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Öğe Adenosine deaminase and xanthine oxidase levels in multiple sclerosis patients(Bayrakol Medical Publisher, 2020) Gokce, Seyda Figul; Demirpence, Ozlem; Cigdem, Burhanettin; Bolayir, Asli; Ersan, SerpilAim: Multiple sclerosis represents an autoimmune, chronic, inflammatory, and demyelinating disease of the central nervous system. Inflammation and oxidative stress are considered to take a significant part in its pathogenesis. Adenosine deaminase (ADA) and xanthine oxidase (XO) enzymes, which are involved in purine metabolism, are critical for regulating inflammation and oxidative stress. Therefore, this study's goal is to evaluate the levels of these two enzymes in patients with the relapsing-remitting type of multiple sclerosis (MS) in their remission period. Material and Methods: Thirty patients with relapsing-remitting multiple sclerosis (RRMS) who were in their remission period and diagnosed in accordance with the Mc Donald 2010 criteria along with 30 healthy volunteer controls, matched with regard to age and gender, were enrolled in the research. Serum ADA levels were studied by the sensitive colorimetric method that was defined by Giusti, while XO levels were studied by the Worthington method. Results: RRMS patients had significantly higher serum ADA and XO levels compared to the control subjects (both of the P values = 0.004). Discussion: In our study, we conclude that two of the most crucial underlying pathogenic mechanisms of MS, inflammation and oxidative stress, may be associated with the increased levels of ADA and XO, and an approach of targeting the activity of these two enzymes can be considered in treatment strategies. Furthermore, we also demonstrated that ADA and XO enzymes were elevated even in the remission phases of RRMS, reflecting the continuity of inflammation through the whole course of RRMS. Thus, in this disease, which is thought to have a dynamic process, the importance of continuous immunomodulatory treatment is emphasized once again.Öğe Apelin and fetuin-a may be subclinical inflammation biomarker in familial mediterranean fever: A pilot study(DERMAN MEDICAL PUBL, 2017) Sahin, Ali; Demirpence, Ozlem; Sahin, Mehtap; Bagci, Gokhan; Seven, Dogan; Dogan, Halef Okan; Camci, Ayse; Derin, Mehmet Emin; Bagci, BinnurAim: Positive acute-phase reactants generally increase during the attack period (AP) of familial Mediterranean fever (FMF) and return to normal range in the attack-free period (AFP). In some patients, the level of these acute-phase reactants does not decrease during the AFP, suggesting that subclinical vascular inflammation continues during the AFP. In the context of this Information, we tested whether apelin and fetuin-A can be used as inflammatory biomarkers in the AFP of FMF patients. Material and Method: Thirty FMF patients within AFP and thirty healthy subjects were included in this study. Serum apelin and fetuin-a levels were measured using enzyme-linked immunosorbent assay (ELISA) method. Results: The median levels of apelin were 113.07 +/- 15.9 ng/L in FMF and 307.82 +/- 52.76 ng/L in healthy subjects (p = 0.002). The median levels of fewin-A were 1352.2 +/- 127.61 ng/mL in the FMF group and 843.82 +/- 137.66 ng/mL in the control group (p= 0.009). In FMF patients, there was a significant correlation between apelin and fetuin-A levels (r=0.399; p =0.029). Furthermore, a significant inverse correlation was found between age and apelin (r= -0.499; p = 0.005), and a significant positive correlation was found between BMI and apelin (r = 0.769; p = 0.001). Additionally, a significant correlation was found between BMI and fetuin-A (r = 0.397; p = 0.030). Discussion: Lower serum apelin levels and higher fetuin-A levels were observed in FMF patients with AFP than in healthy subjects, suggesting that subclinical vascular inflammation continues during AFP in patients with FMF. Further studies with large study populations and different ethnic groups are necessary to show the role of apelin and fetuin-A in subclinical inflammation resulting from FMF.