Association between childhood maltreatment and social functioning in individuals with affective disorders: A systematic review and meta-analysis

Clinical characteristics, life adversities and personality traits as predictors of onset or recurrence of affective episodes. A seven-year follow-up study in monozygotic twins

INTRODUCTION

This study investigated whether having a familial risk of affective disorders, subclinical psychopathology, functioning, personality traits, stressful life events, and childhood trauma predict the onset or recurrence of affective episodes.

METHOD

The present study is a 7-year follow-up study of a baseline sample of 204 monozygotic twins (MZ) with unipolar or bipolar disorder in remission or partial remission (affected), their unaffected co-twins (high-risk), and healthy twins with no personal or familial history of affective disorder (low-risk).

RESULTS

During the 7.0-year median follow-up time, 59.3 % of the affected twins had a recurrence of an affective episode, 33.3 % of high-risk twins, and 7.5 % of low-risk twins had an onset. Familial risk and being affected were predictors for onset and recurrence. Including the whole sample, subclinical symptoms, functioning, stressful life events, and the personality trait neuroticism were statistically significant predictors of onset and recurrence. Regarding the individual risk groups, increasing age was a significant predictor of increased hazard in the affected risk group and lower hazard in the low-risk group.

CONCLUSION

This follow-up study revealed that the most potent predictors for onset or recurrence were familial risk and having an affective disorder at baseline. Subclinical depressive symptoms, personality traits, stressful life events, and impaired functioning were significant contributors to onset risk and recurrence. These findings highlight the need to integrate relevant risk factors into daily clinical settings and integrate the most well-established factors as potential targets for primary care interventions.

Causal and common risk pathways linking childhood maltreatment to later intimate partner violence victimization

Childhood maltreatment and intimate partner violence (IPV) victimization are major psychiatric risk factors. Maltreatment substantially increases the likelihood of subsequent IPV victimization, but what drives this association is poorly understood. We analyzed retrospective self-reports of maltreatment and IPV victimization in 12,794 participants (58% women, 42% men) from the Twins Early Development Study at ages 21 and 26 using quantitative genetic methods. We estimated the etiological influences common to maltreatment and IPV, and the effect of maltreatment on IPV beyond such common influences. Participants who reported childhood maltreatment ( ~ 7% of the sample) were 3 times more likely than their peers to also report IPV victimization at age 21, 4 times more likely at 26. The association between maltreatment and IPV was mostly due to environmental influences shared by co-twins (42-43%) and genetic influences (30-33%), as well as nonshared environmental influences (25-27%). The association between maltreatment and IPV was similar for women and men, but its etiology partly differed by sex. Maltreatment had a moderate effect on IPV in phenotypic models (β = 0.25-0.30), decreasing to a small-to-moderate range in causally informative models accounting for their common etiology (β = 0.15-0.21). Risk factors common to maltreatment and IPV victimization are largely familial in origin, environmental and genetic. Even considering common risk factors, experiencing maltreatment may be causally related to subsequent IPV victimization. Interventions promoting safe intimate relationships among young adults exposed to maltreatment are warranted and should address family-level environmental risk and individual-level risk shaped by genetics.

Understanding the Heterogeneity of Maltreatment Effect: the Role of Temperamental Sensitivity

Despite the impact of maltreatment on child psychopathology, research has shown that the effects of maltreatment can vary depending on individual characteristics. Guided by differential susceptibility theory, this multi-method longitudinal study examined the role of temperamental sensitivity in shaping the relation between maltreatment and the development of child psychopathology over time. Participants included 316 maltreated and 269 non-maltreated children who attended a research summer camp and were followed over two measurement occasions spaced roughly one year apart (Wave 1: Mage = 9.35 years old; 47.1% girls, 66.7% Black, 21.1% White). Maltreatment status and timing were determined via examination of Department of Human Services records for the maltreated group. Camp counselors rated temperamental sensitivity at the first wave using the Temperamental Sensitivity Q-scale. Child internalizing and externalizing problems were rated by counselors at both measurement occasions. Findings indicated that maltreatment, whether measured broadly or by developmental timing (reflecting early onset and prolonged exposure), was linked to greater increases in externalizing problems over time. Greater temperamental sensitivity was associated with greater decreases in externalizing problems but greater increases in internalizing problems. The relation between childhood maltreatment and changes in internalizing problems was moderated by temperamental sensitivity. While children with high temperamental sensitivity showed higher increases in internalizing problems regardless of maltreatment experiences, children with lower temperamental sensitivity exhibited greater increases in internalizing problems only if exposed to childhood maltreatment. These findings highlight the role of temperamental sensitivity in high-risk contexts and provide a more nuanced understanding of the impact of childhood maltreatment.

