Secretin is an endocrine hormone that stimulates the secretion of bicarbonate-rich pancreatic fluids. Canine secretin can regulates gastric chief cell function and paracellular permeability in canine gastric monolayers by a Src kinase-dependent pathway.
HMR 1556 is a chromanol derivative and is an IKs blocker (IC50s of 10.5 nM and 34 nM in canine and guinea pig left ventricular myocytes, respectively).