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[PMID]:28467628
[Au] Autor:Couoh LR
[Ad] Endereço:Postgraduate Division, Faculty of Philosophy and Literature, Institute of Anthropological Research, The National Autonomous University of Mexico [UNAM], Coyoacán, Mexico city, 04510, Mexico.
[Ti] Título:Differences between biological and chronological age-at-death in human skeletal remains: A change of perspective.
[So] Source:Am J Phys Anthropol;163(4):671-695, 2017 08.
[Is] ISSN:1096-8644
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVES: This analysis seeks to determine whether differences between real and estimated chronological age (CA) with biological age (BA) in skeletal individuals reflect variability in aging. MATERIAL AND METHODS: A total of 87 individuals of two samples, ranging from 20 to 94 years old, were analyzed. One, partially documented, belongs to a Mexican skeletal collection dating to the 20th century; the other is an assemblage of prehispanic individuals from different archaeological sites. In all specimens, the tooth annulation method (TCA) was applied to estimate CA, while-excluding individuals older than 80 years-auricular surface (AS) and pubic symphysis (PS) methods were used to estimate BA. Statistical analyses were conducted to identify correlations and significance of the differences between CA vs. TCA, CA vs. AS/PS, TCA vs. AS/PS. Sex of individuals was assessed for its influence in aging. RESULTS: The use of TCA to estimate CA was successful for most individuals. A strong correlation was found between CA vs. TCA, CA vs. AS/PS, TCA vs. AS/PS and their differences were significant but variation in these were found when assessed by separate age groups. Sex did not influence such differences. DISCUSSION: TCA can be used to estimate CA and its differences with BA, being less than 10 years, are similar to those found in living populations. Differences between CA and BA are due to intra-population variability, which could be the consequence of individual differences in aging. More research is needed to have confidence that under- and overestimations of BA are indicators of aging variability at the level of the individual.
[Mh] Termos MeSH primário: Determinação da Idade pelo Esqueleto/métodos
Determinação da Idade pelos Dentes/métodos
Envelhecimento/fisiologia
[Mh] Termos MeSH secundário: Adulto
Idoso
Idoso de 80 Anos ou mais
Antropologia Física
Cemento Dentário/fisiologia
Feminino
Seres Humanos
Índios Centro-Americanos
Masculino
México
Meia-Idade
Modelos Estatísticos
Raiz Dentária/fisiologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1708
[Cu] Atualização por classe:180214
[Lr] Data última revisão:
180214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170504
[St] Status:MEDLINE
[do] DOI:10.1002/ajpa.23236


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[PMID]:28880302
[Au] Autor:Callaway E
[Ti] Título:Skeleton plundered from Mexican cave was one of the Americas' oldest.
[So] Source:Nature;549(7670):14-15, 2017 08 30.
[Is] ISSN:1476-4687
[Cp] País de publicação:England
[La] Idioma:eng
[Mh] Termos MeSH primário: Carbonato de Cálcio/química
Cavernas
Datação Radiométrica/métodos
Esqueleto
Roubo
[Mh] Termos MeSH secundário: Arqueologia/métodos
DNA Antigo/análise
DNA Antigo/isolamento & purificação
Seres Humanos
Índios Centro-Americanos
Índios Norte-Americanos
Masculino
México
Montana
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Ancient); H0G9379FGK (Calcium Carbonate)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170915
[Lr] Data última revisão:
170915
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170908
[St] Status:MEDLINE
[do] DOI:10.1038/nature.2017.22521


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[PMID]:28424260
[Au] Autor:Hambidge KM; Miller LV; Mazariegos M; Westcott J; Solomons NW; Raboy V; Kemp JF; Das A; Goco N; Hartwell T; Wright L; Krebs NF
[Ad] Endereço:Section of Nutrition, Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO; michael.hambidge@ucdenver.edu.
[Ti] Título:Upregulation of Zinc Absorption Matches Increases in Physiologic Requirements for Zinc in Women Consuming High- or Moderate-Phytate Diets during Late Pregnancy and Early Lactation.
[So] Source:J Nutr;147(6):1079-1085, 2017 Jun.
