Saccharomyces boulardii activates AhR signaling in a preclinical celiac disease model
S. boulardii CNCM I-745 activated the aryl hydrocarbon receptor (AhR) pathway in HLA-DQ8 gluten-sensitized mice and enhanced indole-producing capacity of celiac patients' microbiota ex vivo.
Kontext
Non-responsive celiac disease is associated with impaired tryptophan metabolism and reduced intestinal AhR signaling. No probiotic strain currently carries a clinical recommendation targeting these mechanisms.
Was die Studie zeigte
In HLA-DQ8 mice, S. boulardii reduced gluten-induced immunopathology through AhR pathway activation. The effect depended on the presence of duodenal indole-producing commensals such as Lactobacillus reuteri, indicating microbiota-dependent synergism. No human clinical efficacy data are reported.
Wie es durchgeführt wurde
Mouse model of gluten sensitization using HLA-DQ8-expressing animals, combined with ex vivo experiments using duodenal microbiota from celiac patients; sample sizes and protocol duration are not specified in the abstract.
Einschränkungen
Evidence is strictly preclinical (animal model and ex vivo assays); no RCT in humans; dependence on duodenal L. reuteri limits generalizability to patients with severe dysbiosis. Analysis is based solely on the abstract without access to the full text.
In der klinischen Praxis
No clinical practice change is supported by these data. The authors frame the findings as grounds for clinical testing, not as evidence of therapeutic benefit.