Publications by authors named "Tosato S"

Background: Multiple genetic and environmental risk factors play a role in the development of both schizophrenia-spectrum disorders and affective psychoses. How they act in combination is yet to be clarified.

Methods: We analyzed 573 first episode psychosis cases and 1005 controls, of European ancestry.

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Background: The association between cannabis and psychosis is established, but the role of underlying genetics is unclear. We used data from the EU-GEI case-control study and UK Biobank to examine the independent and combined effect of heavy cannabis use and schizophrenia polygenic risk score (PRS) on risk for psychosis.

Methods: Genome-wide association study summary statistics from the Psychiatric Genomics Consortium and the Genomic Psychiatry Cohort were used to calculate schizophrenia and cannabis use disorder (CUD) PRS for 1098 participants from the EU-GEI study and 143600 from the UK Biobank.

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Background: Cannabis use and familial vulnerability to psychosis have been associated with social cognition deficits. This study examined the potential relationship between cannabis use and cognitive biases underlying social cognition and functioning in patients with first episode psychosis (FEP), their siblings, and controls.

Methods: We analyzed a sample of 543 participants with FEP, 203 siblings, and 1168 controls from the EU-GEI study using a correlational design.

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Childhood adversity is associated with various clinical dimensions in psychosis; however, how genetic vulnerability shapes the adversity-associated psychopathological signature is yet to be studied. We studied data of 583 First Episode Psychosis (FEP) cases from the EU-GEI FEP case-control study, including Polygenic risk scores for major depressive disorder (MDD-PRS), bipolar disorder (BD-PRS) and schizophrenia (SZ-PRS); childhood adversity measured with the total score of the Childhood Trauma Questionnaire (CTQ); and positive, negative, depressive and manic psychopathological domains from a factor model of transdiagnostic dimensions. Genes and environment interactions were explored as a departure from a multiplicative effect of PRSs and total CTQ on each dimension.

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Article Synopsis
  • The study investigates how current cannabis use and high-potency cannabis affect DNA methylation patterns in individuals experiencing first-episode psychosis (FEP), comparing them to non-users.
  • Researchers analyzed blood samples from 682 participants, identifying a significant CpG site associated with cannabis use that could influence mental health through epigenetic changes.
  • Findings suggest cannabis use affects genes related to immune and mitochondrial functions, with implications for understanding how cannabis may impact mental health, especially in those with psychosis.
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Objective: The aim of the current study was to compare the clinical and treatment characteristics and dimensions of health-related quality of life between female and male patients with axial spondyloarthritis (SpA) and psoriatic arthritis (PsA).

Methods: The present study is cross-sectional and comprises 119 patients with axial SpA and 198 patients with PsA. Clinical data were collected by standardized and self-reported instruments.

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Background: We examined whether cannabis use contributes to the increased risk of psychotic disorder for non-western minorities in Europe.

Methods: We used data from the EU-GEI study (collected at sites in Spain, Italy, France, the United Kingdom, and the Netherlands) on 825 first-episode patients and 1026 controls. We estimated the odds ratio (OR) of psychotic disorder for several groups of migrants compared with the local reference population, without and with adjustment for measures of cannabis use.

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Aims of the present study were to prospectively assess psychosocial functioning trajectories during the COVID pandemic and the possible impact of sociodemographic variables, as well as of COVID-19 pandemic-related factors, on these trajectories, in a sample of patients with pre-existing severe mental disorders. Moreover, we aimed at identifying predictors of impairment in psychosocial functioning over a period of 9 months of COVID-19 pandemic. Patients were recruited during the 3rd wave of the COVID-19 pandemic (T0, March-April 2021) while strict containment measures were applied in Italy, and reassessed after 3 months (T1, June-July 2021), and after 6 months from T1 (T2- November-December 2021), during the 4th wave of COVID pandemic.

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The aim of this study was to prospectively assess the development and trajectories of anxiety and depressive symptoms among subjects with different mental disorders, during the 3rd wave of the COVID-19 pandemic (T0, March-April 2021) while strict containment measures were applied in Italy, and after 3 months (T1, June-July 2021), with reduced restrictive measures. A sample of 527 subjects, with different DSM-5 diagnoses, was enrolled at nine Italian psychiatric outpatient services. Assessments at T0 and T1 included the Generalized Anxiety Disorder 7-Item (GAD-7) for anxiety symptoms, and the Patient Health Questionnaire-9 (PHQ-9) for depressive symptoms.

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Objectives: Fatigue is a common comorbidity in patients with axial spondyloarthritis (axSpA), often reported also by those in clinical remission or with moderate disease activity. The aim of this study is to assess the prevalence of fatigue in patients with axSPA, and to investigate possible non-disease-related determinants, with a special focus on depression.

Methods: Patients with axSpA were assessed using the Chalder's Fatigue Questionnaire (CFQ) for fatigue, and the depression subscale of the Hospital Anxiety and Depression Scale (HADS-D) for depression.

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Article Synopsis
  • - The study investigates the variation of subclinical psychosis (SP) measures, such as schizotypy and psychotic-like experiences (PLEs), across different geographic regions and how this correlates with the incidence of first-episode psychosis (FEP) in those areas.
  • - Through analysis of data from 1497 controls in 16 sites across 6 countries, researchers found that schizotypy showed significant variation related to site characteristics, while PLEs exhibited less variation; local incidences of FEP were associated with reduced unexplained variance in schizotypy.
  • - Findings highlight that younger, migrant, unmarried, unemployed, and less educated individuals, along with factors like cannabis use and childhood adversity, are linked to SP
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  • Some people with schizophrenia and first-episode psychosis have low levels of vitamin D, but it's unclear if this is due to their illness or their lifestyle choices.
  • This study looked at how a genetic score related to vitamin D levels impacts the symptoms in people with first-episode psychosis.
  • The results showed that lower vitamin D may lead to less motivation and social interaction, suggesting that getting outside and being social could help improve symptoms for these individuals.
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Background: A better characterization of educational processes during psychiatry training is needed, both to foster personal resilience and occupational proficiency.

