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Fisun Akdeniz

Publications and source records attributed to Fisun Akdeniz.

15 recordsLinked to original sources
PubMed2006

Sustained attention deficits in manic and euthymic patients with bipolar disorder.

Sustained attention deficits are proposed to be both state and trait indicators of bipolar disorder. The nature of these deficits and their association with medication and symptoms is not clear yet. The aim of this study was to investigate the impairments in various components of sustained attention task in euthymic and manic patients and was to investigate the relationship between the deficits in the manic state and medication effects. The performances of 37 manic patients, 34 euthymic patients with bipolar disorder and 34 control subjects on eight scores from Conners' CPT II, reflecting three different dimensions of sustained attention were compared. Similar to some recent findings, euthymic patients had decreased target sensitivity (omission errors) and response time inconsistency. The increased false responding (commission errors), perseveration and vigilance deficits were prominent in the manic patients. These state dependent impairments could not be explained by the impact of medication. In contrast, the exacerbation of seemingly trait-related impairments in the manic state can be at least partly explained by the impact of pharmacological therapy.

Adult↗
PubMed2006

[Does menstrual cycle affect mood disorders?].

OBJECTIVE: This paper will present a review of the literature on the relationship between the menstrual cycle and mood disorders. METHOD: We performed a MEDLINE search of the Turkish and English language literature for the years 1955-2005 using the following terms: depression, bipolar disorder, premenstrual syndrome, premenstrual exacerbation, premenstrual dysphoric disorder, menstrual cycle, and suicide. Earlier reports had shown higher psychiatric admission during premenstrual period of the menstrual cycle and higher prevalence of suicide attempts during specific phase of the menstrual cycle. RESULTS: Women of reproductive age with mental disorders may experience a fluctuating course of illness over the menstrual cycle. Some data suggest that for a subset of women there is a relationship between phases of the menstrual cycle and increased vulnerability for an exacerbation of ongoing mood disorders (especially major depressive episode) or the development of a new episode. The question of whether the direction of mood shifts in the course of bipolar disorder is associated with specific cycle phase has been raised, albeit with limited and inconsistent data. CONCLUSION: There are a limited number of studies to elucidate these relationships and most of them lack prospective assessments, include the small number of patients and use unreliable methods of determining menstrual-cycle phases. Additionally, many reports do not specify whether the exacerbations reflect an aggravation of the underlying mood disorder or a new subset of symptoms that occur only during certain phases of the menstrual cycle. Further studies should provide more information about the contribution of premenstrual fluctuation or worsening to increased illness severity of mood disorder and treatment resistance.

Adult↗
PubMed2005

The effect of antidepressant treatment on N-acetyl aspartate levels of medial frontal cortex in drug-free depressed patients.

The medial frontal cortex has been shown to modulate emotional behavior and stress responses, suggesting that the dysfunction of this region may be involved in the pathogenesis of depressive symptoms. The present study was performed to determine whether there was any effect of antidepressant treatment on the metabolite levels in the left medial frontal cortex as measured by proton magnetic resonance spectroscopy in depressed patients. Twenty patients diagnosed as having major depressive disorder according to DSM-IV and 18 healthy volunteer subjects were included in the study. Twelve of patients had their first episode and were drug-naïve. Other depressed patients were drug-free for at least 4 weeks. The severity of depression was assessed by HAM-D and Clinical Global Impression Scale-Severity (CGI-S). Single voxel, 8 cm(3), 1H MR spectra of left medial frontal cortex was acquired both before and following antidepressant treatment. The concentrations and ratios of N-acetyl aspartate (NAA), Creatine+Phosphocreatine (Cr+PCr) and Choline (Cho) were measured. Pretreatment NAA/Cr values of patients were lower than those of healthy controls, but this difference did not reach to statistically significant levels (t=1.83, df=36, p=0.07). However, antidepressant treatment had significant effect on NAA/Cr ratios (groupxtreatment interaction: F=9.93 df=1,36, p=0.03). After the treatment, NAA/Cr values of patients increased significantly compared to pretreatment values (t=3.32, df=19, p=0.004). No significant difference was observed between the post-treatment NAA/Cr values of patients and those of controls (t=1.64, df=36, p=0.19). Correlation analysis detected negative correlation between pretreatment CGI-S scores and NAA/Cr ratios (r=-0.51, p=0.02). This preliminary result suggests that there might be a possible defect in the neuronal integrity in the left medial frontal cortex (mainly left anterior cingulate cortex) of depressed patients. Antidepressant treatment with its neurotrophic effects might play a positive role in restoring the neuronal integrity. Further studies are needed to support these initial findings.

