Arcila-Galvis, Juliana EstefaníaLoria Kohen, Viviana ConstanzaRamírez de Molina, AnaCarrillo de Santa Pau, EnriqueMarcos-Zambrano, Laura Judith2024-05-172024-05-172022-09-13Arcila-Galvis JE, Loria-Kohen V, Ramírez de Molina A, Carrillo de Santa Pau E, Marcos-Zambrano LJ. A comprehensive map of microbial biomarkers along the gastrointestinal tract for celiac disease patients. Front Microbiol. 2022 Sep 13;13:956119. doi: 10.3389/fmicb.2022.956119.1664-302X10.3389/fmicb.2022.956119https://hdl.handle.net/20.500.14352/104160Dysbiosis of the microbiome has been related to Celiac disease (CeD) progress, an autoimmune disease characterized by gluten intolerance developed in genetically susceptible individuals under certain environmental factors. The microbiome contributes to CeD pathophysiology, modulating the immune response by the action of short-chain fatty acids (SCFA), affecting gut barrier integrity allowing the entrance of gluten-derived proteins, and degrading immunogenic peptides of gluten through endoprolyl peptidase enzymes. Despite the evidence suggesting the implication of gut microbiome over CeD pathogenesis, there is no consensus about the specific microbial changes observed in this pathology. Here, we compiled the largest dataset of 16S prokaryotic ribosomal RNA gene high-throughput sequencing for consensus profiling. We present for the first time an integrative analysis of metataxonomic data from patients with CeD, including samples from different body sites (saliva, pharynx, duodenum, and stool). We found the presence of coordinated changes through the gastrointestinal tract (GIT) characterized by an increase in <jats:italic>Actinobacteria</jats:italic> species in the upper GIT (pharynx and duodenum) and an increase in <jats:italic>Proteobacteria</jats:italic> in the lower GIT (duodenum and stool), as well as site-specific changes evidencing a dysbiosis in patients with CeD’ microbiota. Moreover, we described the effect of adherence to a gluten-free diet (GFD) evidenced by an increase in beneficial bacteria and a decrease in some <jats:italic>Betaproteobacteriales</jats:italic> but not fully restoring CeD-related dysbiosis. Finally, we built a Random Forest model to classify patients based on the lower GIT composition achieving good performance.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/journal articlehttps://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2022.956119/fullopen access612.39MicrobiotaCeliac disease16S rRNA geneGluten free diet (FGD)MetataxonomyBiologíaMedicinaDietética y nutrición (Farmacia)2407 Biología Celular2410 Biología Humana2411 Fisiología Humana2414 Microbiología