Examining differences in brain metabolism associated with childhood maltreatment and suicidal attempts in euthymic patients with bipolar disorder: a PET and machine learning study

Objective: Childhood maltreatment (CM) is a significant risk factor for the development and severity of bipolar disorder (BD) with increased risk of suicide attempts (SA). This study evaluated whether a machine learning algorithm could be trained to predict if a patient with BD has a history of CM or previous SA based on brain metabolism measured by positron emission tomography. Methods: Thirty-six euthymic patients diagnosed with BD type I, with and without a history of CM were assessed using the Childhood Trauma Questionnaire. Suicide attempts were assessed through the Mini International Neuropsychiatric Interview (MINI-Plus) and a semi-structured interview. Resting-state positron emission tomography with 18F-fluorodeoxyglucose was conducted, electing only grey matter voxels through the Statistical Parametric Mapping toolbox. Imaging analysis was performed using a supervised machine learning approach following Gaussian Process Classification. Results: Patients were divided into 18 participants with a history of CM and 18 participants without it, along with 18 individuals with previous SA and 18 individuals without such history. The predictions for CM and SA were not significant (accuracy = 41.67%; p = 0.879). Conclusion: Further investigation is needed to improve the accuracy of machine learning, as its predictive qualities could potentially be highly useful in determining histories and possible outcomes of high-risk psychiatric patients.

Challenges and potential solutions for physician suicide risk factors in the COVID-19 era: psychiatric comorbidities, judicialization of medicine, and burnout

Abstract Introduction Suicide among physicians constitutes a public health problem that deserves more consideration. A recently performed meta-analysis and systematic review evaluated suicide mortality in physicians by gender and investigated several related risk factors. It showed that the post-1980 suicide mortality was 46% higher in female physicians than among women in the general population, while the risk in male physicians was 33% lower than among men in general, despite an overall contraction in physician mortality rates in both genders. Methods This narrative review was conducted by searching and analyzing articles/databases that were relevant to addressing questions raised by a prior meta-analysis and how they might be affected by COVID-19. This process included unstructured searches on Pubmed for physician suicide, burnout, judicialization of medicine, healthcare organizations, and COVID-19, and Google searches for relevant databases and medical society, expert, and media commentaries on these topics. We focus on three factors critical to addressing physician suicides: epidemiological data limitations, psychiatric comorbidities, and professional overload. Results We found relevant articles on suicide reporting, physician mental health, the effects of healthcare judicialization, and organizational involvement on physician and patient health, and how COVID-19 may impact such factors. This review addresses information sources, underreporting/misreporting of physician suicide rates, inadequate diagnosis and management of psychiatric comorbidities and the chronic effects on physicians' work capacity, and, finally, judicialization of medicine and organizational failures increasing physician burnout. We discuss these factors in general and in relation to the COVID-19 pandemic. Conclusions We present an overview of the above factors, discuss possible solutions, and specifically address how COVID-19 may impact such factors.

Physician suicide demographics and the COVID-19 pandemic

Objective: To identify suicide rates and how they relate to demographic factors (sex, race and ethnicity, age, location) among physicians compared to the general population when aggravated by the coronavirus disease 2019 (COVID-19) pandemic. Methods: We searched U.S. databases to report global suicide rates and proportionate mortality ratios (PMRs) among U.S. physicians (and non-physicians in health occupations) using National Occupational Mortality Surveillance (NOMS) data and using Wide-ranging Online Data for Epidemiologic Research (WONDER) in the general population. We also reviewed the effects of age, suicide methods and locations, COVID-19 considerations, and potential solutions to current challenges. Results: Between NOMS1 (1985-1998) and NOMS2 (1999-2013), the PMRs for suicide increased in White male physicians (1.77 to 2.03) and Black male physicians (2.50 to 4.24) but decreased in White female physicians (2.66 to 2.42). Conclusions: The interaction of non-modifiable risk factors, such as sex, race and ethnicity, age, education level/healthcare career, and location, require further investigation. Addressing systemic and organizational problems and personal resilience training are highly recommended, particularly during the additional strain from the COVID-19 pandemic.

