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Dive into the research topics where Mehmet Celikbilek is active.

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Featured researches published by Mehmet Celikbilek.


Journal of Clinical Laboratory Analysis | 2013

Neutrophil–Lymphocyte Ratio as a Predictor of Disease Severity in Ulcerative Colitis

Mehmet Celikbilek; Serkan Dogan; Omer Ozbakir; Gokmen Zararsiz; Hamit Kücük; Sebnem Gursoy; Alper Yurci; Kadri Güven; Mehmet Yücesoy

Blood neutrophil‐to‐lymphocyte (N/L) ratio is an indicator of the overall inflammatory status of the body, and an alteration in N/L ratio may be found in ulcerative colitis (UC) patients. The aims of this study were to investigate the utility of N/L ratio as a simple and readily available predictor for clinical disease activity in UC. J. Clin. Lab. Anal. 27:72–76, 2013.


World Journal of Hepatology | 2014

Circulating microRNAs in patients with non-alcoholic fatty liver disease

Mehmet Celikbilek; Mevlut Baskol; Serpil Taheri; Kemal Deniz; Serkan Dogan; Gokmen Zararsiz; Sebnem Gursoy; Kadri Güven; Omer Ozbakir; Munis Dundar; Mehmet Yucesoy

AIM To identify novel non-invasive biomarkers for non-alcoholic fatty liver disease (NAFLD). METHODS Twenty patients with histologically proven NAFLD and 20 controls were included. All NAFLD cases were scored using the NAFLD activity score. The relative expressions of miR-197, miR-146b, miR-10b, miR-181d, miR-34a, miR-122, miR-99a and miR-29a were analyzed using real-time polymerase chain reaction. RESULTS Serum levels of miR-181d, miR-99a, miR-197 and miR-146b were significantly lower in biopsy-proven NAFLD patients than in the healthy controls. Serum levels of miR-197 and miR-10b were inversely correlated with degree of inflammation and miR-181d and miR-99a were inversely correlated with serum gamma glutamyl transferase levels in non-alcoholic steatohepatitis patients. CONCLUSION NAFLD is associated with altered serum miRNA expression pattern. This study provides clues for defining the non-invasive diagnosis of NAFLD.


Journal of Alternative and Complementary Medicine | 2012

Endoscopic Topical Application of Ankaferd Blood Stopper® in Gastrointestinal Bleeding

Ahmet Karaman; Mevlut Baskol; Sebnem Gursoy; Edip Torun; Alper Yurci; Mehmet Celikbilek; Kadri Güven; Omer Ozbakir; Mehmet Yucesoy

AIM This was a prospective study investigating the efficacy of Ankaferd Blood Stopper(®) (ABS), an herbal preparation, in patients with upper gastrointestinal (UGI) bleeding. MATERIALS AND METHODS A total of 30 patients (22 male, 8 female) who had UGI bleeding (with differing causes) were included in the study. ABS was used to stop the bleeding. RESULTS Primary hemostasis was achieved in 26 of the 30 cases. CONCLUSIONS ABS is an effective and safe agent to use in patients with UGI bleeding.


Platelets | 2013

Mean platelet volume in biopsy-proven non-alcoholic fatty liver disease.

Mehmet Celikbilek; Sebnem Gursoy; Kemal Deniz; Ahmet Karaman; Gokmen Zararsiz; Alper Yurci

Non-alcoholic fatty liver disease (NAFLD) is increasingly recognized as the most common cause of chronic liver disease worldwide. It has been shown that NAFLD has a strong association with metabolic syndrome and its component like insulin resistance (IR). Cardiovascular disease has a relation with NAFLD. Platelet volume is an indicator of platelet function and activation. Mean platelet volume (MPV) has been reported as a risk factor for atherothrombosis. In our study, we aimed to investigate the relation of MPV with NAFLD and IR in the NAFLD patients. A total of 54 patients with histologically proven NAFLD and 41 healthy age-matched control subject were enrolled in this study. The NAFLD subjects were divided into two subgroups: 42 patients in the insulin resistant group (median age 39.5, females 22 [52%]) and 12 patients in the insulin sensitive group (median age 38, females 5 [41.7%]). MPV were significantly higher in the NAFLD group in univariate analysis (p < 0.05). In the NAFLD patients, we did not find any relation between steatosis grade, lobular inflammation, hepatocellular ballooning, NAFLD activity score and fibrosis with MPV value. Among the insulin resistant and sensitive groups in the NAFLD patients MPV values were similar. The results of this study showed that MPV, an indicator of platelet activation, increased in biopsy proven NAFLD patients but MPV is not correlated with the increase of IR in NAFLD patients. MPV is not related with inflammation and steatosis degree, hepatocellular ballooning and fibrosis in NAFLD patients.


