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Paraspeckles are ribonucleoprotein granules assembled by NEAT1_2 lncRNA, an isoform of Nuclear Paraspeckle Assembly Transcript 1 (NEAT1). Dysregulation of NEAT1_2/paraspeckles has been linked to multiple human diseases making them an attractive drug target. However currently NEAT1_2/paraspeckle-focused translational research and drug discovery are hindered by a limited toolkit. To fill this gap, we developed and validated a set of tools for the identification of NEAT1_2 binders and modulators comprised of biochemical and cell-based assays. The NEAT1_2 triple helix stability element was utilized as the target in the biochemical assays, and the cellular assay ('ParaQuant') was based on high-content imaging of NEAT1_2 in fixed cells. As a proof of principle, these assays were used to screen a 1,200-compound FDA-approved drug library and a 170-compound kinase inhibitor library and to confirm the screening hits. The assays are simple to establish, use only commercially-available reagents and are scalable for higher throughput. In particular, ParaQuant is a cost-efficient assay suitable for any cells growing in adherent culture and amenable to multiplexing. Using ParaQuant, we identified dual PI3K/mTOR inhibitors as potent negative modulators of paraspeckles. The tools we describe herein should boost paraspeckle studies and help guide the search, validation and optimization of NEAT1_2/paraspeckle-targeted small molecules.
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Núcleo Celular , Paraspeckles , ARN Largo no Codificante , Humanos , Núcleo Celular/genética , Paraspeckles/efectos de los fármacos , Paraspeckles/genética , ARN Largo no Codificante/genética , ARN Largo no Codificante/química , Inhibidores de Proteínas Quinasas/farmacología , Descubrimiento de DrogasRESUMEN
BACKGROUND: Acceptable, effective and feasible support strategies (interventions) for parents experiencing complex post-traumatic stress disorder (CPTSD) symptoms or with a history of childhood maltreatment may offer an opportunity to support parental recovery, reduce the risk of intergenerational transmission of trauma and improve life-course trajectories for children and future generations. However, evidence relating to the effect of interventions has not been synthesised to provide a comprehensive review of available support strategies. This evidence synthesis is critical to inform further research, practice and policy approaches in this emerging area. OBJECTIVES: To assess the effects of interventions provided to support parents who were experiencing CPTSD symptoms or who had experienced childhood maltreatment (or both), on parenting capacity and parental psychological or socio-emotional wellbeing. SEARCH METHODS: In October 2021 we searched CENTRAL, MEDLINE, Embase, six other databases and two trials registers, together with checking references and contacting experts to identify additional studies. SELECTION CRITERIA: All variants of randomised controlled trials (RCTs) comparing any intervention delivered in the perinatal period designed to support parents experiencing CPTSD symptoms or with a history of childhood maltreatment (or both), to any active or inactive control. Primary outcomes were parental psychological or socio-emotional wellbeing and parenting capacity between pregnancy and up to two years postpartum. DATA COLLECTION AND ANALYSIS: Two review authors independently assessed the eligibility of trials for inclusion, extracted data using a pre-designed data extraction form, and assessed risk of bias and certainty of evidence. We contacted study authors for additional information as required. We analysed continuous data using mean difference (MD) for outcomes using a single measure, and standardised mean difference (SMD) for outcomes using multiple measures, and risk ratios (RR) for dichotomous data. All data are presented with 95% confidence intervals (CIs). We undertook meta-analyses using random-effects models. MAIN RESULTS: We included evidence from 1925 participants in 15 RCTs that investigated the effect of 17 interventions. All included studies were published after 2005. Interventions included seven parenting interventions, eight psychological interventions and two service system approaches. The studies were funded by major research councils, government departments and philanthropic/charitable organisations. All evidence was of low or very low certainty. Parenting interventions Evidence was very uncertain from a study (33 participants) assessing the effects of a parenting intervention compared to attention control on trauma-related symptoms, and psychological wellbeing symptoms (postpartum depression), in mothers who had experienced childhood maltreatment and were experiencing current parenting risk factors. Evidence suggested that parenting interventions may improve parent-child relationships slightly compared to usual service provision (SMD 0.45, 95% CI -0.06 to 0.96; I2 = 60%; 2 studies, 153 participants; low-certainty evidence). There may be little or no