Effects of 13-nle-motilin on salivary, gastric, and pancreatic secretions in man

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Abstract
Salivary, gastric, and pancreatic secretory responses to intravenous 13-norleucine-motilin (13-nle-motilin), a synthetic analog of motilin and biologically equivalent to the natural polypeptide, were studied in healthy volunteers. 13-nle-Motilin in doses of 100 ng/kg body wt/hr significantly stimulated gastric pepsin output, while H+ secretion and serum gastrin levels remained unchanged. Enhanced pepsin secretion was not accompanied by an increase in gastric secretion of cyclic 3′, 5′-adenosine monophosphate, nor did gastric mucosal levels of the cyclic nucleotide rise. A dose of 13-nle-motilin, which stimulated gastric pepsin output, did not exert any significant effect on salivary and pancreatic secretions.