Abstract | BACKGROUND: Aspergillus fumigatus and Alternaria alternata are ubiquitous environmental fungal allergens that can exacerbate airway inflammation and contribute to the disease process in patients with chronic rhinosinusitis (CRS). These antigens have been shown to induce human sinonasal epithelial cells (HSNECs) to promote a proinflammatory response, but what is unclear is a means by which to reduce these effects. Inhaled pathogens can induce HSNECs to produce reactive oxygen species (ROS) that trigger cytokine production. OBJECTIVE: METHODS: Sinus tissue explants were collected at the time of surgery from control patients (n = 7) and patients with CRS with nasal polyps (CRSwNP) (n = 9). HSNECs were cultured from the explants and treated with Aspergillus, Alternaria, and SOD for 24 hours. Cell supernatants and lysates were collected, and IL-6 and IL-8 concentrations were measured using enzyme-linked immunosorbent assay. RESULTS: In control and CRSwNP HSNECs, Aspergillus and Alternaria both increased cytokine production (p < 0.05), as measured by IL-6 and IL-8 concentration. SOD treatment reduced the inflammatory response to fungal antigen exposure from CRSwNP HSNECs but not control HSNECs. In CRSwNP patients, SOD significantly decreased IL-6 and IL-8 production after Alternaria exposure and IL-8 after Aspergillus exposure (p < 0.05). CONCLUSIONS: When HSNECs from CRSwNP patients are treated with SOD concurrently with Aspergillus or Alternaria, SOD treatment decreases the fungal antigen-induced inflammatory response. The ability to attenuate inflammation induced by common fungal allergens with SOD treatment could provide a novel therapeutic or preventative approach for patients with CRS or other allergic inflammatory airway diseases.
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Authors | Lauren A Lawrence, Jennifer K Mulligan, Catherine Roach, Whitney N Pasquini, Zachary M Soler, Sarfaraz M Banglawala, Tom T Karnezis, David A Gudis, Rodney J Schlosser |
Journal | American journal of rhinology & allergy
(Am J Rhinol Allergy)
2015 Mar-Apr
Vol. 29
Issue 2
Pg. 89-93
ISSN: 1945-8932 [Electronic] United States |
PMID | 25785747
(Publication Type: Journal Article, Research Support, U.S. Gov't, Non-P.H.S.)
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Chemical References |
- Antigens, Fungal
- Interleukin-6
- Interleukin-8
- Superoxide Dismutase
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Topics |
- Alternaria
(immunology)
- Antigens, Fungal
(immunology)
- Aspergillus fumigatus
(immunology)
- Cells, Cultured
- Chronic Disease
- Epithelial Cells
(drug effects, immunology, microbiology)
- Humans
- Interleukin-6
(metabolism)
- Interleukin-8
(metabolism)
- Nasal Polyps
(surgery)
- Paranasal Sinuses
(pathology, surgery)
- Rhinitis
(surgery)
- Sinusitis
(surgery)
- Superoxide Dismutase
(pharmacology)
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