Comparing the factor structures and reliabilities of the EPDS and the PHQ-9 for screening antepartum and postpartum depression: a multigroup confirmatory factor analysis.

To evaluate and compare the factor structure and reliability of EPDS and PHQ in antepartum and postpartum samples. Parallel analysis and exploratory factor analysis were conducted to determine the structure of both scales in the entire sample as well as in the antepartum and postpartum groups. McDonald's omega statistics examined the utility of treating items as a single scale versus multiple factors. Multigroup confirmatory factor analysis (MCFA) was utilized to test the measurement invariance between the antepartum and postpartum groups. Two-factor models fit best for the EPDS in both the antepartum and postpartum groups; however, the most reliable score variance was attributable to a general factor for each scale. MCFA provided evidence of weak invariance across groups regarding factor loadings and partial invariance regarding item thresholds. PHQ-9 showed a two-factor model in the antepartum group; however, the same model did not fit well in the postpartum group. EPDS should be preferred to PHQ-9 for measuring depressive symptoms in peripartum populations. Both scales should be used as a single-factor scale. Caution is required when comparing the antepartum and postpartum scores.

A Qualitative Study Regarding COVID-19 Inpatient Family Caregivers' Need for Supportive Care.

BACKGROUND: Family caregivers of COVID-19 inpatients are exposed to multiple sources of distress. These include not only losing friends, colleagues and members of the family, but also the fear of possible losses in sociality, finances and, impoverished communication with sick family members and health care providers. OBJECTIVE: This study describes the psychological experience of COVID-19 inpatient family caregivers to highlight the main sources of distress, issues, concerns and unmet needs. METHODS: Two focus groups were independently organized with COVID-19 inpatient family caregivers and health care personnel of COVID-19 wards in order to highlight family caregivers' practical and psychological burden and related needs. A thematic analysis was conducted to analyze the data. RESULTS: Family caregivers mentioned they needed more information about the patient's condition with more attention being paid to their own emotional state. Feelings of impotence, concerns about how to deal with patient's discharge, significant psychological distress, and anxiety were frequently reported by study participants. CONCLUSION: Study findings suggest the need to strengthen the assistance of COVID-19 patient family caregivers. In the pandemic scenario, family caregivers might represent a crucial resource, which can guarantee rapid discharges, support home health care and thus relieve pressure on hospital systems.

A screening and treatment programme to deal with perinatal anxiety and depression during the COVID-19 pandemic.

During a pandemic, pregnancy and the postnatal period are complicated by multiple factors. On the one hand, worries about one's own health and the health of loved ones, in particular of the newborn child, can increase the risk of some mental disorders, such as depression and anxiety in the pregnant woman. On the other hand, as happened for the COVID-19 epidemic in Italy, given the need for physical distancing, the maintenance of the social and family network, so important for new parents in the perinatal period, is lacking. In addition, health services are forced to reorganize their offerings to ensure maximum safety for their operators and patients. This work proposes a model of screening and treatment aimed at identifying women at risk and providing them with effective and safe treatment.

Is the association between precarious employment and mental health mediated by economic difficulties in males? Results from two Italian studies.

BACKGROUND: Flexible employment is increasing across Europe and recent studies show an association with poor mental health. The goal of the current study is to examine this association in the Italian population to assess the possible mediating role of financial strain. METHODS: Data were obtained by two Italian cross-sectional studies (PASSI and HIS) aimed at monitoring the general population health status, health behaviours and determinants. Mental health status was assessed using alternatively two validated questionnaires (the PHQ-2 and the MCS-12 score) and Poisson regression models were performed to assess if precarious work was associated with poor mental health. A formal mediation analysis was conducted to evaluate if the association between precarious work and mental health was mediated by financial strain. RESULTS: The analyses were performed on 31,948 subjects in PASSI and on 21,894 subjects in HIS. A nearly two-fold risk of depression and poor mental health was found among precarious workers, compared to workers with a permanent contract, which was strongly mediated by financial strain. CONCLUSIONS: Even with the limitations of a cross-sectional design, this research supports that precarious employment contributes through financial strain to reduce the mental health related quality of life and to increase mental disorders such as symptoms of depression or dysthymia. This suggests that when stability in work cannot be guaranteed, it would be appropriate to intervene on the wages of precarious jobs and to provide social safety nets for ensuring adequate income.

