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1.
Epidemiol Infect ; 151: e120, 2023 07 12.
Artigo em Inglês | MEDLINE | ID: mdl-37435800

RESUMO

In 2022, a case of paralysis was reported in an unvaccinated adult in Rockland County (RC), New York. Genetically linked detections of vaccine-derived poliovirus type 2 (VDPV2) were reported in multiple New York counties, England, Israel, and Canada. The aims of this qualitative study were to: i) review immediate public health responses in New York to assess the challenges in addressing gaps in vaccination coverage; ii) inform a longer-term strategy to improving vaccination coverage in under-vaccinated communities, and iii) collect data to support comparative evaluations of transnational poliovirus outbreaks. Twenty-three semi-structured interviews were conducted with public health professionals, healthcare professionals, and community partners. Results indicate that i) addressing suboptimal vaccination coverage in RC remains a significant challenge after recent disease outbreaks; ii) the poliovirus outbreak was not unexpected and effort should be invested to engage mothers, the key decision-makers on childhood vaccination; iii) healthcare providers (especially paediatricians) received technical support during the outbreak, and may require resources and guidance to effectively contribute to longer-term vaccine engagement strategies; vi) data systems strengthening is required to help track under-vaccinated children. Public health departments should prioritize long-term investments in appropriate communication strategies, countering misinformation, and promoting the importance of the routine immunization schedule.


Assuntos
Poliomielite , Poliovirus , Criança , Humanos , Saúde Pública , New York/epidemiologia , Poliomielite/epidemiologia , Poliomielite/prevenção & controle , Surtos de Doenças/prevenção & controle , Vacinação , Vacina Antipólio de Vírus Inativado , Vacina Antipólio Oral
2.
PLoS One ; 18(6): e0286529, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37267295

RESUMO

BACKGROUND: The UK was the first country to launch a national pandemic COVID-19 vaccination programme, which was implemented swiftly despite significant vaccine supply constraints. The delivery strategy used a combination of mass vaccination sites operated by NHS secondary care providers and local sites led by Primary Care Networks, and local pharmacies. Despite nation-wide rollout, persistent gaps in coverage continued to affect particular populations, including ethnic minority and marginalised social groups. AIM: The study examined sub-national immunisation commissioners and providers' perspectives on how the COVID-19 vaccine programme was operationalised, and how delivery strategies impacted inequalities in access to vaccination services and uptake. The study aimed to inform national programme implementation, sustainability and future pandemic preparedness. METHODS: Qualitative research was conducted in eight local NHS areas in 4 regions of England. Semi-structured interviews were performed with 82 sub-national NHS and public health vaccine providers and commissioners. RESULTS: England's COVID-19 vaccination programme was described as top down, centralised and highly political. The programme gradually morphed from a predominantly mass vaccination strategy into more locally driven and tailored approaches able to respond more effectively to inequalities in uptake. Over time more flexibility was introduced, as providers adapted services by "working around" the national systems for vaccine supply and appointment booking. The constant change faced by providers and commissioners was mitigated by high staff motivation and resilience, local collaboration and pragmatism. Opportunities for efficient implementation were missed because priority was given to achieving national performance targets at the expense of a more flexible sub-national tailored delivery. CONCLUSION: Pandemic vaccination delivery models need to be adapted for underserved and hesitant groups, working in collaboration with local actors. Learnings from the initial COVID-19 vaccine roll-out in England and elsewhere is important to inform future pandemic responses, in tailoring strategies to local communities, and improve large-scale vaccination programmes.


