The link between alterations in circadian rhythms and lipid metabolism in bipolar disorder: the lipid droplets hypothesis.

Bipolar disorder (BD) is a neuropsychiatric illness characterized by recurrent episodes of mania and depression, leading to profound cognitive and functional impairments, psychiatric and metabolic comorbidities, and substantial healthcare costs. Due to its complex nature and absence of specific biomarkers, BD presents significant daily challenges for clinicians. Therefore, advancing our understanding of BD pathophysiology is essential to identify novel diagnostic biomarkers and potential therapeutic targets. Although its neurobiology remains unclear, disruption of circadian rhythms and lipid alterations have emerged as key hallmarks of BD. As essential components of the brain, lipids play a pivotal role in regulating synaptic activity and neuronal development. Thus, alterations in brain lipids may contribute to the neuroanatomical changes and reduced neuroplasticity observed in BD. The levels of toxic lipids inside the cell are buffered by lipid droplets that regulate the storage of neutral lipids. These dynamic organelles adapt to cellular needs, and their dysregulated accumulation has been linked to various pathological conditions. Notably, lipid droplets and various lipid classes display rhythmic oscillations throughout the 24-hour cycle, suggesting a link between lipid metabolism, circadian rhythms and lipid droplets. In this review, we explore the impairment of circadian rhythms and lipid metabolism in BD, along with evidence demonstrating that circadian clocks regulate the accumulation of lipid droplets. Importantly, we propose the "lipid droplets hypothesis for BD" that considers that the compromised lipid metabolism in BD is intimately associated with alterations in the lipid droplets homeostasis, which can be driven by disturbances in the circadian clocks.

Transitional photoperiod induces a mania-like behavior in male mice.

This study aimed to investigate the behavioral responses and circadian rhythms of mice to both rapid and gradual increases in photoperiod, mimicking the transition from winter to summer, which is associated with a heightened prevalence of hospitalizations for mania and suicidal behavior. Behavioral tests were performed in C57BL/6 male mice exposed to a transitional photoperiod, from short to long durations. To determine if circadian rhythms are affected, we measured spontaneous locomotor activity and body temperature. Mice exhibited heightened exploratory and risk-taking behaviors compared with equatorial and static long (16:8 h of light-dark cycle for several days) groups. These behaviors were prevented by lithium. Spontaneous locomotor activity and body temperature rhythms persisted and were effectively synchronized; however, the relative amplitude of activity and interdaily stability were diminished. Additionally, the animals displayed increased activity during the light phase. Photoperiodic transition modulates behavior and circadian rhythms, mirroring certain features observed in bipolar disorder patients. This study introduces an animal model for investigating mania-like behavior induced by photoperiodic changes, offering potential insights for suicide prevention strategies and the management of mood disorders.

Effects of different indications on electroconvulsive therapy.

OBJECTIVE: The objective of the study is to evaluate how electroconvulsive therapy (ECT) affects treatment-resistant depression, bipolar and schizophrenic patient groups, and suicide attempt histories and to evaluate the relationship between treatment variables and patient outcomes. METHOD: In a retrospective cohort study at the inpatient psychiatry clinic of Çam and Sakura City Hospital between January, 2021, and February, 2023, 103 patients receiving ECT were analyzed. They were categorized into two groups according to indications that suicide risk (n = 76) and resistance to pharmacotherapy (n = 27). RESULTS: The analysis revealed no significant age (p = 0.374) or gender (p = 0.304) differences between groups. However, significant differences emerged in diagnostic distribution (p = 0.027), with the suicide risk group receiving more ECT sessions (13.6 ± 11.2, p = 0.025) and experiencing longer total seizure times (427 ± 325 s, p = 0.023) compared to the treatment-resistant group (8.5 ± 4.7 sessions and 279 ± 115 s, respectively). CONCLUSIONS: ECT's therapeutic application does not differ from demographic variables but is influenced by clinical diagnosis, with suicide risk patients receiving more intensive treatment. These findings highlight the necessity of individualized ECT protocols and suggest that diagnostic considerations are critical in optimizing ECT treatment strategies. Despite its retrospective design, the study underscores the importance of personalized ECT regimens and calls for further prospective research to validate these findings.

