A pilot study of the use of the oral and faecal microbiota for the diagnosis of ulcerative colitis and Crohn's disease in a paediatric population.

Crohn's disease (CD) and ulcerative colitis (UC) are chronic inflammatory bowel diseases (IBD) that affect the gastrointestinal tract. Changes in the microbiome and its interaction with the immune system are thought to play a key role in their development. The aim of this study was to determine whether metagenomic analysis is a feasible non-invasive diagnostic tool for IBD in paediatric patients. A pilot study of oral and faecal microbiota was proposed with 36 paediatric patients divided in three cohorts [12 with CD, 12 with UC and 12 healthy controls (HC)] with 6 months of follow-up. Finally, 30 participants were included: 13 with CD, 11 with UC and 8 HC (6 dropped out during follow-up). Despite the small size of the study population, a differential pattern of microbial biodiversity was observed between IBD patients and the control group. Twenty-one bacterial species were selected in function of their discriminant accuracy, forming three sets of potential markers of IBD. Although IBD diagnosis requires comprehensive medical evaluation, the findings of this study show that faecal metagenomics or a reduced set of bacterial markers could be useful as a non-invasive tool for an easier and earlier diagnosis.

What is the best method for calculating the optimal position of an esophageal pH probe in children?

In assessment of distal esophageal pH, the sensor of the probe should be placed above the upper border of the lower esophageal sphincter. There are several methods to estimate the distance from the nose where the probe should be fixed according to the patient's height. We studied the accuracy of these methods. Data of patients who underwent esophageal monitoring were collected prospectively. The esophageal pH electrode was set with the aid of fluoroscopy in all cases, considering the location recommended by the current guideline. Esophageal probe position and anthropometric data of each patient were recorded. We compared the actual esophageal pH electrode distance from the nose with that estimated by Nowak's, Strobel's, Staiano-Clouse's, and Moreau's formulae and the Great Ormond Street Hospital (GOSH) table. A total of 98 patients were included, with ages ranging from 2 months to 19 years old. The highest success rate (67%) for all age groups was achieved by Nowak's formula (3.2 + 0.2 × height in cm). Considering only children under 3 years old, the GOSH table reached the highest-yet probably overestimated-fraction of adequate predictions. A corrected Staiano and Clouse's formula (4.28 + 0.191 × height in cm) had a slightly lower success rate than Nowak's due to a poorer performance in younger children. In conclusion, Nowak's formula is the most accurate regardless of age. It can help reduce radiation due to systematic fluoroscopy, as well as the subsequent manipulation of the esophageal probe. However, it still leads to pH sensor misplacements in more than one-third of children. In consequence, a confirmatory X-ray is advisable even after using the formula.

Coexistencia de enfermedad de Crohn y trombocitopenia inmune primaria y sus implicaciones en el tratamiento / Co-existence of Crohn's disease and primary immune thrombocytopenia and its implications in treatment

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Colitis ulcerosa asociada a hepatitis autoinmune: ¿una forma diferencial de enfermedad inflamatoria intestinal? / Ulcerative colitis associated with autoimmune hepatitis: a differential form of inflammatory bowel disease?

La enfermedad inflamatoria intestinal (EII) es un trastorno inflamatorio crónico del tracto intestinal de patogénesis multifactorial, con posible asociación a distintos desórdenes autoinmunes, entre los cuales se encuentra la hepatitis autoinmune (HAI). Se ha postulado una serie de características diferenciales de la EII asociada a HAI en niños. Nuestro objetivo es describir las características diferenciales observadas en nuestros pacientes con EII asociada a HAI respecto a aquellos con formas clásicas de la enfermedad, confirmando dicha singularidad

Inflammatory bowel Disease (IBD) is a group of chronic inflammatory diseases that can be associated with different autoimmune diseases, including autoimmune hepatitis (AIH).Some specific and differential characteristics in children with IBD associated to AIH have beendescribed. Our aim is to describe the clinical pattern of this association observed in our patients,confirming its differential characteristics as compared to classical IBD in children

[Ulcerative colitis associated with autoimmune hepatitis: a differential form of inflammatory bowel disease?]. / Colitis ulcerosa asociada a hepatitis autoinmune: ¿una forma diferencial de enfermedad inflamatoria intestinal?

Inflammatory bowel Disease (IBD) is a group of chronic inflammatory diseases that can be associated with different autoimmune diseases, including autoimmune hepatitis (AIH). Some specific and differential characteristics in children with IBD associated to AIH have been described. Our aim is to describe the clinical pattern of this association observed in our patients, confirming its differential characteristics as compared to classical IBD in children.

Enfermedad de Crohn y eritema nudoso: ¿es útil la nutrición enteral exclusiva? / Crohn's disease and erythema nodusum: Is exclusive enteral nutrition useful?

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