Crossing the boundaries: IL-23 and its role in linking inflammation of the skin, gut and joints
RHEUMATOLOGY(2021)
Abstract
Several lines of evidence point towards the central role of IL-23 as a crucial inflammatory mediator in the pathogenesis of SpA-a group of inflammatory arthritic diseases whose symptoms span the skin, gastrointestinal tract and joints. While therapeutic blockade of IL-23 proved successful in the treatment of IBD, psoriatic skin disease and peripheral SpA, it failed in patients suffering from SpA with predominantly axial involvement. Here we review state-of-the-art discoveries on IL-23 signalling pathways across target tissues involved in SpA. We discuss the discrepancies in resident IL-23-responding cells and their downstream activities across skin, gut and joint that shape the unique immunological landscape of SpA.
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Key words
interleukin 23, spondyloarthritis, psoriasis, inflammatory bowel disease
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