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1.
BMC Public Health ; 24(1): 1612, 2024 Jun 17.
Article in English | MEDLINE | ID: mdl-38886671

ABSTRACT

BACKGROUND: Social support provided by a family member has been found to have a buffering effect on distress and is associated with better diabetes self-care. This study explores the meaning of social support, as described by close family members of foreign-born people living with type 2 diabetes (PWDM) in Sweden. It also explores the support provided by family members, and the support they need to be able to support the PWDM. METHODS: Qualitative explorative study, semi-structured interviews for data collection. Qualitative content analysis based on a theoretical framework on social support. Purposive sample of 13 family members, 18-52-years-old, born in countries in the Middle East, Africa, and Russia. RESULTS: The meaning of support was described as social and emotional. Most participants described a stressful situation; feelings of sadness/worry about the risk of the PWDM developing complications added to a strained life situation from which one could not opt out. Frequent daily contacts in a family network were evident, particularly by children trained as healthcare professionals. Caring for a family member was considered a filial piety, but it was also a chance to reciprocate. The support provided was mainly informational (e.g., reminders about nutritional intake), but it was also instrumental/practical (administering medicines, helping with economy/logistics, planning/cooking meals, basic care) and emotional (sharing meals, thoughts, and activities). The support the family members needed was getting first-hand information by attending the physician visits, being able to book appointments themselves at suitable times, and preventing the withholding of important information about the PWDM. They also desired an open telephone-line, oral and written information, particularly on diet. CONCLUSIONS: To family-members, supporting the PWDM was normal and a filial piety. Support provided and needed was not only informational but also instrumental/practical and emotional. In diabetes care, addressing foreign-born individuals, diabetes education needs to be developed, also including family members. Informational material, particularly on diet, and improved access to healthcare and information about the healthcare system have the potential to increase family members' control over the situation and prevent a negative trajectory in caregiving with perceived demands causing high levels of stress.


Subject(s)
Diabetes Mellitus, Type 2 , Family , Qualitative Research , Social Support , Humans , Diabetes Mellitus, Type 2/psychology , Diabetes Mellitus, Type 2/therapy , Female , Male , Middle Aged , Adult , Sweden , Family/psychology , Young Adult , Adolescent , Interviews as Topic , Transients and Migrants/psychology , Transients and Migrants/statistics & numerical data , Emigrants and Immigrants/psychology , Middle East/ethnology , Africa/ethnology
2.
Article in English | MEDLINE | ID: mdl-38929028

ABSTRACT

This paper examines how African immigrants living with HIV negotiate and reconstruct their productive (i.e., educational and career opportunities), sexual, and reproductive identities. We used data from a mixed-methods study to explore how stigma and social networks in which participants were embedded shaped how they understood and negotiated their role expectations and responsibilities. Participants revealed how HIV not only changed their identities and limited their sex life, partner choices, and fundamental decisions about fertility and reproduction, but also presented them with the opportunity to reinvent/reshape their lives. Our analysis revealed that the cultural discourses about illness and HIV in participant's countries of origin, the acculturative and migratory stressors, and the competing influences and expectations from family and friends in their home and host countries shape their illness experience, and how they adjust to life with HIV. This paper builds on sociological understanding of illness experience as a social construct that shapes the ill person's identity, role, and function in society. Specifically, the paper contributes to discourses on how (i) participants' social location and identity (as transnational migrants adjusting to acculturative stressors associated with resettlement into a new country), (ii) cultural discourses about illness and HIV in their countries of origin, and (iii) embeddedness in transnational social networks influence health outcomes, including lived experiences with chronic illnesses and stigmatized conditions such as HIV.


Subject(s)
Emigrants and Immigrants , HIV Infections , Social Stigma , Humans , HIV Infections/psychology , HIV Infections/ethnology , Male , Female , Emigrants and Immigrants/psychology , Adult , Middle Aged , Social Support , Africa/ethnology , Social Networking
3.
BMJ Open ; 14(6): e078085, 2024 Jun 04.
Article in English | MEDLINE | ID: mdl-38834331

