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1.
J Hered ; 2024 Sep 09.
Artigo em Inglês | MEDLINE | ID: mdl-39248324

RESUMO

Polyergus kidnapper ants are widely distributed, but relatively uncommon, throughout the Holarctic, spanning an elevational range from sea level to over 3000 m. These species are well known for their obligate social parasitism with various Formica ant species, which they kidnap in dramatic, highly coordinated raids. Kidnapped Formica larvae and pupae become integrated into the Polyergus colony where they develop into adults and perform nearly all of the necessary colony tasks for the benefit of their captors. In California, Polyergus mexicanus is the most widely distributed Polyergus, but recent evidence has identified substantial genetic polymorphism within this species, including genetically divergent lineages associated with the use of different Formica host species. Given its unique behavior and genetic diversity, Polyergus mexicanus plays a critical role in maintaining ecosystem balance by influencing the population dynamics and genetic diversity of its host ant species, Formica, highlighting its conservation value and importance in the context of biodiversity preservation. Here, we present a high-quality genome assembly of P. mexicanus from a sample collected in Plumas County, CA, USA, in the foothills of the central Sierra Nevada. This genome assembly consists of 364 scaffolds spanning 252.31 Mb, with contig N50 of 481,250 kb, scaffold N50 of 10.36 Mb, and BUSCO completeness of 95.4%. We also assembled the genome of the Wolbachia endosymbiont of P. mexicanus - a single, circular contig spanning 1.23 Mb. These genome sequences provide essential resources for future studies of conservation genetics, population genetics, speciation, and behavioral ecology in this charismatic social insect.

3.
Australas Psychiatry ; : 10398562241269171, 2024 Aug 13.
Artigo em Inglês | MEDLINE | ID: mdl-39137045

RESUMO

OBJECTIVE: To examine the accuracy and likely clinical usefulness of the Psychosis Metabolic Risk Calculator (PsyMetRiC) in predicting up-to six-year risk of incident metabolic syndrome in an Australian sample of young people with first-episode psychosis. METHOD: We conducted a retrospective study at a secondary care early psychosis treatment service among people aged 16-35 years, extracting relevant data at the time of antipsychotic commencement and between one-to-six-years later. We assessed algorithm accuracy primarily via discrimination (C-statistic), calibration (calibration plots) and clinical usefulness (decision curve analysis). Model updating and recalibration generated a site-specific (Australian) PsyMetRiC version. RESULTS: We included 116 people with baseline and follow-up data: 73% male, mean age 20.1 years, mean follow-up 2.6 years, metabolic syndrome prevalence 13%. C-statistics for both partial- (C = 0.71, 95% CI 0.64-0.75) and full-models (C = 0.72, 95% CI 0.65-0.77) were acceptable; however, calibration plots demonstrated consistent under-prediction of risk. Recalibration and updating led to slightly improved C-statistics, greatly improved agreement between observed and predicted risk, and a narrow window of likely clinical usefulness improved significantly. CONCLUSION: An updated and recalibrated PsyMetRiC model, PsyMetRiC-Australia, shows promise. Validation in a large sample is required to confirm its accuracy and clinical usefulness for the Australian population.

4.
Evolution ; 2024 Jul 09.
Artigo em Inglês | MEDLINE | ID: mdl-38981009

RESUMO

Island biotas provide unparalleled opportunities to examine evolutionary processes. Founder effects and bottlenecks, for example, typically decrease genetic diversity in island populations, while selection for reduced dispersal can increase population structure. Given that support for these generalities mostly comes from single-species analyses, assemblage-level comparisons are needed to clarify how (i) colonization affects the gene pools of interacting insular organisms, and (ii) patterns of genetic differentiation vary within assemblages of organisms. Here, we use genome-wide sequence data from ultraconserved elements (UCEs) to compare genetic diversity and population structure of mainland and island populations of nine ant species in coastal southern California. As expected, island populations (from Santa Cruz Island) had lower expected heterozygosity and Watterson's theta compared to mainland populations (from the Lompoc Valley). Island populations, however, exhibited smaller genetic distances among samples, indicating less population subdivision. Within the focal assemblage, pairwise Fst values revealed pronounced interspecific variation in mainland-island differentiation, which increases with gyne body size. Our results reveal population differences across an assemblage of interacting species, and illuminate general patterns of insularization in ants. Compared to single-species studies, our analysis of nine conspecific population pairs from the same island-mainland system offers a powerful approach to studying fundamental evolutionary processes.