Emotional regulation mechanisms regarding posttraumatic and depressive symptoms in maltreated youth

Maltreated youth are a particularly vulnerable group that often contends with multifaceted mental health challenges, especially symptoms of posttraumatic stress and depression. Emotional dysregulation may have a central role in linking victimization to youth psychopathology in this population, but few have examined the effect of specific mechanisms such as expressive suppression and cognitive reappraisal in this regard. The present study examined these mechanisms vis-à-vis posttraumatic and depressive symptoms in a highly diverse sample of 133 youth aged 11-17 years who were removed from home following maltreatment. Expected positive relationships were found with respect to expressive suppression and total and cluster (i.e., intrusion, avoidance, alterations in cognition and mood, and alterations in arousal and reactivity) posttraumatic stress symptoms as well as depressive symptoms. Conversely, unexpected positive relationships were found with respect to cognitive reappraisal and these symptoms only for specific groups, notably males, younger youth, and those who had not experienced sexual maltreatment. The findings may have implications for tailoring clinical protocols for this vulnerable population, and may offer directions for integrating expressive suppression and cognitive reappraisal into transdiagnostic models of psychopathology in youth.

Global Diversity in Bipolar Disorder: The Role of Cultural and Social Differences With a View to Genomics

As global gene discovery efforts move away from a historic Eurocentric focus and advance toward embracing more diverse populations, consideration of sociocultural aspects of bipolar disorder (BD) become critical to their success. Diversity can be leveraged to accelerate gene discovery, via different patterns of linkage disequilibrium that lead to greater resolution of mapping association signals, and convergence of genes and pathways implicated within and across diverse ancestral groups, improving our understanding of the molecular underpinnings of disease. However, it is not just the differences in linkage disequilibrium structure and allele frequency that drive differences in genomic signals between populations. In this review, we focus on the role of social, cultural, and societal factors on BD and their potential impact on disease prevalence, clinical course and outcome, and disease burden. Social, cultural, and geographical differences in expression of symptoms and frequency of clinical subtypes in BD present both opportunities for and challenges to the field. In this era of global multiancestry research, resources that facilitate the collection and harmonization of data from culturally and ancestrally diverse population groups will enhance our ability to gain true biological understanding. Such resources are essential to disambiguate the genetic and environmental components of disease risk, as well as inform effective lifestyle interventions to improve outcome for global citizens living with BD.

Cognitive behavioural therapy plus Kiesler Circle Training (CBT+) versus CBT only for patients with interpersonal problems: study protocol for a randomised controlled feasibility trial

INTRODUCTION

Interpersonal problems are a transdiagnostic risk factor for the development and maintenance of various psychiatric disorders, including anxiety and depression. Interventions that address these interpersonal challenges could therefore play a crucial role in enhancing mental health. This study aims to evaluate the efficacy and feasibility of a transdiagnostic group intervention, the Kiesler Circle Training (KCT), in improving interpersonal skills.

METHODS AND ANALYSIS

In a prospective randomised controlled trial (RCT), 156 outpatients with a primary diagnosis of either depression or anxiety disorder according to DSM-5, and significant interpersonal problems, will be investigated. All patients will receive individual, state-of-the-art cognitive behavioural therapy (CBT) during the study. They will be randomly assigned to one of two conditions: the experimental group will receive the KCT in group sessions, in addition to individual CBT, while the control group will receive only individual CBT. The KCT intervention consists of 1 introductory individual session and 12 weekly group sessions, each lasting 100 min, with groups of up to 10 patients. KCT includes five sequential modules: the interpersonal circle, nonverbal communication, verbal communication, conflict resolution and empathy training. It is hypothesised that the experimental group will show (a) greater reduction in interpersonal problems from pre-assessment to post-assessment and (b) greater symptomatic improvement regarding the primary diagnosis. Child maltreatment is expected to moderate the trajectory of interpersonal problems. This study aims to provide evidence for the feasibility of KCT as a modular transdiagnostic add-on approach for patients with interpersonal difficulties.

