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Mental health professionals are one of the major sources of stigma for persons with schizophrenia and their families. The stereotype of incompetence is central in this stigmatization, whereas valuing skills is a fundamental aspect of mental health care and recovery.
Objectives
The aim of this study is to identify the domains of competence stigmatized in schizophrenia by mental health professionals and the factors associated with this stigmatization.
Methods
An online survey was conducted with a specific measure of the stereotype of incompetence and these associated factors. Participants were to be mental health professionals who work or have worked with persons with schizophrenia. These participants were recruited through professional social networks.
Results
Responses of 164 participants were analyzed. The results reported four highly stigmatized skill domains: ability to relate well socially, ability to be effective in their work, ability to make decisions about their health, and ability to control their emotions. Intelligence was found to be less stigmatized than the other dimensions. Recovery beliefs, categorical beliefs, and perceived similarities were factors associated with the stereotype of incompetence.
Conclusions
Responses of 164 participants were analyzed. The results reported four highly stigmatized skill domains: ability to relate well socially, ability to be effective in their work, ability to make decisions about their health, and ability to control their emotions. Intelligence was found to be less stigmatized than the other dimensions. Recovery beliefs, categorical beliefs, and perceived similarities were factors associated with the stereotype of incompetence.
Mental health care is considered to be one of the main sources of mental illness stigmatization. Detailed information about these stigmatization experiences is needed to reduce stigma in mental health practices.
Objectives
The study aimed i) to identify the most relevant stigmatizing situations in mental health care encountered by users and families, ii) to characterize the relative importance of these situations in terms of frequency, experienced stigmatization and suffering, and iii) to identify individual and contextual factors associated with these experiences.
Methods
In a focus group, users were asked to select the 15 most relevant stigmatization situations among those they elicited and those that were taken from the literature. An online survey was then conducted among users and family members to characterize these situations and identify predictors.
Results
A total of 235 participants were included: 59 participants with schizophrenia diagnosis, 96 with other psychiatric diagnoses and 80 family members. The results revealed 15 situations with different levels of frequency, stigmatization and suffering. Participants with a diagnosis of schizophrenia experienced more situations of stigmatization and with a higher frequency. Moreover, factors such as recovery-oriented practices and measures without consent were the best predictors of experienced stigmatization.
Conclusions
These original stigmatization situations could be targeted to reduce stigmatization and associated suffering in mental health practices. Results strongly suggest that recovery-oriented practice should be fostered to fight stigma in mental health care.
The consequences of schizophrenia stigma are numerous and highly damaging to individuals, their families, the health care system and society. Mental health professionals (MHP) are considered to be one of the main sources of schizophrenia stigmatization.
Objectives
The aim of the study was to identify individual and contextual factors associated with stigmatization in MHP in its three dimensions.
Methods
An online survey was conducted with specific measures of MHP stigmatization (stereotypes, prejudices and discrimination). Four categories of potential associated factors were also measured: sociodemographic information, contextual characteristics (e.g. work setting), individual characteristics (e.g. profession, recovery-oriented practices) and theoretical beliefs (e.g. biological beliefs, perceived similarities, continuum beliefs). Models of prediction were computed when applicable.
Results
Responses of 357 MHP were analysed. The main factors associated with stigmatization (stereotypes, prejudice) in MHP are of two types: i) individual beliefs (about mental illness: biological etiological beliefs, categorical beliefs; or about MHP themselves: professional utility beliefs, similarity beliefs) and ii) characteristics of practices (recovery oriented practice, work setting, profession).
Conclusions
These original results suggest new strategies for reducing stigma in mental health practices such as focusing on individual beliefs and fostering recovery-oriented practice and professional utility beliefs.
Two common approaches to identify subgroups of patients with bipolar disorder are clustering methodology (mixture analysis) based on the age of onset, and a birth cohort analysis. This study investigates if a birth cohort effect will influence the results of clustering on the age of onset, using a large, international database.
Methods:
The database includes 4037 patients with a diagnosis of bipolar I disorder, previously collected at 36 collection sites in 23 countries. Generalized estimating equations (GEE) were used to adjust the data for country median age, and in some models, birth cohort. Model-based clustering (mixture analysis) was then performed on the age of onset data using the residuals. Clinical variables in subgroups were compared.
Results:
There was a strong birth cohort effect. Without adjusting for the birth cohort, three subgroups were found by clustering. After adjusting for the birth cohort or when considering only those born after 1959, two subgroups were found. With results of either two or three subgroups, the youngest subgroup was more likely to have a family history of mood disorders and a first episode with depressed polarity. However, without adjusting for birth cohort (three subgroups), family history and polarity of the first episode could not be distinguished between the middle and oldest subgroups.
