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The macro-social and environmental conditions in which people live, such as the level of a country’s development or inequality, are associated with brain-related disorders. However, the relationship between these systemic environmental factors and the brain remains unclear. We aimed to determine the association between the level of development and inequality of a country and the brain structure of healthy adults.
Methods
We conducted a cross-sectional study pooling brain imaging (T1-based) data from 145 magnetic resonance imaging (MRI) studies in 7,962 healthy adults (4,110 women) in 29 different countries. We used a meta-regression approach to relate the brain structure to the country’s level of development and inequality.
Results
Higher human development was consistently associated with larger hippocampi and more expanded global cortical surface area, particularly in frontal areas. Increased inequality was most consistently associated with smaller hippocampal volume and thinner cortical thickness across the brain.
Conclusions
Our results suggest that the macro-economic conditions of a country are reflected in its inhabitants’ brains and may explain the different incidence of brain disorders across the world. The observed variability of brain structure in health across countries should be considered when developing tools in the field of personalized or precision medicine that are intended to be used across the world.
The acoustic field radiated by a system of contra-rotating propellers in wetted conditions (with no cavitation) is reconstructed by exploiting the Ffowcs Williams–Hawkings acoustic analogy and a database of instantaneous realizations of the flow. They were generated by high-fidelity computations using a large eddy simulation approach on a cylindrical grid of 4.6 billion points. Results are also compared against the cases of the front and rear propellers working alone. The analysis shows that the importance of the quadrupole component of sound, originating from wake turbulence and instability of the tip vortices, is reinforced, relative to the linear component radiated from the surface of the propeller blades. The sound from the contra-rotating propellers decays at a slower rate for increasing radial distances, compared with the cases of the isolated front and rear propellers, again due to the quadrupole component. The quadrupole sound is often neglected in the analysis of the acoustic signature of marine propellers, by considering the only linear component. In contrast, the results of this study point out that the quadrupole component becomes the leading one in the case of contra-rotating propulsion systems, due to the increased complexity of their wake. This is especially the result of the mutual inductance phenomena between the tip vortices shed by the front and rear propellers of the contra-rotating system.
Previous studies identified clusters of first-episode psychosis (FEP) patients based on cognition and premorbid adjustment. This study examined a range of socio-environmental risk factors associated with clusters of FEP, aiming a) to compare clusters of FEP and community controls using the Maudsley Environmental Risk Score for psychosis (ERS), a weighted sum of the following risks: paternal age, childhood adversities, cannabis use, and ethnic minority membership; b) to explore the putative differences in specific environmental risk factors in distinguishing within patient clusters and from controls.
Methods
A univariable general linear model (GLS) compared the ERS between 1,263 community controls and clusters derived from 802 FEP patients, namely, low (n = 223) and high-cognitive-functioning (n = 205), intermediate (n = 224) and deteriorating (n = 150), from the EU-GEI study. A multivariable GLS compared clusters and controls by different exposures included in the ERS.
Results
The ERS was higher in all clusters compared to controls, mostly in the deteriorating (β=2.8, 95% CI 2.3 3.4, η2 = 0.049) and the low-cognitive-functioning cluster (β=2.4, 95% CI 1.9 2.8, η2 = 0.049) and distinguished them from the cluster with high-cognitive-functioning. The deteriorating cluster had higher cannabis exposure (meandifference = 0.48, 95% CI 0.49 0.91) than the intermediate having identical IQ, and more people from an ethnic minority (meandifference = 0.77, 95% CI 0.24 1.29) compared to the high-cognitive-functioning cluster.
Conclusions
High exposure to environmental risk factors might result in cognitive impairment and lower-than-expected functioning in individuals at the onset of psychosis. Some patients’ trajectories involved risk factors that could be modified by tailored interventions.
