ABSTRACT
Climate change is raising concerns about how forests will respond to extreme droughts, heat waves, and their co-occurrence. In this greenhouse study, we tested how carbon and water relations relate to seedling growth and mortality of northeastern US trees during and after extreme drought, warming, and combined drought and warming. We compared the response of our focal species red spruce (Picea rubens Sarg.) to a common associate (paper birch, Betula papyrifera Marsh.) and a species expected to increase abundance in this region with climate change (northern red oak, Quercus rubra L.). We tracked growth and mortality, photosynthesis, and water use of 216 seedlings of these species through a treatment and a recovery year. Each red spruce seedling was planted in containers either alone or with another seedling to simulate potential competition and seedlings were exposed to combinations of drought (irrigated, 15-day 'short', or 30-day 'long') and temperature (ambient or 16 days at +3.5 °C daily maximum) treatments. We found dominant effects of the drought reducing photosynthesis, midday water potential, and growth of spruce and birch, but that oak showed considerable resistance to drought stress. The effects of planting seedlings together were moderate and likely due to competition for limited water. Despite high temperatures reducing photosynthesis for all species, the warming imposed in this study minorly impacted growth only for oak in the recovery year. Overall, we found that the diverse water-use strategies employed by the species in our study related to their growth and recovery following drought stress. This study provides physiological evidence to support the prediction that native species to this region like red spruce and paper birch are susceptible to future climate extremes that may favor other species like northern red oak, leading to potential impacts on tree community dynamics under climate change.
ABSTRACT
Pediatric steroid-sensitive nephrotic syndrome (pSSNS) is the most common childhood glomerular disease. Previous genome-wide association studies (GWAS) identified a risk locus in the HLA Class II region and three additional independent risk loci. But the genetic architecture of pSSNS, and its genetically driven pathobiology, is largely unknown. Here, we conduct a multi-population GWAS meta-analysis in 38,463 participants (2440 cases). We then conduct conditional analyses and population specific GWAS. We discover twelve significant associations-eight from the multi-population meta-analysis (four novel), two from the multi-population conditional analysis (one novel), and two additional novel loci from the European meta-analysis. Fine-mapping implicates specific amino acid haplotypes in HLA-DQA1 and HLA-DQB1 driving the HLA Class II risk locus. Non-HLA loci colocalize with eQTLs of monocytes and numerous T-cell subsets in independent datasets. Colocalization with kidney eQTLs is lacking but overlap with kidney cell open chromatin suggests an uncharacterized disease mechanism in kidney cells. A polygenic risk score (PRS) associates with earlier disease onset. Altogether, these discoveries expand our knowledge of pSSNS genetic architecture across populations and provide cell-specific insights into its molecular drivers. Evaluating these associations in additional cohorts will refine our understanding of population specificity, heterogeneity, and clinical and molecular associations.
Subject(s)
Genome-Wide Association Study , Nephrotic Syndrome , Humans , Child , Nephrotic Syndrome/genetics , Genetic Predisposition to Disease , Haplotypes , Risk Factors , Polymorphism, Single NucleotideABSTRACT
Training nonspecialists in providing evidence-based psychological interventions (i.e. task-sharing) can effectively increase community access to psychological support. However, task-sharing interventions for this purpose are rarely used at scale. The aim of this study was to examine the factors influencing the potential for scaling up (i.e. scalability) of a task-sharing psychological intervention called Problem Management Plus (PM+) for Syrian refugees in Jordan. Semi-structured individual (n = 17) and group interviews (n = 20) were conducted with stakeholders knowledgeable about PM+ and the mental health system for Syrian refugees in Jordan. Using 'system innovation perspective', this study conceptualized the context as landscape developments, and systemic considerations were divided into culture (shared ways of thinking) and structure (ways of organizing). Political momentum was identified as a landscape trend likely facilitating scaling up, while predicted reductions in financial aid was regarded as a constraint. In terms of culture, the medicalized approach to mental health, stigma and gender were reported barriers for scaling up PM+. Using non-stigmatizing language and offering different modalities, childcare options and sessions outside of working hours were suggestions to reduce stigma, accommodate individual preferences and increase the demand for PM+. In relation to structure, the feasibility of scaling up PM+ largely depends on the ability to overcome legal barriers, limitations in human and financial resources and organizational challenges. We recommend sustainable funding to be made available for staff, training, supervision, infrastructure, coordination, expansion and evaluation of 'actual' scaling up of PM+. Future research may examine the local feasibility of various funding, training and supervision models. Lessons learned from actual scaling up of PM+ and similar task-sharing approaches need to be widely shared.
