Later studies showed that most of the gut peptides, such as secretin, cholecystokinin or substance P, were found to play a role of neurotransmitters and neuromodulators in the central and peripheral nervous systems.
[2] The gastrointestinal hormones[3] can be divided into three main groups based upon their chemical structure.
Ghrelin agonistic treatments can be used to treat illnesses such as anorexia and loss of appetites in cancer patients.
Ghrelin treatments for obesity are still under intense scrutiny and no conclusive evidence has been reached.
Amylin controls glucose homeostasis and gastric motility Glucose-dependent insulinotropic polypeptide possesses an acute influence on food intake through its effects on adipocytes Oxyntomodulin plays a role in controlling acid secretion and satiation