in adult coeliac sprue patients , intraduodenal instillation of a hypertonic glucose-citric acid solution may release gastrointestinal hormones of the proximal ( secretin , gastric inhibitory polypeptide , motilin ) and distal ( enteroglucagon , neurotensin ) small intestine and , indirectly , of the pancreas ( glucagon , insulin , pancreatic polypeptide ) .
C0017182
gastrointestinal hormones
C0026594
motilin