Assuntos
Vacinas contra COVID-19 , COVID-19 , Humanos , Etnicidade , COVID-19/epidemiologia , COVID-19/prevenção & controle , Grupos Minoritários , Inglaterra/epidemiologia , Vacinação , Vacinação em Massa
4.
SSM Qual Res Health ; 4: 100365, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38169919

RESUMO

A polio booster campaign targeting all children aged 1-9 was implemented across London between August-December 2022 as part of a national enhanced poliovirus incident response. Orthodox Jewish (OJ) children were particularly vulnerable to transmission due to disparities in childhood vaccination coverage and the transnational spread of poliovirus affecting linked populations in New York and Israel. This study aimed to evaluate how the polio booster campaign was tailored to increase uptake and enable access for OJ families in northeast and north central London boroughs, and the impact of the campaign on local-level vaccine inequities. Semi-structured in-depth interviews (n = 36) were conducted with participants involved in the implementation and delivery of the polio booster campaign, and OJ mothers. Site visits (n = 5) were conducted at vaccine clinics, and rapid interviews (n = 26) were held to explore parental perceptions of the poliovirus incident and childhood immunisations. Enablers to vaccination during the campaign included the production of targeted printed communications and offering flexible clinic times in primary care settings or complementary delivery pathways embedded in family-friendly spaces. Barriers included digital booking systems. Mothers reported being aware of the poliovirus incident, but the majority of those interviewed did not feel their children were at risk of contracting polio. Healthcare provider participants raised concerns that the vaccine response had limited impact on reducing disparities in vaccine uptake. While OJ families were recognised as a priority for public health engagement during the poliovirus incident response, this evaluation identified limitations in reducing transmission vulnerability during the booster campaign. Lessons for future campaign delivery include effectively conveying transmission risk and the urgency to vaccinate. Priorities for mitigating vaccine inequities include public engagement to develop messaging strategies and strengthening the capacity of primary care and complementary delivery pathways to serve families with higher-than-average numbers of children.

5.
Soc Sci Med ; 309: 115237, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35964473

RESUMO

The COVID-19 pandemic has disproportionately impacted ethnic minorities in the global north, evidenced by higher rates of transmission, morbidity, and mortality relative to population sizes. Orthodox Jewish neighbourhoods in London had extremely high SARS-CoV-2 seroprevalence rates, reflecting patterns in Israel and the US. The aim of this paper is to examine how responsibilities over health protection are conveyed, and to what extent responsibility is sought by, and shared between, state services, and 'community' stakeholders or representative groups, and families in public health emergencies. The study investigates how public health and statutory services stakeholders, Orthodox Jewish communal custodians and households sought to enact health protection in London during the first year of the pandemic (March 2020-March 2021). Twenty-eight semi-structured interviews were conducted across these cohorts. Findings demonstrate that institutional relations - both their formation and at times fragmentation - were directly shaped by issues surrounding COVID-19 control measures. Exchanges around protective interventions (whether control measures, contact tracing technologies, or vaccines) reveal diverse and diverging attributions of responsibility and authority. The paper develops a framework of public health relations to understand negotiations between statutory services and minority groups over responsiveness and accountability in health protection. Disaggregating public health relations can help social scientists to critique who and what characterises institutional relationships with minority groups, and what ideas of responsibility and responsiveness are projected by differently-positioned stakeholders in health protection.


Assuntos
COVID-19 , Pandemias , COVID-19/epidemiologia , Humanos , Londres/epidemiologia , Saúde Pública , SARS-CoV-2 , Estudos Soroepidemiológicos
6.
Public Health Pract (Oxf) ; 4: 100287, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-35811646

RESUMO

Objectives: A WHO Tailoring Immunization Programmes (TIP) evaluation was conducted in 2014-16 to investigate suboptimal childhood vaccination coverage in the north London Orthodox Jewish community. In 2021-22 a qualitative evaluation of the COVID-19 vaccine programme (CVP) was conducted in the same setting. This paper examines whether the issues identified by the TIP affected the CVP and what differences emerged between these two vaccine programme evaluations. Study design: Qualitative study. Methods: The CVP evaluation involved conducting 28 semi-structured interviews with public health professionals, Orthodox Jewish welfare and religious representatives, and household members in February-May 2021. The key considerations arising from the thematic analysis of this data was then compared systematically with the overarching findings from the TIP study. Results: The issues identified in the TIP study diverged and converged with results from the CVP evaluation: i) participants did not express concerns of unmet CVP information needs; ii) the social value of COVID-19 vaccines was influenced by international travel requirements; iii) in contrast to commissioning constraints noted to have limited flexible delivery of childhood immunisations in the TIP evaluation, the CVP was characterised by a flexible commissioning and delivery model. This model was facilitated by significant government investment as part of the COVID-19 pandemic response. Conclusions: The comparative analysis indicates that flexible vaccine commissioning and fit for purpose public health investment can influence how documented knowledge is translated into action. Implications are raised for how routine vaccination services are equipped to serve the needs of minority populations with historically suboptimal coverage levels.

