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Gulec M.Y.,Erenkoy Mental Research and Training Hospital | Ozalmete O.A.,Erenkoy Mental Research and Training Hospital | Ozturk M.,Psychiatric Research and Treatment Center | Gulec H.,Erenkoy Mental Research and Training Hospital | And 2 more authors.
Klinik Psikofarmakoloji Bulteni | Year: 2010

Objective: Neuropeptide Y (NPY) has been implicated in pathophysiology of anxiety and depression. It was proposed that NPY counteracts corticotropin-releasing factor-mediated stress effects to maintain emotional regulation. We investigated NPY concentrations in a sample of first episode medication-naive adolescent patients with MDD with regards to their history of suicide attempts. Method: 33 adolescents with MDD were enrolled. 11 patients were excluded due to comorbidity of another psychiatric illness. In 22 adolescents with MDD patients, the plasma concentrations of NPY were assessed. The Beck Depression Inventory-Turkish Version and the Beck Anxiety Scale- Turkish Version were used to rate the severity of depressive and anxiety symptoms. Results: Our sample of depressed patients showed lower levels of NPY compared to healthy controlsWhen the depressed patients were grouped with regards to suicidality, both groups did not show any significant differences. NPY levels were negatively correlated with duration of illness and feelings of guilt, and positively correlated with anxiety. When anxiety was taken as a covariate, significant correlations between NPY levels and feelings of guilt disappered; whereas, when duration of illness was taken as a covariate correlations were still significant. Conclusions: Adolescent depressed patients were found to have lower NPY plasma levels compared to healthy controls. Plasma NPY concentrations were decreasing with duration of illness, increasing with feelings of guilt and anxiety severity. Plasma NPY levels in adolescents MDD might indicate a predisposition to anxiety-related depression. Source

Gulec M.,Erenkoy Mental Research and Training Hospital | Gulec H.,Erenkoy Mental Research and Training Hospital | Oztuna F.,Karadeniz Technical University | Kose S.,Vanderbilt University
International Journal of Psychiatry in Medicine | Year: 2010

Objective: Psychosocial factors have been implicated as being important in the onset and/or exacerbation of asthma. This study was performed to evaluate the personality profiles of asthma patients. Method: Ninety-five asthmatic, 98 psoriatic patients, and 96 healthy controls completed the Temperament and Character Inventory (TCI), Beck Anxiety Inventory (BAI), and Beck Depression Inventory (BDI). The relationships between asthma illness duration, asthma severity score, depression, anxiety, and temperament and character personality variables were evaluated. Results: Asthmatic patients had significantly higher mean scores on the BAI, Harm Avoidance, Persistence, and Self-transcendence dimensions and lower scores on the BDI, Novelty Seeking, and Reward Dependence dimensions of the TCI than the psoriatic patients. Significant group effect was found for the BDI and BAI scores in between groups. Significant differences in TCI scores were found across groups except for Persistence and Self-transcendence. Post hoc tests revealed significantly lower Novelty Seeking, higher Harm Avoidance, lower Reward Dependence, and higher Self-transcendence scores in patients with asthma. Regression analysis revealed a significant effect between duration of illness and Persistence and Self-transcendence. Illness severity had a significant effect on the Harm Avoidance. Anxiety scores had significant effect on the Harm Avoidance, Self-directedness, and Selftranscendence. Depression scores had no significant effect on any of the TCI dimensions. Conclusions: Asthmatic patients can be distinguished by a specific pattern of temperament (low NS) and character (high ST) dimensions and compared with both psoriatic patients and healthy controls. Illness duration is associated with ST scores, and illness severity is associated with HA. © 2010, Baywood Publishing Co., Inc. Source

Ozmen H.A.,Erenkoy Mental Research and Training Hospital | Citak S.,Erenkoy Mental Research and Training Hospital | Zincir S.B.,Erenkoy Mental Research and Training Hospital | Sunbul E.A.,Erenkoy Mental Research and Training Hospital
Comprehensive Psychiatry | Year: 2014