Conclusion:
These results using international data confirm prior findings using single country data, that there are subgroups of bipolar I disorder based on the age of onset, and that there is a birth cohort effect. Including the birth cohort adjustment altered the number and characteristics of subgroups detected when clustering by age of onset. Further investigation is needed to determine if combining both approaches will identify subgroups that are more useful for research.
Postoperative cognitive impairment is among the most common medical complications associated with surgical interventions – particularly in elderly patients. In our aging society, it is an urgent medical need to determine preoperative individual risk prediction to allow more accurate cost–benefit decisions prior to elective surgeries. So far, risk prediction is mainly based on clinical parameters. However, these parameters only give a rough estimate of the individual risk. At present, there are no molecular or neuroimaging biomarkers available to improve risk prediction and little is known about the etiology and pathophysiology of this clinical condition. In this short review, we summarize the current state of knowledge and briefly present the recently started BioCog project (Biomarker Development for Postoperative Cognitive Impairment in the Elderly), which is funded by the European Union. It is the goal of this research and development (R&D) project, which involves academic and industry partners throughout Europe, to deliver a multivariate algorithm based on clinical assessments as well as molecular and neuroimaging biomarkers to overcome the currently unsatisfying situation.
We present a broad study of linear, clustered, noble gas puffs irradiated with the frequency doubled (527 nm) Titan laser at Lawrence Livermore National Laboratory. Pure Ar, Kr, and Xe clustered gas puffs, as well as two mixed-gas puffs consisting of KrAr and XeKrAr gases, make up the targets. Characterization experiments to determine gas-puff density show that varying the experimental parameter gas-delay timing (the delay between gas puff initialization and laser-gas-puff interaction) provides a simple control over the gas-puff density. X-ray emission (>1.4 keV) is studied as a function of gas composition, density, and delay timing. Xe gas puffs produce the strongest peak radiation in the several keV spectral region. The emitted radiation was found to be anisotropic, with smaller X-ray flux observed in the direction perpendicular to both laser beam propagation and polarization directions. The degree of anisotropy is independent of gas target type but increases with photon energy. X-ray spectroscopic measurements estimate plasma parameters and highlight their difference with previous studies. Electron beams with energy in excess of 72 keV are present in the noble gas-puff plasmas and results indicate that Ar plays a key role in their production. A drastic increase in harder X-ray emissions (X-ray flash effect) and multi-MeV electron-beam generation from Xe gas-puff plasma occurred when the laser beam was focused on the front edge of the linear gas puff.
Introduction: Understanding the spatial distribution of opioid abuse at the local level may facilitate community intervention strategies. The purpose of this analysis was to apply spatial analytical methods to determine clustering of opioid-related emergency medical services (EMS) responses in the City of Calgary. Methods: Using opioid-related EMS responses in the City of Calgary between January 1st through October 31st, 2017, we estimated the dissemination area (DA) specific spatial randomness effects by incorporating the spatial autocorrelation using intrinsic Gaussian conditional autoregressive model and generalized linear mixed models (GLMM). Global spatial autocorrelation was evaluated by Morans I index. Both Getis-Ord Gi and the LISA function in Geoda were used to estimate the local spatial autocorrelation. Two models were applied: 1) Poisson regression with DA-specific non-spatial random effects; 2) Poisson regression with DA-specific G-side spatial random effects. A pseudolikelihood approach was used for model comparison. Two types of cluster analysis were used to identify the spatial clustering. Results: There were 1488 opioid-related EMS responses available for analysis. Of the responses, 74% of the individuals were males. The median age was 33 years ( IQR: 26-42 years) with 65% of individuals between 20 and 39 years, and 27% between 40 and 64 years. In 62% of EMS responses, poisoning/overdose was the chief complaint. The global Morans Index implied the presence of global spatial autocorrelation. Comparing the two models applied suggested that the spatial model provided a better fit for the adjusted opioid-related EMS response rate. Calgary Center and East were identified as hot spots by both types of cluster analysis. Conclusion: Spatial modeling has a better predictability to assess potential high risk areas and identify locations for community intervention strategies. The clusters identified in Calgarys Center and East may have implications for future response strategies.
