TY - JOUR
T1 - Immunologic response to fungus is not universally associated with rhinosinusitis
AU - Orlandi, Richard R.
AU - Marple, Bradley F.
AU - Georgelas, Ann
AU - Durtschi, Drew
AU - Barr, Lucy
N1 - Funding Information:
Sponsorships: Grant from the American Academy of Otolaryngic Allergy Foundation.
PY - 2009/12
Y1 - 2009/12
N2 - Objective: Immunologic response to fungal antigens has been cited as an etiologic factor in chronic rhinosinusitis (CRS). Previous work demonstrated a significant cytokine response in CRS patients that did not correlate with an immunoglobulin E (IgE) response. This study was performed in an effort to replicate these findings in a more geographically diverse population. Design: Prospective in vitro study. Setting: Two academic tertiary rhinologic practices in Texas and Utah. Methods: Serum and peripheral blood monocytes (PBMC) were obtained from 10 CRS patients and seven controls. Total IgE and fungal-specific IgE levels were determined. Cytokine levels were measured after PBMC exposure to Alternaria, Aspergillus, Cladosporium, and Penicillium extracts. Correlations between cytokine responses and presence of CRS as well as IgE and IgG were determined. Results: Interleukin-5 (IL-5) was produced after Alternaria extract exposure in both CRS patients and controls, but the production was heterogenous and did not correlate with the presence of CRS. IL-5 levels after Alternaria extract exposure correlated strongly with levels of Alternaria-specific IgE in both CRS patients and controls. IL-5 production did not correlate with IgG levels. IL-4, IL-13, and interferon-gamma production did not differ between CRS patients and controls. Conclusions: In contrast to previously reported data, IL-5 responses to Alternaria extract were not predictive of CRS presence. Our results in patients from Utah and Texas significantly differ from previously published findings in predominantly Midwestern patients. The immunologic response to fungal extracts appears to be heterogenous and may differ based on geography, allergy status, and/or other as-yet unknown factors.
AB - Objective: Immunologic response to fungal antigens has been cited as an etiologic factor in chronic rhinosinusitis (CRS). Previous work demonstrated a significant cytokine response in CRS patients that did not correlate with an immunoglobulin E (IgE) response. This study was performed in an effort to replicate these findings in a more geographically diverse population. Design: Prospective in vitro study. Setting: Two academic tertiary rhinologic practices in Texas and Utah. Methods: Serum and peripheral blood monocytes (PBMC) were obtained from 10 CRS patients and seven controls. Total IgE and fungal-specific IgE levels were determined. Cytokine levels were measured after PBMC exposure to Alternaria, Aspergillus, Cladosporium, and Penicillium extracts. Correlations between cytokine responses and presence of CRS as well as IgE and IgG were determined. Results: Interleukin-5 (IL-5) was produced after Alternaria extract exposure in both CRS patients and controls, but the production was heterogenous and did not correlate with the presence of CRS. IL-5 levels after Alternaria extract exposure correlated strongly with levels of Alternaria-specific IgE in both CRS patients and controls. IL-5 production did not correlate with IgG levels. IL-4, IL-13, and interferon-gamma production did not differ between CRS patients and controls. Conclusions: In contrast to previously reported data, IL-5 responses to Alternaria extract were not predictive of CRS presence. Our results in patients from Utah and Texas significantly differ from previously published findings in predominantly Midwestern patients. The immunologic response to fungal extracts appears to be heterogenous and may differ based on geography, allergy status, and/or other as-yet unknown factors.
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U2 - 10.1016/j.otohns.2009.09.016
DO - 10.1016/j.otohns.2009.09.016
M3 - Article
C2 - 19932849
AN - SCOPUS:70449646939
SN - 0194-5998
VL - 141
SP - 750-756.e2
JO - Otolaryngology - Head and Neck Surgery
JF - Otolaryngology - Head and Neck Surgery
IS - 6
ER -