Patients with allergic rhinitis and allergic asthma share the same pattern of eosinophil and neutrophil degranulation after allergen challenge
<p>Abstract</p> <p>Background</p> <p>Patients with allergic rhinitis and allergic asthma demonstrate comparable local and systemic eosinophil inflammation, and yet they present with different clinical pictures. Less is even known about the contribution of neutrophil inf...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2011-01-01
|
| Series: | Clinical and Molecular Allergy |
| Online Access: | http://www.clinicalmolecularallergy.com/content/9/1/3 |
| _version_ | 1818490731576164352 |
|---|---|
| author | Lampinen Maria Stolt Ingrid Kämpe Mary Janson Christer Stålenheim Gunnemar Carlson Marie |
| author_facet | Lampinen Maria Stolt Ingrid Kämpe Mary Janson Christer Stålenheim Gunnemar Carlson Marie |
| author_sort | Lampinen Maria |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Patients with allergic rhinitis and allergic asthma demonstrate comparable local and systemic eosinophil inflammation, and yet they present with different clinical pictures. Less is even known about the contribution of neutrophil inflammation in allergic diseases. The aim of the study was to examine the propensity and selectivity of granule release from primed systemic eosinophils and neutrophils in allergic rhinitis and allergic asthma after seasonal and experimental allergen exposure. We hypothesize that the dissimilar clinical manifestations are due to diverse eosinophil and neutrophil degranulation.</p> <p>Methods</p> <p>Nine birch pollen allergic patients with rhinitis, eight with asthma and four controls were studied during pollen season and after nasal and bronchial allergen challenge. Eosinophils and neutrophils were incubated in vitro with assay buffer and opsonized Sephadex particles for spontaneous and C3b-induced granule protein release. The released amount of eosinophil cationic protein (ECP), eosinophil peroxidase (EPO) and myeloperoxidase (MPO) was measured by specific radioimmunoassay.</p> <p>Results</p> <p>C3b-induced degranulation resulted in increased release of ECP and MPO from primed blood eosinophils and neutrophils in both allergic rhinitis and allergic asthma during pollen season and after both nasal and bronchial challenge (p-values 0.008 to 0.043). After bronchial challenge, the ECP release was significantly higher in the rhinitic group compared to the asthmatic group [19.8 vs. 13.2%, (p = 0.010)]. The propensity for EPO release was weak in all challenge models but followed the same pattern in both allergic groups.</p> <p>Conclusions</p> <p>Systemically activated eosinophils and neutrophils have similar patterns of degranulation after allergen exposure in allergic rhinitis and allergic asthma. The released amount of ECP, EPO and MPO was similar in all allergen challenge models in both allergic groups. Our results indicate that other mechanisms than the magnitude of eosinophil and neutrophil inflammation or the degranulation pattern of the inflammatory cells determines whether or not an allergic patient develops asthma.</p> |
| first_indexed | 2024-12-10T17:20:51Z |
| format | Article |
| id | doaj.art-e66698a39e1d4f22ac2faec35f2b5e68 |
| institution | Directory Open Access Journal |
| issn | 1476-7961 |
| language | English |
| last_indexed | 2024-12-10T17:20:51Z |
| publishDate | 2011-01-01 |
| publisher | BMC |
| record_format | Article |
| series | Clinical and Molecular Allergy |
| spelling | doaj.art-e66698a39e1d4f22ac2faec35f2b5e682022-12-22T01:39:58ZengBMCClinical and Molecular Allergy1476-79612011-01-0191310.1186/1476-7961-9-3Patients with allergic rhinitis and allergic asthma share the same pattern of eosinophil and neutrophil degranulation after allergen challengeLampinen MariaStolt IngridKämpe MaryJanson ChristerStålenheim GunnemarCarlson Marie<p>Abstract</p> <p>Background</p> <p>Patients with allergic rhinitis and allergic asthma demonstrate comparable local and systemic eosinophil inflammation, and yet they present with different clinical pictures. Less is even known about the contribution of neutrophil inflammation in allergic diseases. The aim of the study was to examine the propensity and selectivity of granule release from primed systemic eosinophils and neutrophils in allergic rhinitis and allergic asthma after seasonal and experimental allergen exposure. We hypothesize that the dissimilar clinical manifestations are due to diverse eosinophil and neutrophil degranulation.