Introduction: Patients presenting with high grade (HG) subarachnoid hemorrhage (SAH) from aneurysmal rupture may have persisting neurologic deficits which may lead to questioning the decision of treating aggressively. The objective of this study aims at analyzing outcome and long-term quality of life (QOL) of patients with HG SAH treated surgically. Methods: Retrospective study of patients with Hunt Hess (HH) grade IV or V SAH treated surgically at our institution. Long-term outcome was evaluated based on the modified Rankin Scale (mRS) at 3 years. Survivors were evaluated for QOL using various scales. Results: 63 patients (mean age of 52 year-old) were included. Intraparenchymal hemorrhage (IPH) was found in 85% of cases. 19 patients died. Predictive factors of poor prognosis and mortality were initial cerebral ischemia (p=0.003) and IPH (p=0.007). Favourable outcome (mRS 0-3) was found in 41% of patients. QOL questionnaires revealed that 80 % of responders showed more than 50% recovery. Mild or absent depression was observed in 78% of patients. Conclusion: In this surgical series, performed in an endovascular era, nearly all patients presented with SAH-associated IPH at admission. Despite the presence of such negative prognostic factor and the poor condition at admission, a high rate of favourable outcome and QOL was observed, therefore justifying aggressive surgical treatment.
In the original publication of ‘Riding the Orange Wave: Leadership, Values, Issues and the 2011 Canadian Election’ (published online January 10, 2014), an error appeared. The caption for Figure 1 appears incorrectly; it should read, “Campaign Dynamics of Vote Intensions.” The publisher regrets this error.
Neuroimaging measures of behavioral and emotional dysregulation can yield biomarkers denoting developmental trajectories of psychiatric pathology in youth. We aimed to identify functional abnormalities in emotion regulation (ER) neural circuitry associated with different behavioral and emotional dysregulation trajectories using latent class growth analysis (LCGA) and neuroimaging.
Method
A total of 61 youth (9–17 years) from the Longitudinal Assessment of Manic Symptoms study, and 24 healthy control youth, completed an emotional face n-back ER task during scanning. LCGA was performed on 12 biannual reports completed over 5 years of the Parent General Behavior Inventory 10-Item Mania Scale (PGBI-10M), a parental report of the child's difficulty regulating positive mood and energy.
Results
There were two latent classes of PGBI-10M trajectories: high and decreasing (HighD; n = 22) and low and decreasing (LowD; n = 39) course of behavioral and emotional dysregulation over the 12 time points. Task performance was >89% in all youth, but more accurate in healthy controls and LowD versus HighD (p < 0.001). During ER, LowD had greater activity than HighD and healthy controls in the dorsolateral prefrontal cortex, a key ER region, and greater functional connectivity than HighD between the amygdala and ventrolateral prefrontal cortex (p's < 0.001, corrected).
Conclusions
Patterns of function in lateral prefrontal cortical–amygdala circuitry in youth denote the severity of the developmental trajectory of behavioral and emotional dysregulation over time, and may be biological targets to guide differential treatment and novel treatment development for different levels of behavioral and emotional dysregulation in youth.
Countries of the Wider Caribbean have committed to principled ocean governance through several multilateral environmental and fisheries agreements at both the regional (e.g., the Cartagena Convention SPAW Protocol) and international level (e.g., the Convention on Biological Diversity, the United Nations Fish Stocks Agreement, the FAO Code of Conduct for Responsible Fishing). They have also committed to the 2002 World Summit on Sustainable Development (WSSD) targets for fisheries and biodiversity conservation. However, the ongoing challenge is to put in place the measures required to give effect to these principles at the local, national and regional levels (Fanning et al. 2009). While not minimising the important role of science in an ecosystem approach to managing the living marine resources of the Wider Caribbean Region, the chapters in this book serve to highlight the importance that regional experts have placed on the role of governance to address the problems in the region.
This synthesis chapter presents the outputs of a discussion specifically relating to the role of governance in achieving and implementing a shared vision for ecosystem-based management (EBM) in the Wider Caribbean, using the process described in Chapter 1. In terms of structure, the chapter first describes a vision for governance and reports on the priorities assigned to the identified vision elements. It then discusses how the vision might be achieved by taking into account assisting factors (those that facilitate achievement) and resisting factors (those that inhibit achievement). The chapter concludes with guidance on the strategic direction needed to implement the vision, identifying specific actions to be undertaken for each of the vision elements.