Adult↗
PubMed2005

Effect of treatment on serum brain-derived neurotrophic factor levels in depressed patients.

Researchers have reported that serum brain-derived neurotrophic factor (sBDNF) of drug-free depressed patients are lower than those of healthy controls and proposed that low sBDNF levels might reflect failure of neuronal plasticity in depression. In this study, we compared sBDNF levels of depressed patients (n = 28) before and after 8 weeks of antidepressant treatment, with those of healthy controls (n = 18) to test the hypothesis that initially low sBDNF levels of drug-free depressed patients will increase parallel with their clinical response to antidepressant treatment. The severity of depression and response to treatment were assessed with Hamilton Rating Scale for Depression (HAM-D). sBDNF was assayed with the sandwich ELISA method. Baseline sBDNF levels of patients (mean, 20.8 ng/ml; [S.D., 6.7]) were significantly lower than those of controls (mean, 26.8 ng/ml; [S.D., 9.3]; p = 0.015), and were negatively correlated with HAM-D scores (r = -0.49, p = 0.007). After 8 weeks of treatment, sBDNF levels of patients had increased significantly (mean, 33.3 ng/ml; [S.D., 9.9]; p < 0.001) and no longer differed from those of controls. These results support the hypothesis that BDNF might play a critical role in the pathophysiology of major depressive disorder and successful antidepressant treatment increases the attenuated BDNF levels in depressed patients.

Adult↗
PubMed2005

Affective temperaments as measured by TEMPS-A in patients with bipolar I disorder and their first-degree relatives: a controlled study.

BACKGROUND: The aims of this study were to identify the dominant affective temperamental characteristics of patients with bipolar disorder (BP) and their clinically well first-degree relatives and to compare the prevalence rates of these temperaments with those in healthy control subjects. METHODS: One hundred bipolar I probands and their 219 unaffected first-degree relatives were enrolled in the study. The control group consisted of healthy subjects without any personal or family history of bipolar disorder, matched with the age and gender of the probands and first-degree relatives. To identify the dominant affective temperaments, the Turkish version of TEMPS-A scale was used. RESULTS: At least one dominant temperament was found in 26% of the proband group, in 21.9% of the relative group, and 6.0% and 10.0% of the control groups, respectively. The most noteworthy finding was that both the probands and their relatives had significantly higher frequency of hyperthymic temperament than the controls. LIMITATIONS: Temperament had not been assessed premorbidly in the probands with bipolar disorder. CONCLUSIONS: The study supports the familial, possibly genetic, basis for the hyperthymic temperament in the genesis of bipolar I dosorder. That the cyclothymic temperament was not similarly represented, may be due to the higher specificity of the cyclothymic temperament to the bipolar II sybtype (which we did not study). More research is needed on the relevance of cyclothymic and other temperaments to the genetics of bipolar disorders selected by rigorous subtyping along the clinical spectrum of bipolarity.

Adult↗
PubMed2005

[The relationship of affective temperament and clinical features in bipolar disorder].

OBJECTIVE: The aim of the present study was to investigate the relationship between affective temperaments and clinical features in bipolar disorder. Testing the relationships between phenomenological features, course, severity of episodes, overall severity of illness and comorbid conditions would clarify the reliability and validity of affective temperamental descriptions. METHODS: One hundred patients with bipolar I disorder were recruited from consecutive admissions and evaluated when euthymic. Affective temperaments were assessed with TEMPS-A Turkish version. Information about the characteristics of each patient's illness was obtained from three main sources; interview with patient (SCID-I), interview with at least one close relative and patient records. We compared the clinical features of patients with and without a specific affective temperament. RESULTS: Similar rates of cyclothymic, hyperthymic and irritable temperaments were observed in bipolar patients. Five important findings of the present study were (1) hyperthymic temperament was more frequent in males than females; (2) manic switches were more frequent among bipolar patients with hyperthymic temperament; (3) psychotic features were more common in the irritable temperament group; (4) comorbid conditions, (mostly alcohol use disorders) were more common among bipolar patients with cyclothymic temperament; and (5) bipolar patients with irritable temperament were more likely to have a manic episode at the onset of illness. CONCLUSION: These findings suggest that affective temperaments have significant clinical implications in bipolar disorder, beyond the genetic basis and predisposing factors. There were significant differences between patients with different affective temperaments in terms of gender, type of first episode, psychotic symptoms, switch and comorbidity.

