The conventional understanding of feeding regulation by metabolic peptides utilizes a “top-down” view of peptidergic signals shaping feeding motivation via the hypothalamus and incorporating pre- and postprandial information via the gut-brain axis. Our lab has gathered evidence for an additional role for these peptides in adjusting the “bottom-up” streams of taste information, which ultimately inform food choice and nutritional intake. Exploring this novel dimension of peptidergic modulation could produce a more comprehensive understanding of links between taste, feeding, and metabolism that better inform the development of diagnostics and therapeutics related to feeding and metabolic regulation.
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