RESUMO
Reducing low-value care (LVC) and improving healthcare's climate readiness are critical factors for improving the sustainability of health systems. Care practices that have been deemed low or no-value generate carbon emissions, waste and pollution without improving patient or population health. There is nascent, but growing, research and evaluation to inform practice change focused on the environmental co-benefits of reducing LVC. The objective of this study was to develop foundational knowledge of this field through a scoping review and bibliometric analysis. We searched four databases, Medline, Embase, Scopus and CINAHL, and followed established scoping review and bibliometric analysis methodology to collect and analyze the data. A total of 145 publications met the inclusion criteria and were published between 2013 and July 2023, with over 80% published since 2020. Empirical studies comprised 21%, while commentary or opinions comprised 51% of publications. The majority focused on healthcare generally (27%), laboratory testing (14%), and medications (14%). Empirical publications covered a broad range of environmental issues with general and practice-specific 'Greenhouse gas (GHG) emissions', 'waste management' and 'resource use' as most common topics. Reducing practice-specific 'GHG emissions' was the most commonly reported environmental outcome. The bibliometric analysis revealed nine international collaboration networks producing work on eight key healthcare areas. The nineteen 'top' authors were primarily from the US, Australia and Canada.
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Bibliometria , Humanos , Atenção à SaúdeRESUMO
BACKGROUND: Decision impact studies have become increasingly prevalent in genomic medicine, particularly in cancer research. Such studies are designed to provide evidence of clinical utility for genomic tests by evaluating their impact on clinical decision-making. This paper offers insights into understanding of the origins and intentions of these studies through an analysis of the actors and institutions responsible for the production of this new type of evidence. METHODS: We conducted bibliometric and funding analyses of decision impact studies in genomic medicine research. We searched databases from inception to June 2022. The datasets used were primarily from Web of Science. Biblioshiny, additional R-based applications, and Microsoft Excel were used for publication, co-authorship and co-word analyses. RESULTS: 163 publications were included for the bibliometric analysis; a subset of 125 studies were included for the funding analysis. Included publications started in 2010 and increased steadily over time. Decision impact studies were primarily produced for proprietary genomic assays for use in cancer care. The author and affiliate analyses reveal that these studies were produced by 'invisible colleges' of researchers and industry actors with collaborations focused on producing evidence for proprietary assays. Most authors had an industry affiliation, and the majority of studies were funded by industry. While studies were conducted in 22 countries, the majority had at least one author from the USA. DISCUSSION: This study is a critical step in understanding the role of industry in the production of new types of research. Based on the data collected, we conclude that decision impact studies are industry-conceived and -produced evidence. The findings of this study demonstrate the depth of industry involvement and highlight a need for further research into the use of these studies in decision-making for coverage and reimbursement.
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Pesquisa Biomédica , Medicina Genômica , Bibliometria , IndústriasRESUMO
BACKGROUND: While processes of adoption and the impacts of various health technologies have been extensively studied by health services and policy researchers, the influence of policy makers' governing styles on these processes have been largely neglected. Through a comparative analysis of non-invasive prenatal testing (NIPT) in the Canadian provinces of Ontario and Quebec, this article examines how decisions about this technology were shaped by contrasting political ideologies, resulting in vastly different innovation and adoption strategies and outcomes. METHODS: A comparative qualitative investigation comprising of a document analysis followed by semi-structured interviews with key informants. Interview participants were researchers, clinicians, and private sector medical laboratory employees based in Ontario and Quebec, Canada. Interviews were conducted both in person and virtually- owing partly to the COVID-19 pandemic - to garner perspectives regarding the adoption and innovation processes surrounding non-invasive prenatal testing in both provinces. All interviews were recorded and transcribed verbatim and data were analyzed using thematic analysis. RESULTS: Through an analysis of 21 in-depth interview transcripts and key documents, the research team identified three central themes: 1) health officials in each province demonstrated a unique approach to using the existing scholarly literature on NIPT; 2) each provincial government demonstrated its own preference for service delivery, with Ontario preferring private and Quebec preferring public; and finally, 3) both Ontario and Quebec's strategies to NIPT adoption and innovation was contextualized within each province's unique financial positioning and concerns. These findings illustrate how both Quebec's nationalist focus and use of industrial policy and Ontario's 'New Public Management' style had implications for how this emerging healthcare technology was made available within each province's publicly-financed health system. CONCLUSIONS: Our study reveals how these governments' differing approaches to using data and research, public versus private service delivery, and financial goals and concerns resulted in distinct testing technologies, access, and timelines for NIPT adoption. Our analysis demonstrates the need for health policy researchers, policy makers, and others to move beyond analyses solely considering clinical and health economic evidence to understand the impact of political ideologies and governing styles.
