Publications by authors named "Rok Orel"

Article Synopsis
  • Eosinophilic esophagitis (EoE) is a chronic condition affecting the esophagus, characterized by inflammation and eosinophil infiltration, necessitating updates to existing guidelines due to new medical knowledge.
  • A group of pediatric gastroenterologists reviewed recent studies to create 52 statements and 44 recommendations related to EoE, focusing on diagnostics, treatment options, and diet changes from 2014 to 2022.
  • The updated guidelines highlight the emergence of biologics for treatment, the potential role of steroids for esophageal strictures, and the importance of addressing quality of life and transitioning patients to adult care.
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The recent advisory issued by the United States Food and Drug Administration, cautioning against the routine administration of probiotics in preterm neonates, has sparked a lively debate within the scientific community. This commentary presents a perspective from members of the Special Interest Group on Gut Microbiota and Modifications within the European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN) and other authors who contributed to the ESPGHAN position paper on probiotics for preterm infants, as well as representatives from the European Foundation for the Care of Newborn Infants. We advocate for a more nuanced and supportive approach to the use of certain probiotics in this vulnerable population, balancing the demonstrated benefits and risks.

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Introduction: Eosinophilic gastrointestinal disorders beyond eosinophilic esophagitis (non-EoE EGIDs) are rare chronic inflammatory disorders of the gastrointestinal (GI) tract. Diagnosis is based on clinical symptoms and histologic findings of eosinophilic inflammation after exclusion of a secondary cause or systemic disease. Currently, no guidelines exist for the evaluation of non-EoE EGIDs.

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Prebiotics are substrates that are selectively utilized by host microorganisms conferring a health benefit. Compared to probiotics there are few studies with prebiotics in children. Most studies have been performed using infant formula supplemented with prebiotics, while add-on prebiotic supplementation as prevention or treatment of childhood gastrointestinal disorders has rarely been reported.

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Background: Partial enteral nutrition (PEN) coupled with the Crohn's disease (CD) exclusion diet (CDED) was shown to be effective in inducing clinical remission in paediatric CD. There are currently no robust data on the endoscopic outcomes of PEN. The aim of this study was to evaluate the clinical and endoscopic rates of remission after PEN combined with a modified CDED (mCDED) adjusted to the local cuisine in comparison with exclusive enteral nutrition (EEN) for the induction of remission.

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The ability to perform endoscopy procedures safely and effectively is a key aspect of quality clinical care in Pediatric Gastroenterology, Hepatology and Nutrition (PGHN). The aim of this survey, which was part of a global survey on PGHN training in Europe, was to assess endoscopy training opportunities provided across Europe. Responses to standardized questions related to endoscopy training were collected from training centers across Europe through the presidents/representatives of the European Society for Paediatric Gastroenterology, Hepatology and Nutrition National Societies from June 2016 to December 2019.

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Background: Probiotics, defined as live microorganisms that, when administered in adequate amounts, confer a health benefit on the host, are widely used despite uncertainty regarding their efficacy and discordant recommendations about their use. The European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN) Special Interest Group on Gut Microbiota and Modifications provides updated recommendations for the use of probiotics for the management of selected pediatric gastrointestinal disorders.

Methods: All systematic reviews and/or meta-analyses, as well as subsequently published randomized controlled trials (RCTs) (until December 2021), that compared the use of probiotics in all delivery vehicles and formulations, at any dose, with no probiotic (ie, placebo or no treatment), were eligible for inclusion.

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Article Synopsis
  • The pEEr registry was created to gather and analyze data on children with eosinophilic esophagitis (EoE) from various centers in Europe and Israel, focusing on phenotypic characteristics.
  • A total of 582 children were analyzed, revealing a median diagnosis age of 10.5 years and a common delay in diagnosis, especially in children under 6, with variations in symptoms based on age.
  • Older children more frequently experienced dysphagia and food impaction, while younger children showed non-specific symptoms; treatments differed, with many unresponsive patients receiving topical steroids or elimination diets.
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Background: Pediatric gastrointestinal motility disorders present significant challenges for diagnosis and management, emphasizing the need for appropriate training in Pediatric Neurogastroenterology and Motility (PNGM). The aim of this survey, part of a comprehensive survey on training in pediatric gastroenterology, hepatology and nutrition, was to evaluate training related to PNGM across European training centers.

Method: Standardized questionnaires were collected from training centers through the National Societies Network of the European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN), from June 2016 to December 2019.

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Background: This survey evaluated the effects of the recognition of pediatric gastroenterology, hepatology and nutrition (PGHN) on European PGHN training centers.

Method: Standardized questionnaires were collected from training centers via the presidents/representatives of the National Societies Network of the European Society for Pediatric Gastroenterology, Hepatology and Nutrition, from June 2016 to December 2019.

Results: A total of 100 training centers from 19 countries participated in the survey: 55 from 12 countries where PGHN is formally recognized (Group 1) and 45 from 7 countries where it is not (Group 2).

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Background: The widely recognized burden of liver diseases makes training in pediatric hepatology (PH) imperative. The aim of this survey, which was part of a global survey on training in pediatric gastroenterology, hepatology and nutrition (PGHN) across Europe, was to assess the PH and liver transplantation (LT) infrastructure, staff and training programs in PGHN training centers.

Method: Standardized questionnaires were collected from training centers via the presidents/representatives of the National Societies Network of the European Society for Paediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN) from June 2016 to December 2019.