5.
Clin Cancer Res ; 30(8): 1595-1606, 2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-38593226

RESUMO

PURPOSE: CD137 is a T- and NK-cell costimulatory receptor involved in consolidating immunologic responses. The potent CD137 agonist urelumab has shown clinical promise as a cancer immunotherapeutic but development has been hampered by on-target off-tumor toxicities. A CD137 agonist targeted to the prostate-specific membrane antigen (PSMA), frequently and highly expressed on castration-resistant metastatic prostate cancer (mCRPC) tumor cells, could bring effective immunotherapy to this immunologically challenging to address disease. EXPERIMENTAL DESIGN: We designed and manufactured CB307, a novel half-life extended bispecific costimulatory Humabody VH therapeutic to elicit CD137 agonism exclusively in a PSMA-high tumor microenvironment (TME). The functional activity of CB307 was assessed in cell-based assays and in syngeneic mouse antitumor pharmacology studies. Nonclinical toxicology and toxicokinetic properties of CB307 were assessed in a good laboratory practice (GLP) compliant study in cynomolgus macaques. RESULTS: CB307 provides effective CD137 agonism in a PSMA-dependent manner, with antitumor activity both in vitro and in vivo, and additional activity when combined with checkpoint inhibitors. A validated novel PSMA/CD137 IHC assay demonstrated a higher prevalence of CD137-positive cells in the PSMA-expressing human mCRPC TME with respect to primary lesions. CB307 did not show substantial toxicity in nonhuman primates and exhibited a plasma half-life supporting weekly clinical administration. CONCLUSIONS: CB307 is a first-in-class immunotherapeutic that triggers potent PSMA-dependent T-cell activation, thereby alleviating toxicologic concerns against unrestricted CD137 agonism.


Assuntos
Neoplasias de Próstata Resistentes à Castração , Masculino , Humanos , Camundongos , Animais , Neoplasias de Próstata Resistentes à Castração/tratamento farmacológico , Neoplasias de Próstata Resistentes à Castração/patologia , Imunoterapia/métodos , Microambiente Tumoral
6.
PLoS One ; 19(4): e0301583, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38669303

RESUMO

People with mental illness tend to present low levels of physical activity and high levels of sedentary behavior. The study aims to compare these levels in mental illness patients, exploring the role of socioeconomic development and treatment setting. This cross-sectional study used accelerometers and the Simple Physical Activity Questionnaire (SIMPAQ) to assess physical activity and sedentary behavior in mental illness individuals living in 23 countries. Two-way ANOVAs were used to evaluate the interaction between socioeconomic development and the treatment settings on physical activity and sedentary behavior. A total of 884 (men = 55.3%) participants, mean age of 39.3 (SD = 12.8), were evaluated. A significant interaction between socioeconomic development and treatment settings was found in sedentary behavior (F = 5.525; p = 0.019; η2p = 0.009; small effect size). Main effects were observed on socioeconomic development (F = 43.004; p < 0.001; η2p = 0.066; medium effect size) and treatment setting (F = 23.001; p < 0.001; η2p = 0.036; small effect size) for sedentary behavior and physical activity: socioeconomic development (F = 20.888; p < 0.001; η2p = 0.033; small effect size) and treatment setting (F = 30.358; p < 0.001; η2p = 0.047; small effect size), showing that HIC patients were more active, while MIC patients were more sedentary. Moreover, despite of inpatients had presented higher levels of physical activity than outpatients, they also spent more time sitting. Socioeconomic development plays an important role in sedentary behavior in patients with mental disorders, warning the need to develop new strategies to reduce these levels in this population.


Assuntos
Exercício Físico , Transtornos Mentais , Comportamento Sedentário , Humanos , Masculino , Feminino , Estudos Transversais , Adulto , Transtornos Mentais/epidemiologia , Pessoa de Meia-Idade , Inquéritos e Questionários , Fatores Socioeconômicos , Acelerometria
7.
Artigo em Inglês | MEDLINE | ID: mdl-38551076