Appraising the effectiveness of electrical and magnetic brain stimulation techniques in acute major depressive episodes: an umbrella review of meta-analyses of randomized controlled trials

Electrical and magnetic brain stimulation techniques present distinct mechanisms and efficacy in the acute treatment of depression. This was an umbrella review of meta-analyses of randomized controlled trials of brain stimulation techniques for managing acute major depressive episodes. A systematic review was performed in the PubMed/MEDLINE databases from inception until March 2020. We included the English language meta-analysis with the most randomized controlled trials on the effects of any brain stimulation technique vs. control in adults with an acute depressive episode. Continuous and dichotomous outcomes were assessed. A Measurement Tool to Assess Systematic Reviews-2 was applied and the credibility of evidence was assessed using the Grading of Recommendations Assessment, Development and Evaluation framework. Seven meta-analyses were included (5,615 patients), providing evidence for different modalities of brain stimulation techniques. Three meta-analyses were evaluated as having high methodological quality, three as moderate, and one as low. The highest quality of evidence was found for high frequency-repetitive transcranial magnetic stimulation (rTMS), transcranial direct current stimulation, and bilateral rTMS. There is strong clinical research evidence to guide future clinical use of some techniques. Our results confirm the heterogeneity of the effects across these techniques, indicating that different mechanisms of action lead to different efficacy profiles.

Childhood-maltreatment subtypes in bipolar patients with suicidal behavior: systematic review and meta-analysis

Objective: Patients with bipolar disorders have a high risk of suicidal behavior. Childhood maltreatment is a well-established risk factor for suicidal behavior. The objective of this study was to examine the association between childhood-maltreatment subtypes and vulnerability to suicide attempts in bipolar disorder using the Childhood Trauma Questionnaire (CTQ). Methods: A literature review was performed using the MEDLINE, Embase, and PsycINFO databases. Thirteen studies met the selection criteria. In the meta-analysis, the Childhood Trauma Questionnaire (CTQ) was used to assess a wide range of childhood maltreatment subtypes, which were analyzed by using a random-effects model to account for the likely variations of true effect sizes between the included studies. Results: In the systematic review, 13 studies met the selection criteria. The CTQ was selected for the meta-analysis to increase the homogeneity of assessment and to encompass a wide range of childhood-maltreatment subtypes. The data were analyzed using a random-effects model. Compared to bipolar non-attempters, bipolar suicide attempters had experienced childhood maltreatment with a significantly higher frequency and had higher total CTQ scores (Hedges' g = -0.38, 95%CI -0.52 to -0.24, z = -5.27, p < 0.001) and CTQ sub-scores (sexual abuse: g = -0.39, 95%CI -0.52 to -0.26, z = -5.97; physical abuse: g = -0.26, 95%CI -0.39 to -0.13, z = -4.00; emotional abuse: g = -0.39, 95%CI -0.65 to -0.13, z = -2.97; physical neglect: g = -0.18, 95%CI -0.31 to -0.05, z = -2.79; emotional neglect: g = -0.27, 95%CI -0.43 to -0.11, z = -3.32). Conclusions: Childhood maltreatment, as assessed by the CTQ, may contribute to an increased risk of suicidal behavior among people with bipolar disorders. Recognizing maltreatment as an etiological risk factor is a crucial step toward furthering science-based preventive psychiatry.

Depression and quality of life in individuals with Stargardts disease / Depressão e qualidade de vida em indivíduos com doença de Stargardt

ABSTRACT Objectives To assess depression and quality of life in individuals with Stargardt's disease (SD), macular dystrophy whose central vision loss begins in the first decades of life. Methods This observational, cross-sectional study included 41 SD patients and 46 healthy controls, aged 18 to 63 years old, in Minas Gerais, Brazil. Major depression episode was assessed by the Mini International Neuropsychiatric Interview, depressive symptomatology by the Beck Depression Inventory (BDI) and Hamilton Depression Scale (HAM-D) and quality of life by the National Eye Institute Visual Function Questionnaire. The comparison between sociodemographic variables, quality of life and depression was performed using Fisher's exact test and Mann-Whitney-Wilcoxon test. Results The prevalence of depression was 12.2% in the sample with SD while in the control group was 8.7% (p = 0.614). No significant differences were observed between patients and the control group regarding the prevalence of depression and sociodemographic variables. Patients with SD had overall lower quality of life scores (59.7 vs. 88.7, p < 0.001), and presented inverse correlation between depressive symptoms, as assessed by BDI (Rho = -0.49, p < 0.001) and by HAM-D (Rho = -0.45, p = 0.003) with quality of life scores. Conclusion Depressive symptoms were the major factors affecting quality of life, regardless of sociodemographic data. Individuals with SD may develop copying strategies, seek mental care to prevent the increase of depression and decrease of quality of life.

