Life events in a prepubertal and early adolescent bipolar disorder phenotype compared to attention-deficit hyperactive and normal controls

Research Status in Clinical Practice Regarding Pediatric and Adolescent Bipolar Disorders

Bipolar disorders (BDs) have high morbidity. The first onset of 27.7% of BDs occurs in children under 13 years and of 37.6% occurs in adolescents between 13 and 18 years. However, not all of the pediatric and adolescent patients with BD receive therapy in time. Therefore, studies about pediatric and adolescent patients with disorders have aroused increased attention in the scientific community. Pediatric and adolescent patients with BD present with a high prevalence rate (0.9-3.9%), and the pathogenic factors are mostly due to genetics and the environment; however, the pathological mechanisms remain unclear. Pediatric and adolescent patients with BD manifest differently from adults with BDs and the use of scales can be helpful for diagnosis and treatment evaluation. Pediatric and adolescent patients with BDs have been confirmed to have a high comorbidity rate with many other kinds of disorders. Both medication and psychological therapies have been shown to be safe and efficient methods for the treatment of BD. This review summarizes the research status related to the epidemiology, pathogenic factors, clinical manifestations, comorbidities, diagnostic and treatment scales, medications, and psychological therapies associated with BDs.

The Effect of Traumatic Events on the Longitudinal Course and Outcomes of Youth with Bipolar Disorder

BACKGROUND

Exposure to severe Traumatic Events (TEs) has been associated with poor course and outcomes among individuals with Bipolar Disorder (BD). However, there is limited research on TEs among youth with BD, and few studies are longitudinal. This study prospectively followed a large sample of BD youth, examining the associations of lifetime TEs with their mood and functioning.

METHODS

BD participants (n=375; mean age=17; range 8-25y) were assessed, on average, every 7 months for a median 8.7 years. Psychopathology and lifetime trauma history were prospectively evaluated using the Longitudinal Interval Follow-Up Evaluation, and a traumatic events screening.

RESULTS

Accounting for covariates, participants with one or more lifetime TEs (84%) showed earlier BD onset, poorer psychosocial functioning, worse mood symptoms, and more suicidal ideation, comorbidities, and family psychopathology than those without TEs. TEs during recovery periods increased recurrence risk (p<0.02). More TEs were associated with poorer mood course, particularly among victims of violence/abuse (p<0.02). Abused participants (34% physical; 17% sexual) showed earlier onset of substance use disorders, more suicidality and comorbidities compared to those without abuse. Comparisons of mood course before and after abuse occurred, and with participants without abuse, showed worsening mood symptoms after, specifically hypo/mania (p<0.03).

LIMITATIONS

Prospective data was gathered longitudinally but assessed retrospectively at every follow-up; given approximate dates causality cannot be inferred; TEs severity was not assessed.

CONCLUSIONS

Severe TEs, particularly abuse, were associated with poorer course and outcomes among BD youth. Prompt screening of trauma and early intervention may be warranted to minimize TEs impact.

The burdened life of adults with ADHD: Impairment beyond comorbidity

Since approximately 70% of adult patients with attention-deficit/hyperactivity disorder (ADHD) have at least one comorbid disorder, rating of impairment specifically attributable to ADHD is a hard task. Despite the evidence linking environmental adversities with negative outcomes in ADHD, life events measures have not been used to rate the disorder impairment. The present study tested for the first time the hypothesis that increased ADHD severity is associated with an increase in negative recent life events, independently of comorbidity status. The psychiatric diagnoses of 211 adult ADHD outpatients were based on DSM-IV criteria assessed through structured interviews (K-SADS-E for ADHD and ODD, MINI for ASPD and SCID-IV-R for other comorbidities). ADHD severity was evaluated with the Swanson, Nolan and Pelham rating scale (SNAP-IV) and recent life events with the Life Experience Survey. Higher SNAP-IV inattention and hyperactivity scores, female gender, lower socioeconomic status and the presence of comorbid mood disorders were associated with negative life events. Poisson regression models with adjustment for possible confounders confirmed the effect of inattention and hyperactivity severity on negative life events. Our results suggest that the negative life events experienced by these patients are associated to the severity of ADHD independently from comorbid psychiatric disorders.