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COVID-19 , Pandemias , Gravidez , Feminino , Humanos , Ontário , Quebeque , Pesquisa Qualitativa , COVID-19/diagnóstico , COVID-19/epidemiologia , Política de Saúde , Tecnologia BiomédicaRESUMO
BACKGROUND: Decision impact studies have become increasingly prevalent in cancer prognostic research in recent years. These studies aim to evaluate the impact of a genomic test on decision-making and appear to be a new form of evidence of clinical utility. The objectives of this review were to identify and characterize decision impact studies in genomic medicine in cancer care and categorize the types of clinical utility outcomes reported. METHODS: We conducted a search of four databases, Medline, Embase, Scopus and Web of Science, from inception to June 2022. Empirical studies that reported a "decision impact" assessment of a genomic assay on treatment decisions or recommendations for cancer patients were included. We followed scoping review methodology and adapted the Fryback and Thornbury Model to collect and analyze data on clinical utility. The database searches identified 1803 unique articles for title/abstract screening; 269 articles moved to full-text review. RESULTS: 87 studies met inclusion criteria. All studies were published in the last 12 years with the majority for breast cancer (72%); followed by other cancers (28%) (lung, prostate, colon). Studies reported on the impact of 19 different proprietary (18) and generic (1) assays. Across all four levels of clinical utility, outcomes were reported for 22 discrete measures, including the impact on provider/team decision-making (100%), provider confidence (31%); change in treatment received (46%); patient psychological impacts (17%); and costing or savings impacts (21%). Based on the data synthesis, we created a comprehensive table of outcomes reported for clinical utility. CONCLUSIONS: This scoping review is a first step in understanding the evolution and uses of decision impact studies and their influence on the integration of emerging genomic technologies in cancer care. The results imply that DIS are positioned to provide evidence of clinical utility and impact clinical practice and reimbursement decision-making in cancer care. Systematic review registration: Open Science Framework osf.io/hm3jr.
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Neoplasias da Mama , Masculino , Humanos , Prognóstico , Próstata , GenômicaRESUMO
The healthcare system is complex and requires effective leaders who can navigate team, organizational and system dynamics. The objectives of this study were to explore competencies required to lead emerging healthcare challenges and identify strategies for developing successful leaders. Semi-structured interviews were conducted with 12 healthcare leaders from the government, hospitals and in consulting. This study unpacks competencies such as communication and change management and draws attention to the significance of emotional intelligence and working with data that have not traditionally been identified as key competencies. These findings can inform curriculum and modernization initiatives in healthcare leadership programs.
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Currículo , Liderança , Atenção à Saúde , HumanosRESUMO
BACKGROUND: Choosing Wisely (CW) is an international movement comprised of campaigns in more than 20 countries to reduce low-value care (LVC). De-implementation, the reduction or removal of a healthcare practice that offers little to no benefit or causes harm, is an emerging field of research. Little is known about the factors which (i) sustain LVC; and (ii) the magnitude of the problem of LVC. In addition, little is known about the processes of de-implementation, and if and how these processes differ from implementation endeavours. The objective of this study was to explicate the myriad factors which impact the processes and outcomes of de-implementation initiatives that are designed to address national Choosing Wisely campaign recommendations. METHODS: Semi-structured interviews were conducted with individuals implementing Choosing Wisely Canada recommendations in healthcare settings in four provinces. The interview guide was developed using concepts from the literature and the Implementation Process Model (IPM) as a framework. All interviews were conducted virtually, recorded, and transcribed verbatim. Data were analysed using thematic analysis. FINDINGS: Seventeen Choosing Wisely team members were interviewed. Participants identified numerous provider factors, most notably habit, which sustain LVC. Contrary to reporting in recent studies, the majority of LVC in the sample was not 'patient facing'; therefore, patients were not a significant driver for the LVC, nor a barrier to reducing it. Participants detailed aspects of the magnitude of the problems of LVC, providing insight into the complexities and nuances of harm, resources and prevalence. Harm from potential or common infections, reactions, or overtreatment was viewed as the most significant types of harm. Unique factors influencing the processes of de-implementation reported were: influence of Choosing Wisely campaigns, availability of data, lack of targets and hard-coded interventions. CONCLUSIONS: This study explicates factors ranging from those which impact the maintenance of LVC to factors that impact the success of de-implementation interventions intended to reduce them. The findings draw attention to the significance of unintentional factors, highlight the importance of understanding the impact of harm and resources to reduce LVC and illuminate the overstated impact of patients in de-implementation literature. These findings illustrate the complexities of de-implementation.