ABSTRACT

OBJECTIVES: This study aims to investigate the incidence, associated factors and interventions to address teen pregnancy involvement (TPI) among African, Caribbean and Black (ACB) adolescents in North America. DESIGN: We conducted a scoping review of the literature, guided by the social-ecological model. DATA SOURCES: Studies were retrieved from databases such as Ovid Medline, Ovid Embase, CINAHL, CAB Direct and Google Scholar and imported into COVIDENCE for screening. ELIGIBILITY CRITERIA: The Joanna Briggs Institute scoping reviews protocol guided the establishment of eligibility criteria. Included studies focused on rates, associated factors and interventions related to TPI among ACB boys and girls aged 10-19 in North America. The publication time frame was restricted to 2010-2023, encompassing both peer-reviewed and non-peer-reviewed studies with diverse settings. DATA EXTRACTION AND SYNTHESIS: Data were extracted from 32 articles using a form developed by the principal author, focusing on variables aligned with the research question. RESULTS: The scoping review revealed a dearth of knowledge in Canadian and other North American literature on TPI in ACB adolescents. Despite an overall decline in teen pregnancy rates, disparities persist, with interventions such as postpartum prescription of long-acting birth control and teen mentorship programmes proving effective. CONCLUSION: The findings highlight the need for increased awareness, research and recognition of male involvement in adolescent pregnancies. Addressing gaps in housing, employment, healthcare, sexual health education and health systems policies for marginalised populations is crucial to mitigating TPI among ACB adolescents. IMPACT: The review underscores the urgent need for more knowledge from other North American countries, particularly those with growing ACB migrant populations.


Subject(s)
Pregnancy in Adolescence , Humans , Adolescent , Pregnancy in Adolescence/ethnology , Pregnancy in Adolescence/statistics & numerical data , Pregnancy , Female , Male , Caribbean Region/epidemiology , Caribbean Region/ethnology , Black People/statistics & numerical data , Africa/ethnology , Africa/epidemiology , Child
4.
Br J Nurs ; 33(11): S4-S10, 2024 Jun 06.
Article in English | MEDLINE | ID: mdl-38850138

ABSTRACT

HIV in the UK is concentrated in a few key populations, and African migrants are among them. To date, there has been no documented record of the personal experiences of this group to accompany the significant amount of epidemiological data on these communities. There is no record celebrating the contribution, resilience and lived experience of Africans living with HIV in the UK, their allies and their response to the epidemic. A group of African women who are long-standing HIV activists and advocates, much respected for their leadership within the HIV community, considered that it was important to capture and tell these stories to ensure they were accurately recorded in the history of HIV. Their experience spans the story of the African community's experience of HIV in the UK. They formed a steering group and the project aimed to showcase 40 stories to coincide with the 40th anniversary of HIV in 2021.


Subject(s)
HIV Infections , Transients and Migrants , Humans , HIV Infections/psychology , HIV Infections/ethnology , Transients and Migrants/psychology , United Kingdom , Female , Black People/psychology , Africa/ethnology
5.
Ethn Dis ; 34(1): 49-52, 2024 Jan.
Article in English | MEDLINE | ID: mdl-38854788

ABSTRACT

Introduction: Over the past two years, public health practitioners in African countries have worked actively to combat the Coronavirus Disease 2019 (COVID-19) pandemic with relatively low fatality rates. This pandemic has forced healthcare professionals to re-think and redesign the healthcare system within their own country. Methods: Using the Afrocentric PEN-3 framework and a letter style, the purpose of this commentary was to describe the positive, existential, and negative socio-cultural values associated with African healthcare systems. The commentary also highlights socio-cultural factors affecting public trust in African healthcare systems and their health agencies and how systematically decolonizing them may decrease foreign reliance and empower efficient locally based solutions. Results: We, as African public health practitioners, make three key points in this commentary. First, African public health practitioners have developed resilience within under-resourced healthcare systems. Secondly, oral tradition in African societies and its byproduct (social media) is the means through which people connect and share what they know about any topics (COVID-19). Thirdly, African leaders have particularly contributed to the high level of distrust in their countries' healthcare systems in favor of the healthcare systems of industrialized countries. Conclusion: This commentary concludes with implications for encouraging African public health practitioners to cultivate the resilience that has led to contributing to the wellness of millions of Africans during this COVID-19 pandemic.


