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Dive into the research topics where Safak Sahin is active.

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Featured researches published by Safak Sahin.


Platelets | 2013

Does mean platelet volume influence the attack or attack-free period in the patients with Familial Mediterranean fever?

Safak Sahin; Soner Senel; Hilmi Ataseven; Ilker Yalcin

Familial Mediterranean fever (FMF) is an autosomal recessive hereditary disease which is characterized by recurrent attacks of fever and peritonitis, pleuritis, arthritis, or erysipelas-like skin disease. Mean platelet volume (MPV) is a sign of platelet activation. There are limited studies in the literature about MPV levels in FMF patients. We aimed to investigate MPV levels during the attack period (group 1) and attack-free periods (group 2) in FMF patients, and to compare them with healthy controls (group 3). The study consisted of the data of: 60 group 1 patients, 120 group 2 patients, and 75 group 3 patients. Erythrocyte sedimentation rate, C-reactive protein, white blood cell count, platelet count, and MPV levels were retrospectively recorded from patient files. Statistical analyses showed that MPV was significantly lower in FMF patients both in group 1 and group 2 than in group 3 (p = 0.004, p = 0.002, respectively); however, there was no difference among group 1 and group 2 in patients with FMF (p = 0.279). The mean platelet count of group 1 was higher than that of group 3 (p = 0.010). In conclusion, this study results suggested that MPV level did not increase on the contrary, it decreased in patients with FMF both in group 1 and/or group 2 when compared to group 3. It was concluded that the lower MPV level was an expected result of secondary thrombocytosis in FMF patients.


Kaohsiung Journal of Medical Sciences | 2015

The relationship between the neutrophil-lymphocyte ratio and disease activity in patients with ulcerative colitis.

Ayşe Kevser Demir; Ahmet Demirtas; Suheyla Uzun Kaya; İbrahim Taştan; İlknur Bütün; Mustafa Sağcan; Safak Sahin; Turker Tasliyurt; Abdulkerim Yilmaz

Preliminary evidence suggests that a higher neutrophil–lymphocyte ratio (NLR) may be an indicator of active ulcerative colitis (UC). However, it is not clear whether the NLR is a useful and simple indicator of clinical activity in UC after adjusting for the other inflammatory markers. We designed a retrospective study to evaluate the role of the NLR in estimating disease severity in UC patients. The study consisted of 71 patients with UC and 140 age‐ and sex‐matched healthy individuals (control group). The NLR, erythrocyte sedimentation rate, C‐reactive protein, and white blood cell count were measured. The NLR values of the active UC group were elevated compared with those of the patients with inactive UC and the controls (2.59 ± 1.47, 2.03 ± 1.07, and 1.98 ± 0.85, respectively; p = 0.005). The receiver operating characteristic revealed that the optimum NLR cut‐off point for active UC was 2.39. A multivariable logistic analysis showed that of the parameters studied, C‐reactive protein was the only parameter able to significantly discriminate active from inactive UC (B: 0.222; p = 0.017; odds ratio: 1.248; 95% confidence interval: 1.041–1.497).


Quintessence International | 2014

Prevalence of periodontal disease in patients with Familial Mediterranean Fever: A cohort study from central Turkey

Vildan Bostanci; Hulya Toker; Soner Senel; Safak Sahin

OBJECTIVE The aim of this study was to compare the periodontal status in patients with Familial Mediterranean Fever (FMF) and in those without this disease. METHOD AND MATERIALS 84 subjects clinically diagnosed with FMF and 75 systemically healthy controls, matched by age and gender, were recruited. All FMF patients were on a regular daily colchicine treatment and during attack-free periods. Gingival Index (GI), Plaque Index (PI), probing pocket depth (PD), and clinical attachment level (CAL) were measured in all subjects. To evaluate periodontal disease further, patients were stratified into fi ve groups. Education information and smoking habits were recorded. RESULTS The FMF patients and healthy controls were comparable for age, gender, and smoking status (P>.05). The FMF patients had significantly higher PI and GI values and lower PD and CAL values than those of the control group (P<.05). However, there was no significant difference among all groups in terms of periodontal disease severity (P>.05). In the FMF-severe periodontitis group, higher PI and GI values were seen (P<.05). However, there was no significant difference between the FMF-severe periodontitis group and the controls with severe periodontitis regarding the PD and CAL values (P>.05). CONCLUSION Patients with FMF using colchicine did not manifest higher attachment loss compared to age- and sex-matched systemically healthy controls.


