This peptide is produced by the pancreas and promotes the intake of glucose while preventing glycogenolysis and gluconeogenesis. It also facilitates the synthesis of triglycerides in adipocytes and helps in the oxidation of sugar through the Krebs cycle.

Insulin

This peptide from the hypothalamus stimulates the release of prolactin from the anterior pituitary.

Prolactin-releasing hormone

This peptide from the anterior pituitary stimulates the maturation of Graafian follicles in the ovary in females and spermatogenesis in males, enhancing the production of androgen-binding protein by Sertoli cells.

Follicle-stimulating hormone

This peptide from the anterior pituitary stimulates the synthesis of corticosteroids and androgens in the adrenal cortex.

Adrenocorticotropic hormone (or corticotropin)

This amino acid derivative is produced by the adrenal gland and affects nearly all tissues in the body. It increases systolic blood pressure, stimulates glycogenolysis and lipolysis, boosts cardiac output, and influences the occurrence of goosebumps.

Adrenaline (or epinephrine)

This peptide, found in the central nervous system and gastrointestinal tract, is involved in modulation and inhibition of action potentials in neurons.

Galanin

This peptide, secreted by the stomach and duodenum, stimulates the secretion of gastric acid by parietal cells.

Gastrin

This amino acid derivative, primarily produced in the substantia nigra, regulates cellular cAMP levels and acts as a prolactin antagonist throughout the body.

Dopamine

This peptide from the pancreas regulates pancreatic secretions and affects hepatic glycogen levels and gastrointestinal secretions.

Pancreatic polypeptide

This peptide, produced in the testes, ovary, and fetus, inhibits the production of FSH from the anterior pituitary.

Inhibin