Hepatobiliary & Pancreatic Diseases International | 2011

Primary hepatic carcinosarcoma

Mehmet Celikbilek; Kemal Deniz; Edip Torun; Tarik Artis; Ersin Ozaslan; ökkeç İbrahim Karahan; Tahir Patiroglu; Omer Ozbakir

BACKGROUND Primary hepatic carcinosarcoma is a rare malignant tumor containing an intimate mixture of carcinomatous and sarcomatous elements. Reports on risk factors, epidemiology, and pathogenesis of the tumor as well as the experience in its treatment are limited. METHOD We present a case of primary carcinosarcoma of the liver in a 69-year-old man who complained of right hypochondrial pain and weight loss for two months. RESULTS Magnetic resonance imaging revealed a 14 x 12 cm mass in segments 7-8 and 4 of the liver with vena hepatica invasion. An ultrasonography-guided biopsy showed osteoid tissue without osteoblastic rimming. Vascular structures accompanied the osteoid tissue. The patient underwent surgery after a diagnosis of hemangioma. Intraoperative frozen sections revealed a carcinosarcoma associated with an osteosarcoma and cholangiocellular carcinoma components. CONCLUSIONS Preoperative diagnosis of this rare primary hepatic malignant tumor may be difficult by biopsy owing to intratumoral heterogeneity. Highly mature areas of the osteosarcomatous component may lead to misdiagnosis of metaplastic bone tissue. Clinicopathologic features of this rare entity are discussed.


Journal of Clinical Laboratory Analysis | 2015

Neutrophil–Lymphocyte Ratio in Patients With Familial Mediterranean Fever

Mehmet Celikbilek; Serkan Dogan; Lütfi Akyol; Elif Borekci; Gokmen Zararsiz; Mustafa Kozan; Ilhan Günaydin

Blood neutrophil‐to‐lymphocyte (N/L) ratio is an indicator of the overall inflammatory status of the body, and an alteration in N/L ratio may be found in patients with familial Mediterranean fever (FMF). The aim of this study was to investigate the interrelationship between N/L ratio and FMF.


European Journal of Gastroenterology & Hepatology | 2015

Association between liver fibrosis and coronary heart disease risk in patients with nonalcoholic fatty liver disease

Serkan Dogan; Mehmet Celikbilek; Yunus Keser Yılmaz; Savaş Sarıkaya; Gokmen Zararsiz; Halil İbrahim Serin; Elif Borekci; Lütfi Akyol; Ilyas Pirti; Sena E. Davarci

Background Nonalcoholic fatty liver disease (NAFLD) is being increasingly recognized as the most common cause of chronic liver disease worldwide. It has been shown that NAFLD in adults is associated with increased risk of coronary heart disease (CHD). Because of the limitations of liver biopsy, noninvasive scoring indexes such as the NAFLD fibrosis score (NFS) were developed. The Framingham risk score (FRS) provides an estimate of CHD risk. In our study we aimed to investigate whether the severity of liver fibrosis estimated with the NFS is associated with a higher risk of CHD among individuals with ultrasonography-diagnosed NAFLD. Study A total of 155 patients and controls (81 patients with NAFLD and 74 controls) with ages ranging from 18 to 70 years were enrolled in this cross-sectional prospective study. Demographic, anthropometric, clinical, and laboratory data were obtained from each individual. The NAFLD patients were divided into subgroups on the basis of the severity of fatty liver. The FRS and NFS were adopted to predict the risk of CHD and the severity of hepatic fibrosis. Results In our study, we found that the FRS was higher in NAFLD patients than in controls (P<0.05). According to the FRS category, NFSs were higher in the intermediate/high probability CHD risk group in NAFLD (P<0.05). In multiple models, only age, sex, cholesterol, and HDL were independently associated with intermediate/high CHD risk (P<0.05). We also found a positive correlation between the NFS and the FRS (r=0.373, P<0.001). The optimum NFS cutoff point for identifying intermediate/high CHD risk in NAFLD patients was −2.1284, with a sensitivity and specificity of 95.20 and 48.30%, respectively. The predictive performance of the NFS in the determination of intermediate/high CHD risk in NAFLD patients was found to be 72% based on the area under the curve value. Conclusion The FRS is associated with the NFS in NAFLD. The assessment of liver fibrosis may be useful for the risk stratification of CHD in the absence of liver biopsy in clinical practice.