ETHICS AND DISSEMINATION

This study obtained approval from the ethics committees at the Charité Berlin, the Medical School of Berlin and the University of Greifswald. All results will be disseminated through peer-reviewed articles in scientific journals and contributions to national and international conferences.

TRIAL REGISTRATION NUMBER

DRKS00032467, NCT06170801 (see Supplementary Material).

Highest correlations between emotion regulation strategies and mood symptoms in bipolar disorder: A systematic review and Bayesian network meta-analysis

Bipolar disorder (BD) is associated with alterations in emotion regulation (ER) strategies, with both depressive and (hypo)manic symptoms correlated with utilization of maladaptive instead of adaptive strategies. However, which ER strategies are the most affected during the most severe mood symptoms remains unclear despite the potentially relevant treatment implications. To this end, we conducted a systematic review and Bayesian network meta-analysis (NMA) of studies documenting correlations between ER and depressive and (hypo)manic symptoms of BD, from inception until November 9th, 2023. We included 15 studies in the review, 14 of which provided data to conduct a Bayesian NMA. Rumination emerged as the ER strategy most strongly associated with both depressive (ES=0.43, 95 %CrI=0.27,0.59) and (hypo)manic symptoms (ES=0.26, 95 %CrI=0.05,0.46) of BD. Other ER strategies showed associations primarily with depressive symptoms. There was no significant heterogeneity or network inconsistency. These findings emphasize the importance of rumination in BD and suggest that altered ER strategies are more evident in depressive symptoms rather than (hypo)manic ones. While promising for targeted interventions, these results are based on cross-sectional data, limiting causal interpretation. Future longitudinal studies are necessary to clarify the temporal dynamics of the relationship between affective symptoms and ER in BD.

Triangulating the associations of different types of childhood adversity and first-episode psychosis with cortical thickness across brain regions

BACKGROUND

Both childhood adversity (CA) and first-episode psychosis (FEP) have been linked to alterations in cortical thickness (CT). The interactive effects between different types of CAs and FEP on CT remain understudied.

METHODS

One-hundred sixteen individuals with FEP (mean age = 23.8 ± 6.9 years, 34% females, 80.2% non-affective FEP) and 98 healthy controls (HCs) (mean age = 24.4 ± 6.2 years, 43% females) reported the presence/absence of CA <17 years using an adapted version of the Childhood Experience of Care and Abuse (CECA.Q) and the Retrospective Bullying Questionnaire (RBQ) and underwent magnetic resonance imaging (MRI) scans. Correlation analyses were used to assess associations between brain maps of CA and FEP effects. General linear models (GLMs) were performed to assess the interaction effects of CA and FEP on CT.

RESULTS

Eighty-three individuals with FEP and 83 HCs reported exposure to at least one CA. CT alterations in FEP were similar to those found in participants exposed to separation from parents, bullying, parental discord, household poverty, and sexual abuse (r = 0.50 to 0.25). Exposure to neglect (β = -0.24, 95% CI [-0.37 to -0.12], p = 0.016) and overall maltreatment (β = -0.13, 95% CI [-0.20 to -0.06], p = 0.043) were associated with cortical thinning in the right medial orbitofrontal region.

CONCLUSIONS

Cortical alterations in individuals with FEP are similar to those observed in the context of socio-environmental adversity. Neglect and maltreatment may contribute to CT reductions in FEP. Our findings provide new insights into the specific neurobiological effects of CA in early psychosis.

Asian Americans' childhood emotional abuse, emotional neglect, and opioid use: Distress intolerance as moderator

Asian Americans are highly underrepresented in opioid use research, despite recent studies demonstrating the presence of opioid use behaviors in Asian Americans and distinct negative outcomes of opioid use among Asian Americans in comparison to White adults. Emotional abuse and emotional neglect are important risk factors that may impact opioid use. Thus, the purpose of this study was to investigate (a) the associations between childhood emotional trauma (emotional abuse and emotional neglect) and opioid use, and (b) the role of distress intolerance as a moderator. 279 Asian American participants completed an online remote survey. Our findings revealed that childhood emotional abuse and emotional neglect were both significantly and positively associated with opioid use. We found that distress intolerance moderated the association between childhood emotional abuse and opioid use such that at low levels of emotional abuse, participants who exhibited greater distress intolerance displayed greater opioid use. These findings indicate that emotional abuse and neglect are specific forms of childhood trauma that are significantly associated with opioid use, perhaps as a maladaptive coping mechanism that capitalizes on the analgesic effects of opioids on the psychological pain from childhood emotional trauma. Additionally, marginalized populations that demonstrate distress intolerance may suffer negative health outcomes such as opioid use.

