The Impact of Different Types of Abuse on Depression

Unraveling the link between childhood maltreatment and depression: Insights from the role of ventral striatum and middle cingulate cortex in hedonic experience and emotion regulation

Childhood maltreatment is an established risk factor for psychopathology. However, it remains unclear how childhood traumatic events relate to mental health problems and how the brain is involved. This study examined the serial mediation effect of brain morphological alterations and emotion-/reward-related functions on linking the relationship from maltreatment to depression. We recruited 156 healthy adolescents and young adults and an additional sample of 31 adolescents with major depressive disorder for assessment of childhood maltreatment, depressive symptoms, cognitive reappraisal and anticipatory/consummatory pleasure. Structural MRI data were acquired to identify maltreatment-related cortical and subcortical morphological differences. The mediation models suggested that emotional maltreatment of abuse and neglect, was respectively associated with increased gray matter volume in the ventral striatum and greater thickness in the middle cingulate cortex. These structural alterations were further related to reduced anticipatory pleasure and disrupted cognitive reappraisal, which contributed to more severe depressive symptoms among healthy individuals. The above mediating effects were not replicated in our clinical group partly due to the small sample size. Preventative interventions can target emotional and reward systems to foster resilience and reduce the likelihood of future psychiatric disorders among individuals with a history of maltreatment.

The Role of Alexithymia and Moral Disengagement in Childhood Physical Abuse and Depressive Symptoms: A Comparative Study Among Rural and Urban Chinese College Students

Purpose

There is robust evidence indicating the adverse association between childhood abuse and depressive symptoms. However, the ways in which childhood physical abuse is indirectly associated with adulthood depressive symptoms by alexithymia and moral disengagement remain poorly understood, particularly in the context of China. The present study aims to investigate how childhood physical abuse may be associated with depressive symptoms via the serial mediation effects of alexithymia and moral disengagement among college students in China.

Methods

A total of 686 college students (female: 53.2%) aged from 17 to 28 years old (M = 21.33; SD = 2.53) were recruited from mainland China to participate in an online survey assessing the variables of interest. Structural equation modeling and multiple group analysis were performed using Mplus 7.0 to investigate the hypothesized model.

Results

College students' experiences with childhood physical abuse was significantly associated with their depressive symptoms. This relationship was partially mediated by alexithymia and then by moral disengagement. Meanwhile, alexithymia and moral disengagement had a chain mediating effect on childhood physical abuse and depressive symptoms. Furthermore, multigroup analysis revealed that the association between alexithymia and depressive symptoms was stronger among rural students compared to urban students. Furthermore, the mediation model involving moral disengagement applies exclusively to rural students.

Conclusion

Alexithymia and moral disengagement exerted serial mediating effect on the association between childhood physical abuse and depressive symptoms. This pattern was particularly pronounced among rural students. These findings underscore the importance of addressing both childhood adversity and maladaptive cognitive processes in the prevention and treatment of depression.

Childhood maltreatment and association with trajectories of depressive symptoms among older adults: a longitudinal study in China

OBJECTIVES

Childhood maltreatment has long-lasting effects on mental health. Existing evidence suggests that trajectories of depressive symptoms vary among individuals; however, little is known about how childhood maltreatment shapes these trajectory patterns. Therefore, this study investigated the impacts of childhood maltreatment on eight-year depressive trajectories among Chinese older adults.

METHOD

Five waves of longitudinal data from the China Health and Retirement Longitudinal Study were utilized. Growth Mixture Modelling was performed to identify distinct trajectories of depressive symptoms, and multinomial logistic regression was conducted to explore the associations between these trajectories and childhood maltreatment.

RESULTS

Four trajectories of depressive symptoms were identified: the 'no symptoms' class (61.83%), the 'increasing symptoms' class (14.49%), the 'decreasing symptoms' class (16.44%), and the 'chronic symptoms' class (7.24%). Older adults who experienced childhood physical abuse were more likely to be in the 'chronic symptoms' class than in the 'no symptoms' class, whereas emotional neglect did not show a significant association with three problematic trajectories.

