"A nose in the gut": Olfactory receptors in the human gastrointestinal tract

Thomas Braun, Petra Voland, Lars Kunz, Christian Prinz & Manfred Gratzl
Background: Chemoreceptors of the oral cavity and the nose analyze food prior to its uptake into the gastrointestinal tract. We investigated whether nasal olfactory receptors are also expressed by enterochromaffin (EC) cells of the human gut mucosa, and whether their ligands – odorants and spices[for full text, please go to the a.m. URL]