Year of publication:
Journal title abbreviated:
ADV EXP MED BIOL
Journal title long:
Advances in experimental medicine and biology
Activated peripheral T cells (APT) of patients with Crohn''s disease (CD) have been analysed for the expression of IgA-Fc receptors and for competence of IgA regulation. It was found that within the subset of APT an increased number of cells express binding sites for IgA (IgA-Fc), that was not found in other diseases with elevated numbers of APT. Moreover the number of IgA-Fc receptor expressing T cells was found to be increased in the inflamed mucosa too. Cocultures with autologous B cells revealed that isolated IgA-Fc receptor bearing T cells of patients with CD suppress IgA secretion. These data support the hypothesis that APT are involved in the immunopathogenesis of CD.