기도 알레르기 생쥐모델에서의 IL-18 발현에 대한 스테로이드의 효과 = Effects of Corticosteroid on Expression of IL-18 in the Airway Mucosa of Allergic Rhinitis Mouse Model

다국어 초록 (Multilingual Abstract)

Background：This study aimed to investigate the release and response of IL-18 to steroid treatment in the allergic rhinitis
(AR) mouse model. Materials and Methods：BALB/c mice were sensitized systematically using an intraperitoneal ovalbumin
(OVA) injection and locally by OVA inhalation. The steroid treatment group had an intraperitoneal dexamethasone
injection. Symptom scores, eosinophil counts in nasal septal mucosa, and IL-18 concentrations in nasal and lung lavage fluid
were analyzed. Results：The symptom scores and eosinophil counts of the negative control and steroid treatment groups
were significantly lower than those of the positive control group (p<.01). Meanwhile IL-18 concentrations of nasal lavage
fluid of the three groups were not significantly different (56.68±9.57, 63.39±8.93, and 64.47±6.83 pg/mL, repectively).
IL-18 concentration of lung lavage fluid was significantly different between the positive control and steroid treatment groups
(430.75±154.54 and 69.94±14.26pg/mL respectively, p=.028). Conclusion：In this study, IL-18 concentration increased
not in the nasal lavage fluid but in the lung lavage fluid in AR mouse model. The increased IL-18 concentration decreased
after the steroid therapy. This result suggests that the role of IL-18 in the pathogenesis of AR may be different from that of asthma.