Subject(s)
COVID-19 , Delivery of Health Care , Humans , COVID-19/epidemiology , Africa/ethnology , Delivery of Health Care/organization & administration , Public Health , Trust , SARS-CoV-2 , Colonialism , Pandemics
7.
BMJ Glob Health ; 9(5)2024 May 02.
Article in English | MEDLINE | ID: mdl-38697655

ABSTRACT

INTRODUCTION: The present paper assessed the relationship between maternal life satisfaction (MLS) and the intergenerational transmission of female genital cutting (FGC, female circumcision). It was hypothesised that the association would be more strongly positive in countries in which FGC is more prevalent (ie, culturally normative), suggesting a practice that is socially reinforcing within sociocultural contexts in which it is common. METHODS: Across two studies with more than 85 000 participants in 15 African and Asian countries, mothers completed surveys reporting on their own FGC experiences and those of their daughters' and on their educational history and socioeconomic status. RESULTS: The association between MLS and daughter circumcision was weak but positive for the full sample. Contrary to predictions, in countries in which FGC is uncommon, it was more positively associated with MLS, and in countries in which it is common, it was weakly or negatively associated with MLS. CONCLUSION: Results are contrary to the notion that the intergenerational transmission of FGC is a function of happiness deriving from its cultural normativity. They suggest, instead, a diversity of social motives depending on cultural context. Customised messaging to reduce the intergenerational transmission of FGC is discussed.


Subject(s)
Circumcision, Female , Personal Satisfaction , Humans , Female , Adult , Circumcision, Female/ethnology , Circumcision, Female/psychology , Africa/ethnology , Mothers/psychology , Asia/ethnology , Nuclear Family , Young Adult , Adolescent , Middle Aged , Surveys and Questionnaires
8.
BMJ Glob Health ; 9(5)2024 May 09.
Article in English | MEDLINE | ID: mdl-38724069

ABSTRACT

BACKGROUND: Although the levels of demand for family planning satisfied (DFPS) have increased in many countries, cultural norms remain a significant barrier in low- and middle-income countries. In the context of multireligious African countries, our objective was to investigate intersectional inequalities in DFPS by modern or traditional contraceptives according to religion and women's empowerment. METHODS: Analyses were based on Demographic and Health Surveys carried out between 2010 and 2021 in African countries. Countries with at least 10% of Muslims and Christians were selected to analyse inequalities in family planning. The religious groups were characterised by wealth, area of residence, women's age and women's empowerment. The mean level of empowerment was estimated for each religious group, and multilevel Poisson regression was used to assess whether DFPS varied based on the level of women's empowerment among Muslims and Christians. RESULTS: Our study sample of 14 countries comprised 35% of Muslim and 61% of Christian women. Christians had higher levels of empowerment across all three domains compared with Muslims and women with no/other religion. DFPS was also higher among Christians (57%) than among Muslims (36%). Pooled analysis indicated a consistent association between DFPS and women's empowerment, with higher prevalence ratios among Muslims than Christians, especially in the decision-making domain. CONCLUSIONS: The gap between Muslims and Christians in DFPS significantly reduced as the level of empowerment increased. It highlights the importance of understanding and addressing cultural factors sensibly and respectfully to satisfy the demand for family planning services.


Subject(s)
Christianity , Empowerment , Family Planning Services , Islam , Humans , Female , Adult , Young Adult , Middle Aged , Africa/ethnology , Adolescent , Socioeconomic Factors
9.
Tidsskr Nor Laegeforen ; 144(5)2024 04 23.
Article in Norwegian | MEDLINE | ID: mdl-38651718

ABSTRACT

Background: Few studies have been conducted on young people's attitudes to the COVID-19 vaccine during the pandemic. We wished to examine how young people with an ethnic minority background decided whether to have the COVID-19 vaccine, based on the concept of vaccine hesitancy. Vaccine hesitancy involves uncertainty with regard to vaccination, irrespective of the decision taken. Material and method: Fourteen qualitative in-depth interviews with young people aged 16-25 years with an ethnic minority background and from the east side of Oslo were analysed and categorised into main themes. The participants also had links to the Middle East, South Asia and Africa. Results: Several of the study participants were hesitant to be vaccinated. Their hesitation was linked to the impression that the vaccine had been developed rapidly, false rumours, long travel times to vaccination centres and fear of adverse effects. A number called for better information. Vaccination through the school was described as a facilitating factor. Family and friends were less crucial in their assessment of whether to have the COVID-19 vaccine. The majority had trust in the authorities. Interpretation: Insufficient knowledge about the vaccine and fear of adverse effects, as well as practical barriers associated with undergoing vaccination, appears to contribute to vaccine scepticism among young people with an ethnic minority background. The authorities and healthcare personnel should provide young people with better vaccine information. Information should be provided by personnel they already trust, such as the school nurse.


