16 research outputs found

    Effects of initial-state dynamics on collective flow within a coupled transport and viscous hydrodynamic approach

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    We evaluate the effects of preequilibrium dynamics on observables in ultrarelativistic heavy-ion collisions. We simulate the initial nonequilibrium phase within A MultiPhase Transport (AMPT) model, while the subsequent near-equilibrium evolution is modeled using (2+1)-dimensional relativistic viscous hydrodynamics. We match the two stages of evolution carefully by calculating the full energy-momentum tensor from AMPT and using it as input for the hydrodynamic evolution. We find that when the preequilibrium evolution is taken into account, final-state observables are insensitive to the switching time from AMPT to hydrodynamics. Unlike some earlier treatments of preequilibrium dynamics, we do not find the initial shear viscous tensor to be large. With a shear viscosity to entropy density ratio of 0.120.12, our model describes quantitatively a large set of experimental data on Pb+Pb collisions at the Large Hadron Collider(LHC) over a wide range of centrality: differential anisotropic flow vn(pT) (n=2−6)v_n(p_T) ~(n=2-6), event-plane correlations, correlation between v2v_2 and v3v_3, and cumulant ratio v2{4}/v2{2}v_2\{4\}/v_2\{2\}.Comment: 10 pages, v2: minor revisio

    Landscape of Druggable Molecular Pathways Downstream of Genomic CDH1/Cadherin-1 Alterations in Gastric Cancer

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    Loss of CDH1/Cadherin-1 is a common step towards the acquisition of an abnormal epithelial phenotype. In gastric cancer (GC), mutation and/or downregulation of CDH1/Cadherin-1 is recurrent in sporadic and hereditary diffuse GC type. To approach the molecular events downstream of CDH1/Cadherin-1 alterations and their relevance in gastric carcinogenesis, we queried public databases for genetic and DNA methylation data in search of molecular signatures with a still-uncertain role in the pathological mechanism of GC. In all GC subtypes, modulated genes correlating with CDH1/Cadherin-1 aberrations are associated with stem cell and epithelial-to-mesenchymal transition pathways. A higher level of genes upregulated in CDH1-mutated GC cases is associated with reduced overall survival. In the diffuse GC (DGC) subtype, genes downregulated in CDH1-mutated compared to cases with wild type CDH1/Cadherin-1 resulted in being strongly intertwined with the DREAM complex. The inverse correlation between hypermethylated CpGs and CDH1/Cadherin-1 transcription in diverse subtypes implies a common epigenetic program. We identified nonredundant protein-encoding isoforms of 22 genes among those differentially expressed in GC compared to normal stomach. These unique proteins represent potential agents involved in cell transformation and candidate therapeutic targets. Meanwhile, drug-induced and CDH1/Cadherin-1 mutation-related gene expression comparison predicts FIT, GR-127935 hydrochloride, amiodarone hydrochloride in GC and BRD-K55722623, BRD-K13169950, and AY 9944 in DGC as the most effective treatments, providing cues for the design of combined pharmacological treatments. By integrating genetic and epigenetic aspects with their expected functional outcome, we unveiled promising targets for combinatorial pharmacological treatments of GC

    Temperament, Post-Partum Depression, Hopelessness, and Suicide Risk Among Women Soon After Delivering

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    The aim of the authors in this study was to assess the prevalence of postpartum depression and evaluate the association of affective temperaments with emotional disorders in a sample of 92 pregnant women consecutively admitted for delivery between March and December 2009. In the first few days postpartum, women completed the Suicidal History Self-rating Screening Scale, the Beck Hopelessness Scale, the Edinburgh Postnatal Depression Scale, the Temperament Evaluation of the Memphis, Pisa, Paris and San Diego Autoquestionnaire, and the Gotland Male Depression Scale. Fifty percent of the women reported an Edinburgh Postnatal Depression Scale score of 9 or higher, and 23% a score of 13 or higher. Women with a dysphoric-dysregulated temperament had higher mean scores on the Beck Hopelessness Scale (p < 0.05), the Gotland Male Depression Scale (p < 0.001), the Edinburgh Postnatal Depression Scale (p < 0.001), and the Suicidal History Self-Rating Screening Scale (p < 0.01) than other women after adjusting for covariates. Multiple logistic regression analysis with the temperament groups as the dependent variable indicated that only the Gotland Male Depression Scale was significantly associated with temperament when controlling for the presence of other variables. Women with a dysphoric-dysregulated temperament were 1.23 times as likely to have higher depressive symptom scores. Future studies should evaluate the effectiveness of psychiatric screening programs in the postpartum period as well as factors associated with depression and suicidality during the same period

    The impact of Covid-19 on unemployment across Italy: Consequences for those affected by psychiatric conditions

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    Background: Severe psychological and psychosocial consequences of the COVID-19 pandemic are expected, especially for people already vulnerable to biological or psychosocial stressors, including those with mental health problems. The study aimed to investigate factors associated with the loss of jobs and unemployment during the COVID-19 pandemic. In particular, we investigated whether mental illness was associated with a higher risk of losing one's job because of the COVID-19 pandemic. Methods: Nineteen thousand four hundred ninety-six adults living in Italy were administered an online protocol including a sociodemographic checklist and questionnaires investigating suicide ideation and risk, mental health status and general distress (stress, anxiety, and depression), resilience, and perceived support. Results: One thousand two hundred seventy-four reported having lost their job because of the COVID-19 pandemic, and 5.4% of the sample reported a mental illness (mostly a depressive disorder). Unemployment was independently associated with mental illness, poor mental health, and depression. Mental illness was associated with the risk of losing one's job because of the COVID-19 pandemic, but not at the multivariate analyses. Those who lost their job because of the COVID-19 pandemic (compared to others) reported worse mental health and depression. Limitations: The presence of mental illness was self-reported by respondents and the administered measures were self-reported questionnaires affected by social desirability and other response bias. Conclusions: The COVID-19 pandemic and social isolation measures and lockdown used to contain its spread among the Italian population were associated with occupational insecurity, especially among the more vulnerable social categories

