Ömer Böke

Tardive dyskinesia is not associated with the polymorphisms of 5-HT2A receptor gene, serotonin transporter gene and catechol-o-methyltransferase gene >

BACKGROUND The pathophysiology of tardive dyskinesia (TD) is not completely understood.Aim. - To assess the relationship of TD with 5-HT2A receptor gene, serotonin transporter gene (5 HTT), and catechol-o-methyltransferase (COMT) gene polymorphisms. METHOD Our study comprised 111 unrelated subjects who strictly met DSM-IV criteria for schizophrenia and 32 TD, and 79 healthy unrelated controls; all the subjects were of Turkish origin. The analyses of 5-HT2A receptor gene, 5 HTT gene, and COMT gene polymorphisms were performed using polymerase chain reaction (PCR) technique. RESULTS The polymorphisms of these genes were not significantly different between the schizophrenic patients, TD and control subjects. CONCLUSION Our findings indicated that 5-HT2A receptor gene, 5 HTT gene, and COMT gene polymorphisms were similar in schizophrenia with non-TD, schizophrenia with TD, and healthy controls. These polymorphisms, though, do not help to evaluate the susceptibility to TD.

Prevalence of Metabolic Syndrome among Inpatients with Schizophrenia

Objective: Cardiovascular disease is one of the most prevalent factors responsible for excess mortality in schizophrenia. Metabolic syndrome (MetS) is associated with the development of coronary heart disease and diabetes mellitus. The aim in this cross-sectional study was to assess the prevalence of MetS in schizophrenic Turkish inpatients. Method: The study was conducted from January 2006 to June 2006, and included 231 patients with schizophrenia. All participants were enrolled from inpatients attending the Samsun Mental Health Hospital psychiatry clinic. All subjects were aged between 18 and 65 and met the DSM IV criteria for schizophrenia. MetS was taken as central obesity (defined as waist circumference: men ≥ 94 cm, women ≥ 80 cm) and meeting ≥ 2 of the following abnormalities described by the International Diabetes Federation (IDF): a serum triglyceride level > 150 mg/dL, high-density lipoprotein (HDL) cholesterol < 40 mg/dL in men and < 50 mg/dL in women, blood pressure ≥ 130/85 mm Hg, and a fasting serum glucose level ≥ 100 mg/d/L. Results: The study group consisted of 174 male and 57 female patients. Mean age was 38.5 ± 10.5 and mean duration of illness was 15.76 ± 9.95 years. The overall prevalence of MetS diagnosed according to the IDF criteria was 32.0% (n=74) and was higher in females (61.4%) than in males (22.4%; p=0.0001). In logistic regression analysis the last step of the regression model was gender (B=1.70, p=0.0001, OR=5.50, 95% Cl=2.90–10.45). Conclusion: This study shows that the prevalence of MetS in Turkish patients with schizophrenia is similar to that of the general population, but lower than in other reports regarding the schizophrenia population.

Oxidative stress in bipolar and schizophrenia patients

Oxidative stress has an important place in studies investigating the pathophysiology of psychiatric diseases. In spite of this fact, longitudinal studies are required to clarify the subject. Therefore, in this study, we examined lipid peroxidation, protein oxidation, total oxidized guanine species, superoxide dismutase (SOD) and total glutathione (GSH) levels in blood collected from adult bipolar patients (n=18) during manic and euthymic episodes, schizophrenic patients (n=18) during acute psychotic attack and remission phases and the control group (n=18). There was a significant increase in the level of lipid peroxidation in the bipolar disorder manic episode group (BD-ME) compared to control group. The level of protein oxidation was significantly higher in the schizophrenia acute psychotic attack group (SZ-APA) compared to the control group. The level of total oxidized guanine species was statistically higher in all psychiatric groups compared to the control group. There was no significant difference among the groups with regard to SOD and GSH. Consequently, we believe that lipid peroxidation may be effective in the pathogenesis of bipolar patients; that protein oxidation may be of importance in the pathogenesis of schizophrenia and that total oxidized guanine species may be crucial in the pathogeneses of both psychiatric disorders.

