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Liu L, Li S, Cui W, Fang Y, Mei S, Chen M, Xu H, Bai X, Zhu B. Ancestry analysis using a self-developed 56 AIM-InDel loci and machine learning methods. Forensic Sci Int 2024; 361:112065. [PMID: 38889603 DOI: 10.1016/j.forsciint.2024.112065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/11/2023] [Accepted: 05/16/2024] [Indexed: 06/20/2024]
Abstract
Insertion/deletion (InDel) polymorphisms can be used as one of the ancestry-informative markers in ancestry analysis. In this study, a self-developed panel consisting of 56 ancestry-informative InDels was used to investigate the genetic structures and genetic relationships between Chinese Inner Mongolia Manchu group and 26 reference populations. The Inner Mongolia Manchu group was closely related in genetic background to East Asian populations, especially the Han Chinese in Beijing. Moreover, populations from northern and southern East Asia displayed obvious variations in ancestral components, suggesting the potential value of this panel in distinguishing the populations from northern and southern East Asia. Subsequently, four machine learning models were performed based on the 56 AIM-InDel loci to evaluate the performance of this panel in ancestry prediction. The random forest model presented better performance in ancestry prediction, with 91.87% and 99.73% accuracy for the five and three continental populations, respectively. The individuals of the Inner Mongolia Manchu group were assigned to the East Asian populations by the random forest model, and they exhibited closer genetic affinities with northern East Asian populations. Furthermore, the random forest model distinguished 87.18% of the Inner Mongolia Manchus from the East Asian populations, suggesting that the random forest model based on the 56 ancestry-informative InDels could be a potential tool for ancestry analysis.
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Affiliation(s)
- Liu Liu
- Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong, PR China
| | - Shuanglin Li
- Department of Anatomy and Histology, School of Basic Medical Sciences, Shenzhen University Medical School, Shenzhen University, 1066 Xueyuan Avenue, Shenzhen, Guangdong, China
| | - Wei Cui
- Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong, PR China
| | - Yating Fang
- Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong, PR China
| | - Shuyan Mei
- Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong, PR China
| | - Man Chen
- Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong, PR China
| | - Hui Xu
- Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong, PR China
| | - Xiaole Bai
- Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong, PR China
| | - Bofeng Zhu
- Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong, PR China; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'anJiaotong University, 99 Yanxiang Road, Xi'an, Shaanxi, PR China.
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Nguidi M, Gomes V, Vullo C, Rodrigues P, Rotondo M, Longaray M, Catelli L, Martínez B, Campos A, Carvalho E, Orovboni VO, Keshinro SO, Simão F, Gusmão L. Impact of patrilocality on contrasting patterns of paternal and maternal heritage in Central-West Africa. Sci Rep 2024; 14:15653. [PMID: 38977763 PMCID: PMC11231350 DOI: 10.1038/s41598-024-65428-z] [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: 09/19/2023] [Accepted: 06/20/2024] [Indexed: 07/10/2024] Open
Abstract
Despite their ancient past and high diversity, African populations are the least represented in human population genetic studies. In this study, uniparental markers (mtDNA and Y chromosome) were used to investigate the impact of sociocultural factors on the genetic diversity and inter-ethnolinguistic gene flow in the three major Nigerian groups: Hausa (n = 89), Yoruba (n = 135) and Igbo (n = 134). The results show a distinct history from the maternal and paternal perspectives. The three Nigerian groups present a similar substrate for mtDNA, but not for the Y chromosome. The two Niger-Congo groups, Yoruba and Igbo, are paternally genetically correlated with populations from the same ethnolinguistic affiliation. Meanwhile, the Hausa is paternally closer to other Afro-Asiatic populations and presented a high diversity of lineages from across Africa. When expanding the analyses to other African populations, it is observed that language did not act as a major barrier to female-mediated gene flow and that the differentiation of paternal lineages is better correlated with linguistic than geographic distances. The results obtained demonstrate the impact of patrilocality, a common and well-established practice in populations from Central-West Africa, in the preservation of the patrilineage gene pool and in the affirmation of identity between groups.
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Affiliation(s)
- Masinda Nguidi
- DNA Diagnostic Laboratory (LDD), State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil.
| | - Verónica Gomes
- Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal
- Institute of Pathology and Molecular Immunology, University of Porto (IPATIMUP), Porto, Portugal
| | - Carlos Vullo
- DNA Forensic Laboratory, Equipo Argentino de Antropología Forense (EAAF), Córdoba, Argentina
| | - Pedro Rodrigues
- Institute of Pathology and Molecular Immunology, University of Porto (IPATIMUP), Porto, Portugal
| | - Martina Rotondo
- DNA Forensic Laboratory, Equipo Argentino de Antropología Forense (EAAF), Córdoba, Argentina
| | - Micaela Longaray
- DNA Forensic Laboratory, Equipo Argentino de Antropología Forense (EAAF), Córdoba, Argentina
| | - Laura Catelli
- DNA Forensic Laboratory, Equipo Argentino de Antropología Forense (EAAF), Córdoba, Argentina
| | - Beatriz Martínez
- Institute for Immunological Research, University of Cartagena, Cartagena, Colombia
| | - Afonso Campos
- Institute of Pathology and Molecular Immunology, University of Porto (IPATIMUP), Porto, Portugal
| | - Elizeu Carvalho
- DNA Diagnostic Laboratory (LDD), State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
| | - Victoria O Orovboni
- Department of Immunology and Inflammation, Imperial College London, London, UK
| | | | - Filipa Simão
- DNA Diagnostic Laboratory (LDD), State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
- Department of Forensic Science, Virginia Commonwealth University, Richmond, VA, USA
| | - Leonor Gusmão
- DNA Diagnostic Laboratory (LDD), State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil.
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Castillo A, Rondón F, Mantilla G, Gusmão L, Simão F. Maternal ancestry and lineages diversity of the Santander population from Colombia. Forensic Sci Res 2023; 8:241-248. [PMID: 38221971 PMCID: PMC10785602 DOI: 10.1093/fsr/owad032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/20/2023] [Indexed: 01/16/2024] Open
Abstract
Santander, located in the Andean region of Colombia, is one of the 32 departments of the country. Its population was shaped by intercontinental admixture between autochthonous native Americans, European settlers, and African slaves. To establish forensic databases of haplotype frequencies, the evaluation of population substructure is crucial to capture the genetic diversity in admixed populations. Total control region mitochondrial deoxyribonucleic acid haplotypes were determined for 204 individuals born in the seven provinces across the department. The maternal native heritage is highly preserved in Santander genetic background, with 90% of the haplotypes belonging to haplogroups inside A2, B4, C1, and D. Most native lineages are found broadly across the American continent, while some sub-branches are concentrated in Central America and north South America. Subtle European (6%) and African (4%) input was detected. In pairwise comparisons between provinces, relatively high FST values were found in some cases, although not statistically significant. Nonetheless, when provinces were grouped according to the principal component analysis results, significant differences were detected between groups. The database on mitochondrial deoxyribonucleic acid control region haplotype frequencies established here can be further used for populational and forensic purposes.
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Affiliation(s)
- Adriana Castillo
- Department of Basic Sciences, Genetics Laboratory, Industrial University of Santander, 680002, Bucaramanga, Colombia
| | - Fernando Rondón
- Department of Basic Sciences, Genetics Laboratory, Industrial University of Santander, 680002, Bucaramanga, Colombia
| | - Gerardo Mantilla
- Department of Basic Sciences, Genetics Laboratory, Industrial University of Santander, 680002, Bucaramanga, Colombia
| | - Leonor Gusmão
- DNA Diagnostic Laboratory, Institute of Biology Roberto Alcantara Gomes, State University of Rio de Janeiro, 20550-900, Rio de Janeiro, Brazil
| | - Filipa Simão
- DNA Diagnostic Laboratory, Institute of Biology Roberto Alcantara Gomes, State University of Rio de Janeiro, 20550-900, Rio de Janeiro, Brazil
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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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Simão F, Castillo A, Burgos G, Gusmão L. Sample collection strategies when building mitochondrial DNA forensic databases. FORENSIC SCIENCE INTERNATIONAL GENETICS SUPPLEMENT SERIES 2022. [DOI: 10.1016/j.fsigss.2022.09.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Feng Y, Zhang H, Wang Q, Jin X, Le C, Liu Y, Wang X, Jiang H, Ren Z. Whole mitochondrial genome analysis of Tai-Kadai-speaking populations in Southwest China. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.1000493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
As a single matrilineal gene, human mitochondrial DNA plays a very important role in the study of population genetics. The whole mitogenome sequences of 287 individuals of the Tai-Kadai-speaking population in Guizhou were obtained. It was discovered that there were 82, 104, and 94 haplotypes in 83 Bouyei individuals, 107 Dong individuals, and 97 Sui individuals, respectively; and the haplotype diversity in Bouyei, Dong, and Sui groups was 1.000 ± 0.02, 0.9993 ± 0.0015, and 0.999 ± 0.002, respectively. The result of neutrality tests of the Tai-Kadai-speaking population in Guizhou showed significant negative values, and the analysis of mismatch distribution showed an obvious unimodal distribution. The results implied that Guizhou Tai-Kadai-speaking populations had high genetic diversities and may have experienced recent population expansion. In addition, the primary haplogroups of studied populations were M*, F, B, D, and R*, implying that they may origin from Southern China. The matrilineal genetic structure of the Tai-Kadai-speaking populations in Guizhou was analyzed by merging the mitogenome data of 79 worldwide populations as reference data. The results showed that there were close relationships between studied populations and other Tai-Kadai as well as some Austronesian populations in East and Southeast Asia. Overall, the mitogenome data generated in this study will provide important data for the study of genetic structure of Tai-Kadai speaking populations.
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Simão F, Ribeiro J, Vullo C, Catelli L, Gomes V, Xavier C, Huber G, Bodner M, Quiroz A, Ferreira AP, Carvalho EF, Parson W, Gusmão L. The Ancestry of Eastern Paraguay: A Typical South American Profile with a Unique Pattern of Admixture. Genes (Basel) 2021; 12:1788. [PMID: 34828394 PMCID: PMC8625094 DOI: 10.3390/genes12111788] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/25/2021] [Accepted: 11/09/2021] [Indexed: 11/17/2022] Open
Abstract
Immigrants from diverse origins have arrived in Paraguay and produced important demographic changes in a territory initially inhabited by indigenous Guarani. Few studies have been performed to estimate the proportion of Native ancestry that is still preserved in Paraguay and the role of females and males in admixture processes. Therefore, 548 individuals from eastern Paraguay were genotyped for three marker sets: mtDNA, Y-SNPs and autosomal AIM-InDels. A genetic homogeneity was found between departments for each set of markers, supported by the demographic data collected, which showed that only 43% of the individuals have the same birthplace as their parents. The results show a sex-biased intermarriage, with higher maternal than paternal Native American ancestry. Within the native mtDNA lineages in Paraguay (87.2% of the total), most haplogroups have a broad distribution across the subcontinent, and only few are concentrated around the Paraná River basin. The frequency distribution of the European paternal lineages in Paraguay (92.2% of the total) showed a major contribution from the Iberian region. In addition to the remaining legacy of the colonial period, the joint analysis of the different types of markers included in this study revealed the impact of post-war migrations on the current genetic background of Paraguay.
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Affiliation(s)
- Filipa Simão
- DNA Diagnostic Laboratory, State University of Rio de Janeiro, Rio de Janeiro 20550-013, Brazil; (F.S.); (J.R.); (A.P.F.); (E.F.C.)
| | - Julyana Ribeiro
- DNA Diagnostic Laboratory, State University of Rio de Janeiro, Rio de Janeiro 20550-013, Brazil; (F.S.); (J.R.); (A.P.F.); (E.F.C.)
| | - Carlos Vullo
- DNA Forensic Laboratory, Argentinean Forensic Anthropology Team, Córdoba 14001, Argentina; (C.V.); (L.C.)
| | - Laura Catelli
- DNA Forensic Laboratory, Argentinean Forensic Anthropology Team, Córdoba 14001, Argentina; (C.V.); (L.C.)
| | - Verónica Gomes
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4099-002 Porto, Portugal;
- Institute of Pathology and Molecular Immunology, University of Porto (IPATIMUP), 4099-002 Porto, Portugal
| | - Catarina Xavier
- Institute of Legal Medicine, Medical University of Innsbruck, 6020 Innsbruck, Austria; (C.X.); (G.H.); (M.B.)
| | - Gabriela Huber
- Institute of Legal Medicine, Medical University of Innsbruck, 6020 Innsbruck, Austria; (C.X.); (G.H.); (M.B.)
| | - Martin Bodner
- Institute of Legal Medicine, Medical University of Innsbruck, 6020 Innsbruck, Austria; (C.X.); (G.H.); (M.B.)
| | - Alfredo Quiroz
- Instituto de Previsión Social, Asunción 100153, Paraguay;
| | - Ana Paula Ferreira
- DNA Diagnostic Laboratory, State University of Rio de Janeiro, Rio de Janeiro 20550-013, Brazil; (F.S.); (J.R.); (A.P.F.); (E.F.C.)
| | - Elizeu F. Carvalho
- DNA Diagnostic Laboratory, State University of Rio de Janeiro, Rio de Janeiro 20550-013, Brazil; (F.S.); (J.R.); (A.P.F.); (E.F.C.)
| | - Walther Parson
- Institute of Legal Medicine, Medical University of Innsbruck, 6020 Innsbruck, Austria; (C.X.); (G.H.); (M.B.)
- Forensic Science Program, The Pennsylvania State University, State College, PA 16801, USA
| | - Leonor Gusmão
- DNA Diagnostic Laboratory, State University of Rio de Janeiro, Rio de Janeiro 20550-013, Brazil; (F.S.); (J.R.); (A.P.F.); (E.F.C.)
