[Effects of FRG-8813, a new-type histamine H2-receptor antagonist, on the healing of gastric and duodenal ulcer in rats and spontaneously ulcerative mice].
We examined the anti-ulcer effects of FRG-8813, a new-type histamine H2-receptor antagonist, in chronic ulcer models of rats and mice (W/WV). FRG-8813, given orally twice a day for 7 days, accelerated the healing of gastric or duodenal ulcer induced by acetic acid injection or application at the non-antisecretory doses (0.3 approximately 3 mg/kg). Administration of FRG-8813 to rats with ulcers increased the amounts of mucus in the gastric mucosa. These actions of FRG-8813 were more potent than those of famotidine or cimetidine. In W/WV mice, several ulcers spontaneously developed on gastric mucosa during the 8 weeks after the birth. The ulcers were aggravated by several unknown factors after the ulcer generation in W/WV mice. The aggravation of ulcers was inhibited by the 4-week administration of FRG-8813 with diet at the dose of 1 or 10 mg/kg/day, but was not inhibited by cimetidine at the dose of 100 mg/kg/day. From these results, we suggest that FRG-8813 is able to accelerate the healing of ulcers by antisecretory plus increasing actions on the integrity of the gastric mucosal defense mechanisms; therefore FRG-8813 is expected to be a useful drug for the treatment of gastric or duodenal ulcers in humans.
Pharmaceuticals Research Laboratories, Fujirebio, Inc., Tokyo, Japan.
T
T
Yamaura
M
M
Shibata
Y
Y
Chida
N
N
Inaba
S
S
Onodera
H
H
Ohnishi
D000081:Acetamides / Q000494:pharmacology / Q000627:therapeutic use*; D000818:Animals; D002908:Chronic Disease; D004195:Disease Models, Animal; D004381:Duodenal Ulcer / Q000188:drug therapy* / Q000473:pathology; D005744:Gastric Acid / Q000378:metabolism; D006635:Histamine H2 Antagonists / Q000494:pharmacology / Q000627:therapeutic use*; D008297:Male; D051379:Mice; D010880:Piperidines / Q000494:pharmacology / Q000627:therapeutic use*; D011725:Pyridines / Q000494:pharmacology / Q000627:therapeutic use*; D051381:Rats; D017208:Rats, Wistar; D013276:Stomach Ulcer / Q000188:drug therapy* / Q000473:pathology
D000081:Acetamides; D006635:Histamine H2 Antagonists; D010880:Piperidines; D011725:Pyridines; C076948:lafutidine