Serkan Ocal
Başkent University
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Publication
Featured researches published by Serkan Ocal.
European Journal of Gastroenterology & Hepatology | 2011
Abdullah Emre Yildirim; Reskan Altun; Sevinç Can; Serkan Ocal; Enver Akbas; Murat Korkmaz; Haldun Selcuk; Ugur Yilmaz
Chylous ascites is the accumulation of lipid-rich lymph in the peritoneal cavity. The usual cause in adults is lymphatic obstruction or leakage caused by malignancy. Non-malignant causes include postoperative trauma, cirrhosis, tuberculosis, pancreatitis and filariasis. A variety of treatment options have been proposed for the management of chylous ascites; however, their effectiveness in idiopathic or primary form is unknown. Here we report a case of chylous acid rapidly resolved with the treatment of fasting, total parenteral nutrition and somatostatin analogue.
Journal of the Pancreas | 2010
Serkan Ocal; Haldun Selcuk; Murat Korkmaz; Hakan Ünal; Ugur Yilmaz
CONTEXT Drugs are related to the etiology of acute pancreatitis in approximately 1.4-2.0% of cases. Although antibiotics constitute a small number of the drugs suspected, tetracycline is the most encountered antibiotic among those drugs. CASE REPORT A 33-year-old woman was admitted to the emergency room complaining of nausea and abdominal pain after the use of doxycycline 500 mg and ornidazole 500 mg twice daily for three days for a vaginal infection. She experienced epigastric pain, which worsened over time and radiated to her back. After a detailed evaluation, she was diagnosed as having mild acute pancreatitis which improved with medical treatment. All other possible causes of pancreatitis were eliminated. CONCLUSIONS Antibiotic-associated pancreatitis usually has a silent and mild course. To the best of our knowledge the literature reports only two cases of doxycycline-induced acute pancreatitis reported and there are no reports of pancreatitis associated with ornidazole. Our case is the first case reported in which doxycycline and ornidazole coadministration induced acute pancreatitis.
Diseases of The Esophagus | 2013
Reskan Altun; Enver Akbas; Abdullah Emre Yildirim; Serkan Ocal; Murat Korkmaz; Haldun Selcuk
Eosinophilic esophagitis (EoE) is a chronic, immune/antigen-mediated esophageal disease characterized with symptoms related to esophageal dysfunction and eosinophil-predominant inflammation. There has been a dramatic increase in the diagnosis of this disease in recent years. The primary objective of this study was to determine the frequency of EoE in adult patients who were evaluated by gastroenterologists in our clinic with esophageal symptoms. Between November 2010 and May 2011, 311 adult patients who were evaluated in our clinic with esophageal symptoms were enrolled prospectively. All patients underwent endoscopy and had biopsies taken. Gastroesophageal reflux disease was excluded by either proton pump inhibitory treatment or 24-hour ambulatory pH monitorization. The diagnosis was confirmed by one independent pathologist. Frequency of EoE in patients with esophageal symptoms was 2.6% (n = 8; four men and four women). Mean age at diagnosis was 40.2 ± 8 years. Heartburn was the predominant symptom in patients (75% of the patients), and 87.5% (n = 7) of patients had more than one symptom at diagnosis. Nearly 38% of the patients (n = 3) had a history of allergic disease. Endoscopic findings were as follows: transient/fixed esophageal rings (25%), white exudates (25%), and normal appearance (50%). Median number of circulating eosinophils was 208 (93-659)/mm(3) . Median number of intraepithelial eosinophils in proximal-middle 1/3 part and distal 1/3 part of esophagus were 0 (0-50)/hpf and 37 (16-50)/hpf, respectively. In conclusion, EoE is not rare in Turkey, and it should be considered in the differential diagnosis of patients with esophageal symptoms.