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Di Corcia T, Scano G, Martínez-Labarga C, Sarno S, De Fanti S, Luiselli D, Rickards O. Uniparental Lineages from the Oldest Indigenous Population of Ecuador: The Tsachilas. Genes (Basel) 2021; 12:genes12081273. [PMID: 34440446 PMCID: PMC8391833 DOI: 10.3390/genes12081273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/12/2021] [Accepted: 08/16/2021] [Indexed: 12/02/2022] Open
Abstract
Together with Cayapas, the Tsachilas constitute the oldest population in the country of Ecuador and, according to some historians, they are the last descendants of the ancient Yumbos. Several anthropological issues underlie the interest towards this peculiar population: the uncertainty of their origin, their belonging to the Barbacoan linguistic family, which is still at the center of an intense linguistic debate, and the relations of their Yumbo ancestors with the Inca invaders who occupied their ancient territory. Our contribution to the knowledge of their complex past was the reconstruction of their genetic maternal and paternal inheritance through the sequencing of 70 entire mitochondrial genomes and the characterization of the non-recombinant region of the Y chromosome in 26 males. For both markers, we built comprehensive datasets of various populations from the surrounding geographical area, northwestern South America, NW, with a known linguistic affiliation, and we could then compare our sample against the overall variability to infer relationships with other Barbacoan people and with other NW natives. We found contrasting patterns of genetic diversity for the two markers, but generally, our results indicated a possible common origin between the Tsachilas, the Chachi, and other Ecuadorian and Colombian Barbacoans and are suggestive of an interesting ancient linkage to the Inca invaders in Yumbo country.
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Affiliation(s)
- Tullia Di Corcia
- Department of Biology, University of Rome “Tor Vergata”, Via della Ricerca Scientifica n. 1, 00173 Rome, Italy; (C.M.-L.); (O.R.)
- Correspondence: (T.D.C.); (G.S.)
| | - Giuseppina Scano
- Department of Biology, University of Rome “Tor Vergata”, Via della Ricerca Scientifica n. 1, 00173 Rome, Italy; (C.M.-L.); (O.R.)
- Correspondence: (T.D.C.); (G.S.)
| | - Cristina Martínez-Labarga
- Department of Biology, University of Rome “Tor Vergata”, Via della Ricerca Scientifica n. 1, 00173 Rome, Italy; (C.M.-L.); (O.R.)
| | - Stefania Sarno
- Department of Biological, Geological and Environmental Sciences, University of Bologna, 40126 Bologna, Italy; (S.S.); (S.D.F.)
| | - Sara De Fanti
- Department of Biological, Geological and Environmental Sciences, University of Bologna, 40126 Bologna, Italy; (S.S.); (S.D.F.)
- Interdepartmental Centre Alma Mater Research Institute on Global Challenges and Climate Change, University of Bologna, 40126 Bologna, Italy
| | - Donata Luiselli
- Department of Cultural Heritage (DBC), University of Bologna, Via degli Ariani, 1, 40121 Ravenna, Italy;
| | - Olga Rickards
- Department of Biology, University of Rome “Tor Vergata”, Via della Ricerca Scientifica n. 1, 00173 Rome, Italy; (C.M.-L.); (O.R.)
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Rimachi Hidalgo MA, Cirelli T, da Silva BR, Nicchio IG, Nepomuceno R, Orrico SRP, Cirelli JA, Theodoro LH, Barros SP, Scarel-Caminaga RM. Polymorphisms and haplotypes in the Interleukin 17 Alfa gene: potential effect of smoking habits in the association with periodontitis and type 2 diabetes mellitus. Mol Biol Rep 2021; 48:1103-1114. [PMID: 33559820 DOI: 10.1007/s11033-021-06172-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 01/19/2021] [Indexed: 11/26/2022]
Abstract
Few studies evaluate interrelationships between periodontitis (P) and Type 2 Diabetes Mellitus (T2DM). The aim of this study is to investigate the genetic susceptibility to periodontitis alone, or concomitant with T2DM (as comorbidities), analyzing single nucleotide polymorphisms (SNPs) in the Interleukin 17 alpha (IL17A) gene, considering the biochemical profile and smoking habits on the subjects' periodontal status. We investigated 879 individuals divided into: T2DM subjects also affected by severe or moderate periodontitis (T2DM-P, n = 199); non-diabetics with severe or moderate periodontitis (PERIODONTITIS, n = 342); and healthy subjects (HEALTHY, n = 338). Subjects underwent complete periodontal examination, history of smoking habits, glycemic and lipid biochemical evaluation. DNA from buccal cells was utilized to genotype the SNPs rs2275913, rs3819024 and rs10484879. The impact of the subjects' biochemical profile was analyzed in their periodontal status. Each SNP was analyzed independently, and as haplotypes, by multiple logistic regressions, adjusted for covariates, and also stratifying the groups by age, sex and smoking habits. Independently of the periodontitis degree, poorly-controlled T2DM subjects showed worse glycemic and lipid profile. Multiple logistic regressions demonstrated that smokers and former-smokers carrying the GG genotype of rs3819024 seemed to have higher risk for T2DM-Periodontitis (OR = 6.33; 95% CI = 1.26-31.77, p = 0.02), and mainly for T2DM alone (OR = 5.11; 95% CI = 1.37-19.06, p = 0.01), than never smokers. We found the potential effect of smoking habits in the association of IL17A-rs3819024-GG with diseased phenotypes. Because the observed wide confidence intervals, further studies enrolling larger populations, and SNPs' functional evaluations are needed to better understand our findings.