Parental Burden and its Correlates in Families of Children with Autism Spectrum Disorder: A Multicentre Study with Two Comparison Groups.

BACKGROUND: The effects of having a child with Autism Spectrum Disorder (ASD) on parents are multifaceted and pervasive. While ample evidence has been provided that these families are under severe stress, there are still several knowledge gaps and unresolved questions. OBJECTIVE: This study aimed at quantifying the subjective and objective burden of ASD in mothers and fathers, and at improving the understanding of the interplay between parental burden, child's characteristics, and parents' coping resources and strategies. METHODS: The parents of 359 children/adolescents with ASD were compared to parents of age-matched patients with Down syndrome (N=145) and Type 1 diabetes mellitus (N=155). Child's clinical characteristics and parents' caregiving burden, psychological distress, coping resources and strategies were assessed. RESULTS: The parents of children with ASD reported higher objective and subjective burden, more frequent psychological distress, lower social support. Mothers reported greater subjective burden than fathers. Structural equation modeling showed that the most consistent positive and negative predictors of objective and subjective burden were ASD symptom severity and social support, respectively. Other positive predictors were engagement, distraction and disengagement coping, intellectual disability, and adaptive functioning. Other negative predictors were spiritual wellbeing and hardiness. Some effects were indirect through social support and coping strategies. CONCLUSION: This study confirmed that parents of children with ASD carry a huge caregiving burden, and added to our understanding of the factors associated with burden. The findings may help inform the design of effective interventions aimed at reducing burden among the parents of children with ASD.

Normative data of the Magical Ideation Scale from childhood to adulthood in an Italian cohort.

The assessment of schizotypy allows to identify people at risk to develop psychosis. For this purpose, psychometric tools have been developed, such as the Magical Ideation Scale (MIS). This scale investigates attenuated forms of thought transmission experiences, thought withdrawal and aberrant beliefs, related to positive schizotypy. This study aims at providing an Italian version of the MIS and its normative data in the general population from childhood to adulthood, being the first study evaluating subjects under 17year-old. The Italian MIS version was translated by three independent operators and administered to 1378 non-clinical participants, stratified into four age groups (i.e., 8-13, 14-17, 18-24 and 25-34). The unidimensionality of the scale was supported, and its internal consistency was satisfactory (i.e., ordinal Cronbach's αs ranging from 0.86 to 0.90 in different age groups), as well as test-retest reliability (i.e., 1-month ICC of 0.82 in a retested sub-sample). Normative data for the age groups were provided. Specific gender and age-related differences in MIS score were found, i.e. females scored higher than males in the 25-34 age group, which in general, as a group, scored lower than all the other age groups. This study provided evidence of reliability for the Italian version of the MIS in childhood and adolescence, for the first time, as well as in adulthood, showing specific gender and age effects in the early adult cohort.

[Behavioural risk factors in L'Aquila (Central Italy) 3-5 years after the 2009 earthquake]. / Fattori di rischio comportamentali all'Aquila 3-5 anni dopo il terremoto del 2009.