OBJETIVO: Evaluar cómo la terapia electroconvulsiva afecta a grupos de pacientes con depresión resistente al tratamiento, trastorno bipolar, esquizofrenia y antecedentes de intentos suicidio, y evaluar la relación entre variables de tratamiento y resultados. MÉTODO: En una cohorte retrospectiva en la clínica de psiquiatría para pacientes internados del Çam and Sakura City Hospital, entre el 01/2021 y el 03/2023, se analizaron 103 pacientes que recibieron terapia electroconvulsiva. Estos se clasificaron en dos grupos según los indicios de riesgo de suicidio (n = 76) y de resistencia a la farmacoterapia (n = 27). RESULTADOS: El análisis no mostró diferencias significativas en cuanto a edad (p = 0.374) y sexo (p = 0.304) entre los grupos. Sin embargo, hubo diferencias significativas en la distribución diagnóstica (p = 0.027), con el grupo de riesgo de suicidio recibiendo más sesiones de terapia electroconvulsiva (13.6 ± 11.2; p = 0.025) y experimentando tiempos totales de convulsión más largos (427 ± 325 segundos; p = 0.023) en comparación con el grupo resistente al tratamiento (8.5 ± 4.7 sesiones y 279 ± 115 segundos, respectivamente). CONCLUSIONES: La aplicación terapéutica de la terapia electroconvulsiva no difiere según las variables demográficas, pero sí se ve influenciada por el diagnóstico clínico, recibiendo los pacientes de riesgo de suicidio un tratamiento más intensivo.

Sexual function in patients with bipolar disorder type I evaluated in symptomatic remission: a cross-sectional study.

INTRODUCTION: Bipolar disorder (BD) is a chronic pathology that is associated with several impairments throughout a patient's life, including decreased sexual function. Despite the importance in quality of life (QoL), functionality and medication adherence, it is still little investigated in these patients. OBJECTIVE: To compare the sexual function of patients with Bipolar Disorder type I (BD-I), in remission, with healthy controls (HC) and to investigate the clinical and socio-demographic characteristics associated with sexual function in these individuals. Also, to assess the QoL in patients with and without sexual dysfunction (SD). METHODS: Cross-sectional study with 132 patients with BD-I in euthymic phase and 61 HCs from an outpatient clinic. All the participants were evaluated through the Arizona Sexual Scale (ASEX) and the brief version of the World Health Organization Quality of Life Assessment (WHOQoL-BREF). The patients with BD-I were compared with the HCs. The patients were divided into two groups: the ones diagnosed with SD and the ones without it. RESULTS: The patients with BD-I had higher rates of SD (42.4%) compared to the HCs (16.4%) (OR 3.67, 95% CI 1.55 - 8.67; p=0.003). SD in patients was associated with being women (p=0.001), older age (p=0.003) and having a longer duration of untreated illness (p=0.010). Patients with SD had worse QoL scores compared to those without SD. CONCLUSION: Patients with BD-I have a high prevalence of SD and this was associated with worse QoL scores in all domains.

Characteristics of hallucinations in borderline personality disorder. Similarities and differences with schizophrenia and bipolar disorder / Características de las alucinaciones en el trastorno límite de la personalidad. Similitudes y diferencias con la esquizofrenia y el trastorno bipolar.

Psychosis can be considered a dimension that in its most severe extreme can be expressed with alterations in sensory perception, mainly hallucinations. Their presence is a fact that is frequently observed in severe psychiatric pathologies such as schizophrenia (EZQ) and bipolar disorder (BD) where they can be markers of severity. However, sensory-perceptual disturbances are not pathognomonic of these disorders, nor do they signal any of these illnesses as an isolated event. Such symptomatology can be described in a variety of situations both within and outside psychopathology. In this sense, proposing a direct line between hallucinations and diseases such as CZS or TB disregards their occurrence in other pathologies, as is the case of Borderline Personality Disorder (BPD). It is feasible that we may find the expression of pseudo hallucinations or hallucinations in patients with this disorder and their presence may have etiological, clinical and therapeutic connotations that should be reviewed and taken into account in our clinical practice.