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Affiliation(s)
- Marco A Rimachi Hidalgo
- Department of Diagnosis and Surgery, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
- Department of Morphology and Pediatric Clinics, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
| | - Thamiris Cirelli
- Department of Diagnosis and Surgery, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
- Department of Morphology and Pediatric Clinics, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
| | - Bárbara Roque da Silva
- Department of Diagnosis and Surgery, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
- Department of Morphology and Pediatric Clinics, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
| | - Ingra Gagno Nicchio
- Department of Diagnosis and Surgery, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
- Department of Morphology and Pediatric Clinics, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
| | - Rafael Nepomuceno
- Department of Diagnosis and Surgery, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
- Department of Morphology and Pediatric Clinics, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
| | - Silvana R P Orrico
- Department of Diagnosis and Surgery, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
- Advanced Research Center in Medicine, Union of the Colleges of the Great Lakes (UNILAGO), São José do Rio Preto, SP, 15030-070, Brazil
| | - Joni A Cirelli
- Department of Diagnosis and Surgery, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil
| | - Letícia Helena Theodoro
- Department of Diagnosis and Surgery, São Paulo State University - UNESP, School of Dentistry at Araçatuba, Araçatuba, SP, Brazil
| | - Silvana P Barros
- Department of Periodontology, University of North Carolina at Chapel Hill - UNC, School of Dentistry, Chapel Hill, NC, USA
| | - Raquel M Scarel-Caminaga
- Department of Morphology and Pediatric Clinics, São Paulo State University - UNESP, School of Dentistry at Araraquara, Araraquara, SP, Brazil.
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10
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Searching for the roots of the first free African American community. Sci Rep 2020; 10:20634. [PMID: 33244039 PMCID: PMC7691995 DOI: 10.1038/s41598-020-77608-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 11/13/2020] [Indexed: 11/30/2022] Open
Abstract
San Basilio de Palenque is an Afro-descendant community near Cartagena, Colombia, founded in the sixteenth century. The recognition of the historical and cultural importance of Palenque has promoted several studies, namely concerning the African roots of its first inhabitants. To deepen the knowledge of the origin and diversity of the Palenque parental lineages, we analysed a sample of 81 individuals for the entire mtDNA Control Region as well as 92 individuals for 27 Y-STRs and 95 for 51 Y-SNPs. The results confirmed the strong isolation of the Palenque, with some degree of influx of Native American maternal lineages, and a European admixture exclusively mediated by men. Due to the high genetic drift observed, a pairwise FST analysis with available data on African populations proved to be inadequate for determining population affinities. In contrast, when a phylogenetic approach was used, it was possible to infer the phylogeographic origin of some lineages in Palenque. Contradicting previous studies indicating a single African origin, our results evidence parental genetic contributions from widely different African regions.