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Cuidados de Baixo Valor , Sobretratamento , Canadá , Hospitais , Humanos , Pesquisa QualitativaRESUMO
BACKGROUND: There is recognition that the overuse of procedures, testing, and medications constitutes low-value care which strains the healthcare system and, in some circumstances, can cause unnecessary stress and harm for patients. Initiatives across dozens of countries have raised awareness about the harms of low-value care but have had mixed success and the levels of reductions realized have been modest. Similar to the complex drivers of implementation processes, there is a limited understanding of the individual and social behavioral aspects of de-implementation. While researchers have begun to use theory to elucidate the dynamics of de-implementation, the research remains largely atheoretical. The use of theory supports the understanding of how and why interventions succeed or fail and what key factors predict success. The purpose of this scoping review was to identify and characterize the use of theoretical approaches used to understand and/or explain what influences efforts to reduce low-value care. METHODS: We conducted a review of MEDLINE, EMBASE, CINAHL, and Scopus databases from inception to June 2021. Building on previous research, 43 key terms were used to search the literature. The database searches identified 1998 unique articles for which titles and abstracts were screened for inclusion; 232 items were selected for full-text review. RESULTS: Forty-eight studies met the inclusion criteria. Over half of the included articles were published in the last 2 years. The Theoretical Domains Framework (TDF) was the most commonly used determinant framework (n = 22). Of studies that used classic theories, the majority used the Theory of Planned Behavior (n = 6). For implementation theories, Normalization Process Theory and COM-B were used (n = 7). Theories or frameworks were used primarily to identify determinants (n = 37) and inform data analysis (n = 31). Eleven types of low-value care were examined in the included studies, with prescribing practices (e.g., overuse, polypharmacy, and appropriate prescribing) targeted most frequently. CONCLUSIONS: This scoping review provides a rigorous, comprehensive, and extensive synthesis of theoretical approaches used to understand and/or explain what factors influence efforts to reduce low-value care. The results of this review can provide direction and insight for future primary research to support de-implementation and the reduction of low-value care.
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Atenção à Saúde , Envio de Mensagens de Texto , Instalações de Saúde , HumanosRESUMO
Carers of people with dementia can experience reduced health and well-being, but little is known about how best to support them. There is some evidence to suggest that case management may improve outcomes for carers but less evidence about the features of case management services that can effectively support carers of people with dementia. Admiral Nursing operates a case management approach staffed by specialist nurses and is the only service of its kind in the United Kingdom dedicated to helping people with dementia and their carers. This paper reports qualitative findings from a mixed methods study of Admiral Nursing. For the qualitative strand of the project, data were collected in focus groups and in-depth interviews with carers of people with dementia (n = 35) and analysed thematically using the framework approach. The aim of this analysis was to understand differences between the experiences of the carers in our sample with and without Admiral Nursing, applying Freeman's model of continuity of care (Freeman et al., Continuity of care, 2000). Participants who had received Admiral Nursing were recruited from two geographical locations and carers without experience of this service were recruited from two different areas. We found that carers in our sample felt 'supported' in circumstances where they received an ongoing service from an Admiral Nurse or other professional with expertise in dementia who was able to develop a meaningful relationship with them over time. We conclude that ongoing support, expertise in dementia and a meaningful relationship are key features of relationship continuity common in carers' reports of feeling supported. Specialist nurses are well placed to provide this continuity.
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Cuidadores , Demência , Administração de Caso , Demência/terapia , Humanos , Pesquisa Qualitativa , Reino UnidoRESUMO
In Western dual-educated, male-female marriages, women who divorce face greater burdens because of decreased income and primary or sole responsibility for caring for children than men who divorce. Why, then, do these women initiate divorce more and fare better psychologically after a divorce than men? Here, we articulate an evolutionary mismatch perspective, informed by key findings in relationship science. We argue that mismatches between women's evolved preferences and configurations of modern marriage often clash, producing dissatisfaction. Women's unprecedented career ascendance also affords women ever more freedom to leave. We discuss pressures from social expectations for men and women that contribute to or compound these vulnerabilities. We conclude with key questions for future research, which can contribute to strategies for mitigating relationship dissatisfaction and the profound loss and pain that results from divorce.
