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Secreted signaling peptides are central regulators of growth, development, and stress responses, but specific steps in the evolution of these peptides and their receptors are not well understood. Also, the molecular mechanisms of peptide-receptor binding are only known for a few examples, primarily owing to the limited availability of protein structural determination capabilities to few laboratories worldwide. Plants have evolved a multitude of secreted signaling peptides and corresponding transmembrane receptors. Stress-responsive SERINE RICH ENDOGENOUS PEPTIDES (SCOOPs) were recently identified. Bioactive SCOOPs are proteolytically processed by subtilases and are perceived by the leucine-rich repeat receptor kinase MALE DISCOVERER 1-INTERACTING RECEPTOR-LIKE KINASE 2 (MIK2) in the model plant Arabidopsis thaliana. How SCOOPs and MIK2 have (co)evolved, and how SCOOPs bind to MIK2 are unknown. Using in silico analysis of 350 plant genomes and subsequent functional testing, we revealed the conservation of MIK2 as SCOOP receptor within the plant order Brassicales. We then leveraged AI-based structural modeling and comparative genomics to identify two conserved putative SCOOP-MIK2 binding pockets across Brassicales MIK2 homologues predicted to interact with the "SxS" motif of otherwise sequence-divergent SCOOPs. Mutagenesis of both predicted binding pockets compromised SCOOP binding to MIK2, SCOOP-induced complex formation between MIK2 and its coreceptor BRASSINOSTEROID INSENSITIVE 1-ASSOCIATED KINASE 1, and SCOOP-induced reactive oxygen species production, thus, confirming our in silico predictions. Collectively, in addition to revealing the elusive SCOOP-MIK2 binding mechanism, our analytic pipeline combining phylogenomics, AI-based structural predictions, and experimental biochemical and physiological validation provides a blueprint for the elucidation of peptide ligand-receptor perception mechanisms.
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Proteínas de Arabidopsis , Arabidopsis , Arabidopsis/metabolismo , Arabidopsis/genética , Proteínas de Arabidopsis/metabolismo , Proteínas de Arabidopsis/química , Proteínas de Arabidopsis/genética , Ligantes , Ligação Proteica , Proteínas Serina-Treonina Quinases/metabolismo , Proteínas Serina-Treonina Quinases/química , Proteínas Serina-Treonina Quinases/genética , Peptídeos/metabolismo , Peptídeos/química , Evolução Molecular , Modelos Moleculares , Transdução de Sinais , FosfotransferasesRESUMO
The phenotype of an organism results from its genotype and the influence of the environment throughout development. Even when using animals of the same genotype, independent studies may test animals of different phenotypes, resulting in poor replicability due to genotype-by-environment interactions. Thus, genetically defined strains of mice may respond differently to experimental treatments depending on their rearing environment. However, the extent of such phenotypic plasticity and its implications for the replicability of research findings have remained unknown. Here, we examined the extent to which common environmental differences between animal facilities modulate the phenotype of genetically homogeneous (inbred) mice. We conducted a comprehensive multicentre study, whereby inbred C57BL/6J mice from a single breeding cohort were allocated to and reared in 5 different animal facilities throughout early life and adolescence, before being transported to a single test laboratory. We found persistent effects of the rearing facility on the composition and heterogeneity of the gut microbial community. These effects were paralleled by persistent differences in body weight and in the behavioural phenotype of the mice. Furthermore, we show that environmental variation among animal facilities is strong enough to influence epigenetic patterns in neurons at the level of chromatin organisation. We detected changes in chromatin organisation in the regulatory regions of genes involved in nucleosome assembly, neuronal differentiation, synaptic plasticity, and regulation of behaviour. Our findings demonstrate that common environmental differences between animal facilities may produce facility-specific phenotypes, from the molecular to the behavioural level. Furthermore, they highlight an important limitation of inferences from single-laboratory studies and thus argue that study designs should take environmental background into account to increase the robustness and replicability of findings.
