論文

査読有り 筆頭著者 責任著者 国際誌
2018年

Increased Susceptibility to Allergic Asthma with the Impairment of Respiratory Tolerance Caused by Psychological Stress.

International archives of allergy and immunology
  • Tasuku Kawano
  • ,
  • Ryusuke Ouchi
  • ,
  • Takahiro Ishigaki
  • ,
  • Chiaki Masuda
  • ,
  • Tomomitsu Miyasaka
  • ,
  • Yuichi Ohkawara
  • ,
  • Nobuo Ohta
  • ,
  • Motoaki Takayanagi
  • ,
  • Tomoko Takahashi
  • ,
  • Isao Ohno

177
1
開始ページ
1
終了ページ
15
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1159/000488289
出版者・発行元
S. Karger {AG}

BACKGROUND: Bronchial asthma is characterized by type 2 T helper (Th2) cell inflammation, essentially due to a breakdown of immune tolerance to harmless environmental allergens. Etiologically, experiences of psychological stress can be associated with a heightened prevalence of asthma. However, the mechanisms underlying stress-related asthma development are unclear. In this study, we examined whether psychological stress increases susceptibility to allergic asthma by downregulating immune tolerance. METHODS: Female BALB/c mice were sensitized with ovalbumin/alum, followed by ovalbumin inhalation. Ovalbumin inhalation induced immune tolerance before sensitization occurred. Some mice were exposed to restraint stress during tolerance induction or sensitization. Asthma development was evaluated by airway responsiveness, inflammation, cytokine expression, and IgE synthesis. Sensitization was evaluated by measuring proliferation and cytokine production by splenocytes. The effects of stress exposure on the numbers and functions of dendritic cells and regulatory T (Treg) cells in bronchial lymph nodes and spleens were evaluated. To investigate the role of endogenous glucocorticoid in inhibiting immune tolerance after stress exposure, we examined the effects of (i) a glucocorticoid-receptor antagonist administered prior to stress exposure, and (ii) exogenous gluco-corticoid (instead of stress exposure). RESULTS: Asthmatic responses and Th2-biased sensitization, which were suppressed in tolerized mice, re-emerged in tolerized mice stressed during tolerance induction in association with decreased tolerogenic dendritic and Treg cell numbers. The effects of stress exposure on tolerized mice were abolished by administering a glucocorticoid-receptor antagonist and reproduced by administering exogenous glucocorticoid without stress. CONCLUSIONS: Our findings suggested that psychological stress can potentially increase allergic asthma susceptibility by inhibiting immune tolerance.

リンク情報
DOI
https://doi.org/10.1159/000488289
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/29874662
URL
http://orcid.org/0000-0001-6978-6361
ID情報
  • DOI : 10.1159/000488289
  • ISSN : 1018-2438
  • ORCIDのPut Code : 45475020
  • PubMed ID : 29874662

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