Mood disorders in childhood and adolescence

Shared and distinct white matter abnormalities in adolescent-onset schizophrenia and adolescent-onset psychotic bipolar disorder

BACKGROUND

While adolescent-onset schizophrenia (ADO-SCZ) and adolescent-onset bipolar disorder with psychosis (psychotic ADO-BPD) present a more severe clinical course than their adult forms, their pathophysiology is poorly understood. Here, we study potentially state- and trait-related white matter diffusion-weighted magnetic resonance imaging (dMRI) abnormalities along the adolescent-onset psychosis continuum to address this need.

METHODS

Forty-eight individuals with ADO-SCZ (20 female/28 male), 15 individuals with psychotic ADO-BPD (7 female/8 male), and 35 healthy controls (HCs, 18 female/17 male) underwent dMRI and clinical assessments. Maps of extracellular free-water (FW) and fractional anisotropy of cellular tissue (FAT) were compared between individuals with psychosis and HCs using tract-based spatial statistics and FSL's Randomise. FAT and FW values were extracted, averaged across all voxels that demonstrated group differences, and then utilized to test for the influence of age, medication, age of onset, duration of illness, symptom severity, and intelligence.

RESULTS

Individuals with adolescent-onset psychosis exhibited pronounced FW and FAT abnormalities compared to HCs. FAT reductions were spatially more widespread in ADO-SCZ. FW increases, however, were only present in psychotic ADO-BPD. In HCs, but not in individuals with adolescent-onset psychosis, FAT was positively related to age.

CONCLUSIONS

We observe evidence for cellular (FAT) and extracellular (FW) white matter abnormalities in adolescent-onset psychosis. Although cellular white matter abnormalities were more prominent in ADO-SCZ, such alterations may reflect a shared trait, i.e. neurodevelopmental pathology, present across the psychosis spectrum. Extracellular abnormalities were evident in psychotic ADO-BPD, potentially indicating a more dynamic, state-dependent brain reaction to psychosis.

Estresse, desesperança e expectativas de futuro na adolescência em alunos do ensino médio

O presente artigo investigou a associação dos níveis de estresse, desesperança e expectativas de futuro em uma amostra de 295 adolescentes, alunos do ensino médio de uma rede educacional particular confessional (sendo 127 meninos (43,1%) e 168 meninas (56,9%); com idades entre 14 e 18 anos (M = 15,90; SD = 1,21), na região metropolitana de Belém, no estado Pará. Os instrumentos utilizados foram: questionário sociodemográfico, Escala de Stress para Adolescentes (ESA), Escala BECK de Desesperança (BHS) e questionário sobre expectativas futuras. Por meio de técnicas estatísticas para análise dos dados, observou-se que as meninas estavam mais estressadas que os meninos e que adolescentes com moderado estresse apresentaram alto nível de desesperança. Também se verificou que adolescentes com altos níveis de estresse apresentaram baixa ou muito baixa expectativa de ser respeitado na comunidade e concluir o ensino médio. Esse estudo sugere que o estresse pode comprometer as expectativas de futuro e o bem-estar do adolescente.

[This elusive unknown quantity: reflections on the prescription of psychotropic drugs in early childhood]

The scope of this article is to study aspects related to prescription habits and the use of psychoactive drugs in early childhood. It takes as a starting point the bibliographical survey carried out on the BVS and Scielo databases on epidemiological and clinical research in Brazil regarding the use of psychotropic drugs in children under six years of age. Based on international literature, it highlights the increase in the number of children diagnosed with mental and behavioral disorders, as well as the respective prescription of psychotropic drugs. It discusses the predominantly off-label character of psychoactive drugs for children under six years of age, the heterogeneous use of prescriptions and polypharmacology, pointing to an ethical paradox regarding clinical research in this age group. It concludes that the use of psychotropic drugs in early childhood is as yet not well known in Brazil, and epidemiological studies are urgently needed in this area.

The latent structure of depression symptoms and suicidal thoughts in Brazilian youths

BACKGROUND

Many studies have investigated the existence of discrete groups comprising the clinical concept of depression. Nevertheless, identifying true latent depression groups might require the inclusion of indicators of severe manifestations of depression, such as suicidal thoughts, in the analysis. Another issue is that relatively few studies have addressed the latent structure of depression in children and adolescents from Latin American cultures.

METHODS

In the present study, we combined latent profile and taxometric analysis to investigate the latent structure underlying depression symptoms (negative emotionality and low positive emotionality indicators) and suicidal thoughts in four aggregated Brazilian youth samples (total N = 2587; mean age = 12.86 years; SD = 2.60; 50.8% females).