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Cromatina , Meio Ambiente , Camundongos , Animais , Camundongos Endogâmicos C57BL , Fenótipo , GenótipoRESUMO
Chromosomes have an intrinsic tendency to segregate into compartments, forming long-distance contacts between loci of similar chromatin states. How genome compartmentalization is regulated remains elusive. Here, comparison of mouse ground-state embryonic stem cells (ESCs) characterized by open and active chromatin, and advanced serum ESCs with a more closed and repressed genome, reveals distinct regulation of their genome organization due to differential dependency on BAZ2A/TIP5, a component of the chromatin remodeling complex NoRC. On ESC chromatin, BAZ2A interacts with SNF2H, DNA topoisomerase 2A (TOP2A) and cohesin. BAZ2A associates with chromatin sub-domains within the active A compartment, which intersect through long-range contacts. We found that ground-state chromatin selectively requires BAZ2A to limit the invasion of active domains into repressive compartments. BAZ2A depletion increases chromatin accessibility at B compartments. Furthermore, BAZ2A regulates H3K27me3 genome occupancy in a TOP2A-dependent manner. Finally, ground-state ESCs require BAZ2A for growth, differentiation, and correct expression of developmental genes. Our results uncover the propensity of open chromatin domains to invade repressive domains, which is counteracted by chromatin remodeling to establish genome partitioning and preserve cell identity.
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Proteínas Cromossômicas não Histona/genética , Proteínas Cromossômicas não Histona/metabolismo , Genoma , Células-Tronco Pluripotentes/metabolismo , Adenosina Trifosfatases/metabolismo , Animais , Proteínas de Ciclo Celular , Diferenciação Celular , Cromatina/metabolismo , Montagem e Desmontagem da Cromatina , DNA Topoisomerases Tipo II/metabolismo , Epigenômica , Regulação da Expressão Gênica , Histonas/metabolismo , Camundongos , Células-Tronco Embrionárias Murinas/citologia , Células-Tronco Pluripotentes/citologia , Proteínas de Ligação a Poli-ADP-Ribose/metabolismo , CoesinasRESUMO
Cyst-forming Apicomplexa (CFA) of the Sarcocystidae have a ubiquitous presence as pathogens of humans and farm animals transmitted through the food chain between hosts with few notable exceptions. The defining hallmark of this family of obligate intracellular protists consists of their ability to remain for very long periods as infectious tissue cysts in chronically infected intermediate hosts. Nevertheless, each closely related species has evolved unique strategies to maintain distinct reservoirs on global scales and ensuring efficient transmission to definitive hosts as well as between intermediate hosts. Here, we present an in-depth comparative mRNA expression analysis of the tachyzoite and bradyzoite stages of Besnoitia besnoiti strain Lisbon14 isolated from an infected farm animal based on its annotated genome sequence. The B. besnoiti genome is highly syntenic with that of other CFA and also retains the capacity to encode a large majority of known and inferred factors essential for completing a sexual cycle in a yet unknown definitive host. This work introduces Besnoitia besnoiti as a new model for comparative biology of coccidian tissue cysts which can be readily obtained in high purity. This model provides a framework for addressing fundamental questions about the evolution of tissue cysts and the biology of this pharmacologically intractable infectious parasite stage.
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Besnoitia , Estágios do Ciclo de Vida , Animais , Humanos , Estágios do Ciclo de Vida/genética , Cadeia Alimentar , Expressão GênicaRESUMO
Soil eukaryotes play a crucial role in maintaining ecosystem functions and services, yet the factors driving their diversity and distribution remain poorly understood. While many studies focus on some eukaryotic groups (mostly fungi), they are limited in their spatial scale. Here, we analyzed an unprecedented amount of observational data of soil eukaryomes at continental scale (787 sites across Europe) to gain further insights into the impact of a wide range of environmental conditions (climatic and edaphic) on their community composition and structure. We found that the diversity of fungi, protists, rotifers, tardigrades, nematodes, arthropods, and annelids was predominantly shaped by ecosystem type (annual and permanent croplands, managed and unmanaged grasslands, coniferous and broadleaved woodlands), and higher diversity of fungi, protists, nematodes, arthropods, and annelids was observed in croplands than in less intensively managed systems, such as coniferous and broadleaved woodlands. Also in croplands, we found more specialized eukaryotes, while the composition between croplands was more homogeneous compared to the composition of other ecosystems. The observed high proportion of overlapping taxa between ecosystems also indicates that DNA has accumulated from previous land uses, hence mimicking the land transformations occurring in Europe in the last decades. This strong ecosystem-type influence was linked to soil properties, and particularly, soil pH was driving the richness of fungi, rotifers, and annelids, while plant-available phosphorus drove the richness of protists, tardigrades, and nematodes. Furthermore, the soil organic carbon to total nitrogen ratio crucially explained the richness of fungi, protists, nematodes, and arthropods, possibly linked to decades of agricultural inputs. Our results highlighted the importance of long-term environmental variables rather than variables measured at the time of the sampling in shaping soil eukaryotic communities, which reinforces the need to include those variables in addition to ecosystem type in future monitoring programs and conservation efforts.
