Karolina Dżaman, Karolina Piskadło-Zborowska, Katarzyna Czerwaty, Rafał Jowik, Małgorzata Stachowiak, Elżbieta Sarnowska
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The impact of the bitter taste receptor on the predisposition to chronic rhinosinusitis.
Objectives: Genetic polymorphisms in bitter taste receptor 2 member 38 (TAS2R38), expressed in the cilia of sinonasal epithelial cells, have been proposed to be contributors to chronic rhinosinusitis (CRS).
Methods: We assessed the impact of the genetically determined TAS2R38 structure on predisposition to CRS and correlated the expression of the TAS2R38 with haplotypes. 86 patients (60 CRS patients, 26 controls) undergoing nasal surgery were enrolled. PCR to identify single nucleotide polymorphisms in genes encoding TAS2R38 were performed. TAS2R38 expression in sinus mucosa tissues was assessed by immunohistochemistry.
Results: Among CRS patients, the protective genotype PAV/PAV of the TAS2R38 was observed with the lowest frequency. Immunohistochemistry displayed significant overexpression of TAS2R38 in patients with CRS and in those with a non-functional AVI/AVI genotype. Under inflammatory conditions, TAS2R38 was found to translocate from the cell membrane.
Conclusions: Genetically determined TAS2R38 polymorphisms may influence susceptibility to CRS. The AVI haplotype seems to be an independent risk factor for CRS. Additionally, TAS2Rs and related signalling pathways might create a unique group of therapeutic targets in CRS.
期刊介绍：
Acta Otorhinolaryngologica Italica first appeared as “Annali di Laringologia Otologia e Faringologia” and was founded in 1901 by Giulio Masini.
It is the official publication of the Italian Hospital Otology Association (A.O.O.I.) and, since 1976, also of the Società Italiana di Otorinolaringoiatria e Chirurgia Cervico-Facciale (S.I.O.Ch.C.-F.).
The journal publishes original articles (clinical trials, cohort studies, case-control studies, cross-sectional surveys, and diagnostic test assessments) of interest in the field of otorhinolaryngology as well as clinical techniques and technology (a short report of unique or original methods for surgical techniques, medical management or new devices or technology), editorials (including editorial guests – special contribution) and letters to the Editor-in-Chief.
Articles concerning science investigations and well prepared systematic reviews (including meta-analyses) on themes related to basic science, clinical otorhinolaryngology and head and neck surgery have high priority.
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