CONCLUSION

This study provides empirical evidence that childhood physical abuse increases the likelihood of developing chronic depressive symptoms in later life. To mitigate this risk, it is crucial to institute comprehensive treatment plans that incorporate trauma-informed care principles, employ evidence-based therapies specifically designed to address the long-term effects of abuse, and prioritize regular screening and assessment of mental health among older adults.

Prevalence of harassment, abuse, and mental health among current and retired senior Swedish cheerleaders

This study examined the prevalence of non-accidental violence, focusing on experienced harassment and abuse (HA), and mental health among current and retired Swedish competitive cheerleaders. An online survey was distributed to current and retired athletes in the Swedish cheerleading federation. The survey assessed perceived coach-athlete relationship, sport psychological safety, resilience, mental health, and experienced HA within the cheerleading environment. A total of 284 athletes (men = 5; women = 278; gender not disclosed = 1; current athletes = 211; retired athletes = 73) completed the survey. Psychological abuse was the most frequently reported HA form (current athletes = 21.6%; retired athletes = 53.5%), followed by neglect (current athletes = 5.4%; retired athletes: 26.8%) and physical abuse (current athletes = 3.9%; retired athletes = 12.7%). A high-quality coach-athlete relationship was identified as a protective factor for HA. Additionally, 33.1% and 8.9% of participants displayed scores indicating anxiety and depression caseness, while 63.8% reported a high level of wellbeing. Anxiety/depression scores above clinical cut-off were linked to injury episodes and a high level of wellbeing to a mentally healthy environment. Resilience was found to protect mental health overall. The high occurrence of reported psychological abuse and indications of anxiety/depression related to injury episodes suggest a need of attention towards prevention and athlete protection strategies in cheerleading environments.

The mediator role of the feeling of personal unaccomplishment in the effect of unemployment anxiety on depression: a research on business faculty students in Türkiye

Background

This study aims to determine how the unemployment anxiety of university students affects their depression level. It also examines the mediating role of the feeling of personal unaccomplishment between these effects.

Methods

The data was analyzed using the PROCESS method. The research was conducted on 843 students attending different public or foundation (private) universities in Türkiye. Random sampling was used to select the participants.

Results

As a result of the analysis, it was determined that there is a positive, significant, moderate (R = 0.509, p < 0.01) relationship between unemployment anxiety and depression and a positive, significant and weak relationship between unemployment anxiety and feeling of personal unaccomplishment (R = 0.102, p < 0.01), there is a positive, significant, and weak (R = 0.184, p < 0.01) relationship between feeling of personal unaccomplishment and depression. Unemployment anxiety of university students had significant and positive effects on their depression level and significant and positive effects on feelings of personal unaccomplishment of students.

Conclusion

As a result of the mediating variable analysis, it was determined that the feeling of personal unaccomplishment has a partial mediator role in the relationship between unemployment anxiety and depression.

Did childhood adversity increase the vulnerability of university students to the negative mental health impact of the COVID-19 pandemic?

OBJECTIVE

To examine a potential synergistic effect of history of childhood adversity and COVID-19 pandemic exposure on the association with mental health concerns in undergraduate students. Participants: We used U-Flourish Survey data from 2019 (pre-pandemic) and 2020 (during-pandemic) first-year cohorts (n = 3,149) identified at entry to a major Canadian University.

METHODS

Interactions between childhood adversity (physical and sexual abuse, and peer bullying) and COVID-19 pandemic exposure regarding mental health concern (depressive and anxiety symptoms, suicidality, and non-suicidal self-harm) were examined on an additive scale.

RESULTS

We found a positive additive interaction between physical abuse and pandemic exposure in relation to suicidality (combined effect was greater than additive effect (risk difference 0.54 vs. 0.36)). Conversely, less than additive interactions between peer bullying and pandemic regarding depression and anxiety were observed.

CONCLUSIONS

Childhood adversities have diverse reactions to adult stressor depending on the nature of the childhood adversity and the mental health outcomes.