OBJECTIVES: to evaluate the long-term impact on the health of the general population of L'Aquila earthquake that occurred on April 6th, 2009. DESIGN, SETTING AND PARTICIPANTS: three consecutive surveys were performed on samples of the population of 18-69 years resident in L'Aquila and in the other towns affected by the earthquake. Data on health-related quality of life, depressive disorders, behaviour risk factor, and adoption of preventive measures were collected through telephone interviews in 2007-2008, in 2010, and in 2011-2014. RESULTS: the prevalence of individuals who declared to have economic difficulties increased after 3-5 years from the earthquake (8% in 2010 vs. 14% in 2011-2014). Nevertheless, health-related quality of life improved (decrease of unhealthy days: 7 in 2010 vs. 5 in 2011-2014), while the prevalence of depressive symptoms decreased so that it reached the national average rates (16% in 2010 vs. 7% in 2011-2014). Lack of physical activity, a serious consequence of the first period after the earthquake, became less habitual (39% in 2010 vs. 27% in 2011-2014), probably due to an improvement in the urban redevelopment. The prevalence of smoking and harmful use of alcohol is high (34% and 21%), mostly among young adults. CONCLUSIONS: 3-5 years after the earthquake of L'Aquila, compared to 2010 the quality of life related to health is improved (except in people with at least one chronic disease), and the frequency of depressive symptoms decreased, a sign of an extended recovery from conditions caused by the earthquake, despite of an increasing economic difficulties. On the other hand, we must emphasize critical elements, such as the high prevalence of smoking and consumption of alcoholic beverages other than as part of the meals, especially among young people, and very frequent physical inactivity, particularly among the elderly, although lower than in 2010. Finally, adherence to preventive measures and screening for cancer, and adoption of road safety devices could be improved.

Depressive Symptoms and Behavior-Related Risk Factors, Italian Population-Based Surveillance System, 2013.

INTRODUCTION: Depression may increase the likelihood of adopting behaviors risky to health. Population studies investigating the association between depressive symptoms and behavior-related risk factors are lacking in Italy. The aim of this study was to estimate the prevalence of various self-reported behavior-related risk factors and to study their associations with current depressive symptoms in the Italian adult general population. METHODS: Data collected in 2013 from people aged 18 to 69 years participating in the Italian behavioral risk factor surveillance system were used for the analysis. Indicators of no leisure-time physical activity, obesity, cigarette smoking, and excessive alcohol consumption were investigated. Depressive symptoms were explored through the Patient Health Questionnaire-2. RESULTS: In the survey sample of 39,463 participants, 34.4% of adults engaged in no leisure-time physical activity, 26.2% were cigarette smokers, 11.5% were excessive alcohol consumers, and 10.3% were obese. The prevalence of depressive symptoms was 6.2%. People with depressive symptoms were more likely to be physically inactive (adjusted prevalence ratio [APR], 1.13), cigarette smokers (APR, 1.34), obese (APR, 1.27) and excessive alcohol consumers (APR, 1.43) than those without depressive symptoms. CONCLUSION: The contribution of this study to the existing evidence lies not just in confirming the association between depression and behavior-related risk factors in the Italian context but also in suggesting that programs for simultaneously improving people's mental and physical health should be developed and implemented.

Connecting psychosocial and personality characteristics with mental health outcomes. An Italian co-twin control study.

Exposure to stressful life events is common, and it is linked to increased psychological issues. As most likely people respond to stressors depending on environmental and genetic factors, we assessed in a twin study the association of some personal characteristics such as resilience and self-perception with anxiety, depression and stress in the late Covid pandemic period, to verify the underlying genetic and shared familial components. With this design, the strength of the associations was compared between individual-level and intrapair-level analyses. From June 2020 to December 2021, the Italian Twin Registry conducted a three-wave longitudinal study among adult twins using validated questionnaires, and 1,763 adult twins participated in the study (mean age 46 years, 67 % females, 70 % monozygotic). A regression-based within-pair differences model was applied to control for genetic and shared environmental confounding. Results showed that anxiety was linked negatively with resilience, social support and perceived health, and positively with risk perception and hypochondria. Depression was associated negatively with resilience, social support and perceived health, and positively with financial concern and hypochondria. Stress was associated negatively with resilience and perceived health, and positively with financial concern, risk perception and hypochondria. These results suggest potential etiological effects of the above-mentioned risk factors. While our findings need to be confirmed by longitudinal studies, they propose potential etiological models for mental disorders, indicating that addressing in the clinical practice factors such as self-perception, personality traits (resilience), environmental resources (social support), and comorbid disorders (hypochondria) could have therapeutic benefits while treating certain common mental disorders.