Subject(s)
COVID-19 Vaccines , COVID-19 , Vaccination Hesitancy , Adolescent , Adult , Female , Humans , Male , Young Adult , COVID-19/prevention & control , COVID-19 Vaccines/administration & dosage , Ethnicity/psychology , Health Knowledge, Attitudes, Practice/ethnology , Minority Groups/psychology , Norway , Qualitative Research , Vaccination/psychology , Vaccination Hesitancy/psychology , Middle East/ethnology , Asia, Southern/ethnology , Africa/ethnology
10.
Scand J Med Sci Sports ; 34(5): e14636, 2024 May.
Article in English | MEDLINE | ID: mdl-38671551

ABSTRACT

Hypertension is a leading risk factor for cardiovascular disease and is modulated by genetic variants. This study aimed to assess the effect of obesity genetic liability and physical activity on hypertension among European and African ancestry individuals within the UK Biobank (UKB). Participants were 230 115 individuals of European ancestry and 3239 individuals of African ancestry from UKB. Genetic liability for obesity were estimated using previously published data including genetic variants and effect sizes for body mass index (BMI), waist-hip ratio (WHR) and waist circumference (WC) using Plink software. The outcome was defined as stage 2 hypertension (systolic blood pressure ≥ 140 mmHg, diastolic blood pressure ≥90 mmHg, or the use of anti-hypertensive medications). The association between obesity genetic liability and the outcome was assessed across categories of self-reported physical activity using logistic regression. Among European ancestry participants, there was up to a 1.2 greater odds of hypertension in individuals with high genetic liability and low physical activity compared to individuals with low genetic liability and high physical activity (p < 0.001). In individuals engaging in low levels of physical activity compared with moderate/high physical activity, the effect of BMI genetic liability on hypertension was greater (p interaction = 0.04). There was no evidence of an association between obesity genetic liability and hypertension in individuals of African ancestry in the whole sample or within separate physical activity groups (p > 0.05). This study suggests that higher physical activity levels are associated with lower odds of stage 2 hypertension among European ancestry individuals who carry high genetic liability for obesity. This cannot be inferred for individuals of African ancestry, possibly due to the low African ancestry sample size within the UKB.


Subject(s)
Adiposity , Black People , Exercise , Hypertension , Obesity , White People , Adult , Aged , Female , Humans , Male , Middle Aged , Adiposity/genetics , Black People/genetics , Blood Pressure/genetics , Body Mass Index , Genetic Predisposition to Disease , Hypertension/genetics , Obesity/genetics , Risk Factors , United Kingdom , Waist Circumference , Waist-Hip Ratio , White People/genetics , Africa/ethnology , Europe/ethnology
11.
Health Expect ; 27(3): e14055, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38666627

ABSTRACT

BACKGROUND: People living with human immunodeficiency virus (HIV) are disproportionately impacted by socioeconomic deprivation and are at increased risk of developing other long-term conditions (LTCs). These illnesses require transformative action to tackle the adverse effects on their health. Data on lived experiences of LTCs among people living with HIV of Black African and Black Caribbean ethnicities are sparse, and how people with LTCs are impacted by social determinants of health (SDoH). METHODS: Through a phenomenological study design this qualitative study, conducted in 2022, comprised four focus group discussions (FGDs) with 20 people of Black ethnicities living with HIV were purposively invited from a community organisation (CO) in London, including four semistructured interviews with CO staff. Following transcription, qualitative data were analysed thematically and measures to validate the findings were implemented. RESULTS: The findings are presented in terms of the following four levels of SDoH: (1) individual determinants (such as the impact of SDoH on lifestyle modification and self-management); (2) interpersonal determinants (such as positive experiences of accessing healthcare for LTCs); (3) clinical determinants (such as care pathway barriers) and (4) systemic determinants (such as systemic barriers related to race/ethnicity). CONCLUSIONS: It is necessary to provide ongoing and interactive education to community members who live with HIV, focusing on risks and management of LTCs. Additionally, individuals would benefit from support to navigate increasingly complex and fragmented health services. Health Service staff require cultural competence when caring for patients of Black African and Black Caribbean ethnicities with complex health and psychosocial needs. PATIENT OR PUBLIC CONTRIBUTION: The research team collaborated with an HIV CO in South London from the very start of the project to agree the study design and learn about the realities of their daily lived experiences. Community collaborators helped to develop the semistructured interview and FGD topic guides, and were directly involved in the data gathering, analysis and validation.