Adolescent↗
PubMed2004

Low serum levels of brain-derived neurotrophic factor in patients with schizophrenia do not elevate after antipsychotic treatment.

Brain-derived neurotrophic factor (BDNF) has been suggested to be involved in the etiology of schizophrenia. There is a line of evidence that disruption of neurotrophins could play a role in the etiology of schizophrenia, and antipsychotics show their effect by altering levels of neurotrophins. The aim of this study was to evaluate the effect of antipsychotics on serum BDNF levels and their relationship with the symptoms in patients with schizophrenia. Twenty-two schizophrenia patients were enrolled in the study. The control group consisted of 22 age- and sex-matched physically and mentally healthy volunteers (7 male, 15 female). Serum BDNF levels and the positive and negative syndrome scale (PANSS) scores were recorded at baseline and after 6 weeks of treatment. Serum BDNF levels were also recorded in the control group. Schizophrenia patients who failed to meet 30% improvement in PANSS score were excluded from the study. The baseline serum BDNF levels of schizophrenia patients were lower than those of controls (t = 4.56; df = 21; p < 0.001). There was no correlation between serum BDNF levels and PANSS scores in patients with schizophrenia (p > 0.05). Although PANSS (for positive symptoms p < 0.001, for negative symptoms p < 0.001) and general psychopathology (t = 20.9; df = 22; p < 0.001) scores improved significantly after 6 weeks of antipsychotic treatment; there was no change in BDNF levels in patients' serum (p > 0.05). Our results support the view that BDNF would be associated with schizophrenia. However, we could not conclude that treatment with antipsychotics alters serum BDNF levels in patients with schizophrenia.

Adolescent↗
PubMed2004

Menstrually related symptom changes in women with treatment-responsive bipolar disorder.

OBJECTIVE: In the present study, we aimed to evaluate menstrually related symptom changes in euthymic women with treatment-responsive bipolar disorder (BD) compared with healthy control subjects and investigate the presence of premenstrual dysphoric disorder (PMDD). METHODS: Thirty-four euthymic women with treatment-responsive BD on mood-stabilizers (lithium and/or valproate) for at least 6 months and 35 control subjects with no history of medical/mental disorder between ages of 18 and 35 years with regular menstrual cycles were prospectively followed up for at least two consecutive menstrual cycles using the Daily Record of Severity of Problems-Short Form (DRSP). Each subject was administered the retrospective self-report questionnaire, Premenstrual Assessment Form (PAF), in the first postmenstrual phase of the menstrual cycle. Venous blood samples were collected between 19 and 22 days of menstrual cycle to evaluate ovulation by measuring the serum progesterone levels. RESULTS: The differences in mean age, age of onset of menses, cycle length and bleeding length did not appear to be significantly meaningful between groups. In the retrospective assessment of premenstrual symptom changes, controls complained more than women with BD. More controls showed a 30% change in DRSP and in depressive and physical sub-groups than the women with BD. Controls demonstrated a significant increase compared with treatment-responsive BD patients in total, depressive, anxiety and attention sub-group scores of DRSP from the postmenstrual to the premenstrual phase, whereas the scores of vegetative symptoms of controls and women with BD did not differ significantly during one cycle or both. Significant menstrual cycle effect was observed in both groups. CONCLUSION: Within the limitations of the study, the results suggest that ongoing mood-stabilizing treatment may have a prophylactic effect against premenstrual symptom changes in women with treatment-responsive BD.

Adolescent↗
PubMed2004

Is obesity a risk factor for psychopathology among adolescents?

