The influence of childhood trauma on the treatment outcomes of pharmacological and/or psychological interventions for adolescents and adults with bipolar disorder: A systematic review and meta-analysis

Early life adversities, psychopathologies and novel pharmacological strategies

Exposure to adversities during early life stages (early life adversities - ELA), ranging from pregnancy to adolescence, represents a major risk factor for the vulnerability to mental disorders. Hence, it is important to understand the molecular and functional underpinning of such relationship, in order to develop strategies aimed at reducing the psychopathologic burden associated with ELA, which may eventually lead to a significant improvement in clinical practice. In this review, we will initially recapitulate clinical and preclinical evidence supporting the link between ELA and psychopathology and we will primarily discuss the main biological mechanisms that have been described as potential mediators of the effects of ELA on the psychopathologic risk, including the role for genetic factors as well as sex differences. The knowledge emerging from these studies may be instrumental for the development of novel therapeutic strategies aimed not only at correcting the deficits that emerge from ELA exposure, but also in preventing the manifestation of a full-blown psychopathologic condition. With this respect, we will specifically focus on adolescence as a key time frame for disease onset as well as for early therapeutic intervention. We believe that incorporating clinical and preclinical research data in the context of early life adversities can be instrumental to elucidate the mechanisms contributing to the risk for psychopathology or that may promote resilience. This will ultimately allow the identification of 'at risk' individuals who may benefit from specific forms of interventions that, by interfering with disease trajectories, could result in more benign clinical outcomes.

Type of cycle, temperament and childhood trauma are associated with lithium response in patients with bipolar disorders

BACKGROUND

Lithium stands as the gold standard in treating bipolar disorders (BD). Despite numerous clinical factors being associated with a favorable response to lithium, comprehensive studies examining the collective influence of clinical variables alongside psychopathological dimensions are lacking. Our study aims to enhance comprehension of lithium response in individuals with BD by integrating clinical variables with psychopathological traits and early adverse events.

METHODS

We assessed 201 patients with BD for clinical characteristics, childhood trauma, temperament traits, impulsivity, and aggression. Lithium response was evaluated using the gold standard Alda scale, and predictors of lithium response were estimated through a multivariate model.

RESULTS

On the total sample, 61 (30.3%) patients were lithium responders according to the Alda scale. Comparatively, lithium responders, in contrast to non-responders, demonstrated a higher prevalence of the mania-depression-interval (MDI) cycle, a more frequent diagnosis of BD type I, and reported an earlier age of onset. They also exhibited less lifetime substance abuse, emotional, physical, and sexual abuse, while scoring higher on hyperthymic and irritable temperament scales. In multivariate analyses, only the MDI cycle (OR,3.47; 95%CI,1.61-7.50) hyperthymic (OR,1.20; 95%CI,1.02-1.41) and irritable temperament (OR,1.28; 95%CI,1.08-1.52) persisted as significant predictors of a positive response to lithium treatment, while emotional (OR,0.87; 95%CI,0.76-0.98) and physical abuse (OR,0.83; 95%CI,0.70-0.98) were predictors of non-response.

CONCLUSIONS

In evaluating lithium response in BD, our study highlights the importance of considering clinical variables alongside temperament and childhood adversities. The assessment of hyperthymic and irritable temperament, emotional and physical abuse together with the type of cycle is of particular importance. Furthermore, our findings underscore the significance of systematically assessing the type of cycle in patients with BD through the use of life charts.

How effective are mood stabilizers in treating bipolar patients comorbid with cPTSD? Results from an observational study

BACKGROUND

Multiple traumatic experiences, particularly in childhood, may predict and be a risk factor for the development of complex post-traumatic stress disorder (cPTSD). Unfortunately, individuals with bipolar disorder (BP) are more likely to have suffered traumatic events than the general population. Consequently, cPTSD could be comorbid with BD, and this may negatively affect psychopathological manifestations. To date, no one has explored whether such comorbidity also affects the response to treatment with mood stabilizers in BD patients.

RESULTS

Here, a cross-sectional study was carried out by comparing the response to treatment, measured by the Alda scale, in a cohort of 344 patients diagnosed with BD type I and II, screened for the presence (or absence) of cPTSD using the International Trauma Questionnaire. The main result that emerged from the present study is the poorer response to mood stabilizers in BD patients with comorbid cPTSD compared with BD patients without cPTSD.

CONCLUSIONS

The results collected suggest the need for an add-on therapy focused on trauma in BD patients. This could represent an area of future interest in clinical research, capable of leading to more precise and quicker diagnoses as well as suggesting better tailored and more effective treatments.