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Artrópodes , Ecossistema , Animais , Solo/química , Eucariotos , Carbono , Biodiversidade , Europa (Continente) , Fungos , Microbiologia do SoloRESUMO
Childhood maltreatment and mental health problems are common among young people placed out-of-home. However, evidence on the impact of maltreatment on the course of mental health problems in at-risk populations is sparse. The aim of this longitudinal study is twofold: (a) describe the course of mental health problems and the shift in symptom patterns among adolescents in youth residential care into young adulthood and (b) assess how childhood maltreatment is related to the course of mental health problems. One hundred and sixty-six adolescents in Swiss youth residential care were followed up into young adulthood (36.1% women; MAge-Baseline = 16.1 years; MAge-Follow-Up = 26.4 years). Latent transition analysis was employed to analyze transitions of symptom patterns and their association with maltreatment exposure. We found three latent classes of mental health problems: a "multiproblem"-class (51.8% baseline; 33.7% follow-up), a "low symptom"-class (39.2% baseline; 60.2% follow-up), and an "externalizing"-class (9.0% baseline; 6.0% follow-up). Individuals in the "multiproblem"-class were likely to transition towards less-complex symptom patterns. Higher severity of self-reported childhood maltreatment was associated with more complex and persistent mental health problems. Our study underlines the need for collaboration between residential and psychiatric care systems within and after care placements, with a specialized focus on trauma-informed interventions and care.
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BACKGROUND: Increasing expectancy of life and levels of activity in the growing geriatric population lead to a rising number of prosthetic implants of the hip and consequently the incidence of periprosthetic fractures of the femur increase. The fracture pattern and the possible instability of the stem are a challenge to the orthopaedic surgeon. Treatment options are complete replacement of the implant or a solitary osteosynthesis. The goal of this study was to analyse the feasibility of the operative intervention using a contralateral reversed anatomic distal femoral LISS® locking plate and the radiological and functional outcome in a geriatric cohort. METHODS: We included all patients older than 75 years of age with a Vancouver type B fracture, which have been treated by osteosynthesis using a LISS® (contralateral reversed) plate in our institution in an interdisciplinary ortho-geriatric setting between 7/2013 and 12/2021. Perioperative morbidities, clinical and radiological outcome during follow-up were retrospectively analysed. RESULTS: During the observed time period, 83 patients (mean age: 88 years (range: 76-103), male/female: 26/57) were treated. Most fractures were Vancouver type B2 (n = 45, 54%) followed by B1 (n = 20, 24%) and B3 (n = 18, 22%). The most prevalent postoperative surgical complication was anaemia (n = 73, 88%) followed by infections (n = 12, 14%, urinary infections, pneumonia) and cardiovascular decompensation (n = 8, 10%). Clinical and radiological follow up 6-8 weeks postoperative was possible for 59 patients (70%). The majority of them did not describe pain (n = 50, 85%) and had a good or excellent radiological outcome. Three cases needed revision surgery due to infection and another three due to non-union, loosening of the stem or an additional fracture. 1-year mortality was 30%. CONCLUSION: We are convinced that the reversed contralateral LISS-plate is an easy-to-use implant with a small complication rate but a very successful and high healing rate in a geriatric, polymorbid cohort.