Childhood adverse life events and parental psychopathology as risk factors for bipolar disorder

Childhood adverse events are risk factors for later bipolar disorder. We quantified the risks for a later diagnosis of bipolar disorder after exposure to adverse life events in children with and without parental psychopathology. This register-based population cohort study included all persons born in Denmark from 1980 to 1998 (980 554 persons). Adversities before age 15 years were: familial disruption; parental somatic illness; any parental psychopathology; parental labour market exclusion; parental imprisonment; placement in out-of-home care; and parental natural and unnatural death. We calculated risk estimates of each of these eight life events as single exposure and risk estimates for exposure to multiple life events. Main outcome variable was a diagnosis of bipolar disorder after the age of 15 years, analysed with Cox proportional hazard regression. Single exposure to most of the investigated adversities were associated with increased risk for bipolar disorder, exceptions were parental somatic illness and parental natural death. By far the strongest risk factor for bipolar disorder in our study was any mental disorder in the parent (hazard ratio 3.53; 95% confidence interval 2.73-4.53) and the additional effects of life events on bipolar risk were limited. An effect of early adverse life events on bipolar risk later in life was mainly observed in children without parental psychopathology. Our findings do not exclude early-life events as possible risk factors, but challenge the concept of adversities as important independent determinants of bipolar disorder in genetically vulnerable individuals.

The association of Internet addiction symptoms with impulsiveness, loneliness, novelty seeking and behavioral inhibition system among adults with attention-deficit/hyperactivity disorder (ADHD)

The aims of this study were to test the associations of the Internet addiction symptoms with impulsiveness, loneliness, novelty seeking and behavioral inhibition systems among adults with attention-deficit/hyperactivity disorder (ADHD) and adults with non-ADHD. A total of 146 adults aged between 19 and 33 years involved in this study. Participants were assessed with the Chinese version of the adult ADHD Self-report scale (ASRS), the Revised Chen Internet Addiction Scale (CIAS-R), the Barratt Impulsiveness Scale 11 (BIS-11), the Tridimensional Personality Questionnaire (TPQ), the UCLA loneliness scale, and the Behavioral Inhibition System and Behavioral Activation System Scale (BIS/BAS Scale). The results of hierarchical regression analysis indicated that impulsiveness, loneliness, and behavioral inhibition system were significant predictors of Internet addition among adults with ADHD. Higher loneliness was significantly associated with more severe Internet addition symptoms among the non-ADHD group. Adults with high impulsiveness, loneliness, and BIS should be treated with caution for preventing Internet addiction. In addition, adults with and without ADHD should be provided with different preventative strategies.

The role of adverse life events on depression in older adults with ADHD

BACKGROUND

Comorbidity between Attention-Deficit/Hyperactivity Disorder (ADHD) and depression is high, also in older adults. Thus far it is not well understood why ADHD and depression are so strongly interrelated. One factor that may play a role in older adults with ADHD is an increased risk of experiencing adverse life events.

METHODS

Six year follow-up data were used from the Longitudinal Aging Study Amsterdam (LASA). To diagnose ADHD, the DIVA 2.0, a diagnostic interview was administered among a subsample (N=230, age 60-94). In addition to the ADHD diagnosis, the associations between the number of ADHD symptoms, depressive symptoms and adverse life events were examined. Data were analyzed by means of logistic and linear regression analyses.

RESULTS

Compared to older adults without ADHD, those with ADHD reported more serious conflicts. The risk of depression in older adults with ADHD was partly explained by serious conflicts. Furthermore, the association between ADHD severity and depression was stronger in those who experienced serious conflicts and those who experienced more adverse life events.