RESUMO Objetivos Avaliar a depressão e a qualidade de vida em indivíduos com doença de Stargardt (DS), distrofia macular cuja perda de visão central se inicia nas primeiras décadas de vida. Métodos Este estudo observacional e transversal incluiu 41 pacientes com DS e 46 controles saudáveis, com idades entre 18 e 63 anos, em Minas Gerais, Brasil. Episódio de depressão maior foi avaliado pelo Mini Internacional Neuropsychiatric Interview (MINI)-PLUS, a sintomatologia depressiva, pelo Inventário de Depressão de Beck (BDI) e pela Escala de Depressão de Hamilton (HAM-D) e a qualidade de vida, pelo Questionário de Função Visual do Instituto de Olhos Nacional versão de 25 itens (NEI VFQ-25). A comparação entre as variáveis sociodemográficas, a qualidade de vida e a depressão foi realizada por meio do teste exato de Fisher e o teste de Mann-Whitney-Wilcoxon. Resultados A prevalência de depressão foi de 12,2% na amostra com indivíduos com DS, enquanto no grupo controle foi de 8,7% (p = 0,614). Não foram observadas diferenças significativas entre os pacientes e o grupo controle quanto à prevalência de depressão e às variáveis sociodemográficas. Os pacientes com DS apresentaram menor pontuação geral de qualidade de vida (59,7 vs. 88,7, p < 0,001), cujas variáveis com correlação inversa e estatisticamente significante (p < 0,05) foram as de sintomatologia depressiva, avaliadas pelo BDI ( Rho = -0,49, p < 0,001) e pelo HAM-D ( Rho = -0,45, p = 0,003). Conclusão Os sintomas depressivos foram os principais fatores que afetaram a qualidade de vida, independentemente dos dados sociodemográficos. Indivíduos com DS podem desenvolver estratégias de enfrentamento e procurar assistência mental para evitar o aumento da depressão e a diminuição da qualidade de vida.

Neural correlates of hallucinations in bipolar disorder

Objective: Approximately one-half of all patients affected by bipolar disorder present with psychotic features on at least one occasion. Several studies have found that alterations in the activity of mesolimbic and prefrontal regions are related to aberrant salience in psychotic patients. The aim of the present study was to investigate the structural correlates of a history of hallucinations in a sample of euthymic patients with bipolar I disorder (BD-I). Methods: The sample consisted of 21 euthymic patients with BD-I and no comorbid axis I DSM-IV-TR disorders. Voxel based morphometry (VBM) was used to compare patients with and without a lifetime history of hallucinations. Preprocessing was performed using the Diffeomorphic Anatomical Registration through Exponentiated Lie Algebra (DARTEL) algorithm for VBM in SPM8. Images were processed using optimized VBM. Results: The main finding of the present study was a reduction in gray matter volume in the right posterior insular cortex of patients with BD-I and a lifetime history of hallucinations, as compared to subjects with the same diagnosis but no history of hallucinations. Conclusions: This finding supports the presence of abnormalities in the salience network in BD patients with a lifetime history of hallucinations. These alterations may be associated with an aberrant assignment of salience to the elements of one’s own experience, which could result in psychotic symptoms.

Associação entre trauma infantil, transtornos psiquiátricos e suicídio / Association between childhood trauma, psychiatric disorders and suicide

Algumas evidências da literatura sugerem associação entre traumas infantis e comportamento suicida. Motivados pela questão, "os pacientes psiquiátricos população com transtornos psiquiátricos que sofreram traumas na infância suicidam mais?" O objetivo foi realizar revisão sistemática sobre o impacto de traumas infantis nos pacientes com transtornos psiquiá- tricos e sua correspondência com ideação e tentativas de suicídio. A pesquisa foi realizada por uma busca on-line no Medline, com tempo delimitado em cinco anos até a presente data, com artigos publicados em língua inglesa. Os termos de busca foram: "Child Abuse" [Mesh] AND "Mental Disorders"[Mesh]) AND "Suicide"[Mesh]. A pesquisa considerou os traumas como variável independente, transtornos psiquiátricos como variável dependente e independente e o suicídio (ideação, plano e tentativa) como variável dependente do trauma sobre o transtorno psiquiátrico. Todos os estudos descritos nesta revisão defendem significativa associação entre trauma na infância, transtorno psiquiátrico e suicídio. A intensidade dessa associação, bem como o número de eventos e o grau de interferência, varia entre os artigos.(AU)

Some evidences from the literature suggests an association between childhood trauma and suicidal behavior. Motivated by the question "patients suffering from psychiatric disorders, childhood trauma commit more suicides?" We intend to conduct a systematic review on the impact of childhood trauma in patients with psychiatric disorders and their correspondence with suicidal ideation and suicide attempts. The survey was conducted by a Medline search, with limited time in five years to date and published articles in English. The search terms were:"Child Abuse" [Mesh] AND "Mental Disor-ders" [Mesh]) AND "Suicide" [Mesh]. The research considered trauma as independent variable, psychiatric disorders such as dependent and independent variable and suicide (suicidal ideation, plan and attempt) as the dependent variable of trauma on the psychiatric disorders. All studies described in this review support a significant association between childhood trauma, psychiatric disorders and suicide. The strength of the association, as well as the number of events and the degree of interference varies among them.(AU)