7.
Sci Rep ; 12(1): 8550, 2022 05 20.
Artigo em Inglês | MEDLINE | ID: mdl-35595824

RESUMO

Some social settings such as households and workplaces, have been identified as high risk for SARS-CoV-2 transmission. Identifying and quantifying the importance of these settings is critical for designing interventions. A tightly-knit religious community in the UK experienced a very large COVID-19 epidemic in 2020, reaching 64.3% seroprevalence within 10 months, and we surveyed this community both for serological status and individual-level attendance at particular settings. Using these data, and a network model of people and places represented as a stochastic graph rewriting system, we estimated the relative contribution of transmission in households, schools and religious institutions to the epidemic, and the relative risk of infection in each of these settings. All congregate settings were important for transmission, with some such as primary schools and places of worship having a higher share of transmission than others. We found that the model needed a higher general-community transmission rate for women (3.3-fold), and lower susceptibility to infection in children to recreate the observed serological data. The precise share of transmission in each place was related to assumptions about the internal structure of those places. Identification of key settings of transmission can allow public health interventions to be targeted at these locations.


Assuntos
COVID-19 , SARS-CoV-2 , COVID-19/epidemiologia , Criança , Feminino , Humanos , Judeus , Estudos Soroepidemiológicos , Reino Unido/epidemiologia
8.
Vaccine ; 40(14): 2226-2232, 2022 03 25.
Artigo em Inglês | MEDLINE | ID: mdl-35216844

RESUMO

Ethnic and religious minorities have been disproportionately affected by the SARS-CoV-2 pandemic and are less likely to accept coronavirus vaccinations. Orthodox (Haredi) Jewish neighbourhoods in England experienced high incidences of SARS-CoV-2 in 2020-21 and measles outbreaks (2018-19) due to suboptimal childhood vaccination coverage. The objective of our study was to explore how the coronavirus vaccination programme (CVP) was co-delivered between public health services and an Orthodox Jewish health organisation. Methods included 28 semi-structured interviews conducted virtually with public health professionals, community welfare and religious representatives, and household members. We examined CVP delivery from the perspectives of those involved in organising services and vaccine beneficiaries. Interview data was contextualised within debates of the CVP in Orthodox (Haredi) Jewish print and social media. Thematic analysis generated five considerations: i) Prior immunisation-related collaboration with public health services carved a role for Jewish health organisations to host and promote coronavirus vaccination sessions, distribute appointments, and administer vaccines ii) Public health services maintained responsibility for training, logistics, and maintaining vaccination records; iii) The localised approach to service delivery promoted vaccination in a minority with historically suboptimal levels of coverage; iv) Co-delivery promoted trust in the CVP, though a minority of participants maintained concerns around safety; v) Provision of CVP information and stakeholders' response to situated (context-specific) challenges and concerns. Drawing on this example of CVP co-delivery, we propose that a localised approach to delivering immunisation programmes could address service provision gaps in ways that involve trusted community organisations. Localisation of vaccination services can include communication or implementation strategies, but both approaches involve consideration of investment, engagement and coordination, which are not cost-neutral. Localising vaccination services in collaboration with welfare groups raises opportunities for the on-going CVP and other immunisation programmes, and constitutes an opportunity for ethnic and religious minorities to collaborate in safeguarding community health.