LIMITATIONS

The ADHD diagnosis was based on the DSM-IV criteria, which were developed for children, and have not yet been validated in (older) adults.

CONCLUSIONS

Having conflicts with others and accumulation of adverse life events over time partly explained the association between ADHD and depression. Better and earlier treatment of ADHD may prevent the development of depression in the presence of life events associated with ADHD.

Contributions of the social environment to first-onset and recurrent mania

In treated cohorts, individuals with bipolar disorder are more likely to report childhood adversities and recent stressors than individuals without bipolar disorder; similarly, in registry-based studies, childhood adversities are more common among individuals who later become hospitalized for bipolar disorder. Because these types of studies rely on treatment-seeking samples or hospital diagnoses, they leave unresolved the question of whether or not social experiences are involved in the etiology of bipolar disorder. We investigated the role of childhood adversities and adulthood stressors in liability for bipolar disorder using data from the National Epidemiologic Survey on Alcohol and Related Conditions (n=33 375). We analyzed risk for initial-onset and recurrent DSM-IV (Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition) manic episodes during the study's 3-year follow-up period. Childhood physical abuse and sexual maltreatment were associated with significantly higher risks of both first-onset mania (odds ratio (OR) for abuse: 2.23; 95% confidence interval (CI)=1.71, 2.91; OR for maltreatment: 2.10; CI=1.55, 2.83) and recurrent mania (OR for abuse: 1.55; CI=1.00, 2.40; OR for maltreatment: 1.60; CI=1.00, 2.55). In addition, past-year stressors in the domains of interpersonal instability and financial hardship were associated with a significantly higher risk of incident and recurrent mania. Exposure to childhood adversity potentiated the effects of recent stressors on adult mania. Our findings demonstrate a role of social experiences in the initial onset of bipolar disorder, as well as in its prospective course, and are consistent with etiologic models of bipolar disorder that implicate deficits in developmentally established stress-response pathways.

Life events in bipolar patients: a comparative study with siblings and healthy controls

BACKGROUND

While many studies have focused on life events in depressive disorders, data regarding them in bipolar disorder are scant. The aim of this work was to explore the characteristics of life events in bipolar patients.

METHODS

Sixty bipolar patients have been included in our study. The evaluation focused on the sociodemographic and clinical characteristics with a standardized measurement of life events using Paykel's interview. The results were compared with those of siblings and healthy controls groups. The three groups were matched for age and sex.

RESULTS

Compared to the controls, bipolar patients and their siblings had a higher global score of life events and more events in the fields of work, socio-family events and health. Bipolar patients reported more desirable events compared with their siblings and controls. The siblings reported higher scores of uncontrollable and undesirable events than patients and controls, and a higher score of controllable events than patients.

LIMITATIONS

The Paykel's interview has no validated Tunisian version, which could be a methodological bias in the assessment of life events. Moreover, the assessment of the life events was made during the euthymic phase of the bipolar disorder; however, there was no standardized measure of mood symptoms, to confirm this euthymia.

CONCLUSION

Our findings could help in the identification of the etiopathogeny of bipolar disorder and would contribute to improve the understanding and management of these patients focusing on the psychosocial aspect which is often overlooked.

Does comorbid depression predict subsequent adverse life events in youth with attention-deficit/hyperactivity disorders?

OBJECTIVES

Studies have primarily focused on adverse life events (ALEs) as potential causes rather than as outcomes of pediatric depression. The current study prospectively examines ALEs in a sample of youth with attention-deficit/hyperactivity disorders (ADHD) to determine whether having a major depressive disorder (MDD) at baseline (T1) predicts counts of child-dependent or child-independent ALEs at a second assessment (T2) ≈ 8 months later.

METHODS

Subjects with ADHD 11-18 years old were drawn mostly from a tertiary mental health clinic and evaluated with semi-structured diagnostic interviews, and parent and teacher questionnaires of ADHD severity. Eighteen with and 61 without initial MDD at T1 were compared at T2 regarding counts of subsequent overall, child-dependent, and child-independent ALEs reported on life events questionnaires by the child or parent.

RESULTS

The group initially with MDD had higher overall ALEs (p=0.01) and child-dependent ALEs (p ≤ 0.001) but not child-independent ALEs (p=0.12) at T2 relative to the nondepressed group, although only 3 of 18 continued to meet full criteria for MDD. The group initially with MDD also had a higher baseline ADHD severity (p=0.04) and proportion of oppositional or conduct disorders (p=0.004). In multivariate analyses, the group initially having MDD had a higher adjusted mean at T2 of child-dependent ALEs (p=0.02), but not of overall ALEs (p=0.06), after controlling for other T1 variables, including ALEs of the same type, ADHD severity, externalizing disorders, and the interaction of externalizing disorders with MDD.

CONCLUSIONS

These findings suggest that child-dependent ALEs are potentially an important outcome after youth with ADHD have an episode of MDD. Youth with ADHD who develop comorbid MDD should be closely monitored and offered interventions to address the potential burden of child-dependent ALEs lingering after a depressive episode.

Severe affective and behavioural dysregulation is associated with significant psychosocial adversity and impairment

BACKGROUND

Recently, a highly heritable behavioral phenotype of simultaneous deviance on the Anxious/Depressed, Attention Problems, and Aggressive Behavior syndrome scales has been identified on the Child Behavior Checklist (CBCL-Dysregulation Profile, CBCL-DP). This study aims to investigate psychosocial adversity and impairment of the CBCL-DP.

METHODS

A total of 9024 patients aged 4-18 years were assessed using the CBCL, and the axes V and VI of ICD-10.

RESULTS

ANOVA revealed significant differences regarding psychosocial adversity and impairment between patients with CBCL-DP phenotype and the clinical control group, patients with attention problems, and patients with attention problems and additional anxious/depressed symptoms as assessed by the CBCL. Patients with CBCL-DP showed significant psychosocial adversity and impairment. However, in most cases patients with aggressive behavior showed equal psychosocial adversity as patients with CBCL-DP.

CONCLUSIONS

Findings suggest the CBCL-DP phenotype to be associated with significant psychosocial adversity and impairment either as a cause or an effect of the syndrome. Clinicians should carefully address psychosocial adversity and impairment with particular attention to the adversity and impairment of adolescents with CBCL-DP.

Negative life events in children and adolescents with bipolar disorder

OBJECTIVE

To study the relationship between negative life events and demographic and clinical variables in youth with bipolar I disorder, bipolar II disorder, and bipolar disorder not otherwise specified (NOS), as well as to compare the rates of life events in youth with bipolar disorder, depressive and/or anxiety disorders (DEP-ANX), and healthy controls.

METHOD

Subjects included 446 youth, aged 7 to 17 years, meeting DSM-IV criteria for bipolar I, bipolar II, or an operationalized definition of bipolar disorder NOS, and were enrolled in the Course and Outcome of Bipolar Illness in Youth study. Subjects completed the Life Events Checklist. Sixty-five DEP-ANX and 65 healthy youth were obtained from previous studies using similar methodology. The study was conducted from October 2000 to July 2006.

RESULTS

Older age, lower socioeconomic status, living with nonintact family, non-Caucasian race, anxiety, and disruptive disorders were associated with greater number of total negative life events. Specifically, increased independent, dependent, and uncertain negative life events were associated with lower socioeconomic status, nonintact family, and comorbid disruptive disorders. Increased independent negative life events were additionally associated with non-Caucasian race and comorbid anxiety disorders. Increased dependent and uncertain negative life events were also associated with older age. DEP-ANX youth reported a similar rate of negative life events as bipolar youth, and both groups had more negative life events than the healthy controls. Bipolar youth reported fewer total and dependent positive life events compared to DEP-ANX and healthy youths.

CONCLUSIONS

Similar to DEP-ANX youth, bipolar youth are exposed to excessive negative independent and dependent life events, which may have implications in the long-term outcome and negative consequences associated with this disorder.

Drug Use and Psychosocial Functioning of a Community Derived Sample of Adolescents with Childhood ADHD

We describe the late adolescent psychosocial outcomes from a relatively large, community-identified sample of children with ADHD who have been assessed longitudinally from childhood through late adolescence. A range of outcomes were compared between ADHD (n=119) and normal control (n=93) groups, as well as ADHD subgroups that varied as a function of the course of externalizing, predominantly ODD, problems (persisters, desisters, escalators, and resisters). ADHD youth that did not show externalizing problems during childhood (ADHD-resisters) were associated with drug use outcomes generally comparable to the normal non-affected controls. All other ADHD groups with externalizing problems (ADHD-persisters, ADHD-escalaters, and ADHD-desisters) consistently revealed worse drug use outcomes compared to controls/ADHD-resisters. However, ADHD youth with or without externalizing problems showed worse outcomes compared to the control group on the non-drug, psychosocial functioning variables. The study highlights that ADHD with co-existing disruptiveness, whether the disruptiveness persists or remits before adolescence, is associated with an increased risk for drug involvement and that ADHD, regardless of the comorbid pattern, confers a poorer level of psychosocial functioning.

Effects of age, sex, and independent life events on amygdala and nucleus accumbens volumes in child bipolar I disorder

BACKGROUND

Relationships between environment and cortical-limbic-striatal pathways are not well-researched in child bipolar I disorder (BP-I).

METHODS

This was a controlled, blindly rated magnetic resonance imaging study of children with DSM-IV BP-I, manic or mixed type, compared with matched typically developing children (TC).

RESULTS

There were 47 subjects (21 BP-I, 26 TC) aged 14.0+/-3.1 (BP-I onset age 8.8+/-4.2). Total intracranial volume was greater in male subjects (n=28) versus female subjects (n=19) [F(1,44)=24.3, p< .001], controlling for age. Volumes were not significantly different in BP-I and TC groups, after accounting for multiple comparisons, in the medial orbital frontal cortex, rostral anterior cingulate cortex, hippocampus, amygdala (AMG), or nucleus accumbens (NAcc). Across subjects (n=47), a greater number of independent life events (ILE) was associated with smaller AMG [F(1,36)=7.8, p= .009] and NAcc [F(1,36) = 9.4, p= .004] volumes, controlling for total intracranial volume (TICV), group, age, sex, and family psychopathology. Use of stimulant medication at the time of the scan was associated with larger AMG volume [F(1,41)=9.0, p= .005], controlling for TICV, group, age, and sex. In male subjects, the age x group interaction was a significant predictor in general linear models of AMG (p= .028) and NAcc (p= .030) volumes. Effects of low maternal warmth were not significant.

CONCLUSIONS

Findings suggest that ILE affect AMG and NAcc volume, but further research is needed to examine specificity to child BP-I. Furthermore, differential age x group (child BP-I vs. TC) effects only in male subjects are consistent with differential brain development by sex.

AACAP 2006 Research Forum--Advancing research in early-onset bipolar disorder: barriers and suggestions

OBJECTIVE

The 2006 Research Forum addressed the goal of formulating a research agenda for early-onset bipolar disorder (EOBP) and improving outcome by understanding the risk and protective factors that contribute to its severity and chronicity.

METHOD

Five work groups outlined barriers and research gaps in EOBP genetics, neuroimaging, prodromes, psychosocial factors, and pharmacotherapy.

RESULTS

There was agreement that the lack of consensus on the definition and diagnosis of EOBP is the primary barrier to advancing research in BP in children and adolescents. Related issues included: the difficulties in managing co-morbidity both statistically and clinically; acquiring adequate sample sizes to study the genetics, biology, and treatment; understanding the EOBP's developmental aspects; and identifying environmental mediators and moderators of risk and protection. Similarly, both psychosocial and medication treatment strategies for children with BP are hamstrung by diagnostic issues. To advance the research in EOBP, both training and funding mechanisms need to be developed with these issues in mind.

