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1.
Cell ; 181(6): 1232-1245.e20, 2020 06 11.
Artigo em Inglês | MEDLINE | ID: mdl-32437661

RESUMO

Modern humans have inhabited the Lake Baikal region since the Upper Paleolithic, though the precise history of its peoples over this long time span is still largely unknown. Here, we report genome-wide data from 19 Upper Paleolithic to Early Bronze Age individuals from this Siberian region. An Upper Paleolithic genome shows a direct link with the First Americans by sharing the admixed ancestry that gave rise to all non-Arctic Native Americans. We also demonstrate the formation of Early Neolithic and Bronze Age Baikal populations as the result of prolonged admixture throughout the eighth to sixth millennium BP. Moreover, we detect genetic interactions with western Eurasian steppe populations and reconstruct Yersinia pestis genomes from two Early Bronze Age individuals without western Eurasian ancestry. Overall, our study demonstrates the most deeply divergent connection between Upper Paleolithic Siberians and the First Americans and reveals human and pathogen mobility across Eurasia during the Bronze Age.


Assuntos
Genoma Humano/genética , Migração Humana/história , Grupos Raciais/genética , Grupos Raciais/história , Ásia , DNA Antigo , Europa (Continente) , História Antiga , Humanos , Sibéria
2.
Am J Epidemiol ; 193(6): 846-852, 2024 06 03.
Artigo em Inglês | MEDLINE | ID: mdl-38140861

RESUMO

Few reliable estimates have been available for assessing the impact of the COVID-19 pandemic on mortality among Native Americans. Using deidentified publicly available data on deaths and populations by age, we estimated life expectancy for the years 2019-2022 for single-race non-Hispanic Native Americans. Life expectancy in 2022 was 67.8 years, 2.3 years higher than in 2021 but a huge 4-year loss from 2019. Although our life expectancy estimates for 2022 varied under different assumptions about racial/ethnic classification and age misreporting errors, all estimates were lower than the average for middle-income countries. Estimates of losses and gains in life expectancy were consistent across assumptions. Large reductions in COVID-19 death rates between 2021 and 2022 were largely offset by increases in rates of death from unintentional injuries (particularly drug overdoses), chronic liver disease, diabetes, and heart disease, underscoring the difficulties facing Native Americans in achieving reductions in mortality, let alone returning to levels of mortality prior to the pandemic. Serious data problems have persisted for many years, but the scarcity and inadequacy of estimates during the pandemic have underscored the urgent need for timely and accurate demographic data on the Native American population.


Assuntos
COVID-19 , Indígenas Norte-Americanos , Expectativa de Vida , Humanos , COVID-19/mortalidade , COVID-19/etnologia , Expectativa de Vida/etnologia , Expectativa de Vida/tendências , Pessoa de Meia-Idade , Idoso , Estados Unidos/epidemiologia , Adulto , Indígenas Norte-Americanos/estatística & dados numéricos , Masculino , Adolescente , Feminino , Idoso de 80 Anos ou mais , Adulto Jovem , Incerteza , Causas de Morte , Criança , SARS-CoV-2 , Pré-Escolar , Lactente , Recém-Nascido , Pandemias
3.
Liver Int ; 44(6): 1316-1328, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38407554

RESUMO

BACKGROUND: Metabolic dysfunction-associated steatotic liver disease (MASLD) is the leading cause of chronic liver disease and 10%-20% occurs in lean individuals. There is little data in the literature regarding outcomes in an ethnically-diverse patient populations with MASLD. Thus, we aim to investigate the natural history and ethnic disparities of MASLD patients in a diverse population, and stratified by body mass index categories. METHODS: We conducted a retrospective multicenter study on patients with MASLD at the Banner Health System from 2012 to 2022. Main outcomes included mortality and incidence of cirrhosis, cardiovascular disease, diabetes mellitus (DM), liver-related events (LREs), and cancer. We used competing risk and Cox proportional hazard regression analysis for outcome modelling. RESULTS: A total of 51 452 (cross-sectional cohort) and 37 027 (longitudinal cohort) patients were identified with 9.6% lean. The cohort was 63.33% European ancestry, 27.96% Hispanic ancestry, 3.45% African ancestry, and 2.31% Native American/Alaskan ancestry. Median follow-up was 45.8 months. After adjusting for confounders, compared to European individuals, Hispanic and Native American/Alaskan patients had higher prevalence of cirrhosis and DM, and individuals of Hispanic, African, and Native American/Alaskan ancestry had higher mortality and incidence of LREs and DM. Lean patients had higher mortality and incidence of LREs compared with non-lean patients. CONCLUSION: Native American/Alaskan, Hispanic, and African patients had higher mortality and incidence of LREs and DM compared with European patients. Further studies to explore the underlying disparities and intervention to prevent LREs in lean patients, particularly several ethnic groups, may improve clinical outcomes.