The Relationship Between Self-Compassion and Resilience in the General Population: Protocol for a Systematic Review and Meta-Analysis

BACKGROUND

Resilience can protect individuals from the negative impact of adversity, facilitating a swift recovery. The exploration of protective factors contributing to resilience has been a central focus of research. Self-compassion, a positive psychological construct that involves treating oneself with kindness, holds the potential to bolster resilience. Although several studies have indicated an association between self-compassion and resilience, there is a lack of systematic reviews and meta-analyses examining this relationship and the potential moderators and mechanisms.

OBJECTIVE

This study aimed to systematically review the literature on the relationship between self-compassion and resilience in the general population, perform a meta-analysis to quantify the effect size of their association, and explore potential moderators (eg, age, gender, culture, and health status) and mediators.

METHODS

We will search the Web of Science, PsycINFO, MEDLINE, Scopus, CINAHL, and CNKI databases for peer-reviewed studies (including observational and experimental studies) that examined the relationship between self-compassion and resilience, with no language restrictions. There are no restrictions regarding participants' age, gender, culture, or health status. Qualitative studies, conference abstracts, review articles, case reports, and editorials will be excluded. Two reviewers (XL and JH) will independently screen the literature, extract data, and assess the quality of the eligible studies. If possible, the pooled effect size between self-compassion and resilience will be meta-analyzed using a random-effect model. Meta-regression and subgroup analysis will be conducted to examine the moderating roles of age, gender, culture, health status, and other potential moderators. The characteristics and main findings of eligible studies will be summarized in tables and narrative descriptions. Results from the meta-analysis, meta-regression, and subgroup analysis will be presented quantitatively.

RESULTS

We registered our protocol with PROSPERO, conducted the search, and initiated the screening in April 2024. We expect to start data analysis in October 2024 and finalize the review by March 2025.

CONCLUSIONS

The systematic review and meta-analysis will provide evidence on the protective role of self-compassion in resilience under adversity. Our investigation into potential moderators will highlight the contexts and groups where the benefits of self-compassion can be maximized. The findings are expected to provide valuable insights for health care professionals and stakeholders, informing the development of interventions aimed at enhancing resilience by fostering self-compassion.

TRIAL REGISTRATION

PROSPERO CRD42024534390; https://tinyurl.com/3j3rmcja.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

PRR1-10.2196/60154.

Child maltreatment and peer relationship quality: Types and timing of maltreatment and gender differences

INTRODUCTION

Research demonstrates that child maltreatment can negatively impact adolescent peer relationships. It is not well understood, however, how the type of maltreatment and its timing (when it occurs) affects the dimensions of peer relationship quality (i.e., companionship, conflict, satisfaction, and intimacy) and differences between genders. This study examines the effects of type and timing of child maltreatment on peer relationship quality, while also exploring the role of gender differences.

METHODS

This study involved 851 adolescents (56.1% girls, 56.2% Black, and 26.8% low-income) drawn from the Longitudinal Studies of Child Abuse and Neglect (LONGSCAN). We used Child Protective Services' information for the type and timing of child maltreatment, along with self-reports of peer relationship quality. Generalized Estimating Equations (GEEs) were conducted.

RESULTS

Sexual abuse and neglect during adolescence were associated with less satisfaction and lower levels of companionship, respectively. Physical abuse during middle childhood was associated with lower levels of intimacy. We also found interactions between gender and type and timing of maltreatment. Compared to girls, boys exhibited lower levels of companionship and satisfaction if they experienced sexual abuse during adolescence.

CONCLUSION

These findings suggest a need for maltreatment-prevention efforts targeting school-aged children and adolescents, as well as gender-sensitive interventions for high-risk boys with a history of maltreatment.

Network analysis of childhood maltreatment and internet addiction in adolescents with major depressive disorder

BACKGROUND

Childhood maltreatment (CM) is closely linked to internet addiction (IA), especially in adolescents with Major Depressive Disorder (MDD). Previous studies have shown that adolescents who experience CM are more likely to develop IA and other psychological problems. This study aims to explore the complex relationship between CM and IA through network analysis, particularly identifying the core symptoms and bridge symptoms to better understand the development of IA in these adolescents.