Short-term changes in mental health help-seeking behaviors following exposure to multiple social stressors and a natural disaster

In 2020, unprecedented circumstances led to significant mental health consequences. Individuals faced mental health stressors that extended beyond the devastating impact of the COVID-19 pandemic, including widespread social unrest following the murder of George Floyd, an intense hurricane season in the Atlantic, and the politically divisive 2020 election. The objective of this analysis was to consider changes in help-seeking behavior following exposure to multiple social stressors and a natural disaster. Data from Crisis Text Line (CTL), a national text-based mental health crisis counseling service, was used to determine how help-seeking behavior changed in the wake of each event. Wilcoxon rank sum tests assessed changes in help-seeking behavior for each event in 2020 as compared to the same period in 2019. AutoRegressive Integrated Moving Average (ARIMA) models examined if changes in crisis conversation volumes following each event differed. Higher median conversation volumes noted for the COVID-19 pandemic (+1 to +5 conversations), Hurricane Laura (+1 to +7 conversations) and the 2020 Election (+1 to +26 conversations). ARIMA models show substantial increases in help-seeking behavior following the declaration of a national emergency for the COVID-19 pandemic (+4.3 to +38.2%) and following the 2020 election (+3 to +24.44%). Our analysis found that the mental health response following social stressors may be distinct from natural events, especially when natural disasters occur in the context of multiple social stressors. This analysis adds to the growing body of literature considering the mental health impact of exposure to multiple co-occurring societal stressors, like police violence and a global pandemic.

To what extent do social support and coping strategies mediate the relation between childhood maltreatment and major depressive disorder: A longitudinal community-based cohort

This study aimed to articulate the roles of social support and coping strategies in the relation between childhood maltreatment (CM) and subsequent major depressive disorder (MDD) with a comprehensive exploration of potential factors in a longitudinal community-based cohort. Parallel and serial mediation analyses were applied to estimate the direct effect (DE) (from CM to MDD) and indirect effects (from CM to MDD through social support and coping strategies, simultaneously and sequentially). Sociodemographic characteristics and genetic predispositions of MDD were considered in the modeling process. A total of 902 participants were included in the analyses. CM was significantly associated with MDD (DE coefficient (β) = 0.015, 95% confidence interval (CI) = 0.002∼0.028). This relation was partially mediated by social support (indirect β = 0.004, 95% CI = 0.0001∼0.008) and negative coping (indirect β = 0.013, 95% CI = 0.008∼0.020), respectively. Social support, positive coping, and negative coping also influenced each other and collectively mediated the association between CM and MDD. This study provides robust evidence that although CM has a detrimental effect on later-on MDD, social support and coping strategies could be viable solutions to minimize the risk of MDD. Intervention and prevention programs should primarily focus on weakening negative coping strategies, then strengthening social support and positive coping strategies.

Nonlinear Moderation Effect of Vagal Regulation on the Link between Childhood Trauma and Adolescent Internalizing and Externalizing Symptoms

Childhood trauma is a leading early adverse environment that increases psychopathological symptoms. Respiratory sinus arrhythmia (RSA) suppression to challenges as a marker of self-regulation is found to linearly moderate the link between early adverse experiences and psychopathological symptoms, but yielding mixed findings. The present study examined the relationships between childhood trauma and internalizing and externalizing symptoms via a 1.5-year longitudinal design and the quadratic moderation effect of RSA suppression on these relationships among adolescents. In November 2021 (T1), the final sample of 275 Chinese adolescents (Mage = 12.94, SDage = 0.79; 49.82% females) completed the short form of Childhood Trauma Questionnaire and the Achenbach Youth Self-Report-2001 and underwent a speech task during which their baseline RSA and stress exposure RSA were obtained. In June 2023 (T2), 251 adolescents completed the Achenbach Youth Self-Report-2001. Results showed that childhood trauma at T1 was positively correlated with internalizing and externalizing symptoms at T1 and T2. RSA suppression to stress quadratically moderated these associations, such that adolescents with moderate rather than higher or lower RSA suppression had the least internalizing and externalizing symptoms at T1 and T2 when exposed to childhood trauma. The findings suggest that moderate RSA suppression to stress as a marker of optimal vagal regulation buffers the risk of developmental psychopathology from early adverse experiences.

