New treatment approach for eosinophilic chronic rhinosinusitis

New treatment approach for eosinophilic chronic rhinosinusitis

Reviewed by Kate Anderton, B.Sc. (Editor) Feb 6 2020 Eosinophilic chronic rhinosinusitis (ECRS) is a type of airway disease involving nasal inflammation. Many studies have attempted to understand the molecular-based pathogenesis of recurrent ECRS; none have provided a clear explanation, until now. In a new study published in The Journal of Allergy and Clinical Immunology , a team led by researchers from Osaka University investigated the activity of semaphorin protein, a cell-surface molecule that participates in nervous system signaling and immune responses. They found that semaphorin protein contributes to allergic reactions and development of nasal polyps in patients with ECRS. In ECRS, inflammation leads to development of nasal polyps containing eosinophils (a subset of white blood cells). Treatment options include sinus surgery and systemic glucocorticoids. However, the effectiveness of these treatments can be insufficient and multiple side effects can occur. Thus, targeted molecular therapies may provide novel treatment options for patients with ECRS without these drawbacks. Because semaphorin has been identified in inflamed airway tissues, it is an attractive candidate for use in such therapies. In this study, we found that serum levels of semaphorin proteins were elevated in patients with ECRS, and that these levels were positively associated with multiple measures of disease severity. We suspected that semaphorin protein played an important role in the pathogenesis of ECRS." Masayuki Nishide, corresponding author on the study Related Stories



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