[Is] ISSN:1541-6100
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Estimated physiologic requirements (PRs) for zinc increase in late pregnancy and early lactation, but the effect on dietary zinc requirements is uncertain. The aim of this study was to determine changes in daily fractional absorbed zinc and total absorbed zinc (TAZ) from ad libitum diets of differing phytate contents in relation to physiologic zinc requirements during pregnancy and lactation. This was a prospective observational study of zinc absorption at 8 (phase 1) and 34 (phase 2) wk of gestation and 2 (phase 3) and 6 (phase 4) mo of lactation. Participants were indigenous Guatemalan women of childbearing age whose major food staple was maize and who had been randomly assigned in a larger study to either of 2 ad libitum feeding groups: low-phytate maize (LP; 1.6 mg/g; = 14) or control maize (C; 7.1 mg/g; = 8). Total dietary zinc (milligrams per day, TDZ) and phytate (milligrams per day) were determined from duplicate diets and fractional absorption (FAZ) by dual isotope ratio technique (TAZ = TDZ × FAZ). All variables were examined longitudinally and by group and compared with PRs. TAZ values at later phases were compared with phase 1. Measured TAZ was compared with predicted TAZ for nonpregnant, nonlactating (NPNL) women. TAZ was greater in the LP group than in the C group at all phases. All variables increased from phase 1 to phases 2 and 3 and declined at phase 4. TAZ increased by 1.25 mg/d ( = 0.045) in the C group and by 0.81 mg/d ( = 0.058) in the LP group at phase 2. At phase 3, the increases were 2.66 mg/d ( = 0.002) in the C group and 2.28 mg/d ( = 0.0004) in the LP group, compared with a 1.37-mg/d increase in PR. Measured TAZ was greater than predicted values in phases 2-4. Upregulation of zinc absorption in late pregnancy and early lactation matches increases in PRs of pregnant and lactating women, regardless of dietary phytate, which has implications for dietary zinc requirements of pregnant and lactating women.
[Mh] Termos MeSH primário: Dieta
Idade Gestacional
Absorção Intestinal
Lactação
Necessidades Nutricionais
Ácido Fítico/administração & dosagem
Zinco/metabolismo
[Mh] Termos MeSH secundário: Adulto
Disponibilidade Biológica
Método Duplo-Cego
Feminino
Guatemala
Seres Humanos
Índios Centro-Americanos
Lactação/fisiologia
Estudos Longitudinais
Estado Nutricional
Ácido Fítico/efeitos adversos
Gravidez
Complicações na Gravidez
Terceiro Trimestre da Gravidez
Estudos Prospectivos
Regulação para Cima
Zea mays/química
Zinco/deficiência
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
7IGF0S7R8I (Phytic Acid); J41CSQ7QDS (Zinc)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170705
[Lr] Data última revisão:
170705
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170421
[St] Status:MEDLINE
[do] DOI:10.3945/jn.116.245902


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[PMID]:28382719
[Au] Autor:Morales-Arce AY; Snow MH; Kelley JH; Anne Katzenberg M
[Ad] Endereço:Department of Anthropology and Archaeology, University of Calgary, Calgary, Alberta, Canada, T2N 1N4.
[Ti] Título:Ancient mitochondrial DNA and ancestry of Paquimé inhabitants, Casas Grandes (A.D. 1200-1450).
[So] Source:Am J Phys Anthropol;163(3):616-626, 2017 Jul.
[Is] ISSN:1096-8644
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVES: The Casas Grandes (Paquimé) culture, located in the Northwest of Chihuahua, Mexico reached its apogee during the Medio Period (A.D. 1200-1450). Paquimé was abandoned by the end of the Medio Period (A.D. 1450), and the ancestry of its inhabitants remains unsolved. Some authors suggest that waves of Mesoamerican immigrants, possibly merchants, stimulated Paquimé's development during the Medio Period. Archaeological evidence suggests possible ties to groups that inhabited the Southwestern US cultures. This study uses ancient DNA analysis from fourteen samples to estimate genetic affinities of ancient Paquimé inhabitants. MATERIALS AND METHODS: DNA was extracted from 14 dental ancient samples from Paquimé. PCR and Sanger sequencing were used to obtain mitochondrial control region sequences. Networks, PCoA, and Nei genetic distances were estimated to compare Paquimé haplotypes against available past haplotypes data from Southwestern and Mesoamerican groups. RESULTS: Haplogroups were characterized for 11 of the samples, and the results revealed the presence of four distinct Amerindian mitochondrial lineages: B (n = 5; 45%), A (n = 3; 27%), C (n = 2; 18%) and D (n = 1; 10%). Statistical analysis of the haplotypes, haplogroup frequencies, and Nei genetic distances showed close affinity of Paquimé with Mimbres. DISCUSSION: Although our results provide strong evidence of genetic affinities between Paquimé and Mimbres, with the majority of haplotypes shared or derived from ancient Southwest populations, the causes of cultural development at Paquimé still remain a question. These preliminary results provide evidence in support of other bioarchaeological studies, which have shown close biological affinities between Paquimé and Mimbres, a Puebloan culture, in the Southwestern US.
