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What are peptides and how they work Peptides are short chains of amino acids, typically under 50 residues, capable of signaling cellular pathways with high specificity
We limit our discussion to intestinal biology and the resulting metabolic phenotypes and refer readers interested in other aspects of the GLP-1R, GLP-2R and GIPR biology to access other excellent publications (Ghislain and Poitout, 2021
6.3 The kynurenine pathway: an interactive mechanism linking gut microbiota, immunity, and neurotransmitters Specific neurotransmitters, such as GABA, dopamine, glutamate, and serotonin (5-HT), are derived from precursors tyrosine and tryptophan, which are transported across the BBB into the CNS and subsequently converted into neurotransmitters (213)
This longer half-life is beneficial for bodybuilders and athletes as it gives time to bind to receptors and exert hormonal effects
Somatostatin: An inhibitory hormone that suppresses GH release, providing negative feedback to prevent excessive secretion