difference between parenting interventions and usual perinatal service in parenting skills including nurturance, supportive presence and reciprocity (SMD 0.25, 95% CI -0.07 to 0.58; I2 = 0%; 4 studies, 149 participants; low-certainty evidence). No studies assessed the effects of parenting interventions on parents' substance use, relationship quality or self-harm. Psychological interventions Psychological interventions may result in little or no difference in trauma-related symptoms compared to usual care (SMD -0.05, 95% CI -0.40 to 0.31; I2 = 39%; 4 studies, 247 participants; low-certainty evidence). Psychological interventions may make little or no difference compared to usual care to depression symptom severity (8 studies, 507 participants, low-certainty evidence, SMD -0.34, 95% CI -0.66 to -0.03; I2 = 63%). An interpersonally focused cognitive behavioural analysis system of psychotherapy may slightly increase the number of pregnant women who quit smoking compared to usual smoking cessation therapy and prenatal care (189 participants, low-certainty evidence). A psychological intervention may slightly improve parents' relationship quality compared to usual care (1 study, 67 participants, low-certainty evidence). Benefits for parent-child relationships were very uncertain (26 participants, very low-certainty evidence), while there may be a slight improvement in parenting skills compared to usual care (66 participants, low-certainty evidence). No studies assessed the effects of psychological interventions on parents' self-harm. Service system approaches One service system approach assessed the effect of a financial empowerment education programme, with and without trauma-informed peer support, compared to usual care for parents with low incomes. The interventions increased depression slightly (52 participants, low-certainty evidence). No studies assessed the effects of service system interventions on parents' trauma-related symptoms, substance use, relationship quality, self-harm, parent-child relationships or parenting skills. AUTHORS' CONCLUSIONS: There is currently a lack of high-quality evidence regarding the effectiveness of interventions to improve parenting capacity or parental psychological or socio-emotional wellbeing in parents experiencing CPTSD symptoms or who have experienced childhood maltreatment (or both). This lack of methodological rigour and high risk of bias made it difficult to interpret the findings of this review. Overall, results suggest that parenting interventions may slightly improve parent-child relationships but have a small, unimportant effect on parenting skills. Psychological interventions may help some women stop smoking in pregnancy, and may have small benefits on parents' relationships and parenting skills. A financial empowerment programme may slightly worsen depression symptoms. While potential beneficial effects were small, the importance of a positive effect in a small number of parents must be considered when making treatment and care decisions. There is a need for further high-quality research into effective strategies for this population.
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Trastornos por Estrés Postraumático , Femenino , Embarazo , Humanos , Trastornos por Estrés Postraumático/terapia , Padres/educación , Psicoterapia/métodos , Madres/educación , Mujeres EmbarazadasRESUMEN
The aim of this research was to describe the evidence examining the approaches taken by mental health providers (MHPs) and chaplains to address symptoms related to moral injury (MI) or exposure to potentially morally injurious events (PMIEs). This research also considers the implications for a holistic approach to address symptoms related to MI that combines mental health and chaplaincy work. A scoping review of literature was conducted using Medline, PsycINFO, Embase, Central Register of Controlled Trials, Proquest, Philosphers Index, CINAHL, SocINDEX, Academic Search Complete, Web of Science and Scopus databases using search terms related to MI and chaplaincy approaches or psychological approaches to MI. The search identified 35 eligible studies: 26 quantitative studies and nine qualitative studies. Most quantitative studies (n = 33) were conducted in military samples. The studies examined interventions delivered by chaplains (n = 5), MHPs (n = 23) and combined approaches (n = 7). Most studies used symptoms of post-traumatic stress disorder (PTSD) and/or depression as primary outcomes. Various approaches to addressing MI have been reported in the literature, including MHP, chaplaincy and combined approaches, however, there is currently limited evidence to support the effectiveness of any approach. There is a need for high quality empirical studies assessing the effectiveness of interventions designed to address MI-related symptoms. Outcome measures should include the breadth of psychosocial and spiritual impacts of MI if we are to establish the benefits of MHP and chaplaincy approaches and the potential incremental value of combining both approaches into a holistic model of care.
