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MicroRNA let-7a up-regulates OPN expression in a mouse model of allergic rhinitis.

J Laryngol Otol. 2017 Nov;131(11):955-960. Epub 2017 Aug 15
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摘要


OBJECTIVE:To investigate the effect of microRNA let-7a on OPN expression in a mouse model of allergic rhinitis. METHODS:Thirty-two mature female C57BL/6 mice were randomly divided into four groups, with eight mice in each group: microRNA let-7a, microRNA control, OVA and phosphate-buffered saline groups. The microRNA let-7a, microRNA control and OVA groups were sensitised with OVA to establish a mouse model of allergic rhinitis. Nose-scratching events were counted. Nasal mucosa was used to evaluate histological changes of goblet cell hyperplasia. Interleukins 5 and 13 were detected. Interferon-γ levels in the nasal lavage fluid were assayed with enzyme-linked immunosorbent assay. OPN expression was estimated with polymerase chain reaction. RESULTS:Compared with microRNA control mice, microRNA let-7a treated mice had a significantly increased number of nose-scratching events, nasal mucosal eosinophilia and goblet cell hyperplasia (p 0.05). In addition, microRNA let-7a treated mice had significantly enhanced OPN expression in nasal mucosa (p < 0.05). CONCLUSION:MicroRNA let-7a can promote allergic rhinitis development partly by regulating OPN expression.

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