Mehmet Turkeli
Atatürk University
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Publication
Featured researches published by Mehmet Turkeli.
International Journal of Cardiology | 2014
Yunusemre Özkanlar; Mustafa Sinan Aktas; Mehmet Turkeli; Nergis Ertürk; Ertan Oruç; Seckin Ozkanlar; Akin Kirbas; Burak Erdemci; Enbiya Aksakal
in doxorubicin-induced cardiotoxicity Yunusemre Ozkanlar ⁎, Mustafa Sinan Aktas , Mehmet Turkeli , Nergis Erturk , Ertan Oruc , Seckin Ozkanlar , Akin Kirbas , Burak Erdemci , Enbiya Aksakal f a Department of Internal Medicine, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey b Department of Medical Oncology, Faculty of Medicine, Ataturk University, Erzurum, Turkey c Department of Pathology, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey d Department of Biochemistry, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey e Department of Radiation Oncology, Faculty of Medicine, Ataturk University, Erzurum, Turkey f Department of Cardiology, Faculty of Medicine, Ataturk University, Erzurum, Turkey
Asian Pacific Journal of Cancer Prevention | 2015
Mehmet Naci Aldemir; Mehmet Turkeli; Melih Simsek; Nilgun Yildirim; Yusuf Bilen; Harun Yetimoglu; Mehmet Bilici; Salim Basol Tekin
BACKGROUND We aimed to investigate the prognostic value of baseline neutrophil, lymphocyte, and platelet counts along with the neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) in local and advanced gastric cancer patients. MATERIALS AND METHODS In this retrospective cross-sectional study, a total of 103 patients with gastric cancer were included. For all, patient characteristics and overall survival (OS) times were evaluated. Data from a complete blood count test including neutrophil, lymphocyte, monocyte, white blood cell (WBC) and platelet (Plt) count, hemoglobin level (Hb) were recorded, and the NLR and PLR were obtained for every patient prior to pathological diagnosis before any treatment was applied. RESULTS Of the patients, 53 had local disease, underwent surgery and were administered adjuvant chemoradiotherapy where indicated. The remaining 50 had advanced disease and only received chemotherapy. OS time was 71.6±6 months in local gastric cancer patients group and 15±2 months in the advanced gastric cancer group. Univariate analysis demonstrated that only high platelet count (p=0.013) was associated with better OS in the local gastric cancer patients. In contrast, both low NLR (p=0.029) and low PLR (p=0.012) were associated with better OS in advanced gastric cancer patients. CONCLUSIONS This study demonstrated that NLR and PLR had no effect on prognosis in patients with local gastric cancer who underwent surgery and received adjuvant chemoradiotherapy. In advanced gastric cancer patients, both NLR and PLR had significant effects on prognosis, so they may find application as easily measured prognostic factors for such patients.
American Journal of Emergency Medicine | 2014
Murat Saritemur; Mehmet Turkeli; Kamuran Kalkan; Ibrahim Halil Tanboga; Enbiya Aksakal
OBJECTIVES To investigate the predictive role of serum uric acid (SUA) levels measured in the emergency department (ED) to monitor contrast-induced nephropathy (CIN) and correlation with severity of nephropathy in patients undergoing primary percutaneous coronary intervention (PCI). METHOD The patients who were admitted to our ED and underwent primary PCI were enrolled retrospectively. Their baseline characteristics including SUA and creatinine levels in the ED and their creatinine levels 48 hours after PCI were noted. Nephropathy was graded as follows: grade 0, ΔCr ≤25% and ≤0.5 mg/dL; grade 1, ΔCr >25% but ≤0.5 mg/dL; and grade 2, ΔCr >0.5 mg/dL. A multiple logistic regression analysis was used to define the independent predictors of CIN. RESULTS Of a total of 744 patients, CIN was observed in 12.5% (n = 93). Serum uric acid levels were significantly higher in the CIN (+) group compared with the CIN (-) group (6.09 ± 2.01 mg/dL vs 4.89 ± 1.32 mg/dL, respectively; P < .001). Patients with grade 0 CIN had significantly lower SUA levels than did those with grades 1 and 2 (4.89 ± 1.32 mg/dL vs 5.88 ± 1.99 and 6.41 ± 2.02 mg/dL, respectively; P < .001), but there was no significant difference between grade 1 and grade 2 CIN cases in terms of SUA levels (5.88 ± 1.99 mg/dL vs 6.41 ± 2.02 mg/dL, P = .10). The cutoff value for SUA was 5.05 mg/dL for the prediction of CIN (area under the curve, 0.685; P < .001; sensitivity, 66%; specificity, 60%) in the population. CONCLUSIONS The SUA level is a simple independent early predictor of CIN in patients who underwent primary PCI, and early detection may help prevent the progression of CIN.