The Vision
The occupational breakdown of members of the Governance Working Group reflected the diversity of affiliations present at the EBM Symposium and included governmental, intergovernmental, academic, non-governmental and private sector (fishers and fishing industry and consulting) representatives. With guidance provided by the facilitator, this diverse grouping of participants was asked to first address the question: “What do you see in place in 10 years’ time when EBM/EAF has become a reality in the Caribbean?”. This diversity provided for a fruitful and comprehensive visioning process, the results of which are summarised in Table 25.1, in terms of the key vision elements and their subcomponents, and in Figure 25.1, which illustrates the level of priority assigned to each of the vision elements.
Patients with major depressive disorder (MDD) present with highly heterogeneous symptom profiles. We aimed to examine whether individual differences in amygdala activity to emotionally salient stimuli were related to heterogeneity in lifetime levels of depressive and subthreshold manic symptoms among adults with MDD.
Method
We compared age- and gender-matched adults with MDD (n = 26) with healthy controls (HC, n = 28). While undergoing functional magnetic resonance imaging, participants performed an implicit emotional faces task: they labeled a color flash superimposed upon initially neutral faces that dynamically morphed into one of four emotions (angry, fearful, sad, happy). Region of interest analyses examined group differences in amygdala activity. For conditions in which adults with MDD displayed abnormal amygdala activity versus HC, within-group analyses examined amygdala activity as a function of scores on a continuous measure of lifetime depression-related and mania-related pathology.
Results
Adults with MDD showed significantly greater right-sided amygdala activity to angry and happy conditions than HC (p < 0.05, corrected). Multiple regression analyses revealed that greater right-amygdala activity to the happy condition in adults with MDD was associated with higher levels of subthreshold manic symptoms experienced across the lifespan (p = 0.002).
Conclusions
Among depressed adults with MDD, lifetime features of subthreshold mania were associated with abnormally elevated amygdala activity to emerging happy faces. These findings are a first step toward identifying biomarkers that reflect individual differences in neural mechanisms in MDD, and challenge conventional mood disorder diagnostic boundaries by suggesting that some adults with MDD are characterized by pathophysiological processes that overlap with bipolar disorder.
Individuals with bipolar disorder demonstrate abnormal social function. Neuroimaging studies in bipolar disorder have shown functional abnormalities in neural circuitry supporting face emotion processing, but have not examined face identity processing, a key component of social function. We aimed to elucidate functional abnormalities in neural circuitry supporting face emotion and face identity processing in bipolar disorder.
Method
Twenty-seven individuals with bipolar disorder I currently euthymic and 27 healthy controls participated in an implicit face processing, block-design paradigm. Participants labeled color flashes that were superimposed on dynamically changing background faces comprising morphs either from neutral to prototypical emotion (happy, sad, angry and fearful) or from one identity to another identity depicting a neutral face. Whole-brain and amygdala region-of-interest (ROI) activities were compared between groups.
Results
There was no significant between-group difference looking across both emerging face emotion and identity. During processing of all emerging emotions, euthymic individuals with bipolar disorder showed significantly greater amygdala activity. During facial identity and also happy face processing, euthymic individuals with bipolar disorder showed significantly greater amygdala and medial prefrontal cortical activity compared with controls.
Conclusions
This is the first study to examine neural circuitry supporting face identity and face emotion processing in bipolar disorder. Our findings of abnormally elevated activity in amygdala and medial prefrontal cortex (mPFC) during face identity and happy face emotion processing suggest functional abnormalities in key regions previously implicated in social processing. This may be of future importance toward examining the abnormal self-related processing, grandiosity and social dysfunction seen in bipolar disorder.
Le développement des réacteurs nucléaires de génération IV et des réacteurs à fusion
nucléaire requiert l’utilisation de matériaux possédant de bonnes propriétés mécaniques
au-delà de 550 °C. En service, ces matériaux seront soumis à du fluage à haute température
couplé à des sollicitations cycliques de fatigue. Les aciers martensitiques à 9–12 % Cr
sont pressentis pour ces applications; cependant leur comportement en fatigue et
fatigue-fluage à haute température est encore insuffisant : la microstructure
martensitique grossit et l’acier s’adoucit rapidement. Afin de stabiliser sa
microstructure, l’acier commercial P91 a subi un traitement thermo-mécanique incluant du
laminage à 600 °C suivi d’un revenu d’une heure à 700 °C. Les observations
microstructurales confirment que le traitement thermo-mécanique a conduit à une martensite
plus fine, émaillée de nombreux et fins précipités de type MX. Les divers essais
mécaniques réalisés prouvent que ces changements ont un effet positif sur les propriétés
de l’acier : sa dureté est plus élevée de 100 Hv par rapport à l’acier P91 à réception, et
sa limite d’élasticité conventionnelle est supérieure de 430 MPa à 20 °C et de 220 MPa à
550 °C. La durée de vie du P91 optimisé en fluage à 650 °C sous 120 MPa est plus de 14
fois supérieure à celle du P91; et l’essai de fatigue à 650 °C et 0,7 % de déformation
totale montre un adoucissement légèrement moins rapide.