Subject(s)
Psychosocial Intervention , Refugees , Humans , Refugees/psychology , Jordan , Mental Health , Qualitative Research , SyriaABSTRACT
AIM: Death in the neonatal intensive care unit (NICU) commonly follows a decision to withdraw or limit life-sustaining treatment. Advances in medicine have changed the nature of life-sustaining interventions available and the potential prognosis for many newborn conditions. We aimed to assess changes in causes of death and end-of-life care over nearly four decades. METHODS: A retrospective review of infants dying in the NICU was performed (2017-2020) and compared with previous audits performed in the same centre (1985-1987 and 1999-2001). Diagnoses at death were recorded for each infant as well as their apparent prognosis and any withdrawal or limitations of medical treatment. RESULTS: In the recent epoch, there were 88 deaths out of 2084 admissions (4.2%), a reduction from the previous epochs (132/1362 (9.7%) and 111/1776 (6.2%), respectively, for epochs 1 and 2). More than 90% of infants died after withdrawal of life-sustaining treatment, an increase from the previous two epochs (75%). There was a reduction in deaths from chromosomal abnormalities, complications related to prematurity and severe birth asphyxia. CONCLUSIONS: There continue to be changes in both the diagnoses leading to death and approaches to withdrawal of treatment in the NICU. These may reflect ongoing changes in both prenatal and post-natal diagnostics as well as changing attitudes towards palliative care within the medical and wider community.
Subject(s)
Intensive Care Units, Neonatal , Terminal Care , Infant, Newborn , Infant , Female , Pregnancy , Humans , Infant, Premature , Palliative Care , Retrospective StudiesABSTRACT
Background: Syrian refugees have a high burden of mental health symptoms and face challenges in accessing mental health and psychosocial support (MHPSS). This study assesses health system responsiveness (HSR) to the MHPSS needs of Syrian refugees, comparing countries in Europe and the Middle East to inform recommendations for strengthening MHPSS systems. Methods: A mixed-methods rapid appraisal methodology guided by an adapted WHO Health System Framework was used to assess HSR in eight countries (Egypt, Germany, Jordan, Lebanon, Netherlands, Sweden, Switzerland, and Türkiye). Quantitative and qualitative analysis of primary and secondary data was used. Data collection and analysis were performed iteratively by multiple researchers. Country reports were used for comparative analysis and synthesis. Results: We found numerous constraints in HSR: i) Too few appropriate mental health providers and services; ii) Travel-related barriers impeding access to services, widening rural-urban inequalities in the distribution of mental health workers; iii) Cultural, language, and knowledge-related barriers to timely care likely caused by insufficient numbers of culturally sensitive providers, costs of professional interpreters, somatic presentations of distress by Syrian refugees, limited mental health awareness, and stigma associated to mental illness; iv) High out-of-pocket costs for psychological treatment and transportation to services reducing affordability, particularly in middle-income countries; v) Long waiting times for specialist mental health services; vi) Information gaps on the mental health needs of refugees and responsiveness of MHPSS systems in all countries. Six recommendations are provided to address these issues. Conclusions: All eight host countries struggle to provide responsive MHPSS to Syrian refugees. Strengthening the mental health workforce (in terms of quantity, quality, diversity, and distribution) is urgently needed to enable Syrian refugees to receive culturally appropriate and timely care and improve mental health outcomes. Increased financial investment in mental health and improved health information systems are crucial.
Background: People who experience war often have increased mental health problems. Those who are forced to flee abroad frequently struggle to access adequate mental health and psychosocial support services. As a result, many refugees often do not seek or use such services.Researchers of the Syrian REfuGees MeNTal HealTH Care Systems (STRENGTHS) consortium carried out rapid appraisals to assess the responsiveness of health systems to the mental health and psychosocial needs of Syrian refugees in eight countries: Egypt, Germany, Jordan, Lebanon, the Netherlands, Sweden, Switzerland, and Türkiye. They used quantitative and qualitative data, including primary and secondary data. This paper summarises and compares findings from the eight countries. What is health system responsiveness?: The ability of a health system to meet the expectations and needs of its people with regards to access, coverage, quality, and safety of services. What are our main findings and recommendations?: We found that all eight host countries struggle to provide responsive mental health and psychosocial support to Syrian refugees. We identified the following key challenges: Insufficient mental health providers and services, including uneven rural-urban distribution;Cultural, language, and knowledge-related barriers to timely care, caused by insufficient culturally sensitive providers and mental health stigma among Syrian refugee communities;Out-of-pocket costs for psychological treatment and transportation to services;Long waiting times for specialist mental health services;Information gaps on the mental health needs of Syrian refugees;We recommend increasing national funding for mental health to help Syrian refugees to receive more culturally appropriate and timely care. Increased funding can reduce out-of-pocket payments by refugees, improve national health information systems, and strengthen the mental health workforce (in terms of quantity, quality, diversity, and distribution). We also recommend investment in cultural competency and mental health training for community-based workers and primary care providers.