La psicosis puede ser considerada una dimensión que en su extremo de mayor gravedad puede expresarse con alteraciones en la sensopercepción, principalmente alucinaciones. Su presencia es un hecho que se constata con frecuencia en patologías psiquiátricas severas como la esquizofrenia (EZQ) y el trastorno bipolar (TB) donde pueden ser marcadores de gravedad. No obstante, las alteraciones sensoperceptivas no son patognomónicas de estos trastornos ni señalan ninguna de estas enfermedades como un hecho aislado. Dicha sintomatología puede ser descripta en diversas situaciones dentro y fuera de la psicopatología. En este sentido, proponer una línea directa entre las alucinaciones con enfermedades tales como la EZQ o el TB desestima su ocurrencia en otras patologías, como es el caso del Trastorno límite de la personalidad (TLP). Es factible que constatemos la expresión de alucinaciones en pacientes con este trastorno y su presencia puede tener connotaciones etiológicas, clínicas y terapéuticas que deben ser revisadas para tener en cuenta en nuestra práctica clínica.

Psychiatric rehospitalizations: Clinical, social and demographic determinants in a hospital of the City of Buenos Aires / Reinternaciones psiquiátricas: Determinantes clínicos, sociales ydemográficos en un hospital de la Ciudad de Buenos Aires.

Objective: This study aims to determine variables associated with multiple rehospitalizations in a women's hospitalization Unit in a Psychiatric Emergency Hospital in the City of Buenos Aires, Argentina. Method: In this an analytical, cross-sectional study 350 patients between 18 and 65 years of age, hospitalized from 2013 to December 2017 in the women's hospitalization room of the Psychiatric Emergency Hospital "Torcuato de Alvear" were included. At the time of discharge, sociodemographic, clinical and discharge conditions data were collected from all patients. Multiple hospitalizations were defined as having had 3 or more prior life-time. For continuous variables, t-test or analysis of variance (ANOVA) was performed in cases of normal distribution, and Mann-Whitney and Kruskal-Wallis test in cases of asymmetric distribution. The qualitative variables were analyzed through the chi-square test with continuity correction. The association between variables was evaluated through Pearson or Spearman correlation coefficients as appropriate. Results: The variables associated with multiple rehospitalizations were: the Bipolar Disorder diagnosis, being under treatment at the time of admission, as well as housing precariousness, lack of work and economic autonomy. Conclusion: Representative variables of social and economic vulnerability were associated with the use of psychiatric inpatient beds. Public policies are needed to interrupt the relationship between poverty and mental pathology.

OBJETIVO: Este trabajo busca determinar las variables asociadas a las rehospitalizaciones múltiples en una sala de internación de mujeres, del Hospital de Emergencias Psiquiátricas "Torcuato de Alvear" de la Ciudad de Buenos Aires, Argentina. MÉTODO: El presente es un estudio analítico, de tipo transversal, en el que se incluyeron consecutivamente 350 pacientes de entre 18 y 65 años, hospitalizadas desde 2013 hasta diciembre de 2017 en la sala de internación de mujeres de dicho hospital. Al momento del alta se recabaron datos sociodemográficos, clínicos y sobre las condiciones de externación de todas las pacientes. Se definió internaciones múltiples al haber tenido 3 o más internaciones previas al momento de la actual internación. Para variables continuas se realizó test t o el análisis de varianza (ANOVA) en casos de distribución normal, y test de Mann- Whitney y Kruskal-Wallis en casos de distribución asimétrica. Las variables cualitativas se analizaron a través del test de chi-cuadrado con corrección de continuidad. La asociación entre variables se evaluó a través de los coeficientes de correlación de Pearson o Spearman según corresponda. RESULTADOS: Las variables asociadas con reinternaciones múltiples fueron: el diagnóstico de Trastorno Bipolar, encontrarse realizando tratamiento al ingreso, así como la precariedad habitacional, la falta de trabajo y de autonomía económica. CONCLUSIÓN: Las variables representativas de vulnerabilidad social y económica se asociaron con la utilización de camas de  internación psiquiátrica. Son necesarias políticas públicas que permitan interrumpir la relación entre pobreza y patología mental.

Targeting inflammasome complexes as a novel therapeutic strategy for mood disorders.