METHODS

A cross-sectional study was conducted in seven hospitals in Anhui Province, China, involving 332 adolescents diagnosed with MDD using DSM-5 criteria. The Childhood Trauma Questionnaire - Short Form (CTQ-SF) and the Internet Addiction Test (IAT) were used to assess CM and IA symptoms, respectively. Gender-based network analysis was also performed.

RESULTS

Network analysis constructed a CM-IA network and identified core and bridge symptoms. "Depress/moody/nervous being offline", "Request an extension for longer time", "Sleep loss due to late-night logins", and "emotional abuse" emerged as central symptoms within the CM-IA network. Additionally, "emotional abuse", "sexual abuse", and "complaints about online time" were identified as key bridge symptoms linking CM and IA. These symptoms demonstrated significant connectivity, underscoring their critical role in linking CM and IA.

CONCLUSION

The findings highlight the complex relationship between CM and IA in adolescents with MDD. Specific symptoms, such as emotional abuse and online-related symptoms, play important roles in understanding and intervening in adolescent IA. Future interventions should target these core and bridge symptoms for more effective prevention and treatment.

Cognitive reserve and cognition in mood disorders: A systematic review and meta-analysis

Cognitive functioning heterogeneity is a well-recognized phenomenon in individuals diagnosed with mood disorders. Cognitive Reserve (CR) has been linked to multiple positive outcomes, including cognitive performance in these patients. This systematic review and meta-analysis aim to provide a comprehensive analysis of the relationship between CR and cognitive functioning in individuals with mood disorders, including bipolar disorder and depressive disorders. Following PRISMA guidelines, a systematic review and meta-analysis was conducted of original research exploring the relationship between CR and cognitive performance in adult individuals with mood disorders. The literature search was conducted on PubMed, Scopus, and Web of Science, from 2002 to September 2023, and the Newcastle-Ottawa Scale (NOS) was used to evaluate the quality of studies. Overall, 17 studies met the inclusion criteria for the systematic review and 11 for the meta-analysis. Both qualitative and quantitative findings suggested a positive relationship between CR measures and cognitive domains. CR emerges as a possible protective factor for cognitive functioning in adult individuals with mood disorders, potentially helping to mitigate the cognitive impairments associated with the disorder. These findings underscore the importance of the fact that promoting and enhancing CR could help in the cognitive prognosis of this population.

Social dysfunction relates to shifts within socioaffective brain systems among Schizophrenia and Alzheimer's disease patients

Social dysfunction represents one of the most common signs of neuropsychiatric disorders, such as Schizophrenia (SZ) and Alzheimer's disease (AD). Perturbed socioaffective neural processing is crucially implicated in SZ/AD and generally linked to social dysfunction. Yet, transdiagnostic properties of social dysfunction and its neurobiological underpinnings remain unknown. As part of the European PRISM project, we examined whether social dysfunction maps onto shifts within socioaffective brain systems across SZ and AD patients. We probed coupling of social dysfunction with socioaffective neural processing, as indexed by an implicit facial emotional processing fMRI task, across SZ (N = 46), AD (N = 40) and two age-matched healthy control (HC) groups (N = 26 HC-younger and N = 27 HC-older). Behavioural (i.e., social withdrawal, interpersonal dysfunction, diminished prosocial or recreational activity) and subjective (i.e., feelings of loneliness) aspects of social dysfunction were assessed using the Social Functioning Scale and De Jong-Gierveld loneliness questionnaire, respectively. Across SZ/AD/HC participants, more severe behavioural social dysfunction related to hyperactivity within fronto-parieto-limbic brain systems in response to sad emotions (P = 0.0078), along with hypoactivity of these brain systems in response to happy emotions (P = 0.0418). Such relationships were not found for subjective experiences of social dysfunction. These effects were independent of diagnosis, and not confounded by clinical and sociodemographic factors. In conclusion, behavioural aspects of social dysfunction across SZ/AD/HC participants are associated with shifts within fronto-parieto-limbic brain systems. These findings pinpoint altered socioaffective neural processing as a putative marker for social dysfunction, and could aid personalized care initiatives grounded in social behaviour.