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Artroplastia de Quadril , Fraturas do Fêmur , Fraturas Periprotéticas , Humanos , Masculino , Feminino , Idoso , Idoso de 80 Anos ou mais , Fraturas Periprotéticas/diagnóstico por imagem , Fraturas Periprotéticas/cirurgia , Fraturas Periprotéticas/complicações , Estudos Retrospectivos , Fraturas do Fêmur/diagnóstico por imagem , Fraturas do Fêmur/cirurgia , Artroplastia de Quadril/efeitos adversos , Fêmur/cirurgia , Complicações Pós-Operatórias , Resultado do TratamentoRESUMO
BACKGROUND AND PURPOSE: The retrograde femoral approach is an established technique for implantation of nails for leg lengthening and correction and in cases of distal femoral fractures. The purpose of this study was to determine the 10-year outcome of this technique by analyzing the clinical long-term effects and radiological status of the knee after leg lengthening via a retrograde femoral approach. PATIENTS AND METHODS: This retrospective single-center study included 13 patients (median age at surgery 17 [range 15-20] years) who underwent unilateral, retrograde, femoral lengthening with a motorized nail. Outcome measurements were graded variables of the SF-36, ISKD score, and Lysholm score. MRI of both knees was performed in all patients. MRI was evaluated for the presence of degenerative changes and compared with the healthy contralateral knee. Cartilage condition was graded according to the International Cartilage Repair Society (ICRS) scoring system. RESULTS: All patients were pain-free and had a full range of motion 10 (range 10.0-12.2) years after surgery. All postoperative knees showed fibrosis of Hoffa's fat pad and moderate to severe cartilage defects (ICRS Grade 2-4) of the trochlear groove (nail entry site). 6 out of 13 operated knees exhibited retropatellar cartilage defects. CONCLUSION: Our study showed that patients were pain-free, but cartilage defects at the entry point and arthrofibrosis at Hoffa's fat pad were observed without causing clinical impairment.
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Alongamento Ósseo , Articulação do Joelho , Humanos , Adolescente , Adulto Jovem , Adulto , Estudos Retrospectivos , Articulação do Joelho/diagnóstico por imagem , Articulação do Joelho/cirurgia , Alongamento Ósseo/métodos , Fêmur/diagnóstico por imagem , Fêmur/cirurgia , Radiografia , Resultado do TratamentoRESUMO
Questionnaire on Treatment Satisfaction in Inpatient Child and Adolescent Psychiatry (FBZ-KJP) - Results of a Swiss Pilot Study Abstract: Objectives: Patient satisfaction is an established indicator for medical interventions. Existing questionnaires for the assessment of patient satisfaction in child and adolescent psychiatry are too global to target quality improvement in child and adolescent psychiatric hospitals. The assessment of patient satisfaction in child and adolescent psychiatry is very challenging because specific demands (development status, role of parents in treatment) have been taken into account. Therefore, an expert team leaded by the Swiss Society of Child and Adolescent Psychiatry developed a targeted instrument to assess patient satisfaction in both language regions (i. e., German and French). Methods: The article reviews the development of a new child and adolescent psychiatric questionnaire for the assessment of patient satisfaction as well as the findings of a survey conducted in a representative sample of 174 patients and 145 parents in six hospitals. Results: The internal consistency (Cronbach's α = .93) is excellent. The questionnaire has high levels of both convergence and face validity, and the correlation with the Client Satisfaction Questionnaire (CSQ-8) is ρ = .80 (patient-report) and .83 (parent-report). Furthermore, this questionnaire reveals the relative strengths and weaknesses of individual hospitals. The correlation between patient and parent assessment is, as expected, moderate (ρ = .29, for the total score and ρ = .39 for the CSQ-8). Conclusions: The Patient Satisfaction Questionnaire can be recommended to professionals as a standard for collecting data on client satisfaction within child and adolescent psychiatry.
