The Secretin family are peptides that act as local hormones which regulate activity of G-protein coupled receptors. Most often found in the pancreas and the intestines. Secretin was discovered in 1902 by E. H. Starling. It was later linked to chemical regulation and was the first substance to be deemed a hormone.
#Secretin
#Glucagon
#Glicentin (GLI)
#Vasoactive intestinal peptide (VIP)
#Gastric inhibitory polypeptide (GIP)