期刊
INTERNATIONAL FORUM OF ALLERGY & RHINOLOGY
卷 7, 期 2, 页码 177-184出版社
WILEY
DOI: 10.1002/alr.21865
关键词
rhinosinusitis; anti-inflammatory therapeutic; immune response; sulfated glycosaminoglycan; cathelicidin
资金
- University of Utah Program in Personalized Health
- NIH (National Center for Advancing Translational Sciences [NCATS]) [KL2TR001065]
- National Institute of Allergy and Infectious Diseases [NIAID] [1R43AI126987]
BackgroundGlycosaminoglycans (GAGs) are polysaccharides that are distributed on respiratory epithelial cells, endothelial cells, and submucosal glands. Uniquely positioned, certain GAGs exhibit anti-inflammatory properties in respiratory diseases and serve important roles in repairing mucosal surfaces and modulating mucociliary clearance. We hypothesized that topical administration of a synthetic GAG (GM-0111) would prevent sinonasal inflammation in a mouse model of rhinosinusitis (RS). MethodsTo test our hypothesis, C57BL/6 mice were intranasally administered fluorescent GM-0111, and sinonasal tissues were examined for coating and penetration ability. To test therapeutic feasibility, mice (n = 6) were given GM-0111 or hyaluronic acid (HA; 800 g dose) prior to inducing RS with inflammatory molecule LL-37 (115 g dose). After 24 hours, sinonasal tissues were harvested for histological and biochemical analysis of inflammatory markers (inflammatory cell infiltration, lamina propria [LP] thickening, and neutrophil enzyme myeloperoxidase [MPO]) and cell death. ResultsGM-0111 was observed within sinonasal tissues 1 hour and 24 hours after intranasal administration, indicating rapid and effective coating and penetration. GM-0111 prevented sinonasal tissues from developing inflammatory changes, with significant reductions in mast cell infiltration (p < 0.05), LP thickening (p < 0.001), and MPO levels (p < 0.01) when compared to tissues treated with LL-37 and those pretreated with HA. GM-0111 reduced cell death within sinonasal tissues in contrast to LL-37-treated tissues. ConclusionWe report a new synthetic GAG (GM-0111) that uniformly coats and penetrates into the sinonasal mucosa to prevent sinonasal inflammation and cell death in a mouse model of RS.
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