Screening for antenatal maternal depression: comparative performance of the Edinburgh Postnatal Depression Scale and Patient Health Questionnaire-9.

BACKGROUND: Maternal antenatal depression affects 21-28% of expectants globally and negatively impacts both maternal and child health in the short and long term. OBJECTIVE: To compare the psychometric properties and clinical utility of the Edinburgh Postnatal Depression Scale (EPDS) and the Patient Health Questionnaire (PHQ-9) in pregnant individuals. METHODS: In this cross-sectional study, 953 third-trimester pregnant Italian individuals completed both the EPDS and the PHQ-9. RESULTS: Both scales demonstrated good internal consistency (EPDS ω=0.83, PHQ-9 ω=0.80) and a moderate correlation between their scores (r=0.59). Concordance at recommended cut-off points (≥14 for both) was moderate (k=0.55). Factor analyses indicated a bifactor solution for the EPDS (dimensions: "depression" and "anxiety") and for the PHQ-9 (dimensions: "depression", "pregnancy symptoms", "somatic"). Benchmarks for clinical change were also established. CONCLUSIONS: The EPDS and PHQ-9 capture distinct aspects of perinatal depressive symptomatology. Clinically, these findings recommend using both scales in obstetric and gynaecologic settings to minimize false positives and negatives.

Exploring transgenerational inheritance in epigenotypes of DAT heterozygous rats: Circadian anomalies and attentional vulnerability.

Dopamine (DA) is mainly involved in locomotor activity, reward processes and maternal behaviors. Rats with KO gene for dopamine transporter (DAT), coding for a truncated DAT protein, are in hyperdopaminergic conditions and thus develop stereotyped behaviors and hyperactivity. Our aim was to test the prior transgenerational modulation of wild and truncated alleles as expressed in heterozygous DAT rats: specifically, we addressed the possible sequelae due to genotype and gender of the ancestors, with regard to behavioral differences in F1, F2, F3 rats. We studied non-classical DAT heterozygotes (HETs) based on two specular lines, with putative grand-maternal vs. grand-paternal imprinting. MAT females (F1; offspring of KO male and WT female) mated with a KO male to generate MIX offspring (F2). Specularly, PAT females (F1; offspring of KO female and WT male) mated with a KO male to generate PIX offspring (F2). Similarly to PAT, we obtained MUX (F2; HET offspring of MAT sire and KO dam); we also observed the F3 (MYX: HET offspring of KO male and MUX female, thus with DAT-KO maternal grandmother like also for PIX). We studied their circadian cycle of locomotor activity and their behavior in the elevated-plus-maze (EPM). Locomotor hyper-activity occurs in F1, the opposite occurs in F2, with MYX rats appearing undistinguishable from WT ones. Open-arm preference emerged in PIX and MIX rats. Only MAT and MYX rats showed a significant vulnerability for ADHD-like inattentive symptoms (duration of rearing in the EPM; Viggiano et al., 2002). A risk-taking profile is evident in the F2 phenotype, while inattentiveness from F1 progeny tends to be transferred to F3. We hypothesize that DAT-related phenotypes result from effective inheritance through pedigree of imprints that are dependent on grandparents, suggesting a protective role for gestation within a hyperdopaminergic uterus. For major features, similar odd (F1, F3) generations appear opposed to even (F2) ones; for minor specific features, the phenotype transfer may affect the progenies with a male but not a female DAT-KO ancestor.

[Occupational stress and mental health]. / Stress lavorativo e salute mentale.

One fifth of workers reports experiencing stress in the work environment in Europe. A number of studies show that psychosocial stressors in the workplace are associated with adverse physical and mental health outcomes, including symptoms of anxiety and depression. The present paper: briefly describes the characteristics of occupational stress and the main psychosocial stressful risk factors in the work environment; reports the main results of studies on psychosocial risk factors in the work environment as risk factor for common mental disorders; presents findings from an Italian study aimed at assessing prevalence of common mental disorders and workplace psychosocial stressors in a sample of hospital employees; provides the "Working conditions Questionnaire", a validated self-administered instrument to assess perceived stress in the workplace; this questionnaire includes the assessment of organizational justice.