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Divórcio , Casamento , Evolução Biológica , Criança , Feminino , Humanos , Renda , Masculino , Fatores SocioeconômicosRESUMO
BACKGROUND: There is general scarcity of research on key elements of implementation processes and the factors which impact implementation success. Implementation of healthcare interventions is a complex process. Tools to support implementation can facilitate this process and improve effectiveness of the interventions and clinical outcomes. Understanding the impact of implementation support tools is a critical aspect of this process. The objective of this study was to solicit knowledge and agreement from relevant implementation science and knowledge translation healthcare experts in order to develop a process model of key elements in the implementation process. METHODS: A two round, modified Delphi study involving international experts in knowledge translation and implementation (researchers, scientists, professors, decision-makers) was conducted. Participants rated and commented on all aspects of the process model, including the organization, content, scope, and structure. Delphi questions rated at 75% agreement or lower were reviewed and revised. Qualitative comments supported the restructuring and refinement. A second-round survey followed the same process as Round 1. RESULTS: Fifty-four experts participated in Round 1, and 32 experts participated in Round 2. Twelve percent (n = 6) of the Round 1 questions did not reach agreement. Key themes for revision and refinement were: stakeholder engagement throughout the process, iterative nature of the implementation process; importance of context; and importance of using guiding theories or frameworks. The process model was revised and refined based on the quantitative and qualitative data and reassessed by the experts in Round 2. Agreement was achieved on all items in Round 2 and the Delphi concluded. Additional feedback was obtained regarding terminology, target users and definition of the implementation process. CONCLUSIONS: High levels of agreement were attained for all sub-domains, elements, and sub-elements of the Implementation Process Model. This model will be used to develop an Implementation Support Tool to be used by healthcare providers to facilitate effective implementation and improved clinical outcomes.
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Atenção à Saúde , Pessoal de Saúde , Técnica Delphi , Humanos , Inquéritos e Questionários , Pesquisa Translacional BiomédicaRESUMO
OBJECTIVES: Life story work involves gathering information about a person, their history and interests, and producing a tangible output, usually a book. It is used increasingly in dementia care. However, theory about if, how, and why it affects outcomes is poorly developed, making the choice of evaluation methods and appropriate outcomes difficult. This article uses a systematic review to uncover theories of change and outcomes for life story work in dementia care. We describe the methods and their use in identifying appropriate outcomes for evaluative research, and their potential for improving evaluation of 'theory poor' interventions. METHODS: A systematic review, carried out using Centre for Reviews and Dissemination guidelines, searched for evidence on underlying theory, good practice, and effectiveness of life story work to inform a feasibility study for the formal evaluation of life story work in dementia care. For the theory element, a 'landscaping review' analysed the extracted text, using qualitative techniques and mind maps to uncover both explicit and implicit causal links between life story work and outcomes. We triangulated the review findings with qualitative research, which used focus groups with people with dementia, caregivers, and professionals that explored the outcomes that they would like to see from life story work. RESULTS: Of the 56 publications reviewed, only 16 were useful for the theory analysis. Six overarching outcomes were identified: the self-worth and empowerment of people with dementia, individual psychological outcomes, improved relationships between care staff and the individual with dementia, better care, more effective engagement of family members/carers within the care setting, and helping carers to cope. Twelve final theories linking these outcomes to life story work via a causal pathway were elicited. There was substantial overlap in the outcomes identified by the review and by carers, people with dementia, and professionals. Together, the results informed our choice of outcome measures for the pilot evaluation. CONCLUSIONS: This approach may enable researchers to identify and develop the theory necessary before evaluation of a complex intervention in other under- or un-theorized areas. It has the potential both to shorten development stages (and thereby costs) in intervention research and improve the intervention itself.