Prevalence of childhood trauma in patients with psychiatric disorders and its association with perceived social support and suicide attempts: A cross-sectional observational study in a tertiary hospital in South India

Background

Adverse childhood experiences include exposure of children to physical abuse, physical neglect, emotional neglect, emotional abuse, and sexual abuse. Children exposed to severe maltreatment and trauma during their early childhood are at a higher risk of early onset of psychiatric disorders.

Aim

To find the prevalence of childhood adverse experiences in psychiatric patients and its association with perceived social support and suicidal attempts.

Materials and Methods

A cross-sectional observational study was conducted in the psychiatry outpatient department at a tertiary care hospital in Kerala. Patients with a diagnosis of substance use disorders, psychotic disorders, mood disorders, and neurotic disorders according to ICD-10 (F10-F45) and in remission were included in the study. Institutional Ethical Committee approval and informed consent from the participants were obtained. Socio-demographic and clinical details were obtained. Childhood Trauma Questionnaire-Short Form and Multidimensional scale of Perceived Social Support were administered. Descriptive statistics and Chi-square test were employed for data analysis.

Results

Eighty-five per cent of the subjects had a history of at least one type of childhood trauma. Emotional abuse was the most commonly reported type of trauma. Among patients with childhood trauma, 47.2% reported high levels of perceived social support, whereas 18.5% individuals reported a history of at least one suicide attempt.

Conclusions

A significant proportion of patients with psychiatric disorders in an Indian setting have experienced childhood trauma. Childhood trauma in psychiatric disorders is associated with a higher risk of attempting suicide.

Exploring gender differences in the relationships among childhood maltreatment, PTSD, and depression in young adults through network analysis

BACKGROUND AND OBJECTIVES

College students who have experienced childhood maltreatment commonly exhibit adverse psychological consequences such as post-traumatic stress disorder (PTSD) and depression. The aim of this study is to use network analysis to investigate the gender differences in complex connections among various types of childhood maltreatment, PTSD, and depression.

METHODS

This study involved 481 participants (M = 19.25 years, 54.5 % female) who were selected from a larger sample of 5231 college students. These participants had experienced childhood maltreatment and exhibited significant clinical symptoms of PTSD and depression. The participants completed validated measures that assessed childhood trauma, PTSD, and depression.

RESULTS

The network analysis performed on the entire sample revealed robust connections among various types of childhood maltreatment, symptom clusters of PTSD, and depression. The most central symptom that emerged was negative alterations in cognitions and mood (NACM), with emotional abuse displaying the highest centrality measure among the various types of childhood maltreatment. Upon comparing the subnetworks, the centrality analysis identified significant gender differences in nodes such as sexual abuse, physical neglect, emotional neglect, and avoidance.

CONCLUSIONS

The study's findings confirm that various forms of childhood abuse have intricate and multifaceted connections with depression and PTSD symptoms in adulthood. The study suggests that NACM could be the most significant symptom, and emotional abuse may play a vital role in adverse psychological outcomes. Furthermore, notable gender discrepancies were identified in the relationship between various forms of maltreatment and psychopathological symptoms.

Developing a Depression Care Model for the Hill Tribes: A Family- and Community-Based Participatory Research

A high prevalence of depression has been detected among individuals from the hill tribes in Thailand. However, there are no proper interventions to address this problem. Using a community-based participatory research (CBPR) design, the study team developed a model of depression care for this population. The study involved 45 people in the model development and 65 people in the model testing, who were patients, family members, village health volunteers (VHVs), community and religious leaders, healthcare personnel, NGOs, and local administrative staff. The model development was divided into three phases: understanding the current situation of depression and care, model development, and evaluation of its effectiveness using psychological and relevant outcomes. Questionnaires, observations, focus groups, and in-depth interviews were used for data collection, and content analysis was employed for qualitative data. The Wilcoxon signed-rank test was used to analyze changes in VHVs' knowledge and skills before and after training. The resulting model, "SMILE," consists of stakeholders' readiness (S), external and internal motivations (M), interpersonal relationship (I), life and community assets (L), and empowerment (E). VHVs underwent training on the model, and after training, their knowledge increased significantly from 3.50 ± 1.14 to 8.28 ± 0.81 (p < 0.001). Moreover, their basic counselling and depression screening skills showed improvement from 3.39 ± 1.23 to 7.64 ± 3.76 (p < 0.001). The developed model can be applied to other hill tribe communities in Northern Thailand to improve depression care.

