PMID- 23136039 OWN - NLM STAT- MEDLINE DCOM- 20131231 LR - 20160511 IS - 2042-6984 (Electronic) IS - 2042-6976 (Linking) VI - 3 IP - 5 DP - 2013 May TI - Detecting local immunoglobulin E from mucosal brush biopsy of the inferior turbinates using microarray analysis. PG - 399-403 LID - 10.1002/alr.21111 [doi] AB - BACKGROUND: It has been previously demonstrated that local, antigen-specific immunoglobulin E (IgE) can be detected using a standard in vitro assay of lysed epithelial cells in saline, harvested via nasal mucosal brush biopsy (MBB). However, compared to surgical biopsy or serum, smaller amounts of IgE are harvested using MBB, making detection much more difficult. Microarray analysis (MA) requires less IgE for detection, making this an attractive option for MBB. The goals of this study were to compare MA to a standard IgE assay for detecting antigen-specific IgE from MBB and to test the association between the presence of multiple positive components on MA with specific IgE on standard assay and skin-prick testing (SPT) grade. METHODS: MBB samples from 18 allergic rhinitis patients, which were previously tested for antigen-specific IgE to common airborne allergens using a standard IgE assay, underwent MA for antigen-specific IgE to multiple components of airborne and food allergens. Fisher's exact probability testing was used to measure the strength of association between the 2 testing modalities for Timothy grass, ragweed, cat, Alternaria, and D. farinae. RESULTS: MA correlated very highly with standard assay (p < 0.0001) and 50% of positive antigens on MA detected multiple components to that antigen. The presence of multiple components was not associated with specific IgE levels on standard assay or SPT grade. CONCLUSION: This is the first demonstration that antigen-specific IgE in saline samples can be measured using MA. The ability of MA to measure smaller amounts of IgE, with similar accuracy, may give it a potential advantage for MBB analysis in the future. CI - (c) 2013 ARS-AAOA, LLC. FAU - Reisacher, William R AU - Reisacher WR AD - Department of Otolaryngology-Head and Neck Surgery, Weill Cornell Medical College, NewYork-Presbyterian Hospital, 1305 York Avenue, New York, NY 10021, USA. wir2011@med.cornell.edu LA - eng PT - Journal Article DEP - 20121107 PL - United States TA - Int Forum Allergy Rhinol JT - International forum of allergy & rhinology JID - 101550261 RN - 0 (Allergens) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Allergens/adverse effects/immunology MH - Biopsy MH - Enterocytes/*immunology/ultrastructure MH - Feasibility Studies MH - Humans MH - Immunoglobulin E/*analysis MH - Microarray Analysis/*methods MH - Microvilli/*metabolism/ultrastructure MH - Nasal Mucosa/*immunology/pathology MH - Pollen/adverse effects/immunology MH - Rhinitis, Allergic, Perennial/*diagnosis/immunology MH - Rhinitis, Allergic, Seasonal/*diagnosis/immunology MH - Turbinates/immunology/pathology EDAT- 2012/11/09 06:00 MHDA- 2014/01/01 06:00 CRDT- 2012/11/09 06:00 PHST- 2012/07/27 00:00 [received] PHST- 2012/09/18 00:00 [revised] PHST- 2012/09/25 00:00 [accepted] PHST- 2012/11/09 06:00 [entrez] PHST- 2012/11/09 06:00 [pubmed] PHST- 2014/01/01 06:00 [medline] AID - 10.1002/alr.21111 [doi] PST - ppublish SO - Int Forum Allergy Rhinol. 2013 May;3(5):399-403. doi: 10.1002/alr.21111. Epub 2012 Nov 7.