Evaluation of biomarkers of intestinal permeability and inflammation in food allergies

The study revealed the signs of increased intestinal permeability, eosinophilic inflammation, and impaired mucosal immunity in children with AtD + FA. Patients with moderate disease severity showed increased intestinal barrier permeability, as evidenced by high levels of zonulin in coprofiltrates, as well as activation of eosinophilic inflammation, as indicated by elevated levels of eosinophilic neurotoxin and cationic protein. In addition, a decrease in mucosal immunity was detected, as evidenced by low values of secretory IgA, which indicates a disruption of the barrier function of the gastrointestinal mucosa. These findings suggest an important role of intestinal permeability and eosinophilic inflammation in the pathogenesis of moderate forms of AtD + FA, which may have significant implications for the development of new therapeutic approaches.