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1.
J Health Psychol ; 28(1): 3-16, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-35672937

RESUMO

The concept of 'Teachable Moment' (TM) is an increasingly used term within mainstream health psychology in relation to interventions and health behaviour change. It refers to a naturally occurring health event where individuals may be motivated to change their behaviours from unhealthy ones to healthier choices. Pregnancy is seen as a key time for behaviour change interventions, partly due to the idea that the mother has increased motivations to protect her unborn child. This paper proposes a Critical Health Psychological (CHP) re-examination of the concept and explores the 'teachable moment' within a wider framing of contemporary parenting ideologies in order to offer a more critical, nuanced and contextual consideration of pregnancy and the transition to motherhood. The paper locates these discussions using an example of alcohol usage in pregnancy. In doing so, this paper is the first of its kind to consider the 'teachable moment' from a critical health psychological perspective.


Assuntos
Medicina do Comportamento , Feminino , Gravidez , Humanos , Comportamentos Relacionados com a Saúde , Motivação , Etanol , Nível de Saúde
2.
Clin Perinatol ; 49(3): 641-655, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-36113927

RESUMO

According to the World Health Organization (WHO), 15 million babies are born preterm each year. Preterm infants are those born at less than 37 weeks, while extremely and very preterm neonates include those born at 22 to less than 32 weeks gestational age. Infants that fail to make it to term are missing a key part in neurodevelopment, as weeks 24 to 40 are a critical period of brain development. Neonatal brain injury is a crucial predictor for mortality and morbidity in premature and low birth weight (<1500 g) infants. Although the complications associated with preterm birth continue to be the number one cause of death in children under 5, the survival rates are increasing (Volpe, 2019). Despite this, the incidence of comorbidities, such as learning disabilities and visual and hearing problems, is still high. The functional deficits seen in these infants can be contributed to the white matter abnormalities (WMA) that have been found in 50% to 80% of extremely and very preterm neonates. While numerous, the etiology of the neonatal brain injury is essential for determining the mortality and morbidities of the infant, as there is an increased risk for both intraventricular hemorrhage (IVH) and periventricular leukomalacia (PVL), which can be attributed to their lack of cerebrovascular autoregulation and hypoxic events. Neuroimaging plays a key role in detecting and assessing these neurologic injuries that preterm infants are at risk for. It is essential to diagnose these events early on to assess neurologic damage, minimize disease progression, and provide supportive care. Brain MRI and cranial ultrasound (CUS) are both extensively used neuroimaging techniques to assess WMA, and it has become ever more important to determine the best imaging techniques and modalities with the increasing survival rates and high incidence of comorbidities among these infants.


Assuntos
Lesões Encefálicas , Doenças do Prematuro , Nascimento Prematuro , Criança , Feminino , Humanos , Lactente , Recém-Nascido de Baixo Peso , Recém-Nascido , Recém-Nascido Prematuro , Doenças do Prematuro/diagnóstico por imagem , Doenças do Prematuro/epidemiologia
4.
Nat Cancer ; 3(5): 629-648, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35422502

RESUMO

Diffuse midline gliomas (DMGs) bearing driver mutations of histone 3 lysine 27 (H3K27M) are incurable brain tumors with unique epigenomes. Here, we generated a syngeneic H3K27M mouse model to study the amino acid metabolic dependencies of these tumors. H3K27M mutant cells were highly dependent on methionine. Interrogating the methionine cycle dependency through a short-interfering RNA screen identified the enzyme methionine adenosyltransferase 2A (MAT2A) as a critical vulnerability in these tumors. This vulnerability was not mediated through the canonical mechanism of MTAP deletion; instead, DMG cells have lower levels of MAT2A protein, which is mediated by negative feedback induced by the metabolite decarboxylated S-adenosyl methionine. Depletion of residual MAT2A induces global depletion of H3K36me3, a chromatin mark of transcriptional elongation perturbing oncogenic and developmental transcriptional programs. Moreover, methionine-restricted diets extended survival in multiple models of DMG in vivo. Collectively, our results suggest that MAT2A presents an exploitable therapeutic vulnerability in H3K27M gliomas.


