Secretin-like bioactivity in extracts of porcine brain

Abstract

Porcine brain extracts were found to stimulate exocrine pancreatic secretion in a secretin-like fashion. The active material may be secretin since it behaved as secretin through several purification steps including chromatography on Sephadex G-25 and carboxymethyl cellulose, and on high performance liquid chromatography. Furthermore, the highly purified preparation contained, like secretin, C-terminal valine amide, and one of its tryptic fragments had the same mobility as the C-terminal tryptic fragment of secretin on thin layer chromatography.