Increased expression of periostin (POSTN) and thymic stromal lymphopoietin (TSLP) in chronic rhinosinusitis with polyps (CRSwNP)

Introduction POSTN and TSLP are increasingly secreted after activation of the nasal epithelium by allergens or toxins. TSLP can exist in two isoforms – short-form (sfTSLP) and long-form (lfTSLP). The aim of this study is to investigate the expression pattern of POSTN and TSLP in terms of type II inflammation of CRSwNP.