Deficits in social cognition (SC) are significantly related to community functioning in schizophrenia (SZ). Few studies investigated longitudinal changes in SC and its impact on recovery. In the present study, we aimed: (a) to estimate the magnitude and clinical significance of SC change in outpatients with stable SZ who were assessed at baseline and after 4 years, (b) to identify predictors of reliable and clinically significant change (RCSC), and (c) to determine whether changes in SC over 4 years predicted patient recovery at follow-up.
Methods
The reliable change index was used to estimate the proportion of true change in SC, not attributable to measurement error. Stepwise multiple logistic regression models were used to identify the predictors of RCSC in a SC domain (The Awareness of Social Inference Test [TASIT]) and the effect of change in TASIT on recovery at follow-up.
Results
In 548 participants, statistically significant improvements were found for the simple and paradoxical sarcasm of TASIT scale, and for the total score of section 2. The reliable change index was 9.8. A cut-off of 45 identified patients showing clinically significant change. Reliable change was achieved by 12.6% and RCSC by 8% of participants. Lower baseline TASIT sect. 2 score predicted reliable improvement on TASIT sect. 2. Improvement in TASIT sect. 2 scores predicted functional recovery, with a 10-point change predicting 40% increase in the probability of recovery.
Conclusions
The RCSC index provides a conservative way to assess the improvement in the ability to grasp sarcasm in SZ, and is associated with recovery.
Resilience is defined as the ability to modify thoughts to cope with stressful events. Patients with schizophrenia (SCZ) having higher resilience (HR) levels show less severe symptoms and better real-life functioning. However, the clinical factors contributing to determine resilience levels in patients remain unclear. Thus, based on psychological, historical, clinical and environmental variables, we built a supervised machine learning algorithm to classify patients with HR or lower resilience (LR).
Methods
SCZ from the Italian Network for Research on Psychoses (N = 598 in the Discovery sample, N = 298 in the Validation sample) underwent historical, clinical, psychological, environmental and resilience assessments. A Support Vector Machine algorithm (based on 85 variables extracted from the above-mentioned assessments) was built in the Discovery sample, and replicated in the Validation sample, to classify between HR and LR patients, within a nested, Leave-Site-Out Cross-Validation framework. We then investigated whether algorithm decision scores were associated with the cognitive and clinical characteristics of patients.
Results
The algorithm classified patients as HR or LR with a Balanced Accuracy of 74.5% (p < 0.0001) in the Discovery sample, and 80.2% in the Validation sample. Higher self-esteem, larger social network and use of adaptive coping strategies were the variables most frequently chosen by the algorithm to generate decisions. Correlations between algorithm decision scores, socio-cognitive abilities, and symptom severity were significant (pFDR < 0.05).
Conclusions
We identified an accurate, meaningful and generalizable clinical-psychological signature associated with resilience in SCZ. This study delivers relevant information regarding psychological and clinical factors that non-pharmacological interventions could target in schizophrenia.
Permanent pacing in children with isolated congenital complete atrioventricular block may cause left ventricular dysfunction. To prevent it, alternative pacing sites have been proposed: left ventricular epicardial or selective right ventricular endocardial pacing.
Aims:
To compare the functional outcome (left ventricular systolic function and synchrony) in paediatric patients with congenital complete atrioventricular block and left ventricular apical epicardial or right ventricular transvenous mid-septal pacing.
Methods:
Retrospective study. Epicardial leads were implanted by standard surgical technique, transvenous leads by 3D electroanatomic mapping systems. 3D mapping acquired 3D right ventricular local pacing map and defined the narrowest paced QRS site. 3D mapping guided screw-in bipolar leads on that ventricular site. Electrocardiogram (ECG) (QRS duration) and echocardiographic data (synchrony: interventricular mechanical delay, septal to posterior wall motion delay, systolic dyssynchrony index; contractility: global longitudinal strain, ejection fraction) were recorded. Data are reported as median [interquartile ranges]. p < 0.05 was significant.