Assuntos
Disparidades nos Níveis de Saúde , Humanos , Masculino , Feminino , Estudos Retrospectivos , Pessoa de Meia-Idade , Idoso , Estudos Transversais , Adulto , Índice de Massa Corporal , Cirrose Hepática/mortalidade , Cirrose Hepática/etnologia , Incidência , Etnicidade/estatística & dados numéricos , Diabetes Mellitus/etnologia , Diabetes Mellitus/mortalidade , Doenças Cardiovasculares/mortalidade , Doenças Cardiovasculares/etnologia , Modelos de Riscos Proporcionais , Estados Unidos/epidemiologia , Estudos Longitudinais
4.
Proc Natl Acad Sci U S A ; 118(14)2021 04 06.
Artigo em Inglês | MEDLINE | ID: mdl-33782134

RESUMO

Different models have been proposed to elucidate the origins of the founding populations of America, along with the number of migratory waves and routes used by these first explorers. Settlements, both along the Pacific coast and on land, have been evidenced in genetic and archeological studies. However, the number of migratory waves and the origin of immigrants are still controversial topics. Here, we show the Australasian genetic signal is present in the Pacific coast region, indicating a more widespread signal distribution within South America and implicating an ancient contact between Pacific and Amazonian dwellers. We demonstrate that the Australasian population contribution was introduced in South America through the Pacific coastal route before the formation of the Amazonian branch, likely in the ancient coastal Pacific/Amazonian population. In addition, we detected a significant amount of interpopulation and intrapopulation variation in this genetic signal in South America. This study elucidates the genetic relationships of different ancestral components in the initial settlement of South America and proposes that the migratory route used by migrants who carried the Australasian ancestry led to the absence of this signal in the populations of Central and North America.


Assuntos
Evolução Molecular , Povos Indígenas/genética , Migração Humana , Humanos , América do Sul , Indígena Americano ou Nativo do Alasca
5.
Community Ment Health J ; 60(3): 442-456, 2024 04.
Artigo em Inglês | MEDLINE | ID: mdl-37828363

RESUMO

There were 9.7 million Native Americans (American Indian, Alaska Native-AI/AN- these acronyms will be used interchangeably with Native Americans throughout the paper) in 2019 comprising 2.9% of the U.S. population. Native American populations have disproportionately higher rates of mental illnesses compared to other racial groups in the U.S. Mental health is a significant public health concern for this population, impacting different areas of their lives including employment. Additionally, Native Americans continue to experience significant disparities in access to Vocational Rehabilitation (VR) services and have poor employment outcomes. However, little is known about the relationships among demographic factors, vocational rehabilitation services, and employment outcomes of Native Americans with mental illness. Consequently, the current study examined how demographic factors and VR services are related to successful employment outcomes for Native American VR clients with mental illnesses using data from the Rehabilitation Services Administration (RSA) program year (2019) Case Service Report (9-11). Both descriptive analysis and data mining approaches were used to answer the research questions. Chi-square Automatic Interaction Detector (CHAID) analysis was used to determine which of the VR services could best predict the successful employment outcome of Native Americans with mental illness. The findings of the data mining approach revealed that among all the vocational rehabilitation services, job placement assistance was the strongest predictor of successful employment among Native American clients with mental illnesses. The second most important service predicting successful employment for those who received job placement assistance was shown to be maintenance. Implications for rehabilitation counselors and future research are discussed.