RESUMO

WHAT IS KNOWN ON THE SUBJECT: Smoking rates have decreased in the general population but remain high among people with severe mental illness (SMI). WHAT THE PAPER ADDS TO EXISTING KNOWLEDGE: An individualized smoking cessation program was tested with 99 adults with SMI. The program showed it is possible to help people with SMI smoke fewer cigarettes and reduce nicotine addiction. Customized smoking cessation programs are essential for those with high nicotine dependence and mental health challenges. IMPLICATIONS FOR PRACTICE: Mental health services should offer tailored tobacco cessation programs because these programs can improve the health of people with mental illness who smoke. It is important for mental health services to follow government guidelines and provide evidence-based support. ABSTRACT: INTRODUCTION: Despite significant reductions in smoking rates in the general population over recent decades, smoking rates remain relatively unchanged among people with SMI. AIM: To evaluate the feasibility and preliminary effectiveness of the Keep Quitting in Mind pilot program, an individualized smoking cessation program for people experiencing SMI. METHODS: In total, 99 adult participants with SMI and engaged with a community mental health service, participated in the intervention. The intervention included motivational interviewing and goal setting, in addition to provision of pharmaceutical aids (including nicotine replacement therapy). RESULTS: Analysis determined that the Keep Quitting in Mind pilot program was feasible in a public adult mental health service and participation in the program was associated with reductions in the number of cigarettes smoked daily and level of nicotine addiction. DISCUSSION: This real-world pilot program demonstrated feasibility and potential effectiveness in reducing smoking among adults with mental illness. Aligning with government guidelines, tailored smoking cessation programs are crucial due to high nicotine dependence and mental health complexities. IMPLICATIONS FOR PRACTICE: Given the high rates of cigarette smoking by people with mental illness and the cardiometabolic health risks associated with this, mental health services should consider adding evidence-based and bespoke tobacco cessation programs as part of core business.

8.
Artigo em Inglês | MEDLINE | ID: mdl-38334187

RESUMO

OBJECTIVES: In 2013, a cluster-controlled pilot study found the 12-week Keeping the Body in Mind (KBIM) lifestyle and life skills intervention was able to prevent weight gain in a small sample of youth experiencing first-episode psychosis (FEP) with fewer than 4 weeks of antipsychotic exposure. This study aims to evaluate the effectiveness of KBIM as routine care on anthropometry and metabolic biochemistry in a larger sample of youth with FEP across three community mental health services. METHOD: This retrospective chart audit was conducted on youth with FEP, prescribed a therapeutic dose of antipsychotic medication, and who engaged with KBIM between 2015 and 2019. Primary outcomes were weight and waist circumference. Secondary outcomes were blood pressure, blood glucose, and blood lipids. Outcomes were collected in at baseline and at 12 weeks. Data on program engagement were obtained from the participant's medical file. RESULTS: One-hundred and eighty-two people met inclusion criteria, and up to 134 people had baseline and 12-week data on one or more outcome. Mean number of sessions attended was 11.1 (SD = 7.3). Increases in weight and waist circumference were limited to 1.5 kg (SD = 5.3, t(133) = 3.2, p = .002) and 0.7 cm (SD = 5.8, t(109) = 1.2, p = .23) respectively. Eighty-one percent of participants did not experience clinically significant weight gain (>7% of baseline weight). There were no significant changes in blood pressure or metabolic biochemistry. CONCLUSION: The prevention of substantial gains in weight and waist circumference observed in the initial pilot study was maintained with implementation of KBIM as part of routine clinical care for youth with FEP.

9.
J Hered ; 115(1): 120-129, 2024 Feb 03.
Artigo em Inglês | MEDLINE | ID: mdl-37751380

RESUMO

Carpenter ants in the genus Camponotus are large, conspicuous ants that are abundant and ecologically influential in many terrestrial ecosystems. The bicolored carpenter ant, Camponotus vicinus Mayr, is distributed across a wide range of elevations and latitudes in western North America, where it is a prominent scavenger and predator. Here, we present a high-quality genome assembly of C. vicinus from a sample collected in Sonoma County, California, near the type locality of the species. This genome assembly consists of 38 scaffolds spanning 302.74 Mb, with contig N50 of 15.9 Mb, scaffold N50 of 19.9 Mb, and BUSCO completeness of 99.2%. This genome sequence will be a valuable resource for exploring the evolutionary ecology of C. vicinus and carpenter ants generally. It also provides an important tool for clarifying cryptic diversity within the C. vicinus species complex, a genetically diverse set of populations, some of which are quite localized and of conservation interest.


