title: Effects of food intake and age on the pharmacokinetics of AS-924, a novel ester-type cephem antibiotic. Comparison with cefpodoxime proxetil.
abstract: The effects of food intake and age on intestinal absorption of AS-924, a novel prodrug-type cephem antibiotic, were examined in 16 healthy adult volunteers (eight young volunteers and eight elderly volunteers) by the cross-over method, using cefpodoxime proxetil (CPOD-PR) as the control drug. The gastrointestinal absorption of AS-924 and CPOD-PR was increased slightly by food intake and the extent of increase was slightly greater after administration of CPOD-PR. The absorption of AS-924 was not affected by age, whereas intestinal absorption of CPOD-PR increased with age. In conclusion, these results confirmed that AS-924 has the unique characteristics as a novel prodrug and that its absorption is less likely to be affected by food intake and age.
authors.affiliation: Department of Medicine, Tokyo Women's Medical College, 8-1, Kawadacho, Shinjuku-ku, 162-8666, Tokyo, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Totsuka
authors.forename: K
authors.initials: K
authors.lastname: Shimizu
authors.forename: N
authors.initials: N
authors.lastname: Mori
authors.forename: T
authors.initials: T
authors.lastname: Sugihara
authors.forename: A
authors.initials: A
authors.lastname: Sakai
authors.forename: S
authors.initials: S
authors.lastname: Yamaji
authors.forename: Y
authors.initials: Y
authors.lastname: Michisuji
authors.forename: Y
authors.initials: Y
authors.lastname: Shinohara
authors.forename: A
authors.initials: A
authors.lastname: Kubo
authors.forename: H
authors.initials: H
authors.lastname: Tokuoka
mesh_terms: D000284:Administration, Oral; D000328:Adult; D000367:Age Factors; D000368:Aged; D000900:Anti-Bacterial Agents / Q000008:administration & dosage* / Q000493:pharmacokinetics; D015296:Ceftizoxime / Q000008:administration & dosage* / Q000031:analogs & derivatives* / Q000493:pharmacokinetics*; D004032:Diet; D018565:Food-Drug Interactions; D006801:Humans; D007408:Intestinal Absorption; D008297:Male; D011355:Prodrugs / Q000008:administration & dosage* / Q000493:pharmacokinetics*; D014556:Urine / Q000737:chemistry; D000097627:Cefpodoxime Proxetil
chemical_list: D000900:Anti-Bacterial Agents; D015296:Ceftizoxime; D011355:Prodrugs; D000097627:Cefpodoxime Proxetil; C121334:ceftizoxime alapivoxil