[Mh] Termos MeSH primário: DNA Antigo
DNA Mitocondrial
Índios Centro-Americanos/genética
[Mh] Termos MeSH secundário: Antropologia Física
DNA Antigo/análise
DNA Antigo/isolamento & purificação
DNA Mitocondrial/análise
DNA Mitocondrial/genética
DNA Mitocondrial/isolamento & purificação
Migração Humana
Seres Humanos
México
Dente/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Ancient); 0 (DNA, Mitochondrial)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170821
[Lr] Data última revisão:
170821
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170407
[St] Status:MEDLINE
[do] DOI:10.1002/ajpa.23223


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[PMID]:28362023
[Au] Autor:Espinosa-Sánchez M
[Ad] Endereço:Instituto de Investigaciones Antropológicas, Universidad Nacional Autónoma de México, Ave. Universidad 3000, Ciudad Universitaria, Coyoacán, Ciudad de México, 04510, México matilde@unam.mx.
[Ti] Título:Kinematic study of standing long jump in preadolescents before the occurrence of maximum growth age.
[So] Source:Anthropol Anz;74(1):39-44, 2017 Apr 01.
[Is] ISSN:0003-5548
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:ABSTRACT: The aims of this study were to identify the kinematics characteristics of the standing long jump (SLJ) performance in groups of Mexican girls and boys, with a chronological age such that theoretically, corresponds to the age before the occurrence of the maximum growth. The jump distance is largely dependent on the kinematic values at the time of takeoff. A calculation method was used from video recordings of the sagittal projection of jumps. The location of the body mass center at takeoff was the source for measuring the kinematic values. The Mann-Whitney U non-parametric Test ( < 0.05) and a Z-scores analysis were applied to assess differences between the groups. Almost the 60% of all the participants are within the range that is considered as average BMI and stature, according to the WHO growing standard values. In the sample, boys are bigger, probably stronger and jump longer than girls. Although the statistical tests show there are some similarities, mainly in the older groups, it is not possible to conclude that girls and boys in the sample have an equally performance in the Standing Long Jump.
[Mh] Termos MeSH primário: Fenômenos Biomecânicos/fisiologia
Desenvolvimento Infantil/fisiologia
Índios Centro-Americanos/estatística & dados numéricos
Atividade Motora/fisiologia
[Mh] Termos MeSH secundário: Antropologia Física
Estatura/fisiologia
Criança
Feminino
Seres Humanos
Masculino
México/epidemiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170914
[Lr] Data última revisão:
170914
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170401
[St] Status:MEDLINE
[do] DOI:10.1127/anthranz/2017/0668


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[PMID]:28109304
[Au] Autor:García-López R; Villegas A; Pacheco-Coronel N; Gómez-Álvarez G
[Ad] Endereço:Laboratorio de Vertebrados, Facultad de Ciencias, Universidad Nacional Autónoma de México, C.P. 04510, Ciudad de México, Mexico.
[Ti] Título:Traditional use and perception of snakes by the Nahuas from Cuetzalan del Progreso, Puebla, Mexico.
[So] Source:J Ethnobiol Ethnomed;13(1):6, 2017 Jan 21.
