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- W3118786201 abstract "The anorexigenic peptide glucagon-like peptide-1 (GLP-1) is secreted from gut enteroendocrine cells and brain preproglucagon (PPG) neurons, which, respectively, define the peripheral and central GLP-1 systems. PPG neurons in the nucleus tractus solitarii (NTS) are widely assumed to link the peripheral and central GLP-1 systems in a unified gut-brain satiation circuit. However, direct evidence for this hypothesis is lacking, and the necessary circuitry remains to be demonstrated. Here we show that PPGNTS neurons encode satiation in mice, consistent with vagal signalling of gastrointestinal distension. However, PPGNTS neurons predominantly receive vagal input from oxytocin-receptor-expressing vagal neurons, rather than those expressing GLP-1 receptors. PPGNTS neurons are not necessary for eating suppression by GLP-1 receptor agonists, and concurrent PPGNTS neuron activation suppresses eating more potently than semaglutide alone. We conclude that central and peripheral GLP-1 systems suppress eating via independent gut-brain circuits, providing a rationale for pharmacological activation of PPGNTS neurons in combination with GLP-1 receptor agonists as an obesity treatment strategy." @default.
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- W3118786201 date "2021-02-15" @default.
- W3118786201 modified "2023-10-17" @default.
- W3118786201 title "Central and peripheral GLP-1 systems independently suppress eating" @default.
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- W3118786201 doi "https://doi.org/10.1038/s42255-021-00344-4" @default.
- W3118786201 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7116821" @default.
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- W3118786201 hasPublicationYear "2021" @default.
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