title: Prokinetic effect of AS-4370 on gastric emptying in healthy adults.
abstract: The effect of AS-4370 on gastric emptying was investigated in healthy adults using 99mTc-DTPA. Single doses of AS-4370 2.5, 5 or 10 mg or placebo were administered to 12 subjects in a controlled, double-blind, cross-over study. Tests were performed twice weekly in each subject. Thirty min after administration of test drug or placebo, each subject swallowed a bun and orange juice containing 200 microCi nuclide. The radioactivity of the gastric content was measured for 40 min and the activity of the residue was expressed as a percentage of count at the initiation of measurements. The percentage radioactivity, AUC and gastric emptying time fitted by a power exponential curve, were analyzed. No significant difference was observed between the three dose levels of AS-4370 and placebo in half emptying time. However, decreases in the percentage of radioactivity with time were noted; 5 mg at 10 to 16 min and 10 mg at 8 to 24 min after the start of recording. Lower AUCs after 5 mg and 10 mg compared to placebo were also found. The half emptying time was also shorter after 5 mg and 10 mg than placebo. There was no difference in these parameters between 2.5 mg and placebo. The results indicate that AS-4370 5 and 10 mg but not 2.5 mg accelerates gastric emptying in healthy adults.
authors.affiliation: First Department of Surgery, Nara Medical University, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kanaizumi
authors.forename: H
authors.initials: H
authors.lastname: Nakano
authors.forename: Y
authors.initials: Y
authors.lastname: Matsui
authors.forename: H
authors.initials: H
authors.lastname: Ishikawa
authors.forename: R
authors.initials: R
authors.lastname: Shimizu
authors.forename: S
authors.initials: S
authors.lastname: Park
authors.forename: N
authors.initials: N
authors.lastname: Kuriya
mesh_terms: D000328:Adult; D001549:Benzamides / Q000008:administration & dosage / Q000494:pharmacology*; D004311:Double-Blind Method; D005746:Gastric Emptying / Q000187:drug effects*; D005765:Gastrointestinal Agents / Q000008:administration & dosage / Q000494:pharmacology*; D006801:Humans; D007700:Kinetics; D008297:Male; D008875:Middle Aged; D009025:Morpholines / Q000008:administration & dosage / Q000494:pharmacology*; D016284:Technetium Tc 99m Pentetate; D013997:Time Factors
chemical_list: D001549:Benzamides; D005765:Gastrointestinal Agents; D009025:Morpholines; C062720:mosapride; D016284:Technetium Tc 99m Pentetate