[The stimulating effect of gastrin on the proliferation of gastric fundus mucosa].

Many gastrointestinal hormones have a stimulating action on the proliferation and growth of stomach and intestinal mucosa and on pancreas. This so-called trophic action was investigated most intensive on gastrin. We reproduced this effect autoradiographically by 3H-thymidine incorporation on the stomach corpus mucosa of rats. The animals had increased serum gastrin levels by partial stomach corpus resection that increased the endogenous serum gastrin level. The proliferation stimulating action of gastrin is also detectable at chronic oral application of N-Methyl-N'-nitroso-N-nitroguanidine for induction of stomach and intestinal tumors simultaneously to pentagastrin administration or partial stomach resection in the intact, tumor free oxyntic mucosa of stomach.