Assuntos
Readaptação ao Emprego , Transtornos Mentais , Humanos , Reabilitação Vocacional , Indígena Americano ou Nativo do Alasca , Emprego , Demografia
6.
Fam Process ; 63(1): 97-112, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36710265

RESUMO

Parenting quality, family resilience, and community resilience and support have been found to be primary protective factors for the disproportionate burden of anxiety, posttraumatic stress disorder (PTSD), substance use disorder (SUD), depression, and suicide that US Indigenous youth and adults tend to experience. The purpose of this research study was to examine pilot results for outcomes related to relational factors for Indigenous family members who participated in the Weaving Healthy Families (WHF) program (translated to Chukka Auchaffi' Natana, in the Choctaw tribal language), a culturally grounded and empirically informed program geared toward promoting wellness, family resilience, parenting practices, and community resilience while also preventing SUD and violence. This nonrandomized pre-experimental pilot intervention followed a longitudinal design, which included pre-test, a post-test, and a 6-, 9-, and 12-month post-intervention follow-up surveys. Repeated-measures regressions were utilized with generalized estimating equations (GEE) to examine changes in parenting, family resilience, and communal mastery before and after the intervention for 24 adults and adolescents (12-17) across eight tribal families. Results indicate that the overall quality of parenting improved, as measured by improved parental monitoring and reductions in inconsistent discipline and corporal punishment. We identified sex differences in positive parenting, poor monitoring, and corporal punishment, with greater decreases in these measures among males over time. Family resilience and communal mastery improved for adolescent and adult participants after the WHF program. Our results indicate promising improvements across relational, familial, and community ecological, which provide clear clinical implications.


Assuntos
Indígena Americano ou Nativo do Alasca , Poder Familiar , Resiliência Psicológica , Adolescente , Adulto , Feminino , Humanos , Masculino , Saúde da Família , Criança
7.
Mol Biol Evol ; 39(4)2022 04 11.
Artigo em Inglês | MEDLINE | ID: mdl-35460423

RESUMO

Throughout human evolutionary history, large-scale migrations have led to intermixing (i.e., admixture) between previously separated human groups. Although classical and recent work have shown that studying admixture can yield novel historical insights, the extent to which this process contributed to adaptation remains underexplored. Here, we introduce a novel statistical model, specific to admixed populations, that identifies loci under selection while determining whether the selection likely occurred post-admixture or prior to admixture in one of the ancestral source populations. Through extensive simulations, we show that this method is able to detect selection, even in recently formed admixed populations, and to accurately differentiate between selection occurring in the ancestral or admixed population. We apply this method to genome-wide SNP data of ∼4,000 individuals in five admixed Latin American cohorts from Brazil, Chile, Colombia, Mexico, and Peru. Our approach replicates previous reports of selection in the human leukocyte antigen region that are consistent with selection post-admixture. We also report novel signals of selection in genomic regions spanning 47 genes, reinforcing many of these signals with an alternative, commonly used local-ancestry-inference approach. These signals include several genes involved in immunity, which may reflect responses to endemic pathogens of the Americas and to the challenge of infectious disease brought by European contact. In addition, some of the strongest signals inferred to be under selection in the Native American ancestral groups of modern Latin Americans overlap with genes implicated in energy metabolism phenotypes, plausibly reflecting adaptations to novel dietary sources available in the Americas.


Assuntos
Genética Populacional , Genoma Humano , Genômica/métodos , Hispânico ou Latino/genética , Humanos , Polimorfismo de Nucleotídeo Único/genética , População Branca/genética
8.
Mol Biol Evol ; 39(1)2022 01 07.
Artigo em Inglês | MEDLINE | ID: mdl-34875092

RESUMO

South America is home to one of the most culturally diverse present-day native populations. However, the dispersion pattern, genetic substructure, and demographic complexity within South America are still poorly understood. Based on genome-wide data of 58 native populations, we provide a comprehensive scenario of South American indigenous groups considering the genomic, environmental, and linguistic data. Clear patterns of genetic structure were inferred among the South American natives, presenting at least four primary genetic clusters in the Amazonian and savanna regions and three clusters in the Andes and Pacific coast. We detected a cline of genetic variation along a west-east axis, contradicting a hard Andes-Amazon divide. This longitudinal genetic variation seemed to have been shaped by both serial population bottlenecks and isolation by distance. Results indicated that present-day South American substructures recapitulate ancient macroregional ancestries and western Amazonia groups show genetic evidence of cultural exchanges that led to language replacement in precontact times. Finally, demographic inferences pointed to a higher resilience of the western South American groups regarding population collapses caused by the European invasion and indicated precontact population reductions and demic expansions in South America.