Gender inequalities in violence victimization and depression in Brazil: results from the 2019 national health survey

BACKGROUND

Violence is a worldwide public health challenge and has been linked to depression in many settings. Depression is higher in women and differential exposure to violence is a potential risk factor - especially in countries with high-levels of violence. This paper provides a comprehensive characterization of the association between violence victimization and depression in Brazil, focusing on sex/gender inequalities.

METHODS

We used data from the 2019 wave of the National Health Survey (PNS) in Brazil to assess whether respondents had depression (using PHQ-9) and if they were victims of violence, differentiating by the type of violence, the frequency of victimization, and the primary aggressor. We used logit models to assess the association between victimization and the likelihood of having depression. We predicted probabilities of being depressed, considering the interaction between violence victimization and sex/gender, to analyze the differences between men and women.

RESULTS

Rates of violence victimization and depression were higher among women than among men. The odds of being depressed were 3.8 (95%CI: 3.5-4.2) times higher among victims of violence than among non-victims, and 2.3 (95%CI: 2.1-2.6) times higher among women than among men, adjusting for socioeconomic factors. For any given income level, racial/ethnic or age group, victims of violence who were women had the highest predicted probabilities of being depressed - e.g., 29.4% (95%CI: 26.1-32.8) for lower-income women, 28.9% (95%CI: 24.4-33.2) for black women, and 30.4% (95%CI: 25.4-35.4) for younger women that suffered violence. Over one in three women that suffered multiple types of violence, experienced violence more frequently, or where the aggressor was an intimate partner or another family member were predicted to have depression.

CONCLUSIONS

Being a victim of violence was strongly associated with higher risk of depression in Brazil, with women more likely to be both victims of violence and develop depression. Frequent, sexual, physical or psychological violence, and intimate partners or family member perpetrators were major risk factors for depression and should be a public health priority.

The associations among childhood trauma, loneliness, mental health symptoms, and indicators of social exclusion in adulthood: A UK Biobank study

AIMS

Childhood trauma has been associated with adult psychosocial outcomes linked to social exclusion. However, the strength of these associations in the general population is unknown. The emergence of the UK Biobank, with rich phenotypic characterization of the adult population, affords the exploration of the childhood determinants of adult psychopathology with greater statistical power. The current study aims to explore (1) the associations between childhood trauma and social exclusion in adulthood and (2) the role that self-reported loneliness and symptoms of distress play in the associations.

METHODS

This study was an analysis of 87,545 participants (mean [± SD] age = 55.68 [7.78], 55.0% female, 97.4% White) enrolled in the UK Biobank. Childhood trauma was determined by the five-item Childhood Trauma Screener. Current loneliness and symptoms of anxiety (Generalized Anxiety Disorder Scale-7) and depression (Patient Health Questionnaire-9) were also entered in analyses. Outcomes were "limited social participation," "area deprivation," "individual deprivation," and "social exclusion" from a previously determined dimensional measure of social exclusion in the UK Biobank.

RESULTS

Hierarchical multiple regression models indicated small associations between childhood trauma and social exclusion outcomes, explaining between 1.5% and 5.0% of the variance. Associations weakened but remained significant when loneliness, anxiety, and depression were entered in the models; however, anxiety symptoms demonstrated a negative association with "individual deprivation" and "social exclusion" in the final models. Depression was most strongly associated with "individual deprivation," "area deprivation," and "social exclusion" followed by childhood trauma. Loneliness was most strongly associated with "limited social participation."

CONCLUSIONS

Experiences of childhood trauma can increase the propensity for adulthood social exclusion. Loneliness and symptoms of depression attenuate but do not eliminate these associations. Anxiety symptoms have a potentially protective effect on the development of "individual deprivation." Findings add to the growing body of literature advocating for trauma-informed approaches in a variety of settings to help ameliorate the effects of childhood trauma on adult psychosocial outcomes. Further research, however, is required.