Results:
There were 19 transvenous systems (age 8.8 [6–14] years; right ventricular mid-septum) and 17 epicardial systems (0.04 [0.001–0.6] years; left ventricular apex). Post-implantation QRS significantly widened either in endocardial or in epicardial patients. Most patients reached 4-year follow-up. One-year and 4-year ejection fraction and global longitudinal strain were mostly within normal limits and did not show significant differences between the two groups and between the same endocardial/epicardial group. Synchrony parameters were within normal limits in the two groups.
Conclusions:
Left ventricular apical epicardial pacing and 3D mapping-guided right ventricular mid-septal pacing preserved left ventricular contractility and synchrony in children and adolescents with congenital complete atrioventricular block at short-/mid-term follow-up, without relevant significant differences between the two groups.
22q11.2 Deletion Syndrome (22q11.2DS) represents a congenital syndrome with several clinical features. It entails a 25% risk of psychotic onset in lifespan. 22q11.2DS is a reliable model for biological vulnerability to schizophrenia.
Objectives
With the hypothesis of similar impairments in schizophrenia and 22q11DS, to investigate a possible correlation between Social Cognition (SC) and Interpersonal Functioning (FU).
Methods
Sample consists of 1735 adults: 893 schizophrenic subjects (SCZ); 18 with 22q11.2DS and psychosis (DEL_SCZ); 44 22q11.2DS individuals (DEL); 780 healthy controls (HC). SCZ and HC data come from a multicentric study by Network for Research on Psychoses. SC was assessed with The Awareness of Social Interference Test (TASIT, consisting of three sections: T1= Emotion Recognition; T2=Minimal Social Inference; T3=Social Inference Enriched). The Specific Levels of Functioning (SLOF) interview was employed.
Results
DEL_SCZ (p<0.001) and SCZ (p<0.001) showed impairments in each TASIT sections compared to HC. Significant deficits in interpersonal functioning area were found in SCZ (p<0.001) compared to HC. The interpersonal functioning domain showed a positive correlation with SC in HC (T1: r=0.097; p<0.001; T2: r=0.120; p=0.001; T3: r=0.121; p=0.001); DEL (T1: r=0.380; p=0.024; T2: r=0.466; p=0.005) and SCZ (T1: r=0.113, p=0.001; T2: r=0.110, p=0.001; T3: r=0.134; p<0.001).
Conclusions
SC deficits both in subjects with 22q11.2DS and in people with schizophrenia suggest a role of endophenotypes. SC is directly correlated to interpersonal functioning in 22q11.2DS without psychosis and people with schizophrenia. DEL_SCZ may suffer from deeper cognitive and symptomatic conditions that both impact differently on FU.
An unprecedented wave of patients with acute respiratory failure due to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) disease 2019 (COVID-19) hit emergency departments (EDs) in Lombardy, starting in the second half of February 2020. This study describes the direct and indirect impacts of the SARS-CoV-2 outbreak on an urban major-hospital ED.
Methods:
Data regarding all patients diagnosed with COVID-19 presenting from February 1 to March 31, 2020, were prospectively collected, while data regarding non-COVID patients presenting within the same period in 2019 were retrospectively retrieved.
Results:
ED attendance dropped by 37% in 2020. Two-thirds of this reduction occurred early after the identification of the first autochthonous COVID-19 case in Lombardy, before lockdown measures were enforced. Hospital admissions of non-COVID patients fell by 26%. During the peak of COVID-19 attendance, the ED faced an extraordinary increase in: patients needing oxygen (+239%) or noninvasive ventilation (+725%), transfers to the intensive care unit (+57%), and in-hospital mortality (+309%), compared with the same period in 2019.
Conclusions:
The COVID-19 outbreak determined an unprecedented upsurge in respiratory failure cases and mortality. Fear of contagion triggered a spontaneous, marked reduction of ED attendance, and, presumably, some as yet unknown quantity of missed or delayed diagnoses for conditions other than COVID-19.