Öğe Comparison of sulfur transferases in various tissue and mitochondria of rats with type 1 diabetes mellitus induced by streptozotocin(SPRINGER INDIA, 2016) Aydin, Huseyin; Celik, Veysel Kenan; Sari, Ismail; Tekin, Yusuf Kenan; Demirpence, Ozlem; Bakir, SevtapThis study aims to investigate the relationship between sulfurtransferase (STS) activities [rhodanese (TST), mercaptopyruvate sulfurtransferase (MST)] involved in the catalysis of several biochemical reactions including detoxification of cyanide (CN-), restructuring of Fe-S cluster in proteins, and detoxification of oxygen radicals. Rats with type 1 diabetes mellitus induced by streptozotocin (STZ) were anesthetized at 14th day, and liver, lung, kidney, and heart tissues were extracted. All samples were homogenized, and mitochondrial parts were separated. Same processes were performed also in the control group, and TST and MST activities were measured in each part. The homogenate MST (MST (Homo) .) activities of the type 1 diabetes mellitus group were compared with the control group, and a decrease was observed in the lung, liver, and kidney, respectively; at the same time, an increase was seen in the heart tissue. The mitochondrial MST (MST (Mito) .) activities of rats with type 1 diabetes mellitus group were compared with the control group, and a decrease was found in all tissues. The highest decrease in the TST (Mito) . level of rats with type 1 diabetes mellitus was observed in kidney tissue. The TST activities of the type 1 diabetes mellitus group were compared with the control group, and a decrease was observed in the liver, lung, and kidney, respectively; at the same time, an increase was seen in the heart tissue. It is demonstrated in the present study that decreases occur both in enzyme levels of tissue homogenates and in mitochondria, of rats with induced type 1 diabetes mellitus. However, these results were not statistically significant. In the presence of these findings, we think that kidney, liver, lung, and heart tissue can be affected by type 1 diabetes in the long term.Öğe Elevated Serum CD95/FAS and HIF-1 alpha Levels, but Not Tie-2 Levels, May Be Biomarkers in Patients With Severe Endometriosis: A Preliminary Report(ELSEVIER SCIENCE INC, 2016) Karakus, Savas; Sancakdar, Enver; Akkar, Ozlem; Yildiz, Caglar; Demirpence, Ozlem; Cetin, AliStudy Objective: To evaluate serum values of cluster of differentiation 95 (CD95/FAS), hypoxia-inducible factor 1-alpha (HIF-1 alpha), and tyrosine kinase receptor 2 (Tie-2) as possible biomarkers of disease presence and severity in women with endometriosis, and to characterize the changes in these values in women with stage I/II and stage III/IV endometriosis. Design: Prospective study (Canadian Task Force classification I). Setting: University hospital. Patients: Thirty women with endometriosis and 30 healthy women without endometriosis. Intervention: For the diagnosis of endometriosis and prediction of its severity, we measured the serum levels of CD95/FAS, which assess apoptotic conditions, and of HIF-1 alpha and Tie-2, which assess angiogenesis. Endometriosis was diagnosed and staged through surgical laparoscopy and later confirmed histologically. During the surgery, the patients with endometriosis were divided into 2 groups based on disease stage. Eleven patients had stage I/II endometriosis, and 19 had stage III/IV endometriosis. Measurements and Main Results: Endometriosis was associated with increased serum CD95/FAS and HIF-1 alpha levels, but not Tie-2 levels. We also determined that stage III/IV endometriosis was associated with higher serum CD95/FAS and HIF-1 alpha levels, but not Tie-2 levels, compared with stage I/II endometriosis. Conclusion: Endometriosis, in accordance with its severity, increases serum CD95/FAS and HIF-1 alpha levels, but not Tie-2 levels. These biomarkers may be useful for reproductive surgeons to improve the quality of counseling women about the presence and severity of endometriosis. (C) 2016 AAGL. All rights reserved.