Assuntos
Genética Populacional , Genômica , Variação Genética , Humanos , Indígenas Sul-Americanos/genética , Povos Indígenas , América do Sul , Indígena Americano ou Nativo do Alasca
9.
J Autoimmun ; : 103117, 2023 Oct 07.
Artigo em Inglês | MEDLINE | ID: mdl-37813804

RESUMO

Metals contaminants of the environment from mine waste have been implicated as contributing agents in autoimmune disease. The current study compares metals and autoimmunity in two Tribal communities residing in the Black Hills and the Bighorn Mountains geographical regions that are scattered with extant hard rock mines. With documented drinking water contamination in both communities, in vivo levels of more than half of the measured serum and urine metals differed between the two communities and were substantially different from their national median values. Serum autoantibodies associated with systemic autoimmune disease were rare or at low-level, but antibodies to denatured (single-stranded) DNA and thyroid-specific autoantibodies were commonly elevated, especially in women. A three-tier statistical modeling process was carried out to examine individual metals exposure as predictors of autoantibody levels. For the most part only weak positive associations between individual metals and systemic autoantibodies were found, although univariate quantile regression analysis showed positive statistical associations of serum lead and antimony with anti-chromatin and anti-histone autoantibodies. Using age and gender-adjusted multivariable statistical models, metals did not predict anti-thyroglobulin or -thyroid peroxidase significantly and metals were generally negative predictors of the other autoantibodies. Overall these results suggest that elevated levels of environmental metals and metalloids in these communities may result in suppression of autoantibodies associated with systemic autoimmune disease.

10.
Psychol Sci ; 34(7): 739-753, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37186808

RESUMO

Leading up to the 2020 U.S. presidential election, Native American organizations and tribes launched get-out-the-vote campaigns that motivated Native peoples to vote in record numbers and helped flip battleground states. We conducted four studies (total N = 11,661 Native American adults) to examine the social and cultural factors explaining this historic Native civic engagement (e.g., campaigning). Results revealed that the more participants identified as being Native, the more they reported (a) engaging in civic activities, including get-out-the-vote behaviors during the 2020 election (Study 1); (b) civic engagement more broadly across a 5-year period (pilot study, Study 2); and (c) intentions to engage in civic activities in the future (Study 3). Moreover, participants who more strongly identified as Native were more likely to recognize the omission of their group from society and perceive greater group discrimination, which both independently and serially predicted greater civic engagement. These results suggest that leveraging the link between Native identification and group injustices can motivate action.


Assuntos
Indígena Americano ou Nativo do Alasca , Política , Discriminação Social , Identificação Social , Participação Social , Adulto , Humanos , Discriminação Percebida , Projetos Piloto , Marginalização Social , Motivação
11.
Proc Natl Acad Sci U S A ; 117(5): 2372-2377, 2020 02 04.
Artigo em Inglês | MEDLINE | ID: mdl-31932419

RESUMO

In the 15th century, ∼900,000 Native Americans, mostly Tupí speakers, lived on the Brazilian coast. By the end of the 18th century, the coastal native populations were declared extinct. The Tupí arrived on the east coast after leaving the Amazonian basin ∼2,000 y before present; however, there is no consensus on how this migration occurred: toward the northern Amazon and then directly to the Atlantic coast, or heading south into the continent and then migrating to the coast. Here we leveraged genomic data from one of the last remaining putative representatives of the Tupí coastal branch, a small, admixed, self-reported Tupiniquim community, as well as data of a Guaraní Mbyá native population from Southern Brazil and of three other native populations from the Amazonian region. We demonstrated that the Tupiniquim Native American ancestry is not related to any extant Brazilian Native American population already studied, and thus they could be considered the only living representatives of the extinct Tupí branch that used to settle the Atlantic Coast of Brazil. Furthermore, these data show evidence of a direct migration from Amazon to the Northeast Coast in pre-Columbian time, giving rise to the Tupí Coastal populations, and a single distinct migration southward that originated the Guaraní people from Brazil and Paraguay. This study elucidates the population dynamics and diversification of the Brazilian natives at a genomic level, which was made possible by recovering data from the Brazilian coastal population through the genomes of mestizo individuals.