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Personal Militar , Trastornos por Estrés Postraumático , Clero , Humanos , Salud Mental , Principios Morales , Trastornos por Estrés Postraumático/psicologíaRESUMEN
Background: People with severe asthma experience frequent life-threatening acute asthma events. A Lancet commission recently highlighted that terms "exacerbations" and "flare-ups" are seen to trivialize these episodes and recommended use of the term "attacks." Clinicians however, preferentially use the term "exacerbation" and some guidelines recommend the use of "exacerbation" with patients.Objective: This descriptive qualitative study aimed to understand the patient's experience and perspectives of these events and language used to describe them.Methods: Semi-structured one-on-one interviews were conducted in Australia and the UK in 18 people with severe asthma and 10 with mild-moderate asthma regarding their usage and preferences for such terminologies. Additionally, nine people with severe asthma participated in two focus groups in which use of preferred terminology was explored.Results: Mean age of participants was 57 ± 14.03 yr and 65% were female. A total 67 quotes were recorded in which 16 participants with severe asthma spontaneously used either the term "attack," "flare-up" and/or "exacerbation." Of these quotes, all 16 participants used "attack," one used all three terms and two used both "exacerbation" and "attack." The term "attack" was used to describe frightening events having major impacts on participant's lives, whereas "exacerbation" and "flare-up" were used to refer to both severe and mild, transient asthma-related events.Conclusion: Usage of the term "attack" was preferred by patients with severe asthma. Adoption of this language may assist in patient-clinician communication and disease management and outcomes. Wider stakeholder engagement is needed to confirm this suggestion. AbbreviationsFEV1forced expiratory volume in 1 secondATSAmerican Thoracic SocietyERSEuropean Respiratory SocietyACQAsthma Control QuestionnaireICSinhaled corticosteroidsOCSoral corticosteroidsBTSBritish Thoracic SocietySIGNScottish Intercollegiate Guidelines NetworkWAPwritten action plan.
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Asma/fisiopatología , Asma/psicología , Gravedad del Paciente , Terminología como Asunto , Adulto , Anciano , Asma/tratamiento farmacológico , Australia , Progresión de la Enfermedad , Femenino , Humanos , Entrevistas como Asunto , Masculino , Persona de Mediana Edad , Investigación Cualitativa , Pruebas de Función RespiratoriaRESUMEN
HIV-specific CD8+ T-cell responses limit viral replication in untreated infection. After the initiation of antiretroviral therapy (ART), these responses decay and the infected cell population that remains is commonly considered to be invisible to T-cells. We hypothesized that HIV antigen recognition may persist in ART-treated individuals due to low-level or episodic protein expression. We posited that if persistent recognition were occurring it would be preferentially directed against the early HIV gene products Nef, Tat, and Rev as compared to late gene products, such as Gag, Pol, and Env, which have higher barriers to expression. Using a primary cell model of latency, we observed that a Nef-specific CD8+ T-cell clone exhibited low-level recognition of infected cells prior to reactivation and robust recognition shortly thereafter. A Gag-specific CD8+ T-cell clone failed to recognized infected cells under these conditions, corresponding with a lack of detectable Gag expression. We measured HIV-specific T-cell responses in 96 individuals who had been suppressed on ART for a median of 7 years, and observed a significant, direct correlation between cell-associated HIV DNA levels and magnitudes of IFN-γ-producing Nef/Tat/Rev-specific T-cell responses. This correlation was confirmed in an independent cohort (n = 18). Correlations were not detected between measures of HIV persistence and T-cell responses to other HIV antigens. The correlation with Nef/Tat/Rev-specific T-cells was attributable to Nef-specific responses, the breadth of which also correlated with HIV DNA levels. These results suggest that ongoing Nef expression in ART-treated individuals drives preferential maintenance and/or expansion of T-cells reactive to this protein, implying sensing of infected cells by the immune system. The direct correlation, however, suggests that recognition does not result in efficient elimination of infected cells. These results raise the possibility that enhancing the cytolytic activity of Nef-specific T-cells may lead to reductions in infected cell frequencies, even in the absence of therapeutic latency reversal.
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Linfocitos T CD8-positivos/inmunología , Infecciones por VIH/inmunología , Latencia del Virus/inmunología , Productos del Gen nef del Virus de la Inmunodeficiencia Humana/inmunología , Antirretrovirales/uso terapéutico , Ensayo de Immunospot Ligado a Enzimas , Infecciones por VIH/tratamiento farmacológico , Humanos , Reacción en Cadena de la PolimerasaRESUMEN
It is largely unrecognised that the impacts of asthma are different in patients with severe disease compared with patients with mild to moderate disease. Severe asthma is associated with a significant health-related quality of life (HRQoL) burden due to excessive symptoms, frequent and life-threatening attacks, increased comorbidity burden, and high pharmacological treatment requirements. Interventions aimed at improving HRQoL need to be specifically tested in populations with severe asthma, including multicomponent interventions targeting the many clinical characteristics associated with the disease. It is necessary to have patient-reported outcome measures developed specifically for severe asthma. Public health messages recognising the significant burden of severe asthma on quality of life are needed.
