Genetics of suicide ideation. A role for inflammation and neuroplasticity?

Suicide is a leading cause of death worldwide. Suicide ideation (SI) is a known risk factor for suicide behaviour (SB). The current psychobiology and genetic predisposition to SI and SB are poorly defined. Despite convincing relevance of a genetic background for SI, there is no current implementable knowledge about the genetic makeup that identifies subjects at risk for it. One of the possible reasons for the absence of a clear-cut evidence is the polygenetic nature of SI along with the very large sample sizes that are needed to observe significant genetic association result. The CATIE sample was instrumental to the analysis. SI was retrieved as measured by the Calgary test. Clinical possible covariates were identified by a nested regression model. A principal component analysis helped in defining the possible genetic stratification factors. A GWAS analysis, polygenic risk score associated with a random forest analysis and a molecular pathway analysis were undertaken to identify the genetic contribution to SI. As a result, 741 Schizophrenic individuals from the CATIE were available for the genetic analysis, including 166,325 SNPs after quality control and pruning. No GWAS significant result was found. The random forest analysis conducted by combining the polygenic risk score and several clinical variables resulted in a possibly overfitting model (OOB error rate < 1%). The molecular pathway analysis revealed several molecular pathways possibly involved in SI, of which those involved in microglia functioning were of particular interest. A medium-small sample of SKZ individuals was analyzed to shed a light on the genetic of SI. As an expected result from the underpowered sample, no GWAS positive result was retrieved, but the molecular pathway analysis indicated a possible role of microglia and neurodevelopment in SI.

The Role of Hyperarousal and Aberrant Salience in the Acceptance of Anti-COVID-19 Vaccination.

Background and Objectives: This present study was aimed at exploring hyperarousal and aberrant salience in a sample of the Italian general population to understand their possible role in the acceptance of anti-COVID-19 vaccination. Materials and Methods: Sociodemographic data questions, the "Acceptance of Vaccination" measure, the Hyperarousal Scale (H-Scale), and the Aberrant Salience Inventory (ASI) were sent as an unpaid online survey to the general population (age range 18-80 years) within the Italian territory. Results: The enrolled subjects were divided into two subgroups: "Pro-vax" (n = 806; 87.4%) and "No-vax" (n = 116; 12.6%). Statistical analysis showed significant differences between groups in the "Education Level" (p = 0.001) category, higher in the "Pro-vax" group, and in the ASI "Senses Sharpening" (p = 0.007), "Heightened Emotionality" (p = 0.008), and "Heightened Cognition" (p = 0.002) subscales with the "Total Score" (p = 0.015), all higher in "No-vax" subjects. Furthermore, a linear regression model evidenced that only "Education Level" (ß = 0.143; p < 0.0001) and "Senses Sharpening" (ß = -0.150; p = 0.006) were, respectively, direct and inverse predictors of "Acceptance of Vaccination". Conclusions: Our results show that several subthreshold conditions, such as somatosensory amplification, anxiety traits, and panic experiences, should be taken into account by authoritative sources involved in health education, communication, and policy to alleviate public concerns about vaccine safety, for the present and also future pandemics, and to provide more inclusive, informed, and accurate public health preventive and treatment programs.

Cognitive and Mood Effect of Alpha-Lipoic Acid Supplementation in a Nonclinical Elder Sample: An Open-Label Pilot Study.

BACKGROUND: Memory disorders are common among elder people, and nonclinical cognitive decline is commonly experienced with age. Preclinical investigations have explored the possible role of alpha-lipoic acid (ALA), a known antioxidant compound abundant in vegetables and animal tissues, in reducing oxidative stress in the aging brain and preventing cognitive decline. However, clinical evidence is limited, and the few existing results are contrasting. In addition, while most of the existing trials have been focused on the effects of ALA administration in Alzheimer's disease (AD) or other types of dementia, studies evaluating its effects on nonclinical elder population are still missing. METHODS: In the present open-label, pilot study, fifteen elder patients (mean age: 84.5 ± 5.77) received ALA at a daily dose of 600 mg/day for 12 weeks. General cognitive function, executive function, and mood symptom assessment were carried out at baseline and at the endpoint. RESULTS: Overall, ALA administration was generally well-tolerated (only one dropout due to gastrointestinal side effects). However, no statistically significant effects either on cognitive function, executive function, or mood were found. CONCLUSIONS: Despite several limitations, our study found no evidence of positive effects on cognition and mood after ALA administration in elder people without the diagnosis of AD or cognitive impairment. Further clinical trials are needed to better investigate ALA effectiveness on cognition and mood in elder subjects.

Job satisfaction in the health professions: The role of affective temperaments.