Platelets | 2014

Is there a link between mean platelet volume and thrombotic events in antiphospholipid syndrome

Serdal Korkmaz; Ali Ugur Uslu; Safak Sahin; Soner Senel; Mehmet Sencan

Abstract The antiphospholipid syndrome (APS) is an autoimmune disease characterized by the production of antiphospholipid antibodies (aPL) that promote vascular thrombosis and pregnancy loss. APS can occur in the absence of underlying or associated disease (primary APS) or in combination with other diseases (secondary APS). Mean platelet volume (MPV) is largely regarded as a useful surrogate marker of platelet activation. We aimed to investigate if there is a relationship between MPV and thrombotic events in APS. The study consisted of 22 patients and 22 healthy controls. Group 1 is defined as all the patients in the first day of thrombotic event. Group 2 is defined as the same patient population three months after the thrombotic event. The erythrocyte sedimentation rate, C-reactive protein, white blood cell count, platelet count, and MPV levels were retrospectively recorded from patient files. Statistical analyses showed that MPV was significantly higher in group 1 than group 2 (p < 0.0001) and healthy controls (p < 0.05). However, there was no difference between group 2 and healthy controls (p = 0.888). WBC, hemoglobin and other platelet indices such as platelet distribution width and platecrit did not differ in groups. In conclusion, MPV was increased at initial thrombotic event of APS, and then it was normalized three months later by therapeutic interventions. To our knowledge, this is the first study demonstrating a correlation between MPV and thrombotic events in APS.


Toxicology and Industrial Health | 2015

Cardiac autonomic function in healthy young smokers.

Alim Erdem; Suzi Selim Ayhan; Serkan Öztürk; Mehmet Fatih Özlü; Aytekin Alcelik; Safak Sahin; Mehmet Tosun; Fatma Erdem; Kenan Gumustekin; Mehmet Yazici

The present study examined the heart rate turbulence (HRT) and heart rate variability (HRV) parameters in healthy young smokers (<40 years) to assess the effects of smoking on cardiac autonomic function. The study included 75 smokers with a history of habitual smoking for at least 1 year (41 males and 34 females; mean age, 29.3 ± 7.3 years) and 30 nonsmokers (hospital staff; 16 males and 14 females; mean age, 29.0 ± 6.1 years). Addiction to smoking was evaluated using the modified Fagerström test for nicotine-dependence index (NDI). HRT, HRV, basic clinical and echocardiographic, and Holter test parameters were compared between groups. No significant differences between the two groups were found in the basic clinical and echocardiographic variables. Turbulence onset (TO) was significantly higher in the smoking group than in the controls, and turbulence slope was significantly lower in the smokers, than in the controls (p < 0.05). Standard deviation of all normal-to-normal (NN) interval index (SDNNI) was the only HRV parameter that was significantly different between the smoking and control groups (p < 0.05). The NDI was positively correlated with the TO (p < 0.05). Smoking impairs the baroregulatory function in healthy young smokers, particularly the HRT parameters and SDNNI. Our findings highlight the importance of complete smoking cessation.


Revista De Psiquiatria Clinica | 2016

Simple markers for subclinical inflammation in the different phases of bipolar affective disorder

Mesut Yıldız; Sedat Batmaz; Emrah Songur; Safak Sahin; Osman Demir

Recently, a growing number of publications have suggested that the immune-inflammatory system may be involved in the etiology of bipolar disorder (BD). Objective: The aim of this study was to investigate neutrophil-lymphocyte ratio (NLR), platelet-lymphocyte ratio (PLR), and red cell distribution width (RDW) in the three different phases of BD patients compared to each other and controls. Methods: One hundred eighty-seven bipolar patients (78 euthymic, 53 manic/hypomanic and 56 depressed), and 62 age and sex matched controls were enrolled. Sociodemographic variables and complete blood count parameters of the patients and the control group were recorded. Results: The groups did not differ from each other on the hematological parameters, except for NLR and RDW. Post-hoc analyses revealed that NLR values were significantly higher in the euthymic and manic/hypomanic bipolar groups compared to control group. In addition, post-hoc analyses revealed that RDW values were significantly higher in the manic/hypomanic bipolar group relative to the control group. Discussion: Longitudinal studies evaluating the levels of inflammatory markers in the early phases of the disorder, and their relationship with the development of different episodes and medical comorbidities may be useful to understand the role of inflammation in BD


Nigerian Journal of Clinical Practice | 2014

Evaluation of oxidative stress using exhaled breath 8-isoprostane levels on chronic kidney disease.