INTRODUCTION: Inflammasome complexes, especially NLRP3, have gained great attention as a potential therapeutic target in mood disorders. NLRP3 triggers a caspase 1-dependent release of the inflammatory cytokines IL-1ß and IL-18, and seems to interact with purinergic and kynurenine pathways, all of which are implicated in mood disorders development and progression. AREAS COVERED: Emerging evidence supports NLRP3 inflammasome as a promising pharmacological target for mood disorders. We discussed the available evidence from animal models and human studies and provided a reflection on drawbacks and perspectives for this novel target. EXPERT OPINION: Several studies have supported the involvement of NLRP3 inflammasome in MDD. However, most of the evidence comes from animal models. The role of NLRP3 inflammasome in BD as well as its anti-manic properties is not very clear and requires further exploration. There is evidence of anti-manic effects of P2×R7 antagonists associated with reduction in the brain levels of IL-1ß and TNF-α in a murine model of mania. The involvement of other NLRP3 inflammasome expressing cells besides microglia, like astrocytes, and of other inflammasome complexes in mood disorders also deserves further investigation. Preclinical and clinical characterization of NLRP3 and other inflammasomes in mood disorders is needed before considering translational approaches, including clinical trials.

Adherencia al Tratamiento Psicofarmacológico de los Pacientes con Trastornos Mentales Graves y Persistentes: Revisión Sistemática / Adherence to Psychopharmacological Treatment in Patients with Severe and Persistent Mental Disorders: a Systematic Review

resumen Introducción: Se sabe que la falta de adherencia a los medicamentos psiquiátricos tiene consecuencias perjudiciales tanto para los pacientes como para la sociedad. Objetivo: Recopilar información sobre la incidencia de falta de adherencia, los factores y las causas que afectan a la adherencia al tratamiento psicofarmacológico de los pacientes con trastornos mentales graves y persistentes. Métodos: Revisión sistemática de artículos científicos en pacientes adultos (edad > 17 arios), publicados en los últimos 5 años (2015-2020) en bases de datos especializadas como Pub-Med, Scopus, Scielo y BioMed. Se incluyeron artículos de revistas indexadas con factor de impacto > 0,5 en inglés o español, originales, con diseño analítico, prospectivo, retrospectivo, transversal y aleatorizados. Una vez identificados los artículos, se procedió a su análisis, extrayendo la información necesaria para responder las preguntas de investigación. Resultados: Se incluyeron 15 artículos, el 40% (n = 6) publicados en 2020, el 20% (n = 3) realizados en China y el 53,3% (n = 8) de diseño observacional. Se incluyó una población total de 5.837 pacientes, varones el 50,6% (n = 2.955). Reportaron adherencia moderada 10 investigaciones (66,7%). La falta de adherencia varía desde el 7,7 al 60,6%. Los factores que afectan a la adherencia son propios del paciente (edad y sexo) o su red de apoyo familiar, relacionados con la enfermedad o el tratamiento. La principal causa de la falta de adherencia es la ausencia de insight. Conclusiones: La adherencia al tratamiento con psicofármacos es multifactorial. Se debería mejorar el acceso a los servicios de salud mental, poner énfasis en la formación del paciente y aportar mayor conocimiento de la enfermedad mental; la formación y la interacción con el psiquiatra podrían ser intervenciones beneficiosas.

abstract Introduction: It is known that non-adherence to psychiatric medications has harmful consequences for both patients and society. Objective: To collect information on the incidence of non-adherence, and the factors and causes affecting adherence to psychopharmacological treatment in patients with severe and persistent mental disorders. Methods: A systematic review of scientific articles on adult patients (>17 years) published in the last five years (2015-2020) on specialized databases such as PubMed, Scopus, Scielo and BioMed. Original articles from indexed journals with an impact factor>0.5, in English or Spanish, with an analytical, prospective, retrospective, cross-sectional and randomized design were included. Once the articles were identified, they were analyzed, extracting the information necessary to answer the research questions. Results: Fifteen articles were included. Of these, 40% (n = 6) were published in 2020, 20% (n = 3) were produced in China and 53.3% (n = 8) had an observational design. A total of 5,837 patients were included, of which 50.6% were men (n = 2,955), with moderate adherence (n = 10; 66.7%) reported in 10 investigations. Non-adherence varies from 7.7% to 60.6%. The factors that affect adherence are specific to the patient (age and sex), their family support network, and related to the disease or the treatment. The main cause of non-adherence is lack of insight. Conclusions: Adherence to treatment with psychotropic drugs is multifactorial. Access to mental health services should be improved, with an emphasis placed on patient education and providing greater knowledge of mental illness. Interventions to promote education and interaction with the psychiatrist could be beneficial.

