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Tirzepatide Oral vs

Key milestones are annotated on the timeline, including the identification of GLP-1 and GLP-2 through gene sequencing in 1983, the extraction of Exendin-4 from Gila monster venom in 1991, and the first FDA approval of a GLP-1 analog, Exenatide, in 2005

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Accessed March 30, 2026

The most studied MGBA pathways include the autonomic nervous system (ANS), enteric nervous system (ENS), spinal nerve pathways, hypothalamicpituitaryadrenal (HPA) axis, immune system, enteroendocrine cells (EEC), and microbial metabolites (Fig