Öğe HIGH MOBILITY GROUP BOX-1 LEVELS IN SCHIZOPHRENIA: POTENTIAL BIOMARKER OF REMISSION PHASE(Soc Medical Biochemists Serbia, 2021) Yilmaz, Nuryil; Yelboga, Zekeriya; Yilmaz, Yavuz; Demirpence, OzlemBackground: Schizophrenia is a chronic mental disorder, characterized byacute exacerbation and remission phases.Immune system has a role in the pathophysiology of schizophrenia. High mobility group box-1 (HMGB-1) is a macrophage secreted protein activating immune cells to produce cytokines. The aim of this study was to evaluate HMGB-1 levels among patients with schizophrenia both in acute exacerbation and remission phases. Methods: Consecutive schizophrenia patients in acute exacerbation and remission phases were enrolled and compared with each other and with age-sex matched healthy subjects. Patients were assessed with the Scale for the Assessment of Positive Symptoms (SAPS), Scale for the Assessment of Negative Symptoms (SANS), Brief Psychiatric Rating Scale (BPRS), Clinical Global Impression Scale (CGI). Results: Mean HMGB-1 levels were not significantly different in acute exacerbation phase versus remission phase schizophrenia patients (2.139 +/- 0.564 mu g/L vs. 2.326 +/- 0.471 mu g/L, p=0.335) and both were individually higher than the control group (1.791 +/- 0.444 mu g/L, p=0.05 for acute exacerbation vs control, p=0.002 for remission vs control). In remission phase schizophrenic patients, HMGB-1 levels were positively correlated with Scale For The Assessment of Positive Symptoms (r=0.447, p=0.015) and BPRS (r=0.397, p=0.033) scores and HMGB-1 levels were independently associated with BPRS. Conclusions: Serum HMGB-1 levels were shown to be increased in patients with schizophrenia patients irrespec- tive of phase, there were no differences between patients in acute exacerbation and remission phase in terms of biomarker and HMGB-1 levels were related to symptom severity according to psychiatric scales among patients in remission phase of schizophrenia.Öğe High-sensitivity C-reactive protein and high mobility group box-1 levels in Parkinson's disease(SPRINGER-VERLAG ITALIA SRL, 2019) Baran, Aslihan; Bulut, Mahmut; Kaya, Mehmet Cemal; Demirpence, Ozlem; Sevim, Bunyamin; Akil, Esref; Varol, SeferVarious immunologic and inflammatory factors are contributed to pathogenesis of Parkinson's disease (PD). High mobility group box-1 (HMGB1) is a protein that plays certain roles in inflammation, DNA repair, transcription, somatic recombination, cell differentiation, cell migration, neuronal development, and neurodegeneration. The aim of the present study was to evaluate the serum levels of HMGB1 and high-sensitivity C-reactive protein (hs-CRP) among patients with Parkinson's disease and healthy controls. This study includes 30 patients with PD and 30 healthy controls, matched sex, age, body mass index, and smoking status. HMGB1 and hs-CRP serum levels were compared between the groups. The diagnostic performance of HMGB1 and hs-CRP was evaluated with receiver operating characteristic (ROC) curve analysis. HMGB1 levels were significantly higher in PD patients than in controls. Hs-CRP levels were significantly higher in PD patients than in controls There was a moderate correlation between hs-CRP and HMGB1 levels in the patient group. The cut-off value of HMGB1 level for the prediction of PD was determined as 32.8ng/mL with 80% sensitivity and 60% specificity (p=0.006). The cut-off value of hs-CRP level for the prediction of PD was determined as 0.63mg/L with 66.7% sensitivity and 77.7% specificity (p=0.007). This study demonstrates for the first time the association between HMGB1, hs-CRP, and PD. We found that HMGB1 and hs-CRP levels to be significantly higher in the PD patients than in the normal controls. As a result of the ROC curve analysis, HMGB1 and hs-CRP levels may be fair markers in the diagnosis of PD.