</p> <p>Methods</p> <p>Nine birch pollen allergic patients with rhinitis, eight with asthma and four controls were studied during pollen season and after nasal and bronchial allergen challenge. Eosinophils and neutrophils were incubated in vitro with assay buffer and opsonized Sephadex particles for spontaneous and C3b-induced granule protein release. The released amount of eosinophil cationic protein (ECP), eosinophil peroxidase (EPO) and myeloperoxidase (MPO) was measured by specific radioimmunoassay.</p> <p>Results</p> <p>C3b-induced degranulation resulted in increased release of ECP and MPO from primed blood eosinophils and neutrophils in both allergic rhinitis and allergic asthma during pollen season and after both nasal and bronchial challenge (p-values 0.008 to 0.043). After bronchial challenge, the ECP release was significantly higher in the rhinitic group compared to the asthmatic group [19.8 vs. 13.2%, (p = 0.010)]. The propensity for EPO release was weak in all challenge models but followed the same pattern in both allergic groups.</p> <p>Conclusions</p> <p>Systemically activated eosinophils and neutrophils have similar patterns of degranulation after allergen exposure in allergic rhinitis and allergic asthma. The released amount of ECP, EPO and MPO was similar in all allergen challenge models in both allergic groups. Our results indicate that other mechanisms than the magnitude of eosinophil and neutrophil inflammation or the degranulation pattern of the inflammatory cells determines whether or not an allergic patient develops asthma.</p>http://www.clinicalmolecularallergy.com/content/9/1/3 |
| spellingShingle | Lampinen Maria Stolt Ingrid Kämpe Mary Janson Christer Stålenheim Gunnemar Carlson Marie Patients with allergic rhinitis and allergic asthma share the same pattern of eosinophil and neutrophil degranulation after allergen challenge Clinical and Molecular Allergy |
| title | Patients with allergic rhinitis and allergic asthma share the same pattern of eosinophil and neutrophil degranulation after allergen challenge |
| title_full | Patients with allergic rhinitis and allergic asthma share the same pattern of eosinophil and neutrophil degranulation after allergen challenge |
| title_fullStr | Patients with allergic rhinitis and allergic asthma share the same pattern of eosinophil and neutrophil degranulation after allergen challenge |
| title_full_unstemmed | Patients with allergic rhinitis and allergic asthma share the same pattern of eosinophil and neutrophil degranulation after allergen challenge |
| title_short | Patients with allergic rhinitis and allergic asthma share the same pattern of eosinophil and neutrophil degranulation after allergen challenge |
| title_sort | patients with allergic rhinitis and allergic asthma share the same pattern of eosinophil and neutrophil degranulation after allergen challenge |
| url | http://www.clinicalmolecularallergy.com/content/9/1/3 |
| work_keys_str_mv | AT lampinenmaria patientswithallergicrhinitisandallergicasthmasharethesamepatternofeosinophilandneutrophildegranulationafterallergenchallenge AT stoltingrid patientswithallergicrhinitisandallergicasthmasharethesamepatternofeosinophilandneutrophildegranulationafterallergenchallenge AT kampemary patientswithallergicrhinitisandallergicasthmasharethesamepatternofeosinophilandneutrophildegranulationafterallergenchallenge AT jansonchrister patientswithallergicrhinitisandallergicasthmasharethesamepatternofeosinophilandneutrophildegranulationafterallergenchallenge AT stalenheimgunnemar patientswithallergicrhinitisandallergicasthmasharethesamepatternofeosinophilandneutrophildegranulationafterallergenchallenge AT carlsonmarie patientswithallergicrhinitisandallergicasthmasharethesamepatternofeosinophilandneutrophildegranulationafterallergenchallenge |