A Novel Role for Hypothalamic AgRP Neurons in Mediating Depressive Behavior.

A recent paper by Fang et al. examined the role of Agouti-Related Peptide (AgRP)-expressing neurons in the arcuate nucleus of the hypothalamus in mediating depressive-like behavior in mice. Chronic, but not acute stress, led to changes in neuronal excitability in AgRP neurons concomitant with the display of depressive-like behaviors, which were bidirectionally modulated using AgRP-selective chemogenetic manipulations. Together, these findings broaden our understanding of the diverse roles AgRP neurons play in driving motivational states, aside from their influence on hunger and feeding behaviors.