[Is] ISSN:1746-4269
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Indigenous cultures are the result of their adaptation to the natural surroundings, in such a way that, amongst their main features is a set of knowledge, technologies and strategies for the appropriation of nature. In Cuetzalan del Progreso, Puebla, Mexico snakes represent 71.1% of the total local herpetofauna; and in addition to this, different groups of Nahuas have shown to have information of their use of various snake species in many ways. This study was conducted to investigate the traditional uses of snakes in this cultural group. METHODS: Formal and informal interviews were conducted with the inhabitants of the communities. During these interviews, 30 images of the different species of snakes present in the area were presented to the subjects, so that they would recognize them and reveal information about the knowledge they possess on them. A usage analysis was applied to each species considering the following categories: food purposes, medicinal, artisanal and magical-religious. Likewise, the frequency, the diversity and the value of use was estimated for these snakes. RESULTS: A total of 51 interviews were carried out. The individuals recognized 18 out of 30 images of snakes that were presented. The total of usage categories was five; we found that the magic-religious use was the most mentioned by 32 personas. Boa imperator and Antropoides nummifer were the species with the highest value of use. More than half of the interviewees mentioned killing snakes because they're poisonous and aggressive. In the magic-religious aspect the "Danza de los Negritos" is highlighted; this is a local festival, brought by Africans, and alludes to snakes. CONCLUSIONS: This study revealed that snakes are still very important for the culture in Cuetzalan del Progreso, finding that the magical-religious and the medicinal use stand out. On the other hand, the fear and misperception on the toxicity of snakes might represent a potential threat for their conservation. Therefore, it is necessary to carry out a long-term monitoring of the ethno-zoological activities, and develop a sustainable management plan compatible with the cultural characteristics of the natives of the region.
[Mh] Termos MeSH primário: Índios Centro-Americanos/etnologia
Medicina Tradicional
Serpentes
[Mh] Termos MeSH secundário: Adolescente
Adulto
Idoso
Idoso de 80 Anos ou mais
Animais
Atitude
Boidae
Cultura
Feminino
Seres Humanos
Índios Centro-Americanos/psicologia
Entrevistas como Assunto
Masculino
México
Meia-Idade
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170920
[Lr] Data última revisão:
170920
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170123
[St] Status:MEDLINE
[do] DOI:10.1186/s13002-016-0134-7


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[PMID]:28009045
[Au] Autor:Little BB; Peña Reyes ME; Malina RM
[Ad] Endereço:Department of Health Management and Systems Sciences, School of Public Health and Information Sciences, and Department of Anthropology, University of Louisville, Louisville, Kentucky.
[Ti] Título:Natural selection and type 2 diabetes-associated mortality in an isolated indigenous community in the valley of Oaxaca, southern Mexico.
[So] Source:Am J Phys Anthropol;162(3):561-572, 2017 Mar.
[Is] ISSN:1096-8644
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: This study tests the hypothesis that natural selection is associated with type 2 diabetes (T2D)-associated mortality and fertility in a rural isolated Zapotec community in the Valley of Oaxaca, southern Mexico. PARTICIPANTS AND METHODS: Mortality data and related demographic and genealogic information were linked with data for fertility, prereproductive mortality and family history of mortality attributed to T2D. Physician verified T2D mortality (n = 27) between 1980 and 2009 and imputed T2D (n = 70) from cardiovascular mortality (68% random sample) and renal failure (44% random sample). Bootstrapping was used to obtain a robust variance estimate in survival analysis and multivariate analysis of variance. RESULTS: Estimated maximum natural selection by Crow's Index occurred circa 1930 and was relaxed after this time in the study population. Cox-regression survival analysis of T2D mortality with covariates (family history of T2D, cardiovascular disease, renal failure) indicated a significant hazard ratio (HR = 5.95, 95% CI: 1.38-25.67, p < .008) for the increase in T2D in 2000 to 2009. Survival analysis of imputed T2D resulted in a significant HR of 2.03 (95% CI: 1.08-3.85, p = .01) for the increase in T2D in the 2000 to 2009 cohort (reference group: 1980-1989). Mean number of live born offspring was lower among T2D (n = 27, 4.04 ± 3.85 SD) compared to non-T2D (n = 199, 5.30 ± 3.48) groups (p < .08). Mean number of live born offspring was lower (p = .003) among imputed T2D compared to non-T2D groups (4.10 ± 3.44 vs. 5.62 + 3.50). DISCUSSION: T2D-associated mortality increased in frequency as natural selection decreased, and favored offspring survival of non-T2D descedants. The results indicated statistically significant directional selection against T2D and imputed T2D to this population isolate.