Assuntos
Genoma Humano/genética , Indígenas Sul-Americanos/genética , Dinâmica Populacional , Brasil , Variação Genética , Genômica , Humanos , Densidade Demográfica
12.
Proc Natl Acad Sci U S A ; 117(51): 32557-32565, 2020 12 22.
Artigo em Inglês | MEDLINE | ID: mdl-33277433

RESUMO

Western South America was one of the worldwide cradles of civilization. The well-known Inca Empire was the tip of the iceberg of an evolutionary process that started 11,000 to 14,000 years ago. Genetic data from 18 Peruvian populations reveal the following: 1) The between-population homogenization of the central southern Andes and its differentiation with respect to Amazonian populations of similar latitudes do not extend northward. Instead, longitudinal gene flow between the northern coast of Peru, Andes, and Amazonia accompanied cultural and socioeconomic interactions revealed by archeology. This pattern recapitulates the environmental and cultural differentiation between the fertile north, where altitudes are lower, and the arid south, where the Andes are higher, acting as a genetic barrier between the sharply different environments of the Andes and Amazonia. 2) The genetic homogenization between the populations of the arid Andes is not only due to migrations during the Inca Empire or the subsequent colonial period. It started at least during the earlier expansion of the Wari Empire (600 to 1,000 years before present). 3) This demographic history allowed for cases of positive natural selection in the high and arid Andes vs. the low Amazon tropical forest: in the Andes, a putative enhancer in HAND2-AS1 (heart and neural crest derivatives expressed 2 antisense RNA1, a noncoding gene related to cardiovascular function) and rs269868-C/Ser1067 in DUOX2 (dual oxidase 2, related to thyroid function and innate immunity) genes and, in the Amazon, the gene encoding for the CD45 protein, essential for antigen recognition by T and B lymphocytes in viral-host interaction.


Assuntos
Adaptação Fisiológica/genética , Indígenas Sul-Americanos/genética , Altitude , Civilização , Clima , Oxidases Duais/genética , Fluxo Gênico , Frequência do Gene , Genética Populacional , Humanos , Antígenos Comuns de Leucócito/genética , Peru/etnologia , Polimorfismo de Nucleotídeo Único , RNA Longo não Codificante/genética , Floresta Úmida , Seleção Genética , Fatores Socioeconômicos , Proteínas com Domínio T/genética
13.
J Community Psychol ; 51(7): 2581-2591, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37027390

RESUMO

Native American young adults residing in urban communities are particularly vulnerable to substance use. After leaving high school, the pressures and stress of continuing education, finding employment, and the responsibilities related to family and tribal community obligations predispose these young adults to substance use. This study used a pre/post test design to evaluate a cultural-based Talking Circle intervention for the prevention of substance use among urban Native American young adults, ages 18-24. Three measures were used that included the Native-Reliance Questionnaire, the Indigenous-Global Assessment of Individual Needs (I-GAIN) Substance Use Scale, and the Patient Health Questionnaire (PHQ-9) measure for severity of depression. Findings revealed that participants demonstrated a higher sense of Native-Reliance, decrease in substance use, and a decrease in the PHQ-9 depressions scores from baseline to 6-month postintervention. These findings validate the importance of cultural-based interventions for the prevention of substance use among urban Native American young adults.


Assuntos
Indígenas Norte-Americanos , Transtornos Relacionados ao Uso de Substâncias , Humanos , Adulto Jovem , Comportamento Social , Transtornos Relacionados ao Uso de Substâncias/prevenção & controle , Inquéritos e Questionários
14.
J Ethn Subst Abuse ; 22(3): 589-605, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-34469277