Bs Tiryaki; Turker Tasliyurt; Berna Murat Yelken; Safak Sahin; Faruk Kutluturk; Handan Inonu Koseoglu; Banu Ozturk; Ayşe Yılmaz

BACKGROUND There have been limited numbers of studies on patients with chronic kidney disease (CKD) to determine oxidative stress in exhaled breath condensate (EBC). Those two studies have been carried out on hemodialysis patients, and hydrogen peroxide and nitric oxide have been studied in order to show oxidative stress on EBC. AIMS We investigated oxidative stress in EBC evaluating 8-isoprostane levels on different stages of CKD. MATERIALS AND METHODS A total of 81 patients with 2-4 CKD stages have been evaluated prospectively. The patients have been categorized into three groups according to their CKD stages. For biochemical analysis, blood and breathing air samples were taken. 8-isoprostane has been measured using immunoassay method as the indicator of oxidative stress in EBC. RESULTS 8-isoprostane values were 8.19 ± 4.56, 13.89 ± 8.70, and 14.20 ± 10.68 pg/min group 1, 2, and 3, respectively; and the EBC 8-isoprostane levels increased significantly as CKD stages advanced (P0 = 0.018). There was a statistically significant reverse correlation between 8-isoprostane and glomerular filtration rate (GFR; r = -0.275; P = 0.014), but not between 8-isoprostane and C-reactive protein (r = -0.183; P = 0.177). CONCLUSIONS We determined the level of 8-isoprostane in EBC of patients with different stages of CKD and showed that the level of 8-isoprostane significantly increased through the progress of CKD. We consider that our study is important because there have been limited number of studies that evaluate oxidative stress in CKD using EBC which is a noninvasive method.


Case reports in rheumatology | 2014

A Rare Cause of Pericardial Effusion: Giant Cell Arteritis

Turker Tasliyurt; Hakan Sivgin; Lutfu Bekar; Safak Sahin; Suheyla Uzun Kaya; Resit Dogan Koseoglu; Faruk Kutluturk; Abdulkerim Yilmaz

Giant cell arteritis is a granulomatous vasculitis characterized by medium or large sized vessel involvement. Although extracranial branches of the carotid artery are typically involved, involvement of aorta and its major branches can also be seen. Cardiac involvement has been encountered less frequently and pericardial effusion is rarely encountered. In this paper, a case has been presented in which pericardial effusion was determined during the examination and diagnosis was giant cell arteritis.


Korean Circulation Journal | 2017

Aortic Flow Propagation Velocity in Patients with Familial Mediterranean Fever: an Observational Study

Kayıhan Karaman; Arif Arısoy; Ayşegül Altunkaş; Ertuğrul Erken; Ahmet Demirtas; Mustafa Ozturk; Metin Karayakalı; Safak Sahin; Atac Celik

Background and Objectives Systemic inflammation has an important role in the initiation of atherosclerosis, which is associated with arterial stiffness (AS). Aortic flow propagation velocity (APV) is a new echocardiographic parameter of aortic stiffness. The relationship between systemic inflammation and AS has not yet been described in patients with familial Mediterranean fever (FMF). We aimed to investigate the early markers of AS in patients with FMF by measuring APV and carotid intima-media thickness (CIMT). Subjects and Methods Sixty-one FMF patients (43 women; mean age 27.3±6.7 years) in an attack-free period and 57 healthy individuals (36 women; mean age 28.8±7.1 years) were included in this study. The individuals with atherosclerotic risk factors were excluded from the study. The flow propagation velocity of the descending aorta and CIMT were measured to assess AS. Results APV was significantly lower (60.2±16.5 vs. 89.5±11.6 cm/sec, p<0.001) and CIMT was significantly higher (0.49±0.09 vs. 0.40±0.10 mm, p<0.001) in the FMF group compared to the control group. There were significant correlations between APV and mean CIMT (r=-0.424, p<0.001), erythrocyte sedimentation rate (ESR) (r=-0.198, p=0.032), and left ventricle ejection fraction (r=0.201, p=0.029). APV and the ESR were independent predictors of FMF in logistic regression analysis (OR=-0.900, 95% CI=0.865-0.936, p<0.001 and OR=-1.078, 95% CI=1.024-1.135, p=0.004, respectively). Mean CIMT and LVEF were independent factors associated with APV in linear regression analysis (β=-0.423, p<0.001 and β=0.199, p=0.017, respectively). Conclusion We demonstrated that APV was lower in FMF patients and is related to CIMT. According to our results, APV may be an independent predictor of FMF.


Journal of Magnetic Resonance Imaging | 2016

Evaluation of cisterna chyli diameter with MRI in patients with chronic kidney disease

Eda Albayrak; Zafer Özmen; Safak Sahin; Osman Demir; Ertuğrul Erken

To evaluate cisterna chyli (CC) diameter with magnetic resonance imaging (MRI) in patients with chronic kidney disease (CKD).

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Faruk Kutluturk

Gaziosmanpaşa University

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Ahmet Demirtas

Gaziosmanpaşa University

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Ertuğrul Erken

Gaziosmanpaşa University

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Fatih Altunkaş

Gaziosmanpaşa University

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Zafer Özmen

Gaziosmanpaşa University

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