Methods: An adequate coverage of medical residents at the national level was reached (41.86% of the total reference population, 29 out of 36 training centers-80.

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Background: Childhood adversity and cannabis use are considered independent risk factors for psychosis, but whether different patterns of cannabis use may be acting as mediator between adversity and psychotic disorders has not yet been explored. The aim of this study is to examine whether cannabis use mediates the relationship between childhood adversity and psychosis.

Methods: Data were utilised on 881 first-episode psychosis patients and 1231 controls from the European network of national schizophrenia networks studying Gene-Environment Interactions (EU-GEI) study.

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Objectives: This study aimed to compare the health-related quality of life scores among rheumatoid arthritis, psoriatic arthritis, and spondyloarthritis and to evaluate socio-demographic and clinical determinantes of quality of life across diseases.

Methods: The sample comprised 490 patients with rheumatoid arthritis, 198 with psoriatic arthritis, and 119 with spondyloarthritis who completed a series of health examinations and self-reported questionnaires. Quality of life was evaluated using the Short-Form 36 Health Survey, disease activity by DAS28-CRP, DAPSA, and ASDAS-CRP (for rheumatoid arthritis, psoriatic arthritis, and spondyloarthritis, respectively), depression and anxiety using the Hospital Anxiety and Depression Scale.

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This study investigated if the association between childhood maltreatment and cognition among psychosis patients and community controls was partially accounted for by genetic liability for psychosis. Patients with first-episode psychosis (N = 755) and unaffected controls (N = 1219) from the EU-GEI study were assessed for childhood maltreatment, intelligence quotient (IQ), family history of psychosis (FH), and polygenic risk score for schizophrenia (SZ-PRS). Controlling for FH and SZ-PRS did not attenuate the association between childhood maltreatment and IQ in cases or controls.

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Background: A history of childhood adversity is associated with psychotic disorder, with an increase in risk according to the number of exposures. However, it is not known why only some exposed individuals go on to develop psychosis. One possibility is pre-existing polygenic vulnerability.

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Background: While cannabis use is a well-established risk factor for psychosis, little is known about any association between reasons for first using cannabis (RFUC) and later patterns of use and risk of psychosis.

Methods: We used data from 11 sites of the multicentre European Gene-Environment Interaction (EU-GEI) case-control study. 558 first-episode psychosis patients (FEPp) and 567 population controls who had used cannabis and reported their RFUC.

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Article Synopsis
  • Studies suggest that DNA-methylation (DNAm) may be influenced by childhood adversity (CA) and could play a role in the development of psychotic disorders, although the specific mediating effects remain unexplored.
  • Researchers conducted an epigenome-wide association study comparing first-episode psychosis patients (n=366) to healthy controls (n=517) using the Childhood Trauma Questionnaire to create adversity scores, but found that no specific CpG sites significantly mediated the relationship between CA and psychosis after statistical corrections.
  • While several genes showed differential methylation related to CA, and previous studies linked some of these genes to psychosis, the analysis did not identify conclusive biological pathways, hinting at potential factors such as mitochondrial
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Article Synopsis
  • - The study developed and validated a diagnostic model to quickly identify individuals at risk for first episode psychosis (FEP) by analyzing data from 2,627 participants across six countries.
  • - A binary logistic regression model was used, incorporating 22 predictor variables, and achieved high accuracy in distinguishing between individuals with FEP and controls, with specificity and sensitivity rates indicating strong overall performance.
  • - Despite showing some signs of overfitting in certain countries, the model demonstrated good discrimination and calibration, suggesting it could be broadly applicable in diverse ethnic settings.
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Serotonergic and dopaminergic systems are involved in the regulation of mood and reactivity to psychological stress. This study explores, in a sample of first episode psychosis (FEP) patients, whether more severe depressive symptoms were found in those who: (1) experienced a major stressful event in the 6 months preceding illness onset; and (2) were homozygous for the COMT Val158 allele or carrying the S allele of 5-HTTLPR. A total of 186 FEP patients recruited were assessed using the Hamilton Rating Scale for Depression (HAMD) for depressive symptoms.

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Identifying factors that influence problematic beliefs and behaviors related to pharmacotherapy may be useful for clinicians to improve the patients' adherence. The study aims to assess patients' beliefs about the necessity and concerns regarding pharmacotherapy in rheumatic diseases and attitude styles, and to investigate the association between clinical factors and negative beliefs about medication. A sample of 712 patients affected by Rheumatoid Arthritis, Psoriatic Arthritis, Ankylosing Spondylitis was enrolled.

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The potentially traumatic impact of the COVID-19 pandemic in subjects with pre-existing mental disorders is still unclear, especially regarding its long-term consequences. The aim of this study was to prospectively assess post-traumatic stress disorder (PTSD) and post-traumatic stress symptoms (PTSS) in patients with mental disorders, during the 3rd wave of the infection (T0, March-April 2021) while strict containment measures were applied in Italy, and after 3 months (T1, June-July 2021), with reduced restrictive measures. A total sample of 527 subjects, with different DSM-5 diagnoses, was consecutively enrolled at nine Italian psychiatric outpatient services.

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Background: Although it has been proposed that childhood adversities (CAs) may affect the hypothalamic-pituitary-adrenal (HPA) axis activity and psychotic symptoms severity, these associations have not been fully confirmed in first-episode psychosis (FEP). This study explored the association between CA, cortisol and psychotic symptoms in FEP patients.

Methods: 81 FEP patients were enrolled.

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