Assuntos
Neoplasias Encefálicas , Glioma , Metionina Adenosiltransferase/metabolismo , Animais , Neoplasias Encefálicas/genética , Epigenoma , Glioma/genética , Histonas/genética , Metionina/genética , Camundongos
5.
Health Psychol Behav Med ; 8(1): 234-247, 2020 Jul 23.
Artigo em Inglês | MEDLINE | ID: mdl-34040870

RESUMO

This paper outlines a qualitative methodological approach called Critical Discursive Psychology (CDP), considering its applicability to health psychology research. As applied to health psychology, the growth of discursive methodologies within the discipline tends to be located within a critical health psychology approach where CDP and others enable a consideration of how wider societal discourses shape understandings and experiences of health and illness. Despite the increasing usage of CDP as a methodology, little has been written on the practical application of the method to date, with papers instead focusing on the theoretical underpinnings of a CDP approach. This paper seeks to address that gap and offers a step by step guide to the key principles and analytic stages of CDP before giving a worked example of CDP applied to a health topic, in this case 'baby-led weaning' (BLW). As we discuss, a key strength of CDP, particularly in relation to health psychology, is in its attempts to understand both macro and micro levels of data analysis. By doing so it offers a nuanced and richer understanding of how particular health topics are working within context. Therefore, CDP is a readily applicable analytic approach to contested and complicated topic areas within health research.

6.
Cancer Res ; 79(16): 4026-4041, 2019 08 15.
Artigo em Inglês | MEDLINE | ID: mdl-31201162

RESUMO

Diffuse intrinsic pontine gliomas (DIPG) are incurable brain tumors with an aggressive onset. Apart from irradiation, there are currently no effective therapies available for patients with DIPG, who have a median survival time of less than one year. Most DIPG cells harbor mutations in genes encoding histone H3 (H3K27M) proteins, resulting in a global reduction of H3K27 trimethylation and activation of oncogenic signaling pathways. Here we show that the H3K27M mutations contribute to RAS pathway signaling, which is augmented by additional RAS activators including PDGFRA. H3K27M mutation led to increased expression of receptor tyrosine kinases (RTK). A RAS pathway functional screen identified ERK5, but not ERK1/2, as a RAS pathway effector important for DIPG growth. Suppression of ERK5 decreased DIPG cell proliferation and induced apoptosis in vitro and in vivo. In addition, depletion or inhibition of ERK5 significantly increased survival of mice intracranially engrafted with DIPG cells. Mechanistically, ERK5 directly stabilized the proto-oncogene MYC at the protein level. Collectively, our data demonstrate an underappreciated role of H3K27M in RAS activation and reveal novel therapeutic targets for treating DIPG tumors. SIGNIFICANCE: These findings identify the H3K27M mutation as an enhancer of RAS activation in DIPG and ERK5 as a novel, immediately actionable molecular target. GRAPHICAL ABSTRACT: http://cancerres.aacrjournals.org/content/canres/79/16/4026/F1.large.jpg.


Assuntos
Neoplasias do Tronco Encefálico/metabolismo , Glioma Pontino Intrínseco Difuso/metabolismo , Mutação , Proteínas ras/metabolismo , Compostos de Anilina/farmacologia , Animais , Neoplasias do Tronco Encefálico/tratamento farmacológico , Neoplasias do Tronco Encefálico/genética , Neoplasias do Tronco Encefálico/patologia , Linhagem Celular Tumoral , Proliferação de Células/genética , Glioma Pontino Intrínseco Difuso/tratamento farmacológico , Glioma Pontino Intrínseco Difuso/genética , Glioma Pontino Intrínseco Difuso/patologia , Feminino , Regulação Neoplásica da Expressão Gênica , Genes myc , Histonas/genética , Histonas/metabolismo , Humanos , Indóis/farmacologia , Lisina/genética , Lisina/metabolismo , Masculino , Camundongos SCID , Proteína Quinase 7 Ativada por Mitógeno/antagonistas & inibidores , Proteína Quinase 7 Ativada por Mitógeno/genética , Proteína Quinase 7 Ativada por Mitógeno/metabolismo , Células-Tronco Neurais/metabolismo , Proto-Oncogene Mas , Receptor alfa de Fator de Crescimento Derivado de Plaquetas/genética , Receptor alfa de Fator de Crescimento Derivado de Plaquetas/metabolismo , Proteínas ras/genética
7.
Psychol Health ; 33(10): 1209-1228, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-29974810

