That would be a hunger hormone called ghrelin
Scientific References Semaglutide | Drugs BNF NICE
To evaluate how DPP4 in hepatocytes may influence the bioactivity of incretin hormones at each of these sites (i.e., portal or systemic concentration), we administered oral glucose to Dpp4 hep/ and control mice and sampled PV blood via cannulation followed by systemic blood 15 minutes later by cardiac puncture (CP)
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