CONCLUSIONS

EOBP constitutes a significant public health concern. Barriers are significant but identifiable and thus are not insurmountable. To advance the understanding of EOBP, the field must be committed to resolving diagnostic and assessment issues. Once achieved, with adequate personnel and funding resources, research into the field of EOBP will doubtless be advanced at a rapid pace.

Prevention of bipolar disorder in at-risk children: theoretical assumptions and empirical foundations

This article examines how bipolar symptoms emerge during development, and the potential role of psychosocial and pharmacological interventions in the prevention of the onset of the disorder. Early signs of bipolarity can be observed among children of bipolar parents and often take the form of subsyndromal presentations (e.g., mood lability, episodic elation or irritability, depression, inattention, and psychosocial impairment). However, many of these early presentations are diagnostically nonspecific. The few studies that have followed at-risk youth into adulthood find developmental discontinuities from childhood to adulthood. Biological markers (e.g., amygdalar volume) may ultimately increase our accuracy in identifying children who later develop bipolar I disorder, but few such markers have been identified. Stress, in the form of childhood adversity or highly conflictual families, is not a diagnostically specific causal agent but does place genetically and biologically vulnerable individuals at risk for a more pernicious course of illness. A preventative family-focused treatment for children with (a) at least one first-degree relative with bipolar disorder and (b) subsyndromal signs of bipolar disorder is described. This model attempts to address the multiple interactions of psychosocial and biological risk factors in the onset and course of bipolar disorder.

Life stress and the course of early-onset bipolar disorder

BACKGROUND

Studies of adult bipolar patients and adolescents with major depression indicate that life stress and mood symptoms are temporally and causally related to one another. This study examined whether levels of life stress predict levels of mood symptoms among bipolar adolescents participating in a treatment development study of family-focused psychoeducation and pharmacotherapy.

METHODS

Bipolar adolescents (n=38) who reported a period of acute mood symptoms within the prior 3 months were recruited for a 1-year study of life stress. Clinician-administered evaluations were completed with adolescents and parents at 3-month intervals for up to 12 months, using the UCLA Life Stress Interview and the K-SADS Mania and Depression Rating Scales.

RESULTS

Chronic stress in family, romantic and peer relationships was associated with less improvement in mood symptoms over the study year. The frequency of severe, independent life events also predicted less improvement in mood symptoms. Higher levels of chronic stress in family and romantic relationships, and higher severity of independent events, were more strongly associated with mood symptoms among older adolescents. Results were independent of adolescents' psychosocial treatment regimens.

LIMITATIONS

The majority of adolescents received family-focused psychoeducational treatment and all were being treated with psychotropic medication. The influence of life stress on mood symptoms may have been attenuated by intensive intervention.

CONCLUSIONS

Stress is linked to changes in mood symptoms among bipolar adolescents, although correlations between life events and symptoms vary with age. Chronic stress in family, romantic, and peer relationships are important targets for psychosocial intervention.

Life events and juvenile bipolar disorder: conceptual issues and early findings

There is increasing interest in the psychosocial variables that might predict the course of child and adolescent bipolar disorder. In the literature on adult bipolar disorder, life events have been shown to be a major predictor of symptoms. In this review, we focus on studies of how life events influence the course of child and adolescent bipolar disorder. To begin, we review methodological considerations in life events research, and briefly summarize the findings regarding life events in adult bipolar disorder. Then, we discuss available studies on life events as a predictor of the course of juvenile bipolar disorder. We conclude with suggested directions for future research.