The relatively high prevalence of the diagnosis of dissociative disorder not otherwise specified is frequently considered to be disproportionate the disproportionate rate of this diagnosis is thought to be related to nosologic and/or diagnostic issues in dissociative identity disorder. We sought to investigate and compare the symptom patterns of these two clinical entities. We conducted a cross-sectional study involving 1314 participants who were screened with the Dissociative Experience Scale (DES) and the Somatoform Dissociation Questionnaire (SDQ). Of the participants, 272 who scored above the cut-off points for the screening questionnaires (DES score > 30 and/or SDQ score > 40 points) were invited to complete a structured interview using the Dissociative Disorders Interview Schedule (DDIS); of this subsample, only 190 participants agreed to participate in the second phase of the study the mean score for the DES was 18.55 ± 17.23, and the mean score for the SDQ was 30.19 ± 13.32. Of the 190 participants, 167 patients were diagnosed as having a dissociative disorder (87.8%). We found that DD-NOS was the most prevalent category of dissociative disorder there was a significantly larger percentage of patients in the DID group than in the DD-NOS group according to secondary features of DID and Schneiderian symptoms the secondary features of DID and Schneiderian symptoms appeared to be more specific for DID, while no differences were detected between DID and DD-NOS based on most of the items on the SCL 90R. Further longitudinal studies are needed to determine the features that are similar and dissimilar between DD-NOS and DID. © 2014 Elsevier Inc. Source

Atasoy H.,Yeditepe University | Gulec-Yilmaz S.,Yeditepe University | Ergen A.,Istanbul University | Gormus U.,Istanbul Science University | And 11 more authors.
In Vivo | Year: 2015

Background/Aim: Reactive oxygen species (ROS) are involved in the development of certain neuropsychiatric disorders. Paraoxonase 1 (PON1) activity has been suggested to be adversely related to oxidative stress in plasma. The purpose of the present study was to demonstrate the relationship between serum PON1 activity and PON1 192 polymorphism in panic disorder (PD). Materials and Methods: Fourty-two patients with PD and 46 healthy controls were included in this study. PON1 192 genotypes were determined by polymerase chain reaction- restriction fragment length polymorphism (PCR-RFLP) analysis. PON1 activity was measured by spectrophotometric assay of p-nitrophenol production following the addition of paraoxon. Results: PON1 192 AA genotype and A allele in PD were significantly higher than in the control group, whereas the B allele was found to be significantly higher in the control group. Patients with panic disorder have lower PON1 activity than the control group. Conclusion: The PON1 192 AA genotype may increase the risk of PD depending on lipid peroxidation. Source

Gulec-Yilmaz S.,Yeditepe University | Gulec H.,Erenkoy Mental Research and Training Hospital | Dalan A.B.,Yeditepe University | Cetin B.,Erenkoy Mental Research and Training Hospital | And 6 more authors.
In Vivo | Year: 2014

Background: The angiotensin converting enzyme (ACE) gene, which has been found to have an insertion and deletion polymorphism (I/D), is of increasing interest in etiology and treatment of various psychiatric disorders such as panic disorder. The present study aimed to investigate the relationship between ACE polymorphism and panic disorder. Materials and Methods: In this study, 43 patients diagnosed with panic disorder at the Erenköy Mental and Neurological Diseases Training and Research Hospital, Istanbul and 41 healthy controls were enrolled. The ACE gene insertion/ deletion polymorphism of exon 16 was evaluated using the polymerase chain reaction method. Results: There was a significant association between I/D genotype and panic disorder (p=0.003). However, the frequency of the I allele was found to be significantly higher in patients compared to controls (p=0.002). In addition, we recognized a significant association between I/D polymorphism and respiratory-type panic disorder in patients. Carriers of the D allele also had an increased risk of respiratory type panic disorder patients (p=0.034). Moreover, the result of Spearman correlation analysis showed an association with ACE D allele and severity of panic disorder (p<0.001). Conclusion: We suggest that the I/D polymorphism of the ACE gene is associated with panic disorder and particularly respiratory-type panic disorder in patients. The I/D polymorphism of the ACE gene seems to influence therapeutic outcome in patients suffering from panic disorder. Our results indicate that ACE D allele is associated with the severity of panic disorder. Source

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