Sustained ophthalmic delivery of ofloxacin from an ion-activated in situ gelling system
Pakistan Journal of Pharmaceutical Sciences. 2009; 22 (2): 175-179
en Inglés
| IMEMR
| ID: emr-92344
ABSTRACT
The poor bioavailability and therapeutic response exhibited by conventional ophthalmic solutions due to rapid pre-corneal elimination of the drug may be overcome by the use of in situ gel forming systems that are instilled as drops into the eye and then undergo a sol-gel transition in the cul-de-sac. The present work describes the formulation and evaluation of an ophthalmic delivery system of an antibacterial agent ofloxacin, based on the concept of ion-activated in situ gelation. Sodium alginate was used as the gelling agent in combination with HPC [Hydroxy Propyl Cellulose] that acted as a viscosity-enhancing agent. In vitro release studies indicated that the alginate/HPC solution retained the drug better than the alginate or HPC solutions alone. The formulations were therapeutically efficacious, sterile, stable and provided sustained release of the drug over a period of time. These results demonstrate that the developed system is an alternative to conventional ophthalmic drops, patient compliance, industrially oriented and economical
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Índice:
IMEMR (Mediterraneo Oriental)
Asunto principal:
Soluciones Oftálmicas
/
Sistemas de Liberación de Medicamentos
/
Ácido Glucurónico
/
Preparaciones de Acción Retardada
/
Alginatos
/
Ácidos Hexurónicos
Idioma:
Inglés
Revista:
Pak. J. Pharm. Sci.
Año:
2009
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