RESUMO

Tribal Nations experience substance misuse at high rates often attributed to historical and contemporary traumas. In response, several Tribal Nations are addressing these issues through efforts to promote recovery and prevention to substance misuse. Study objectives were to partner with a Tribal Nation to develop a study to explore factors that contribute to the wellbeing of families to children with prenatal substance exposure and disseminate findings that can be translated back into the community. We applied Community-based participatory research (CBPR), strengths-based, and community-driven approaches during this two-year study development phase. We experienced challenges and identified solutions to partnering with one Tribal Nation on an epidemiological mixed-methods study centered on families with children that have prenatal substance exposure. Key inputs were becoming familiarizing with the community setting, structural supports for CBPR research, incorporating Indigenous CBPR principles, and developing a Community Advisory Team. We successfully collaborated with the Confederated Salish Kootenai Tribes Early Childhood Services program to develop a robust study design and a dissemination plan to ensure translation of study findings to the community. The robust study design consisted of common themes specific to a highly stigmatized study population, substance-abusing pregnant women, to protect participant confidentiality. Research alignment with community goals, allotting meaningful time to develop a research partnership, and incorporating culturally sensitive and community-relevant measures contributed to the successful development of an effective and rigorous study to better serve the Tribal Nation on addressing substance misuse.

15.
Toxicol Appl Pharmacol ; 456: 116292, 2022 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-36270330

RESUMO

The Navajo Nation was heavily mined for uranium (U) during the cold-war leading to a legacy of >1100 abandoned U mining, milling and associated waste sites. The Navajo Birth Cohort Study was initiated to assess the effect of non-occupational legacy exposure to U during pregnancy on birth outcomes and child development. We report that 92% of babies with detectable urine U at birth were born from mothers who had urine U concentrations greater than national norms during pregnancy, indicative of prenatal exposure to U. To assess immune alterations associated with U exposure on both mothers and babies, we investigated associations between cytokine profiles and maternal U and associations of these measures with cytokine profiles in babies. Effect sizes for the differences in cytokine profiles were more evident among babies than mothers. Overall, there were seven cytokines (IFN-γ, IL-1ß, IL-2, IL-4, IL-10, GM-CSF, and TNF-α), for which the effect size for babies with higher than the national U concentrations was medium to large (ORs of 2.21 (1.08-4.52) through 1.71(0.76-3.83). In contrast, only three cytokines (IL-8, IL-12p70, and TNF-α) had effect sizes which almost reached medium strength (ORs of 1.64 (0.74-4.05) through 1.36 (0.65-2.87) in mothers with U above national norms. The effects of prenatal exposures to uranium and associated alterations in systemic immune responses resulting from U exposure could impact both maternal health as well as healthy child development through induction of inflammation, autoimmunity or other chronic diseases related to immune dysfunction that may affect long-term health.


Assuntos
Urânio , Feminino , Humanos , Recém-Nascido , Gravidez , Estudos de Coortes , Citocinas , Mães , Fator de Necrose Tumoral alfa , Urânio/toxicidade
16.
Bioscience ; 72(10): 999-1006, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-36196220

RESUMO

Native peoples (Native American, Alaskan Native, Native Hawaiian) are underrepresented in academia; they represent 2% of the US population but 0.01% of enrolled undergraduate students. Native peoples share the experiences of colonization and forced assimilation, resulting in the loss of ancestral knowledge, language, and cultural identity. Recognizing history and the literature on social integration and mentorship, we followed 100 Native science and engineering scholars across a year of participation in the hybrid American Indian Science and Engineering Society mentorship program. The results showed that high-quality faculty mentorship predicted persistence a year later. Furthermore, mentors who shared knowledge of Native culture-through experience or shared heritage-uniquely contributed to the Native scholars' social integration and persistence through scientific community values in particular. Therefore, Native scholars may benefit from mentorship supporting the integration of their Native culture and discipline rather than assimilation into the dominant disciplinary culture.

17.
Proc Natl Acad Sci U S A ; 116(19): 9312-9317, 2019 05 07.
Artigo em Inglês | MEDLINE | ID: mdl-30988184

RESUMO

While many studies have highlighted human adaptations to diverse environments worldwide, genomic studies of natural selection in Indigenous populations in the Americas have been absent from this literature until very recently. Since humans first entered the Americas some 20,000 years ago, they have settled in many new environments across the continent. This diversity of environments has placed variable selective pressures on the populations living in each region, but the effects of these pressures have not been extensively studied to date. To help fill this gap, we collected genome-wide data from three Indigenous North American populations from different geographic regions of the continent (Alaska, southeastern United States, and central Mexico). We identified signals of natural selection in each population and compared signals across populations to explore the differences in selective pressures among the three regions sampled. We find evidence of adaptation to cold and high-latitude environments in Alaska, while in the southeastern United States and central Mexico, pathogenic environments seem to have created important selective pressures. This study lays the foundation for additional functional and phenotypic work on possible adaptations to varied environments during the history of population diversification in the Americas.