RESULTS

Latent profile analysis indicated five classes that clearly represented distinct levels on a continuum of depression. However, taxometric results were ambiguous with regard to highlighting depression as a purely dimensional or categorical latent entity (mean CCFI = 0.497).

LIMITATIONS

The use of few indicators from a single instrument, the potential heterogeneity in the clinical group, and the non-random nature of the samples included in the study.

CONCLUSION

The mixed findings support the existence of a dimension of depression, as well as latent classes of individuals. Factor mixture models are discussed as a strategy for further exploring the nature of depression among young people.

Effect size of lithium, carbamazepine, and sodium valproate in child and adolescent bipolar 1 disorder during manic phase: A prospective open-label study

AIM

The aim was to evaluate the "effect size (ES)," tolerability, and acceptability of lithium, carbamazepine, and sodium valproate in the acute phase treatment of pediatric Bipolar 1 disorder patients during manic phase.

MATERIALS AND METHODS

This hospital-based, prospective, open-label study included 67 patients in manic phase of bipolar I disorder, aged 6-17 years, after informed consent by the caregivers. The patients were randomly assigned to the lithium group (n = 30), carbamazepine group (n = 20), and sodium valproate group (n = 17). They were assessed with the Schedule for Affective Disorders for School Age Children's-Present and Life time version administered to the parent and child separately, Conner's Abbreviated Rating Scale, and Cassidy Scale for Manic States (CSMS). Lithium was started in the dose of 30 mg per kg of body weight, carbamazepine in the dose of 10-20 mg/kg/day, and sodium valproate in the dose of 10-20 mg/kg body weight. Antipsychotic (chlorpromazine [CPZ] 100-500 mg per day or haloperidol up to 750 mg of CPZ equivalent) was allowed in the study. Injection haloperidol 10 mg and injection promethazine 50 mg intramuscular were allowed for initial 3-5 days to combat acute agitation. Rescue medication such as injection lorazepam 2-4 mg intramuscular was allowed throughout the study duration. The patients were rated weekly on CSMS, Bipolar Clinical Global Impression, Udvalg for kliniske Undersogelser Side Effect Rating Scale, and side effect checklist for lithium, sodium valproate, and carbamazepine, respectively. The serum level of concerned drug was obtained at weekly intervals and dose hiked, if needed to get target serum level.

RESULTS

The response rate was 90% in lithium group, 70% in carbamazepine group, and 88% in sodium valproate group on the basis of ≥33% reduction from baseline CSMS. The effects of change of CSMS over the 6 weeks across the three treatment group were found to be highly statistically significant.

CONCLUSIONS

In the acute phase treatment of pediatric bipolar 1 disorder patients during manic phase, the ES for lithium was 0.85, for carbamazepine 0.71, and for sodium valproate 0.84. These agents are well tolerated in treating bipolar disorder in children.

Depression Anxiety and Stress Scale (DASS-21) - Short Form: Adaptação e Validação para Adolescentes Brasileiros

Resumo Este estudo teve como objetivo adaptar e validar a Depression Anxiety and Stress Scale (DASS-21) - Short Form para adolescentes brasileiros. Participaram do estudo 426 adolescentes de 12 a 18 anos (M = 14,91; DP = 1,66), sendo 264 meninas (62%) e 162 meninos (39%), de escolas públicas da cidade de Porto Alegre-RS, que responderam a uma versão adaptada, nomeada Escala de Depressão, Ansiedade e Estresse para Adolescentes (EDAE-A). As subescalas demonstraram níveis adequados de consistência interna, variando entre 0,83 e 0,90. A análise fatorial confirmatória indicou que o melhor modelo foi o de três fatores, confirmando o modelo original com as dimensões depressão, ansiedade e estresse. No escore total e por fatores, houve diferença por sexo, com maior média entre as meninas em todos os escores. Conclui-se que a EDAE-A apresenta qualidades psicométricas favoráveis, mostrando-se um simples e adequado instrumento de levantamento de sintomas de depressão, ansiedade e estresse para adolescentes brasileiros.

Using neuroimaging to evaluate and guide pharmacological and psychotherapeutic treatments for mood disorders in children

Mood disorders are increasing in childhood, and often require multimodal and comprehensive treatment plans to address a complex array of symptoms and associated morbidities. Pharmacotherapy, in combination with psychotherapeutic interventions, is essential for treatment and stabilization. Current evidence supports the use of a number of interventions in children and adolescents diagnosed with DSM-5 mood spectrum disorders, which are associated with impairments in prefrontal-striatal-limbic networks, which are key for emotional functioning and regulation. Yet, little is known about the neurobiological effects of interventions on the developing brain. This chapter provides a synopsis of the literature demonstrating the neural effects of psychotropic medications and psychotherapy in youth with depressive or bipolar spectrum disorders. Additional longitudinal and biological studies are warranted to characterize the effects of these interventions on all phases and stages of mood illness development in children and adolescents.

