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Abstract Title:

The effect of nano-silver on allergic rhinitis model in mice.

Abstract Source:

Clin Exp Otorhinolaryngol. 2012 Dec ;5(4):222-7. Epub 2012 Nov 13. PMID: 23205228

Abstract Author(s):

Seung-Heon Shin, Mi-Kyung Ye

Article Affiliation:

Department of Otorhinolaryngology, Catholic University of Daegu School of Medicine, Daegu, Korea.

Abstract:

OBJECTIVES: Silver has long been known as a strong antimicrobial and disinfectant. Several types of nano-silver coated products have been developed. However, the antimicrobial and disinfectant characteristics of nano-silver have not been well studied. The aim of this study was to investigate the effect of nano-silver on allergic inflammation in a mouse model.

METHODS: Female BALB/C mice were sensitized by intraperitoneal injection of ovalbumin (OVA) and aluminium hydroxide on days 0, 7, 14, and 21. Mice were challenged with intranasal instillation of OVA. Nano-silver was also administered nasally prior to intranasal instillation of OVA. Severity of allergic rhinitis was assessed according to nasal symptoms, serum OVA-specific IgE level, interleukin (IL)-4, IL-10, and interferon (INF)-γ levels in nasal lavage fluid. Hematoxylin-eosin stain and periodic acid-Schiff stain were performed for evaluation of histological change.

RESULTS: Nano-silver attenuated manifestation of nasal symptoms in sensitized mice and inhibited production of OVA-specific IgE, IL-4, and IL-10, however, it had no effect on INF-γ level. In addition, the degree of inflammatory cell infiltration and goblet cell hyperplasia was attenuated by nano-silver.

CONCLUSION: These results suggest that nano-silver may effectively reduce allergic inflammation in a mouse model of allergic rhinitis. Through its properties as an anti-inflammatory agent, nano-silver may be a useful therapeutic strategy.

Study Type : Animal Study

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