Exposure to intermittent hypoxia inhibits allergic airway inflammation in a murine model of asthma
| Autor: | Shin Ohta, Mayumi Muramoto, Shintaro Suzuki, Takuya Yokoe, Kuniaki Hirai, Yoshio Watanabe, Tetsuya Homma, Yoshito Miyata, Munehiro Yamaguchi, Megumi Jinno, Akihiko Tanaka, Hironori Sagara |
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| Rok vydání: | 2019 |
| Předmět: |
03 medical and health sciences
Mice 0302 clinical medicine Metaplasia medicine Respiratory Hypersensitivity Animals Hypoxia Asthma Inflammation Goblet cell Mice Inbred BALB C Sleep Apnea Obstructive biology business.industry Interleukin Intermittent hypoxia respiratory system Eosinophil medicine.disease respiratory tract diseases Obstructive sleep apnea Ovalbumin Disease Models Animal medicine.anatomical_structure 030228 respiratory system Otorhinolaryngology Immunology biology.protein Female Neurology (clinical) medicine.symptom business 030217 neurology & neurosurgery |
| Zdroj: | Sleepbreathing = SchlafAtmung. 24(2) |
| ISSN: | 1522-1709 |
| Popis: | Obesity increases the severity of asthma, and patients with severe asthma are often complicated with obstructive sleep apnea syndrome (OSAS), a concomitant disease of obesity. We investigated whether intermittent hypoxia (IH), which is a physiological feature of OSAS, modifies allergic airway inflammation in a murine model of asthma. Balb/c mice were sensitized by ovalbumin (OVA) intraperitoneally twice (days 1 and 14) and challenged with intranasal OVA three times (days 21, 22, and 23). The mice were exposed to IH either from days 1 to 24 (long exposure) or only from days 21 to 24 (short exposure). The impact of IH exposure to allergic airway inflammation was investigated using these mice models by histologic, morphometric, and molecular techniques. Additionally, the airway responsiveness to acetylcholine was also assessed. OVA-sensitized and OVA-challenged mice exposed to room air (RA) showed increased total cell and eosinophil numbers in the BALF. The levels of interleukin (IL)-5 and IL-13 in the BALF also increased and goblet cell metaplasia was induced. In contrast, both long and short exposure to IH inhibited the increased total cell and eosinophil numbers. The levels of IL-5 and IL-13 in the BALF also decreased on exposure to IH. Moreover, the goblet cell hyperplasia and airway hyperresponsiveness were significantly reduced in mice exposed to IH compared to those exposed to RA. These results suggest that IH may not deteriorate the asthmatic condition in a murine model of asthma. |
| Databáze: | OpenAIRE |
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