The ‘jumping to conclusions’ (JTC) bias is associated with both psychosis and general cognition but their relationship is unclear. In this study, we set out to clarify the relationship between the JTC bias, IQ, psychosis and polygenic liability to schizophrenia and IQ.
Methods
A total of 817 first episode psychosis patients and 1294 population-based controls completed assessments of general intelligence (IQ), and JTC, and provided blood or saliva samples from which we extracted DNA and computed polygenic risk scores for IQ and schizophrenia.
Results
The estimated proportion of the total effect of case/control differences on JTC mediated by IQ was 79%. Schizophrenia polygenic risk score was non-significantly associated with a higher number of beads drawn (B = 0.47, 95% CI −0.21 to 1.16, p = 0.17); whereas IQ PRS (B = 0.51, 95% CI 0.25–0.76, p < 0.001) significantly predicted the number of beads drawn, and was thus associated with reduced JTC bias. The JTC was more strongly associated with the higher level of psychotic-like experiences (PLEs) in controls, including after controlling for IQ (B = −1.7, 95% CI −2.8 to −0.5, p = 0.006), but did not relate to delusions in patients.
Conclusions
Our findings suggest that the JTC reasoning bias in psychosis might not be a specific cognitive deficit but rather a manifestation or consequence, of general cognitive impairment. Whereas, in the general population, the JTC bias is related to PLEs, independent of IQ. The work has the potential to inform interventions targeting cognitive biases in early psychosis.
The 22q11.2 deletion syndrome is a neurogenetic disorder resulting from a hemizygous deletion. Individuals with 22q11DS present with a wide range of clinical manifestations; an increased risk of behavioral and neurocognitive sequelae throughout development have been reported. Approximately 30% of individuals develops a psychotic disorder in adolescence or early adulthood, making this syndrome one of the largest known genetic risk factors for schizophrenia.
The aim of this study is to evaluate some psychophysiological aspects in patients with DiGeorge syndrome in the attempt to recognize earlier specific features able to provide pre-clinic evidence predictive of a possible evolution towards schizophrenia.
Eight subjects with 22q11DS (median age 28,6-29,8±2,3ys), eight psychotic patients and eight matched healthy controls underwent a psychophysiological assessment. CNV and P300 (oddball and Novel paradigm) were recorded. CNV amplitude (total area and two temporal windows, W1 and W2), and P3 parameters were measured.
A total CNV area decrease was found in 22q11DS with respect to psychotic and healthy controls (p=0.04 and p=0.07 respectively). A slight difference was evident at W1 in 22q11DS patients and psychotics vs controls. A N1 latency reduction was observed in 22q11DS patients during Novelty P3 paradigm (p=0.03). Psychophysiological changes in CNV and P3 latency and amplitude have been repeatedly found in schizophrenic patients and interpreted as a deficit in attentional processes.
Data related to our DiGeorge subjects suggest a possible frontal involvement of attentional processes in absence of a psychiatric symptoms. A follow-up study could confirm a predictive role of these ERPs findings in this syndrome
Schizotypy and Cluster A personality profiles are more represented in first-degree relatives of patients with schizophrenia than in the general population. This study presents two diagnostic instruments for the assessment of cluster A personality profiles: the Structured Clinical Interview for personality disorders Axis II (SCID-II) and the Shedler-Westen Assessment Procedure (SWAP 200).
Objectives
1) Verify sensitivity of SCID-II and SWAP-200 to detect schizophrenia spectrum personality traits;
2) Assess the prevalence of the traits and personality disorders (PD) related to cluster A.
Aim
Evaluate diagnostic sensitivity of these instruments in detecting schizotypy and cluster A personality profiles, that are ultra high risk predictors for psychosis.
Methods
25 schizophrenic patients(SchzP), 18 their first-degree relatives(FdR), 23 healthy-control(HC) subjects, have been subjected to personality assessment. MANOVA and subsequent planned comparisons were assessed to detect difference between PD profiles in the three groups.