Saudi Journal of Gastroenterology | 2014
Serkan Ocal; Haldun Selcuk; Murat Korkmaz; Reskan Altun; Abdullah Emre Yildirim; Enver Akbas
Background/Aims: The efficacy of immune response against hepatitis C virus (HCV) is determined by human leukocyte antigen (HLA) molecules of the host which present HCV antigens to CD4 + and CD8 + T lymphocytes. In this study, we aimed to investigate the possible relationship between the frequencies of certain HLA class I–II alleles and the natural history of HCV in patients with end-stage renal disease (ESRD). Settings and Design: This is a retrospective cohort study conducted in a university hospital. Patients and Methods: The present study comprised 189 ESRD patients (candidates for renal transplantation) who had positive anti-HCV antibody test. The results concerning HCV and HLA status were gathered from patients’ files. The viral persistence was compared between the groups that were determined by HLA sub-typing. Statistical Analysis: Statistical evaluation was performed using Mann–Whitney U-test, Chi-square test, and Fishers exact test. Level of error was set at 0.05 for all statistical evaluations, and P values < 0.05 were considered statistically significant. Results: We found possible association between the course of HCV infection and specific HLA alleles. HLA class I Cw*6 and HLA class II DRB*10 alleles were observed more frequently in the viral clearance group (P < 0.05). The HLA class I B*38 allele group was more prone to develop chronic hepatitis C (P < 0.01). Conclusions: These findings suggest that HLA class I Cw*6 and HLA class II DRB*10 alleles may be associated with immunological elimination of HCV in Turkish patients on hemodialysis. HLA sub-typing could help predict the prognosis of HCV infection.
Journal of Gastrointestinal and Digestive System | 2015
Abdullah Emre Yildirim; Serkan Ocal; Ruhsen Ocal; Reskan Altun; Murat Korkmaz; Haldun Selcuk
Delirium is a complex neuropsychiatric syndrome that typically involves a plethora of cognitive and non-cognitive symptoms, resulting in a broad spectrum of differential diagnosis dominated by mental disorders. The prevalence of delirium in elderly patients admitting to hospital is 5-55% [1]. Delirium is a common neuropsychiatric syndrome that may occur in several different settings and one of them is vitamin B12 deficiency. Vitamin B12 deficiency causes many cerebral cortex abnormalities such as confusion, mood and memory changes, delirium with or without hallucinations, depression and acute psychotic states [2,3]. Hepatic encephalopathy (HE) describes the spectrum of potentially reversible neuropsychiatric abnormalities seen in patients with liver dysfunction after exclusion of unrelated neurologic and/or metabolic abnormalities. The clinical manifestations of HE is characterized by cognitive and motor deficits of varying severity without specific lesions in the central nervous system. The symptoms range from minimal changes in personality to coma, including delirium [4]. Usually, in the elderly patients with cirrhosis, it is hard to differentiate two clinical situations. Here we report a case of an elderly patient with cirrhosis who experienced delirium due to vitamin B12 deficiency, but was treated as HE before.
Saudi Journal of Gastroenterology | 2016
Murat Kekilli; Ibrahim Koral Onal; Serkan Ocal; Zeynal Doğan; Alpaslan Tanoglu
Background/Aim: Increasing resistance of Helicobacter pylori to antimicrobials necessitated the development of new regimens and the modification of existing regimens. The present study aimed to compare the efficacy of two bismuth-containing quadruple regimens–one including clarithromycin (C) instead of metronidazole (M) and triple therapy. Patients and Methods: Patients with H. pylori infection given the following regimens were sequentially enrolled in this retrospective study: (1) Triple therapy: Lansoprazole 30 mg b.i.d., clarithromycin 500 mg b.i.d., and amoxicillin 1 g b.i.d., (2) bismuth group C: Lansoprazole 30 mg b.i.d., clarithromycin 500 mg b.i.d., amoxicillin 1 g b.i.d., and bismuth subsalicylate 524 mg b.i.d., and (3) bismuth group M: Lansoprazole 30 mg b.i.d., amoxicillin 1 g b.i.d., metronidazole 500 mg t.i.d., and bismuth subsalicylate 524 mg b.i.d. for 14 days. Gastroscopy and 14C-urea breath test were performed before enrollment, and urea breath test was repeated four weeks after the treatment. Results: At per-protocol analysis, the eradication rates were 64.7% (95% confidence interval 60.4–68.7) with the triple therapy (n = 504), 95.4% (95% confidence interval 91.5–99.4) with the bismuth group C (n = 501), and 93.9% (95% confidence interval 89.7–98.7) with the bismuth group M (n = 505). The eradication rates were similar between the two bismuth groups (P > 0.05) but significantly greater than that of the triple therapy (P < 0.05). Conclusion: In our study, both of the bismuth-containing quadruple therapies reached high eradication rates, whereas triple therapy was shown to be ineffective. Moreover, clarithromycin may also be a component of bismuth-containing quadruple therapy.
