Preparation and characterization of novel, mucoadhesive ofloxacin nanoparticles for ocular drug delivery
Braz. J. Pharm. Sci. (Online)
;
55: e17105, 2019. tab, graf, ilus
Article
in English
| LILACS
| ID: biblio-1019532
ABSTRACT
The efficacy of conventional ocular formulations is limited by poor corneal retention and permeation, resulting in low ocular bioavailability. Mucoadhesive chitosan (CS)/ tripolyphosphatesodium (TPP) and chitosan (CS)/ tripolyphosphatesodium (TPP)-alginate (ALG) nanoparticles were investigated for the prolonged topical ophthalmic delivery of ofloxacin. A modified ionotropic gelation method was used to produce ofloxacin-loaded nanoreservoir systems. The ofloxacin-loaded CS/TPP and CS/TPP-ALG nanoparticles were characterized for particle size, morphology, zeta potential, encapsulation efficiency, subsequent release and corneal penetration study. The designed nanoparticles have a particle size from 113.8 nm to 509 nm and zeta potential from 16.2 mV to 40.3 mV and encapsulation efficiency values ranging from 19.7% to 33.1%. Nanoparticles revealed a release during the first hours, followed by a more gradual drug release. The ofloxacin-loading CS/TPP or CS/TPP-ALG NPs developed are pronounced penetration enhancing effect as compared to OFX solution (5-6.5 times). Thus, these nanoparticles have a strong potential for ocular drug delivery.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Ofloxacin
/
Chitosan
/
Nanoparticles
/
Administration, Ophthalmic
/
Ocular Physiological Phenomena
Language:
English
Journal:
Braz. J. Pharm. Sci. (Online)
Journal subject:
Farmacologia
/
Teraputica
/
Toxicologia
Year:
2019
Type:
Article
Affiliation country:
Iran
Institution/Affiliation country:
Kermanshah University of Medical Sciences/IR
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