Results
SchzP present significant scores relative to cluster A in both evaluations. FdR show statistically significant differences compared with HC, with higher mean scores relative to cluster A profiles measured with SWAP-200 [PD: Paranoid F(1,63)=7.02;p=0.01. Schizoid F(1,63)=6.56;p=0.013. Schizotypy F(1,63)=6.1;p=0.016; Q-Factor: Schizoid (F(1,63)=6.47;p=0.013; Paranoid F(1,63)=2.11;p=0.151], but not with SCID-II.
Conclusions
Data suggest low sensitivity of SCID-II to identify traits related to cluster A. FdR scored for traits related to schizophrenia spectrum greater than in the general population. SWAP-200 is able to accurately evidentiate the presence of schizotypal traits in FdR of patients with schizophrenia and suggests the importance of a clinical dimensional diagnosis for a more reliable identification of schizophrenia spectrum.
Data show impairment in Social Cognition (SC) in schizophrenia underlining also the diagnostic importance of neuroimaging in this area. So, it seems important to identify possible correlations between SC and structural brain abnormalities.
Objectives
1)Evaluate differences in emotional recognition between schizophrenics and healthy controls and the structural characteristics of the anterior left and right thalamic radiation (TR) of both groups. 2)Identify possible association between sociocognitive abilities and structural characteristics of the thalamic radiation.
Aims
Investigate the relationship between anomalies in integrity and fiber orientation of anterior TR and sociocognitive performance in schizophrenia.
Methods
27 Schizophrenics (SCID-I), age-matched with 11 healthy controls, were evaluated with The awareness of Social Inference Test (TASIT) to assess emotion and conversation literally and non-literally remarks recognition. DTI images –with measure of fractional anisotropy (FA) of TR– were collected using 3T-MRI scanner. Mixed-design ANOVA was performed on right and left FA. MANOVA was performed on TASIT.
Results
Deficits in recognition of positive and negative emotions, perceive sarcasm, distinguish between truth and lies were observed. Moreover, significant negative correlations between FA of left TR and scores in “Positive Emotions” (r=-466,p=.019), “Total Emotions” (r=-411,p=.041), “Lie” (r=-451,p=.024) and a negative significant correlation between FA right TR and scores “sincerity” (r=-522,p=.009), were observed.
Conclusions
These preliminary results confirm that SC is impaired in schizophrenia and show that increased FA of left and right TR correlates with lower TASIT scores. These results highlight the role of TR in emotion regulation suggesting that structural anomalies could result in worse sociocognitive performance.
Most of the photochemical activity of bacterial photosynthetic apparatuses occurs in the reaction center, a transmembrane protein complex which converts photons into charge-separated states across the membrane with a quantum yield close to unity, fuelling the metabolism of the organism. Integrating the reaction center from the bacterium Rhodobacter sphaeroides onto electroactive surfaces, it is possible to technologically exploit the efficiency of this natural machinery to generate a photovoltage upon Near Infra-Red illumination, which can be used in electronic architectures working in the electrolytic environment such as electrolyte-gated organic transistors and bio-photonic power cells. Here, photovoltage generation in reaction center-based bio-hybrid architectures is investigated by means of chronopotentiometry, isolating the contribution of the functionalisation layers and defining novel surface functionalization strategies for photovoltage tuning.
The (still) United Kingdom has voted against remaining in the EU. The divide between London City and the countryside, between young and old, between Scotland and Wales –all of this will keep this nation occupied for a long time, if it does not tear the nation apart. At the very least it will be a nation under significant tension. But what about the Continent? Recently a truculent suggestion has been making the rounds in Brussels, Paris and Berlin. In principle it would be a good thing if the English leave. This would clear the way for “more Europe.” Maybe, with a divorce, Europe will at last be free to take step toward a federal state. Some, a bit more tactfully, wonder if Brexit should not have consequences for the EU as well. Should the EU become more “social” with decidedly more transfers? Or, should competences now be returned to the Member States? Others, to the contrary, have floated the idea of a new subsidiary balance: they want to transfer additional sovereign authority and reduce the veto-opportunities for the Member States.