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Psiquiatria do Adolescente , Pacientes Internados , Adolescente , Humanos , Criança , Projetos Piloto , Reprodutibilidade dos Testes , Inquéritos e Questionários , Satisfação Pessoal , PsicometriaRESUMO
BACKGROUND: Previous research in animals and humans has demonstrated a potential role of stress regulatory systems, such as the hypothalamic-pituitary-adrenal (HPA) axis and the endocannabinoid (eCB) system, in the development of substance use disorders. We thus investigated alterations of HPA and eCB markers in individuals with chronic cocaine use disorder by using an advanced hair analysis technique. METHODS: We compared hair concentrations of glucocorticoids (cortisone, cortisol) and the eCBs 2-arachidonylglycerol, anandamide (AEA), oleoylethanolamide (OEA), and palmitoylethanolamide (PEA) between 48 recreational cocaine users (RCU), 25 dependent cocaine users (DCU), and 67 stimulant-naïve controls. Self-reported substance use and hair concentrations of substances were also assessed. RESULTS: Significantly higher concentrations of hair cortisone were found in RCU and DCU compared with controls. Hair concentrations of OEA and PEA were significantly lower in DCU compared with RCU and controls. Additionally, within cocaine users, elevated cocaine hair concentration was a significant predictor for increased glucocorticoid and decreased OEA hair levels. Moreover, higher 3,4-methylâenedioxymethamphetamine hair concentration was correlated with elevated cortisone and AEA, OEA, and PEA levels in hair within cocaine users, whereas more self-reported cannabis use was associated with lower eCBs levels in hair across the total sample. CONCLUSION: Our findings support the hypothesis that the HPA axis and eCB system might be important regulators for substance use disorders. The mechanistic understanding of changes in glucocorticoid and eCB levels in future research might be a promising pharmacological target to reduce stress-induced craving and relapse specifically in cocaine use disorder.
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Cocaína , Cortisona , Animais , Endocanabinoides , Glucocorticoides , Cabelo , Humanos , Sistema Hipotálamo-Hipofisário , Sistema Hipófise-SuprarrenalRESUMO
Chromosomes are folded, spatially organized, and regulated by epigenetic marks. How chromosomal architecture is connected to the epigenome is not well understood. We show that chromosomal architecture of Arabidopsis is tightly linked to the epigenetic state. Furthermore, we show how physical constraints, such as nuclear size, correlate with the folding principles of chromatin. We also describe a nuclear structure, termed KNOT, in which genomic regions of all five Arabidopsis chromosomes interact. These KNOT ENGAGED ELEMENT (KEE) regions represent heterochromatic islands within euchromatin. Similar to PIWI-interacting RNA clusters, such as flamenco in Drosophila, KEEs represent preferred landing sites for transposable elements, which may be part of a transposon defense mechanism in the Arabidopsis nucleus.
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Arabidopsis/genética , Cromatina/metabolismo , Cromossomos de Plantas/metabolismo , Drosophila/genética , Animais , Arabidopsis/metabolismo , Proteínas de Arabidopsis/genética , Núcleo Celular/ultraestrutura , Cromatina/química , Cromatina/ultraestrutura , Cromossomos de Plantas/química , Cromossomos de Plantas/ultraestrutura , DNA de Plantas/química , Drosophila/metabolismo , Epigenômica/métodos , Hibridização in Situ Fluorescente , Conformação de Ácido Nucleico , Análise de Componente Principal , Análise de Sequência de DNARESUMO
The infliction of war and military aggression upon children must be considered a violation of their basic human rights and can have a persistent impact on their physical and mental health and well-being, with long-term consequences for their development. Given the recent events in Ukraine with millions on the flight, this scoping policy editorial aims to help guide mental health support for young victims of war through an overview of the direct and indirect burden of war on child mental health. We highlight multilevel, need-oriented, and trauma-informed approaches to regaining and sustaining outer and inner security after exposure to the trauma of war. The impact of war on children is tremendous and pervasive, with multiple implications, including immediate stress-responses, increased risk for specific mental disorders, distress from forced separation from parents, and fear for personal and family's safety. Thus, the experiences that children have to endure during and as consequence of war are in harsh contrast to their developmental needs and their right to grow up in a physically and emotionally safe and predictable environment. Mental health and psychosocial interventions for war-affected children should be multileveled, specifically targeted towards the child's needs, trauma-informed, and strength- and resilience-oriented. Immediate supportive interventions should focus on providing basic physical and emotional resources and care to children to help them regain both external safety and inner security. Screening and assessment of the child's mental health burden and resources are indicated to inform targeted interventions. A growing body of research demonstrates the efficacy and effectiveness of evidence-based interventions, from lower-threshold and short-term group-based interventions to individualized evidence-based psychotherapy. Obviously, supporting children also entails enabling and supporting parents in the care for their children, as well as providing post-migration infrastructures and social environments that foster mental health. Health systems in Europe should undertake a concerted effort to meet the increased mental health needs of refugee children directly exposed and traumatized by the recent war in Ukraine as well as to those indirectly affected by these events. The current crisis necessitates political action and collective engagement, together with guidelines by mental health professionals on how to reduce harm in children either directly or indirectly exposed to war and its consequences.