Prospective, comparative, pilot study of maintenance treatment in comorbid bipolar disorders with post-traumatic stress disorder

There is limited real-world evidence that evaluates the impact of monotherapy vs. combination therapy as a maintenance treatment in comorbid post-traumatic stress disorder (PTSD) in bipolar disorder (BD). Our aim was to compare lithium vs. lithium plus quetiapine in maintenance treatment in a sample of comorbid BD with PTSD. An exploratory, comparative pilot study over a 28-week period in 34 comorbid BD with PTSD patients was performed to compare monotherapy (n = 18) vs. combination therapy (n = 16) during maintenance treatment. The primary outcome was the time to event of recurrence of any mood episode. The secondary outcomes were regarding change from the baseline to endpoint in the Montgomery-Asberg Depression Rating Scale (MADRS) and Young Mania Rating Scale (YMRS). A Cox regression, Kaplan-Meir survival, and mixed-effects model for repeated measures analyses were performed. Lithium plus quetiapine reduces the risk of recurrence of any mood episode. There are significant differences between baseline and endpoint for YMRS, MADRS, and CGI-BP scales in the sample. In this pilot, exploratory analysis, combination therapy during maintenance treatment for comorbid BD with PTSD may be effective in preventing recurrences of any type of mood episode.

Childhood Trauma and Self-harm in Youths with Bipolar Disorders

BACKGROUND

Bipolar disorders (BD) in youth are associated with a high risk of self-harm behaviors. Childhood trauma (CT) is a relevant environmental stressor that is related to both BD diagnosis and self-harm in adulthood. It is not yet established whether CT may impact self-harm risk in youth. Therefore, the aim of this study was to investigate the distribution patterns of CT in youth BD with and without self-harm.

METHODS

We assessed 273 participants (aged 13-25 years), 96 youths with BD according to DSM-5 criteria and 177 healthy controls (HC). History of CT was obtained using the Childhood Trauma Questionnaire (CTQ). The association between CT and self-harm was tested using multivariate statistical models.

RESULTS

Over 45% of participants with BD reported lifetime self-harm. The BD Self-harm group reported more emotional abuse, emotional neglect, sexual abuse, and physical abuse than HC. The BD No-Self-harm group reported more emotional abuse than HC. The BD Self-harm group reported more emotional abuse and neglect than the BD No-Self-harm group. The BD Self-harm group also reported separated parents, hospitalizations, smoking, use of antiepileptics, antipsychotics and lithium. Emotional abuse was an independent predictor of self-harm in youths with BD.

CONCLUSION

Findings support the importance of assessing CT, in particular emotional abuse, in youth with BD at risk for self-harm.

Early sexual or physical abuse in female and male mood disorder patients

Early abuse has been associated with psychiatric morbidity but comparisons of bipolar (BD) and major depressive (MDD) disorder subjects with versus without early sexual or physical abuse are rare. Patients (n = 684) diagnosed with a DSM-5-TR major mood disorder were evaluated and followed for several years at mood disorder centers to compare details of history and clinical status in participants with versus without early sexual or physical abuse. Early history of sexual (16.2%) or physical abuse (11.9%) was prevalent; 5.15% reported both. Both types of abuse were much more prevalent with BD than MDD. Sexual abuse was associated with younger illness-onset and somewhat younger menarche in females; both abuse-types were associated with familial mood disorders, especially BD. Prospective, long-term illness episode-frequency, depressions or [hypo]manias/year and %-time [hypo]manic all were greater following sexual abuse but morbidity measures did not differ following physical abuse. Prevalence of suicidal behavior ranked: double (48.5%) > physical (32.1%) > sexual (30.3%) abuse, and with BD > MDD (OR = 2.31). Recall bias and not using psychometric instruments to define abuse severity or type may limit interpretation of findings. Early sexual (more than physical) abuse, led to greater morbidity and both abuses were strongly associated with familial mood disorders and greater suicidal risk, especially with double-abuse and BD diagnosis. We support a bilateral relationship between abuse and diagnosis of BD: abuse may facilitate early appearance of BD but also may result from the actions of abusive BD family members.

Childhood trauma and its influence on the clinical features of bipolar disorder

BACKGROUND

Childhood trauma is an environmental risk factor for bipolar disorder (BD), But its influence on the clinical features of BD has not been examined sufficiently.

OBJECTIVE

We compared the childhood trauma between patients with BD and healthy controls (HCs) and determined how childhood trauma impacts clinical features, such as severity, mood episodes, and disease duration.

PARTICIPANTS AND SETTING

The study population comprised patients with BD (in a state of euthymia or depression, n = 90) and HCs (n = 94).

METHODS

The Structured Clinical Interview for DSM-IV Axis I Disorders was used to diagnose BD and ascertain its clinical features. The Childhood Trauma Questionnaire (CTQ) was used to assess childhood trauma.

RESULTS

The total CTQ score and scores for the CTQ subscales emotional abuse, sexual abuse, emotional neglect, and physical neglect, significantly differed between the BD and HC groups. Emotional abuse was correlated with higher Hamilton Anxiety Rating Scale (HARS) score and more frequent mood episodes; emotional neglect was correlated with higher HARS score, longer disease duration, and more mood episodes; and total CTQ score was positively correlated with HARS score, disease duration, and mood episodes. Regression analysis showed that emotional neglect significantly predicted HARS score, Hamilton Depression Rating Scale score, and disease duration in the BD group (P < 0.05).

CONCLUSIONS

Patients with BD have more serious childhood trauma. General childhood trauma, emotional abuse, and emotional neglect negatively affect the clinical features of BD.