Öğe Increased High Mobility Group Box1 (HMGB1) level in major depressive disorder(YERKURE TANITIM & YAYINCILIK HIZMETLERI A S, 2015) Demir, Suleyman; Bulut, Mahmut; Kaya, Mehmet Cemal; Sevim, Bunyamin; Demirpence, Ozlem; Ibiloglu, Aslihan Okan; Gunes, Mehmet; Atli, Abdullah; Bez, YasinObjective: It was reported that High Mobility Group Box 1 (HMGB1), also known as the nuclear transcription factor, is a late mediator of inflammation. It was thought that HMGB1 has a prominent role in the activation of Tumor Necrosis Factor-a (TNF-alpha), Interleukin (IL)-1 beta and IL-8 which are proinflammatory mediators during inflammation. HMGB1 plays a role in progress, diagnosis and prognosis of immune system illnesses. Besides suppressing the immune system, Major Depressive Disorder (MDD) was indicated to cause changes in inflammatory processes. Biological determinants affecting the diagnosis, therapy, and prognosis of depression are quite limited. Therefore, new etiological models are needed to explain the pathophysiology of depression. There is no study in the literature investigating level of HMGB1 in MDD of the humans. This study aims to examine the role of inflammation in the etiology of depression based on the HMGB1 in patients with MDD. Methods: A total of 30 patients diagnosed with MDD were included in the study. The control group consisted of 30 healthy subjects without any psychiatric disorders. A socio-demographic information form, Hamilton Depression Rating Scale (HDRS) and Clinical Global Impression Scale (CGIS) were administered, and blood was taken for measurement of HMGB1 levels. Results: Significantly higher HMGB1 values were identified with the patient group when compared to the control group (p<0.05). Conclusion: Our study is the first in which HMGB1 level was investigated in MDD ot the humans. The findings of the study reveal that HMGB1 tends to be higher in patients with MDD, and a high HMGB1 value supports the view that inflammation might have a critical role in the etiology of MDD.Öğe Neutrophil-lymphocyte ratio in patients with major depressive disorder undergoing no pharmacological therapy(DOVE MEDICAL PRESS LTD, 2015) Demir, Suleyman; Atli, Abdullah; Bulut, Mahmut; Ibiloglu, Aslihan Okan; Gunes, Mehmet; Kaya, Mehmet Cemal; Demirpence, Ozlem; Sir, AytekinStudies attempting to clarify the relationship between major depressive disorder (MDD) and the immune system have been increasing in recent years. It was reported that increased production of the main proinflammatory cytokines, such as interleukin-1, interleukin-6, and tumor necrosis factor-alpha, and that of acute phase reactants may play a role in the etiopathogenesis of depression. Stress and depression were reported to increase leukocyte and neutrophil counts and to decrease lymphocyte count. Biological determinants affecting the diagnosis, therapy, and prognosis of depression are quite limited. Therefore, new etiological models are needed to explain the pathophysiology of depression. In recent years, neutrophil-lymphocyte ratio (NLR) was determined to be a good indicator of inflammatory status. There is no study in the literature investigating NLR in MDD. This study aims to examine the role of inflammation in the etiology of depression based on the NLR in MDD patients who are undergoing no pharmacological therapy. A total of 41 patients diagnosed with MDD, who received no antidepressant therapy within the past 1 month, were included in the study, which took place between January and March 2015. The control group consisted of 47 healthy subjects with no psychiatric disorders. A sociodemographic information form and a Beck Depression Scale were administered, and the blood was taken for biochemical analysis. Significant differences were identified in the NLR, neutrophil count, lymphocyte percentage, and leukocyte values of the patient group when compared with the control group (P < 0.05). Our study is the first in which NLR was investigated in MDD. The findings of the study reveal that NLR tends to be higher in patients with MDD, and a high NLR value supports the view that inflammation is a critical factor in the etiology of MDD.