BACKGROUND: Job satisfaction, as a multidimensional psychological response to work experience, includes both cognitive and affective components which influence individuals' appraisals and state of minds. In recent years, researchers have begun to explore the psychological processes that might underlie the dispositional causes of job satisfaction. Affective temperaments can influence the experience of emotionally significant events at work and this, in turn, may influence job satisfaction. OBJECTIVE: To investigate possible associations between affective temperamental features and job satisfaction in the health professions. METHODS: The sample consisted of 294 subjects selected among health professionals. Data were collected by an online survey including the Professional Quality of Life (ProQOL) questionnaire and the short form of the Temperament Evaluation of Memphis, Pisa, Paris and San Diego (TEMPS-A) questionnaire. RESULTS: Hyperthymic, depressive, irritable and anxious temperaments predicted the risk of experiencing job dissatisfaction in healthcare professionals. No associations between cyclothymic temperament and job satisfaction were found. CONCLUSION: The identification of affective temperamental assets and liabilities is potentially useful in the development of supportive and psycho-educational strategies, aimed at preventing work-related stress and promoting mental health in workplaces, also reducing the risk of job dissatisfaction.

Emotional Temperament and Character Dimensions and State Anger as Predictors of Preference for Rap Music in Italian Population.

The objective of the current work was to examine the relationships between affective temperaments dimensions, trait anger, and the preference for rap music in a sample of Italian adults. An online survey was administered to 662 subjects. We assessed preference for rap music using a Likert scale. Ina addition, we investigated the sample' affective temperament traits using the Memphis, Pisa, Paris, and San Diego (TEMPS-A) short scale and the trait anger by using the Trait Anger component of the State Trait Anger Expression Inventory 2 (STAXI-2). Multiple linear regression indicated that cyclothymic temperament score, hyperthymic temperament score, and trait anger scores were positive predictors while older age, and depressive temperament and higher education score were negative predictors of preference for rap music. The results expand previous literature on personality and music preference indicating the association of high energy/high activity temperaments and trait anger to preference for rap music.

Metabolic and clinical effect of alpha-lipoic acid administration in schizophrenic subjects stabilized with atypical antipsychotics: A 12-week, open-label, uncontrolled study.

Background: Many of the atypical antipsychotics induce metabolic side effects, limiting their use in clinical practice. Alpha-lipoic acid (ALA) was proposed as a new approach in schizophrenia to improve metabolic effects of atypical antipsychotics. The aim of the study is to evaluate the effect of ALA on metabolic and clinical parameters among schizophrenic subjects. Methods: 15 schizophrenic subjects, in stable atypical antipsychotic monotherapy were included in the study. ALA was administrated at the oral daily dose of 600 â€‹mg/d in addition to antipsychotic therapy. Metabolic, clinical, and psychopathological parameters were measured at typical antipsychotics. e initial screening, and after 12 weeks. Results: ALA produced a statistically significant reduction in QTc (p â€‹= â€‹0.012), blood glucose (p â€‹= 0.005), AST (p â€‹= â€‹0.021), γGT (p â€‹= â€‹0.035), CPK (p â€‹= â€‹0.005) and prolactinaemia (p â€‹= â€‹0.026). In contrast, there was a significant increase in HbA1c (p â€‹= â€‹0.026). No effects on body weight and blood lipid levels (triglycerides, total cholesterol, HDL, LDL) emerged. Conclusions: ALA treatment appeared to be effective for reducing diabetes risk, liver functionality parameters, hyperprolactinaemia and QTC interval. ALA appears to be safe as adjunctive components in schizophrenia.

Sexual Desire and Body Image. Gender Differences and Correlations before and during COVID-19 Lockdown.

Recent literature has extensively examined sexual behavior during lockdown due to COVID-19. However, there are no recent studies that have considered the relationship between body image quality, sexual arousability, and sexual anxiety. The present study has two main objectives: (1) to examine gender differences in bodily and sexual experience; and (2) the comparison of bodily and sexual experience, before and during the COVID-19 lockdown. A total of 301 adult subjects (161 women and 140 men) aged between 16 and 73 years (Mean = 37.4; S.D. = 10.3) participated in the study. Data on biographical information were collected via an online panel. The Body Uneasiness Test (BUT) and the Sexual Arousability Inventory (SAI) were used for the assessment. Univariate ANOVA showed worse scores for women, compared with men, in terms of body image avoidance, depersonalization, overall severity of body image quality, sexual arousability, and sexual anxiety dimensions. When compared against time, only women showed significant correlations between the function of sexual arousal and all parameters concerning body image alteration. Interestingly, these correlations were weak and sporadic before lockdown, but strong and numerous during lockdown. This finding suggests that the impact of COVID-19 restrictions affected the female population more, with a profound repercussion on self-image and sexual and mental well-being.

COVID-19 Vaccination and Mental Disorders, What Has Been Accomplished and Future Direction.

