Publications by authors named "Tibor Hlavaty"

Background: Despite long-term use of infliximab (IFX) in IBD treatment, its optimized use is unclear due to its complicated pharmacokinetics/dynamics. Hence, the predictive value of IFX trough levels (TL) is important in treatment management.

Methods: We performed a prospective, cross-sectional, observational study with 74 IBD patients treated with IFX (mean 9.

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Background: The objective of this non-interventional, observational prospective cohort study (CONNECT-IBD) was to assess the use of CT-P13 (Inflectra®) in the treatment of patients with Crohn's disease (CD) and ulcerative colitis (UC) in the context of treatment with reference infliximab (IFX; Remicade®).

Methods: Patients (recruited April 2015 to October 2018) at 150 sites across 13 European countries were followed for up to 2 years. Primary outcomes were safety, population characteristics, and drug utilization patterns.

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The role of cell-free DNA (cfDNA) in the pathogenesis of inflammatory bowel disease (IBD) has been recently suggested. The aim of this study was to analyze circulating cfDNA and deoxyribonuclease (DNase) activity in IBD patients in clinical remission. Plasma and serum were obtained from 72 patients with Crohn's disease and 28 patients with ulcerative colitis.

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Higher probability of the development of Crohn's disease (CD) and ulcerative colitis (UC) as a possible consequence of the north-south gradient has been recently suggested. Living far north or south of the equator is manifested in fluctuation of vitamin D (vitD) levels depending on the season in both healthy and affected individuals. In the present study we investigate the possible link between the seasonal serum vitD level to the microbial composition of the lower gut of Inflammatory Bowel disease (IBD) patients using 16S rRNA sequencing.

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This article is the second in a series of two publications relating to the European Crohn's and Colitis Organisation [ECCO] evidence-based consensus on the management of Crohn's disease. The first article covers medical management; the present article addresses surgical management, including preoperative aspects and drug management before surgery. It also provides technical advice for a variety of common clinical situations.

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Objectives: Osteoporosis and osteopaenia are known chronic complications of inflammatory bowel diseases. The trabecular bone score (TBS) provides an indirect measurement of bone microarchitecture, independent of bone mineral density (BMD).

Patients And Methods: The study was designed as a case-control study with the aim to assess and compare bone quantity and quality in patients with Crohn's disease (CD).

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Aim: To analyze 1-year liver injury burden in inflammatory bowel disease (IBD) patients.

Methods: During a 6-mo inclusion period, consecutive IBD cases having a control visit at IBD center were included. Basic demographics, IBD phenotype and IBD treatment were recorded on entry.

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Hemosuccus pancreaticus is a rare cause of upper digestive tract bleeding, it is hemorrhage to the pancreatic duct. A case report is about 56-years old man who was repeatedly hospitalized and suffered from melena and enterorrhagia during 3 years. Imaging studies did not clearly identified etiology of bleeding or source of hemorrhage was wrong identified.

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Introduction And Objectives: Hepatic transit times measured by the contrast enhanced ultrasonography and liver elasticity were found to predict a clinically significant portal hypertension. However, these modalities we not yet sufficiently evaluated in predicting adverse clinical outcome in patients with clinically diagnosed cirrhosis (D´Amico stages > 1), having a clinically significant portal hypertension. The aim of our study was to assess the predictive power of the liver transit times and the liver elasticity on an adverse clinical outcome of clinically diagnosed cirrhosis compared with the MELD score.

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Fecal microbiota transplantation (FMT) is a therapeutic method, in which the fecal microflora from healthy donors is transmitted to the patient to restore the healthy microbial composition of the gut. In the recent years, there is a growing interest in the therapeutic potential of FMT in various diseases. The standard FMT protocols do not exist.

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Inflammatory bowel disease is often accompanied by extraintestinal manifestations due to a common autoimmune etiopathogenesis, chronic systemic inflammation, frequent nutrition deficits, and the treatment. Endocrine system changes belong to manifestations too. Interaction is mutual, Crohn's disease and ulcerative colitis cause functional and morphological changes of endocrine tissues.

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Unlabelled: Inflammatory bowel disease is often accompanied by extraintestinal manifestations due to a common autoimmune etiopathogenesis, chronic systemic inflammation, frequent nutrition deficits, and the treatment. Endocrine system changes belong to manifestations too. Interaction is mutual, Crohn´s disease and ulcerative colitis cause functional and morphological changes of endocrine tissues.

