Involvement of Th2 (interleukin-4) and Tumor necrosis factor-alpha in bowel disease pathogenesis through CD23/ no pathway: immunomodulatory effect of retinoic acid

Background Inflammatory bowel diseases (IBD) are chronic inflammatory diseases of the gastrointestinal tract, which clinically present as one of two disorders, Crohn’s disease (CD) and ulcerative colitis (UC). The CD23 is a multifunctional molecule expressed on various cells. It is know as the low-affinity receptor for the Fc portion of IgE. It expression at the cell surface of phagocytic cells has been associated with the development of many inflammatory processes. The aim of this work was to study the involvement of Th2 (IL-4) and TNF-a in bowel disease pathogenesis through the CD23/NO Pathway in Algerian patients with IBD.