Epidemiology of perinatal depression in Italy: systematic review and meta-analysis.

INTRODUCTION: This review aims to synthesise the studies that have estimated the prevalence of perinatal depression in Italy, summarising the results of the existing literature based on their quality. MATERIALS AND METHODS: Systematic searches were conducted in four major databases, and a random effect meta-analysis was performed to achieve the pooled variance of perinatal depression. RESULTS: The pooled prepartum risk of depression prevalence was 20.2% (CI 95% 15.3-24.5) while the postpartum risk of depression prevalence was 27.5% (CI 95% 17.8-37.3) for an Edinburgh Postnatal Depression Scale (EPDS) cut-off score ≥9 and 11.1% (CI 95% 6.0-16.2) for an EPDS cut-off score ≥12. Significant publication bias was found and was determined by the presence of a small study with a low prevalence and a large study with a high prevalence. CONCLUSION: The prevalence of perinatal risk of depression is similar to that reported in other countries. The high prevalence of prepartum risk suggests the need to activate specific prevention actions during this period.

Stability and change in genetic and environmental influences on depressive symptoms in response to COVID-19 pandemic.

Background: The rapid spread of the new Coronavirus and the consequent restrictions to contain transmission generated an unprecedented psychological impact on the general population. The Italian Twin Registry performed a longitudinal study to investigate to what extent genetic and environmental influences contributed to changes in depressive symptoms. Methods: Data from adult twins were collected. All participants completed an online questionnaire including the 2-item Patient Health Questionnaire (PHQ-2) just before (February 2020) and immediately after the Italian lockdown (June 2020). Genetic modeling based on Cholesky decomposition was used to estimate the role of genetic (A) and both shared (C) and unshared (E) environmental factors in the observed longitudinal course of depressive symptoms. Results: Longitudinal genetic analysis was based on 348 twin pairs (215 monozygotic and 133 dizygotic pairs) with a mean age of 42.6 years (range 18-93 years). An AE Cholesky model provided heritability estimates for depressive symptoms of 0.24 and 0.35 before and after the lockdown period, respectively. Under the same model, the observed longitudinal trait correlation (0.44) was approximately equally contributed by genetic (46%) and unshared environmental (54%) influences, while longitudinal environmental correlation was lower than genetic correlation (0.34 and 0.71, respectively). Conclusions: Although the heritability of depressive symptoms was rather stable across the targeted time window, different environmental as well as genetic factors seemed to act before and after the lockdown, which suggests possible gene-environment interaction.

Prevalence of anxiety and depression risk during the prepartum period in the different groups of women and responses from the Italian National Health Service.

BACKGROUND: Specific screening for anxiety and depression in pregnant women is important to identify those at risk and to provide timely intervention. The aims of the study were: 1) to compare the risk of anxiety and depression in four groups of pregnant women belonging to four types of healthcare centers distinguished by the level of risk: at low-risk; at high-risk for an obstetric reason; at high-risk for fetal anomalies; at high-risk for psychiatric conditions and 2) to identify the response that the National Health Service offers to women positively screened for anxiety and depression. METHODS: A cross-sectional study was conducted on 2801 pregnant women, cared for by National Health Service, divided into four groups: 1) low-risk pregnancy (N.=1970); 2) high-risk pregnancy for an obstetric reason (N.=218); 3) high-risk for fetal anomalies (N.=505); and 4) high-risk for psychiatric conditions (N.=108). Participants were screened using the Edinburgh Postnatal Depression Scale, the General Anxiety Disorder, and sociodemographic, anamnestic, and clinic questionnaires. RESULTS: 28.9% of participants obtained an EPDS Score ≥9 and 17.1% a GAD-7 Score ≥8. The group at high-risk for fetal anomalies presented the highest prevalence of anxiety (29.3%) and depression (49.1%) while the group at low risk presented the lowest prevalence of anxiety (13%) and depression (24.6%). The groups at risk for obstetric reasons presented an intermediate prevalence. Psychiatric conditions constituted a higher risk for anxiety than depression. Counselling is recommended for about 70% of women at risk for anxiety and depression. Moreover, about 15% of women positive for screening were initiated into psychotherapy and about 1.5% into pharmacotherapy. 15% of women positive for screening were referred to other specialists. CONCLUSIONS: This study underlined the relevance of a prompt response by the National Health Service to mental health needs, especially in the risk conditions related to obstetric and/or fetal anomalies and psychopathology.