Linkages between childhood emotional maltreatment and adulthood marital attitudes among rural first-generation college students in China: A latent profile analysis and multigroup comparisons

BACKGROUND

Although there is a wealth of evidence indicating the enduring consequences of childhood emotional maltreatment (CEM) on social and relational functioning across life stages, little known about how CEM affects marital attitudes in emerging adulthood, particularly among rural first-generation college students (rural FGCS) at the critical stage of developing romantic relationships.

OBJECTIVE

To explore whether differential patterns of CEM existed among rural FGCS in China during emerging adulthood. Furthermore, the study aims to examine the potential differences in the chain mediating role of CEM on the pathway to adulthood marital attitudes across different CEM profiles.

PARTICIPANTS AND SETTING

Using a cluster sampling approach, a total of 3848 rural first-generation college freshmen (males = 39.2 %, mean age = 18.42 years) were recruited from three universities in China.

METHODS

Latent profile analysis was utilized to identify potential patterns of CEM using Mplus version 7.4. Structural equation modeling and multigroup comparisons were then performed to investigate the association between CEM and attitudes towards marriage in emerging adulthood, utilizing AMOS 24.0.

RESULTS

Three profiles of CEM was identified among rural FGCS: a low-CEM group (51.87 %), a moderate-CEM group (36.69 %), and a severe-CEM group (11.44 %). The association between CEM and adulthood marital attitudes was mediated by core self-evaluation and meaning in life. However, the mediation effects varied across the three CEM profiles. In the low-CEM group, core self-evaluation and meaning in life were observed to partially mediate the negative association between CEM and adulthood marital attitudes. On the other hand, in the moderate-CEM and severe-CEM groups, the relationship between CEM and adulthood marital attitudes was fully mediated by core self-evaluation.

CONCLUSIONS

The study's findings suggest that CEM is a significant predictor of marital attitudes among rural FGCS during emerging adulthood, with the severity of emotional neglect and abuse being the primary distinguishing factor between different CEM profiles. Core self-evaluation plays an important role in this relationship. Future clinical interventions could benefit from focusing on enhancing core self-evaluation and meaning in life, particularly for those with CEM experiences.

Clinical and personal predictors of functioning in affective disorders: Exploratory results from baseline and 6-month follow-up of a randomised controlled trial

Comprehensive knowledge of factors causing and sustaining functional impairment in patients with affective disorders is warranted. The aim is to investigate associations between clinical factors (such as affective symptoms) and personal factors (such as personality traits, coping strategies, and childhood trauma experiences) on functioning and improvement of functioning in patients with affective disorders. This exploratory study includes data from 103 patients with bipolar disorder and unipolar depressive disorder. Clinician-rated functioning was assessed at baseline using the Functioning Assessment Short Test (FAST), and performance-based functioning was assessed at baseline and 6-month follow-up using the Assessment of Motor and Process Skills (AMPS). Data on clinical and personal factors were collected at baseline. Personal factors were measured by the Eysenck Personality Inventory (EPQ), Coping Inventory for Stressful Situations (CISS) and Childhood Trauma Questionnaire (CTQ). Pearson correlations and multiple linear regression models were used to analyse the association of clinical and personal factors with baseline functioning (FAST) and to identify predictors of improvement in functioning (AMPS) from baseline to follow-up. At baseline, greater depressive symptom severity, the personality trait neuroticism, emotional coping, and childhood trauma all correlated with poorer functioning (higher FAST scores). In multiple linear regression models, depression severity, emotional coping and childhood trauma were significant predictors of poorer functioning. More childhood trauma was a predictor of less functional improvement measured by AMPS at 6-month follow-up. In conclusion, maladaptive coping styles and depressive symptoms contribute to functional impairment in patients with affective disorders, while childhood trauma has a negative impact on long-term functional outcomes.

Atypical brain structural connectivity and social cognition in childhood maltreatment and peer victimisation

BACKGROUND

Childhood maltreatment (CM) is associated with neurobiological aberrations and atypical social cognition. Few studies have examined the neural effects of another common early-life interpersonal stressor, namely peer victimisation (PV). This study examines the associations between tract aberrations and childhood interpersonal stress from caregivers (CM) and peers (PV), and explores how the observed tract alterations are in turn related to affective theory of mind (ToM).