Subject(s)
Black People , Focus Groups , HIV Infections , Qualitative Research , Social Determinants of Health , Adult , Female , Humans , Male , Middle Aged , Black People/psychology , Caribbean Region/ethnology , Chronic Disease/ethnology , Health Services Accessibility , HIV Infections/ethnology , HIV Infections/psychology , London , Social Determinants of Health/ethnology , Africa/ethnology
13.
Gerodontology ; 41(1): 54-58, 2024 Mar.
Article in English | MEDLINE | ID: mdl-37948317

ABSTRACT

OBJECTIVES: We investigated access to dental services and associated factors in a community of Quilombola older people. BACKGROUND: Quilombola populations are groups of individuals descended from black Africans subjected to slavery during part of Brazilian history. As marginalised and neglected individuals, they have high rates of negative indicators and require further attention to the social determinants that affect their health reality. MATERIALS AND METHODS: A cross-sectional quantitative study was conducted in the Quilombola community of Castainho, in the Northeast region of Brazil. In this community, 34 older people aged between 65 and 74 resided. We collected self-report data on sociodemographic and economic characteristics, along with oral examinations by the researchers. The primary dependent variable was regular access to dental services. Statistical analysis used Fisher's exact test (P = .05). RESULTS: Among the 32 participants in the final sample, 18.8% (n = 6) reported accessing dental services in the previous 6 months. Self-declared individuals of mixed race, with positive self-assessment of oral health, and those who did not self-perceive the need for treatment had lower rates of regular access to dental services (P < .05). CONCLUSION: Use of dental services by older Quilombola people is low, and there are differences by ethnicity and individual perception of oral health.


Subject(s)
Black People , Dental Care , Health Services Accessibility , Oral Health , Aged , Humans , Black People/ethnology , Black People/statistics & numerical data , Brazil/epidemiology , Cross-Sectional Studies , Dental Care/statistics & numerical data , Oral Health/ethnology , Oral Health/standards , Oral Health/statistics & numerical data , Africa/ethnology , Health Services Accessibility/statistics & numerical data
14.
J Allergy Clin Immunol ; 153(2): 408-417, 2024 Feb.
Article in English | MEDLINE | ID: mdl-38000696

ABSTRACT

BACKGROUND: Black adults are disproportionately affected by asthma and are often considered a homogeneous group in research studies despite cultural and ancestral differences. OBJECTIVE: We sought to determine if asthma morbidity differs across adults in Black ethnic subgroups. METHODS: Adults with moderate-severe asthma were recruited across the continental United States and Puerto Rico for the PREPARE (PeRson EmPowered Asthma RElief) trial. Using self-identifications, we categorized multiethnic Black (ME/B) participants (n = 226) as Black Latinx participants (n = 146) or Caribbean, continental African, or other Black participants (n = 80). African American (AA/B) participants (n = 518) were categorized as Black participants who identified their ethnicity as being American. Baseline characteristics and retrospective asthma morbidity measures (self-reported exacerbations requiring systemic corticosteroids [SCs], emergency department/urgent care [ED/UC] visits, hospitalizations) were compared across subgroups using multivariable regression. RESULTS: Compared with AA/B participants, ME/B participants were more likely to be younger, residing in the US Northeast, and Spanish speaking and to have lower body mass index, health literacy, and <1 comorbidity, but higher blood eosinophil counts. In a multivariable analysis, ME/B participants were significantly more likely to have ED/UC visits (incidence rate ratio [IRR] = 1.34, 95% CI = 1.04-1.72) and SC use (IRR = 1.27, 95% CI = 1.00-1.62) for asthma than AA/B participants. Of the ME/B subgroups, Puerto Rican Black Latinx participants (n = 120) were significantly more likely to have ED/UC visits (IRR = 1.64, 95% CI = 1.22-2.21) and SC use for asthma (IRR = 1.43, 95% CI = 1.06-1.92) than AA/B participants. There were no significant differences in hospitalizations for asthma among subgroups. CONCLUSIONS: ME/B adults, specifically Puerto Rican Black Latinx adults, have higher risk of ED/UC visits and SC use for asthma than other Black subgroups.


