| Autor: |
Kenjiro Shima, Toshiyuki Koya, Keisuke Tsukioka, Takuro Sakagami, Takashi Hasegawa, Chiharu Fukano, Katsuyo Ohashi-Doi, Satoshi Watanabe, Eiichi Suzuki, Toshiaki Kikuchi |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Allergology International, Vol 66, Iss 1, Pp 89-96 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
1323-8930 |
| DOI: |
10.1016/j.alit.2016.05.012 |
| Popis: |
Background: Sublingual immunotherapy (SLIT) has received attention as a method for allergen immunotherapy. However, the mechanism of SLIT has not yet been fully investigated. Therefore, we evaluated the effects of SLIT in a murine asthma model, sensitized by intranasal administration of house dust mite (HDM) extracts. Methods: Female BALB/c mice were intranasally exposed to HDM for either 3 or 5 weeks (5 consecutive days per week). Mice were administered either low-dose (0.5 mg/day) or high-dose (5 mg/day) sublingual HDM extracts for 2 weeks, followed by an additional week of intranasal exposure. Airway hyperresponsiveness (AHR), bronchoalveolar lavage fluid (BALF) cell count, cytokine levels in the BALF and lymph node cell culture supernatants, and allergen-specific antibodies were measured. Lung histology was also investigated. Results: In mice sensitized for 5 weeks, high-dose SLIT ameliorated AHR, airway eosinophilia and goblet cell metaplasia. In mice sensitized for 3 weeks, even low dose SLIT ameliorated AHR and airway eosinophilia. Th2 cytokine levels in culture supernatants of submandibular lymph node cells in high-dose SLIT mice decreased, whereas IL-10 levels increased. Total IgA in BALF increased in mice sensitized for 3 or 5 weeks, and high-dose SLIT also increased allergen-specific IgG2a in mice sensitized for 5 weeks. Conclusions: These data suggest that earlier induction of SLIT in HDM-sensitized mice provides superior suppression of AHR and goblet cell metaplasia. The modulation of allergen specific IgG2a and local IgA might play a role in the amelioration of AHR and airway inflammation. |
| Databáze: |
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| Externí odkaz: |
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