Publications by authors named "Victor Manuel Navas-Lopez"

Introduction: Crohn's disease (CD) varies by location, potentially affecting therapy efficacy and surgery risk, although research on this topic is conflicting. This study aims to investigate the independent association between CD location and therapeutic patterns.

Methods: We analyzed patients with CD diagnosed from January 2005 to May 2023 registered in the nationwide ENEIDA registry.

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Background & Aims: The Crohn's Disease (CD) Exclusion Diet (CDED)+Partial Enteral Nutrition (PEN) is effective for inducing remission in mild-moderate CD. We assessed whether a 2-week course of Exclusive Enteral Nutrition (EEN), followed by CDED+PEN is superior to 8 weeks of EEN in sustaining clinical remission at week 14 in mild-to-severe CD and if CDED+PEN can maintain remission to week 24.

Methods: This international, multicenter, randomized-controlled trial compared 2-weeks of EEN (Modulen®IBD) followed by 3 phases of the CDED+PEN (henceforth CDED) to 8 weeks of EEN, followed by PEN with free diet up to week 24 (henceforth EEN).

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Introduction: Paediatric gastrointestinal endoscopy (pGIE) has advanced significantly over the last decade, with increased diagnostic and therapeutic applications.

Objectives: This study examines the current state of pGIE in Spain, changes in the field over 5 years, and the involvement of paediatric gastroenterologists (pGEs).

Materials And Methods: A structured self-administered questionnaire was distributed by the Endoscopy Working Group of the Spanish Society of Paediatric Gastroenterology, Hepatology, and Nutrition (SEGHNP) through the REDCap platform.

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Background: To advance personalized medicine in pediatric Crohn's disease (CD), we aimed to explore the utility of serological biomarkers in predicting response to anti-tumor necrosis factor (TNF).

Methods: Children with CD were enrolled at initiation of anti-TNF and followed prospectively at 4 and 12 months thereafter, as well as at last follow-up. At baseline, 10 serological markers of the "PROMETHEUS® IBD sgi Diagnostic test" were measured, including pANCA, ASCA IgG and IgA, anti-CBir1, anti-OmpC, anti-A4-Fla2, anti-Fla-X, SAA, ICAM-1 and VCAM-1.

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Article Synopsis
  • Pediatric inflammatory bowel disease (PIBD) significantly affects family dynamics and caregiver work productivity, leading to economic strain on families.
  • A multicenter study involving 370 parents of PIBD patients aged 10-18 revealed a 22.9% unemployment rate among caregivers, notably higher for mothers at 30.7%, with absenteeism and presenteeism further complicating work situations.
  • The research highlights the need for targeted support and policy improvements to reduce the socioeconomic impact on families caring for children with PIBD.
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(1) Background: Pediatric dysphagia presents significant nutritional challenges, often impacting growth and development due to reduced oral intake, increased nutritional needs, and gastrointestinal complications; (2) Methods: This prospective quasi-experimental study assessed 117 children under 14 years old (20 patients were under 1 year old, 80 were aged 1-7 years, and 17 were older than 7 years), diagnosed with swallowing disorders, to analyze their caloric, macro-, and micronutrient intake and identify potential deficiencies. The severity of dysphagia was established using functional oral intake scales, and dietary records were reviewed over a 3-day period; (3) Results: The study revealed that 39.8% of participants did not meet their total energy expenditure (TEE), highlighting a high prevalence of malnutrition among these children.

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Background And Aims: We aimed to identify serum metabolites associated with mucosal and transmural inflammation in paediatric Crohn disease [pCD].

Methods: In all, 56 pCD patients were included through a pre-planned sub-study of the multicentre, prospective, ImageKids cohort, designed to develop the Paediatric Inflammatory Crohn magnetic resonance enterography [MRE] Index [PICMI]. Children were included throughout their disease course when undergoing ileocolonoscopy and MRE and were followed for 18 months, when MRE was repeated.

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Background: Tofacitinib has recently been approved for treatment of moderate-to-severe ulcerative colitis (UC) in adults, yet pediatric data are limited. This international multicenter study describes the effectiveness and safety of tofacitinib in pediatric UC.

Methods: This is a retrospective review of children diagnosed with UC treated with tofacitinib from 16 pediatric centers internationally.

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Background And Objectives: Current data on ustekinumab therapy in children with ulcerative colitis (UC) or unclassified inflammatory bowel disease (IBDU) are limited. We aimed to evaluate the effectiveness and safety of ustekinumab in pediatric UC and IBDU.

Methods: This multicenter retrospective study included 16 centers affiliated with the IBD Interest and Porto groups of ESPGHAN.