BACKGROUND: Although several studies have documented the existence of psychopathology in obese adolescents, disagreement remains regarding the extent and nature of this psychopathology. The aim of the present study was to explore the type and frequency of psychopathology in a clinical as well as a non-clinical sample of obese adolescents, and in a normal weight control group. METHODS: The study sample consisted of a clinical study group of 30 obese adolescents, a non-clinical obese group of 30 obese adolescents, and a control group of 30 normal weight adolescents. Psychological assessment was performed using a non-structured psychiatric interview, the Child Behavior Checklist (CBCL), Children Depression Inventory (CDI), Rosenberg Self-esteem scale (SES) and the Eating Attitude Test (EAT). RESULTS: More than half of the clinical obese adolescents (16/30) had a DSM-IV diagnosis, often involving major depressive disorder (n = 10). The mean scores of anxiety-depression, social problems, social withdrawal and total problem in the CBCL scale of the clinical obese group were significantly higher than the non-clinical obese group and the normal weight control group. The mean total scores of the SES and the CDI of the clinical obese group were higher than the normal weight control group. The mean total score of EAT of the clinical obese group was significantly higher than the normal weight control group, and the mean score of EAT of the non-clinical obese group was significantly higher than the normal weight control group. CONCLUSIONS: The results support previously published reports which show a higher ratio of psychopathology (depression, behavioral problems, low-esteem) among clinical obese adolescents than among non-clinical obese adolescents. Findings provided evidence for a psychosocial at-risk population in a subgroup of obese adolescents.

Adolescent↗
PubMed2004

[Is there a relationship between mood disorders and affective temperaments?].

OBJECTIVE: The aim of this study is to investigate whether depressive (DT), hyper thymic (HT), cyclothymic (CT), irritable and anxious temperaments as identified by Turkish version of Temperament Evaluation of Memphis, Pisa, Paris and San Diego Auto questionnaire (TEMPS-A) are characteristic to depressive or bipolar disorder (BD) and to compare underlying affective temperamental differences. METHOD: 68 patients with recurrent major depression (MD-R), 50 patients with single episode major depressive disorder (MD-S), 84 euthymic bipolar patients and 100 healthy controls were included in the study and evaluated with TEMPS-A. RESULTS: There was a gender difference between patient groups. The females were more dominant in the MD-R group. The mean age of onset of illness of bipolar patients was lower than the depressive patients and the mean duration of illness of bipolar patients was longer than those of the MD-R patients. The prevalence of the rate of any dominant affective temperament was significantly higher in the MD-R group than other study groups. The prevalence rate and scores of DT were significantly higher both in MD-R and MD-S groups (25.0% and 12.0% respectively) than the BD group (2.4%) and control subjects (3.0%). The prevalence rate and scores of CT were higher among the patients groups than the controls. None of the subjects except BD patients had HT. CONCLUSION: With the limitations of the study, it is thus reasonable to speculate that affective temperament, to a degree, determine the nature and the existence of the mood disorders.

Adult↗
PubMed2003

Valproate-associated reproductive and metabolic abnormalities: are epileptic women at greater risk than bipolar women?

OBJECTIVE: Evidence indicates that valproate (VPA) may have an adverse impact on reproductive endocrine and metabolic functions in women with epilepsy. This study explores whether the association of VPA with reproductive endocrine abnormalities is applicable to women with bipolar disorder (BD) or is unique to women with epilepsy. METHODS: Thirty female patients aged 18-40 years with a DSM-IV diagnosis of BD (15 on lithium monotherapy and 15 on VPA monotherapy or VPA in combination with lithium therapy) and 15 with idiopathic generalized epilepsy (IGE) on VPA monotherapy were evaluated for reproductive endocrine functioning and metabolic parameters. RESULTS: The menarche age, mean length of menstrual cycle and mean length of menses were not significantly different between groups. None of the bipolar patients on lithium, three (20%) of the bipolar patients on VPA and seven (47%) of the epileptic patients on VPA reported menstrual disturbances. Hirsutism scores of the epilepsy group were significantly higher than those bipolar women, regardless of treatment. Serum total testosterone levels were significantly higher in patients (both with BD and with IGE) treated with VPA than in those treated with lithium. Serum FSH levels were significantly lower and LH-to-FSH ratio was significantly higher in patients with epilepsy than in patients with BD, regardless of treatment. The weight parameters and lipid values investigated did not differ significantly between the groups. CONCLUSION: The study supports the conclusion that VPA may be associated with menstrual abnormalities and increased total testosterone levels in both bipolar and epileptic patients although women with BD did not show clinical features of hyperandrogenism (menstrual abnormalities, hirsutism and truncal obesity) as did frequently as women with epilepsy.

