Publications by authors named "Niamh McNamara"

Introduction: Remyelination of demyelinated axons can occur as an endogenous repair mechanism in multiple sclerosis (MS), but its efficacy varies between both MS individuals and lesions. The molecular and cellular mechanisms that drive remyelination remain poorly understood. Here, we studied the relation between microglia activation and remyelination activity in MS.

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Multiple sclerosis (MS) is a highly heterogeneous disease, with varying remyelination potential across individuals and between lesions. However, the molecular mechanisms underlying the potential to remyelinate remain poorly understood. In this study, we aimed to take advantage of the intrinsic heterogeneity in remyelinating capacity between MS donors and lesions to uncover known and novel pro-remyelinating molecules for MS therapies.

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Social prescribing is a healthcare model designed to reduce loneliness and improve individuals' health by addressing unmet social needs. The present study adopted the Social Cure framework to provide an understanding of the psychosocial processes involved in helping participants to engage with social activities, from both the link workers' and clients' perspectives. Semi-structured interviews were conducted with 15 link workers ( = 40.

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The structural integrity of myelin sheaths in the central nervous system (CNS) is crucial for the maintenance of its function. Electron microscopy (EM) is the gold standard for visualizing individual myelin sheaths. However, the tissue processing involved can induce artifacts such as shearing of myelin, which can be difficult to distinguish from true myelin abnormalities.

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Introduction: There have been few controlled evaluations of Social Prescribing (SP), in which link workers support lonely individuals to engage with community-based social activities. This study reports early outcomes of a trial comparing General Practitioner treatment-as-usual (TAU) with TAU combined with Social Prescribing (SP) in adults experiencing loneliness in Queensland.

Methods: Participants were 114 individuals who were non-randomly assigned to one of two conditions (SP,  = 63; TAU,  = 51) and assessed at baseline and 8 weeks, on primary outcomes (loneliness, well-being, health service use in past 2 months) and secondary outcomes (social anxiety, psychological distress, social trust).

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Myelin is required for the function of neuronal axons in the central nervous system, but the mechanisms that support myelin health are unclear. Although macrophages in the central nervous system have been implicated in myelin health, it is unknown which macrophage populations are involved and which aspects they influence. Here we show that resident microglia are crucial for the maintenance of myelin health in adulthood in both mice and humans.

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Social prescribing (or community referral) is a model of healthcare designed to address social needs that contribute to poor health. At the heart of social prescribing programs is the link worker, who liaises between clients, health professionals and community organisations. Social prescribing is newly emerging in Australia but there are already calls for a large-scale roll out.

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The economic crisis precipitated by the coronavirus disease (COVID-19) pandemic has placed considerable financial pressures on households across the world. These are compounded by the enforced isolation accompanying pandemic restrictions, during which individuals can struggle to access external assistance and often need to rely heavily on the social, emotional, and financial support of other family members. Previous research indicates that family financial stress has negative consequences for the mental health and well-being of members, but that heightened family identification can provide individuals with a stronger sense of collective financial resilience.

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Microglia, the resident myeloid cells in the central nervous system (CNS) play critical roles in shaping the brain during development, responding to invading pathogens, and clearing tissue debris or aberrant protein aggregations during ageing and neurodegeneration. The original concept that like macrophages, microglia are either damaging (pro-inflammatory) or regenerative (anti-inflammatory) has been updated to a kaleidoscope view of microglia phenotypes reflecting their wide-ranging roles in maintaining homeostasis in the CNS and, their contribution to CNS diseases, as well as aiding repair. The use of new technologies including single cell/nucleus RNA sequencing has led to the identification of many novel microglia states, allowing for a better understanding of their complexity and distinguishing regional variations in the CNS.

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In this issue of Neuron, Chen et al. (2021) reveal dynamic changes in myelin in an Alzheimer's disease (AD) mouse model. Enhancing myelination genetically or pharmacologically improves cognition in this model, supporting myelin as a therapeutic target for AD.

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Communities are vital sources of support during crisis, providing collective contexts for shared identity and solidarity that predict supportive, prosocial responses. The COVID-19 pandemic has presented a global health crisis capable of exerting a heavy toll on the mental health of community members while inducing unwelcome levels of social disconnection. Simultaneously, lockdown restrictions have forced vulnerable community members to depend upon the support of fellow residents.