    Psychiatric comorbidity and suicidal ideation in psoriasis, melanoma and allergic disorders

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    Objective: Psychiatric disorders and suicide risk (especially in psoriasis) are frequent and disabling conditions in patients with skin diseases. The aim of this study was to examine the risk of suicide and stressful life events in a sample of patients with skin disease. Methods: A sample of 242 dermatological patients (142 women and 100 men), 112 of which had psoriasis, 77 had melanoma, and 53 were suffering with chronic allergic diseases. Patients were administered the MINI International Neuropsychiatric Interview (MINI), Hamilton Depression Rating Scale (HDRS), Hamilton Anxiety Rating Scale (HARS), and the Columbia-Suicide Severity Rating Scale (C-SSRS). Patients were also asked about their experiences with stressful life events. Results: Patients with psoriasis were more likely to have a history of psychiatric disorders (36.6% vs. 13.2% \u3c72(1)\u2009=\u20099.55; p\u2009=\u20090.002) compared to patients with allergies. Specifically, patients with psoriasis more likely had a diagnosis of a mood disorder (16.1% vs. 3.9% \u3c72(1)\u2009=\u20096.85; p\u2009=\u20090.009; 16.1% vs. 0% \u3c72(1)\u2009=\u20099.56; p\u2009=\u20090.002) and reported past suicidal ideation (33.9% vs. 15.6% \u3c72(1)\u2009=\u20097.89; p\u2009=\u20090.005; 33.9% vs. 18.9% \u3c72(1)\u2009=\u20093.96; p\u2009=\u20090.047) as compared to those with melanoma and allergy. Conclusions: The results from this study suggest that patients affected by psoriasis have an increased risk of psychiatric comorbidities and suicidal ideation compared to those who have other dermatological disorders

    Temperament in suicidal and non-suicidal psychiatric inpatients

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    Suicide is a serious public health problem. In the international literature there is evidence to support the notion that certain temperaments and personality traits are often associated with suicidal behavior. In this study, 150 psychiatric inpatients were investigated using the TEMPS-A, the MMPI-2 and the Beck Hopelessness Scale (BHS) and evaluated for suicide risk through the critical items of the Mini International Neuropsychiatric Interview (MINI). Statistical analysis, including linear regression analysis and multiple regression analysis, showed that suicide risk contributed to the prediction of hopelessness. Among the temperaments, only the Hyperthymic temperament, as a protective factor, and the Dys/Cyc/Anx temperament contributed significantly to the prediction of hopelessness. Irritable temperament and Social Introversion were protective factors for suicidal risk. Hopelessness and depression were associated with higher suicidal behavior and ideation, but, unexpectedly, depression as measured by the MMPI did not contribute significant to the multiple regression. The present study indicated that, although suicidal psychiatric patients have MMPI-2’s profiles in the pathologic range, they exhibit several differences from nonsuicidal patients. Patients at risk of suicide have specific temperaments as well as personality and defense mechanism profiles. They are more social introverted, depressed and psychasthenic, and use hysterical and schizoid mechanisms more often. Generalizability of the findings was limited by the small sample size, mix of BPD-I, BPD-II, MDD and psychotic disorder patients

    The Relationship Between Mental Pain, Suicide Risk, and Childhood Traumatic Experiences: Results From a Multicenter Study

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    : : Objective: Mental pain and exposure to maltreatment are significant risk factors for suicidal behavior. This study aimed to investigate whether mental pain could be associated with a recent suicide attempt and whether it could mediate the relationship between childhood traumatic experiences and suicide risk in psychiatric patients. : Methods: A multicenter observational study was organized as a joint project with representatives of numerous mixed Italian academic and clinical settings. Between December 2017 and March 2020, batteries of tests were administered to patients, assessing suicidal ideation and behavior, mental pain (usual and worst mental pain in the past 15 days), depression, and childhood maltreatment. : Results: A total of 2,137 psychiatric patients (1,313 women and 824 men) were included in the final sample, and 315 reported having attempted suicide in the last 3 months. Suicide attempters (compared to nonattempters) had higher odds of reporting worse mental pain (odds ratios [ORs] between 1.02 and 1.17; P &lt; .001) and suicidal intent with/without a specific plan (ORs between 11.57 and 11.77; P &lt; .001). They also had higher odds of having a personality disorder (borderline personality disorder: ORs between 2.65 and 3.01; P &lt; .001; other personality disorders: ORs between 1.96 and 2.28; P &lt; .01) and major depression (ORs between 1.62 and 1.70; P &lt; .05). Childhood trauma was associated with suicide risk directly (standardized effects between 0.06 and 0.07; P &lt; .01) and indirectly through mental pain (usual mental pain: standardized indirect effect = 0.11, P &lt; .001; worst mental pain in the past 15 days: standardized indirect effect = 0.12, P &lt; .001). : Conclusions: Mental pain constitutes a crucial framework for assessing the individual need for psychiatric help. Assessing mental pain allows identification of the main ingredient of suicide risk and puts the clinician in a strategic position to unlock some motives behind the wish to die. Further research is needed to learn if childhood adversities may interact with adult mental pain and thus foster suicide risk
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