We present an experimental study of pattern formation in a Dielectric
Barrier Discharge in Neon at 100 torr and 1 mm gap. An intensified CCD camera
is used to analyze the time evolution of the patterns during one cycle of
the voltage waveform. The formation of a hexagonal pattern of filaments in a
transient, glow-like regime is observed, followed by a honeycomb structure
that corresponds to a Townsend discharge occurring outside the regions
delimited by the previous filaments. A 2D fluid model can qualitatively
reproduce these features and is used to help interpreting the experimental
results.
Background and objective: The ease of endotracheal intubation has been recently shown to affect the incidence of laryngeal injury. There remains controversy as to whether or not a muscle relaxant is routinely required for tracheal intubation. This study examined conditions of intubation in our routine practice, which employs a relaxant-sparing approach. Methods: All adult patients scheduled for surgery with general anaesthesia were prospectively included. A muscle relaxant was used to facilitate intubation when it was required for the surgical procedure and/or otherwise regarded as necessary by the anaesthesiologist. In the remaining patients, a relaxant-free intubation was performed. Intubating conditions were evaluated in all the patients as well as the post-intubation laryngeal symptoms. Results: Between March and July 2003, 612 patients were consecutively included. A muscle relaxant was used in 32% of patients and no relaxant in the remaining patients (68%). Clinically acceptable intubating scores were observed in 98.4% overall with no significant difference between the two groups. Excellent conditions occurred more frequently in the relaxant group as compared to the relaxant-free group, 87% vs. 72%, P = 0.005. Laryngeal symptoms occurred in 184 (33%) patients with no difference between the two groups. Conclusions: Our relaxant-sparing approach did not increase the incidence of poor conditions of intubation nor laryngeal symptoms. However, excellent conditions occurred more frequently in the relaxant group. A more flexible approach to the issue of the need for neuromuscular blockade prior to intubation is proposed.
Recent advances in molecular scatology have allowed the development of reliable and non-invasive methods that can be applied in monitoring of small carnivores, without disturbance of the animals. Here a method is described that can be used to differentiate European mink Mustela lutreola, polecat M. putorius and American mink M. vison based on the analysis of DNA extracted from faeces. It consists of a nested PCR of a region of the mitochondrial D-loop followed by digestion of the resulting 240 bp amplicons with the restriction enzymes RsaI and MspI. The restriction patterns of both enzymes, when used together, are found to detect species-specific sequence variation. Two different haplotypes for European mink (AA, AB), another two for the polecat (AC, AD) and one for American mink (BC) can also be discriminated by this technique. Two new haplotypes for the mitocondrial D-loop of mustelids are described after DNA sequencing.
Besides being an indispensable amino acid for protein synthesis, arginine (Arg) is also involved in a number of other physiological functions. Available data on the quantitative requirement for Arg in different teleosts appear to show much variability. So far, there are very limited data on the maintenance requirements of indispensable amino acids (IAA) in fish. In the present study, we compared N and Arg requirements for maintenance and growth of four finfish species: rainbow trout (Oncorhynchus mykiss), turbot (Psetta maxima), gilthead seabream (Sparus aurata) and European seabass (Dicentrarchus labrax). Groups of fish having an initial body weight close to 5–7 g were fed semi-purified diets containing graded levels of N (0 to 8 % DM) and Arg (0 to 3 % DM) over 4 to 6 weeks. For each species, N and Arg requirements for maintenance and for growth were calculated regressing daily N gain against daily N or Arg intakes. N requirement for maintenance was estimated to be 37·8, 127·3, 84·7 and 45·1 mg/kg metabolic body weight per d and 2·3, 2·2, 2·6 and 2·5 g for 1 g N accretion, in rainbow trout, turbot, gilthead seabream and European seabass respectively. The four species studied appear to have very low or no dietary Arg requirements for maintenance. Arg requirement for g N accretion was calculated to be 0·86 g in rainbow trout and between 1·04–1·11 g in the three marine species. Turbot required more N for maintenance than the other three species, possibly explaining its reputedly high overall dietary protein requirement. Data suggest a small but sufficient endogenous Arg synthesis to maintain whole body N balance and differences between freshwater and marine species as regards Arg requirement. It is worth verifying this tendency with other IAA.