[Mh] Termos MeSH primário: Diabetes Mellitus Tipo 2/etnologia
Diabetes Mellitus Tipo 2/mortalidade
Fertilidade/fisiologia
Índios Centro-Americanos/etnologia
Índios Centro-Americanos/estatística & dados numéricos
Seleção Genética
[Mh] Termos MeSH secundário: Adolescente
Adulto
Idoso
Idoso de 80 Anos ou mais
Feminino
Seres Humanos
Masculino
México/etnologia
Meia-Idade
População Rural
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170622
[Lr] Data última revisão:
170622
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161224
[St] Status:MEDLINE
[do] DOI:10.1002/ajpa.23139


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[PMID]:27808397
[Au] Autor:McKerracher LJ; Collard M; Altman RM; Sellen D; Nepomnaschy PA
[Ad] Endereço:Human Evolutionary Studies Program, Simon Fraser University, Burnaby, British Columbia, Canada, V5A 1S6.
[Ti] Título:Energy-related influences on variation in breastfeeding duration among indigenous Maya women from Guatemala.
[So] Source:Am J Phys Anthropol;162(4):616-626, 2017 Apr.
[Is] ISSN:1096-8644
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVES: The causes of variation in breastfeeding duration in humans are poorly understood, but life history factors related to maternal energetics drive much of the variation in lactation duration in nonhuman animals. With this in mind, we investigated whether four energy-related factors influence variation in breastfeeding duration in a non-industrial human population: (1) mortality risk during mother's development (assessed via mother's adult height), (2) reliance on nutrient-dense weaning foods, (3) access to and need for help with infant feeding and care ("allomaternal care"), and (4) maternal tradeoffs between current and future reproduction (measured via child's birth order). MATERIALS AND METHODS: The data pertain to 51 Kakchiquel-speaking Maya mothers and 283 children from a village in rural Guatemala. We developed a linear mixed model to evaluate the relationships between breastfeeding duration and the energy-related factors. RESULTS: Duration of breastfeeding was associated with two of the energy-related factors in the ways we predicted but not with the other two. Contrary to predictions, taller mothers breastfed for shorter periods and we found no evidence that weanling diet quality impacts breastfeeding duration. As predicted, women who had more help with infants breastfed for shorter periods, and later-born infants breastfed longer than earlier-born ones. DISCUSSION: The results regarding allomaternal care suggest that help reduces mothers' lactation demands. The energy saved may be redirected to increasing fecundity or investment in other children. The birth order result suggests that children born to mothers nearing reproductive senescence receive higher levels of investment, which likely impacts children's fitness.
[Mh] Termos MeSH primário: Aleitamento Materno/etnologia
Índios Centro-Americanos/etnologia
Desmame/etnologia
[Mh] Termos MeSH secundário: Antropologia Física
Estatura
Metabolismo Energético
Feminino
Guatemala/etnologia
Seres Humanos
População Rural
Fatores de Tempo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170620
[Lr] Data última revisão:
170620
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161104
[St] Status:MEDLINE
[do] DOI:10.1002/ajpa.23125


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[PMID]:28162001
[Au] Autor:Ochoa-Lugo MI; Muñoz ML; Pérez-Ramírez G; Beaty KG; López-Armenta M; Cervini-Silva J; Moreno-Galeana M; Meza AM; Ramos E; Crawford MH; Romano-Pacheco A
[Ad] Endereço:1 Department of Genetics and Molecular Biology, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, Mexico.
[Ti] Título:Genetic Affiliation of Pre-Hispanic and Contemporary Mayas Through Maternal Linage.
[So] Source:Hum Biol;88(2):136-167, 2016 Apr.