METHODS

Data from 107 age-and gender-matched youths (34 CM [age = 19.9 ± 1.68; 36%male], 35 PV [age = 19.9 ± 1.65; 43%male], 38 comparison subjects [age = 20.0 ± 1.66; 42%male] were analysed using tractography and whole-brain tract-based spatial statistics (TBSS).

RESULTS

At the whole-brain level using TBSS, the CM group had higher fractional anisotropy (FA) than the PV and comparison groups in a cluster of predominantly limbic and corpus callosal pathways. Segmented tractography indicated the CM group had higher FA in right uncinate fasciculus compared to both groups. They also had smaller right anterior thalamic radiation (ATR) tract volume than the comparison group and higher left ATR FA than the PV group, with these metrics associated with higher emotional abuse and enhanced affective ToM within the CM group, respectively. The PV group had lower inferior fronto-occipital fasciculus FA than the other two groups, which was related to lower affective ToM within the PV group.

CONCLUSION

Findings suggest that exposure to early-life stress from caregivers and peers are differentially associated with alterations of neural pathways connecting the frontal, temporal and occipital cortices involved in cognitive and affective control, with possible links to their atypical social cognition.

Struggling Can Also Show on the Inside: Current Knowledge of the Impact of Childhood Maltreatment on Biomarkers in Mood Disorders

The link between childhood maltreatment and mood disorders is complex and involves multiple bio-psycho-social factors that affect multiple molecular pathways. The present narrative review aims to clarify the current understanding of the impact of childhood maltreatment on biomarkers in patients with mood disorders and their first-degree relatives. Neurotransmitters, such as serotonin, dopamine, norepinephrine, and hormones (eg the stress hormone cortisol), play a crucial role in regulating mood and emotion. Childhood maltreatment can alter and affect the levels and functioning of these neurotransmitters in the brain; further, childhood maltreatment can lead to structural and connectivity changes in the brain, hence contributing to the development of mood disorders and moderating illness presentation and modifying response to treatments. Childhood maltreatment information, therefore, appears mandatory in treatment planning and is a critical factor in therapeutic algorithms. Further research is needed to fully understand these pathways and develop new treatment modalities for individuals with mood disorders who have experienced childhood maltreatment and effective preventive interventions for individuals at risk of developing mood disorders.

The relationship between childhood interpersonal and non-interpersonal trauma and autobiographical memory: a systematic review

Childhood trauma can have negative effects on several domains of mental functioning, including Autobiographical Memory (AM). Conflicting results emerge in the scientific literature regarding the effects of childhood trauma on AM. In this review, we explored the relationship between the childhood trauma and AM, classifying childhood trauma as interpersonal, non-interpersonal and overall (interpersonal and non-interpersonal). We carried out a systematic literature review, following the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA statement). From searching the PubMed, Scopus, and Web of Science databases, we identified 48 studies conducted from 2014 to 2023, which were included when they: (a) were written in English, (b) investigated the relationship between AM and childhood trauma, (c) included a sample of children, adolescents, or adults who had experienced childhood interpersonal and/or non-interpersonal trauma. Of the 48 eligible studies, 29 referred to trauma of an interpersonal nature, 12 to trauma of a non-interpersonal nature, and 7 to overall trauma. Regarding the relationship between childhood trauma and AM, 24 studies found a negative relationship between childhood interpersonal trauma and AM; among the articles on non-interpersonal trauma, 10 studies found no relevant relationship; in the studies on overall trauma, 4 articles found negative relationship between overall trauma and AM. The literature explored in our systematic review supports the prevalence of a negative relationship between interpersonal childhood trauma and AM. This relationship is present regardless of psychiatric disorders (e.g., Depression, Post Traumatic Stress Disorder, and Personality Disorders), and in the presence of the latter, AM results even more fragmented. Future research should use more accurate methodologies in identifying and classifying childhood trauma in order to more precisely determine its effect on AM.

