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A Latex‐Induced Allergic Airway Inflammation Model in Mice
Author(s) -
Farzaneh Parvaneh,
Hassan Zuhair Mohammad,
Pourpak Zahra,
Hoseini Ahmad Zavaran,
Hogan Simon P.
Publication year - 2006
Publication title -
basic and clinical pharmacology and toxicology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.805
H-Index - 90
eISSN - 1742-7843
pISSN - 1742-7835
DOI - 10.1111/j.1742-7843.2006.pto_530.x
Subject(s) - bronchoalveolar lavage , eosinophil , immunology , medicine , inhalation , inflammation , immunoglobulin e , allergic inflammation , lung , allergy , eosinophilia , respiratory tract , respiratory system , asthma , antibody , anesthesia
Latex allergy is important due to serious health impacts and widespread use of its products. Latex allergic reactions can be induced in skin and mucosal surfaces including the respiratory tract. The development of murine models of allergic airway inflammation has provided a framework to dissect out the cellular and molecular mechanisms of allergic respiratory inflammation. In this study we have developed a new mouse model of latex allergic airway inflammation using aerosol inhalation. The allergic inflammatory responses were characterized in this model. Mice were injected intraperitoneally with 0, 10, 50, or 200 μg of latex extract and their serum anti‐latex IgE titers were determined. In the second stage, a standard protocol of inhalation was designed and three doses of latex extract solutions including 1%, 0.1%, and 0.01% were used to induce allergic airway inflammation. Bronchoalveolar lavage cytokines (IL‐5 and IL‐13) and serum anti‐latex IgE and IgG 1 titers were determined by ELISA. Eosinophil levels in lung, peripheral blood, bronchoalveolar lavage and bone marrow were also evaluated. Histological analysis of lung tissue was also performed after latex inhalation. The aerosol inhalation of 1% latex allergens solution and presensitization with 50 μg of latex in this study resulted in the development of allergic airway inflammation characterized by elevated allergen specific IgE and IgG 1 , peripheral blood, bronchoalveolar lavage and bone marrow eosinophilia. Histological analysis of the lung revealed an inflammatory response characterized by eosinophil accumulation. Elevated levels of Th2 cytokines IL‐5 and IL‐13 also were shown in bronchoalveolar lavage samples. These studies demonstrate that sensitization and subsequent aerosol inhalational challenge of latex allergen extract promotes allergic airway inflammation characterized by elevated IL‐5 and IL‐13 and eosinophils.