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Asma/psicología , Costo de Enfermedad , Calidad de Vida , Antiasmáticos/uso terapéutico , Humanos , Cumplimiento de la Medicación/psicología , Encuestas y CuestionariosRESUMEN
Post-stroke patients describe suffering from persistent and unremitting levels of distress. Using an experimental model of focal cortical ischemia in adult male C57BL/6 mice, we examined whether exposure to chronic stress could modify the development of secondary thalamic neurodegeneration (STND), which is commonly reported to be associated with impaired functional recovery. We were particularly focused on the modulatory role of microglia-like cells, as several clinical studies have linked microglial activation to the development of STND. One month following the induction of cortical ischemia we identified that numbers of microglial-like cells, as well as putative markers of microglial structural reorganization (Iba-1), complement processing (CD11b), phagocytosis (CD68), and antigen presentation (MHC-II) were all significantly elevated in response to occlusion. We further identified that these changes co-occurred with a decrease in the numbers of mature neurons within the thalamus. Occluded animals that were also exposed to chronic stress exhibited significantly lower levels of Iba-1 positive cells and a reduced expression of Iba-1 and CD11b compared to the 'occlusion-alone' group. Interestingly, the dampened expression of microglial/monocyte markers observed in stressed animals was associated with significant additional loss of neurons. These findings indicate that the process of STND can be negatively modified, potentially in a microglial dependent manner, by exposure to chronic stress.
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Isquemia Encefálica/patología , Microglía/patología , Corteza Motora/patología , Degeneración Nerviosa/patología , Neuronas/patología , Estrés Fisiológico/fisiología , Estrés Psicológico/patología , Tálamo/patología , Animales , Antígenos CD/metabolismo , Antígenos de Diferenciación Mielomonocítica/metabolismo , Isquemia Encefálica/metabolismo , Antígeno CD11b/metabolismo , Proteínas de Unión al Calcio/metabolismo , Recuento de Células , Modelos Animales de Enfermedad , Genes MHC Clase II , Activación de Macrófagos , Masculino , Ratones , Ratones Endogámicos C57BL , Proteínas de Microfilamentos/metabolismo , Microglía/metabolismo , Corteza Motora/metabolismo , Degeneración Nerviosa/metabolismo , Neuronas/metabolismo , Recuperación de la Función/fisiología , Estrés Psicológico/metabolismo , Tálamo/metabolismoRESUMEN
Microglia are unique cells within the central nervous system because of their biophysical independence. As a result of this unusual property the cells must undergo significant structural remodelling in order to engage and connect with other elements within the central nervous system. Efficient remodelling is required for all activities that microglia are involved in ranging from monitoring synaptic information flow through to phagocytosis of tissue debris. Despite the fact that morphological remodelling is a pre-requisite to all microglial activities, relatively little research has been undertaken on the topic. This review examines what is known about how microglia transform themselves during development, under physiological conditions in response to changes in neuronal activity, and under pathological circumstances. Specific attention is given to exploring a variety of models that have been proposed to account for microglial transformation as well as the signals that are known to trigger these transformations.
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Microglía/citología , Microglía/fisiología , Animales , Humanos , Modelos Neurológicos , Enfermedades del Sistema Nervioso/patologíaRESUMEN
BACKGROUND: Several factors need to be considered when selecting a screening tool for depression including accuracy, level of burden for patients and for staff to administer and follow-up. OBJECTIVE: This study aimed to explore the utility of a single self-assessment item in identifying possible cases of depression in primary care by examining sensitivity and specificity with the nine-item Patient Health Questionnaire (PHQ-9) at different thresholds. DESIGN: Cross-sectional survey presented on a touchscreen computer. PARTICIPANTS: Adult patients attending 12 urban general practices in Australia completed a health status questionnaire (n = 1004). MAIN MEASURES: Depression was assessed by the PHQ-9 and a single self-assessment item. Sensitivity, specificity, and positive and negative predictive values were calculated for the single item using a PHQ-9 score of 10 or more as the criterion value. KEY RESULTS: A total of 1004 participants (61% female, 48% aged 55 years or older) completed both the PHQ-9 and a single self-assessment item. When using a threshold of mild depression or greater, the single item had adequate specificity (76%, 95% CI: 71-80%), with 76 out of every 100 people defined as non-depressed by the PHQ-9 also identified as not depressed by the single item. Sensitivity was high (91%, 95% CI: 84-95%), with the single item identifying 91 out of every 100 true cases (as defined by the PHQ-9). CONCLUSIONS: The single self-assessment item has high sensitivity and moderate specificity to identify possible cases of depression when used at a threshold of mild depression or greater.
