The GLP-1R Agonist Semaglutide Reduces Motivated Running and Alters Dopamine Dynamics in the Nucleus Accumbens.

ABSTRACT: Glucagon-like peptide-1 receptor (GLP-1R) agonists have recently emerged as powerful tools for the treatment of obesity through their ability to suppress food intake. However, their effects on non-ingestive motivated behaviors remain incompletely understood. Here, we show that the long-acting GLP-1R agonist semaglutide (SG) suppresses voluntary wheel running in both lean and diet-induced obese mice. Importantly, this suppression of activity was not caused by hypophagia and was accompanied by decreased motivation, with SG-treated mice displaying reduced effort for wheel access in a progressive ratio task. Real-time measurements of dopamine via fiber photometry revealed specific dopamine changes in the nucleus accumbens at both the beginning and end of running bouts, with SG-treated animals

SUBMITTER: Foscue EP 

PROVIDER: S-EPMC12632335 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature