Delayed healing of gastric ulcers in adjuvant arthritis rats: Role of acid secretion and basic fibroblast growth factor

Shinichi Kato, Yoshihiro Ogawa, Akiko Tanaka, Tomonori Kunikata, Koji Takeuchi

研究成果: Contribution to journalArticle査読

9 被引用数 (Scopus)

抄録

Background/Aim: We examined the healing process of chronic gastric ulcers in adjuvant-induced arthritic rats and investigated the mechanism for delayed ulcer healing in arthritic rats, in relation to acid secretion and basic fibroblast growth factor (bFGF). Methods: Arthritis was induced in male dark Agouti rats by a single injection of Freund's complete adjuvant (FCA), while gastric ulcers were induced by thermal cauterization (70°C for 30 s) 7 days after FCA injection. Results: Injection of FCA induced severe arthritis in all animals with a marked acid hypersecretion. The healing of gastric ulcers was significantly delayed in arthritic rats as compared with normal rats. Daily administration of indomethacin delayed ulcer healing in both normal and arthritic rats, but this effect was more pronounced in the latter. In contrast, the healing of gastric ulcers was significantly promoted in both normal and arthritic rats by omeprazole at a dose that inhibited acid secretion completely. The delayed healing of gastric ulcers was not influenced by twice daily administration of NG-nitro-L-arginine methyl ester, aminoguanidine or FR167653 (IL-1/TNF-α synthesis inhibitor), but was significantly accelerated by CS-23 (recombinant human bFGF) in a dose-dependent manner, without effect on the acid secretion. The expression of bFGF was markedly increased after ulceration, but this response was decreased in arthritic rats. Conclusion: The healing of gastric ulcers was delayed in arthritic rats, and this mechanism may be partly attributable to both acid hypersecretion and less expression of bFGF.

本文言語英語
ページ(範囲)171-179
ページ数9
ジャーナルDigestion
63
3
DOI
出版ステータス出版済み - 2001
外部発表はい

All Science Journal Classification (ASJC) codes

  • Gastroenterology

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