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Volume 28, Issue 1, March 2017

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Mediterr J Rheumatol 2017; 28(1): 69-71
Is there a link between IL-23/IL-17 and developmental pathways such as the Wnt and Hedgehog pathway?
Authors Information

University Department of Internal Medicine, Rheumatology Department, Rheumatology Research Laboratory, Medical University of Patras, Greece

Abstract
Recent experimental evidence suggests that IL-23 may induce spondyloarthropathy by acting on entheseal resident “innate-like” T cells. These cells express IL-23R and respond to IL-23 by secreting inflammatory cytokines such as IL-6 and IL-17 as well as IL-22 which acts on osteoblasts and regulates bone remodeling. Moreover, a large amount of evidence indicates that new bone formation in the form of osteophytes is mainly driven by reactivation of developmental pathways such as the Wnt and the Hedgehog pathway. We hypothesize that IL-23/IL-17 may mediate bone remodeling by affecting the expression of developmental pathways.