Renal Failure | 2014
Yusuf Bilen; Erdem Çankaya; Mustafa Keles; Erim Gulcan; Abdullah Uyanik; Mehmet Turkeli; Bulent Albayrak; Rahsan Yildirim
Abstract Objectives: Increased platelet activation contributes to cardiovascular mortality in chronic kidney disease patients (CKD). Larger platelets are more active and this increased activity had been suggested as a predictive biomarker for cardiovascular disease. In this study, we aimed to evaluate mean platelet volume (MPV) as an inflammatory marker in a broadened group of CKD patients. Our study is unique in literature as it covers all types of CKD including renal replacement therapies. Materials and methods: 200 patients (50 renal transplanted, 50 hemodialysis, 50 peritoneal dialysis, 50 chronic renal failure stages 3–4) were investigated who were between 18 and 76 years of age. The collected data included demographic properties, platelet count, MPV, C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), and hemoglobin. All of the patients had at least 12 month of therapy of either renal replacement modality. Results: The mean CRP value was detected statistically significantly higher in hemodialysis (HD) patients compared to the resting three groups of patients (p < 0.01). Mean CRP level was detected significantly higher in the pre-dialysis group compared to transplanted and peritoneal dialysis (PD) patients (p < 0.01). There is no statistically significant difference detected among the mean MPV values of all patient groups (p > 0.05). Conclusions: ESR and CRP were significantly increased in hemodialysis patients compared to the other groups. We did not detect a significant difference among MPV between the groups. ESR was detected lowest in transplanted patients. Transplantation is coming forward as the favorable choice of renal replacement therapy which decreases inflammation.
Asian Pacific Journal of Cancer Prevention | 2015
Mehmet Turkeli; Mehmet Naci Aldemir; Kerim Çayır; Melih Simsek; Mehmet Bilici; Salim Basol Tekin; Nilgun Yildirim; Nurhan Bilen; Ibrahim Makas
BACKGROUND Docetaxel, cisplatin, 5-fluorouracil (DCF) given every three weeks is an effective, but palliative regimen and significantly toxic especially in patients who have a low performance score. Here, we aimed to evaluate the efficacy and tolerability of a weekly formulation of DCF in locally advanced and metastatic gastric cancer patients. MATERIALS AND METHODS 64 gastric cancer patients (13 locally advanced and 51 metastatic) whose ECOG (Eastern Cooperative Oncology Group) performance status (PS) was 1-2 and who were treated with at least two cycles of weekly DCF protocol as first-line treatment were included retrospectively. The weekly DCF protocol included 25mg/m2 docetaxel, 25mg/m2 cisplatin, and 24 hours infusion of 750mg/m2 5-fluorouracil, repeated every week. Disease and patient characteristics, prognostic factors, treatment response, grade 3-4 toxicity related to treatment, progression free survival (PFS) and overall survival (OS) were evaluated. RESULTS Of the patients, 41 were male and 23 were female; the median age was 63 (29-82) years. Forty-one patients were ECOG-1 and 23 were ECOG-2. Of the total, 81.2% received at least three cycles of chemotherapy. Partial response was observed in 28.1% and stabilization in 29.7%. Overall, the disease was controlled in 57.8% whereas progression was noted in 42.2%. The median time to progression was 4 months (95%CI, 2.8-5.2 months) and median overall survival was 12 months (95%CI, 9.2-14.8 months). The evaluation of patients for grade 3-4 toxicity revealed that 10.9% had anemia, 7.8% had thrombocytopenia and 10.9% had neutropenia. Non-hematologic toxicity included renal toxicity (7.8%) and thrombosis (1.6%). CONCLUSIONS In patients with locally advanced or metastatic gastric cancer who were not candidates for DCF administered every-3-weeks, a weekly formulation of DCF demonstrated modest activity with minimal hematologic toxicity, suggesting that weekly DCF is a reasonable treatment option for such patients.