The association between abused adults and substance abuse in Taiwan, 2000-2015

OBJECTIVE

To investigate whether adults suffering from violence were at risk of substance abuse and provides insight into the relationship between male and female abusers and substance abuse from 2000 to 2015 in Taiwan.

METHODS

This study used data on outpatient, emergency, and inpatient visits for 2 million people enrolled in universal health insurance from 2000 to 2015. ICD-9 diagnosis codes 995.8 (abused adult) and E960-E969 (homicide and injury purposely inflicted by other persons) were defined in this case study, analyzing first-time violence in adults aged 18-64 (study group). Non-abused patients (control group) were matched in a 1:4 ratio, and the paired variables were gender, age (± 1 year), pre-exposure Charlson Comorbidity Index, and year of medical treatment. SAS 9.4 and Cox regression were used for data analysis.

RESULTS

A total of 8,726 people suffered violence (control group: 34,904 people) over 15 years. The prevalence of substance abuse among victims of violence was 78.3/10⁴, 61.9/10⁴, and 51.5/10⁴ for tobacco use disorder, alcoholism, and alcohol abuse, respectively. The risk (adults, overall) of drug abuse, drug dependence, and alcoholism after exposure to violence (average 9 years) was 7.47, 7.15, and 6.86 times (p < 0.01), respectively, compared with those without violence. The risk (adults, males) of drug abuse, drug dependence, and alcohol abuse after exposure to violence (average 9 years) was 6.85, 6.27, and 6.07 times, respectively, higher than those without violence (p < 0.01). Risks of drug dependence, alcohol abuse and alcoholism (adults, females) after exposure to violence (average 9 years) were 14.92, 12.26, and 11.55 times, respectively, higher than non-abused ones (p < 0.01).

CONCLUSION

The risks of substance abuse, after adult violence, are higher than in those who have not suffered violent injuries.

Prevalence and correlates of depressive symptoms among prisoners in Kaliti Federal Prison in Ethiopia: a facility based cross-sectional study

OBJECTIVE

This study intended to examine the prevalence and correlates of depressive symptoms among inmates in Kaliti Prison Centre, Addis Ababa, Ethiopia.

METHODS

A facility-based cross-sectional study was conducted among 694 randomly selected inmates in Kaliti Federal Prison in Ethiopia. The depressive symptom was examined using the Patient Health Questionnaire (PHQ-9). A binary logistic regression model was fitted to identify correlates of depressive symptoms. A p value <0.05 was considered to declare statistical significance, and an adjusted OR (AOR) with the corresponding 95% CI was computed to determine the strength of association. Data were analysed using SPSS V.20.

RESULT

The prevalence of depressive symptoms among prisoners in the current study was 56.6% (95% CI 53.2 to 60.8). Poor social support (AOR: 3.33, 95% CI 2.03 to 5.458), personal history of mental illness (AOR=3.16, 95% CI 1.62 to 6.14), physical abuse (AOR=2.31, 95% CI 1.41 to 3.78) and comorbid chronic medical illness (AOR=3.47, 95% CI 2.09 to 5.74) were independent correlates of depressive symptoms.

CONCLUSION

Our study shows that around one in two prisoners screened positive for depressive symptoms. There should be a regular screening of depressive symptoms for prisoners, and those screened positive should be linked to proper psychiatric service for early diagnosis and treatment.