Assuntos
COVID-19 , Vacinas , COVID-19/prevenção & controle , Vacinas contra COVID-19 , Humanos , Grupos Minoritários , Saúde Pública , SARS-CoV-2 , Vacinação
9.
Med Anthropol Q ; 36(1): 119-138, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-35038347

RESUMO

This article contributes to anthropological debates surrounding borderlands and biosecurity by tracing the multiple pursuits of protection that emerge between the state and minorities during infectious disease outbreaks. Drawing on an ethnographic study of child health in Jerusalem following epidemics of measles and COVID-19, the article demonstrates how responses to public health interventions are less about compliance or indiscipline than a competing pursuit of immunity to preserve religious lifeworlds. The voices of Orthodox Jews are situated alongside printed broadsides that circulated anonymous truth-claims in Jerusalem neighborhoods. These broadsides cast state intervention against historical narratives of deception and ethical failures. Borderland tensions, like a virus, mutate and influence responses to authority and biosecurity, and they reconfigure vernacular entanglements of religion, state, and health. The article encourages anthropologists to consider responses to public health interventions and non-vaccination beyond a COVID-19 silo, as part of situated relations between states and minority populations.


Assuntos
COVID-19 , Sarampo , Antropologia Médica , Criança , Surtos de Doenças/prevenção & controle , Humanos , Sarampo/epidemiologia , Sarampo/prevenção & controle , Saúde Pública
10.
Cult Med Psychiatry ; 46(2): 277-296, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33543423

RESUMO

This paper explores how criticism surrounding the ethics and safety of biomedical technologies circulates and 'converts' through global-local religious encounters, producing new claims of moral opposition and rights to religious freedom. The paper is concerned with the question of what rhetorical devices make vaccine safety doubt relevant to religiously Orthodox settings and what implications arise? Based on an ethnographic study of vaccine decision-making and non-vaccination advocacy in Jerusalem, the paper examines how opposition is forged amidst evolving global-local encounters and relations. The data reveal how Christian activists attempt to engender ethical and moral opposition to vaccination among American Orthodox Jews in Jerusalem by 'converting' public criticism around safety into a religious discourse of bodily governance. Pinpointing how critiques of biomedical technologies discursively 'convert' offers a conceptual template in anthropology to chart how counter-positions are formed and transformed amidst evolving tensions between biomedical and religious cosmologies.


Assuntos
Vacinação , Vacinas , Antropologia Cultural , Humanos , Princípios Morais , Estados Unidos
11.
Med Anthropol ; 41(6-7): 645-658, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34937446

RESUMO

Recent demographic analysis of sex ratios at birth in the UK has signaled the issue of "missing girls" in British Asian minority populations. This paper juxtaposes the processes of reproductive regulation set in motion by this new demographic knowledge of son preference, with lived experiences of gender equality and family-making practices. Ethnographic research conducted with British Pakistani, Indian, and Bangladeshi families reveal diverse mechanisms of family decision-making that add to and nuance the prevailing statistics. We use the lens of "gender equality" and vernacular framings of sex-selective abortion to advance conceptual understandings of son preference as increasingly disconnected from selective reproduction, at the same time as selective reproduction is connected with the governance of ethnic minority identity and reproduction.


Assuntos
Etnicidade , Direitos Sexuais e Reprodutivos , Aborto Eugênico , Antropologia Médica , Feminino , Humanos , Recém-Nascido , Amor , Grupos Minoritários , Gravidez , Reino Unido
12.
Lancet Reg Health Eur ; 6: 100127, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34308409

