title: The oral bioavailability of ibuprofen enantiomers in broiler chickens.
abstract: Doses of racemic ibuprofen ranging from 5 to 20 mg/kg body weight were administered intravenously (i.v.) and orally to broiler chickens and plasma concentration-time profiles for both ibuprofen enantiomers were determined. The absorption of ibuprofen was evaluated after a bolus administration of a commercially available suspension into the crop and proventriculus, respectively. An enterohepatic circulation as described for other nonsteroidal anti-inflammatory drugs (NSAIDs) in other species could be suggested for both enantiomers after i.v. and oral administration. Significantly higher area under the curve (AUC) values for S(+)-ibuprofen compared with R(-)-ibuprofen were collected after crop and proventriculus administration. Several factors could be responsible for the significant differences in AUC values between both enantiomers.
authors.affiliation: Laboratory of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Ghent University, Harelbekestraat 72, B-9000 Gent, Belgium.
authors.forename: B
authors.initials: B
authors.lastname: Vermeulen
authors.forename: J P
authors.initials: JP
authors.lastname: Remon
mesh_terms: D000042:Absorption; D000284:Administration, Oral; D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000493:pharmacokinetics*; D019540:Area Under Curve; D001682:Biological Availability; D002645:Chickens / Q000502:physiology*; D002851:Chromatography, High Pressure Liquid; D004305:Dose-Response Relationship, Drug; D007052:Ibuprofen / Q000493:pharmacokinetics*; D007275:Injections, Intravenous; D007536:Isomerism; D008297:Male
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D007052:Ibuprofen