Subject(s)
Asthma , Black People , Adult , Humans , Asthma/complications , Asthma/epidemiology , Asthma/ethnology , Emergency Service, Hospital/statistics & numerical data , Ethnicity/statistics & numerical data , Hispanic or Latino/ethnology , Hispanic or Latino/statistics & numerical data , Morbidity , Retrospective Studies , United States/epidemiology , Puerto Rico/ethnology , Black or African American/ethnology , Black or African American/statistics & numerical data , Caribbean People/statistics & numerical data , Africa/ethnology , Black People/ethnology , Black People/statistics & numerical data
15.
Nature ; 623(7988): 820-827, 2023 Nov.
Article in English | MEDLINE | ID: mdl-37938771

ABSTRACT

The majority of oncogenic drivers are intracellular proteins, constraining their immunotherapeutic targeting to mutated peptides (neoantigens) presented by individual human leukocyte antigen (HLA) allotypes1. However, most cancers have a modest mutational burden that is insufficient for generating responses using neoantigen-based therapies2,3. Neuroblastoma is a paediatric cancer that harbours few mutations and is instead driven by epigenetically deregulated transcriptional networks4. Here we show that the neuroblastoma immunopeptidome is enriched with peptides derived from proteins essential for tumorigenesis. We focused on targeting the unmutated peptide QYNPIRTTF discovered on HLA-A*24:02, which is derived from the neuroblastoma-dependency gene and master transcriptional regulator PHOX2B. To target QYNPIRTTF, we developed peptide-centric chimeric antigen receptors (PC-CARs) through a counter panning strategy using predicted potentially cross-reactive peptides. We further proposed that PC-CARs can recognize peptides on additional HLA allotypes when presenting a similar overall molecular surface. Informed by our computational modelling results, we show that PHOX2B PC-CARs also recognize QYNPIRTTF presented by HLA-A*23:01, the most common non-A2 allele in people with African ancestry. Finally, we demonstrate potent and specific killing of neuroblastoma cells expressing these HLAs in vitro and complete tumour regression in mice. These data suggest that PC-CARs have the potential to expand the pool of immunotherapeutic targets to include non-immunogenic intracellular oncoproteins and allow targeting through additional HLA allotypes in a clinical setting.


Subject(s)
Antigens, Neoplasm , Neuroblastoma , Oncogene Proteins , Peptides , Receptors, Chimeric Antigen , Animals , Humans , Mice , Africa/ethnology , Alleles , Amino Acid Sequence , Carcinogenesis , Cross Reactions , HLA-A Antigens/chemistry , HLA-A Antigens/immunology , Neuroblastoma/genetics , Neuroblastoma/immunology , Neuroblastoma/therapy , Oncogene Proteins/antagonists & inhibitors , Oncogene Proteins/immunology , Peptides/antagonists & inhibitors , Peptides/chemistry , Peptides/immunology , Receptors, Chimeric Antigen/immunology , Receptors, Chimeric Antigen/therapeutic use
16.
Hist Cienc Saude Manguinhos ; 30: e2023052, 2023.
Article in English, Portuguese | MEDLINE | ID: mdl-37878978

ABSTRACT

This article discusses the origin of quijila/kijila in Central West African culture, more particularly in the cultural universe of the Imbangala (Jaga) and the Ambundu and Kimbundu populations who lived in the Portuguese regions of Angola and the Congo in the seventeenth and eighteenth centuries. Following this, it investigates how the concept of quijila was structured, comprehended, and transformed, both in Africa, where it was basically a food prohibition, but whose applications and meanings varied; and in Brazil, to where it was transported in the 1700s, and where it transformed into a disease which attacked blacks, especially Africans of various origins, being framed as such in the Hippocratic-Galen universe characteristic of that time.