Assuntos
Formigas , Ecossistema , Animais , Simbiose , Formigas/genética , Filogenia
10.
Sci Total Environ ; 912: 169120, 2024 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-38070558

RESUMO

Multi-hazard events, characterized by the simultaneous, cascading, or cumulative occurrence of multiple natural hazards, pose a significant threat to human lives and assets. This is primarily due to the cumulative and cascading effects arising from the interplay of various natural hazards across space and time. However, their identification is challenging, which is attributable to the complex nature of natural hazard interactions and the limited availability of multi-hazard observations. This study presents an approach for identifying multi-hazard events during the past 123 years (1900-2023) using the EM-DAT global disaster database. Leveraging the 'associated hazard' information in EM-DAT, multi-hazard events are detected and assessed in relation to their frequency, impact on human lives and assets, and reporting trends. The interactions between various combinations of natural hazard pairs are explored, reclassifying them into four categories: preconditioned/triggering, multivariate, temporally compounding, and spatially compounding multi-hazard events. The results show, globally, approximately 19 % of the 16,535 disasters recorded in EM-DAT can be classified as multi-hazard events. However, the multi-hazard events recorded in EM-DAT are disproportionately responsible for nearly 59 % of the estimated global economic losses. Conversely, single hazard events resulted in higher fatalities compared to multi-hazard events. The largest proportion of multi-hazard events are associated with floods, storms, and earthquakes. Landslides emerge as the predominant secondary hazards within multi-hazard pairs, primarily triggered by floods, storms, and earthquakes, with the majority of multi-hazard events exhibiting preconditioned/triggering and multivariate characteristics. There is a higher prevalence of multi-hazard events in Asia and North America, whilst temporal overlaps of multiple hazards predominate in Europe. These results can be used to increase the integration of multi-hazard thinking in risk assessments, emergency management response plans and mitigation policies at both national and international levels.

11.
BMJ Open ; 13(10): e073893, 2023 10 27.
Artigo em Inglês | MEDLINE | ID: mdl-37890972

RESUMO

INTRODUCTION: Children and adolescents are increasingly prescribed antipsychotic medications off-label in the treatment of behavioural disorders. While antipsychotic medications are effective in managing behavioural issues, they carry a significant risk of adverse events that compromise ongoing physical health. Of particular concern is the negative impact antipsychotic medications have on cardiometabolic health. Interventions that aim to modify lifestyle habits have the potential to alleviate the adverse effects of antipsychotic medication by enhancing weight management, increasing physical activity, promoting better nutritional practices, improving dietary habits and promoting healthier sleep patterns and sleep hygiene. However, a comprehensive review has not been performed to ascertain the effectiveness of lifestyle interventions for children and adolescents who are at increased risk of antipsychotic-induced compromises to their physical health. METHODS AND ANALYSIS: This systematic review will follow the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines. Four databases will be searched without any year constraints to identify randomised controlled trials that are published in the English language and report a lifestyle intervention compared with usual care with any physical health outcome measure. Trial registers and results repositories will be scoured to identify additional studies. Two reviewers will independently conduct screening, data extraction and quality assessment and compare the results. Quantitative data will be synthesised, where appropriate, through a random-effects meta-analysis model. Otherwise, data will be reported in a qualitative (narrative) synthesis. Heterogeneity will be quantified using the I2 statistic. The Cochrane Risk of Bias 2 tool will be used for risk of bias assessment. The Grading of Recommendations, Assessment, Development and Evaluation system will be used to evaluate the cumulative body of evidence. ETHICS AND DISSEMINATION: Ethics approval is not required. The publication plan will target high-impact, peer-reviewed journals that fall under the scope of Psychiatry and Mental Health. PROSPERO REGISTRATION NUMBER: CRD42022380277.


Assuntos
Antipsicóticos , Humanos , Adolescente , Criança , Antipsicóticos/efeitos adversos , Revisões Sistemáticas como Assunto , Metanálise como Assunto , Estilo de Vida , Exercício Físico , Literatura de Revisão como Assunto
12.
Sci Rep ; 13(1): 13808, 2023 Aug 23.
Artigo em Inglês | MEDLINE | ID: mdl-37612351

