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Eosinophilic Chronic Rhinosinusitis and Pathogenic Role of Protease

Overview
Journal Int J Mol Sci
Publisher MDPI
Date 2023 Dec 23
PMID 38139201
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Abstract

Chronic rhinosinusitis (CRS) is an inflammation of the nasal and paranasal sinus mucosa, and eosinophilic CRS (eCRS) is a subtype characterized by significant eosinophil infiltration and immune response by T-helper-2 cells. The pathogenesis of eCRS is heterogeneous and involves various environmental and host factors. Proteases from external sources, such as mites, fungi, and bacteria, have been implicated in inducing type 2 inflammatory reactions. The balance between these proteases and endogenous protease inhibitors (EPIs) is considered important, and their imbalance can potentially lead to type 2 inflammatory reactions, such as eCRS. In this review, we discuss various mechanisms by which exogenous proteases influence eCRS and highlight the emerging role of endogenous protease inhibitors in eCRS pathogenesis.

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Li L, Liu Z, Zhang C, Long Y, Yang T Immun Inflamm Dis. 2024; 12(7):e1337.

PMID: 39023421 PMC: 11256880. DOI: 10.1002/iid3.1337.

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