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Pereira V, Santangelo R, Børsting C, Tvedebrink T, Almeida APF, Carvalho EF, Morling N, Gusmão L. Evaluation of the Precision of Ancestry Inferences in South American Admixed Populations. Front Genet 2020; 11:966. [PMID: 32973885 PMCID: PMC7472784 DOI: 10.3389/fgene.2020.00966] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 07/31/2020] [Indexed: 11/13/2022] Open
Abstract
Ancestry informative markers (AIMs) are used in forensic genetics to infer biogeographical ancestry (BGA) of individuals and may also have a prominent role in future police and identification investigations. In the last few years, many studies have been published reporting new AIM sets. These sets include markers (usually around 100 or less) selected with different purposes and different population resolutions. Regardless of the ability of these sets to separate populations from different continents or regions, the uncertainty associated with the estimates provided by these panels and their capacity to accurately report the different ancestral contributions in individuals of admixed populations has rarely been investigated. This issue is addressed in this study by evaluating different AIM sets. Ancestry inference was carried out in admixed South American populations, both at population and individual levels. The results of ancestry inferences using AIM sets with different numbers of markers among admixed reference populations were compared. To evaluate the performance of the different ancestry panels at the individual level, expected and observed estimates among families and their offspring were compared, considering that (1) the apportionment of ancestry in the offspring should be closer to the average ancestry of the parents, and (2) full siblings should present similar ancestry values. The results obtained illustrate the importance of having a good balance/compromise between not only the number of markers and their ability to differentiate ancestral populations, but also a balanced differentiation among reference groups, to obtain more precise values of genetic ancestry. This work also highlights the importance of estimating errors associated with the use of a limited number of markers. We demonstrate that although these errors have a moderate effect at the population level, they may have an important impact at the individual level. Considering that many AIM-sets are being described for inferences at the individual level and not at the population level, e.g., in association studies or the determination of a suspect's BGA, the results of this work point to the need of a more careful evaluation of the uncertainty associated with the ancestry estimates in admixed populations, when small AIM-sets are used.
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Affiliation(s)
- Vania Pereira
- Section of Forensic Genetics, Department of Forensic Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Roberta Santangelo
- Section of Forensic Genetics, Department of Forensic Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Claus Børsting
- Section of Forensic Genetics, Department of Forensic Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Torben Tvedebrink
- Department of Mathematical Sciences, Aalborg University, Aalborg, Denmark
| | - Ana Paula F Almeida
- DNA Diagnostic Laboratory, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Elizeu F Carvalho
- DNA Diagnostic Laboratory, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Niels Morling
- Section of Forensic Genetics, Department of Forensic Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Leonor Gusmão
- DNA Diagnostic Laboratory, State University of Rio de Janeiro, Rio de Janeiro, Brazil.,Instituto de Investigação e Inovação em Saúde, i3S, Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Porto, Portugal
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Ambrosio IB, Braganholi DF, Orlando LBM, Andrekenas NC, da Mota Pontes I, da Silva DA, Astolfi-Filho S, de Carvalho EF, Cicarelli RMB, Gusmão L. Mutational data and population profiling of 23 Y-STRs in three Brazilian populations. Forensic Sci Int Genet 2020; 48:102348. [PMID: 32707472 DOI: 10.1016/j.fsigen.2020.102348] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 06/22/2020] [Accepted: 06/26/2020] [Indexed: 11/18/2022]
Abstract
Y-chromosomal STRs are important markers in forensic genetics, due to some peculiar characteristics. The absence of recombination makes them a useful tool to infer kinship in complex cases involving distant paternal relatives, or to infer paternal bio-geographic ancestry. The presence of a single copy, being transmitted from father to son, allow tracing mutational events in Y-STRs without ambiguity. For the statistical interpretation of forensic evidences based on Y-STR profiles, it is necessary to have estimates on both mutation rates and haplotype frequencies. In this work, 407 father-son duos from São Paulo and Rio de Janeiro states and 204 unrelated individuals from Manaus were analyzed. Haplotype frequencies and mutation rates for the Y-STRs from the PowerPlex Y23 commercial kit were estimated. Thirty-six mutations were observed in 15 of the 22 Y-STRs analyzed, for an average mutation rate of 3.84 × 10-3 (95 % CI 2.69 × 10-3 to 5.32 × 10-3). All mutations in GAAA repeats occurred in alleles with 13 or more uninterrupted units. Mutations in GATA repeats were observed in alleles with 9-17 uninterrupted units. An analysis carried out in different father's age groups showed an increase of 2.48 times the mutation rate in the age group of 40-50 years, when compared to the 20-30 age group, in agreement with the described for autosomal STRs. A high haplotype diversity was found in the three Brazilian populations. Pairwise genetic distance analysis (FST) showed no significant differences between the three populations in this study, which were also close to populations with strong European influence. The highest distances among the Brazilian populations were with São Gabriel da Cachoeira, which has a high Native American ancestry.
