence. Here, we conducted an approximate Bayesian computation (ABC) analysis to investigate the phylogeography of the New World screwworm fly, Cochliomyia hominivorax, with the aim of understanding its population history and its order and time of divergence. Our ABC analysis supports that populations spread from North to South in the Americas, in at least two different moments. The first split occurred between the North/Central American and South American populations in the end of the Last Glacial Maximum (15,300-19,000 YBP). The second split occurred between the North and South Amazonian populations in the transition between the Pleistocene and the Holocene eras (9,100-11,000 YBP). The species also experienced population expansion. Phylogenetic analysis likewise suggests this north to south colonization and Maxent models suggest an increase in the number of suitable areas in South America from the past to present. We found that the phylogeographic patterns observed in C. hominivorax cannot be explained only by climatic oscillations and can be connected to host population histories. Interestingly we found these patterns are very coincident with general patterns of ancient human movements in the Americas, suggesting that humans might have played a crucial role in shaping the distribution and population structure of this insect pest. This work presents the first hypothesis test regarding the processes that shaped the current phylogeographic structure of C. hominivorax and represents an alternate perspective on investigating the problem of insect pests.
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Affiliation(s)
- Pablo Fresia
- Departamento de Entomologia e Acarologia, Escola Superior de Agricultura "Luiz de Queiroz", Universidade de São Paulo, São Paulo, Brasil
- * E-mail:
| | - Ana Maria L. Azeredo-Espin
- Centro de Biologia Molecular e Engenharia Genética and Instituto de Biologia, Universidade Estadual de Campinas, São Paulo, Brasil
| | - Mariana L. Lyra
- Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista, São Paulo, Brasil
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Martínez-Cortés G, Salazar-Flores J, Haro-Guerrero J, Rubi-Castellanos R, Velarde-Félix JS, Muñoz-Valle JF, López-Casamichana M, Carrillo-Tapia E, Canseco-Avila LM, Bravi CM, López-Armenta M, Rangel-Villalobos H. Maternal admixture and population structure in Mexican-Mestizos based on mtDNA haplogroups. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2013; 151:526-37. [PMID: 23754474 DOI: 10.1002/ajpa.22293] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 04/23/2013] [Indexed: 12/16/2022]
Abstract
The maternal ancestry (mtDNA) has important applications in different research fields, such as evolution, epidemiology, identification, and human population history. This is particularly interesting in Mestizos, which constitute the main population in Mexico (∼93%) resulting from post-Columbian admixture between Spaniards, Amerindians, and African slaves, principally. Consequently, we conducted minisequencing analysis (SNaPshot) of 11 mitochondrial single-nucleotide polymorphisms in 742 Mestizos of 10 populations from different regions in Mexico. The predominant maternal ancestry was Native American (92.9%), including Haplogroups A, B, C, and D (47, 23.7, 15.9, and 6.2%, respectively). Conversely, European and African ancestries were less frequent (5.3 and 1.9%, respectively). The main characteristics of the maternal lineages observed in Mexican-Mestizos comprised the following: 1) contrasting geographic gradient of Haplogroups A and C; 2) increase of European lineages toward the Northwest; 3) low or absent, but homogeneous, African ancestry throughout the Mexican territory; 4) maternal lineages in Mestizos roughly represent the genetic makeup of the surrounding Amerindian groups, particularly toward the Southeast, but not in the North and West; 5) continuity over time of the geographic distribution of Amerindian lineages in Mayas; and 6) low but significant maternal population structure (FST = 2.8%; P = 0.0000). The average ancestry obtained from uniparental systems (mtDNA and Y-chromosome) in Mexican-Mestizos was correlated with previous ancestry estimates based on autosomal systems (genome-wide single-nucleotide polymorphisms and short tandem repeats). Finally, the comparison of paternal and maternal lineages provided additional information concerning the gender bias admixture, mating patterns, and population structure in Mestizos throughout the Mexican territory.
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Affiliation(s)
- Gabriela Martínez-Cortés
- Instituto de Investigación en Genética Molecular, Centro Universitario de la Ciénega, Universidad de Guadalajara, Ocotlán, Jalisco, México
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Torres JB, Stone AC, Kittles R. An anthropological genetic perspective on Creolization in the Anglophone Caribbean. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2013; 151:135-43. [PMID: 23553646 DOI: 10.1002/ajpa.22261] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Accepted: 02/14/2013] [Indexed: 01/23/2023]
Abstract
Variable socio-cultural influences developed in the colonial Caribbean as a result of competing European hegemonic rule. In this study, we examine how colonial regulations regarding social hierarchies and mate choice worked to influence the genetic landscape of contemporary African Caribbean populations. To this end, 420 individuals from Dominica, Grenada, St. Kitts, St. Lucia, St. Thomas, St. Vincent, Jamaica, and Trinidad were genotyped for 105 autosomal ancestry informative markers. Based on these data, population substructure and admixture were assessed using an exact test, a model-based clustering method, and principal components analysis. On average, individual admixture estimates of the pooled African Caribbean sample were 77% (SD ± 18%) West African, 15% (SD ± 15%) European, and 7.7% (SD ± 8%) Native American. In general, ancestry estimates were significantly different between Dominica and all other islands. Genetic structure analyses indicated subdivision into two subpopulations on most islands. Finally, unlike all of the other Caribbean populations that clustered adjacent to African populations, the Dominican population was more intermediate between the three parental groups in the principal components plot. As a result of the significant French influence throughout Dominican history, Dominica did not have the same cultural influences that typified other Anglophone colonies. Consequently, there were different social hierarchies and resulting mate choices on Dominica compared with the other considered islands. This study highlights the complex socio-cultural history of a broad region of the Caribbean and attests to the interplay between social and biological factors in shaping the genetic diversity present in present-day communities.