The Eurasian Journal of Medicine | 2016
Mehmet Turkeli; Melih Simsek; Mehmet Naci Aldemir; Nilgun Yildirim; Erdem Cankaya; Burak Erdemci; Mehmet Bilici; Salim Basol Tekin; Sukru Arslan; Ercan Korkut
OBJECTIVE Our aim is to evaluate the frequency and characteristics of cancer in the population of patients with solid organ transplant who are under immunosuppressive medication. In this study we aimed to emphasize the importance of early diagnosis of cancer in solid organ transplant recipients. An aging population began to receive solid organ transplantation and survival times prolonged. But this had a cost and new problems came forward. Especially de novo cancers because of immunosuppressive therapy took notice. Risk of malignancy increases after organ transplantation and cancer incidence was about 2.3-3.1% in these patients including skin cancer, lung cancer, malign lymphoma, cervix cancer, kaposi sarcoma, and hepatobiliary cancer. MATERIALS AND METHODS The files of 328 organ transplant recipients followed from January 2004 to April 2015 at Atatürk University Medical Faculty were retrospectively reviewed. RESULTS Eight patients developed cancer (2.4%). There were six males and two females. Age at cancer diagnosis ranged from 42 to 79 years old with average of 55 years. The interval from solid organ transplantation to cancer diagnosis ranged from 6 months to 30 years. Among the patients, five were renal transplant recipients and two were liver transplant recipients. Four patients had stage IV disease, one patient stage IIIB, and three patients had stage I disease. For none of the patients a diagnosis with screening methods was used for cancer before any complaints of tumor emerged. CONCLUSION To diagnose cancer at early stages in solid organ transplant recipients, earlier and detailed cancer screening is very important. The association between diagnosis of cancer at early stages and prolonged overall survival time is well known. Detailed and careful evaluation for occult malignancies in pre-transplantation period is also important.
Revista Espanola De Medicina Nuclear | 2016
A.K. Ayan; Burak Erdemci; E. Orsal; Zafer Bayraktutan; Erol Akpinar; Atilla Topcu; Mehmet Turkeli; B. Seven
OBJECTIVE In this study, an evaluation was made of the relationship between the serum levels of carcinoembryonic antigen (CEA), osteopontin (OPN), and the semi-quantitative parameters of 18-fluoro-2-deoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) in lung cancer patients with bone metastasis. MATERIAL AND METHODS The evaluation included 42 non-small cell lung cancer (NSCLC) and 31 small cell lung cancer (SCLC) patients who were referred to our institution for staging by (18)F-FDG PET/CT. The biochemical parameters measured included CEA and OPN serum levels. RESULTS Serum levels of OPN in NSCLC patients with and without bone metastasis were 21.20±4.97 ng/ml and 13.33±4.53 ng/ml, respectively (p<0.05). In SCLC patients with and without bone metastasis serum OPN levels were 23.95±4.78 ng/ml and 17.30±3.09 ng/ml, respectively (p<0.05). Serum levels of CEA in NSCLC patients with and without bone metastasis were 33.79±6.49 ng/ml and 11.74±2.96 ng/ml, respectively (p<0.05). In SCLC patients with and without bone metastasis serum levels of CEA were 28.93±4.59 ng/ml and 13.88±4.47 ng/ml, respectively (p<0.05). There were no correlations between primary tumor SUVmax, and serum levels of CEA and OPN. CONCLUSIONS Bone metastasis can be detected in patients with lung cancer by measuring CEA and OPN levels. Increased levels of CEA and OPN levels may be considered an early warning sign in patients needing accurate imaging, as they are at higher risk of bone metastasis.
Central European Journal of Medicine | 2009
Salim Basol Tekin; Kerim Çayır; Mehmet Bilici; Sare Şipal; Mustafa Atasoy; Mehmet Turkeli
Sarcoidosis is a systemic granulomatous disease of unknown cause that commonly involves the lungs, lymph nodes, bones, liver, spleen, or skin. Cutaneous findings of sarcoidosis occur in 20% to 35% of patients with systemic disease. The recognition of cutaneous lesions is important, because it gives important clues to diagnosis and also allows for easy biopsy. We report a 71-year-old Turkish woman with erythematous lesions, which included widespread, erythematous macules of various sizes on the chest, abdomen, and back on both sides of her body. Fine white scales covered some of the lesions. Hepatomegaly and bilateral hilar lymphadenopathy were also observed. Biopsy specimens of the skin showed dermal, noncaseating, epitheloid granulomas. The diagnosis, based on correlation of the clinical presentation and histopathological findings, was ichthyosiform sarcoidosis with systemic involvement. The difference between our case and other cases of ichthyosiform sarcoidosis described in the literature is that ours involved only the trunk and not the extremities. We are presenting this case because it is an interesting and rare variant of ichthyosiform sarcoidosis.
Biological Trace Element Research | 2008
Seyithan Taysi; Oztekin Cikman; Abdullah Kaya; Berna Demircan; Kenan Gumustekin; Adnan Yilmaz; Abdullah Böyük; Mustafa Keles; Mehmet Akyuz; Mehmet Turkeli
Tumor Biology | 2015
Hatice Odabas; Arife Ulas; Kübra Aydın; Mevlude Inanc; Asude Aksoy; Dogan Yazilitas; Mehmet Turkeli; Sinemis Yuksel; Ali Inal; Ahmet Siyar Ekinci; Alper Sevinc; Nebi Serkan Demirci; Mukremin Uysal; Necati Alkis; Faysal Dane; Mehmet Aliustaoglu; Mahmut Gumus