Este artigo discute a origem da quijila/kijila na cultura centro-ocidental africana, mais particularmente no universo cultural dos imbangalas (jagas) e das populações ambundos e kimbundos, que viviam nas regiões portuguesas de Angola e do Congo, nos séculos XVII e XVIII. Em seguida, investiga como foi estruturado, compreendido e transformado o conceito de quijila tanto na África, basicamente um interdito alimentar, mas cujos significados e aplicações variam, quanto no Brasil, para onde foi transportado nos Setecentos, transformando-se numa doença que atacava os negros, especialmente os africanos de diversas origens, sendo enquadrada pelos médicos locais no universo da medicina hipocrática-galena vigente na época.


Subject(s)
African People , Black People , Disease , Humans , Africa/ethnology , Africa, Western/ethnology , African People/history , Black People/ethnology , Black People/history , Brazil , History, 17th Century , History, 18th Century , Disease/ethnology , Disease/history
17.
Nature ; 622(7982): 348-358, 2023 Oct.
Article in English | MEDLINE | ID: mdl-37794188

ABSTRACT

High-throughput proteomics platforms measuring thousands of proteins in plasma combined with genomic and phenotypic information have the power to bridge the gap between the genome and diseases. Here we performed association studies of Olink Explore 3072 data generated by the UK Biobank Pharma Proteomics Project1 on plasma samples from more than 50,000 UK Biobank participants with phenotypic and genotypic data, stratifying on British or Irish, African and South Asian ancestries. We compared the results with those of a SomaScan v4 study on plasma from 36,000 Icelandic people2, for 1,514 of whom Olink data were also available. We found modest correlation between the two platforms. Although cis protein quantitative trait loci were detected for a similar absolute number of assays on the two platforms (2,101 on Olink versus 2,120 on SomaScan), the proportion of assays with such supporting evidence for assay performance was higher on the Olink platform (72% versus 43%). A considerable number of proteins had genomic associations that differed between the platforms. We provide examples where differences between platforms may influence conclusions drawn from the integration of protein levels with the study of diseases. We demonstrate how leveraging the diverse ancestries of participants in the UK Biobank helps to detect novel associations and refine genomic location. Our results show the value of the information provided by the two most commonly used high-throughput proteomics platforms and demonstrate the differences between them that at times provides useful complementarity.


Subject(s)
Blood Proteins , Disease Susceptibility , Genomics , Genotype , Phenotype , Proteomics , Humans , Africa/ethnology , Asia, Southern/ethnology , Biological Specimen Banks , Blood Proteins/analysis , Blood Proteins/genetics , Datasets as Topic , Genome, Human/genetics , Iceland/ethnology , Ireland/ethnology , Plasma/chemistry , Proteome/analysis , Proteome/genetics , Proteomics/methods , Quantitative Trait Loci , United Kingdom
18.
Nature ; 622(7984): 784-793, 2023 Oct.
Article in English | MEDLINE | ID: mdl-37821707

ABSTRACT

The Mexico City Prospective Study is a prospective cohort of more than 150,000 adults recruited two decades ago from the urban districts of Coyoacán and Iztapalapa in Mexico City1. Here we generated genotype and exome-sequencing data for all individuals and whole-genome sequencing data for 9,950 selected individuals. We describe high levels of relatedness and substantial heterogeneity in ancestry composition across individuals. Most sequenced individuals had admixed Indigenous American, European and African ancestry, with extensive admixture from Indigenous populations in central, southern and southeastern Mexico. Indigenous Mexican segments of the genome had lower levels of coding variation but an excess of homozygous loss-of-function variants compared with segments of African and European origin. We estimated ancestry-specific allele frequencies at 142 million genomic variants, with an effective sample size of 91,856 for Indigenous Mexican ancestry at exome variants, all available through a public browser. Using whole-genome sequencing, we developed an imputation reference panel that outperforms existing panels at common variants in individuals with high proportions of central, southern and southeastern Indigenous Mexican ancestry. Our work illustrates the value of genetic studies in diverse populations and provides foundational imputation and allele frequency resources for future genetic studies in Mexico and in the United States, where the Hispanic/Latino population is predominantly of Mexican descent.