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Transtornos Mentais , Refugiados , Transtornos de Estresse Pós-Traumáticos , Criança , Humanos , Saúde Mental , Pais/psicologia , Psicoterapia , Refugiados/psicologia , Transtornos de Estresse Pós-Traumáticos/psicologiaRESUMO
While children and adolescents placed in child welfare or juvenile justice out-of-home care show higher prevalence rates of mental disorders compared to the general population, it remains unclear whether this pattern persists into adulthood. A quantitative synthesis of existing studies is lacking. The aim of this meta-analysis was to estimate the prevalence rates for mental disorders among adults with a foster or residential child welfare or juvenile justice care history, comparing them where possible to rates among the general population. PubMed, PsycInfo, EMBASE, and Web of Science were systematically searched for epidemiological studies published up to 28 October 2020. Nineteen studies, totaling 604,257 participants, met our inclusion criteria. Random-effects models were used for prevalence rates and odds ratios (OR) of mental disorders, and study quality was rated. A prevalence rate of 30% [95% CI (23.36, 37.36)] for any mental disorder in adults with a child welfare care history was found (3-17% for specific disorders). A prevalence rate of 45% [95% CI (42.38, 47.38)] for any mental disorder was found in adults with a juvenile justice care history (6-66% for specific disorders). For out-of-home placement history, adult mental disorders were significantly higher than in the general population (OR = 1.33-2.76). Studies differed in terms of methodology and the disorder groups considered, so heterogeneity between effect sizes ranged from low to high. Our findings suggest that the high risk that mental health issues will persist in adults with an out-of-home placement history needs to be taken seriously in the transition from adolescence to adulthood. The care systems involved need to collaborate and to be aware of these risks.
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Serviços de Assistência Domiciliar , Delinquência Juvenil , Transtornos Mentais , Criança , Adolescente , Adulto , Humanos , Delinquência Juvenil/psicologia , Transtornos Mentais/epidemiologia , Proteção da Criança/psicologia , Estudos LongitudinaisRESUMO
This paper examines the distribution of attachment representations among social work professionals using the Adult Attachment Projective Picture System (AAP; George, West, Pettem, 1997). In this sample, the influence of attachment on the occurrence of burnout syndrome is investigated, as this is considered as a trigger for further mental and physical illnesses. For this purpose, 79 social pedagogical professionals from the German-speaking part of Switzerland were examined over four time points using the Burnout Screening Scales - BOSS. The following distribution of attachment representations was found using the AAP: 25.3 % secure, 38.0 % insecure dismissing, 27.8 % insecure preoccupied, and 8.9 % unresolved trauma. This distribution differs significantly from other samples of non-clinical adults and psychotherapists. Interestingly, no general associations emerged between insecure attachment representations and burnout. A significant positive correlation was shown between "unresolved trauma" and the suspected diagnosis of "burnout occupation". The so far few but contradictory empirical findings on attachment representations among professionals require further research activities as well as an intensive sensitization with regard to attachment theory in basic and further training courses and a further establishment of self-awareness and supervision components in all psychosocial fields of work.
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Apego ao Objeto , Assistentes Sociais , Adulto , Esgotamento Psicológico , Humanos , SuíçaRESUMO
The capacity to respond to environmental challenges ultimately relies on phenotypic variation which manifests from complex interactions of genetic and nongenetic mechanisms through development. While we know something about genetic variation and structure of many species of conservation importance, we know very little about the nongenetic contributions to variation. Rhizophora mangle is a foundation species that occurs in coastal estuarine habitats throughout the neotropics where it provides critical ecosystem functions and is potentially threatened by anthropogenic environmental changes. Several studies have documented landscape-level patterns of genetic variation in this species, but we know virtually nothing about the inheritance of nongenetic variation. To assess one type of nongenetic variation, we examined the patterns of DNA sequence and DNA methylation in maternal plants and offspring from natural populations of R. mangle from the Gulf Coast of Florida. We used a reduced representation bisulfite sequencing approach (epi-genotyping by sequencing; epiGBS) to address the following questions: (a) What are the levels of genetic and epigenetic diversity in natural populations of R. mangle? (b) How are genetic and epigenetic variation structured within and among populations? (c) How faithfully is epigenetic variation inherited? We found low genetic diversity but high epigenetic diversity from natural populations of maternal plants in the field. In addition, a large portion (up to ~25%) of epigenetic differences among offspring grown in common garden was explained by maternal family. Therefore, epigenetic variation could be an important source of response to challenging environments in the genetically depauperate populations of this foundation species.
