Publications by authors named "Nevzat Aykut Bayrak"

Introduction: Elevated transaminases and/or creatine phosphokinase can indicate underlying muscle disease. Therefore, this study aims to determine the frequency of Duchenne muscular dystrophy/Becker muscular dystrophy (DMD/BMD) in male children and Pompe disease (PD) in male and female children with isolated hypertransaminasemia.

Methods: This multi-center, prospective study enrolled patients aged 3-216 months with serum alanine transaminase (ALT) and/or aspartate transaminase (AST) levels >2× the upper limit of normal (ULN) for ≥3 months.

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Objectives: To assess the effects of a gluten-free diet on bone structure in children with celiac disease using fractal analysis on panoramic radiographs.

Method And Materials: A total of 49 patients with celiac disease aged 6 to 13 years, separated into two groups as previously and newly diagnosed, and a control group of 32 healthy individuals were evaluated. In previously and newly diagnosed patients with celiac disease, body mass index Z-scores were calculated, calcium, alkaline phosphatase, vitamin D3, and parathormone levels were measured, and bone mineral density Z-scores were obtained from dual energy x-ray absorptiometry.

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Objective: Over the past decades, the incidence of acute pancreatitis is increasing, but the progression of acute recurrent pancreatitis and chronic pancreatitis is still not well documented in children. The aim of this multicenter study is to delineate the changes that occur in a certain time period in the course of childhood pancreatitis.

Materials And Methods: The data of consecutive patients hospitalized with acute pancreatitis between 2010 and 2017 in 4 different pediatric gastroenterology units were reviewed.

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Background: Celiac disease (CD) is one of the most prevalent chronic disorders. The clinical manifestations of CD are diverse and may present with gastrointestinal findings, extra-intestinal findings or no symptoms. Although there has been a marked increase in the prevalence of CD in the past 30 years, up to 95% of patients with CD remain undiagnosed.

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Background: Data about cytomegalovirus (CMV) colitis in children are scarce. We aimed to describe the characteristics of childhood CMV colitis in terms of risk factors, clinical symptoms, diagnosis, therapeutic approaches, and outcomes.

Methods: Inflammatory bowel disease (IBD) and non-IBD patients with CMV colitis diagnosed by histology and tissue CMV PCR at 2 tertiary centers between January 2017 and November 2019 were studied.

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This study aimed to determine the prevalence of infantile functional gastrointestinal disorders (FGIDs) based on Rome IV diagnostic criteria, and to determine the associated patient demographic and nutritional characteristics. A total of 2383 infants aged 1-12 months which were evaluated by 28 general pediatricians and pediatric gastroenterologists on the same day at nine tertiary care hospitals around Istanbul, Turkey, between November 2017 and March 2018, were included in the study. Patients included consulted the pediatric outpatient clinics because of any complaints, but not for vaccines and/or routine well child follow-ups as this is not part of the activities in the tertiary care hospitals.

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Objectives: Data regarding Helicobacter pylori (Hp) infection frequency in concurrent celiac disease (CD) and type 1 diabetes mellitus (T1DM) (CD + T1DM) are anecdotal. This study aimed to evaluate the association between Hp and concomitant CD + T1DM in children.

Methods: In this 2-center, case-control study, children who underwent esophago-gastro-duodenoscopy (EGD) were studied.

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Background: An inverse association has been suggested between celiac disease (CD) and Helicobacter pylori (Hp) infection in children; however, there are inconsistent data. The purpose of this multi-center study is to evaluate the association between Hp and CD in childhood.

Methods: Children who underwent endoscopy between July 2016 and November 2017 in four pediatric gastroenterology centers were included in the study.

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Article Synopsis
  • The study investigated the links between the age of first menstruation, stages of puberty, and factors like diet adherence, hormone levels, nutrient status, and BMI in children with celiac disease (CD).* -
  • Researchers compared 228 CD patients to 135 healthy controls, finding CD patients had later menarche and lower Tanner stages, indicating less advanced puberty.* -
  • After one year, better adherence to a gluten-free diet was significantly associated with improved Tanner stage and nutrient levels, suggesting proper diet and nutrition are crucial for healthy puberty in CD patients.*
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Background/aims: This study aimed to determine whether the anxiety levels of pediatric patients who undergo endoscopy are reduced after receiving preparatory information about the endoscopic procedure by monitoring their salivary cortisol (s-cortisol) levels.

Patients And Methods: A total of 184 children undergoing gastroscopy under sedoanalgesia were included in the study. All the patients received a brief explanation of the endoscopic procedure.

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Background And Objectives: Bowel preparation (BP) for colonoscopy is a challenging procedure in children and different regimens have been used for this purpose. Polyethylene glycol (PEG) is the most preferred agent in recent years. The primary aim of this study was to evaluate the efficacy of 1-day PEG-3350 with bisacodyl (PEG-B) and comparing it with 3-day sennosides A+B.

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Objectives: Esophagogastroduodenoscopy (EGD) can cause fear and anxiety in children. Cortisol, which is the most important glucocorticoid hormone in humans, can increase under physiological stress. The purpose of this study was to measure the salivary cortisol level (SCL) and anxiety level in patients undergoing EGD and evaluate their effects on the procedure.

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Background/aims: The aim of this study was to evaluate the consistency of the Savary-Miller, the Hetzel-Dent and the Los Angeles endoscopic classification systems and to compare them with the esophageal histopathology in children.

Material And Methods: Children between the ages of 5-17 years who underwent esophagogastroduodenoscopy were included in the study. The endoscopic reports and the still images of the esophagus were reclassified by the same gastroenterologist according to the Savary-Miller, Hetzel- Dent and Los Angeles scoring systems.

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