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Affiliation(s)
- Jada Benn Torres
- Department of Anthropology, University of Notre Dame, Notre Dame, IN 46556, USA.
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Taboada-Echalar P, Álvarez-Iglesias V, Heinz T, Vidal-Bralo L, Gómez-Carballa A, Catelli L, Pardo-Seco J, Pastoriza A, Carracedo Á, Torres-Balanza A, Rocabado O, Vullo C, Salas A. The genetic legacy of the pre-colonial period in contemporary Bolivians. PLoS One 2013; 8:e58980. [PMID: 23527064 PMCID: PMC3604014 DOI: 10.1371/journal.pone.0058980] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2012] [Accepted: 02/12/2013] [Indexed: 01/27/2023] Open
Abstract
Only a few genetic studies have been carried out to date in Bolivia. However, some of the most important (pre)historical enclaves of South America were located in these territories. Thus, the (sub)-Andean region of Bolivia was part of the Inca Empire, the largest state in Pre-Columbian America. We have genotyped the first hypervariable region (HVS-I) of 720 samples representing the main regions in Bolivia, and these data have been analyzed in the context of other pan-American samples (>19,000 HVS-I mtDNAs). Entire mtDNA genome sequencing was also undertaken on selected Native American lineages. Additionally, a panel of 46 Ancestry Informative Markers (AIMs) was genotyped in a sub-set of samples. The vast majority of the Bolivian mtDNAs (98.4%) were found to belong to the main Native American haplogroups (A: 14.3%, B: 52.6%, C: 21.9%, D: 9.6%), with little indication of sub-Saharan and/or European lineages; however, marked patterns of haplogroup frequencies between main regions exist (e.g. haplogroup B: Andean [71%], Sub-Andean [61%], Llanos [32%]). Analysis of entire genomes unraveled the phylogenetic characteristics of three Native haplogroups: the pan-American haplogroup B2b (originated ∼21.4 thousand years ago [kya]), A2ah (∼5.2 kya), and B2o (∼2.6 kya). The data suggest that B2b could have arisen in North California (an origin even in the north most region of the American continent cannot be disregarded), moved southward following the Pacific coastline and crossed Meso-America. Then, it most likely spread into South America following two routes: the Pacific path towards Peru and Bolivia (arriving here at about ∼15.2 kya), and the Amazonian route of Venezuela and Brazil southwards. In contrast to the mtDNA, Ancestry Informative Markers (AIMs) reveal a higher (although geographically variable) European introgression in Bolivians (25%). Bolivia shows a decreasing autosomal molecular diversity pattern along the longitudinal axis, from the Altiplano to the lowlands. Both autosomes and mtDNA revealed a low impact (1-2%) of a sub-Saharan component in Bolivians.
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Affiliation(s)
- Patricia Taboada-Echalar
- Unidade de Xenética, Instituto de Ciencias Forenses and Departamento de Anatomía Patolóxica e Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, Galicia, Spain
| | - Vanesa Álvarez-Iglesias
- Unidade de Xenética, Instituto de Ciencias Forenses and Departamento de Anatomía Patolóxica e Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, Galicia, Spain
| | - Tanja Heinz
- Unidade de Xenética, Instituto de Ciencias Forenses and Departamento de Anatomía Patolóxica e Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, Galicia, Spain
| | - Laura Vidal-Bralo
- Unidade de Xenética, Instituto de Ciencias Forenses and Departamento de Anatomía Patolóxica e Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, Galicia, Spain
| | - Alberto Gómez-Carballa
- Unidade de Xenética, Instituto de Ciencias Forenses and Departamento de Anatomía Patolóxica e Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, Galicia, Spain
| | - Laura Catelli
- Equipo Argentino de Antropología Forense, Córdoba, Argentina
| | - Jacobo Pardo-Seco
- Unidade de Xenética, Instituto de Ciencias Forenses and Departamento de Anatomía Patolóxica e Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, Galicia, Spain
| | - Ana Pastoriza
- Unidade de Xenética, Instituto de Ciencias Forenses and Departamento de Anatomía Patolóxica e Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, Galicia, Spain
| | - Ángel Carracedo
- Unidade de Xenética, Instituto de Ciencias Forenses and Departamento de Anatomía Patolóxica e Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, Galicia, Spain
| | - Antonio Torres-Balanza
- Instituto de Investigaciones Forenses, Fiscalía General del Estado Plurinacional de Bolivia, La Paz, Bolivia
| | - Omar Rocabado
- Instituto de Investigaciones Forenses, Fiscalía General del Estado Plurinacional de Bolivia, La Paz, Bolivia
| | - Carlos Vullo
- Equipo Argentino de Antropología Forense, Córdoba, Argentina
- Laboratorio de Inmunogenética y Diagnóstico Molecular, Córdoba, Argentina
| | - Antonio Salas
- Unidade de Xenética, Instituto de Ciencias Forenses and Departamento de Anatomía Patolóxica e Ciencias Forenses, Facultade de Medicina, Universidade de Santiago de Compostela, Galicia, Spain
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