Öğe Ovarian Reserve Assessment in Celiac Patients of Reproductive Age(INT SCIENTIFIC LITERATURE, INC, 2018) Cakmak, Erol; Karakus, Savas; Demirpence, Ozlem; Coskun, Banu DemetBackground: This study aimed to investigate ovarian reserve in patients of reproductive age with Celiac disease (CD) using anti-Mullerian hormone (AMH) levels, antral follicle counts (AFCs), and ovarian volume. Material/Methods: We included into this study 46 CD female patients and 40 healthy female subjects of reproductive age, ages 18-45 years. Venous blood samples were taken from both groups on days 2-4 of the menstrual cycle, and follicle stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E-2), prolactin (PRL), and AMH levels were measured. On the same day, AFCs and ovarian volumes were determined. Data on body mass index (BMI), gravidity/parity/abortions/alive counts, disease duration, and Marsh histological classification were recorded. Results: There were no statistically significant differences between CD and control groups in terms of mean age, BMI, or median gravidity/parity/abortions/alive counts (p>0.05). Also, there were no statistically significant differences between the 2 groups in terms of mean FSH, LH, E-2, PRL levels, right and left ovarian volumes, and median right and left ovarian AFCs (p>0.05). However, AMH level was significantly lower in the CD group (p=0.032). No statistically significant correlation was found between AMH levels and age, BMI, FSH, LH, E-2, PRL levels, right and left ovarian volumes, right and left ovarian AFCs, or Marsh histological classification using the Spearman correlation test (p>0.05). However, an inverse correlation was detected showing that AMH levels decrease with increasing CD duration (r=-0.054, p=0.001). Conclusions: We found that AMH level and ovarian reserve was decreased in CD patients of reproductive age compared to healthy controls, and that AMH level and ovarian reserve decreased with increasing disease duration in CD patients.Öğe Presepsin Levels of Patients with Crimean-Congo Hemorrhagic Fever(NATL INST INFECTIOUS DISEASES, 2016) Demirpence, Ozlem; Dogan, Halef Okan; Ersan, Serpil; Sahin, Mehtap; Sahin, Hasan; Bakir, MehmetLevels of presepsin (a soluble cluster of differentiation subtype 14 [CD14]) are thought to increase in cases of bacterial infection. CD14 has also been found to play a role in the pathogenesis of various viral diseases. Crimean-Congo hemorrhagic fever (CCHF) is a zoonotic arboviral infection. Our study focuses on presepsin levels as a biomarker for CCHF. Serum presepsin levels in a CCHF group (n = 59) and control group (n = 28) were compared. Patients with CCHF were classified according to severity grading score as having mild, moderate, or severe infection and were allocated to corresponding subgroups (groups 1, 2, and 3, respectively). Presepsin levels were measured in serum samples by using a commercial enzyme-linked immunosorbent assay kit. The mean presepsin levels in the CCHF group as a whole and the healthy group were found to be significantly different (1,499.46 +/- 411.96 pg/ml and 430.68 +/- 61.21 pg/ml, respectively). The mean presepsin levels of the CCHF subgroups (1, 2 and 3) and the healthy group were also found to be significantly different (1,204.53 +/- 371.18, 1,464.21 +/- 338.37, 2,007.36 +/- 82.18, and 430.68 +/- 61.21 pg/ml, respectively) (p < 0.05). We also found that as the severity of the disease increased, the presepsin level also increased. We postulate that the presepsin levels could be used as a supportive biomarker for diagnosis and follow-up of the disease.Öğe Soluble suppression of tumorigenicity-2 for risk stratification in outpatients with heart failure Reply(TURKISH SOC CARDIOLOGY, 2018) Gul, Ibrahim; Yucel, Oguzhan; Zararsiz, Abdullah; Demirpence, Ozlem; Yucel, Hasan; Zorlu, Ali; Yilmaz, Mehmet Birhan…
