title: [Induction of stomach tumors in rats by N-methyl-N-nitroso-N1-nitroguanidine].
abstract: N-methyl-N-nitroso-N'-nitroguanidine was administered as drinking water to Wistar strain and non-inbred male rats in the dosage of 100 mKg/ml for 7 months, Adenocarcinomas of the stomach were produced in about 70% of rats. The first tumors in the glandular stomach were noticed in 10-12.5 months. Studies of the kinetics of morphological changes indicated that MNNG induced a damage to the mucous membrane, subsequent regenerative hyperplasia, adenomatous hyperplasia with cellular and structural atypism, atrophy, pylorization of the mucosa and development of gastric adenocarcinomas.
mesh_terms: D000230:Adenocarcinoma / Q000139:chemically induced* / Q000473:pathology; D000818:Animals; D005753:Gastric Mucosa / Q000473:pathology*; D008297:Male; D008769:Methylnitronitrosoguanidine; D009604:Nitrosoguanidines; D051381:Rats; D013274:Stomach Neoplasms / Q000139:chemically induced* / Q000473:pathology
chemical_list: D009604:Nitrosoguanidines; D008769:Methylnitronitrosoguanidine
vernacular_title: Induktsiia opukholeĭ zheludka u krys N-metil-N-nitroso-Nl-nitroguanidinom