[Histopathology of coeliac disease]

The role of IL-37 in gastrointestinal diseases

Gastrointestinal mucosal surface is frequently under challenge due to it's the large surface area and most common entry of microbes. IL-37, an anti-inflammatory cytokine, regulates local and systemic host immunity. H. pylori infection leads to the inhibition of IL-37 in the gastric mucosa, contributing to heightened mucosal inflammation and destruction, thereby facilitating increased proliferation of H. pylori. Food allergy, due to immune dysregulation, also contribute to GI injury. On the other hand, elevated levels of IL-37 observed in gastric cancer patients align with reduced host immunity at the cellular and humoral levels, indicating that IL-37 may contribute to the development of gastric cancer via suppressing pro-inflammatory responses. While IL-37 provides protection in an IBD animal model, the detection of highly produced IL-37 in IBD patients suggests a stage-dependent role, being protective in acute inflammation but potentially exacerbates the development of IBD in chronic conditions. Moreover, elevated colonic IL-37 in CRC correlates with overall survival time and disease time, indicating a protective role for IL-37 in CRC. The differential regulation and expression of IL-37 between upper- and lower-GI organs may be attributed to variations in the microbial flora. This information suggests that IL-37 could be a potential therapeutic agent, depending on the stage and location.

Gluten-Free Diet Compliance in Children With Celiac Disease and Its Effect on Clinical Symptoms: A Retrospective Cohort Study

A gluten-free diet (GFD) is the only scientifically proven treatment for celiac disease (CD). Strict adherence to this diet in children yields excellent results in terms of the clinical symptoms present at the time of diagnosis. Despite the constraints associated with following this diet, it remains the only hope for children with CD to have a better quality of life and life expectancy.

METHODS

A retrospective descriptive cohort study was carried out on children diagnosed with CD in the pediatrics department of the Hassan II University Hospital in Fez, Morocco. The children were followed up for 18 months, during which time they were seen as outpatients at different frequencies depending on their clinical condition and degree of compliance with the diet.

RESULTS

Only half of the diagnosed children continued to follow our structure. Compliance with the gluten-free diet varied from 58.7% (n = 84) of children who strictly followed the GFD to 3.5% (n = 5) of children who never followed the diet. Compliance was significantly correlated with the child's age, with adolescents being the least compliant (p = 0.03). Similarly, a correlation was observed between compliance with the diet and the disappearance of symptoms (p <0.01), the persistence of certain symptoms (p = 0.02), and the occurrence of complications (p = 0.01). The majority of children (87.3%) had their clinical symptoms resolved within a mean delay of 6.4±3.6 months, with a mode of three months. The speed of symptom resolution differed from one symptom to another but remained statistically correlated with the degree of GFD compliance (p = 0.03).

CONCLUSION

Despite the excellent results of a GFD on clinical symptoms in children, the discrepancies observed between compliance and non-compliance call for close follow-up of children with CD to avoid complications and repercussions on the vital prognosis in adulthood.

Celiac disease: Understandings in diagnostic, nutritional, and medicinal aspects

Celiac disease (CD) is characterized by clinical polymorphism, with classic, asymptomatic or oligosymptomatic, and extra-intestinal forms, which may lead to diagnostic delay and exposure to serious complications. CD is a multidisciplinary health concern involving general medicine, pediatric, and adult gastroenterology, among other disciplines. Immunology and pathology laboratories have a fundamental role in diagnosing and monitoring CD. The diagnosis consists of serological testing based on IgA anti-transglutaminase (TG2) antibodies combined with IgA quantification to rule out IgA deficiency, a potential misleading factor of CD diagnosis. Positive TG2 serology should be corroborated by anti-endomysium antibody testing before considering an intestinal biopsy. Owing to multiple differential diagnoses, celiac disease cannot be confirmed based on serological positivity alone, nor on isolated villous atrophy. In children with classical signs or even when asymptomatic, with high levels of CD-linked markers and positive HLA DQ2 and/or DQ8 molecules, the current trend is to confirm the diagnosis on basis of the non-systematic use of the biopsy, which remains obligatory in adults. The main challenge in managing CD is the implementation and compliance with a gluten-free diet (GFD). This explains the key role of the dietitian and the active participation of patients and their families throughout the disease-management process. The presence of the gluten in several forms of medicine requires the sensitization of physicians when prescribing, and particularly when dispensing gluten-containing formulations by pharmacists. This underlines the importance of the contribution of the pharmacist in the care of patients with CD within the framework of close collaboration with physicians and nutritionists.

[Acute intestinal obstruction revealing enteropathy associated t-cell lymphoma, about a case]

Le lymphome T intestinal associé à une entéropathie ou Enteropathy associated T-cell lymphoma (EATL), est une complication rare de la maladie cœliaque (MC). Nous rapportons l'observation d'un lymphome T associée à une MC révélé par une occlusion intestinale aigue. Une patiente maghrébine de 38 ans, aux antécédents de stérilité et de douleurs abdominales chroniques, était admise en urgence pour occlusion intestinale aigue. L'intervention chirurgicale retrouvait une tumeur au dépend du grêle avec des adénopathies mésentériques. L'histologie et l'immunohistochimie de la pièce opératoire objectivait un lymphome T digestif CD3+ et le bilan immunologique de la maladie cœliaque était positif. Le diagnostic d'EATL était ainsi retenu. La patiente était mise sous chimiothérapie (CHOEP) et régime sans gluten avec une réponse complète au traitement. L'EATL est une complication rare de la MC qui peut être révélée par une occlusion intestinale. Son pronostic peut être amélioré par une prise en charge précoce associant chirurgie et chimiothérapie. Sa prévention passe par un diagnostic précoce de la MC et un régime sans gluten.