RESUMO

BACKGROUND: Ethnic and religious minorities have been disproportionately affected by SARS-CoV-2 worldwide. The UK strictly-Orthodox Jewish community has been severely affected by the pandemic. This group shares characteristics with other ethnic minorities including larger family sizes, higher rates of household crowding and relative socioeconomic deprivation. We studied a UK strictly-Orthodox Jewish population to understand transmission of COVID-19 within this community. METHODS: We performed a household-focused cross-sectional SARS-CoV-2 serosurvey between late-October and early December 2020 prior to the third national lockdown. Randomly-selected households completed a standardised questionnaire and underwent serological testing with a multiplex assay for SARS-CoV-2 IgG antibodies. We report clinical illness and testing before the serosurvey, seroprevalence stratified by age and sex. We used random-effects models to identify factors associated with infection and antibody titres. FINDINGS: A total of 343 households, consisting of 1,759 individuals, were recruited. Serum was available for 1,242 participants. The overall seroprevalence for SARS-CoV-2 was 64.3% (95% CI 61.6-67.0%). The lowest seroprevalence was 27.6% in children under 5 years and rose to 73.8% in secondary school children and 74% in adults. Antibody titres were higher in symptomatic individuals and declined over time since reported COVID-19 symptoms, with the decline more marked for nucleocapsid titres. INTERPRETATION: In this tight-knit religious minority population in the UK, we report one of the highest SARS-CoV-2 seroprevalence levels in the world to date, which was markedly higher than the reported 10% seroprevalence in London at the time of the study. In the context of this high force of infection, all age groups experienced a high burden of infection. Actions to reduce the burden of disease in this and other minority populations are urgently required. FUNDING: This work was jointly funded by UKRI and NIHR [COV0335; MR/V027956/1], a donation from the LSHTM Alumni COVID-19 response fund, HDR UK, the MRC and the Wellcome Trust.

13.
Soc Sci Med ; 280: 114052, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-34051560

RESUMO

Maintaining 'faith' in vaccination has emerged as a public health challenge amidst outbreaks of preventable disease among religious minorities and rising claims to 'exemption' from vaccine mandates. Outbreaks of measles and coronavirus have been particularly acute among Orthodox Jewish neighbourhoods in North America, Europe and Israel, yet no comparative studies have been conducted to discern the shared and situated influences on vaccine decision-making. This paper synthesises qualitative research into vaccine decision-making among Orthodox Jews in the United Kingdom and Israel during the 2014-15 and 2018-19 measles epidemics, and 2020-21 coronavirus pandemic. The methods integrate 66 semi-structured informal interviews conducted with parents, formal and informal healthcare practitioners, and religious leaders, as well as analysis of tailored non-vaccination advocacy events and literature. The paper argues that the discourse of 'religious' exemption and opposition to vaccination obscures the diverse practices and philosophies that inform vaccine decisions, and how religious law and leaders form a contingent influence. Rather than viewing religion as the primary framework through which vaccine decisions are made, Orthodox Jewish parents were more concerned with safety, trust and choice in similar ways to 'secular' logics of non-vaccination. Yet, religious frameworks were mobilised, and at times politicised, to suit medico-legal discourse of 'exemption' from coercive or mandatory vaccine policies. By conceptualising tensions around protection as 'political immunities,' the paper offers a model to inform social science understandings of how health, law and religion intersect in contemporary vaccine opposition.


Assuntos
Clero , Vacinação , Europa (Continente) , Humanos , Israel , Lógica , América do Norte , Reino Unido
14.
Anthropol Med ; 28(4): 411-419, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33183060

RESUMO

This commentary addresses the issue of vaccine hesitancy and decision-making among religious minority groups in high-income country settings. Recent measles outbreaks have been attributed to lower-level vaccination coverage among religious minorities, which has inspired targeted as well as wholesale public health interventions and legislation in a range of jurisdictions. The commentary takes the case of self-protective ethnic and religious minority groups, especially Haredi or 'ultra-Orthodox' Jews in the United Kingdom, to address two key aims. First, this commentary flags how damaging representations of religious minorities in recent measles outbreaks can be avoided by better understanding inner processes of vaccine decision-making and acceptance, which can, in turn, help to address hesitancy sustainably and trustfully. Second, the commentary advocates for addressing vaccine hesitancy as part of a broader re-visioning of public health relations with minority groups. This commentary calls on public health services to improve confidence in childhood vaccinations rather than resorting to compulsory (and coercive) vaccination policies in order to address lower-level vaccination coverage. The commentary signposts how essential it is to carefully navigate relationships with minority groups amidst the new forms of public health preparedness that will emerge from the 2020 Coronavirus pandemic (COVID-19).


