title: Thioproline prevents carcinogenesis in the remnant stomach induced by duodenal reflux.
abstract: An excessive duodenal reflux induced by surgery has been widely accepted to cause gastric carcinogenesis in the remnant stomach. As one of causative factors for malignancy, N-nitroso compounds produced by enteric bacteria have been postulated. However, there is no concrete information to prove this hypothesis. This study was undertaken to elucidate the factors underlying the remnant stomach carcinogenesis, by giving thiazolidine-4-carboxylic acid (thioproline; TPRO) to the rats with duodenal reflux as a nitrite scavenger. Operated 39 animals were used, divided into 2 groups; one with a diet containing 0.5% TPRO (n=18), and the other with a diet without TPRO (n=21). Adenocarcinoma developed in 16 rats out of 21 (76.2%) of untreated rats, whereas adenocarcinoma was detected in 1 rat of the TPRO-treated rats (5.6%). TPRO thus prevented the development of gastric cancer in the remnant stomach, thereby suggesting a concern of nitroso compounds to the carcinogenesis.
authors.affiliation: Department of Pathology, Shiga University of Medical Science, Seta-tsukinowa-cho, Ohtsu, Shiga 520-2192, Japan.
authors.forename: Masashi
authors.initials: M
authors.lastname: Suo
authors.forename: Ken-Ichi
authors.initials: K
authors.lastname: Mukaisho
authors.forename: Akihiko
authors.initials: A
authors.lastname: Shimomura
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Sugihara
authors.forename: Takanori
authors.initials: T
authors.lastname: Hattori
mesh_terms: D000230:Adenocarcinoma / Q000139:chemically induced / Q000517:prevention & control; D000818:Animals; D016588:Anticarcinogenic Agents / Q000494:pharmacology*; D000970:Antineoplastic Agents / Q000494:pharmacology; D004386:Duodenum / Q000378:metabolism* / Q000473:pathology; D005753:Gastric Mucosa / Q000378:metabolism*; D008297:Male; D008953:Models, Anatomic; D009573:Nitrites / Q000737:chemistry / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar; D013274:Stomach Neoplasms / Q000139:chemically induced / Q000517:prevention & control*; D013844:Thiazoles / Q000737:chemistry / Q000494:pharmacology*; D053778:Thiazolidines
chemical_list: D016588:Anticarcinogenic Agents; D000970:Antineoplastic Agents; D009573:Nitrites; D013844:Thiazoles; D053778:Thiazolidines; C003438:thiazolidine-4-carboxylic acid