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BACKGROUND: It may be challenging for researchers to recruit enough participants to have a diverse and representative sample for their studies. Usual recruitment methods that were historically effective can be difficult to use because of high costs, time constraints and geographical limitations. Social media is a low-cost, time-saving alternative. AIM: To summarise the benefits and challenges of using social media for recruitment. DISCUSSION: This article provides an overview of social media. It considers the advantages of social media for recruitment, including its cost-effectiveness, accessibility, speed and potential exposure for researchers. It also discusses the challenges of using social media for recruitment, including ethical ambiguity, homogenous sampling and questionable validity of information gathered. CONCLUSION: Using social media for research saves time and reduces costs, increasing access to hard-to-reach populations and the reach of recruitment efforts. IMPLICATIONS FOR PRACTICE: Options for researchers wishing to use social media for study recruitment are outlined, as are strategies for managing some of the challenges involved in this recruitment method.
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Medios de Comunicación Sociales , Humanos , Selección de Paciente , Investigadores , Presión del TiempoRESUMEN
INTRODUCTION: Complex trauma can have serious impacts on the health and well-being of Aboriginal and Torres Strait Islander families. The perinatal period represents a 'critical window' for recovery and transforming cycles of trauma into cycles of healing. The Healing the Past by Nurturing the Future (HPNF) project aims to implement and evaluate a programme of strategies to improve support for Aboriginal and Torres Strait islander families experiencing complex trauma. METHOD: The HPNF programme was codesigned over 4 years to improve awareness, support, recognition and assessment of trauma. Components include (1) a trauma-aware, healing-informed training and resource package for service providers; (2) trauma-awareness resources for parents; (3) organisational readiness assessment; (4) a database for parents and service providers to identify accessible and appropriate additional support and (5) piloting safe recognition and assessment processes. The programme will be implemented in a large rural health service in Victoria, Australia, over 12 months. Evaluation using a mixed-methods approach will assess feasibility, acceptability, cost, effectiveness and sustainability. This will include service user and provider interviews; service usage and cost auditing; and an administrative linked data study of parent and infant outcomes. ANALYSIS: Qualitative data will be analysed using reflexive thematic analysis. Quantitative and service usage outcomes will be described as counts and proportions. Evaluation of health outcomes will use interrupted time series analyses. Triangulation of data will be conducted and mapped to the Consolidated Framework for Implementation Research and Reach, Effectiveness, Adoption, Implementation and Maintenance frameworks to understand factors influencing feasibility, acceptability, effectiveness, cost and sustainability. ETHICS AND DISSEMINATION: Approval granted from St Vincent's Melbourne Ethics Committee (approval no. 239/22). Data will be disseminated according to the strategy outlined in the codesign study protocol, in-line with the National Health and Medical Research Council Aboriginal and Torres Strait Islander Research Excellence criteria.
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Servicios de Salud del Indígena , Trauma Psicológico , Femenino , Humanos , Aborigenas Australianos e Isleños del Estrecho de Torres , Servicios de Salud del Indígena/organización & administración , Evaluación de Programas y Proyectos de Salud , Victoria , Trauma Psicológico/etnología , Trauma Psicológico/terapiaRESUMEN
Cell signaling is central to neuronal activity and its dysregulation may lead to neurodegeneration and cognitive decline. Here, we show that selective genetic potentiation of neuronal ERK signaling prevents cell death in vitro and in vivo in the mouse brain, while attenuation of ERK signaling does the opposite. This neuroprotective effect mediated by an enhanced nuclear ERK activity can also be induced by the novel cell penetrating peptide RB5. In vitro administration of RB5 disrupts the preferential interaction of ERK1 MAP kinase with importinα1/KPNA2 over ERK2, facilitates ERK1/2 nuclear translocation, and enhances global ERK activity. Importantly, RB5 treatment in vivo promotes neuroprotection in mouse models of Huntington's (HD), Alzheimer's (AD), and Parkinson's (PD) disease, and enhances ERK signaling in a human cellular model of HD. Additionally, RB5-mediated potentiation of ERK nuclear signaling facilitates synaptic plasticity, enhances cognition in healthy rodents, and rescues cognitive impairments in AD and HD models. The reported molecular mechanism shared across multiple neurodegenerative disorders reveals a potential new therapeutic target approach based on the modulation of KPNA2-ERK1/2 interactions.