RESUMO

AIM: Our aim is to offer and illustrate a novel meta-methodology to enhance the rigour of method selection and understanding of results in pluralist qualitative research (PQR). METHOD: To do so, we make innovative use of articulation of four discrete dimensions characterising different forms of thematic analysis. We provide secondary analyses of an interview from the Social Media, Men who have Sex with Men and Sexual Health project using critical discursive psychology, dialogical analysis, interpretative phenomenological analysis and psychosocial narrative analysis. RESULTS: All four methods identified aspects of three central foci: Compartmentalisation, Detachment and Jouissance. CONCLUSION: We discuss how our proposed meta-methodology provides a rationale for the selection of methods in a PQR, offer evidence that it can anticipate the relative similarity in focus of the methods employed, and argue that our meta-methodology reveals the possibility of identifying an 'axial' or 'hub' method of a PQR which might be particularly fruitful in exploring commonalities and differences in results. Finally, we examine the synergies and challenges of combining pairs of the methods we used.


Assuntos
Pesquisa Qualitativa , Projetos de Pesquisa , Ajustamento Emocional , Infecções por HIV/psicologia , Homossexualidade Masculina/psicologia , Homossexualidade Masculina/estatística & dados numéricos , Humanos , Masculino , Pessoa de Meia-Idade , Mídias Sociais
8.
Matern Child Nutr ; 13(4)2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-28194883

RESUMO

Considerable effort has been made in recent years to gain a better understanding of the effectiveness of different interventions for supporting breastfeeding. However, research has tended to focus primarily on measuring outcomes and has paid comparatively little attention to the relational, organizational, and wider contextual processes that may impact delivery of an intervention. Supporting a woman with breastfeeding is an interpersonal encounter that may play out differently in different contexts, despite the apparently consistent aims and structure of an intervention. We consider the limitations of randomized controlled trials for building understanding of the ways in which different components of an intervention may impact breastfeeding women and how the messages conveyed through interactions with breastfeeding supporters might be received. We argue that qualitative methods are ideally suited to understanding psychosocial processes within breastfeeding interventions and have been underused. After briefly reviewing qualitative research to date into experiences of receiving and delivering breastfeeding support, we discuss the potential of theoretically informed qualitative methodologies to provide fuller understanding of intervention processes by focusing on three examples: phenomenology, ethnography, and discourse analysis. The paper concludes by noting some of the epistemological differences between the broadly positivist approach of trials and qualitative methodologies, and we suggest there is a need for further dialog as to how researchers might bridge these differences in order to develop a fuller and more holistic understanding of how best to support breastfeeding women.


Assuntos
Aleitamento Materno/psicologia , Apoio Social , Antropologia Cultural , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Pesquisa Qualitativa , Ensaios Clínicos Controlados Aleatórios como Assunto
9.
J Health Psychol ; 21(12): 3079-3091, 2016 12.
Artigo em Inglês | MEDLINE | ID: mdl-26150430

RESUMO

This study explored the perspectives of Black men, originally from East Africa, living in the United Kingdom and their partners on what it means to live with diagnosed HIV. This article reports on concealment of HIV-positive status as a strategy adopted by the affected participants to manage the flow of information about their HIV-positive status. Analysis of the data, collected using in-depth interviews involving 23 participants, found widespread selective concealment of HIV-positive status. However, a few respondents had 'come out' publicly about their condition. HIV prevention initiatives should recognise concealment as a vital strategy in managing communication about one's HIV-positive status.