The Italian SEME Surveillance System of Severe Mental Disorders Presenting to Community Mental Health Services.

Mental health is recognized worldwide as a major public health priority for the twenty-first century. Different actions are needed, including developing or strengthening national mental health information systems, based on standardized indicators that allow national and international monitoring. In 2008, the national Centre for Disease prevention and Control of the Italian Ministry of Health and the Mental Health Unit of the Italian National Institute of Health (INIH) jointly launched a mental health information system named SEME (an Italian acronym meaning 'mental health epidemiological surveillance') based upon data collected from trained psychiatrists working in 22 selected sentinel community mental health centers distributed across Italy and covering a total population of 1,941,853 inhabitants, in order to collect and report site-level information on first-contact patients suffering from specific severe mental disorders (schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, bipolar I disorder, anorexia nervosa, major depressive episode with psychotic symptoms or suicide attempt). Strengths of the system are the high reliability of diagnoses and the use of a web-based technique for data collection with data entry forms designed for ease of completion. During the first year of implementation of this system, a total of 343 first-contact patients met criteria for one of the severe mental disorders under surveillance. As the system includes standardized instruments to measure psychiatric symptoms and psychosocial functioning, it may facilitate health services research based on longitudinal measurements aimed at evaluating the continuity of psychiatric care and the effectiveness of innovative therapeutic and rehabilitative programs.

Measuring depression with questions about well-being: a study on psychiatric outpatients.

BACKGROUND: Most depression rating scales are characterized by negatively-phrased questions, exploring the presence of various symptoms. Questions such as those regarding suicidal ideation or painful experiences may reduce accept-ability or even lead the reader to withdraw participation in the study. Although positively-worded items may be useful, it should be acknowledged that without formal testing they cannot be assumed to be equivalent to negatively-worded ones. The aim of the present study was to test the reliability and validity of a depression rating scale including only positively-phrased items. METHODS: Two groups were enrolled in the study: the first comprised 104 adult psychiatric outpatients, the second 88 undergraduate students. All participants completed the depression scale of the Patient Health Questionnaire, the Zung Self-Rating Depression Scale, and the Positively-phrased Depression Scale (PDS), a 10-item self-report instrument in which the items are phrased in a positive way to reflect the absence of symptoms. Psychiatric outpatients also were rated by their clinician on the Hamilton Depression Rating Scale. RESULTS: The internal consistency of the PDS was satisfactory. The correlations between scores on the PDS and on the other depression scales were moderate to high. Mean PDS scores of patients with a diagnosis of depressive disorder were significantly higher than those of patients with other mental disorders. CONCLUSIONS: Despite some limitations, this study suggests that the PDS a valid and reliable instrument which might prove particularly useful for the assessment of depressive symptoms in studies where issues of acceptability are important, such as studies on non-clinical populations, occupational samples, and patients drawn from non-psychiatric settings.

Depressive symptoms among adults in 2018-2019 and during the 2020 COVID-19 pandemic in Italy.