RESUMO

This study presents a new method, the MYRIAD-Hazard Event Sets Algorithm (MYRIAD-HESA), that compiles historically-based multi-hazard event sets. MYRIAD-HESA is a fully open-access method that can create multi-hazard event sets from any hazard events that occur on varying time, space, and intensity scales. In the past, multi-hazards have predominately been studied on a local or continental scale, or have been limited to specific hazard combinations, such as the combination between droughts and heatwaves. Therefore, we exemplify our approach by compiling a global multi-hazard event set database, spanning from 2004 to 2017, which includes eleven hazards from varying hazard classes (e.g. meteorological, geophysical, hydrological and climatological). This global database provides new scientific insights on the frequency of different multi-hazard events and their hotspots. Additionally, we explicitly incorporate a temporal dimension in MYRIAD-HESA, the time-lag. The time-lag, or time between the occurrence of hazards, is used to determine potentially impactful events that occurred in close succession. Varying time-lags have been tested in MYRIAD-HESA, and are analysed using North America as a case study. Alongside the MYRIAD-HESA, the multi-hazard event sets, MYRIAD-HES, is openly available to further increase the understanding of multi-hazard events in the disaster risk community. The open-source nature of MYRIAD-HESA provides flexibility to conduct multi-risk assessments by, for example, incorporating higher resolution data for an area of interest.

13.
Exp Dermatol ; 32(9): 1538-1545, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37377276

RESUMO

Interleukin (IL)-17A underlies the pathogenesis of chronic plaque psoriasis (CPP). Well-tolerated, effective IL-17A inhibitors for mild-to-moderate CPP are needed. ZL-1102 is a novel antibody fragment targeting IL-17A. To assess the safety, tolerability, preliminary efficacy and skin penetration of a topical 1% ZL-1102 hydrogel in patients with mild-to-moderate CPP, a two-part, Phase Ib study was conducted. Open-label Part A: six patients received a single topical application of ZL-1102 onto a psoriatic plaque; double-blind Part B: 53 patients were randomised 1:1 to twice-daily ZL-1102 or vehicle for 4 weeks. Key primary endpoints included treatment-emergent adverse events (TEAEs), tolerability and changes in local psoriasis area and severity index (PASI). TEAEs occurred in two (33.3%) patients in Part A and in 16 (59.3%) and 13 (50.0%) patients in the ZL-1102 and vehicle arms, respectively, in Part B. No grade ≥3 TEAEs were seen with ZL-1102. ZL-1102 led to numerically greater changes in local PASI versus vehicle (-28.8% vs. -17.2%), with good local tolerability. The trend towards local PASI improvement was accompanied by biomarker changes based on RNA sequencing, indicative of ZL-1102 penetration into psoriatic plaques. Topical ZL-1102 showed good safety, local tolerability and a trend towards improved local PASI; skin penetration was observed without measurable systemic exposure. ACTRN12620000700932.


Assuntos
Anticorpos Monoclonais , Psoríase , Humanos , Anticorpos Monoclonais Humanizados , Interleucina-17 , Resultado do Tratamento , Método Duplo-Cego , Índice de Gravidade de Doença
14.
Mol Phylogenet Evol ; 186: 107825, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37244505

RESUMO

Studying the historical biogeography and life history transitions from eusocial colony life to social parasitism contributes to our understanding of the evolutionary mechanisms generating biodiversity in eusocial insects. The ants in the genus Myrmecia are a well-suited system for testing evolutionary hypotheses about how their species diversity was assembled through time because the genus is endemic to Australia with the single exception of the species M. apicalis inhabiting the Pacific Island of New Caledonia, and because at least one social parasite species exists in the genus. However, the evolutionary mechanisms underlying the disjunct biogeographic distribution of M. apicalis and the life history transition(s) to social parasitism remain unexplored. To study the biogeographic origin of the isolated, oceanic species M. apicalis and to reveal the origin and evolution of social parasitism in the genus, we reconstructed a comprehensive phylogeny of the ant subfamily Myrmeciinae. We utilized Ultra Conserved Elements (UCEs) as molecular markers to generate a molecular genetic dataset consisting of 2,287 loci per taxon on average for 66 out of the 93 known Myrmecia species as well as for the sister lineage Nothomyrmecia macrops and selected outgroups. Our time-calibrated phylogeny inferred that: (i) stem Myrmeciinae originated during the Paleocene âˆ¼ 58 Ma ago; (ii) the current disjunct biogeographic distribution of M. apicalis was driven by long-distance dispersal from Australia to New Caledonia during the Miocene âˆ¼ 14 Ma ago; (iii) the single social parasite species, M. inquilina, evolved directly from one of the two known host species, M. nigriceps, in sympatry via the intraspecific route of social parasite evolution; and (iv) 5 of the 9 previously established taxonomic species groups are non-monophyletic. We suggest minor changes to reconcile the molecular phylogenetic results with the taxonomic classification. Our study enhances our understanding of the evolution and biogeography of Australian bulldog ants, contributes to our knowledge about the evolution of social parasitism in ants, and provides a solid phylogenetic foundation for future inquiries into the biology, taxonomy, and classification of Myrmeciinae.