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Unlabelled: IMPACT-III and IMPACT-III-P are health-related quality of life (HRQoL) questionnaires for patients with pediatric inflammatory bowel disease (p-IBD) and their parents/caregivers. We aimed to perform a transcultural adaptation and validation for the Spanish context. Translation, back-translation, and evaluation of the questionnaires were performed by an expert committee and 12 p-IBD families.

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Introduction: Inflammatory bowel disease (IBD) is a chronic disorder that can lead to periods of work-related temporary disability (TD), which may result in the need for permanent disability. The objective was to assess the impact of IBD on patients' temporary disability by analyzing periods, duration, and causes. It also investigates risk factors influencing the severity, frequency, and duration of flare-ups and associated complications in IBD patients.

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Ustekinumab is an effective therapy for adult Crohn's disease (CD), but data in paediatric CD patients are scarce. The aim of the study was to describe the real-life effectiveness and safety of ustekinumab in paediatric CD. This is a multicentre review of children with Crohn's disease treated with ustekinumab.

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Article Synopsis
  • This study focuses on how gene expression changes may affect pediatric patients with inflammatory bowel diseases (IBDs) in their response to anti-TNF treatments like infliximab and adalimumab.
  • Researchers analyzed blood samples from 24 patients to identify genes that could predict early treatment responses, discovering 102 differentially expressed genes.
  • Key findings included four validated genes (CEACAM8, LCN2, LTF2, and PRTN3) that showed increased expression in responders, highlighting their potential role in treatment effectiveness and involvement in immune responses.
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Dietary therapy is increasingly recognized for the management of Crohn's disease (CD) over recent years, including the use of exclusive enteral nutrition (EEN) as first-line therapy for pediatric CD according to current guidelines. The Crohn's disease exclusion diet (CDED) is a whole-food diet designed to reduce exposure to dietary components that are potentially pro-inflammatory, mediated by negative effects on the gut microbiota, immune response, and the intestinal barrier. The CDED has emerged as a valid alternative to EEN with cumulative evidence, including randomized controlled trials, supporting use for induction of remission and possibly maintenance in children and adults.

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(1) Background: Ulcerative colitis (UC) is a chronic colon inflammation caused by genetic and environmental factors, including diet. This systematic review and meta-analysis aims to assess the impact of diet on UC management in children and adults (2) Methods: A comprehensive search across databases yielded relevant studies, and risk of bias in randomized controlled trials (RCTs) was assessed using the Cochrane Risk of Bias tool. This study was conducted in conformity to the 2020 PRISMA guidelines.

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Management of cow's milk protein allergy (CMPA) can vary depending on the experience and area of expertise of the clinician responsible for the patient's follow-up, which may or may not align with the recently published literature. To analyze the perspectives of Spanish pediatricians on this topic, a survey was conducted. The survey aimed to determine the current opinions and attitudes of 222 primary care and hospital pediatricians toward CMPA prevention and nutritional management.

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(1) Background: Transition is a planned movement of paediatric patients to adult healthcare systems, and its implementation is not yet established in all inflammatory bowel disease (IBD) units. The aim of the study was to evaluate the impact of transition on IBD outcomes. (2) Methods: Multicentre, retrospective and observational study of IBD paediatric patients transferred to an adult IBD unit between 2017-2020.

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Phase angle (PhA) is a valuable tool for evaluating the nutritional and inflammatory status, which can accompany acute and severe disorders. PhA is a cellular health biomarker, whose value is particularly substantial due to the negative consequences of these situations in the pediatric population. Relevant literature was collected with the aim of comprehensively analysing the evidence on the association between an altered PhA can serve as a predictive-marker for mortality and poor-outcomes in at-risk-pediatric patients.

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Article Synopsis
  • * A total of 340 pediatric patients treated with infliximab or adalimumab were genotyped for 9 specific genetic variants, revealing that certain variants are linked to poorer long-term treatment outcomes.
  • * Identifying these genetic markers could help tailor anti-TNF therapy for children, allowing healthcare providers to better predict which patients are likely to benefit in the long run, pending further validation.
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Celiac disease (CD) is included in the group of complex or multifactorial diseases, i.e., those caused by the interaction of genetic and environmental factors.

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Article Synopsis
  • * Researchers used methods of Mendelian randomization to investigate whether CeD directly increases the risk of eight types of cancer, finding a significant connection specifically with mature T/NK cell lymphomas.
  • * The study suggests that the relationship between CeD and these malignancies is independent of other lymphoma risk factors, highlighting the role of immune system dysfunction in the development of serious conditions like enteropathy-associated T-cell lymphoma.
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