Neuroscience Letters | 2014

S100B as a glial cell marker in diabetic peripheral neuropathy

Asuman Celikbilek; Lütfi Akyol; Seda Sabah; Nermin Tanik; Mehmet Adam; Mehmet Celikbilek; Murat Korkmaz; Neziha Yilmaz

Evidence suggests that acute and chronic hyperglycemia can cause oxidative stress in the peripheral nervous system which, in turn, can promote the development of diabetic neuropathy. Recent studies have found increased expression of glial fibrillary acidic protein (GFAP) and S100B, both of which are indicators of glial reactivity, in the neural and retinal tissues of diabetic rats. For the first time in the literature, the serum levels of GFAP and S100B were assessed in patients with diabetes to evaluate the potential of these factors to serve as peripheral glial biomarkers of diabetes and to investigate their relationship to diabetic peripheral neuropathy. This prospective clinical study included 72 patients with type 2 diabetes mellitus and 50 age- and sex-matched control subjects. All diabetic patients were assessed with respect to diabetes-related microvascular complications, such as peripheral neuropathy, retinopathy, and nephropathy. Serum samples were analyzed for human GFAP and S100B using a commercially available Enzyme-linked Immuno Sorbent Assay kit. GFAP was not detected in the serum samples of either diabetic or control patients (p>0.05). However, we found a statistically significant decrease in S100B serum levels in patients with diabetes compared with control participants (p<0.001). No associations between serum S100B levels and the presence of diabetic peripheral neuropathy or other microvascular complications were observed (p>0.05). The findings of markedly decreased serum levels of S100B may possibly indicate a neuroprotective effect of S100B, whereas GFAP may be of no diagnostic value in human patients with diabetes.


Gastroenterology | 2012

High fructose consumption can induce endotoxemia.

Serkan Dogan; Mehmet Celikbilek; Kadri Güven

Dear Sir: We read the article speculating that a high-fat diet is associated with endotoxemia originating from the gut which is recently published in GASTROENTEROLOGY by Pendyala et al.1 They also proposed that the Western-style diet could contribute to endotoxemia by causing changes in gastrointestinal barrier function or the composition of enteric flora. We offer the following comments. The Western-style diet is characterized by consumption of high amounts of saturated fatty acids and simple sugars, especially fructose. Consumption of fructosesweetened products has grown 5-fold in the last century and doubled in the last 3 decades.2 Fructose ingestion is ssociated with intestinal bacterial dysbiosis and inreased gut permeability.3 Endotoxins, which are found in he outer cell membrane of gram-negative bacteria, can be bsorbed from gastrointestinal tract into the blood circuation via translocation.4 The proinflammatory action of igh fructose consumption owing to increased intestinal ranslocation of endotoxins was shown in an experimenal study.5 Dysbiosis of the intestinal flora may lead to gastrointestinal barrier impairment. Thus, the high fructose content of the Western-style diet may also be responsible for endotoxemia originating from the gut, along with its high fat content.


Surgery Today | 2011

Combined hepatocellular and cholangiocarcinoma associated with hepatolithiasis: Report of a case

Kemal Deniz; Edip Torun; Mehmet Celikbilek; Erdoğan Sözüer

Combined hepatocellular and cholangiocarcinoma is a rare form of primary hepatic carcinoma. We present a case of combined hepatocellular and cholangiocarcinoma coexisting with hepatolithiasis in a 53-year-old woman. The tumor was detected during surgery for the treatment of intrahepatic stones. A left hepatectomy was performed. A histologic examination of the specimen revealed typical features of combined hepatocellular and cholangiocarcinoma. Immunohistochemical analyses showed a biphenotypic antigen expression profile of the tumor cells. Risk factors commonly related to the development of this type of tumor include viral hepatitis and cirrhosis. This report describes an unusual etiologic factor that has not been reported previously.

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