Assuntos
Formigas , Animais , Filogenia , Formigas/genética , Austrália , Simbiose , Nova Caledônia , Evolução Biológica , Teorema de Bayes
15.
Br J Nutr ; 130(12): 2025-2038, 2023 12 28.
Artigo em Inglês | MEDLINE | ID: mdl-37157830

RESUMO

People with severe mental illness (SMI), including schizophrenia and related psychoses and bipolar disorder, are at greater risk for obesity compared with people without mental illness. An altered resting metabolic rate (RMR) may be a key driving factor; however, published studies have not been systematically reviewed. This systematic review and meta-analysis aimed to determine whether the RMR of people with SMI assessed by indirect calorimetry differs from (i) controls, (ii) predictive equations and (iii) after administration of antipsychotic medications. Five databases were searched from database inception to March 2022. Thirteen studies providing nineteen relevant datasets were included. Study quality was mixed (62 % considered low quality). In the primary analysis, RMR in people with SMI did not differ from matched controls (n 2, standardised mean difference (SMD) = 0·58, 95 % CI -1·01, 2·16, P = 0·48, I2 = 92 %). Most predictive equations overestimated RMR. The Mifflin-St. Jeor equation appeared to be most accurate (n 5, SMD = -0·29, 95 % CI -0·73, 0·14, P = 0·19, I2 = 85 %). There were no significant changes in RMR after antipsychotic administration (n 4, SMD = 0·17, 95 % CI -0·21, 0·55, P = 0·38, I2 = 0 %). There is little evidence to suggest there is a difference in RMR between people with SMI and people without when matched for age, sex, BMI and body mass, or that commencement of antipsychotic medication alters RMR.


Assuntos
Antipsicóticos , Transtornos Mentais , Humanos , Metabolismo Basal , Índice de Massa Corporal , Antipsicóticos/uso terapêutico , Valor Preditivo dos Testes , Calorimetria Indireta
16.
iScience ; 26(5): 106736, 2023 May 19.
Artigo em Inglês | MEDLINE | ID: mdl-37216095

RESUMO

In our increasingly interconnected world, natural hazards and their impacts spread across geographical, administrative, and sectoral boundaries. Owing to the interrelationships between multi-hazards and socio-economic dimensions, the impacts of these types of events can surmount those of multiple single hazards. The complexities involved in tackling multi-hazards and multi-risks hinder a more holistic and integrative perspective and make it difficult to identify overarching dimensions important for assessment and management purposes. We contribute to this discussion by building on systemic risk research, especially the focus on interconnectedness, and suggest ways forward for an integrated multi-hazard and multi-risk framework that should be beneficial in real-world applications. In this article, we propose a six-step framework for analyzing and managing risk across a spectrum ranging from single-to multi- and systemic risk.

17.
Psychol Health ; : 1-23, 2023 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-37211776

RESUMO

OBJECTIVE: Poor mental health represents a large proportion of disease burden faced by young Australians, which has been further exacerbated by the Covid-19 pandemic and the reluctance of this population to seek support. Surf therapy is a novel form of intervention targeting mental health. The objective of this study was to interrogate programme theory within surf therapy, as delivered by the Waves of Wellness Foundation (WOW) in Australia. METHODS AND MEASURES: The study utilised grounded theory to understand or develop theoretical mediators for WOW surf therapy based on interviews exploring the experiences of previous intervention participants (n = 16; mean age = 18.4 years, SD = 2.8, range 14-24). Data were analysed through constant comparative analysis. RESULTS: Five categories emerged from participant data as foundational to WOW programme theory: (a) Safe Space, (b) Social Support, (c) Sensory Grounding, (d) Mastery and (e) Respite. These categories have novel theoretical and practical implications for both surf therapy and wider clinical practice, especially around concepts such as delivering 'mental health by stealth' and fostering longer term 'mental health maintenance' for participants. CONCLUSION: The study developed an initial WOW programme theory, highlighting the importance of foundational therapeutic structures beyond simply going surfing.