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Affiliation(s)
- Isabela Brunelli Ambrosio
- Laboratório de Investigação de Paternidade, NAC - Faculdade de Ciências Farmacêuticas (FCFAr), Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), São Paulo, Brazil.
| | - Danilo Faustino Braganholi
- Laboratório de Investigação de Paternidade, NAC - Faculdade de Ciências Farmacêuticas (FCFAr), Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), São Paulo, Brazil
| | - Larissa Barros Muniz Orlando
- Laboratório de Genética Forense, do Instituto de Criminalística "Lorena do Santos Baptista" da Polícia Civil do Estado do Amazonas, Manaus, AM, Brazil
| | - Natalia Carolina Andrekenas
- Laboratório de Investigação de Paternidade, NAC - Faculdade de Ciências Farmacêuticas (FCFAr), Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), São Paulo, Brazil
| | - Isabel da Mota Pontes
- Laboratório de Diagnóstico Molecular, Universidade Federal do Amazonas/UFAM, Manaus, AM, Brazil
| | - Dayse Aparecida da Silva
- DNA Diagnostic Laboratory (LDD), State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
| | - Spartaco Astolfi-Filho
- Laboratório de Diagnóstico Molecular, Universidade Federal do Amazonas/UFAM, Manaus, AM, Brazil
| | | | - Regina Maria Barretto Cicarelli
- Laboratório de Investigação de Paternidade, NAC - Faculdade de Ciências Farmacêuticas (FCFAr), Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), São Paulo, Brazil
| | - Leonor Gusmão
- DNA Diagnostic Laboratory (LDD), State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
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Mengge W, Guanglin H, Yongdong S, Shouyu W, Xing Z, Jing L, Zheng W, Hou Y. Massively parallel sequencing of mitogenome sequences reveals the forensic features and maternal diversity of tai-kadai-speaking hlai islanders. Forensic Sci Int Genet 2020; 47:102303. [PMID: 32361554 DOI: 10.1016/j.fsigen.2020.102303] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 03/30/2020] [Accepted: 04/16/2020] [Indexed: 12/11/2022]
Abstract
As a single maternally inherited locus, human mitochondrial DNA (mtDNA) is geographically arranged and plays a key role in forensic applications. Hlai population has been evidenced as the most typical and unmixed representative of the Tai-Kadai-speaking populations via genome-wide analyses. However, forensic features and maternal diversity of the complete mitogenomes in this Tai-Kadai ancestrally related population are scarce. Thus, we sequenced the complete mitogenomes in 127 Hainan Hlais and found 109 distinct haplotypes belonging to 43 terminal haplogroups resulting in the haplotype diversity of 0.9970. Our results of comprehensive population comparisons showed that Hlai islanders had a close genetic affinity with Tai-Kadai-speaking populations from Southeast Asia, which is consistent with the back-migration of Chinese Neolithic farmers into this region via the inland route. Besides, maternally genetic evidence further revealed a close genetic relationship between Tai-Kadai-speaking and Austronesian-speaking populations when only East Asian dataset was considered, which is consistent with the common origin from Yangtze rice farmers and then spread southward along the inland and coastal routes, respectively. In the reconstructed phylogenetic tree and median-joining networks, the vast majority of Hlais were clustered in exclusive clades, which demonstrated that Hlai people probably had undergone founder effect or genetic bottleneck in their history, and remained genetically isolated for a long time. Collectively, Hainan Hlai did not exhibit detectable maternal gene flow from surrounding or incoming populations. Mitogenome information generated in this study is a contribution in mitigating the underrepresentation of Chinese data in forensic mitogenetics and will assist geography-, metapopulation-, as well as phylogeny-based queries.
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Affiliation(s)
- Wang Mengge
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu 610041, China
| | - He Guanglin
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu 610041, China
| | - Su Yongdong
- Forensic Identification Center, Public Security Bureau of Tibet Tibetan Autonomous Region, Lhasa, Tibet Tibetan Autonomous Region, 850000, China
| | - Wang Shouyu
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu 610041, China
| | - Zou Xing
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu 610041, China
| | - Liu Jing
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu 610041, China
| | - Wang Zheng
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu 610041, China.
| | - Yiping Hou
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu 610041, China.
