PMID- 23520053 OWN - NLM STAT- MEDLINE DCOM- 20140311 LR - 20160511 IS - 2042-6984 (Electronic) IS - 2042-6976 (Linking) VI - 3 IP - 8 DP - 2013 Aug TI - Mucosal brush biopsy of the oral cavity to detect local, peanut-specific immunoglobulin E. PG - 636-41 LID - 10.1002/alr.21164 [doi] AB - BACKGROUND: This study compares the ability of mucosal brush biopsy (MBB) from 2 separate locations in the oral cavity to detect peanut-specific immunoglobulin E (IgE) in patients who report adverse oral cavity reactions when ingesting peanuts. METHODS: Twenty patients who reported a history of oral cavity itching or swelling when ingesting peanuts underwent either MBB of the dorsal tongue (n = 10) or the vestibule (n = 10). Serum testing for total and peanut-specific IgE, using standard immunofluorescent assay, was obtained for all patients. Total and specific IgE for each location were compared. Additionally, the correlation between MBB and peanut-specific IgE on serum was determined using Fisher's exact probability testing. RESULTS: Peanut-specific IgE was detected in 3 of 10 (30%) MBB specimens from the dorsal tongue and in 10 of 10 (100%) MBB specimens from the vestibule. The mean peanut-specific IgE on MBB (kU/L) in the dorsal tongue group was 0.03 vs 0.17 in the vestibule group (p = 0.0002). No significant association was noted for peanut-specific IgE between MBB and serum testing (p = 1.0). CONCLUSION: This study demonstrates for the first time that peanut-specific IgE can be detected using MBB in the oral cavity of patients who are symptomatic when consuming peanuts. The vestibule was a superior location compared to the dorsal tongue for oral cavity MBB, correlating very well with self-reported symptoms. Peanut-specific IgE on MBB overall did not correlate well with serum testing for peanut-specific IgE. 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, New York, NY 10021, USA. wir2011@med.cornell.edu FAU - Cohen, Justin C AU - Cohen JC LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130320 PL - United States TA - Int Forum Allergy Rhinol JT - International forum of allergy & rhinology JID - 101550261 RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Biopsy/methods MH - Fluoroimmunoassay MH - Humans MH - Immunoglobulin E/*analysis/blood MH - Mouth/immunology/*pathology MH - Mouth Mucosa/immunology/*pathology MH - Peanut Hypersensitivity/diagnosis/*immunology OTO - NOTNLM OT - IgE OT - antigen OT - mucosal brush biopsy OT - oral cavity OT - peanut allergy EDAT- 2013/03/23 06:00 MHDA- 2014/03/13 06:00 CRDT- 2013/03/23 06:00 PHST- 2012/11/29 00:00 [received] PHST- 2013/01/23 00:00 [revised] PHST- 2013/02/10 00:00 [accepted] PHST- 2013/03/23 06:00 [entrez] PHST- 2013/03/23 06:00 [pubmed] PHST- 2014/03/13 06:00 [medline] AID - 10.1002/alr.21164 [doi] PST - ppublish SO - Int Forum Allergy Rhinol. 2013 Aug;3(8):636-41. doi: 10.1002/alr.21164. Epub 2013 Mar 20.