18.
Open Biol ; 13(3): 220373, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36944376

RESUMO

The enterobacterial common antigen (ECA) is a carbohydrate polymer that is associated with the cell envelope in the Enterobacteriaceae. ECA contains a repeating trisaccharide which is polymerized by WzyE, a member of the Wzy membrane protein polymerase superfamily. WzyE activity is regulated by a membrane protein polysaccharide co-polymerase, WzzE. Förster resonance energy transfer experiments demonstrate that WzyE and WzzE from Pectobacterium atrosepticum form a complex in vivo, and immunoblotting and cryo-electron microscopy (cryo-EM) analysis confirm a defined stoichiometry of approximately eight WzzE to one WzyE. Low-resolution cryo-EM reconstructions of the complex, aided by an antibody recognizing the C-terminus of WzyE, reveals WzyE sits in the central membrane lumen formed by the octameric arrangement of the transmembrane helices of WzzE. The pairing of Wzy and Wzz is found in polymerization systems for other bacterial polymers, including lipopolysaccharide O-antigens and capsular polysaccharides. The data provide new structural insight into a conserved mechanism for regulating polysaccharide chain length in bacteria.


Assuntos
Bactérias , Polissacarídeos , Microscopia Crioeletrônica , Bactérias/metabolismo , Oligossacarídeos , Proteínas de Membrana , Lipídeos , Antígenos O/química , Antígenos O/metabolismo
19.
iScience ; 26(3): 106030, 2023 Mar 17.
Artigo em Inglês | MEDLINE | ID: mdl-36843856

RESUMO

Consideration of compound drivers and impacts are often missing from applications within the Disaster Risk Reduction (DRR) cycle, leading to poorer understanding of risk and benefits of actions. The need to include compound considerations is known, but lack of guidance is prohibiting practitioners from including these considerations. This article makes a step toward practitioner guidance by providing examples where consideration of compound drivers, hazards, and impacts may affect different application domains within disaster risk management. We discern five DRR categories and provide illustrative examples of studies that highlight the role of "compound thinking" in early warning, emergency response, infrastructure management, long-term planning, and capacity building. We conclude with a number of common elements that may contribute to the development of practical guidelines to develop appropriate applications for risk management.

20.
Br J Sports Med ; 57(16): 1049-1057, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-36731907

RESUMO

OBJECTIVE: To estimate the efficacy of exercise on depressive symptoms compared with non-active control groups and to determine the moderating effects of exercise on depression and the presence of publication bias. DESIGN: Systematic review and meta-analysis with meta-regression. DATA SOURCES: The Cochrane Central Register of Controlled Trials, PubMed, MEDLINE, Embase, SPORTDiscus, PsycINFO, Scopus and Web of Science were searched without language restrictions from inception to 13 September2022 (PROSPERO registration no CRD42020210651). ELIGIBILITY CRITERIA FOR SELECTING STUDIES: Randomised controlled trials including participants aged 18 years or older with a diagnosis of major depressive disorder or those with depressive symptoms determined by validated screening measures scoring above the threshold value, investigating the effects of an exercise intervention (aerobic and/or resistance exercise) compared with a non-exercising control group. RESULTS: Forty-one studies, comprising 2264 participants post intervention were included in the meta-analysis demonstrating large effects (standardised mean difference (SMD)=-0.946, 95% CI -1.18 to -0.71) favouring exercise interventions which corresponds to the number needed to treat (NNT)=2 (95% CI 1.68 to 2.59). Large effects were found in studies with individuals with major depressive disorder (SMD=-0.998, 95% CI -1.39 to -0.61, k=20), supervised exercise interventions (SMD=-1.026, 95% CI -1.28 to -0.77, k=40) and moderate effects when analyses were restricted to low risk of bias studies (SMD=-0.666, 95% CI -0.99 to -0.34, k=12, NNT=2.8 (95% CI 1.94 to 5.22)). CONCLUSION: Exercise is efficacious in treating depression and depressive symptoms and should be offered as an evidence-based treatment option focusing on supervised and group exercise with moderate intensity and aerobic exercise regimes. The small sample sizes of many trials and high heterogeneity in methods should be considered when interpreting the results.


Assuntos
Depressão , Transtorno Depressivo Maior , Humanos , Depressão/terapia , Transtorno Depressivo Maior/terapia , Exercício Físico , Terapia por Exercício/métodos
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