Alytesin, a bombesin-like peptide, is found in extracts of the skin of Alytes obstetricans. Alytesin reduces gastric acid secretion and induces hypertension. Alytesin also induces short-term anorexigenic effects in neonatal chicks

Gastrin-releasing peptide is a regulatory human peptide that elicits gastrin release and regulates gastric acid secretion and enteric motor function. The post-ganglionic fibers of the vagus nerve that innervate the G cells of the stomach release GRP, which stimulates the G cells to release gastrin.

Tyr-PDGF A-Chain (194-211)