Psychometric Properties of the Spanish Version of the Cognitive Problems and Strategies Assessment in Patients with Bipolar Disorder.

Cognitive deficits play an important role in Bipolar Disorder (BPD). The Cognitive Problems and Strategies Assessment (CPSA) is a measure that evaluates the patient's perception of cognitive difficulties, and the spontaneous use of compensatory strategies and could thus have potential utility for clinical practice in patients with BPD. Our aim was to determine the validity and reliability of the Cognitive Problems and Strategies Assessment (CPSA) in Bipolar Disorder (BPD). Ninety-three BPD outpatients and 90 controls completed the Assessment of Problems with Thinking and Memory (APTM) questionnaire and the Assessment of Memory and Thinking Strategies (AMTS) questionnaire which constitute the CPSA, the Cognitive Complaints in Bipolar Disorder Rating Assessment (COBRA), as a measure of convergent validity, and general sociodemographic data. Cronbach's alpha coefficient, Spearman's correlation coefficient and independent sample t tests were used for Internal consistency, Convergent validity and Discriminant validity. The APTM had a Cronbach's alpha coefficient of 0.93 and the AMTS 0.90. The COBRA score and the APTM were significantly correlated. BPD patients exhibited higher scores on the APTM and lower scores on the AMTS than controls. The present instrument enriches the clinician's repertoire for rapid and inexpensive cognitive evaluation in BPD.

Evaluation of Galectin-1 and Galectin-3 levels in patients with bipolar disorder: Is Galectin-3 associated with treatment response?

INTRODUCTION: Galectins (Gal) were linked with inflammatory responses in the central nervous system, may play an important role in the pathogenesis of BD.In this study,we aimed to investigate whether serum Gal-1 and Gal-3 levels are related to BD. METHODS: 36 patients diagnosed with BD were included.C-Reactive Protein(CRP),Gal-1,Gal-3 blood levels were evaluated on the first day of hospitalization and the third week of treatment and compared with 41 healthy controls.The severity of the illness was evaluated with the Young Mania Rating Scale (YMRS). RESULTS: CRP levels of BD patients at hospitalization were significantly higher than the third week of treatment and healthy controls.Gal-1 levels on the first day of hospitalization and the third week of treatment were found higher than the healthy controls.There was no significant difference in Gal-3 levels of the patients on the day of hospitalization compared to healthy controls;at the end of the 3rd week of treatment,Gal-3 was statistically significantly higher than the first day of hospitalization. CONCLUSION: Our study is valuable in that it is the first study to show the change in Gal levels after treatment and to evaluate the role of Gal in BD.Gal-1 may play roles in the pathophysiology of BD.Gal-3 may be a biomarker candidate for the evaluation of the treatment response.

Bipolar disorders and schizophrenia: discrete disorders?

Background: With similarities in heritability, neurobiology and symptomatology, the question has been raised whether schizophrenia and bipolar disorder are truly distinctive disorders or belong to a continuum. This narrative review summarizes common and distinctive findings from genetics, neuroimaging, cognition and clinical course that may help to solve this ethiopathogenetic puzzle. Methods: The authors conducted a literature search for papers listed in PubMed and Google Scholar, using the search terms "schizophrenia" and "bipolar disorder" combined with different terms such as "genes", "neuroimaging studies", "phenomenology differences", "cognition", "epidemiology". Articles were considered for inclusion if they were written in English or Spanish, published as full articles, if they compared subjects with schizophrenia and bipolar disorder, or subjects with either disorder with healthy controls, addressing differences between groups. Results: Several findings support the hypothesis that schizophrenia and bipolar disorder are discrete disorders, yet some overlapping of findings exists. The evidence for heritability of both SZ and BD is obvious, as well as the environmental impact on individual manifestations of both disorders. Neuroimaging studies support subtle differences between disorders, it appears to be rather a pattern of irregularities than an unequivocally unique finding distinguishing schizophrenia from bipolar disorder. The cognitive profile displays differences between disorders in certain domains, such as premorbid intellectual functioning and executive functions. Finally, the timing and trajectory of cognitive impairment in both disorders also differs. Conclusion: The question whether SZ and BD belong to a continuum or are separate disorders remains a challenge for further research. Currently, our research tools may be not precise enough to carve out distinctive, unique and undisputable differences between SZ and BD, but current evidence favors separate disorders. Given that differences are subtle, a way to overcome diagnostic uncertainties in the future could be the application of artificial intelligence based on BigData. Limitations: Despite the detailed search, this article is not a full and complete review of all available studies on the topic. The search and selection of papers was also limited to articles in English and Spanish. Selection of papers and conclusions may be biased by the personal view and clinical experience of the authors.

Comparison of early risk factors between healthy siblings and subjects with schizophrenia and bipolar disorder.

Introduction: The following work aims to compare the types and magnitude of risk events in patients with Schizophrenia and Bipolar Disorder and each of those groups with of a group of healthy siblings, exploring differences and similarities of the two psychotic disorders. Methods: Retrospective interviews were conducted with 20 families to investigate maternal and obstetric health, social support and the presence of early trauma for the affected family members and healthy siblings. Mothers were interviewed with the Prenatal Psychosocial Profile and each family participant was assessed with the Early Trauma Inventory, Screening Questionnaire of the Genomic Psychiatry Cohort and the Diagnostic Interview for Psychosis and Affective Disorders. Results: Obstetric and gestational history, pregnancy weight changes and early trauma were associated with offspring's mental illness, including statistically significant findings for complications of pregnancy, pregnancy weight changes, general trauma, physical punishment and emotional abuse. Conclusion: These findings highlight the different risk factor exposures that occur within a family, which may increase the risk for severe mental illness.

HERV-W upregulation expression in bipolar disorder and schizophrenia: unraveling potential links to systemic immune/inflammation status.

BACKGROUND: Bipolar disorder (BD) and schizophrenia (SZ) are the two main mental disorders with unknown etiology that significantly impact individuals' quality of life. The potential pro-inflammatory role in their pathogenesis is postulated and Human Endogenous Retrovirus W (HERV-W) is an emerging candidate to modulate this pathogenic finding. HERVs, ancient retroviruses in the human genome, may play roles in inflammation and disease pathogenesis. Despite HERVs' involvement in autoimmune diseases, their influence on mental disorders remains underexplored. Therefore, the aim of this study was to assess the level of HERV-W-env expression and the systemic inflammatory profile through the concentration of IL-2, IL-4, IL-6, IL-10, TNF-α and INF-γ cytokines in BD and SZ patients. RESULTS: All participants showed HERV-W-env expression, but its expression was higher in mental disorder patients (p < 0.01) than in control. When separated, SZ individuals exhibited higher HERV-W expression than the control group (p < 0.01). Higher serum levels of TNF-α and IL-10 were found in BD (p = 0.0001 and p = 0.001, respectively) and SZ (p = 0.01) and p = 0.01, respectively) than in the control group, while SZ showed decreased levels IFN-γ and IL-2 as compared to controls (p = 0.05) and BD patients (p = 0.05), respectively. Higher TNF-α/IL-4 and TNF-α/IL-10 ratios, and lower IFN-γ/IL-10 were observed in BD and SZ patients than controls. Significant negative correlation between HERV-W-env expression and IL-10 (r=-0.47 p < 0.05), as well as positive correlations between HERV-W-env expression and TNF-α/IL-10 or IFN-γ/IL-10 ratios (r = 0.48 p < 0.05 and r = 0.46 p < 0.05, respectively) were found in BD patients. CONCLUSION: These findings suggest not only a potential link between HERV-W-env expression both in BD and SZ, but also a possible involvement of systemic inflammatory status in BD patients.

Are Advanced Oxidation Protein Products (AOPPs) Levels Altered in Neuropsychiatric Disorders? An Integrative Review.