BACKGROUND: Restrictions due to Coronavirus disease 2019 (COVID-19) has produced a large number of effects on mental health, which are expected to endure over time. In this study, we assessed depressive symptom levels before the COVID-19 pandemic, from January 2018 to December 2019, and during the pandemic in Italy in 2020. METHODS: We used the Patient Health Questionnaire-2 (PHQ-2), which is a screening instrument devised to detect probable depression and which has been annually administered in the framework of the Italian Behavioural Risk Factor Surveillance System since 2008. Depressive symptoms were assessed in a sample of 41,362 18-64-year-old adults surveyed in 2018-2019 and in a sample of 14,612 adults surveyed in 2020. RESULTS: The prevalence of depressive symptoms increased from 6.1% (95% CI 5.8%-6.4%) in 2018-2019 to 7.1% (95% CI 5.6%-8.6%) in March-April 2020. It then declined in May-June to 4.4% (95% CI 3.2%-5.5%) but in July-August it once again increased to 8.2% (95% CI 6.0%-10.4%) and, finally, gradually returned above the pre-lockdown level by November-December 2020 (5.9%; 95% CI 4.7%-7.1%). Compared to before the health crisis, during the pandemic, women and individuals with financial difficulties were found to have a significantly higher risk of depressive symptoms while younger, individuals with a higher education and those living in South Italy became increasingly vulnerable. CONCLUSIONS: While the average response to the pandemic was one of resilience over time, women and younger individuals were found to be particularly prone to the risk of depressive symptoms, as a result of the pandemic. In future investigations, the risk of individuals living in the South of Italy should also be taken into consideration.

Behavioral Phenotype in Heterozygous DAT Rats: Transgenerational Transmission of Maternal Impact and the Role of Genetic Asset.

Dopamine transporter (DAT) is involved in dopamine (DA) reuptake in presynaptic terminals. Deletion of DAT results in a hyperdopaminergic KO-rat phenotype. To conduct our studies in heterozygous DAT rats, several pedigree lines were created, with known derivation of the allele (i.e., maternal or paternal). Our purpose was to elucidate the role of parental origin rather than maternal care, assessing if maternal maltreatments generated sequelae in female offspring. In the first experiment, female rats and their pups were observed during postnatal lactation. Control dams were WT and heterozygous ones were MAT (but K-MAT, with previous experience of early maltreatment by their KO adoptive dams). WT dams were highly attracted to their offspring (predictably, they spent a lot of time licking their pups); in contrast, K-MAT dams showed strangely comparable levels of caring for their pups and exploring the environment. Subsequently, peculiar features of the circadian cycle were found in adolescent rats with different epigenotypes (WT, MUX = offspring of MAT father, MIK = offspring of K-MAT dam). The MIK epigenotype produced locomotor hyperactivity also during resting hours, well above typical values. The MUX epigenotype, on the other hand, was less active and presented a depression-like profile. This study is unique: maltreatment was generated in a spontaneous way from a DAT-KO mother to offspring. We highlight how future studies will address separate contributions by genotype and upbringing. In conclusion, paternal-allele asset generates sequelae diametrically opposed to the inheritance of early maternal trauma.

Genetic and environmental contributions to psychopathological symptoms stability and change across the COVID-19 pandemic.

Several longitudinal studies investigated changes in mental health related to the pandemic event. However, little research has focused on the mediating role of environmental and genetic factors. The current prospective study aimed to evaluate the genetic and environmental contributions to the stability of symptoms of depression, anxiety and stress during the COVID-19 crisis. A total of 798 adult twins, previously enrolled in the Italian Twin Register, participated in the study and completed on-line questionnaires sent out on June 2020 and December 2020. The nine-item Patient Health Questionnaire (PHQ-9), the six-item State-Trait Anxiety Inventory (STAI-6), and the Impact of Event Scale - Revised (IES-R) were administered to assess depressive and anxiety symptoms, and pandemic-related subjective distress, respectively. A considerable longitudinal stability was observed for each trait (range: 0.57, STAI-6 - 0.67, PHQ-9). Bivariate Cholesky decomposition indicated that genetic factors explained from 53% (IES-R) to 61% (STAI-6) of between-wave covariance and that genetic overlap between the two waves was almost complete (range: 0.91, STAI-6 - 0.99, PHQ-9). Our findings support the hypothesis, at least over the 6-month period examined, of a genetic stability between waves and of an environmental discontinuity due to changes in life conditions during the pandemic.