J. Biol. Chem., Vol. 258, Issue 20, 12122-12124, Oct, 1983
Bradykinin reverses the effect of opiates in the gut by enhancing acetylcholine release
DJ Goldstein, TG Ropchak, HR Keiser, GJ Atta, A Argiolas and JJ Pisano
Four naturally occurring peptides of the kinin family, bradykinin,
lysylbradykinin, methionyllysylbradykinin, and polisteskinin reverse the
inhibitory effect of morphine, metenkephalin, and epinephrine on the
electrically stimulated guinea pig ileum longitudinal muscle myenteric
plexus preparation. Bradykinin, the most potent kinin, enhances the release
of acetylcholine in the gut, and its reversal of the opiate inhibitory
effect is blocked by the anticholinergic drug, hyoscine.