[Is] ISSN:1534-6617
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Maya civilization developed in Mesoamerica and encompassed the Yucatan Peninsula, Guatemala, Belize, part of the Mexican states of Tabasco and Chiapas, and the western parts of Honduras and El Salvador. This civilization persisted approximately 3,000 years and was one of the most advanced of its time, possessing the only known full writing system at the time, as well as art, sophisticated architecture, and mathematical and astronomical systems. This civilization reached the apex of its power and influence during the Preclassic period, from 2000 BCE to 250 CE. Genetic variation in the pre-Hispanic Mayas from archaeological sites in the Mexican states of Yucatan, Chiapas, Quintana Roo, and Tabasco and their relationship with the contemporary communities in these regions have not been previously studied. Consequently, the principal aim of this study was to determine mitochondrial DNA (mtDNA) variation in the pre-Hispanic Maya population and to assess the relationship of these individuals with contemporary Mesoamerican Maya and populations from Asia, Beringia, and North, Central, and South America. Our results revealed interactions and gene flow between populations in the different archaeological sites assessed in this study. The mtDNA haplogroup frequency in the pre-Hispanic Maya population (60.53%, 34.21%, and 5.26% for haplogroups A, C, and D, respectively) was similar to that of most Mexican and Guatemalan Maya populations, with haplogroup A exhibiting the highest frequency. Haplogroup B most likely arrived independently and mixed with populations carrying haplogroups A and C based on its absence in the pre-Hispanic Mexican Maya populations and low frequencies in most Mexican and Guatemalan Maya populations, although this also may be due to drift. Maya and Ciboneys sharing haplotype H10 belonged to haplogroup C1 and haplotype H4 of haplogroup D, suggesting shared regional haplotypes. This may indicate a shared genetic ancestry, suggesting more regional interaction between populations in the circum-Caribbean region than previously demonstrated. Haplotype sharing between the pre-Hispanic Maya and the indigenous populations from Asia, the Aleutian Islands, and North, Central, and South America provides evidence for gene flow from the ancestral Amerindian population of the pre-Hispanic Maya to Central and South America.
[Mh] Termos MeSH primário: DNA Mitocondrial/genética
Variação Genética
Índios Centro-Americanos/genética
[Mh] Termos MeSH secundário: Arqueologia
Evolução Molecular
Fluxo Gênico
Genética Populacional
Haplótipos
Seres Humanos
Filogeografia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Mitochondrial)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170207
[St] Status:MEDLINE


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[PMID]:28161995
[Au] Autor:Baldi NF; Crawford MH
[Ad] Endereço:1 School of Anthropology, University of Costa Rica, San Pedro de Montes de Oca, Costa Rica.
[Ti] Título:Population History and Mitochondrial Genetic Substructure of the Rama Amerindians from Nicaragua.
[So] Source:Hum Biol;88(2):168-181, 2016 Apr.
[Is] ISSN:1534-6617
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The Rama are a coastal population from southern Nicaragua who in large part were able to resist, at least for a time, the cultural changes and social reorganization brought on by colonial and modern influences. Historical information leaves the Rama origins and biological relationships with nearby extinct and extant groups ambiguous. The objective of this study was to examine the internal genetic microdifferentiation based on the first hypervariable region of the mitochondrial DNA (mtDNA) from a sample of approximately 20% of the population, and to expand the few available historical and anthropological data on the Rama by exploring the effects of cultural practices and historical events on genetic structure, providing an integrative perspective on the Rama genetic history. When considering differences in the spatial distribution and genetic diversity of the mtDNA haplotypes together with historical information on the Rama, a noteworthy pattern emerges. (a) Haplotypes are differentially distributed among a central Rama community (Punta Águila) compared with the other five peripheral communities (analysis of molecular variance: F = 0.10, p < 0.001), and their distribution is consistent with the historical relocation of this population after their split from Punta Gorda in the 18th century. (b) Differential genetic signatures found among central and peripheral Rama communities resemble two population histories: one of stability (haplogroup A2) and other of expansion (haplogroup B2), supporting the possibility that these patterns of genetic microdifferentiation between central and peripheral populations resulted from the 18th-century unification in southern Nicaragua of the Rama and a group of Voto migrants from Costa Rica that later split off and moved to the Bay of Bluefields.
[Mh] Termos MeSH primário: DNA Mitocondrial/genética
Índios Centro-Americanos/genética
[Mh] Termos MeSH secundário: Emigração e Imigração
Evolução Molecular
Variação Genética
Genética Populacional
Haplótipos
Seres Humanos
Nicarágua
Filogenia
Análise de Sequência de DNA
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Mitochondrial)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170207
[St] Status:MEDLINE



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