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Sistema de Señalización de MAP Quinasas , Neuroprotección , Animales , Humanos , Ratones , alfa Carioferinas/farmacología , Cognición , Fosforilación , Transducción de SeñalRESUMEN
Immunosuppression resulting in impaired Epstein-Barr virus (EBV)-specific T-cell immunity is involved in the pathogenesis of EBV-positive post-transplantation lymphoproliferative disorder (EBV(+) PTLD). Restoration of EBV-specific T-cell immunity by adoptive immunotherapy can induce remission. EBV-nuclear antigen-1 (EBNA1) is unique in being expressed in all cases of EBV(+) PTLD. Recent data demonstrate that EBNA1 is not immunologically silent and can be exploited as a T-cell target. There are no data on EBNA1-specific T cells in PTLD. EBNA1-specific T cells capable of proliferation, interferon-γ release, and CD107a/b degranulation were assayed in 14 EBV(+) PTLD diagnostic blood samples and 19 healthy controls. EBNA1-specific CD4(+) T cells predominated and were expanded in 10 of 14 patients and 19 of 19 controls. Although human leukocyte antigen class I alleles influenced the magnitude of the response, EBNA1-specific CD8(+) effector T cells were successfully generated in 9 of 14 EBV(+) PTLD patients and 16 of 19 controls. The majority of PTLD patients had a polymorphism in an EBNA1 epitope, and T-cell recognition was greatly enhanced when EBNA1 peptides derived from the polymorphic epitope were used. These results indicate that EBNA1-specific T cells should be included in adoptive immunotherapy for PTLD. Furthermore, expansion protocols should use antigenic sequences from relevant EBV strains.
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Antígenos Nucleares del Virus de Epstein-Barr/inmunología , Herpesvirus Humano 4/inmunología , Inmunoterapia Adoptiva/métodos , Trastornos Linfoproliferativos/etiología , Trastornos Linfoproliferativos/terapia , Linfocitos T/inmunología , Linfocitos T/virología , Trasplantes/efectos adversos , Adulto , Alelos , Secuencia de Bases , Linfocitos T CD4-Positivos/inmunología , Linfocitos T CD4-Positivos/virología , Linfocitos T CD8-positivos/inmunología , Linfocitos T CD8-positivos/virología , Estudios de Casos y Controles , Niño , Cartilla de ADN/genética , Epítopos/genética , Antígenos Nucleares del Virus de Epstein-Barr/genética , Femenino , Antígeno HLA-B35/genética , Herpesvirus Humano 4/genética , Humanos , Recién Nacido , Interferón gamma/biosíntesis , Trastornos Linfoproliferativos/inmunología , Trastornos Linfoproliferativos/virología , Proteína 1 de la Membrana Asociada a los Lisosomas/biosíntesis , Proteína 2 de la Membrana Asociada a los Lisosomas/biosíntesis , Masculino , Persona de Mediana Edad , Polimorfismo Genético , Adulto JovenRESUMEN
Recently, nontumor specific circulating DNA was shown to be elevated in a broad range of lymphomas, implicating a role as a potential biomarker. Epstein-Barr virus' (EBV) presence within a proportion of lymphomas implies EBV-DNA has potential as a lymphoma-specific disease response biomarker. However, application would be restricted to EBV-associated lymphomas. Neither detailed comparison has been performed of lymphoma-specific versus nonspecific DNA as disease response biomarkers nor have the kinetics of circulating DNA during treatment been established, and the optimal methodology remains unknown. We prospectively evaluated DNA levels and clinical response of 63 lymphoma patients. DNA was measured in paired serum, plasma, and cell samples at five predetermined time-points taken prior, during and following treatment. Both cell-free (c-f) circulating EBV-DNA (in EBV-associated lymphoma) and nonspecific c-f DNA levels (in all lymphomas) were elevated and discriminatory at presentation compared to healthy controls. Nonspecific c-f DNA was significantly associated with baseline serum lactate dehydrogenase. Within EBV-associated lymphomas at presentation, there was a strong correlation between specific and nonspecific circulating c-f DNA (r = 0.9, P < 0.0001). However, only c-f EBV-DNA correlated with clinical/radiological response. In addition, c-f EBV-DNA, and not nonspecific c-f DNA, provided an early marker of relapsed and refractory disease. Serum versus plasma, and single versus multiple-copy EBV-gene targets were equivalent. Lymphoma-specific DNA is a disease response biomarker; however, nonspecific DNA reflected neither lymphoma-specific DNA nor therapeutic response. Lymphoma disease response can be monitored by blood tests, but new lymphoma-specific biomarkers need to be identified to broaden applicability.
