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- W2801858871 abstract "In this study, we found Cystatin SN (CST1), a type 2 cystatin subfamily member, to be highly expressed in nasal polyps from patients with intractable chronic rhinosinusitis (CRS) with nasal polyps, using a whole-transcript analysis with next-generation sequencing. Eosinophilic CRS (ECRS) involves nasal polyps that are refractory and recur immediately after endoscopic sinus surgery. We hypothesized that CST1 may contribute to the pathogenesis of ECRS. We examined the expression of CST1 in nasal polyps from patients with ECRS by assessing mRNA expression levels using real-time PCR and immunohistochemistry. CST1 showed significantly greater expression in the epithelial cells of nasal polyps from patients with ECRS than in those from patients who did not have ECRS (non-ECRS). In particular, CST1 showed very strong expression in patients with severe ECRS. The expression of CST1 may be correlated with the recurrent and refractory nature of ECRS. We examined the function of CST1 using nasal epithelial cells and nasal fibroblasts. Stimulation by a combination of IL-4 plus double-stranded RNA plus CST1 significantly elevated mRNA expression levels and protein levels of TSLP in nasal epithelial cells. Stimulation by TSLP or IL-33 significantly elevated mRNA expression levels of CST1 in nasal epithelial cells. Stimulation of CST1 significantly elevated mRNA expression levels of CCL11 and POSTN in nasal fibroblasts. CST1 could amplify eosinophilic infiltration and T-helper cell type 2 inflammation by interacting with epithelial-derived cytokines and fibroblasts on nasal polyps. CST1 may be involved in the pathogenesis of ECRS, and may contribute to the severity and recurrence of CRS with nasal polyps after endoscopic sinus surgery." @default.
- W2801858871 created "2018-05-17" @default.
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- W2801858871 date "2018-10-01" @default.
- W2801858871 modified "2023-10-18" @default.
- W2801858871 title "Expression and Functional Analysis of CST1 in Intractable Nasal Polyps" @default.
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- W2801858871 doi "https://doi.org/10.1165/rcmb.2017-0325oc" @default.
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