The reliability and validity of the Turkish version of the brief infant―toddler social emotional assessment (BITSEA)

In this study the reliability and validity of the Turkish version of the brief infant-toddler social emotional assessment (BITSEA) were investigated in a community sample. The sample consisted of 462 children (mean age: 24.60+/-7.93 [12-42] months) who had applied to Turkish health centers for immunization. Both parents completed the BITSEA; mothers completed the child behavior checklist 2/3 (CBCL). Internal consistencies of the BITSEA-problem (P) and competence (C) scales were good to excellent (Cronbachs alpha=0.82 and 0.72, respectively). Interrater reliability between parents and test-retest reliability were good. BITSEA/P scores were significantly correlated with CBCL internalizing, externalizing and total problem scores (p<0.001). Maternal BITSEA/P cutpoint scores revealed that 30.6% of male toddlers and 28.6% of females were in the subclinical range and 13.1% of males and 17.6% of females were in clinical range. Results reveal that the Turkish version of BITSEA is a reliable, valid and simply applicable instrument for screening social, emotional and behavioral problems among toddlers. Clinical validation of the BITSEA/C and BITSEA/P is warranted.

Internalized stigma and intimate relations in bipolar and schizophrenic patients: A comparative study

OBJECTIVE The aim of this study was to determine characteristics of internalized stigma and intimate relations in bipolar and schizophrenia patients and to compare characteristics of intimate relations in bipolar and schizophrenia patients with or without internalized stigma. METHOD A total of 228 volunteers were included, 119 patients with bipolar disorder and 109 with schizophrenia. Schizophrenic and bipolar disorder patients were compared in terms of internalized stigma and intimate relations characteristics. Bipolar and schizophrenia patients with and without internalized stigma were compared in terms of characteristics of intimate relations. RESULTS Internalized stigma was determined in one in three schizophrenia and one in five bipolar patients. Stigma resistance and relational esteem in intimate relations scores were higher in bipolar patients. Relational anxiety/fear of relationship, relational monitoring and external relational control scores were higher in schizophrenia patients with internalized stigma compared to those without, while their relational satisfaction, relational esteem and relational assertiveness scores were lower. Relational anxiety/fear of relationship and relational monitoring scores were higher in bipolar patients with internalized stigma compared to those without, while their relational satisfaction scores were lower. CONCLUSION Internalized stigma in schizophrenia patients is a well-known subject that has been investigated previously. The results of our study are significant in terms of showing that internalized stigma is also frequent in bipolar disorder patients, and not solely in schizophrenia patients. Stigma resistance is higher in bipolar disorder patients. Internalized stigma is correlated with intimate relations in both bipolar and schizophrenia patients.

The relationship between the presence of ADHD and certain candidate gene polymorphisms in a Turkish sample.

Due to the high heritability of attention-deficit hyperactivity disorder (ADHD), parents of children with ADHD appear to represent a good sample group for investigating the genetics of the disorder. The aim of this study was to investigate the association between ADHD and six polymorphisms in five candidate genes [5-HT2A (rs6311), NET1 (rs2242447), COMT (rs4818), NTF3 (rs6332), SNAP-25 (rs3746544) and (rs1051312)]. We included 228 parents of children diagnosed with ADHD and 109 healthy parents as the control group. The polymorphisms were genotyped using polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP) assays and analyzed using the chi-square test and the multinomial logit model. SNAP-25 (rs3746544) polymorphism was associated with loading for ADHD, while 5-HT2A (rs6311) and NET1 (rs2242447) polymorphisms were associated with ADHD. On the other hand, there was no significant association between the SNAP-25 (rs1051312), NTF3 (rs6332), or COMT (rs4818) gene polymorphisms and ADHD. In addition, we found that even if variation in the SNAP-25 gene alone does not affect the phenotype, it may nevertheless lead to the emergence of a clinical ADHD picture in the presence of other genetic factors. Our findings suggest that a combination of NET1 (rs2242447) and SNAP-25 (rs3746544) is a risk factor for ADHD. Problems associated with the noradrenergic and serotonergic systems and SNAP-25 may play a role, both alone and in interaction with one another, in the pathophysiological mechanisms of ADHD.

Neuropsychological Weaknesses in Adult ADHD; Cognitive Functions as Core Deficit and Roles of Them in Persistence to Adulthood

Prior investigations have shown that individuals with attention deficit hyperactivity disorder (ADHD) have impaired neuropsychological functions. This study had two aims, first to investigate weakened cognitive functions in adult ADHD (aADHD), and second, to investigate difference between persisters (those having persistently ongoing ADHD diagnosis in adulthood), and remitters (those having ADHD diagnosis only in childhood and not in adulthood), in terms of cognitive deficits. We evaluated performance on a comprehensive neuropsychological battery in three groups including 34 persisters, 35 remitters, and 35 healthy control group (absence of childhood and adulthood ADHD diagnosis). Our findings showed that adults with ADHD have inefficient attention, interference control and set-shifting functions, which may be revealed on neuropsychological tests that require greater cognitive demand. Given the finding that interference control deficit exists across the lifespan in people with ADHD, we suggest that interference control-associated functional weakness may be a core deficit for ADHD. (JINS, 2012, 18, 1-8).