The consequences of the pandemic on mental health are among the most important side effects of COVID-19. Wide concerns have emerged both regarding vaccine hesitation in the general population, and the vaccine's implementation plan. The aim of this study is to evaluate how the scientific community has investigated the relationship between the COVID-19 vaccine and mental disorders. Contrary to expectations, having a full-blown psychiatric pathology seems to positively affect the attitude towards the vaccine, except for PTSD. The intense fear that accompanied the current world emergency has made this pandemic unique; we discuss how it might be one of the factors involved in this result. Further experimental investigations are needed to estimate how personality traits, hyperarousal, and negative emotions influence vaccine compliance both in the general population and in people living with mental disorders.

Autistic Traits, Arousal, and Gender Features in a Nonclinical Sample of Italian Adolescents.

(1) Background: Subthreshold autism is a sub-clinical pattern of autism spectrum disorder-like (ASD-like) traits, including poor social skills, cognitive rigidity, anxiety, and aloofness. These ASD-like traits are significantly more prevalent among parents and relatives of participants with autism; however, evidence suggests that subclinical autistic traits are not restricted to the family members of individuals with autism but rather are continuously distributed in the general population. Though the autistic subclinical form is perhaps prevalent among adults, little attention has been paid to the association between autistic traits and global functioning in adolescence. The aim of the present study is to investigate the subthreshold autism phenotype in adolescence and its relationship with arousal correlates, exploring gender differences emerging in the sample. (2) Methods: A sample of 725 students (293 males and 432 females; mean age 17.19) were recruited from three high schools in Southern Italy. They were assessed by the following instruments: Autism Spectrum Quotient, Adult Autism Subthreshold Spectrum, Ritvo Autism and Asperger Diagnostic Scale 14, and Hyperarousal Scale. (3) Results: In males, significant direct correlations between all dimensions of arousal and all variables related to autistic traits emerged except for the correlations between the H-Scale "Introspection score", the AQ questionnaire "Total score" (p = 0.094), and the AdAS-Spectrum questionnaire "Empathy factor" (p = 0.210); in females, significant positive correlations between all dimensions of arousal and all variables related to autistic traits emerged. (4) Conclusions: In the sample of adolescents with subclinical profiles of autistic traits, the Empathy factor of the AdAS Spectrum questionnaire was significantly higher in the male group than in the female group, underscoring lower empathic abilities in the former group. In the male group, the empathy factor did not have a statistically significant correlation with the H-scale introspection factor or with the autistic traits measured by AQ. We suppose that in male adolescents, another hypothetical factor seems to intervene in the relationship between autistic traits and arousal. Otherwise, empathy is a preponderant factor closely related to hyper-arousal responses in female adolescents with autistic traits.

The relationship between subthreshold psychiatric symptoms and Internet Addiction in an Italian population.

BACKGROUND: Internet addiction (IA) is an emerging psychopathological entity, often comorbid with a variety of psychiatric disorders. Subthreshold psychopathology has recently emerged as a new field of research, with solid evidence highlighting its role in causing psychological distress. AIMS: The study aimed to evaluate the presence of subthreshold psychopathological symptoms and IA in Italian adults recruited from the general population, searching for possible correlations between specific subclinical psychiatric disorders and internet abuse. METHODS: The study was conducted by an online survey released through social networks, web advertising, institutional and professional mailing lists, and messaging services. The General 5-Spectrum Measure (GSM-V) and the Internet Addiction Test (IAT) were chosen to assess subthreshold symptoms, and IA, respectively. RESULTS: Significant positive correlations between the total score of the IAT total scores and the multiple domains of GSM-5 (p <0.0001), except for the "Mania" dimension (p = 0.717). CONCLUSIONS: IA is very common in subjects unaffected by major psychiatric disorders and it is associated with subthreshold psychopathological dimensions. Further studies on larger samples and the inclusion of a dimensional framework in research settings and clinical practice are needed to better understand the nature and the reciprocal relationships between IA and subthreshold psychopathology.

Mental Illness and Amyloid: A Scoping Review of Scientific Evidence over the Last 10 Years (2011 to 2021).

Amyloid precursor protein and its derivates represent a central factor in the process of neurodegeneration in Alzheimer's disease (AD). Since mental illnesses share with AD cognitive impairment, amyloid indicators have been used to explore the unknown pathophysiologic mechanisms underlining psychiatric illness. This work aims to compare the role of amyloid markers, together with tau proteins, among various mental disorders evaluating the possible role of altered amyloid metabolism in the onset and in the course of psychiatric diseases, considering the relationship with cognitive impairment in dementia. This review includes articles written in English, published between 1 January 2011 and 31 January 2021, which evaluated amyloid and tau proteins in psychiatric patients. After screening, 31 studies were included in the review. Results suggest that amyloid metabolism is altered in major psychiatric disorders and that it could be a marker of cognitive impairment. Nevertheless, the role of amyloid in mental diseases seems to be related to neurodevelopmental alteration as well as neurodegeneration processes, like in AD. The role of amyloid in the pathogenesis of mental disorders is still unknown. Amyloid should not be only considered as a marker of cognitive impairment in mental illness, but also for altered neurodevelopment.