Assuntos
Indígenas Norte-Americanos/genética , Seleção Genética , Genética Populacional , Genoma Humano , Genômica , Haplótipos , Humanos , Polimorfismo de Nucleotídeo Único
18.
J Cancer Educ ; 37(4): 915-923, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-33083892

RESUMO

Cancer screening rates remain low among American Indian men, and cancer screening behaviors and barriers to cancer screening among American Indian men are not well understood. This study evaluated cancer screening behaviors in 102 Hopi men who were 50 years of age or older from the Hopi Survey of Cancer and Chronic Disease. Reported cancer screening frequencies were 15.7%, 45.1%, and 35.3% for fecal occult blood test (FOBT), colonoscopy, and prostate-specific antigen (PSA) test, respectively. Among men who reported having had a FOBT, 81.2% had the test more than 1 year ago. Among men who reported a colonoscopy, 60.8% had colonoscopy within the past 3 years. Similarly, among men who reported having had PSA, 72.3% had PSA within the past 3 years. "No one told me" was the most common answer for not undergoing FOBT (33.7%), colonoscopy (48.2%), and PSA (39.4%). Men who reported having had a PSA or digital rectal exam were three times as likely to also report having a FOBT or colonoscopy (odds ratio [OR] 3.19, 95% confidence interval [CI]: 1.21-8.46). Younger age (< 65) was associated with reduced odds of ever having prostate cancer screening (OR 0.28, 95% CI: 0.10-0.77). Ever having colorectal cancer screening and previous diagnosis of cancer increased odds of ever having prostate cancer screening (OR 3.15, 95% CI: 1.13-8.81 and OR 5.28, 95% CI: 1.15-24.18 respectively). This study illustrates the importance of community cancer education for men to improve cancer screening participation.


Assuntos
Neoplasias Colorretais , Neoplasias da Próstata , Colonoscopia , Neoplasias Colorretais/diagnóstico , Neoplasias Colorretais/prevenção & controle , Detecção Precoce de Câncer , Humanos , Masculino , Programas de Rastreamento , Sangue Oculto , Antígeno Prostático Específico , Neoplasias da Próstata/diagnóstico , Neoplasias da Próstata/prevenção & controle
19.
Infant Ment Health J ; 43(5): 744-755, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35921432

RESUMO

Family Spirit (FS) is a federally endorsed evidence-based home visiting programs serving as a key prevention strategy for expectant families and families with young children. Like other home-visiting programs, it shares client challenges in retention and engagement during implementation. We assessed (1) the feasibility and acceptability of implementing a precision approach to FS; and (2) differences in approaches to FS delivery. Home visitors, serving primarily Native American families, that delivered a standard (N = 6) or a precision approach (N = 6) to FS across four study sites each participated in up to four virtual focus group discussions (FGDs) (N = 16). Facilitators and barriers to implementation were identified across the curriculum approach, relational and contextual levels. Facilitators: Relevant and culturally sensitive lessons, lesson structure, client-home visitor relationship, client buy-in, home visitor autonomy, leadership support, flexible funding, and training. Barriers: Irrelevant lessons, substance use content, missing topics, families experiencing crises, client and home visitor availability, client feedback, nonsupportive leadership, inadequate funding, and organizational policies and practices. The precision approach offers (1) tailoring of lessons that supports relevance of content to clients; and (2) a target timeframe that supports flexibility in lesson delivery. This model structure may improve client participation and retention.