Assuntos
População Negra/psicologia , Comunicação , Emigrantes e Imigrantes/psicologia , Infecções por HIV/psicologia , Parceiros Sexuais/psicologia , Estigma Social , Adulto , População Negra/etnologia , População Negra/estatística & dados numéricos , Emigrantes e Imigrantes/estatística & dados numéricos , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários , Reino Unido/etnologia
10.
Cochrane Database Syst Rev ; (4): CD006037, 2015 Apr 02.
Artigo em Inglês | MEDLINE | ID: mdl-25835053

RESUMO

BACKGROUND: Illicit drug use in pregnancy is a complex social and public health problem. The consequences of drug use in pregnancy are high for both the woman and her child. Therefore, it is important to develop and evaluate effective treatments. There is evidence for the effectiveness of psychosocial interventions in drug treatment but it is unclear whether they are effective in pregnant women. This is an update of a Cochrane review originally published in 2007. OBJECTIVES: To evaluate the effectiveness of psychosocial interventions in pregnant women enrolled in illicit drug treatment programmes on birth and neonatal outcomes, on attendance and retention in treatment, as well as on maternal and neonatal drug abstinence. In short, do psychosocial interventions translate into less illicit drug use, greater abstinence, better birth outcomes, or greater clinic attendance? SEARCH METHODS: We conducted the original literature search in May 2006 and performed the search update up to January 2015. For both review stages (original and update), we searched the Cochrane Drugs and Alcohol Group Trial's register (May 2006 and January 2015); the Cochrane Central Register of Trials (CENTRAL; the Cochrane Library 2015, Issue 1); PubMed (1996 to January 2015); EMBASE (1996 to January 2015); and CINAHL (1982 to January 2015). SELECTION CRITERIA: We included randomized controlled trials comparing any psychosocial intervention vs. a control intervention that could include pharmacological treatment, such as methadone maintenance, a different psychosocial intervention, counselling, prenatal care, STD counselling and testing, transportation, or childcare. DATA COLLECTION AND ANALYSIS: We used standard methodological procedures expected by the Cochrane Collaboration. We performed analyses based on three comparisons: any psychosocial intervention vs. control, contingency management (CM) interventions vs. control, and motivational interviewing based (MIB) interventions vs. MAIN RESULTS: In total, we included 14 studies with 1298 participants: nine studies (704 participants) compared CM vs. control, and five studies (594 participants) compared MIB interventions vs. CONTROL: We did not find any studies that assessed other types of psychosocial interventions. For the most part, it was unclear if included studies adequately controlled for biases within their studies as such information was not often reported. We assessed risk of bias in the included studies relating to participant selection, allocation concealment, personnel and outcome assessor blinding, and attrition.The included trials rarely captured maternal and neonatal outcomes. For studies that did measure such outcomes, no difference was observed in pre-term birth rates (RR 0.71, 95% confidence interval (CI) 0.34 to 1.51; three trials, 264 participants, moderate quality evidence), maternal toxicity at delivery (RR 1.18, 95% CI 0.52 to 2.65; two trials, 217 participants, moderate quality evidence), or low birth weight (RR 0.72, 95% CI 0.36 to 1.43; one trial, 160 participants, moderate quality evidence). However, the results did show that neonates remained in hospital for fewer days after delivery in CM intervention groups (RR -1.27, 95% CI -2.52 to -0.03; two trials, 103 participants, moderate quality evidence). There were no differences observed at the end of studies in retention or abstinence (as assessed by positive drug test at the end of treatment) in any psychosocial intervention group compared to control (Retention: RR 0.99, 95% CI 0.93 to 1.06, nine trials, 743 participants, low quality evidence; and Abstinence: RR 1.14, 95% CI 0.75 to 1.73, three trials, 367 participants, low quality evidence). These results held for both CM and MIB combined. Overall, the quality of the evidence was low to moderate. AUTHORS' CONCLUSIONS: The present evidence suggests that there is no difference in treatment outcomes to address drug use in pregnant women with use of psychosocial interventions, when taken in the presence of other comprehensive care options. However, few studies evaluated obstetrical or neonatal outcomes and rarely did so in a systematic way, making it difficult to assess the effect of psychosocial interventions on these clinically important outcomes. It is important to develop a better evidence base to evaluate psychosocial modalities of treatment in this important population.