In this exclusive interview with Federal Constitutional Court Justice, Professor Udo Di Fabio, GLJ looks forward to some of the challenges the Court will face in next fifty years, especially the meaning for the Court of domestic (privatization) and international (europeanization) changes to the role of the nation state. The interview begins with an exploration of the nature and role of the Federal Constitutional Court in light of radical changes in the law as well as the social sciences. Justice Di Fabio also addresses the Court's narrow role as an interpreter of legal texts, noting that the Court performs this function while also exercising broader, quasi-legislative authority within a pluralistic and post-traditional society. The interview then turns to questions related to the role of the state and the traditional public structuring of societal authority as set against the general turn to societal self-structuring, especially in the context of the debate over the nature of the European Union's authority.
The debate over a European constitution is fully underway. (1) The issue will play an important role at the 2004 intergovernmental conference, especially if negotiations over a new model for the division of competencies between the Union and its constituent Member States is taken up at the Conference. The various points of inquiry — a Charter of Fundamental Rights, institutional reform, the division of competencies, financing, eastward expansion, finality — belong together and they beg for a solution that is fully conceptualized. With this in mind, the German Federal Government is justified in making sweeping, well thought out proposals. At the same time, the French government is equally correct to promote practical solutions while expressing a healthy suspicion of the formation of a federal state of Europe, which is the holiest of all possibilities for the Germans. Against this background, let me begin by saying a few things with respect to the legal nature of a possible constitution for the EU, before I move on to a presentation of more practical conclusions. II.
The European Union takes on a new look. The Constitutional Treaty, which was agreed by the heads of State or Government on 18 June 2004, will, admittedly, not reinvent Europe, but it will establish a new foundation for Europe. It is true that originally the Constitutional Treaty was only supposed to improve Europe's legal bases and to make the European idea and the institutions of the European Union more accessible to the citizens. However, through the concept of a Constitution alone, the Constitutional Treaty has created a vigorous political impulse, and has marked a new level of Europe's identity. The use of the term “Constitution,” however, also gives rise to ideas, hopes and fears that in some cases need to be corrected.
On 7 February 2014 in the OMT Case, the German Constitutional Court in Karlsruhe referred a question about the interpretation of Treaty law to the European Court of Justice for the first time. The question was whether the European Central Bank exceeded its mandate when it declared, in September 2012, that it was prepared to make emergency, unlimited purchases of specific states' bonds. Some view the referral as a genuflection acknowledging the judicial superiority of European Union jurisprudence. Has the Karlsruhe Court relinquished its role as “the final arbiter” and thereby surreptitiously bid farewell to the German sovereignty that the same Senate of the Constitutional Court so vigorously endorsed in the Lisbon Treaty Case in 2009?
The distribution of funerary stone structures in the Saharan landscape has been a subject of interest for the Italian-Libyan Archaeological Mission in the Tadrart Akakus and Massak since the early ’90sThis archaeological evidence gave witness to an enduring human settlement, lasting at least from the Pastoral period to Proto-historical times, and played an important role in the definition of the cultural identities of the local groups,while representing a source of information about population features and dynamics.In the twentieth century, only a few excavations were carried out in cemeteries located in Fazzan. In 1997, as part of an interdisciplinary project focused on Holocene environment and human settlement until the rise of the Garamantian civilisation, our mission started a systematic survey and excavation of funerary structures in the Wadi Tanzzuft. The 2004–06 investigation of Fewet necropolis needs to be viewed in this framework.
This paper aims to evaluate the impact of Italy's unification on its economic growth from 1861 to the outbreak of World War II. This historical analysis attempts to prove that the process of legislative harmonization intrinsic to the unification had a positive effect on Italy's GDP because legislative uniformity facilitates economic transactions. Moreover a uniform and more effective legislation would have caused less litigation and therefore favoured economic growth, thanks to smoother relations between economic agents.