Assuntos
COVID-19 , Vacinas , Antropologia Médica , Humanos , Grupos Minoritários , SARS-CoV-2 , Hesitação Vacinal
15.
Med Anthropol ; 39(6): 491-505, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32068438

RESUMO

The UK's on-going sex-selective abortion (SSA) controversy remains a major obstacle to the liberalization of national abortion governance, and is an issue broadly attributed to a "cultural" preference for sons among South Asian women. We conceptualize how healthcare professionals "arbitrate" requests for SSA by exploring the tension between its legal status and how requests are encountered by abortion providers. SSA is framed in this article as a legitimate care service that can support providers to meet the diverse reproductive health needs of women to the full extent of the law.


Assuntos
Aborto Induzido , Pessoal de Saúde/ética , Pré-Seleção do Sexo/ética , Aborto Induzido/ética , Aborto Induzido/legislação & jurisprudência , Antropologia Médica , Sudeste Asiático/etnologia , Inglaterra , Feminino , Humanos , Gravidez
16.
J Biosoc Sci ; 51(3): 436-443, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30616702

RESUMO

Bio-Detection Dogs (BDDs) are used in some high-income countries as a diagnostic intervention, yet little is known about their potential in low/middle-income countries with limited diagnostic resources. This exploratory study investigated the opportunities and implications of deploying BDDs as a mobile diagnostic intervention to identify people with asymptomatic malaria, particularly at ports of entry, as an important step to malaria elimination in a population. A qualitative study design consisting of participant observation, five focus group discussions and informal conversations was employed in The Gambia in April-May 2017. A disciplined German Shepherd companion dog (not trained as a BDD) was introduced to research participants and their perceptions recorded. Field-notes and discussions were transcribed, translated and analysed thematically. Most research participants viewed positively the possibility of using BDDs to detect malaria, with the major advantage of being non-invasive. Some concerns, however, were raised regarding safety and efficacy, as well as cultural issues around the place of dogs within human society. The Gambia is a rabies-endemic country, and unfamiliar dogs are not usually approached, with implications for how research participants perceived BDDs. Understanding such concerns and working with local people to address such issues must be part of any successful strategy to deploy BDDs in new settings. Bio-Detection Dogs represent a potentially non-invasive diagnostic tool for the detection of asymptomatic or chronic malaria infections, particularly in areas with very low parasite rates. However, it is important to understand local concerns and work closely with communities to address those concerns. Wider deployment of BDDs will also require careful planning and sustained financial support.


Assuntos
Países em Desenvolvimento , Técnicas e Procedimentos Diagnósticos , Cães , Malária/diagnóstico , Animais , Estudos de Viabilidade , Grupos Focais , Gâmbia , Humanos , Masculino , Aceitação pelo Paciente de Cuidados de Saúde , Pobreza , Pesquisa Qualitativa
17.
Reprod Health Matters ; 26(52): 1513271, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30235987

RESUMO

This commentary discusses Ireland's 25 May 2018 Referendum result to repeal the Eighth Amendment and has two key aims. Firstly, it encourages policy-makers to grasp the full potential of legislative reform by enabling and protecting women's access to abortion care within a continuum of sexual and reproductive healthcare options. Secondly, it calls for urgent clarity about access to abortion care in the interim period of legislative transition.