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Burgos G, Simão F, Flores-Espinoza R, Yepez-Santos J, Garzón-Salazar A, Paz-Cruz E, Freire-Paspuel B, Carvalho E, Gusmão L. An approach to maternal ancestry in a sample of Ecuadorian “mestizo” population by sequencing the control region of mtDNA. FORENSIC SCIENCE INTERNATIONAL GENETICS SUPPLEMENT SERIES 2019. [DOI: 10.1016/j.fsigss.2019.10.081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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15
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The maternal inheritance of the Ashaninka native group from Peru. FORENSIC SCIENCE INTERNATIONAL GENETICS SUPPLEMENT SERIES 2019. [DOI: 10.1016/j.fsigss.2019.09.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Martins S, Simão F, Pinheiro L, Nguidi M, Deccache L, Gusmão L, Carvalho E. Genetic characterization and ancestry of the admixed population of Marajó Island, northern of Brazil, with autosomal and lineage markers. FORENSIC SCIENCE INTERNATIONAL GENETICS SUPPLEMENT SERIES 2019. [DOI: 10.1016/j.fsigss.2019.09.118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Martínez B, Nguidi M, Catelli L, Vullo C, Okolie V, Keshinro S, Carvalho E, Gusmão L, Simão F. Mitochondrial genetic profile of the Yoruba population from Nigeria. FORENSIC SCIENCE INTERNATIONAL GENETICS SUPPLEMENT SERIES 2019. [DOI: 10.1016/j.fsigss.2019.10.185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Wang M, Wang Z, He G, Wang S, Zou X, Liu J, Wang F, Ye Z, Hou Y. Whole mitochondrial genome analysis of highland Tibetan ethnicity using massively parallel sequencing. Forensic Sci Int Genet 2019; 44:102197. [PMID: 31756629 DOI: 10.1016/j.fsigen.2019.102197] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 10/29/2019] [Accepted: 10/30/2019] [Indexed: 01/12/2023]
Abstract
Mitochondrial DNA (mtDNA) is a key player in numerous multifaceted and intricate biological processes and plays a pivotal role in dissecting the peopling of different populations, due to its maternally inherited property and comparatively high mutation rate. In this study, 119 Tibetan individuals from the Muli Tibetan Autonomous County of China (average altitude above 3,000 m) were employed in mitochondrial genome (mitogenome) sequencing by massively parallel sequencing (MPS) techniques using the Precision ID mtDNA Whole Genome Panel on an Ion S5XL system. The dataset presented 88 distinct haplotypes, resulting in the haplotype diversity of 0.9909. The majority of haplotypes were assigned to East Asian lineages and the distribution of haplogroups of Muli Tibetan significantly differed from reference Tibetan populations. The maximum parsimony phylogeny reconstructed by 119 newly generated mitogenomes revealed 12 major Muli Tibetan lineages. Intriguingly, a Sherpa-specific sub-haplogroup A15c1 with the lack of mutations at 4216 and 15,924 was discerned in our dataset, which suggested that the maternal gene pool of Sherpas may derive from Tibetan populations. The shared haplogroups between Muli Tibetan and lowland Han Chinese hinted that these lineages may derive from non-Tibetans and have already differentiated before their arrival on the Tibetan Plateau. Furthermore, extensive pairwise population comparisons displayed that Muli Tibetan had a closer genetic relationship with ethnically or linguistically close Nyingtri Tibetan, Nyingtri Lhoba and Chamdo Tibetan populations. Genetic affinity was also observed between the Muli Tibetan and North Han Chinese. Collectively, the results generated in this study enriched the existing forensic mtDNA database and raised additional interest in the application of whole mitogenome sequencing in forensic investigations.
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Affiliation(s)
- Mengge Wang
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu, 610041, China
| | - Zheng Wang
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu, 610041, China
| | - Guanglin He
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu, 610041, China
| | - Shouyu Wang
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu, 610041, China
| | - Xing Zou
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu, 610041, China
| | - Jing Liu
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu, 610041, China
| | - Fei Wang
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu, 610041, China
| | - Ziwei Ye
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu, 610041, China
| | - Yiping Hou
- Institute of Forensic Medicine, West China School of Basic Science & Forensic Medicine, Sichuan University, Chengdu, 610041, China.
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dos Reis RS, Simão F, dos Santos Stange V, Garcia FM, Spinassé Dettogni R, Stur E, da Silva AMÁ, de Carvalho EF, Gusmão L, Drumond Louro I. A view of the maternal inheritance of Espírito Santo populations: The contrast between the admixed and Pomeranian descent groups. Forensic Sci Int Genet 2019; 40:175-181. [DOI: 10.1016/j.fsigen.2019.03.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 02/22/2019] [Accepted: 03/05/2019] [Indexed: 11/28/2022]
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20
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Mitochondrial DNA control region haplotypes and haplogroup diversity in a sample from Brasília, Federal District, Brazil. Forensic Sci Int Genet 2019; 40:e228-e230. [PMID: 30803879 DOI: 10.1016/j.fsigen.2019.02.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 01/07/2019] [Accepted: 02/06/2019] [Indexed: 11/22/2022]
Abstract
Brazilians form one of the most heterogeneous populations in the world, as the result of five centuries of miscegenation between its native populations with migrants from Europe, Africa and Asia. The present study intended to characterize the frequencies of mtDNA haplotypes in a dataset of 306 individuals from Brasília, Federal District of Brazil. Brasília was built from scratch in the late 1950s and its construction attracted migrants from different regions of Brazil, mostly from Central-West, Northeast and Southeast regions. Due to its formation, its population is admixed. The goal of this study was to collect mtDNA population data and contribute to databases for a better use of mtDNA for forensic purposes. The haplotypes are available at EMPOP website under accession number EMP00695.
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