Vitamin D3 Supplemental Treatment for Mania in Youth with Bipolar Spectrum Disorders

OBJECTIVE

We aimed to determine the effect of an open-label 8 week Vitamin D3 supplementation on manic symptoms, anterior cingulate cortex (ACC) glutamate, and γ-aminobutyric acid (GABA) in youth exhibiting symptoms of mania; that is, patients with bipolar spectrum disorders (BSD). We hypothesized that an 8 week Vitamin D3 supplementation would improve symptoms of mania, decrease ACC glutamate, and increase ACC GABA in BSD patients. Single time point metabolite levels were also evaluated in typically developing children (TD).

METHODS

The BSD group included patients not only diagnosed with BD but also those exhibiting bipolar symptomology, including BD not otherwise specified (BD-NOS) and subthreshold mood ratings (Young Mania Rating Scale [YMRS] ≥8 and Clinical Global Impressions - Severity [CGI-S] ≥3). Inclusion criteria were: male or female participants, 6-17 years old. Sixteen youth with BSD exhibiting manic symptoms and 19 TD were included. BSD patients were asked to a take daily dose (2000 IU) of Vitamin D3 (for 8 weeks) as a supplement. Neuroimaging data were acquired in both groups at baseline, and also for the BSD group at the end of 8 week Vitamin D3 supplementation.

RESULTS

Baseline ACC GABA/creatine (Cr) was lower in BSD than in TD (F[1,31]=8.91, p=0.007). Following an 8 week Vitamin D3 supplementation, in BSD patients, there was a significant decrease in YMRS scores (t=-3.66, p=0.002, df=15) and Children's Depression Rating Scale (CDRS) scores (t=-2.93, p=0.01, df=15); and a significant increase in ACC GABA (t=3.18, p=0.007, df=14).

CONCLUSIONS

Following an 8 week open label trial with Vitamin D3, BSD patients exhibited improvement in their mood symptoms in conjunction with their brain neurochemistry.

Bipolar disorder prevalence: a systematic review and meta-analysis of the literature

OBJECTIVE

Bipolar disorder (BD) is common in clinical psychiatric practice, and several studies have estimated its prevalence to range from 0.5 to 5% in community-based samples. However, no systematic review and meta-analysis of the prevalence of BD type 1 and type 2 has been published in the literature. We carried out a systematic review and meta-analysis of the lifetime and 1-year prevalence of BD type 1 and type 2 and assessed whether the prevalence of BD changed according to the diagnostic criteria adopted (DSM-III, DSM-III-R vs. DSM-IV).

METHODS

We searched MEDLINE, Scopus, Web of Science, PsycINFO, and the reference lists of identified studies. The analyses included 25 population- or community-based studies and 276,221 participants.

RESULTS

The pooled lifetime prevalence of BD type 1 was 1.06% (95% confidence interval [95%CI] 0.81-1.31) and that of BD type 2 was 1.57% (95%CI 1.15-1.99). The pooled 1-year prevalence was 0.71% (95%CI 0.56-0.86) for BD type 1 and 0.50% (95%CI 0.35-0.64) for BD type 2. Subgroup analysis showed a significantly higher lifetime prevalence of BD type 1 according to the DSM-IV criteria compared to the DSM-III and DSM-IIIR criteria (p < 0.001).

CONCLUSION

This meta-analysis confirms that estimates of BD type 1 and type 2 prevalence are low in the general population. The increase in prevalence from DSM-III and DSM-III-R to DSM-IV may reflect different factors, such as minor changes in diagnostic operationalization, use of different assessment instruments, or even a genuine increase in the prevalence of BD.

Distinguishing bipolar disorder from other psychiatric disorders in children

Pediatric onset bipolar disorder (BD) is a challenging diagnosis with potentially debilitating outcomes. This review aims to critically evaluate recently published literature relevant to the diagnosis of BD in youth, emphasizing interesting and important new findings characterizing pediatric BD and reporting updates in the diagnostic and statistical manual relevant to this disorder in youth. Challenges regarding the diagnosis of BD will be discussed, in addition to important distinctions with other childhood disorders, including other bipolar spectrum disorders; major depressive disorder; dysthymia; disruptive mood dysregulation disorder (DMDD); attention-deficit/hyperactivity disorder (ADHD) and other disruptive behavioral disorders; anxiety disorders, including post-traumatic stress disorder (PTSD); psychotic disorders; autism spectrum disorders; substance use disorders; and borderline personality disorder. The review concludes with a comment on past research limitations and future directions in the field.