Adult↗
PubMed2003

Selective serotonin reuptake inhibitors combined with venlafaxine in depressed patients who had partial response to venlafaxine: four cases.

One third of depressive patients show partial or no response to antidepressant treatment. With partial or nonresponders, treatment strategies are as follows: switching to another antidepressant, augmenting with other psychotropic agents, or combining antidepressants. There are no data in the literature about the positive effect of combining venlafaxine with selective serotonin reuptake inhibitors (SSRIs). In this report, the presented cases had been on at least two different classes of antidepressant medication (or combination of antidepressants) for an adequate time and dose. They showed only a partial response to high dose of venlafaxine but improved after the addition of an SSRI (sertraline, citalopram, or paroxetine) to venlafaxine. The combination treatment was well tolerated in all of the cases.

Adult↗
PubMedDate not supplied

Serum nitric oxide metabolite levels and the effect of antipsychotic therapy in schizophrenia.

BACKGROUND: Recently it was proposed that nitric oxide metabolites (NO) may have a role in the pathophysiology of schizophrenia and major depressive disorders. The present study was performed to assess changes in serum nitric oxide metabolite levels in schizophrenic patients compared with healthy controls. Our secondary aim was to further evaluate the impact of psychopharmacologic treatment on circulating NO levels not assessed previously. METHODS: Serum NO levels of patients with schizophrenia (n=20) before and after 6 weeks of treatment were compared with those of healthy controls (n=20). Severity of schizophrenia and response to treatment were assessed with positive and negative symptoms of schizophrenia. NO levels were estimated by Griess method in serum samples. RESULTS: In patients with schizophrenia, pre-treatment serum NO levels were higher than those of control subjects (39.15 +/- 18.24 vs. 25.40 +/- 5.83 micromol/L, p=0.036) and also of post-treatment values (34.41 +/- 16.35 vs. 25.40 +/- 5.83 micromol/L, p=0.049), respectively. However, no significant difference was found between serum NO levels in pre- and post-treatment values. CONCLUSIONS: Our findings of increased serum NO levels in schizophrenic patients confirmed the role of NO in the pathophysiology of schizophrenia. However, we found that antipsychotic drugs do not reveal significant effects on serum levels of NO in schizophrenia in a 6-week treatment regimen. Further studies with longer therapy periods may suggest some new clues for novel treatment strategies employing antioxidants and NOS inhibitors in schizophrenia.

Adolescent↗
PubMedDate not supplied

Risk factors associated with childbearing-related episodes in women with bipolar disorder.

OBJECTIVE: For the onset of illness and possible recurrence during the childbearing period, women with bipolar disorder (BD) are at a higher risk. The aim of this study was to evaluate the impact of clinical and psychosocial factors associated with pregnancy and the postpartum period on the course of BD. METHODS: The childbearing and illness history of 72 women with BD were assessed to determine mood episodes related to the childbearing period. Data was analyzed to evaluate the risk factors (clinical, obstetric and psychosocial factors) related with mood episodes during pregnancy and the postpartum period. RESULTS: Data of 252 pregnancies and childbirths of 72 women with BD were included in the analysis. Twenty-three (32%) women with BD reported at least one mood episode during pregnancy or within 1 month after childbirth (childbearing-related episode, CBRE). Subjects with CBREs mean age at onset of illness and mean age at the time of assessment were significantly younger than subjects with N-CBRE. A lower number of women who experienced a postpartum episode after the birth of the first child chose to have the second one. Psychosocial factors during pregnancy and the postpartum period and method of delivery did not predict the first postpartum episode. Onset of illness at an early age, experiencing episode during the first pregnancy and experiencing physical problems during pregnancy predicted a mood episode during the first postpartum period. CONCLUSIONS: Interpretation of the results of the study is limited with the retrospective nature of data collection. Within the limitations, we may suggest that psychosocial factors do not play a significant role in the genesis of CBREs in women with BD.

Adult↗