effects of asian dust particles on the early-stage antigen-induced immune response of asthma in nc/nga mice
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ID: 194360
2016
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Abstract
Asian dust (AD) can aggravate airway inflammation in asthma, but the association between AD and the development of asthma remains unclear. This study aimed to investigate the effects of AD on the early stage of antigen sensitization using a mouse model of asthma, as well as the role of leukotrienes (LTs) in antigen-induced airway inflammation potentiated by AD particles. NC/Nga mice were co-sensitized by intranasal instillation of AD particles and/or Dermatophagoides farinae (Df) for five consecutive days. Df-sensitized mice were stimulated with an intranasal Df challenge at seven days. Mice were treated with the type 1 cysteinyl LT (CysLT1) receptor antagonist orally 4 h before and 1 h after the allergen challenge. At 24 h post-challenge, the differential leukocyte count, inflammatory cytokines, and LTs in bronchoalveolar lavage fluid were assessed, and airway inflammation was evaluated histopathologically. AD augmented neutrophilic and eosinophilic airway inflammation with increased CysLTs and dihydroxy-LT in a mouse model of asthma. The CysLT1 receptor antagonist was shown to attenuate both neutrophilic and eosinophilic airway inflammation augmented by AD. Therefore, exposure to AD may be associated with the development of asthma and LTs may play important roles in airway inflammation augmented by AD.
| Reference Key |
kurai2016internationaleffects
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|---|---|
| Authors | ;Jun Kurai;Masanari Watanabe;Hiroyuki Sano;Degejirihu Hantan;Yuji Tohda;Eiji Shimizu |
| Journal | archives of biochemistry and biophysics |
| Year | 2016 |
| DOI |
10.3390/ijerph13111144
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| URL | |
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