Espíritu de Familia (FS) es un programa de visitas a casa con base en la evidencia y respaldado federalmente, el cual sirve como una estrategia clave de prevención para familias con niños pequeños que esperan otro niño. Tal como otros programas de visitas a casa, éste comparte los retos de los participantes en cuanto a retención y participación activa durante la implementación. Evaluamos 1) la factibilidad y accesibilidad de implementar un acercamiento de precisión a FS; y 2) las diferencias en cuanto al acercamiento del ofrecimiento de FS. Los visitadores a casa, quienes primariamente les sirven a familia nativo-americanas, y que ofrecieron un acercamiento estándar (N = 6) o uno de precisión (N = 6) a FS a través de 4 lugares de estudio, cada uno participó en un máximo de 4 discusiones virtuales de grupos de enfoque (N = 16). Los aspectos que facilitaron y las barreras a la implementación se identificaron a lo largo de los niveles de acercamiento, relacionales y contextuales del currículo. Aspectos que facilitaron: lecciones relevantes y culturalmente sensibles, estructura de lecciones, la relación entre el participante-casa y el visitador, la aceptación por parte del participante, la autonomía del visitador a casa, el apoyo de liderazgo, la flexibilidad de los fondos, así como el entrenamiento. Barreras: lecciones irrelevantes, contenido sobre uso de sustancias, temas que no se incluyeron, las familias que experimentaban una crisis, la disponibilidad del participante y del visitador, información aportada por el participante, falta de apoyo del liderazgo, fondos inadecuados, así como las políticas y prácticas organizacionales. El acercamiento de precisión ofrece 1) moldear las lecciones que apoyan la relevancia del contenido a los participantes; y 2) un definido marco de tiempo que apoya la flexibilidad del ofrecimiento de las lecciones. Esta estructura de modelo pudiera mejorar la participación y retención de participantes.


Le programme Family Spirit (FS, soit Esprit de Famille) est une programme américain, basé sur des données probantes, avalisé par le gouvernement américain, de visite à domicile, servant de stratégie de prévention clé pour les familles attendant un enfant ou les familles avec de jeunes enfants. Comme d'autres programmes de visite à domicile, ce programme partage des difficultés dans la rétention et l'engagement des clients durant la mise en oeuvre. Nous avons évalué 1) la fiabilité et l'acceptabilité de la mise en œuvre d'une approche de précision du FS; et 2) des différences dans les approches de l'application du FS. Les visiteurs à domicile, servant principalement des familles amérindiennes américaines, qui ont présenté une approche standard (N = 6) ou une approche de précision (N = 6) du FS et au travers de 4 sites d'étude chacun ont participé à jusqu'à 4 discussions de groupe d'étude virtuels (n = 16). Les aspects facilitateurs et les barrières à la mise en place ont été identifiés au travers de l'approche du curriculum, des niveaux relationnels et contextuels. Aspects de facilitation: leçons pertinentes et culturellement sensibles, structure de la leçon, relation client-visiteur à domicile, adhésion du client, autonomie du visiteur à domicile, soutient des dirigeants, budget flexible, formation. Barrières: leçons n'étant pas pertinentes, contenu d'usage de substance, sujets qui manquent, familles faisant l'expérience de crises, disponibilité du client et du visiteur à domicile, retour du client, dirigeants qui n'offrent aucun soutien, budget inadéquat, et politiques et pratiques organisationnelles. L'approche de précision offre 1) une adaptation sur mesure des leçons qui soutient la pertinence du contenu pour les clients; et 2) un délai ciblé qui soutient la flexibilité de l'enseignement. Cette structure de modèle peut améliorer la participation et la rétention.


Assuntos
Indígenas Norte-Americanos , Criança , Pré-Escolar , Feminino , Visita Domiciliar , Humanos , Cuidado Pós-Natal , Gravidez , Indígena Americano ou Nativo do Alasca
20.
Child Fam Soc Work ; 27(2): 185-194, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35782683

RESUMO

Research indicates that effective disciplinary practices, such as offering praise and teaching acceptable versus non-acceptable behaviour, can act as protective factors against the social and behavioural health disparities experienced by Native Americans (NA). The purpose of this critical ethnographic study (n = 436 qualitative elder, adult, youth and professional participants) was to use the Framework of Historical Oppression, Resilience, and Transcendence (FHORT) to qualitatively examine participants' reported experiences of disciplinary practices. Thematic analysis of qualitative results indicated several approaches to disciplining children, which included the following themes: (a) Establishing Structure and Boundaries; (b) Taking Away Privileges and Rewarding Good Behavior; and (c) Teaching Right from Wrong. Results indicate that despite experiencing historical oppression, NAs still report many disciplinary and other parenting practices contributing to family resilience that were present prior to colonization. Communal and relational supports contribute to positive parenting practices, indicating an importance to promote holistic and inclusive clinical treatment approaches.

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