Neuropsychiatric disorders such as major depressive disorder (MDD), bipolar disorder (BD), and schizophrenia (SZ) are considered a public health problem since it interferes in personal relationships and at work. The pathophysiological mechanisms of these mental disorders are still not completely understood. The variety and heterogeneity of symptoms, as well as the absence of biomarkers, make the diagnosis, prognosis, and treatment of these disorders difficult. However, oxidative stress appears to play a role in the pathophysiology of these diseases. In this context, advanced oxidation protein products (AOPPs) are considered a biomarker of protein oxidative damage and have been associated with neuroinflammatory diseases. In patients with neuropsychiatric disorders, increased levels of AOPPs were associated with the severity of symptoms and decreased quality of life. Thus, the objective of this integrative review is to investigate and discuss the relationship between AOPPs levels and MDD, BD, and SZ. Different databases were consulted and approximately 112 scientific articles were found relating AOPPs and psychiatric disorders. In the majority of studies, the blood levels of AOPPs were increased in MDD, BD, and SZ and associated with the severity of the disorders. Although the association of this marker with the risk of developing one of these mental disorders is more uncertain, some studies have suggested this relationship. Of the twenty-four studies highlighted, only four did not find significant differences in AOPPs levels in patients with the disorders mentioned. In summary, it may be suggested that the assessment of AOPPs levels can be a useful tool in the evaluation of neuropsychiatric disorders, at least for prognostic evaluation. However, the role of this biomarker in the pathophysiology of mental disorders is still unclear, as well as whether reducing its levels represents a potential therapeutic strategy.

Subcortical Volume Changes in Schizophrenia and Bipolar Disorder: A Quantitative MRI Study

SUMMARY: Volume abnormalities in subcortical structures, including the hippocampus, amygdala, thalamus, caudate, putamen, and globus pallidus have been observed in schizophrenia (SZ) and bipolar disorder (BD), not all individuals with these disorders exhibit such changes. In addition, the specific patterns and severity of volume changes may vary between individuals and at different stages of the disease. The study aims to compare the volumes of these subcortical structures between healthy subjects and individuals diagnosed with SZ or BD. Volumetric measurements of lateral ventricle, globus palllidus, caudate, putamen, hippocampus, and amygdale were made by MRI in 52 healthy subjects (HS), 33 patients with SZ, and 46 patients with BD. Automatic segmentation methods were used to analyze the MR images with VolBrain and MRICloud. Hippocampus, amygdala and lateral ventricle increased in schizophrenia and bipolar disorder patients in comparison with control subjects using MRIcloud. Globus pallidus and caudate volume increased in patients with schizophrenia and bipolar disorder compared control subjects using Volbrain. We suggested that our results will contribute in schizophrenia and bipolar disorder patients that assessment of the sub-cortical progression, pathology, and anomalies of subcortical brain compositions. In patients with psychiatric disorders, VolBrain and MRICloud can detect subtle structural differences in the brain.

Se han observado anomalías de volumen en las estructuras subcorticales, incluidos el hipocampo, la amígdala, el tálamo, el núcleo caudado, el putamen y el globo pálido, en la esquizofrenia (SZ) y el trastorno bipolar (BD); no todos los individuos con estos trastornos presentan tales cambios. Además, los patrones específicos y la gravedad de los cambios de volumen pueden variar entre individuos y en diferentes etapas de la enfermedad. El estudio tuvo como objetivo comparar los volúmenes de estas estructuras subcorticales entre sujetos sanos e individuos diagnosticados con SZ o BD. Se realizaron mediciones volumétricas del ventrículo lateral, globo pálido, núcleo caudado, putamen, hipocampo y amígdala mediante resonancia magnética en 52 sujetos sanos (HS), 33 pacientes con SZ y 46 pacientes con BD. Se utilizaron métodos de segmentación automática para analizar las imágenes de resonancia magnética con VolBrain y MRICloud. El hipocampo, la amígdala y el ventrículo lateral aumentaron en pacientes con esquizofrenia y trastorno bipolar en comparación con sujetos de control que utilizaron MRIcloud. El globo pálido y el núcleo caudado aumentaron en pacientes con esquizofrenia y trastorno bipolar en comparación con los sujetos control que utilizaron Volbrain. Sugerimos que en pacientes con esquizofrenia y trastorno bipolar, nuestros resultados contribuirán a la evaluación de la progresión subcortical, la patología y las anomalías de las composiciones cerebrales subcorticales. En pacientes con trastornos psiquiátricos, VolBrain y MRICloud pueden detectar diferencias estructurales sutiles en el cerebro.

