Activation of Eosinophils and Mast Cells in Functional Dyspepsia: an Ultrastructural Evaluation.

ABSTRACT: We recently identified mucosal mast cell and eosinophil hyperplasia in association with a duodenal impaired barrier function in functional dyspepsia (FD). We aimed to further describe the implication of these immune cells by assessing their activation state at the ultrastructural level and by evaluating the association between impaired epithelial integrity and immune activation. Duodenal biopsies were obtained from 24 FD patients and 37 healthy controls. The ultrastructure of mast cells and eosinophils was analyzed by transmission electron microscopy. Transepithelial electrical resistance and paracellular permeability were measured to evaluate epithelial barrier function. The type of degranulation in eosinophils and mast cells was piecemeal. Eosinophils displayed higher degree of degranula

SUBMITTER: Vanheel H 

PROVIDER: S-EPMC5876347 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature