Personality Traits Interact With Sleep and Biological Rhythm in Patients With Bipolar Disorder.

ABSTRACT: Sleep disturbances and circadian rhythm changes in bipolar disorder (BD) may have behavioral components as well as biological components. This study aimed to examine the relationship between personality traits, sleep and circadian rhythm in BD. A total of 150 participants with BD, and 150 healthy controls completed the Big Five Personality Test-50 (B5PT-50-TR), Biological Rhythm Interview of Assessment in Neuropsychiatry (BRIAN), Functioning Assessment Short Test (FAST), Pittsburgh Sleep Quality Index (PSQI), Young Mania Rating Scale and Beck Depression Inventory. In the BD group, B5PT-50-TR emotional stability and openness subscale scores were significantly lower in comparison with the healthy control group. Agreeableness and emotional stability subscales were covariates for the BRIAN sleep subscale and emotional stability was a covariate for PSQI total score. Emotional instability might be a vulnerability factor for sleep disorders and biological rhythm abnormalities in BD. Improvement in emotional instability may relieve sleep disorders and biological rhythm, thereby leading to better treatment outcomes in BD.

Serum hepcidin / ferroportin levels in bipolar disorder and schizophrenia.

BACKGROUND: Despite several alternatives for cellular iron influx, the only mechanism for cellular iron efflux is ferroportin mediated active transport. In cases of ferroportin dysfunction, iron accumulates in the cell and causes ferroptosis. Hepcidin suppresses ferroportin levels and inflammatory activation increases hepcidin production. Mild inflammation in schizophrenia and bipolar disorder may alter hepcidin and ferroportin. METHODS: The study included a total of 137 patients aged 18-65 years, 57 diagnosed with schizophrenia and 80 with bipolar disorder, according to the DSM-IV diagnostic criteria, and a control group (HC) of 42 healthy individuals. Biochemical analyses, thyroid function tests, hemogram, serum iron level, iron-binding capacity, and ferritin levels were examined. Serum levels of hepcidin and ferroportin were measured with enzyme-linked immunosorbent assay (ELISA) method. RESULTS: A statistically significant difference was determined between the groups in terms of the serum ferroportin levels (F = 15.69, p < 0.001). Post-hoc analyses showed that the schizophrenia group had higher ferroportin levels than in the bipolar group (p < 0.001) and HCs (p < 0.001). Hepcidin levels did not differ between the groups. Chlorpromazine equivalent doses of antipsychotics correlated with ferroportin levels (p = 0.024). CONCLUSION: Ferroportin levels were increased in the schizophrenia group, although iron and hepcidin levels were within normal ranges. Antipsychotics may alter the mechanisms which control ferroportin levels. Further studies are needed to examine the relationships between antipsychotics and iron metabolism for determination of causal relationship.

[Relationship between Childhood Adversities, Emotion Dysregulation and Cognitive Processes in Bipolar Disorder and Recurrent Depressive Disorder]. / Bipolar Bozukluk ve Yineleyici Depresif Bozuklukta Çocukluk Çagi Travmalari ve Duygu Düzenleme Güçlükleri ile Bilissel Süreçler Arasindaki Iliski.

OBJECTIVE: Cognitive development is susceptible to environmental distress, leading to cognitive distortions. Cognitive distortions may affect clinical course of psychiatric disorders. We aimed to assess whether childhood maltreatment and emotion dysregulation impair automatic thoughts (ATs) and meta-cognitions (MCs) in Bipolar Disorder (BD) and Major Depressive Disorder - Recurrent (MDB-RE) in this study. METHOD: 85 patients with BD, 81 MDD-RE in remission and 86 healthy participants were enrolled. Automatic Thoughts Scale (ATS), Metacognition Questionnaire (MCQ-30), Childhood Trauma Questionnaire (CTQ- 28), Difficulties in Emotion Regulation Strategies Scale (DERS) were the measures used. RESULTS: ATs were determined by CTQ physical abuse (ß=0.34, p<0.01), DERS goals (ß=-0.37, p<0.01), impulse (ß=0.53, p<0.01) and non-accept (ß=0.23, p<0.05) subscales in BD (F=21.08, p<0.01) and CTQ emotional neglect (ß=0.22, p<0.05), DERS strategies (ß=0.39, p<0.05) in MDD-RE (F=9.97, p<0.05). MCs were predicted by sexual abuse (ß=0.46, p<0.01) in BD (F=4.88, p<0.01), and emotional abuse (B=-0.30, p<0.05) in MDD-RE (F= 7.02, p<0.01). CONCLUSION: These results suggest that emotion dysregulation and childhood adversities are associated with cognitive processes such as MCs and ATs in MDD-RE and BD. Cognitive processes can cause various clinical manifestations and emotion dysregulation and childhood traumas should be considered as psychopathological components that can affect the course of mood disorders via various components. Further follow-up studies and larger samples are needed to better understand the effects of these components.

Differences between autogenous and reactive obsessions in terms of metacognitions and automatic thoughts.

BACKGROUND: Obsessive compulsive disorder (OCD) is characterized by obsessions and compulsions. Obsessions have been classified as autogenous obsessions and reactive obsessions on the basis of the cognitive theory of Lee and Kwon. The aim of this study was to investigate the differences between autogenous groups (AG) and reactive groups (RG) in terms of metacognition and automatic thoughts, for the purpose of investigating the differences of cognitive appraisals. METHODS: One hundred and thirty-three patients diagnosed with OCD were included in the study as the patient group. A control group was formed of 133 age, gender and education-matched healthy individuals. The OCD group patients were separated into subgroups according to the primary obsessions. The sociodemographic data, and the Yale-Brown Obsessive Compulsive Scale, Metacognition Questionnaire-30 (MCQ-30), Automatic Thoughts Questionnaire (ATQ), Beck Depression Inventory (BDI) and Beck Anxiety Inventory (BAI) scores of the AG, RG, and control groups were compared. RESULTS: The MCQ-30 (total) and the subscales of MCQ-30 and ATQ scale points were seen to be significantly higher in the AG than in the RG and significantly higher in the RG than in the control group. In the reactive obsession group, the predictive variables of the ATQ points were determined to be MCQ-30 (total), BDI and BAI. In the autogenous obsession group, the predictive variables of the ATQ points were determined to be BDI and BAI. CONCLUSION: In the current study, differences were determined between the AG and the RG in respect of metacognitions and automatic thoughts. In light of these results, the recommended grouping can be considered useful in the identification of OCD sub-types. There is a need for further studies to identify more homogenous sub-types of OCD. Future multi-centered studies of sub-typing with larger samples using more specific instruments to sub-type and dimensional evaluation will be useful for detailed evaluation and better understanding of the subject.