The Turkish journal of gastroenterology | 2014
Reskan Altun; Yıldırım E; Serkan Ocal; Enver Akbas; Harman A; Kormaz M; Haldun Selcuk
BACKGROUND/AIMS The purpose of this study was to evaluate the technical/hemodynamic success, complications, and biochemical/ hematologic consequences of transjugular intrahepatic portosystemic shunt (TIPS) created with 10-mm bare stents in our patients. MATERIALS AND METHODS Data of 27 cirrhotic patients (18 men and 9 women; mean age, 39.7±18.7 years) with a median MELD score 14 (range 7-31) treated with TIPS between January 2000 and August 2010 were evaluated retrospectively. RESULTS The indications were refractory bleeding varices in 48.2%, refractory ascites in 22.2%, and Budd-Chiari syndrome in 29.6% of the patients. Technical and hemodynamic success rates were 96.3% and 92.3%, respectively. Mean portosystemic pressure gradient decreased from 21.5±5.3 mm Hg to 9±2.7 mm Hg (p<0.05). The rate of primary stent patency was 76.9% 1 year after the procedure. No statistically significant difference in shunt dysfunction was found between the groups of patients treated for Budd-Chiari syndrome and other indications (p>0.05). One patient (3.7%) had shunt dysfunction due to thrombosis within 24 hours. New and/or worsening hepatic encephalopathy occurred in 34.6% of patients. Increased age (≥40 years) was significantly related to hepatic encephalopathy in both univariate and multivariate analyses (p<0.05). Thirty-day mortality rate and 1-year transplant-free survival rate were 0% and 80.7%, respectively. CONCLUSION Transjugular intrahepatic portosystemic shunt procedure is a safe treatment for many patients with cirrhosis, but post-procedure hepatic encephalopathy and shunt dysfunction are still problems. Especially, patient age should be taken into consideration in predicting hepatic encephalopathy risk.
Psychiatry Research-neuroimaging | 2018
Berna Bulut Çakmak; Güler Özkula; Sedat Isikli; İbrahim Özkan Göncüoğlu; Serkan Ocal; Ali Ercan Altınöz; Nilgün Taşkıntuna
Previous studies have identified a link between anger and somatization. However, little is known about the associations between anger and the development and progression of Functional Gastrointestinal Disorders (FGID). The study aim was to determine the associations between FGID and anger, anxiety, and depression. Participants in this cross-sectional observational study were 109 consecutive patients aged 18-64 years with FGID at Gastroenterology Clinic of Başkent University Hospital. A control group comprised of 96 individuals with no chronic gastrointestinal disorders recruited via snowball sampling. Sociodemographic and clinical information were obtained and participants completed the Hospital Anxiety and Depression Scale and the State-Trait Anger Expression Inventory-2. FGID participants scored higher than controls on depression, anxiety, state anger, and anger expression-in. When the FGID group was divided into upper and lower gastrointestinal symptom groups, the lower symptom group showed higher anger expression-out scores than the upper symptom group. Anger may contribute to the etiology and development of FGID. This is the first study to demonstrate a significant psychological difference between individuals with lower and upper FGID. Interdisciplinary collaboration with gastroenterologists and psychiatrists could strengthen FGID evaluation and may improve treatment compliance.
The Turkish journal of gastroenterology | 2017
Nurettin Suna; Serkan Ocal; Diğdem Özer Etik; Haldun Selcuk; Fatih Hilmioglu; Sedat Boyacioglu
An 89-year-old woman was admitted with complaints of nausea, vomiting, and epigastric pain after having meals. A computed tomography scan of the abdomen showed a 12.5-cm mass in the fundus of the stomach, which extended to the duodenum (Figure 1). Upper gastrointestinal endoscopy showed a polypoid lesion with a thick and long stalk that originated from fundus and extended to the duodenum. The head of the lesion prolapsed through the pylorus into the duodenal bulb and caused gastric outlet obstruction (Figure 2). Turk J Gastroenterol 2017
The Turkish journal of gastroenterology | 2017
Nuretdin Suna; Diğdem Özer Etik; Serkan Ocal; Haldun Selcuk; Fatih Hilmioglu; Sedat Boyacioglu
A 40-year-old healthy woman was evaluated as a donor candidate for living donor liver transplantation. Her medical history was unremarkable. She had completely normal physical examination and laboratory results. It was seen on endoscopic retrograde cholangiography imaging (Figure 1a) and magnetic resonance cholangiopancreatography imaging (Figure 1b) that the right lobe posterior segment bile duct opened to the segment II bile duct and that the segment II bile duct merged with the common trunk of segment III and segment IV bile ducts, thus forming the left hepatic bile duct. Turk J Gastroenterol 2017; 28: 219-20