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. 2007 Apr;119(4):899-905.
doi: 10.1016/j.jaci.2007.01.006. Epub 2007 Mar 2.

Local IgE production and positive nasal provocation test in patients with persistent nonallergic rhinitis

Carmen Rondón  1 , José J Romero, Soledad López, Cristina Antúnez, Enrique Martín-Casañez, Maria J Torres, Cristobalina Mayorga, Rebeca R-Pena, Miguel Blanca
Affiliations

Local IgE production and positive nasal provocation test in patients with persistent nonallergic rhinitis

Carmen Rondón et al. J Allergy Clin Immunol. 2007 Apr.

Abstract

Background: Allergic rhinitis is an IgE-mediated inflammatory disease of the nasal mucosa, which is usually diagnosed by typical symptoms, positive skin tests, and/or serum specific IgE antibodies to allergens. Despite suggestive symptoms of allergic rhinitis, some patients have a negative diagnostic test for atopy.

Objective: To evaluate in the nose the inflammatory response, specific IgE to Dermatophagoides pteronyssinus (DP), and the response to a nasal allergen provocation test with DP (NAPT-DP), in patients with persistent nonallergic rhinitis (PNAR) compared with patients with persistent allergic rhinitis (PAR) and healthy controls.

Methods: Fifty patients with PNAR, 30 with PAR to DP, and 30 healthy controls were studied by determining the nasal leukocyte-lymphocyte phenotype by flow cytometry (CD16, CD8, CD4, CD33, CD3, and CD45), nasal eosinophil cationic protein (ECP), albumin, total and specific IgE to DP, and NAPT-DP.

Results: The PNAR patients showed a similar leukocyte-lymphocyte phenotype in nasal lavage to the PAR patients and was different to the healthy controls. Within the PNAR group, 54% showed a positive NAPT-DP, with 22% of these having nasal specific IgE to DP.

Conclusion: These data support the hypothesis that in persistent nonallergic rhinitis some patients may have local inflammation, nasal IgE production, and a positive response to a nasal allergen provocation test despite no evidence of systemic atopy. Further research is needed to evaluate the influence of other perennial allergens and/or immunologic mechanisms.

Clinical implications: The local production of IgE antibodies without systemic detection is a condition that should be considered in patients with PNAR.

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