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Levels of loneliness across the world have reached epidemic proportions, and their impact upon population health is increasingly apparent. In response, policies and initiatives have attempted to reduce loneliness by targeting social isolation among residents of local communities. Yet, little is known about the social psychological processes underpinning the relationships between community belonging, loneliness, and well-being.

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Objectives: Recovery from anorexia nervosa (AN) is difficult to define, and efforts to establish recovery criteria have led to several versions being proposed. Using the perspectives of people with histories of AN and therapists working in the field, we sought to explore the face validity of Khalsa et al (2017) as one of the most recent examples of proposed systematic recovery criteria.

Design: We interviewed 11 health service users (SUs) with histories of AN who had previously received treatment alongside 8 eating disorder therapists (EDTs), exploring their views on the proposed AN recovery criteria.

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The stressors of immigration detention and negative host country experiences make effective access to health care vital for migrant detainees, but little is known regarding the health experiences of this populations and the barriers to healthcare access. The present research investigates immigration detainees' experiences of health-related help-seeking in the distressing and stigmatised environment of UK immigration removal centres (IRCs), as well as staff members' experiences of providing help. Semi-structured interviews were conducted with 40 detainees and 21 staff and analysed using theoretical thematic analysis guided by the social identity approach.

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Background: Both anxiety and depression have been identified as negative health outcomes associated with the distressing nature of the Covid-19 pandemic, especially among young people. Within this age demographic, trans and gender diverse people may be particularly vulnerable to pandemic-related mental health outcomes, such as anxiety and depression, due to the social challenges, gender dissonance, and poor mental health they experience. Furthermore, the social distancing measures impose several unique social and help-seeking challenges which may further contribute to the worsening of mental health.

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We examined whether the Social Cure (SC) perspective explains the efficacy of a Social Prescribing (SP) pathway which addresses healthcare needs through enhancing social connections. Data were collected at pathway entry from patients with long-term health conditions, or who felt isolated/lonely/anxious ( = 630), then again 4 months later ( = 178), and 6-9 months later ( = 63). Being on the pathway was associated with increased group memberships between T0 and T1.

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Objectives: This study aimed to assess the degree to which the 'social cure' model of psychosocial health captures the understandings and experiences of healthcare staff and patients in a social prescribing (SP) pathway and the degree to which these psychosocial processes predict the effect of the pathway on healthcare usage.

Design: Mixed-methods: Study 1: semistructured interviews; study 2: longitudinal survey.

Setting: An English SP pathway delivered between 2017 and 2019.

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Background: Public opinion research shows that eating disorders (EDs) are a major target of stigmatisation. To understand the implications of this stigma, research investigating how stigma is experienced by individuals with EDs is critical.

Aim: This paper aims to collate, evaluate and synthesise the extant empirical research illuminating how people with EDs experience the stigma associated with their condition.

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Perinatal brain injury (PBI) to the developing white matter results in hypomyelination of axons and can cause long-term motor and cognitive deficits e.g. cerebral palsy.

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Background And Aims: Enteroendocrine L cells release satiety inducing hormones in response to stimulation by luminal macronutrients. We sought to profile the differential effect of macronutrient type and site of release on circulating concentrations of the L cell-derived enteroendocrine hormone peptide tyrosine tyrosine (amino acids 1 to 36) (PYY).

Materials And Methods: Eight healthy volunteers were recruited to a randomized, double-blinded, six-way crossover study.

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Attention is being given to healthcare initiatives with the potential to save money and improve lives. One example is social prescribing, which supports patients whose ill-health is exacerbated by loneliness. While evidence has accumulated attesting to social prescribing's efficacy, one limitation has been the lack of a theoretical framework, which limits understanding of how tackling loneliness improves health.

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In a context of international concern about early adult mental health service provision, this study identifies characteristics and service outcomes of young people with attention-deficit hyperactivity disorder (ADHD) reaching the child and adolescent mental health service (CAMHS) transition boundary (TB) in Ireland. The iTRACK study invited all 60 CAMHS teams in Ireland to participate; 8 teams retrospectively identified clinical case files for 62 eligible young people reaching the CAMHS TB in all 4 Health Service Executive Regions. A secondary case note analysis identified characteristics, co-morbidities, referral and service outcomes for iTRACK cases with ADHD (n = 20).

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Introduction: A significant barrier to recovery for individuals with co-morbid eating disorders and type 1 diabetes is the way in which group members self-categorise. Nonetheless, identity issues are neglected during the recovery process. The aim of this paper is to explore how group memberships (and the associated identities) both contribute to and hinder recovery in this cohort.

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