Assuntos
Aborto Induzido/legislação & jurisprudência , Acessibilidade aos Serviços de Saúde/legislação & jurisprudência , Política , Humanos , Irlanda , Direitos da Mulher/legislação & jurisprudência
18.
Scr Instituti Donneriani Abo ; 27: 264-283, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-31031521

RESUMO

This article offers a reflexive and anthropological contribution to the current volume of scripta Instituti Donneriani aboensis. It reflects on the experience of conducting anthropological work at home - or across homes - I considered this research to be an experience of 'Jewish ethnography' as a Jewish ethnographer. However, my own 'Jew-ish' background meant that I had become 'neither fish nor fowl' within the field-site, which proved both to be an obstacle to, and an opportunity for, conducting the research. It utilises this experience to challenge the conceptual use of the term 'community', which encapsulates considerable diversity but obscures the nuanced differences that can pervade a social body. these reflections demonstrate how positionality can be used as a tool for postgraduate students to untangle the complexities of conducting ethnographic research at 'home' or in relation to religious minority groups, where significant intra-group differences of practice and worldviews exist, but may otherwise be concealed by the image of 'community'.

19.
Hepatology ; 60(4): 1291-301, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24923488

RESUMO

UNLABELLED: There is no clinically applicable biomarker for surveillance of hepatocellular carcinoma (HCC), because the sensitivity of serum alpha-fetoprotein (AFP) is too low for this purpose. Here, we determined the diagnostic performance of a panel of urinary metabolites of HCC patients from West Africa. Urine samples were collected from Nigerian and Gambian patients recruited on the case-control platform of the Prevention of Liver Fibrosis and Cancer in Africa (PROLIFICA) program. Urinary proton nuclear magnetic resonance ((1) H-NMR) spectroscopy was used to metabolically phenotype 290 subjects: 63 with HCC; 32 with cirrhosis (Cir); 107 with noncirrhotic liver disease (DC); and 88 normal control (NC) healthy volunteers. Urine samples from a further cohort of 463 subjects (141 HCC, 56 Cir, 178 DC, and 88 NC) were analyzed, the results of which validated the initial cohort. The urinary metabotype of patients with HCC was distinct from those with Cir, DC, and NC with areas under the receiver operating characteristic (AUROC) curves of 0.86 (0.78-0.94), 0.93 (0.89-0.97), and 0.89 (0.80-0.98) in the training set and 0.81 (0.73-0.89), 0.96 (0.94-0.99), and 0.90 (0.85-0.96), respectively, in the validation cohort. A urinary metabolite panel, comprising inosine, indole-3-acetate, galactose, and an N-acetylated amino acid (NAA), showed a high sensitivity (86.9% [75.8-94.2]) and specificity (90.3% [74.2-98.0]) in the discrimination of HCC from cirrhosis, a finding that was corroborated in a validation cohort (AUROC: urinary panel = 0.72; AFP = 0.58). Metabolites that were significantly increased in urine of HCC patients, and which correlated with clinical stage of HCC, were NAA, dimethylglycine, 1-methylnicotinamide, methionine, acetylcarnitine, 2-oxoglutarate, choline, and creatine. CONCLUSION: The urinary metabotyping of this West African cohort identified and validated a metabolite panel that diagnostically outperforms serum AFP.


Assuntos
Biomarcadores Tumorais/urina , Carcinoma Hepatocelular/diagnóstico , Neoplasias Hepáticas/diagnóstico , Metionina/urina , Niacinamida/análogos & derivados , Sarcosina/análogos & derivados , alfa-Fetoproteínas/urina , Acetilcarnitina/urina , Adolescente , Adulto , África Ocidental/epidemiologia , Idoso , Idoso de 80 Anos ou mais , Carcinoma Hepatocelular/epidemiologia , Carcinoma Hepatocelular/urina , Estudos de Casos e Controles , Colina/urina , Creatina/urina , Feminino , Humanos , Ácidos Cetoglutáricos/urina , Neoplasias Hepáticas/epidemiologia , Neoplasias Hepáticas/urina , Masculino , Pessoa de Meia-Idade , Niacinamida/urina , Fenótipo , Reprodutibilidade dos Testes , Sarcosina/urina , Sensibilidade e Especificidade , Adulto Jovem
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