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Biomarcadores de Tumor/sangre , ADN de Neoplasias/sangre , ADN Viral/sangre , Infecciones por Virus de Epstein-Barr/sangre , Herpesvirus Humano 4/genética , Linfoma/sangre , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Femenino , Humanos , Leucocitos Mononucleares/química , Linfoma/clasificación , Linfoma/tratamiento farmacológico , Linfoma/virología , Masculino , Persona de Mediana Edad , Plasma , Sensibilidad y Especificidad , Suero , Resultado del Tratamiento , Carga Viral , Viremia/sangre , Adulto JovenRESUMEN
This Aboriginal-led study explores Aboriginal and Torres Strait Islander parents' experiences of COVID-19. 110 Aboriginal and Torres Strait Islander parents were interviewed between October 2020 and March 2022. Participants were recruited through community networks and partner health services in South Australia, Victoria, and Northern Territory, Australia. Participants were predominantly female (89%) and based in Victoria (47%) or South Australia (45%). Inductive thematic analysis identified three themes: (1) Changes to daily living; (2) Impact on social and emotional wellbeing; and (3) Disconnection from family, community, and culture. COVID-19 impacted Aboriginal and Torres Strait Islander families. Disruption to cultural practice, and disconnection from country, family, and community was detrimental to wellbeing. These impacts aggravated pre-existing inequalities and may continue to have greater impact on Aboriginal and Torres Strait Islander parents and communities due to intergenerational trauma, stemming from colonisation, violence and dispossession and ongoing systemic racism. We advocate for the development of a framework that ensures an equitable approach to future public health responses for Aboriginal and Torres Strait Islander people.
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COVID-19 , Servicios de Salud del Indígena , Humanos , Femenino , Masculino , Pandemias , Aborigenas Australianos e Isleños del Estrecho de Torres , Nativos de Hawái y Otras Islas del Pacífico/psicología , COVID-19/epidemiología , VictoriaRESUMEN
The Coronavirus Disease 2019 (COVID-19) pandemic impacted peoples' livelihoods and mental wellbeing. Aboriginal and Torres Strait Islander peoples in Australia continue to experience intergenerational trauma associated with colonization and may experience trauma-related distress in response to government responses to public health emergencies. We aimed to develop a culturally responsive trauma-informed public health emergency response framework for Aboriginal and Torres Strait Islander peoples. This Aboriginal and Torres Strait Islander-led study involved: (i) a review of trauma-informed public health emergency responses to develop a draft framework (ii) interviews with 110 Aboriginal and Torres Strait Islander parents about how COVID-19 impacted their lives, and (iii) a workshop with 36 stakeholders about pandemic experiences using framework analysis to refine a culturally responsive trauma-informed framework. The framework included: an overarching philosophy (cultural humility, safety and responsiveness); key enablers (local leadership and Eldership); supporting strategies (provision of basic needs and resources, well-functioning social systems, human rights, dignity, choice, justice and ethics, mutuality and collective responsibility, and strengthening of existing systems); interdependent core concepts (safety, transparency, and empowerment, holistic support, connectedness and collaboration, and compassion, protection and caring); and central goals (a sense of security, resilience, wellbeing, self- and collective-efficacy, hope, trust, resilience, and healing from grief and loss).