Differences in facial emotion recognition between bipolar disorder and other clinical populations: A systematic review and meta-analysis

Facial emotion (or expression) recognition (FER) is a domain of affective cognition impaired across various psychiatric conditions, including bipolar disorder (BD). We conducted a systematic review and meta-analysis searching for eligible articles published from inception to April 26, 2023, in PubMed/MEDLINE, Scopus, EMBASE, and PsycINFO to examine whether and to what extent FER would differ between people with BD and those with other mental disorders. Thirty-three studies comparing 1506 BD patients with 1973 clinical controls were included in the present systematic review, and twenty-six of them were analyzed in random-effects meta-analyses exploring the discrepancies in discriminating or identifying emotional stimuli at a general and specific level. Individuals with BD were more accurate in identifying each type of emotion during a FER task compared to individuals diagnosed with schizophrenia (SCZ) (SMD = 0.27; p-value = 0.006), with specific differences in the perception of anger (SMD = 0.46; p-value = 1.19e-06), fear (SMD = 0.38; p-value = 8.2e-04), and sadness (SMD = 0.33; p-value = 0.026). In contrast, BD patients were less accurate than individuals with major depressive disorder (MDD) in identifying each type of emotion (SMD = -0.24; p-value = 0.014), but these differences were more specific for sad emotional stimuli (SMD = -0.31; p-value = 0.009). No significant differences were observed when BD was compared with children and adolescents diagnosed with attention-deficit/hyperactivity disorder. FER emerges as a potential integrative instrument for guiding diagnosis by enabling discrimination between BD and SCZ or MDD. Enhancing the standardization of adopted tasks could further enhance the accuracy of this tool, leveraging FER potential as a therapeutic target.

Correlation between emotion dysregulation and mood symptoms of bipolar disorder: A systematic review and meta-analysis

BACKGROUND

Emotion dysregulation (ED) is a transdiagnostic construct characterized by difficulties regulating intense emotions. People with bipolar disorder (BD) are more likely to show ED and use maladaptive emotion regulation strategies than adaptive ones. However, little is known about whether ED in BD is a trait or it is rather an epiphenomenon of mood symptoms.

METHODS

We conducted a systematic review and meta-analysis of the evidence across major literature databases reporting correlations between measures of emotion regulation (overall ED and different emotion regulation strategies) and measures of depressive and (hypo)manic symptoms in BD from inception until April 12th, 2022.

RESULTS

Fourteen studies involving 1371 individuals with BD were included in the qualitative synthesis, of which 11 reported quantitative information and were included in the meta-analysis. ED and maladaptive strategies were significantly higher during periods with more severe mood symptoms, especially depressive ones, while adaptive strategies were lower.

CONCLUSION

ED significantly correlates with BD symptomatology, and it mainly occurs during mood alterations. ED may be a target for specific psychotherapeutic and pharmacological treatments, according to precision psychiatry. However, further studies are needed, including patients with mood episodes and longitudinal design, to provide more robust evidence and explore the causal direction of the associations.

Child maltreatment and resilience in adulthood: a protocol for a systematic review and meta-analysis

Background: Although child maltreatment (CM) has been linked to health problems and poor psychosocial functioning, not all individuals exposed to CM develop or experience negative consequences later in life. This suggests that some individuals show resilience after being exposed to CM. However, conclusions have been limited by inconsistent findings across different CM subtypes and resilience domains.Objective: To develop a protocol for conducting a systematic review and meta-analysis to quantify associations between CM (overall and its subtypes) and resilience (global and its multiple domains) in adulthood, and to examine moderators and mediators of these associations.Method: PubMed, PsycINFO, Embase, Scopus, and Web of Science will be searched to identify relevant studies on the association between CM (exposure) and resilience (outcome) in adults (≥ 18 years). Data will be screened and extracted by at least two independent reviewers. The methodological quality of the included studies will be independently assessed with a modified version of the Newcastle-Ottawa Scale (NOS). If deemed viable, a meta-analysis will be conducted using a random effects model. Heterogeneity of evidence will be estimated with the I2 statistic, and publication bias will be assessed. The effects of potential moderators (e.g. timing and severity of CM, age, sex, family cohesion, socio-economic status, country/region) will be analysed using meta-regression and subgroup analyses, and meta-analytical structural equation modelling will be employed to synthesise indirect mediation effects. Candidate moderators and mediators (e.g. genetic factors, brain functioning, attachment style, personality traits, physical activity, and social support) will be also examined qualitatively.Conclusions: This protocol will facilitate a systematic review and meta-analysis that has the potential to enhance our knowledge about the association between CM exposure in early life and resilience in adulthood. Understanding associations and underlying mechanisms between CM and resilience is potentially important in informing prevention and interventions to sustain health and improve outcomes among adults with a history of CM.PROSPERO registration: CRD42023394120.