Assuntos
Complicações na Gravidez/terapia , Gestantes/psicologia , Psicoterapia , Transtornos Relacionados ao Uso de Substâncias/terapia , Feminino , Humanos , Recém-Nascido , Tempo de Internação , Pacientes Desistentes do Tratamento/estatística & dados numéricos , Gravidez , Complicações na Gravidez/psicologia , Resultado da Gravidez , Nascimento Prematuro/epidemiologia , Ensaios Clínicos Controlados Aleatórios como Assunto , Reforço Psicológico , Transtornos Relacionados ao Uso de Substâncias/psicologia
11.
J Health Psychol ; 15(8): 1214-24, 2010 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-20472606

RESUMO

Childbirth is seen as a medical event, and pregnancy, a time when parents-to-be are in need of advice. This article provides a discursive analysis of how such advice is given in antenatal classes. Using audio-recorded data from National Childbirth Trust (NCT) antenatal classes, we analyse how class leaders talk to class members about pregnancy, childbirth and infant care. We identify a pattern of advice giving in which class leaders construct 'golden age' or 'bad old days' stories variably to contrast the practices of the past ('then') with current practices ('now'). These contrasting repertoires operate against a backdrop of medicalization and societal expectations that are both current and out-dated, providing a constitutive framework to support class leaders' evaluations and advice on pregnancy, childbirth and infant care.


Assuntos
Aconselhamento , Cuidado Pré-Natal , Feminino , Humanos , Entrevistas como Assunto , Gravidez , Gravação em Fita
12.
J Health Psychol ; 14(3): 435-46, 2009 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19293305

RESUMO

This article is an analysis of talk in breastfeeding workshops that are part of National Childbirth Trust antenatal classes. Using audio-recordings from breastfeeding workshops antenatal classes, the data were analysed using a qualitative, discursive methodology based in part on the premises outlined by Potter and Wetherell (1987) and Edwards and Potter (1992, 2001). The analysis demonstrates how there are two main discourses of breastfeeding constructed by the breastfeeding counsellor-breastfeeding as natural, and breastfeeding as learnt. In particular, it notes how these two main discourses of breastfeeding that are seemingly in competition with one another, operate concurrently within the teaching of breastfeeding, and enable the breastfeeding counsellor to manage issues and concerns around breastfeeding.


Assuntos
Aleitamento Materno , Comunicação , Educação , Feminino , Humanos , Gravidez , Ensino , Reino Unido
13.
Br J Soc Psychol ; 42(Pt 2): 239-56, 2003 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-12869247

RESUMO

We examine links between factual recall, emotion and constructions of normativity in narrative accounts, using as an empirical case President Clinton's descriptions of his relationship with Monica Lewinsky. We analyse those accounts in the sequences of talk in which they occurred, under Grand Jury cross-examination. Clinton's accounts of Lewinsky were part of how he attended to issues alive in court concerning himself, including his possible exploitation and abuse of power in an asymmetrical relationship; his motives, sincerity, credibility and intentions; and, indirectly, his fitness for office as President. Analysis focuses on how Clinton's portrayal of Lewinsky accomplished a reflexive portrayal of himself, not as mendacious and exploitative, but as caring, responsible, sincere, rational and consistent, while reducing the scope and implications of their admitted sexual relationship. This study is linked to a broader discursive psychology of factual description, memory, mental and emotional states, and their relevance to the larger business of institutional settings.


Assuntos
Teoria Psicológica , Predomínio Social , Humanos
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