The effect of fasting on the plasma disposition of triclabendazole following oral administration in goats
Research in Veterinary Science, vol.89, no.3, pp.415-417, 2010 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 89 Issue: 3
- Publication Date: 2010
- Doi Number: 10.1016/j.rvsc.2010.04.009
- Journal Name: Research in Veterinary Science
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.415-417
- Keywords: Fasting, Feeding, Goat, Pharmacokinetics, Triclabendazole
- Kütahya Health Sciences University Affiliated: No
Abstract
This study was designed to investigate the effect of feeding on the plasma disposition of triclabendazole (TCBZ) in goats following oral administration. A total of eight goats, aged 14-16months and weighing 20-30kg were used in this study. The animals were allocated into two groups (fasted and fed groups) of four animals each. The goats in fed group were fed ad libitum but the animals in fasted group were not fed 24h before and 6h after drug administration. Commercial oral drench formulation of TCBZ (Endex-K, 5%) was administered orally to animals in two groups at dose of 10mg/kg bodyweight. Heparinized blood samples were collected between 1 and 192h after treatment and the plasma samples were analysed by high performance liquid chromatography (HPLC) for TCBZ, TCBZ sulphoxide (TCBZ-SO), and TCBZ sulphone (TCBZ-SO2). Relatively very low concentration of TCBZ parent drug was detected between 2 and 48h, but TCBZ-SO and TCBZ-SO2 metabolites were present between 2 and 192h in the plasma samples of fed and fasted animals. Fasting significantly enhanced the plasma concentration of TCBZ and its metabolites. The availability of TCBZ, TCBZ-SO and TCBZ-SO2 in the plasma samples of fasted goats were markedly greater compared to those of fed goats. It was concluded that fasting decreases the digesta flow rate and prolongs the retention of the drug into the gastrointestinal tract, resulting in enhanced quantitative gastrointestinal absorption or systemic availability of TCBZ and its metabolites in fasted goats. © 2010 Elsevier Ltd.