Controlled study of switching from attention-deficit/hyperactivity disorder to a prepubertal and early adolescent bipolar I disorder phenotype during 6-year prospective follow-up: Rate, risk, and predictors

Rate, risk, and predictors of switching from attention-deficit/hyperactivity disorder (ADHD) to a prepubertal and early adolescent bipolar I disorder phenotype (PEA-BP-I) were examined in a blindly rated, controlled, prospective 6-year follow-up that included assessments at 2-year intervals. Subjects were outpatients obtained by consecutive new case ascertainment. There were 81 subjects who were 9.7 +/- 2.0 years. Subjects had DSM-IV ADHD (hyperactive or combined subtypes); a Children's Global Assessment Scale (CGAS) score of < or =60, consistent with moderate-severe impairment; and no BP or major depressive disorder (MDD) diagnoses. PEA-BP-I was defined as DSM-IV BP I (manic or mixed phase), with cardinal symptoms (elation and/or grandiosity), to avoid diagnosing mania by symptoms that overlapped with those of ADHD, and by a CGAS score of < or =60. Morbid risk of switching to PEA-BP-I was 28.5%. Significant predictors of switching in a multivariate Cox model were more severe baseline CGAS, paternal recurrent MDD, and less stimulant use. BP I in first-degree relatives, antidepressants, psychosocial measures, and life events were not predictive.

Pilot sample of very early onset bipolar disorder in a military population moderates the association of negative life events and non-fatal suicide attempt

OBJECTIVE

To examine the moderating effects of very early onset diagnostic status (<or= 13 years) upon the association between life events and non-fatal suicide attempt.

METHODS

Measures of negative life events, suicidal ideation and current suicide attempt were administered to 298 military-based young adults at entry to treatment for suicidality. Current and lifetime diagnoses were assigned using the Diagnostic Interview Schedule. The predictive ability of negative life events for non-fatal suicide attempt was examined separately for the total sample and for those with retrospectively determined histories of very early onset bipolar disorder (VEOBPD; n = 16), very early onset major depressive disorder (VEOMDD; n = 21) and very early onset anxiety disorder (VEOANX; n = 53).

RESULTS

Negative life events and suicide attempt were significantly and positively associated among those with no history of VEOBPD (OR = 1.30, 95% CI = 1.02-1.65, p < 0.05), including those with VEOMDD and VEOANX. Consistent with expectation, VEOBPD moderated the association between negative life events and suicide attempt (OR = 0.88, 95% CI = 0.78-0.99, p < 0.05), such that negative life events were non-significantly and negatively associated with the presence of a suicide attempt (OR = 0.21, 95% CI = 0.04-1.02, p = 0.09) among patients with a history of VEOBPD.

CONCLUSIONS

Despite similar rates of suicide attempt among all diagnostic groups, life stress did not contribute to attempt among those with VEOBPD. These findings are consistent with the severity and chronicity of VEOBPD. Potential explanations of these findings include a scarring effect on coping skills and increased sensitization to life stress.

The DBH −1021 C/T polymorphism is not associated with alcoholism but possibly with patients’ exposure to life events

Two DBH polymorphisms were investigated in 114 Brazilian alcoholics of European descent and 233 controls. Personality and life events were also analyzed among alcoholics. No significant differences were observed in allele or genotype frequencies between alcoholics and controls. No association was detected between the polymorphisms and personality dimensions. Carriers of the -1021 T allele presented a higher number (F = 7.49; P = 0.007) of life events. This study provides a preliminary indication that the DBH -1021 C/T polymorphism influences the exposure to life events.

Adverse life events and pediatric bipolar disorder in a community mental health setting

OBJECTIVE

To determine the frequency and effects of exposure to adverse events in pediatric bipolar disorder.

METHOD

Charts of youths with bipolar disorder were retrospectively reviewed.

RESULTS

Thirty-five of 66 (53%) had experienced maltreatment. Most (90.9%) had divorced or separated parents and 31.8% were adopted or in foster care. Exposure to adverse events was associated with delay of diagnosis (p = .010), psychiatric hospitalization (p = .035), residential treatment (p = .003) and a decreased response to treatment (p = .006).

CONCLUSIONS

Exposure to adverse events may be common among pediatric bipolar patients and have a negative impact on prognosis.