Helminth infection modulates the development of allergen-induced airway inflammation
| Autor: | Yvonne Ritze, Ursula Tatsch, Claudia Trujillo, Klaus J. Erb, Susanne M. Grunewald, Gisela Wohlleben, Justus Müller |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Eotaxin
CD4-Positive T-Lymphocytes Allergy Respiratory System Cell Count Immunoglobulin E Mice Immunology and Allergy Eosinophilia Nippostrongylus brasiliensis Cells Cultured Mice Knockout Mice Inbred BALB C medicine.diagnostic_test biology Vaccination General Medicine respiratory system Interleukin-10 Chemokines CC Nippostrongylus medicine.symptom Helminthiasis Animal Bronchoalveolar Lavage Fluid Chemokine CCL11 Ovalbumin Immunology Helminthiasis Bronchial Provocation Tests Interferon-gamma Th2 Cells parasitic diseases Macrophages Alveolar medicine Respiratory Hypersensitivity Animals Anaphylaxis Skin Tests Inflammation Interleukins Allergens medicine.disease biology.organism_classification respiratory tract diseases Eosinophils Mice Inbred C57BL Bronchoalveolar lavage Immunoglobulin G biology.protein Lymph Nodes Spleen |
| Zdroj: | International immunology. 16(4) |
| ISSN: | 0953-8178 |
| Popis: | It has been proposed that infections with helminths can protect from the development of allergic diseases. However, epidemiological and experimental studies have yielded conflicting results. Therefore we investigated if an infection with Nippostrongylus brasiliensis influenced the development of allergen-induced Th2 cell responses in mice. We found a decrease in allergen-induced airway eosinophilia and Eotaxin levels in the airways when mice were infected with the helminths 8 weeks, and especially 4 weeks, but not 1 or 2 weeks before ovalbumin (OVA)-airway challenge. While OVA-specific IgG1 and IgE serum levels and cutaneous hypersensitivity reactions were not reduced by the helminth infection, there was a reduction in OVA-specific IgG1 and IgE levels in bronchoalveolar lavage fluid of mice. Suppression of allergen-induced airway eosinophilia and reduction of Eotaxin production was not observed in IL-10 deficient mice. In addition, we found that helminth-induced airway eosinophilia and Eotaxin production was strongly increased in IL-10 deficient mice infected with the helminths in comparison to control mice. Taken together, these results show that infection with N. brasiliensis suppresses the development of allergen-induced airway eosinophilia and that this effect may be mediated by IL-10. Our results support the view that helminth infections can contribute to the suppression of allergies in humans. |
| Databáze: | OpenAIRE |
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