Nasal Cytology and Clinical Rhinology Support a Translational Integrative Neuroscience Perspective.

Nasal cytology is evolving into a promising tool for diagnosing neurological and psychiatric disorders, especially those such as Alzheimer's and Parkinson's diseases. Moreover, recent research has indicated that biomarkers differ greatly between samples taken before and after death. Nasal cytology might help to identify the early stages of cognitive decline. The association of olfactory disturbances with a host of these neurological disorders is remarkable. This means that the nose, something we probably take for granted, could well be the best means of establishing important biomarkers for earlier diagnoses in these conditions. The nose is a source of epithelial and neuroepithelial cells that can be used in in vitro cultured models and nasal cytology provides new avenues for translational, integrative neuroscientific research. The future incorporation of artificial intelligence into cytological analyses would facilitate the acceptance of nasal cytology as a screening platform for neurodegenerative and psychiatric conditions, facilitating early diagnosis and better management for patients.