Regulation of the Expression of SARS-CoV-2 Receptor Angiotensin-Converting Enzyme 2 in Nasal Mucosa

Investigators attempted to verify angiotensin-converting enzyme 2 (ACE2) expression in the nasal mucosa of patients with seasonal allergic rhinitis induced by Japanese cedar pollen and chronic rhinosinusitis with nasal polyp and to examine the effects of short-chain fatty acids on ACE2 expression in airway epithelial cells.