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- aggregation classification "A1".
- aggregation creator B383478.
- aggregation creator B383479.
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- aggregation creator person.
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- aggregation date "2010".
- aggregation format "application/pdf".
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- aggregation isPartOf urn:issn:0954-7894.
- aggregation language "eng".
- aggregation rights "I have transferred the copyright for this publication to the publisher".
- aggregation subject "Biology and Life Sciences".
- aggregation title "United airways: circulating Th2 effector cells in an allergic rhinitis model are responsible for promoting lower airways inflammation".
- aggregation abstract "Background : Allergic rhinitis (AR) and asthma often coexist and are referred to as 'united airways' disease. However, the molecular and cellular pathways that are crucially involved in the interaction between upper and lower airways remain to be identified. Objective : We sought to assess whether and how AR exacerbates lower airway inflammation upon allergen challenge in mice. Methods : We previously developed an intranasal ovalbumin (OVA)-driven AR model, characterized by nasal eosinophilic inflammation, enhanced serum levels of OVA-specific IgE and Th2 cytokine production in cervical lymph nodes. In OVA-sensitized mice with or without AR, a lower airway challenge was given, and after 24 h, lower airway inflammation was analysed. Results : We found that AR mice were more susceptible to eosinophilic inflammation following a lower airway OVA challenge than OVA-sensitized controls. AR mice manifested increased numbers of eosinophils in bronchoalveolar lavage fluid and increased inter-cellular adhesion molecule-1 (ICAM-1) expression on lung endothelium, when compared with OVA-sensitized controls. Depletion of T cells in OVA-challenged AR mice completely abrogated all hallmarks of lower airway inflammation, including enhanced IL-5 and tissue eosinophilia. Conversely, adoptive transfer of Th2 effector cells in naive animals induced lower airway eosinophilic inflammation after challenge with OVA. Blocking T cell recirculation during AR development by the spingosine-1 analogue FTY720 also prevented lower airway inflammation including ICAM-1 expression in AR mice upon a single lower airway challenge. Conclusion : Our mouse model of 'united airways' disease supports epidemiological and clinical data that AR has a significant impact on lower airway inflammation. Circulating Th2 effector cells are responsible for lung priming in AR mice, most likely through up-regulation of ICAM-1.".
- aggregation authorList BK693214.
- aggregation endPage "504".
- aggregation issue "3".
- aggregation startPage "494".
- aggregation volume "40".
- aggregation aggregates 836449.
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- aggregation similarTo j.1365-2222.2009.03417.x.
- aggregation similarTo LU-833714.