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Rhizophoraceae , Animais , Metilação de DNA , Ecossistema , Epigênese Genética , Rhizophoraceae/genéticaRESUMO
Childhood adversity (CA) and adulthood traumatic experiences (ATEs) are common and unequally distributed in the general population. Early stressors may beget later stressors and alter life-course trajectories of stressor exposure. Gender differences exist regarding the risk of specific stressors. However, few studies have examined the associations between specific types of CA and ATEs. Using a large-scale sample of older adults, we aimed to (a) determine if specific or cumulative CA increased the risk for specific or cumulative ATEs and (b) examine whether these associations were moderated by gender. In a sample from the U.S. Health and Retirement Study (N = 15,717; Mage = 67.57 years, SD = 10.54), cross-sectional Poisson and logistic regression models were fitted to assess the specific and cumulative associations between CA and ATEs. Overall, cumulative CA was associated with a larger risk ratio of ATEs, adjusted for covariates: aRRRs = 1.28, 1.63, and 1.97 for 1, 2, and 3-4 adverse events in childhood, respectively. Cumulative CA was particularly strongly associated with adulthood physical attacks, aOR = 5.66, and having a substance-abusing spouse or child, aOR = 4.00. Childhood physical abuse was the strongest independent risk factor for cumulative ATEs, aRRR = 1.49, and most strongly associated with adulthood physical attacks, aOR = 3.41. Gender moderated the association between cumulative CA and cumulative ATEs, with slightly stronger associations between cumulative CA and ATEs for women than men. Given that CA and ATEs perpetuate health disparities worldwide, reducing their incidence and effects should be major priorities for public health.
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Experiências Adversas da Infância/psicologia , Trauma Psicológico/psicologia , Experiências Adversas da Infância/estatística & dados numéricos , Idoso , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Trauma Psicológico/epidemiologia , Medição de Risco , Educação Sexual , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Transtornos de Estresse Pós-Traumáticos/psicologia , Estados Unidos/epidemiologiaRESUMO
BACKGROUND: The aim of the current study is to examine the psychometric properties of the German Version of the Youth Psychopathic traits Inventory-Short Version (YPI-S). METHODS: A sample of 856 adolescents (age: 15-19) from the German-speaking part of Switzerland was included. All participants completed the 50-item YPI, of which we derived the 18 items of the YPI-S. Furthermore, participants completed the Massachusetts Youth Screening Instrument-Version-2 (MAYSI-2), as well a self-report delinquency questionnaire. RESULTS: We were able to replicate a three-factor structure and found moderate to good internal consistency for the total score as well as for the three dimensions of the YPI-S. Measurement invariance across gender was established. Furthermore, we found positive small to medium correlations with both internalizing and externalizing mental health problems, substance abuse problems, and offending behavior. CONCLUSIONS: Our results suggest that the German version of the YPI-S is a reliable and valid screening instrument for psychopathic traits in both boys and girls from the general population in the German-speaking part of Switzerland.