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Background & Aims: Substantial heterogeneity in terminology used for eosinophilic gastrointestinal diseases (EGIDs), particularly the catchall term "eosinophilic gastroenteritis," limits clinical and research advances. We aimed to achieve an international consensus for standardized EGID nomenclature.

Methods: This consensus process utilized Delphi methodology.

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Objectives/background: Disease-related malnutrition is common in patients with chronic diseases and has detrimental effects, therefore, skills in nutrition care are essential core competencies for paediatric digestive medicine. The aim of this survey, conducted as part of a global survey of paediatric gastroenterology, hepatology and nutrition (PGHN) training in Europe, was to assess nutrition care-related infrastructure, staff, and patient volumes in European PGHN training centres.

Methods: Standardized questionnaires related to clinical nutrition (CN) care were completed by representatives of European PGHN training centres between June 2016 and December 2019.

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: The prevalence of pediatric non-alcoholic fatty liver disease is increasing. A lot of new data are published regularly. : Original clinical studies, review articles, and guidelines in children were searched for and the most relevant included in this review.

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Adolescent and children obesity is a growing concern worldwide. Bariatric surgery is used as an effective treatment for adolescents with obesity and provides physical and mental health benefits. Application of alternative, minimally invasive, safe, and reversible endoscopic procedures, such as the Duodenojejunal bypass liner (DJBL), has been recently suggested as an effective treatment for adolescents with obesity.

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Proton pump inhibitors (PPIs) are amongst the most commonly prescribed drugs in infants and children with the last decades witnessing a dramatic rise in their utilization. Although PPIs are clearly effective when used appropriately and have been regarded as safe drugs, there is growing evidence regarding their potential adverse effects. Although, largely based on adult data it is clear that many of these are also relevant to pediatrics.

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Objectives: The aim of the study was to review the evidence regarding the clinical use and value of fecal calprotectin (FC) measurements in different gastrointestinal disorders in children.

Methods: A literature search was conducted in the PubMed, MEDLINE, EMBASE, and Cochrane databases until October 31, 2019. Subtopics were identified and each assigned to individual authors.

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Objectives: The main aim of this study was to determine the impact on clinical practice of the first European Society of Gastroenterology, Hepatology, and Nutrition (ESPGHAN) position paper on the diagnosis and management of nutritional and gastrointestinal problems in children with neurological impairment (NI).

Methods: In this pilot-study, a web-based questionnaire was distributed between November, 2019 and June, 2020, amongst ESPGHAN members using the ESPGHAN newsletter. Fifteen questions covered the most relevant aspects on nutritional management and gastrointestinal issues of children with NI.

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Thiopurines, alone or in combination with other agents, have a pivotal role in the treatment of specific gastrointestinal and hepatological disorders. In inflammatory bowel disease and autoimmune hepatitis thiopurines have proven their value as steroid sparing agents for the maintenance of remission and may be considered for preventing postoperative Crohn disease recurrence where there is moderate risk of this occurring. Their use with infliximab therapy reduces antibody formation and increases biologic drug levels.

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Since the publication of the 2014 European Society for Paediatric Gastroenterology, Hepatology, and Nutrition Working Group (WG) on Probiotics and Prebiotics guidelines for the management of acute gastroenteritis (AGE), new evidence concerning the efficacy of probiotics has become available. This document provides updated recommendations on the use of probiotics for the treatment of AGE in previously presumed healthy infants and children. A systematic literature search was performed.

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More than 10,000 preterm infants have participated in randomised controlled trials on probiotics worldwide, suggesting that probiotics in general could reduce rates of necrotising enterocolitis (NEC), sepsis, and mortality. Answers to relevant clinical questions as to which strain to use, at what dosage, and how long to supplement are, however, not available. On the other hand, an increasing number of commercial products containing probiotics are available from sometimes suboptimal quality.

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Article Synopsis
  • - The study evaluated how pediatric (PG) and adult gastroenterologists (AG) in Europe and the UAE diagnose and manage eosinophilic esophagitis (EoE), focusing on their adherence to clinical guidelines.
  • - Results showed that PG are more likely to take biopsies and perform endoscopic follow-ups compared to AG; they also prefer elimination diets over steroids as a second-line therapy after proton-pump inhibitors fail.
  • - The findings highlight significant practice differences between PG and AG, as well as regional variations across countries, suggesting that educational initiatives could help improve alignment with current guidelines.
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Acute diarrhoea is a leading cause of morbidity and mortality in the paediatric population. Racecadotril is an antisecretory drug recommended as an adjuvant antidiarrhoeal treatment.In the small bowel, the enzyme neutral endopeptidase (NEP) inhibits the action of enkephalins, which prevent water and electrolyte hypersecretion.

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The aim of this study was to evaluate rates of clinical remission, endoscopic remission, and mucosal healing after a 6-week treatment period with partial enteral nutrition (PEN) and to compare them to those obtained by standard exclusive enteral nutrition (EEN) treatment in children with active Crohn's disease (CD). Twenty-five patients with active CD (median age 13.6 years, range 3.

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Background: Duodenojejunal bypass liner (DJBL) is an endoscopic, reversible bariatric procedure resulting in weight loss and metabolic co-morbidities improvements in the adults.

Objectives: To determine safety and effectiveness of 12-month treatment with DJBL in adolescents with severe obesity (BMI > 35 kg/m) and co-morbidities.

Methods: Post-pubertal subjects were treated with DJBL in an open-label, prospective clinical trial (NTC0218393).

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