Study of the clinical profile of older patients with bipolar disorder in a tertiary care center in the Midwest of Brazil / Estudo do perfil clínico de pacientes idosos com transtorno bipolar em um centro terciário do Centro-Oeste do Brasil

Objective: This study aimed to describe the clinical and psychiatric characteristics of older outpatients with bipolar disorder (BD), including psychiatric history (age of onset of symptoms, length of time with the illness, and number of psychiatric hospitalizations), mood state, and cognitive function. Methods: This was a cross-sectional study where clinical and demographic data were obtained by a psychiatric interview with each patient and family members as well as by a review of medical records. The sample consisted of 20 individuals aged 60 years or older with a diagnosis of BD type I according to the Diagnostic and Statistical Manual of Mental Disorders, 5th edition. Descriptive data analysis was performed, with categorical variables expressed as absolute and relative frequencies. Results: No patient had manic or depressive symptoms at the time of the evaluation; 15 (75.0%) had an early onset while 5 (25.0%) had a late onset of the disease. Nine patients (45.0%) showed no cognitive decline whereas 11 (55.0%) showed mild cognitive impairment. Conclusions: This study presents an understudied group of patients with BD. Considering the personal impact and burden on the health system related to this psychiatric condition, it is recommended that further studies be conducted in this area to better evaluate this growing population. (AU)

Spanish validation of the short version of the racing and crowded thoughts questionnaire (RCTQ-13).

BACKGROUND: The Racing and Crowded Thoughts Questionnaire (RCTQ-13) is the most widely used specific scale for the measurement of racing thoughts, but there is currently no Spanish version that allow the evaluation in Spanish-speaking patients. The objective of this study is to translate, adapt, and validate the RCTQ-13 in a Colombian population with affective disorders. METHODS: The questionnaire was translated and back-translated, and corrections were implemented following a pilot test to improve comprehensibility. We included patients with Bipolar I Disorder and with Major depressive disorder seen in three centers in the city of Medellín, Colombia. We evaluate structural validity with confirmatory factor analysis, internal consistency, and test-retest reliability. Construct validity was also assessed with the comparison between euthymic, maniac, and depressive episodes and the correlation with worry, rumination, and mania scales. Responsiveness was measured 1 month after the first evaluation. Based on item response theory (IRT), we also estimated item difficulty, discrimination, and fit using a generalized partial credit model. RESULTS: Two hundred fifty subjects were included. Confirmatory factor analysis revealed that the three-factor structure of the scale was appropriate. Internal consistency was adequate for the entire scale (Cronbach's alpha = 0.95, 95% CI: 0.94-0.96) and for each factor. Test-retest reliability was good (intraclass correlation coefficient = 0.82, 95%IC: 0.70-0.88). For construct validity, we observed differences between patients with different types of affective episodes, a moderate positive correlation with the Penn State Worry Scale (r = 0.55) and the Ruminative Response Scale (r = 0.42), and a low negative correlation with the Young Mania Rating Scale (r = - 0.10). Responsiveness was proved to be adequate. Under IRT, the response thresholds for the response options are organized for all items. The infit was adequate for all items and the outfit was acceptable. CONCLUSIONS: The Spanish version of the RCTQ-13 is a reliable, valid, and responsive scale and can be used for the clinical assessment of the construct of racing and crowded thoughts in patients with the spectrum of affective disorders in whom this experience can be expressed with different nuances. Further research is needed to expand the relationship with rumination and worry.

Perinatal risk factors for the onset of bipolar disorder in young adulthood: a 22-year birth cohort.

OBJECTIVE: Bipolar disorder (BD) is a major cause of disability-adjusted life years in young adults. Pregnancy complications have previously been associated with BD. The current study aimed to examine the association between perinatal factors and BD. METHODS: We included 3,794 subjects from the 1993 Pelotas population-based birth cohort study. We assessed 27 variables at birth and modeled BD onset at 18 and 22 years. Bivariate analysis was performed by means of binomial logistic regression models. The variables with p-values less than 0.05 were included in a multiple regression with confounders. RESULTS: Maternal smoking was associated with a 1.42-fold increased risk of BD at 18 or 22 years old (95%CI 1.091-1.841), and maternal passive exposure to tobacco with a 1.43-fold increased risk (95%CI 1.086-1.875). No association was found between other perinatal factors and BD after controlling for confounders. CONCLUSION: The results of the present cohort study corroborate previous reports in the literature indicating a negative effects of maternal smoking during pregnancy. These findings can be further tested and support the development of strategies to prevent the onset development of BD.