Temperament and character traits in patients with bipolar disorder and associations with attempted suicide

OBJECTIVE This study was intended to investigate temperament and character traits in bipolar disorder patients with or without a history of attempted suicide. METHODS One hundred nineteen patients diagnosed with euthymic bipolar disorder based on Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision, and with no accompanying Axis I and II comorbidity, and 103 healthy controls were included. Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Axis I and II disorders were used to exclude Axis I and II comorbidity. Temperament and character traits of bipolar patients with a history attempted suicide (25.2%, n = 30) or without (74.8%, n = 89) and of the healthy volunteers were determined using the Temperament and Character Inventory. The association between current suicide ideation and temperament and character traits was also examined. RESULTS Bipolar patients with or without a history of attempted suicide had higher harm avoidance (HA) scores compared with the healthy controls. Persistence scores of bipolar patients with no history of attempted suicide were lower than those of the healthy controls. Self-directedness (SD) scores of the bipolar patients with a history of attempted suicide were lower than those of patients with no such history. Self-transcendence scores of bipolar patients with no history of attempted suicide were lower than those of both the healthy controls and of those patients with a history of attempted suicide. A positive correlation was determined between current suicidal ideation scale scores and HA, and a negative correlation between SD and cooperativeness was determined. CONCLUSIONS High harm avoidance may be a temperament trait specific to bipolar disorder patients. However, it may not be correlated with attempted suicide in such patients. These may have low persistence, high SD and low self-transcendence temperament and character traits that protect against attempted suicide. Harm avoidance, SD, and cooperativeness may be correlated with current suicidal ideation.

A comparison of the neutrophil-lymphocyte, platelet-lymphocyte and monocyte-lymphocyte ratios in schizophrenia and bipolar disorder patients – a retrospective file review

Abstract Neutrophil-lymphocyte ratio (NLR), platelet-lymphocyte ratio (PLR) and monocyte-lymphocyte ratio (MLR) have recently been used as indicators of inflammation. Higher MLR and PLR values have been determined in the euthymic and manic periods in patients with bipolar disorder compared to a control group. High NLR values were determined in the only study investigating this ratio in schizophrenia patients. The purpose of this study was to compare NLR, PLR and MLR values and complete blood count elements in patients receiving treatment and hospitalized due to schizophrenic psychotic episode and bipolar disorder manic episode. All patients meeting the inclusion criteria among subjects receiving treatment and hospitalized due to schizophrenia-psychotic episode and bipolar affective disorder-manic episode at the Ondokuz Mayıs University Medical Faculty Psychiatry Department, Turkey, in 2012–2016 were included in our study. A total of 157 healthy donors were included as a control group. White blood cell (WBC), neutrophil, lymphocyte, platelet and monocyte numbers were noted retrospectively from complete blood counts at time of admission, and NLR, PLR and MLR were calculated from these. NLR, PLR and MLR values and platelet numbers in this study were higher and lymphocyte numbers were lower in bipolar disorder patients compared to the controls. Elevation in NLR, MLR and PLR values and neutrophil numbers and lower lymphocyte numbers were determined in schizophrenia patients compared to the controls. Higher NLR and MLR values were found in schizophrenia patients compared to bipolar disorder. Findings of our study supported the inflammation hypothesis for schizophrenia and bipolar disorder.

Association between emotional and behavioral problems and metabolic control in children and adolescents with Type 1 diabetes.

Objective: We aimed to investigate the differences in emotional and behavioral problems and to explore the association between the level of psychiatric problems and the metabolic control in Type 1 diabetes. Methods: The children with Type 1 diabetes (no.=42) and the “healthy” control group (no.=42), their parents and endocrinology specialist completed the forms prepared for the study. The parents completed the Child Behavioral Checklist (CBCL/4-18). Results: The groups had significant differences in CBCL-activities (p<0.001), social competence (p<0.001), total competences (p<0.001), withdrawal (p=0.036), anxiety/depression (p=0.033), social problems (p=0.009), and aggressive behavior (p=0.04) scores. We did not find significant differences in CBCL scores between the groups with good, moderate and bad metabolic control (p>0.05). Discussion: The parents of children with Type 1 diabetes reported emotional and behavioral problems significantly more. We did not find any significant association between the level of metabolic control and the emotional and behavioral problems.