The role of Neuropeptide Y in fear conditioning and extinction.

NPY reduces fear expression primarily through Y1 receptors and promotes fear extinction via Y2 receptors in the amygdala. This dual action supports long-term fear suppression and highlights Y2 receptors as promising targets for anxiolytic therapies.

The study reviews preclinical research involving receptor-specific actions of NPY in brain regions related to fear, including knockout mouse models and electrophysiological analyses of neuronal activity.

Identifying how NPY modulates fear and anxiety at the receptor level could lead to new, more effective treatments for anxiety disorders, which are often resistant to current therapies.

The study is largely based on preclinical data, and the exact roles of endogenous NPY and other receptor subtypes in humans remain unclear, requiring further research.