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- W3202077148 abstract "Bitter taste receptors (T2Rs) are G-protein-coupled receptors (GPCRs) expressed on the tongue but also in various locations throughout the body, including on motile cilia within the upper and lower airways. Within the nasal airway, T2Rs detect secreted bacterial ligands and initiate bactericidal nitric oxide (NO) responses, which also increase ciliary beat frequency (CBF) and mucociliary clearance of pathogens. Various neuropeptides, including neuropeptide tyrosine (neuropeptide Y or NPY), control physiological processes in the airway including cytokine release, fluid secretion, and ciliary beating. NPY levels and/or density of NPYergic neurons may be increased in some sinonasal diseases. We hypothesized that NPY modulates cilia-localized T2R responses in nasal epithelia. Using primary sinonasal epithelial cells cultured at air-liquid interface (ALI), we demonstrate that NPY reduces CBF through NPY2R activation of protein kinase C (PKC) and attenuates responses to T2R14 agonist apigenin. We find that NPY does not alter T2R-induced calcium elevation but does reduce T2R-stimulated NO production via a PKC-dependent process. This study extends our understanding of how T2R responses are modulated within the inflammatory environment of sinonasal diseases, which may improve our ability to effectively treat these disorders." @default.
- W3202077148 created "2021-10-11" @default.
- W3202077148 creator A5027109682 @default.
- W3202077148 creator A5040022220 @default.
- W3202077148 creator A5061187034 @default.
- W3202077148 creator A5074348750 @default.
- W3202077148 date "2021-09-27" @default.
- W3202077148 modified "2023-10-14" @default.
- W3202077148 title "Neuropeptide Y Reduces Nasal Epithelial T2R Bitter Taste Receptor–Stimulated Nitric Oxide Production" @default.
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