title: Preventive effects of lansoprazole and famotidine on gastric mucosal injury induced by low-dose aspirin in Helicobacter pylori-negative healthy volunteers.
abstract: The preventive effects of lansoprazole and famotidine on low-dose aspirin-induced gastric mucosal injury in relation to gastric acidity were compared in healthy Japanese volunteers. Fifteen Helicobacter pylori-negative volunteers with different CYP2C19 genotypes were randomly administered aspirin 100 mg, aspirin plus famotidine 20 mg twice daily, or aspirin plus lansoprazole 15 mg once daily for 7 days each in a crossover fashion. Gastroscopy for the evaluation of mucosal injury based on modified Lanza score (MLS) and 24-hour intragastric pH monitoring were performed on day 7 of each regimen. Aspirin induced gastric mucosal injury (median MLS = 3). Lansoprazole significantly decreased MLS to 0, which was significantly lower than that by famotidine (MLS = 1) (P < .05). Medians of pH 3 holding time and mean 24-hour pH values with the lansoprazole regimen were significantly higher than those with famotidine (P < .05). No significant differences in MLS were observed among the different CYP2C19 genotype groups in any of the treatment regimens. In this 7-day study, lansoprazole appeared to be more protective than famotidine against low-dose aspirin-induced mucosal injury but a larger well-controlled study is necessary to establish a definitive clinical benefit.
authors.affiliation: First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan.
authors.forename: Masafumi
authors.initials: M
authors.lastname: Nishino
authors.forename: Mitsushige
authors.initials: M
authors.lastname: Sugimoto
authors.forename: Chise
authors.initials: C
authors.lastname: Kodaira
authors.forename: Mihoko
authors.initials: M
authors.lastname: Yamade
authors.forename: Takahiro
authors.initials: T
authors.lastname: Uotani
authors.forename: Naohito
authors.initials: N
authors.lastname: Shirai
authors.forename: Mutsuhiro
authors.initials: M
authors.lastname: Ikuma
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Tanaka
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Sugimura
authors.forename: Akira
authors.initials: A
authors.lastname: Hishida
authors.forename: Takahisa
authors.initials: T
authors.lastname: Furuta
mesh_terms: D053799:2-Pyridinylmethylsulfinylbenzimidazoles / Q000008:administration & dosage / Q000627:therapeutic use*; D000328:Adult; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000008:administration & dosage / Q000633:toxicity; D000897:Anti-Ulcer Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D001189:Aryl Hydrocarbon Hydroxylases / Q000235:genetics; D001241:Aspirin / Q000008:administration & dosage / Q000633:toxicity; D018592:Cross-Over Studies; D065731:Cytochrome P-450 CYP2C19; D015738:Famotidine / Q000008:administration & dosage / Q000627:therapeutic use*; D005260:Female; D005745:Gastric Acidity Determination; D005753:Gastric Mucosa / Q000187:drug effects* / Q000473:pathology; D005838:Genotype; D006635:Histamine H2 Antagonists / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D007564:Japan; D064747:Lansoprazole; D008297:Male; D054328:Proton Pump Inhibitors; D012720:Severity of Illness Index; D013276:Stomach Ulcer / Q000139:chemically induced / Q000235:genetics / Q000473:pathology / Q000517:prevention & control*; D055815:Young Adult
chemical_list: D053799:2-Pyridinylmethylsulfinylbenzimidazoles; D000894:Anti-Inflammatory Agents, Non-Steroidal; D000897:Anti-Ulcer Agents; D006635:Histamine H2 Antagonists; D054328:Proton Pump Inhibitors; D064747:Lansoprazole; D015738:Famotidine; D001189:Aryl Hydrocarbon Hydroxylases; C045793:CYP2C19 protein, human; D065731:Cytochrome P-450 CYP2C19; D001241:Aspirin