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Transtorno da Personalidade Antissocial , Adolescente , Adulto , Transtorno da Personalidade Antissocial/diagnóstico , Feminino , Humanos , Masculino , Massachusetts , Inventário de Personalidade , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários , Suíça , Adulto JovemRESUMO
BACKGROUND: Professional caregivers working in child and youth welfare institutions are frequently faced with the complex mental health issues, emotional needs and challenging coping strategies of clients with cumulated traumatic experiences, leaving them prone to developing high levels of stress, burn-out and compassion fatigue. Trauma-informed care (TIC) is a milieu-therapeutic approach that aims to promote the self-efficacy and self-care of youth welfare staff by guiding them to a better understanding of their own and their clients' stress symptoms and countertransference. Despite increasing efforts to implement TIC practices, and more widespread recognition of their value in youth welfare systems, there is a lack of studies evaluating the effectiveness of this approach. The aim of this study was to assess the effects of TIC practices in youth welfare institutions on both the physiological stress of staff members and clients' physical aggression towards their caregivers. . METHODS: Data was obtained from a longitudinal study investigating the effectiveness of TIC in 14 residential youth welfare institutions. Our sample consisted of 47 youth welfare employees (66.0% female) aged from 23 to 60 years (M = 37.4, SD = 10.4 years). Hair cortisol concentration (HCC) and occurrences of client physical aggression were assessed at four annual measurement time points (T1 to T4). RESULTS: Participants in five institutions employing TIC practices (intervention group) showed significantly lower HCC at T4 than staff members from institutions who did not receive training in TIC (control group), indicating reduced physiological stress levels. At T4, the intervention group reported significantly less physical aggression than the control group. CONCLUSIONS: TIC might be a promising approach for reducing the emotional burden of employees and institutions should invest in training their staff in TIC practices. More research is necessary, to investigate the benefits and efficacy of TIC, both to youths and staff members, and to foster a better understanding of which specific factors may contribute to stress reduction.
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Adaptação Psicológica , Agressão/psicologia , Esgotamento Profissional/psicologia , Cabelo/química , Pessoal de Saúde/psicologia , Hidrocortisona/análise , Estresse Psicológico , Adolescente , Adulto , Criança , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Adulto JovemRESUMO
The Influence of Personal Resources on Job Satisfaction Among Professionals in the Inpatient Care of Burdened Children and Adolescents Professionals in the inpatient care of burdened and partially traumatized children and adolescents are confronted with high demands in their everyday work. If these professionals do not have the necessary resources to carry out their work, their job satisfaction can be affected negatively. In the present study, the connections between the personal resources action competence, emotional competence, self-efficacy and self-care and job satisfaction were investigated on a sample of N = 543 professionals working in the (inpatient) care of children and adolescents. The survey was conducted as part of the accompanying research of an online course called "Trauma informed Care". Correlations as well as a multiple regression were calculated for the connections between personal resources and job satisfaction. Moderate to strong correlations were identified between personal resources and job satisfaction. The regression model revealed self-efficacy, followed by self-care, to be the most important predictor of job satisfaction. Less importance could be ascribed to emotional competence as a predictor of job satisfaction. Action competence showed no effects in the model. The results indicate the importance of personal resources for job satisfaction. These should be promoted in a targeted manner to increase job satisfaction and thus counteract the tendency of fluctuation and shortage of professionals in the area of child and youth welfare and thereby ensuring high quality care of the vulnerable population.
Assuntos
Pessoal de Saúde/psicologia , Recursos em Saúde , Pacientes Internados , Satisfação no Emprego , Adolescente , Criança , Humanos , Autocuidado , Autoeficácia , Inquéritos e QuestionáriosRESUMO
The wheat Lr34res allele, coding for an ATP-binding cassette transporter, confers durable resistance against multiple fungal pathogens. The Lr34sus allele, differing from Lr34res by two critical nucleotide polymorphisms, is found in susceptible wheat cultivars. Lr34res is functionally transferrable as a transgene into all major cereals, including rice, barley, maize, and sorghum. Here, we used transcriptomics, physiology, genetics, and in vitro and in vivo transport assays to study the molecular function of Lr34. We report that Lr34res results in a constitutive induction of transcripts reminiscent of an abscisic acid (ABA)-regulated response in transgenic rice. Lr34-expressing rice was altered in biological processes that are controlled by this phytohormone, including dehydration tolerance, transpiration and seedling growth. In planta seedling and in vitro yeast accumulation assays revealed that both LR34res and LR34sus act as ABA transporters. However, whereas the LR34res protein was detected in planta the LR34sus version was not, suggesting a post-transcriptional regulatory mechanism. Our results identify ABA as a substrate of the LR34 ABC transporter. We conclude that LR34res-mediated ABA redistribution has a major effect on the transcriptional response and physiology of Lr34res-expressing plants and that ABA is a candidate molecule that contributes to Lr34res-mediated disease resistance.