Interpersonal violence and depression in Brazil: A cross-sectional analysis of the 2019 National Health Survey

Depression and interpersonal violence are issues of increasing public health concern globally, especially in low-and-middle income countries. Despite the known relationship between interpersonal violence and an increased risk of depression, there is a need to further characterise the experience of depression in those who have experienced violence, to better develop screening and treatment interventions. A cross-sectional analysis was conducted on responses from the 2019 Brazilian National Health Survey. The prevalence of depression (both clinician-diagnosed, and Patient Health Questionnaire (PHQ-9) screened) were estimated by type of violence experienced in the preceding 12 months (none, physical violence, sexual violence, physical and sexual violence, or threat of violence). Logistic regression models assessed the associations between violence and depression after adjusting for socioeconomic and demographic factors. Of 88,531 respondents, 8.1% experienced any type of violence. Compared to those not experiencing violence, those who experienced any type of violence had a higher prevalence of clinician-diagnosed or PHQ-9-screened depression (e.g. the prevalence of clinician-diagnosed depression was 18.8% for those experiencing sexual violence compared to 9.5% for those not experiencing violence). Both undiagnosed and untreated depression were also more prevalent in those experiencing any type of violence. In logistic regression models, any experience of violence was associated with a higher odds of depression (e.g. aOR = 3.75 (95% CI: 3.06-4.59) for PHQ-9-detected depression). Experiencing violence was also associated with a higher likelihood of having depression which was undiagnosed (e.g. in those who experienced sexual violence: aOR of 3.20, 95% CI 1.81-5.67) or untreated (e.g. in those who experienced physical and sexual violence: aOR = 8.06, 95% CI 3.44-18.9). These findings highlight the need to consider screening for depression in those affected by violence, and to prioritise mental healthcare in communities affected by violence.

Perinatal depression is associated with a higher polygenic risk for major depressive disorder than non-perinatal depression

BACKGROUND

Distinctions between major depressive disorder (MDD) and perinatal depression (PND) reflect varying views of PND, from a unique etiological subtype of MDD to an MDD episode that happens to coincide with childbirth. This case-control study investigated genetic differences between PND and MDD outside the perinatal period (non-perinatal depression or NPD).

METHODS

We conducted a genome-wide association study using PND cases (Edinburgh Postnatal Depression Scale score ≥ 13) from the Australian Genetics of Depression Study 2018 data (n = 3804) and screened controls (n = 6134). Results of gene-set enrichment analysis were compared with those of women with non-PND. For six psychiatric disorders/traits, genetic correlations with PND were evaluated, and logistic regression analysis reported polygenic score (PGS) association with both PND and NPD.

RESULTS

Genes differentially expressed in ovarian tissue were significantly enriched (stdBeta = 0.07, p = 3.3e-04), but were not found to be associated with NPD. The genetic correlation between PND and MDD was 0.93 (SE = 0.07; p = 3.5e-38). Compared with controls, PGS for MDD are higher for PND cases (odds ratio [OR] = 1.8, confidence interval [CI] = [1.7-1.8], p = 9.5e-140) than for NPD cases (OR = 1.6, CI = [1.5-1.7], p = 1.2e-49). Highest risk is for those reporting both antenatal and postnatal depression, irrespective of prior MDD history.

CONCLUSIONS

PND has a high genetic overlap with MDD, but points of distinction focus on differential expression in ovarian tissue and higher MDD PGS, particularly for women experiencing both antenatal and postpartum PND.

Bullying, Psychological, and Physical Trauma During Early Life Increase Risk of Major Depressive Disorder in Adulthood: A Nationwide Community Sample of Korean Adults

BACKGROUND

There is an association between early life traumas and the development of depression in adults. Few studies have used nationwide population-based samples to investigate whether the type of early life trauma differentially influences the risk of developing depression.

METHODS

Major depressive disorder and early life trauma were assessed using the Korean version of the Composite International Diagnostic Interview (K-CIDI) for DSM-IV psychiatric disorder and a questionnaire for early life trauma in the Korean Epidemiological Catchment Area Study in 2016. A total of 4,652 participants were included in the final analysis. This study evaluated the effect of the type and frequency of reported early life trauma on the risk of developing MDD and the association between reported early life trauma and differential symptoms of MDD.

RESULTS

Individuals with reported early life trauma had a 3.7-fold increased risk of MDD. The risk of MDD was associated with bullying trauma (odds ratio (OR) = 1.847, p = 0.005) after adjusting for age, gender, marriage, job, and education years. The risk of MDD was increased as the types of reported early life traumas increased.

CONCLUSION

Bullying trauma during early life represents a risk factor for MDD, especially in individuals exposed to multiple traumas in early life.