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COVID-19 , Servicios de Salud del Indígena , Humanos , Nativos de Hawái y Otras Islas del Pacífico , Salud Pública , COVID-19/epidemiología , Pueblos Indígenas , Australia/epidemiologíaRESUMEN
LIM domain kinases 1 and 2 (LIMK1 and LIMK2) regulate actin dynamics and subsequently key cellular functions such as proliferation and migration. LIMK1 and LIMK2 phosphorylate and inactivate cofilin leading to increased actin polymerization. As a result, LIMK inhibitors are emerging as a promising treatment strategy for certain cancers and neurological disorders. High-quality chemical probes are required if the role of these kinases in health and disease is to be understood. To that end, we report the results of a comparative assessment of 17 reported LIMK1/2 inhibitors in a variety of in vitro enzymatic and cellular assays. Our evaluation has identified three compounds (TH-257, LIJTF500025, and LIMKi3) as potent and selective inhibitors suitable for use as in vitro and in vivo pharmacological tools for the study of LIMK function in cell biology.
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Actinas , Quinasas Lim , Factores Despolimerizantes de la Actina/metabolismo , Quinasas Lim/química , Quinasas Lim/metabolismo , FosforilaciónRESUMEN
Purpose: Adolescent and young adult (AYA) cancer survivors may be at risk of developing symptoms of social anxiety disorder (SAD) due to disruptions in social participation and functioning following a cancer diagnosis. This study aimed to explore (1) the proportion of Australian AYA-aged survivors of childhood and adolescent cancer who experience symptoms of SAD, (2) how symptoms of SAD are described by survivors as affecting their daily social functioning. Methods: A mixed-methods cross-sectional design was employed, inviting survivors, aged 13-25 years, who had completed treatment between one and ten years ago. Survivors completed a paper-based questionnaire, containing validated measures of SAD, and an optional semistructured interview assessing current social functioning and social anxiety. Results: Twenty-seven survivors aged 13-25 years participated (M = 19.15, 51.9% male, and 7 years post-treatment). Nine (33%) participants reported clinically significant symptoms of SAD. In interviews, survivors reported worries about how others perceived them and fears around meeting new people. Survivors described that this impacted their daily social functioning, leading them to avoid, or endure with distress, feared social situations. Conclusion: This study shows that clinically significant social anxiety may be a concern for a subset of survivors of childhood/adolescent cancer. Identifying which young people are at risk of SAD after cancer and how best to support this vulnerable cohort is critical.
Asunto(s)
Neoplasias , Sobrevivientes , Adolescente , Ansiedad/etiología , Australia/epidemiología , Estudios Transversales , Miedo , Femenino , Humanos , Masculino , Neoplasias/complicaciones , Neoplasias/terapia , Adulto JovenRESUMEN
OBJECTIVE: Clinical practice guidelines recommend that physicians provide asthma education to patients and their families. To characterize parents' and children's perception of physician practice, we examined: (i) proportion of parents and children reporting physician discussion of asthma education topics; (ii) age-group differences in children's report; (iii) site differences in children's and parents' report; (iv) sociodemographic and disease characteristics associated with children's report; and (v) the relation between children's report and adherence to daily controller medications. METHODS: We conducted a cross-sectional study of 125 children with asthma (mean age = 11.3 years; 62% were male) and their parents. Parents provided demographic and disease data. Children reported whether physicians had ever discussed each of 16 asthma education topics with them. We used logistic regression to examine age-group and site differences in children's report of physician discussion of each topic. Multivariate linear regression was used to determine associations between demographic (e.g., child age, race) and disease (e.g., symptom severity) variables and topics discussed. RESULTS: On average, 34.7% of children reported physician discussion of a topic; 8-10-year-olds reported significantly fewer topics discussed than children aged 11 and older (p < .05). Whereas parents' report differed by practice setting, children's report did not. In multivariate analyses, child age (ß = 0.46 (SE: 0.17); p < .01), persistent symptoms (ß = 1.59 (SE: 0.80); p < .05), and number of outpatient asthma visits (ß = 0.19 (SE: 0.08); p < .05) remained significantly associated with number of topics discussed. CONCLUSION: These results suggest that the majority of children either may not receive, or may not recall receiving, information from their physicians about the fundamentals of asthma management. Physicians have an invaluable teaching opportunity in the medical office visit and should consider capitalizing on this opportunity to build children's sense of self-efficacy and competence in their self-care.