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Dive into the research topics where Ozkan Guler is active.

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Featured researches published by Ozkan Guler.


Progress in Neuro-psychopharmacology & Biological Psychiatry | 2007

Ghrelin and leptin levels in patients with obsessive–compulsive disorder

H. Murat Emül; Mustafa Serteser; Erhan Kurt; Omer Ozbulut; Ozkan Guler; Omer Gecici

To examine the importance of ghrelin and leptin in the pathogenesis of obsessive-compulsive disorder (OCD), we measured serum ghrelin and leptin levels, lipid profile and body mass index (BMI) in 43 patients with OCD and 20 healthy controls. The patients were divided into two subgroups according to whether DSM-IV OCD was accompanied with major depressive disorder (MDD) (OCD+MDD) or not (OCD-MDD). There was no statistically significant difference in ghrelin and leptin levels between groups. The OCD+MDD group had a trend of higher ghrelin levels and lower leptin levels than the OCD-MDD and control groups. There was a negative correlation between change in serum ghrelin and leptin levels only in the OCD+MDD group. Neither ghrelin nor leptin showed any correlation with severity of MDD and OCD. In conclusion, our results suggest that OCD is not associated with leptin or ghrelin levels. More comprehensive and detailed studies are needed to decipher the exact role of ghrelin and leptin in OCD.


Dermatology | 2007

Temperament and character profile in patients with essential hyperhidrosis.

Semsettin Karaca; Murat Emul; Mustafa Kulac; Seref Yuksel; Omer Ozbulut; Ozkan Guler; Omer Gecici

Background/Aims: The main debates on hyperhidrosis are whether there are some personality features such as anxiety or stress, or whether the psychological symptoms are due to negative social feedback from early life. We aimed to investigate the temperament and character dimensions with a psychobiological inventory. Methods: We recruited patients with hyperhidrosis (n = 26) and chronic renal failure (n = 44) as well as healthy subjects (n = 22) from dermatology and nephrology clinics and the general population in Afyonkarahisar. All subjects were required to perform a temperament and character inventory. Results: The total novelty seeking score in hyperhidrosis was significantly lower than in controls. There was no significance in total harm avoidance scores between hyperhidrosis patients and controls. The total reward dependence and persistence scores were significantly higher in hyperhidrosis patients. The fear of uncertainty in the harm avoidance scale was found to be significantly greater in hyperhidrosis patients. Regarding character dimensions, the total score in each of the subscales self-directedness, cooperativeness and self-transcendence was found to be higher in hyperhidrosis patients. Conclusion: The higher scores of all subscales of character dimensions in hyperhidrosis patients suggest that hyperhidrosis is not related with social phobia or personality disorder.


Comprehensive Psychiatry | 2008

The prevalence of panic disorder in pregnant women during the third trimester of pregnancy

Ozkan Guler; Figen Kir Sahin; H. Murat Emül; Omer Ozbulut; Omer Gecici; Faruk Uguz; Kazım Gezginç; Ismet Esra Zeytinci; Savas Karatayli; Rustem Askin

OBJECTIVE The principal aim of this study was to assess the current prevalence rate of panic disorder (PD) in pregnant women during the third trimester of pregnancy. The second aim of the present study was to investigate the clinical characteristics of PD in pregnant and nonpregnant women. METHOD The study data were gathered from 512 consecutive women in the third trimester of pregnancy who were admitted to the obstetric outpatient clinics of 2 university research centers. The diagnosis of PD was determined by means of the Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition Axis I disorders in the third trimester of pregnancy. Within the same period, the Panic and Agoraphobia Scale was used to determine the severity of PD. In addition, we compared the clinical characteristics of PD in gravid subjects (n = 13) with their control group. A control group was composed of 19 consecutive nonpregnant female outpatients diagnosed with PD who presented to the psychiatric outpatient clinics of the same hospitals. RESULTS The prevalence rate of PD was found to be 2.5% (n = 13) among the subjects in the third trimester of pregnancy. Of these 13 pregnant, 7 subjects reported that PD developed during the 6th to 28th weeks of their gestation, and the number of subjects who experienced PD symptoms before pregnancy was 6. In addition, there was no statistically difference between gravid and nongravid PD cases with regard to the severity of panic symptoms. CONCLUSION Our study suggests that PD may be common among pregnant females during the third trimester of pregnancy and seems to be associated with similar clinical features during gestation and nongestation.