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Background: The north–south geographical gradient of inflammatory bowel disease (IBD) prevalence, its epidemiology, the genetic association of vitamin D receptor polymorphisms, and results in animal models suggest that vitamin D plays an important role in the pathogenesis of IBD.

Aims: The purpose of this review was to critically appraise the effectiveness and safety of vitamin D therapy in patients with IBD.

Methods: MEDLINE, Scopus and Google Scholar were searched from inception to May 20, 2014 using the terms ‘Crohn’s disease’, ‘ulcerative colitis’ and ‘vitamin D’.

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Biological drugs opened up new horizons in the management of inflammatory bowel diseases (IBD). This study focuses on access to biological therapy in IBD patients across 9 selected Central and Eastern European (CEE) countries, namely Bulgaria, the Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Romania and Slovakia. Literature data on the epidemiology and disease burden of IBD in CEE countries was systematically reviewed.

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Aim: To investigate the effect of vitamin D (VD) concentrations and VD supplementation on health related quality of life in inflammatory bowel disease (IBD) patients.

Methods: A cohort of 220 IBD patients including 141 Crohn's disease (CD) and 79 ulcerative colitis (UC) patients was followed-up at a tertiary IBD center. A subgroup of the cohort (n = 26) took VD supplements for > 3 mo.

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Objective: There is a high prevalence of low bone mineral density (BMD) among patients with inflammatory bowel disease (IBD) although there is a lack of clinical data on the impact of IBD specific medications and recommended vitamin D (VD) and calcium (Ca) supplements on it.

Design: The cohort consisted of 150 IBD patients. The average change in BMD at the lumbar spine per year (∆BMDL/year) was calculated and the impact of clinical characteristics, medications and VD and Ca supplements was analysed.

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A biosimilar is a copy of an approved biological medicine whose patent protections have expired. Biosimilars of antibodies to tumour necrosis factor α (TNFα) are becoming important in the treatment of inflammatory bowel diseases (IBD). The first one introduced commercially is an infliximab biosimilar.

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We report here an unusual case of delayed hypersensitivity reaction in a young woman with ulcerative colitis after the first administration of infliximab (IFX). The patient developed severe serum-sickness-like reaction, and her anti-IFX antibody titer increased rapidly after a single infusion of IFX. The possible reason for the delayed hypersensitivity reaction to a single IFX exposure might be the presensitization of the patient by murine antigens as she had been keeping mice and hamsters as pets for several years.

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Background: The aetiology of inflammatory bowel disease (IBD) is not known but is likely to involve a combination of genetic predisposition and environmental risk factors. Smoking has been associated consistently with a higher risk of Crohn's disease (CD), while appendectomy and smoking appear to diminish the risk of ulcerative colitis (UC). The roles of other environmental factors are unclear.

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Cholelithiasis and nonalcoholic fatty liver disease (NAFLD) share the same risk factors. The aim of our study was to explore the relationship between these two conditions and to identify independent predictors of both diseases in a cohort of patients with metabolic risk factors. Consecutive patients with metabolic risk factors referred to the outpatient clinic during a one-year period were included.

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Background: Patients with ulcerative colitis and Crohn's colitis have increased risk of colorectal cancer. Current screening endoscopy protocols based on white light endoscopy (WLE) and random biopsies are laborious and of uncertain sensitivity. Novel endoscopic techniques include chromoendoscopy (CE) and confocal laser endomicroscopy (CLE).

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Studies in adult inflammatory bowel disease (IBD) patients have highlighted associations with genetic and serologic markers and suggest an association with disease location, behaviour and natural history. Data on patients with Crohn's disease (CD, n=80), ulcerative colitis (UC, n=15) and indeterminate colitis (n=4) were collected. All individuals were analysed for CARD15 R702W, G908R and L1007fs for toll-like receptor 4 (TLR4) Asp299Gly and for anti-Saccharomyces cerevisiae antibodies (ASCA) and atypical perinuclear antineutrophil cytoplasmatic antibodies (pANCA).

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Background: Infliximab (IFX) is an effective therapy for refractory luminal and fistulizing Crohn's disease (CD). Predictors of response could improve selection of patients with a higher probability of favorable outcomes and could improve the safety profile. We aimed to develop a predictive model for the response to infliximab in CD.

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Background & Aims: Early ileocolonoscopy allows detection of recurrence after surgically induced remission of Crohn's disease (CD). Unequivocal histologic markers predicting recurrence have not been identified. We assessed the predictive value of neural lesions for early endoscopic CD recurrence and long-term reintervention risk.

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