Subject(s)
Exome Sequencing , Genome, Human , Genotype , Hispanic or Latino , Adult , Humans , Africa/ethnology , Americas/ethnology , Europe/ethnology , Gene Frequency/genetics , Genetics, Population , Genome, Human/genetics , Genotyping Techniques , Hispanic or Latino/genetics , Homozygote , Loss of Function Mutation/genetics , Mexico , Prospective Studies
19.
Nature ; 617(7962): 755-763, 2023 05.
Article in English | MEDLINE | ID: mdl-37198480

ABSTRACT

Despite broad agreement that Homo sapiens originated in Africa, considerable uncertainty surrounds specific models of divergence and migration across the continent1. Progress is hampered by a shortage of fossil and genomic data, as well as variability in previous estimates of divergence times1. Here we seek to discriminate among such models by considering linkage disequilibrium and diversity-based statistics, optimized for rapid, complex demographic inference2. We infer detailed demographic models for populations across Africa, including eastern and western representatives, and newly sequenced whole genomes from 44 Nama (Khoe-San) individuals from southern Africa. We infer a reticulated African population history in which present-day population structure dates back to Marine Isotope Stage 5. The earliest population divergence among contemporary populations occurred 120,000 to 135,000 years ago and was preceded by links between two or more weakly differentiated ancestral Homo populations connected by gene flow over hundreds of thousands of years. Such weakly structured stem models explain patterns of polymorphism that had previously been attributed to contributions from archaic hominins in Africa2-7. In contrast to models with archaic introgression, we predict that fossil remains from coexisting ancestral populations should be genetically and morphologically similar, and that only an inferred 1-4% of genetic differentiation among contemporary human populations can be attributed to genetic drift between stem populations. We show that model misspecification explains the variation in previous estimates of divergence times, and argue that studying a range of models is key to making robust inferences about deep history.


Subject(s)
Genetics, Population , Human Migration , Phylogeny , Humans , Africa/ethnology , Fossils , Gene Flow , Genetic Drift , Genetic Introgression , Genome, Human , History, Ancient , Human Migration/history , Linkage Disequilibrium/genetics , Polymorphism, Genetic , Time Factors
20.
Cancer Causes Control ; 34(5): 479-489, 2023 May.
Article in English | MEDLINE | ID: mdl-36854988

ABSTRACT

BACKGROUND: Despite the disparate human papillomavirus (HPV) infection rates among sexually active Black young adults, HPV vaccine uptake remains low among this population. This study aimed to explore HPV beliefs, attitudes, and knowledge among Black young adults and provide recommendations on ways to improve vaccine uptake. METHODS: We used a mixed-method, convergent design to conduct five focus groups and administered a 40-item electronic survey that was developed with health belief model (HBM) constructs. We assessed HPV and vaccine knowledge, barriers, and attitudes toward vaccination. We analyzed quantitative data using descriptive statistics and bivariate methods. Focus group transcripts were analyzed using content analysis. Results were integrated to obtain a better understanding of the topic. RESULTS: Forty individuals participated in the study. The mean age was 22.2 ± 4.5 years and 55% identified as African immigrants. Integrated data revealed themes mapped to relevant HBM constructs. Almost one third (32.5%) of participants were unaware of their susceptibility to HPV infection and its severity. From focus group discussions, the majority (75%) believed that vaccines are beneficial. Major cues to action include promoting HPV vaccine uptake via community wide informational sessions, provider recommendation, and social and mass media campaigns. CONCLUSION: Barriers to vaccine uptake, limited HPV knowledge, and lack of vaccine recommendation are important factors contributing to low vaccine uptake among Black young adults. Interventions to decrease barriers to HPV vaccination, increase HPV knowledge, address misconceptions, and unfavorable beliefs are needed to promote HPV vaccine uptake.


Subject(s)
Black People , Emigrants and Immigrants , Health Knowledge, Attitudes, Practice , Papillomavirus Infections , Papillomavirus Vaccines , Patient Acceptance of Health Care , Adolescent , Adult , Humans , Young Adult , Black or African American/psychology , Black or African American/statistics & numerical data , Emigrants and Immigrants/psychology , Emigrants and Immigrants/statistics & numerical data , Health Knowledge, Attitudes, Practice/ethnology , Human Papillomavirus Viruses , Papillomavirus Infections/epidemiology , Papillomavirus Infections/ethnology , Papillomavirus Infections/prevention & control , Papillomavirus Infections/psychology , Papillomavirus Vaccines/therapeutic use , Patient Acceptance of Health Care/ethnology , Patient Acceptance of Health Care/psychology , Patient Acceptance of Health Care/statistics & numerical data , Vaccination/psychology , Africa/ethnology , Black People/psychology , Black People/statistics & numerical data
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