Klinik Psikofarmakoloji Bulteni-bulletin of Clinical Psychopharmacology | 2010

Phenomenology of Delusions and Hallucinations in Patients with Schizophrenia

Omer Gecici; Murat Kuloglu; Ozkan Guler; Omer Ozbulut; Erhan Kurt; Sinay Önen; Okan Ekinci; Dilek Yesilbas; Ali Çayköylü; Murat Emul; Gazi Alatas; Yakup Albayrak

ABSTRACTBackground: The aim of this study is to investigate the influence of living in different geographic regions of the same country on the phenomenology of schizophrenic delusions and hallucinations in two groups of schizophrenic patients.Methods: A total of 373 schizophrenic patients hospitalized in three different psychiatric hospitals in Turkey were recruited, and their delusions were classified by using the classification system developed by Huber and Gross. Patients were categorized with respect to regions in which they lived. Group 1 represented the Western region of Turkey, and group 2 represented the Central region of Turkey.Results: Delusions of persecution and reference were detected frequently in both genders and groups. Delusions of poisoning and erotomania were more prevalent in females than in males. The most frequent auditory hallucinations included hearing voices conversing and voices commenting. Seeing goblins was the most prevalent theme in visual hallucinations.Conclusions: The resu...


International Journal of Psychiatry in Clinical Practice | 2008

The impact of obsessive-compulsive disorder in pregnancy on quality of life

Kazım Gezginç; Faruk Uguz; Savas Karatayli; Esra Zeytinci; Rustem Askin; Ozkan Guler; Figen Kır Şahin; H. Murat Emül; Omer Ozbulut; Omer Gecici

Aim. To examine the effects of obsessive-compulsive disorder (OCD) on quality of life in pregnant women. Material and method. Twenty-five pregnant women diagnosed as OCD in two university outpatient clinics were included for the study. Twenty-five pregnant women with no mental disorders and the same sociodemographic properties were taken as the control group. The diagnosis of OCD was confirmed with the DSM-IV Axis-I Disorders Structured Clinic Interview Diagnosis/Clinic Version (SCID-I/CV). In order to measure the severity of OCD Yale-Brown Obsession and Compulsion Scale was performed. Quality of life was evaluated by WHO (World Health Organisation) Life Quality Scale – Short Form (WHOQOL-Brief). Results. The whole subgroup of points of WHOQOL-Brief was significantly lower in OCD patients compared to control group (in all subgroups P<0.01). There was a negative correlation between the Y-BOCS obsession and compulsion subpoints and total points with the physical health (P <0.05), psychological health (P <0.001) and social relationship (P <0.01) of WHOQOL-Brief. No significant association was found with enviromental areas. Besides, there was a negative correlation between the duration of OCD and WHOQOL-Brief psychological health subarea (P <0.05). Conclusion. OCD negatively effects the quality of life in pregnant women and is correlated with the severity of the disorder.


Journal of Psychopharmacology | 2009

Is valproate promising in cardiac fatal arrhythmias? Comparison of P- and Q-wave dispersion in bipolar affective patients on valproate or lithium–valproate maintenance therapy with healthy controls

Kurt E; Murat Emul; Omer Ozbulut; Ozkan Guler; Erdur F; Sağlam H; Omer Gecici

Autonomic nerve system is considered to be involved in bipolar affective disorder (BAD) or to be influenced by valproate monotherapy or valproate plus lithium combination. We planned to assess the effects of medication on atrial and ventricular conduction. The electrocardiography records were performed with eligible 15 patients with valproate, 20 patients with lithium–valproate combination use in euthymic phases of BAD and 20 healthy participants. The blood valproate and lithium concentrations in groups were in normal range. The difference in P maximum, P minimum, maximum QTc were statistically insignificant. Minimum QTc (F = 6.36; df = 2; P = 0.003) and QT dispersion (QTD) (F = 5.57; df = 2; P = 0.006) were statistically significant among the groups. There were no significant differences between patient groups among ECG parameters. Minimum QTc was significantly longer in combination group than healthy controls, whereas the QTD values in both patient groups were significantly lower than controls’. Valproate might have some preventive effects on ventricular electrical conduction because of lower QTD in both patient groups. Thus, valproate seems to have cardiac conduction stabilizing effect beside its mood stabilizing aspect. However, this finding needs replication and further corroboration in well-designed studies.


