A murine model of allergic rhinitis: Studies on the role of IgE in pathogenesis and analysis of the eosinophil influx elicited by allergen and eotaxin

被引:69
作者
van de Rijn, M
Mehlhop, PD
Judkins, A
Rothenberg, ME
Luster, AD
Oettgen, HC
机构
[1] Harvard Univ, Childrens Hosp, Sch Med, Div Immunol, Boston, MA 02115 USA
[2] Univ Penn, Med Syst, Dept Pathol & Lab Med, Philadelphia, PA 19104 USA
[3] Childrens Hosp, Med Ctr, Div Pulm Med Allergy & Clin Immunol, Cincinnati, OH 45229 USA
[4] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Dept Med,Infect Dis Unit, Boston, MA USA
关键词
allergic rhinitis; IgE; IL-5; eotaxin; mouse; model;
D O I
10.1016/S0091-6749(98)70056-9
中图分类号
R392 [医学免疫学];
学科分类号
100102 ;
摘要
Background: Allergic rhinitis is a prevalent disease with significant morbidity, Studies of its pathophysiology in human subjects have been limited. Nasal biopsy specimens are difficult to obtain, and nasal secretions incompletely reflect the cellular and molecular events in the mucosa, IgE-mediated mast cell activation and the elaboration of factors promoting eosinophil development and chemotaxis are likely to participate in pathogenesis. Objectives: We sought to develop a murine model of allergic rhinitis, to use it to assess the role of IgE in pathogenesis, and to study the effects of IL-5 and eotasin in the nasal mucosa, Methods: A protein extract of Aspergillus fumigatus (Af) was instilled intranasally in mice. Histologic changes were examined in wild-type and IgE-deficient (IgE(-/-)) animals. The effect of eotasin administration was assessed in wild-type and IL-5 transgenic mice. Results: Af-treated mice developed a nasal mucosal eosinophil influx comparable to that described for humans, This histology was distinct from that observed in a murine model Af-induced asthma, The pathology appeared over a time course similar to that reported for human subjects. There was no difference in the intensity of the mucosal inflammatory infiltrate of rif-treated IgE(-/-) mice compared with wild-type mice. Eotaxin mas able to recruit eosinophils to the mucosa but only in IL-5 transgenic animals, Conclusion: We describe a murine model for allergic rhinitis with an eosinophilic infiltrate comparable to that found in human disease and have demonstrated that rhinitis can arise in the absence of IgE, We have shown that the eosinophil influx can be induced by eotaxin in the presence of IL-5.
引用
收藏
页码:65 / 74
页数:10
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