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Cuidadores/psicologia , Demência/terapia , Família/psicologia , Narração , Adaptação Psicológica , Mapeamento Encefálico , Humanos , Modelos TeóricosRESUMO
Reablement - or restorative care - is a central feature of many western governments' approaches to supporting and enabling older people to stay in their own homes and minimise demand for social care. Existing evidence supports this approach although further research is required to strengthen the certainty of conclusions being drawn. In countries where reablement has been rolled out nationally, an additional research priority - to develop an evidence base on models of delivery - is emerging. This paper reports a prospective cohort study of individuals referred to three English social care reablement services, each representing a different model of service delivery. Outcomes included healthcare- and social care-related quality of life, functioning, mental health and resource use (service costs, informal carer time, out-of-pocket costs). In contrast with the majority of other studies, self-report measures were the predominant source of outcomes and resource use data. Furthermore, no previous evaluation has used a global measure of mental health. Outcomes data were collected on entry to the service, discharge and 6 months post discharge. A number of challenges were encountered during the study and insufficient individuals were recruited in two research sites to allow a comparison of service models. Findings from descriptive analyses of outcomes align with previous studies and positive changes were observed across all outcome domains. Improvements observed at discharge were, for most, retained at 6 months follow-up. Patterns of change in functional ability point to the importance of assessing functioning in terms of basic and extended activities of daily living. Findings from the economic evaluation highlight the importance of collecting data on informal carer time and also demonstrate the viability of collecting resource use data direct from service users. The study demonstrates challenges, and value, of including self-report outcome and resource use measures in evaluations of reablement.
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Atividades Cotidianas/psicologia , Serviços de Saúde Comunitária/métodos , Serviços de Assistência Domiciliar/organização & administração , Vida Independente/psicologia , Qualidade de Vida/psicologia , Idoso , Idoso de 80 Anos ou mais , Cuidadores , Programas Governamentais/organização & administração , Humanos , Estudos ProspectivosRESUMO
Carers contribute essential support to enable people with dementia to continue living within the community. Admiral Nurses provide specialist dementia support for carers of people with dementia, including offering expert emotional support and guidance, and work to join up different parts of the health and social care system to address needs in a co-ordinated way. The cost-effectiveness of this service is not clear. We undertook a feasibility study to explore related outcomes and costs for these carers. A cross-sectional, clustered survey was undertaken in England in 2017, in areas with and without Admiral Nursing (AN). The survey questionnaire included questions on the characteristics of the carers and the person with dementia, outcomes (care-related quality of life [CRQoL], self-efficacy and subjective well-being), use of health and social care services, out-of-pocket costs and time spent on informal care. We used different econometric techniques to compare the outcomes and the costs of the carers with and without AN services: linear regression, propensity score matching and instrumental variables analysis. These techniques allowed us to control for differences in observed and unobserved characteristics between the two groups of carers which determined outcomes and costs. We concluded that AN services might have a positive effect on carers' CRQoL, self-efficacy and subjective well-being. Furthermore, we found little difference in costs between carers using AN and those using usual care, or in the costs of the people with dementia they care for. Our findings provided an initial indication as to whether AN services could be good value for money. The key limitation of the study was the difficulty in controlling for unobserved characteristics because of the cross-sectional nature of our observational data. To diminish this limitation, our survey could be used in future studies following carers with and without AN services over time.
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Cuidadores , Demência , Serviço Social/economia , Idoso , Análise Custo-Benefício , Aconselhamento , Estudos Transversais , Demência/enfermagem , Inglaterra , Estudos de Viabilidade , Feminino , Humanos , Masculino , Qualidade de Vida , Autoeficácia , Inquéritos e QuestionáriosRESUMO
BACKGROUND: There is recognition that the overuse of procedures, tests and medications strains the healthcare system financially and can cause unnecessary stress and harm to patients. In recent years, several initiatives have targeted the reduction or elimination of low-value practices in healthcare. Research suggests that passive interventions, such as the publication of guidelines, are often not sufficient to change behaviour and that active change interventions - interventions which actively implement strategies to change practices - are required to effect significant, sustained practice change. The purpose of this scoping review is to identify and characterise studies of active change interventions designed to reduce or eliminate low-value healthcare practices. METHODS: We will conduct a review of MEDLINE, EMBASE, CINAHL and Scopus databases from inception. Building on previous research, 40 key terms will be used to search literature. The screening process will be conducted separately by two researchers, with discrepancies resolved by a third. Empirical studies of active change interventions used to reduce or eliminate low-value practices will be included. Descriptive statistics and thematic analysis will be used to categorise the characteristics of the studies. ETHICS AND DISSEMINATION: Ethics approval is not required for this study. This scoping review will provide insights into the impact of several characteristics of active change interventions, including the number of interventions (single-faceted or multifaceted) and the level of implementation (individual or organisational). These results can provide guidance and direction for future research in de-implementation. The results will be disseminated through presentations at national and international conferences and the publication of a manuscript.
