Galanin (1-19), human, represents the fragment encompassing amino acids 1 to 19 of the humangalanin neuropeptide. Galanin (GAL) is known for its extensive distribution and multifaceted biological roles, such as regulating hormone secretion, providing antinociceptive effects, and altering feeding behavior.
Galanin (1-30), human, is a 30-amino acid neuropeptide that acts as an agonist of GalR1 and GalR2 receptors with Kis of 1 nM. This endogenous peptide exhibits multiple endocrine, metabolic, and behavioral effects and has demonstrated activity on the intestinal system.
Galanin (2-11) amide is a synthetic peptide fragment of the neuropeptide galanin and an agonist of the galanin-2 (GAL2) receptor (EC50= 9.32 nM in a fluorescence imaging plate reader assay).1It selectively binds to the GAL2receptor (IC50= 1.76 nM for the rat receptor) over the GAL1receptor (IC50= 879 nM for the human receptor) but does also bind to the GAL3receptor (Ki= 271 nM for the rat receptor).1,2Intracerebroventricular administration of galanin (2-11) amide (1 nmol/animal) decreases immobility in the forced swim test in rats.3It also reduces the hind paw mechanical pain threshold and increases the hind paw cold sensitivity threshold in rats.1