The Role of GLP-1 in Gut Permeability and Calorie Needs
The gut microbiota plays a crucial role in influencing various physiological processes, including gastrointestinal mucosal permeability, bile acid metabolism, short-chain fatty acid synthesis, dietary fiber fermentation, and the signal transduction of farnesoid X receptor/Takeda G protein-coupled receptor 5 (TGR5). The incretin glucagon-like peptide-1 (GLP-1) is primarily produced by L cells in the gut and regulates postprandial blood glucose levels. Research has revealed a complex relationship between the gut microbiota and metabolic disorders, with GLP-1 agonists, such as liraglutide, demonstrating potential in modulating gut health.
GLP-1 and Gut Health
The gut-derived hormone GLP-1 has emerged as a critical mediator of intestinal function, food absorption, and satiety signals. Its secretion is triggered by nutrient-sensing via transporters and G-protein-coupled receptors (GPCRs), and its role in regulating appetite and glucose metabolism has garnered significant attention. Studies have shown that GLP-1 production is lower in individuals with obesity/weight or type 2 diabetes mellitus (T2DM), highlighting the importance of gut health in metabolic function.
The dual-effect of GLP-1 in the arcuate nucleus (ARC) involves activating pro-opiomelanocortin (POMC) neurons while inhibiting neuropeptide Y/agouti-related protein (NPY/AgRP) neurons.
GLP-1 receptor agonists have been shown to influence the gut microbiome, with potential benefits for metabolic health and disease management.