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Atenção à Saúde/normas , Uso Excessivo dos Serviços de Saúde/prevenção & controle , Análise Custo-Benefício , Pessoal de Saúde , Humanos , Inovação Organizacional , Projetos de Pesquisa , Literatura de Revisão como AssuntoRESUMO
INTRODUCTION AND HYPOTHESIS: To identify the association between the symptom severity and outcome of conservative management for OAB, SUI and MUI. Conservative treatments are recommended for overactive bladder (OAB), stress urinary incontinence (SUI) and mixed incontinence (MUI). It is unclear whether disease severity affects treatment outcome. METHODS: Patients receiving conservative management were reviewed. Disease-specific questionnaires (OAB-q SF, ICIQ-UI SF) and bladder diaries recorded baseline symptoms. Success was defined by Patient Global Impression of Improvement questionnaire (PGI-I) response of "very much better" or "much better". Non-parametric statistical tests and logistic regression were used. RESULTS: In 50 OAB patients success was associated with lower symptom severity [30 (0-80) vs. 80 (23-100), p = 0.0001], fewer urgency episodes [4 (0-12) vs. 6 (0-11), p = 0.032] and lower ICIQ-UI SF [5.5 (0-20) vs. 15 (0-21), p = 0.002], but higher QoL [67 (20-101) vs. 24 (6-58), p = 0.0001]. In 50 MUI patients, variables were fewer urgency episodes [3 (0-10) vs. 6 (0-16), p = 0.004] and lower ICIQ-UI [11 (1-18) vs. 15 (5-21), p = 0.03]. In 40 SUI patients, variables were fewer incontinence episodes [1 (0-4) vs. 2 (0-5), p = 0.05] and lower ICIQ-UI [11 (6-16) vs. 13.5 (11-19), p = 0.003]. Multiple regression confirmed OAB-q QoL [odds ratio (OR) 1.10 (95% confidence intervals 1.04, 1.1)] for OAB, urgency episodes [OR 0.74 (0.56, 0.98)] and ICIQ-UI [OR 0.83 (0.71, 0.98] for MUI and ICIQ-UI [OR 0.57 (0.40, 0.83)] for SUI. CONCLUSIONS: Milder baseline disease severity was associated with successful outcome. There is potential for triage at initial assessment to second-line interventions for women unlikely to achieve success.
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Tratamento Conservador/métodos , Índice de Gravidade de Doença , Bexiga Urinária Hiperativa/terapia , Incontinência Urinária por Estresse/terapia , Incontinência Urinária de Urgência/terapia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Pessoa de Meia-Idade , Qualidade de Vida , Inquéritos e Questionários , Resultado do TratamentoRESUMO
Epstein-Barr virus nuclear antigen 3C (EBNA3C) is a well-defined repressor of host gene expression in B cells transformed by Epstein-Barr virus (EBV) that cooperates with various cellular factors. It is established that EBNA3C interacts with the cellular factor RBPJ (RBP-Jκ or CBF1) through two distinct motifs: the TFGC motif, also called the homology domain (HD) motif, and the VWTP motif. In this study, we investigated the role of each motif in EBNA3C transcriptional repression activity by using two novel recombinant viruses with single RBPJ interaction motifs mutated (EBNA3C HDmut and EBNA3C W227S). Infection of primary B cells with either of these recombinant EBVs led to the successful establishment of lymphoblastoid cell lines (LCLs). Gene expression analysis showed that full repression of EBNA3C target genes is not achieved by EBNA3C HDmut compared to that with EBNA3C W227S or the EBNA3C wild type (WT). Focusing on the well-characterized EBNA3C-repressed genes COBLL1, ADAM28, and ADAMDEC1, we investigated the mechanism of EBNA3C-mediated transcriptional repression. Chromatin immunoprecipitation (ChIP) analysis indicated that EBNA3C HDmut is still able to recruit Polycomb proteins BMI1 and SUZ12 to COBLL1 as efficiently as EBNA3C WT does, leading to the full deposition of the repressive histone mark H3K27me3. However, we found that the activation-associated chromatin mark H3K4me3 is highly enriched at EBNA3C target genes in LCLs expressing EBNA3C HDmut. We show here that EBNA3C interacts with the histone lysine demethylase KDM2B and that this interaction is important for H3K4me3 removal and for the EBNA3C-mediated repression of COBLL1 and the ADAM28-ADAMDEC1 locus.IMPORTANCE EBV is a virus associated with human cancers and is well known for its ability to transform B lymphocytes into continuously proliferating lymphoblastoid cell lines. EBNA3C is considered an oncoprotein and has been shown to be essential for B cell transformation by EBV. EBNA3C is well characterized as a viral transcription factor, but very little is known about its mechanisms of action. In the present study, we demonstrate that removal of the activating histone mark H3K4me3 and deposition of the repressive mark H3K27me3 by EBNA3C on COBLL1 are achieved by at least two distinct mechanisms. Furthermore, we discovered that EBNA3C interacts with the lysine demethylase KDM2B and that this interaction is important for its transcriptional repressive function. The findings in this study provide new insights into the mechanism used by the oncoprotein EBNA3C to repress cellular target genes.
Assuntos
Proteínas ADAM/biossíntese , Antígenos Nucleares do Vírus Epstein-Barr/metabolismo , Proteínas F-Box/metabolismo , Histonas/metabolismo , Proteína de Ligação a Sequências Sinal de Recombinação J de Imunoglobina/metabolismo , Histona Desmetilases com o Domínio Jumonji/metabolismo , Fatores de Transcrição/biossíntese , Linfócitos B/metabolismo , Células Cultivadas , Imunoprecipitação da Cromatina , Antígenos Nucleares do Vírus Epstein-Barr/genética , Expressão Gênica/fisiologia , Humanos , Proteína de Ligação a Sequências Sinal de Recombinação J de Imunoglobina/genética , Proteínas de Neoplasias , Complexo Repressor Polycomb 1/metabolismo , Complexo Repressor Polycomb 2/metabolismoRESUMO
Objective To update a 2010 meta-review of systematic reviews of effective interventions to support carers of ill, disabled, or older adults. In this article, we report the most promising interventions based on the best available evidence. Methods Rapid meta-review of systematic reviews published from January 2009 to 2016. Results Sixty-one systematic reviews were included (27 high quality, 25 medium quality, and nine low quality). The quality of reviews has improved since the original review, but primary studies remain limited in quality and quantity. Fourteen high quality reviews focused on carers of people with dementia, four on carers of those with cancer, four on carers of people with stroke, three on carers of those at the end of life with various conditions, and two on carers of people with mental health problems. Multicomponent interventions featured prominently, emphasizing psychosocial or psychoeducational content, education and training. Improved outcomes for carers were reported for mental health, burden and stress, and wellbeing or quality of life. Negative effects were reported in reviews of respite care. As with earlier work, we found little robust evidence on the cost-effectiveness of reviewed interventions. Conclusions There is no 'one size fits all' intervention to support carers. There is potential for effective support in specific groups of carers, such as shared learning, cognitive reframing, meditation, and computer-delivered psychosocial support for carers of people with dementia. For carers of people with cancer, effective support may include psychosocial interventions, art therapy, and counselling. Carers of people with stroke may also benefit from counselling. More good quality, theory-based, primary research is needed.
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Cuidadores/psicologia , Depressão , Apoio Social , Doença Crônica , Aconselhamento/métodos , Depressão/psicologia , Depressão/terapia , Humanos , Transtornos MentaisRESUMO
People with mental health conditions have a lower life expectancy and poorer physical health outcomes than the general population. Evidence suggests this is due to a combination of clinical risk factors, socioeconomic factors, and health system factors, notably a lack of integration when care is required across service settings. Several recent reports have looked at ways to better integrate physical and mental health care for people with severe mental illness (SMI). We built on these by conducting a mapping review that looked for the most recent evidence and service models in this area. This involved searching the published literature and speaking to people involved in providing or using current services. Few of the identified service models were described adequately and fewer still were evaluated, raising questions about the replicability and generalisability of much of the existing evidence. However, some common themes did emerge. Efforts to improve the physical health care of people with SMI should empower staff and service users and help remove everyday barriers to delivering and accessing integrated care. In particular, there is a need for improved communication among professionals and better information technology to support them, greater clarity about who is responsible and accountable for physical health care, and greater awareness of the effects of stigmatisation on the wider culture and environment in which services are delivered.