Psychogeriatrics | 2008

Tardive dyskinesia with ziprasidone and citalopram use in an elderly female patient

Omer Ozbulut; Murat Emul; Ozkan Guler; Omer Gecici

Tardive dyskinesia (TD) is occasionally an irreversible condition caused by antipsychotic treatment. Second‐generation antipsychotics are considered to have less extrapyramidal effects, including causing TD. Herein, we present a case of TD following ziprasidone use. A 67 year‐old woman started to hear voices and ‘see’ people speaking to her, especially while praying. She presented to our clinic with anxiety, anhedonia, dysphoria, and auditory hallucinations. She was admitted with a diagnosis of depressive disorder with psychotic features. Citalopram 20 mg/day and ziprasidone 40 mg b.i.d. were started. After her symptoms had been relieved, the patient was was discharged and with monthly follow up. At her first visit 1 month after discharge, orofacial dyskinesia was found on physical examination. Ziprasidone may be associated with TD, even in someone who has never been exposed to a traditional neuroleptic. However, concomittant treatment with a serotonin reuptake inhibitor in the present case may have favored the appearance of TD.


Journal of Psychophysiology | 2008

Evaluation of Serum Ghrelin and Leptin Levels in Suicide Attempters

Erhan Kurt; Ozkan Guler; Omer Ozbulut; Kürşat Altınbaş; Melek Işingör; Mustafa Serteser; Omer Gecici

Previous studies have reported a relationship between cholesterol and leptin levels, and suicide attempts, impulsivity, and aggressive behaviors. An orexigenic hormone seems to be strongly associated with lipid metabolism and leptin levels. Therefore, we aimed to compare serum cholesterol, leptin, and ghrelin levels in 36 patients with suicide attempts and 25 healthy controls. Patients with suicide attempts had decreased leptin levels and significantly higher ghrelin levels compared to healthy controls. While the serum ghrelin level did not show any correlation with the demographic and clinical factors, leptin showed a correlation with body mass index (BMI), and cholesterol levels were correlated with the age, BMI, and number of suicide attempts in the suicidal group. The results suggest that suicide attempts seem to be related with higher serum ghrelin values, decreased leptin, and cholesterol levels.


Noro Psikiyatri Arsivi | 2015

Pregnancy-Onset Panic Disorder: Incidence, Comorbidity and Associated Factors

Ozkan Guler; Veli Kaya; Fatih Kayhan; Önder Sönmez

INTRODUCTION The present study aimed to investigate the incidence rate of pregnancy-onset panic disorder (POPD) among Turkish pregnant women using a diagnostic interview. Additionally, we examined whether the independent socio-demographic or clinical risk factors were associated with the risk of panic disorder in these women. METHODS The study sample comprised 1475 consecutive pregnant women who presented to the obstetric outpatient clinics of two research centers. The rate of POPD in these participants was 1.3% (Group 1, n=20). The 20 women with POPD were compared with 250 pregnant women without pregnancy-onset depression or anxiety (Group 2; controls). Panic disorder and other anxiety or mood disorders were determined by means of the Structured Clinical Interview for DSM-IV. Comorbid Axis II disorders were diagnosed with the Structured Clinical Interview for DSM-III-R Personality Disorders. RESULTS The incidence rate of panic disorder was 1.3% (n=20). In group 1, 55% (n=11) of the women with POPD had an additional mood or anxiety disorder. In addition, the prevalence rate of any cluster C personality disorder, including avoidant, passive-aggressive and obsessive-compulsive personality disorders, were significantly greater in the group 1 women with POPD than the control pregnant women without a panic disorder (group 2). CONCLUSION The women with POPD were more likely than the controls to have a cluster C Axis II disorder and a history of a pre-existing anxiety or mood disorder.


Comprehensive Psychiatry | 2007

Obsessive-compulsive disorder in pregnant women during the third trimester of pregnancy.

Faruk Uguz; Kazım Gezginç; Ismet Esra Zeytinci; Savas Karatayli; Rustem Askin; Ozkan Guler; Figen Kir Sahin; H. Murat Emül; Omer Ozbulut; Omer Gecici

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Omer Ozbulut

Afyon Kocatepe University

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Figen Kir Sahin

Afyon Kocatepe University

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