Preparation and evaluation of enrofloxacin microspheres and tissue distribution in rats
Journal of Veterinary Science
;
: 157-164, 2015.
Article
Dans Anglais
| WPRIM
| ID: wpr-86404
ABSTRACT
New enrofloxacin microspheres were formulated, and their physical properties, lung-targeting ability, and tissue distribution in rats were examined. The microspheres had a regular and round shape. The mean diameter was 10.06 microm, and the diameter of 89.93% of all microspheres ranged from 7.0 microm to 30.0 microm. Tissue distribution of the microspheres was evaluated along with a conventional enrofloxacin preparation after a single intravenous injection (7.5 mg of enrofloxacin/kg bw). The results showed that the elimination half-life (t(1/2beta)) of enrofloxacin from lung was prolonged from 7.94 h for the conventional enrofloxacin to 13.28 h for the microspheres. Area under the lung concentration versus time curve from 0 h to infinity (AUC(0-infinity)) was increased from 11.66 h.microg/g to 508.00 h.microg/g. The peak concentration (Cmax) in lung was increased from 5.95 microg/g to 93.36 microg/g. Three lung-targeting parameters were further assessed and showed that the microspheres had remarkable lung-targeting capabilities.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Distribution tissulaire
/
Systèmes de délivrance de médicaments
/
Rat Sprague-Dawley
/
Fluoroquinolones
/
Période
/
Injections veineuses
/
Poumon
/
Microsphères
/
Antibactériens
Limites du sujet:
Animaux
/
Femelle
/
Humains
/
Mâle
langue:
Anglais
Texte intégral:
Journal of Veterinary Science
Année:
2015
Type:
Article
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