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1 General aspects (0)   1.1 Epidemiology (10)   1.2 Population genetics (0)   1.3 Pathogenesis (14)   1.4 Quality of life (14)   1.5 Glaucomas as cause of blindness (4)   1.6 Prevention and screening (8) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (5)   2.2 Cornea (22)   2.3 Sclera (6)   2.4 Anterior chamber angle (6)   2.5 Meshwork (0)     2.5.1 Trabecular meshwork (10)     2.5.2 Schlemms canal (1)     2.5.3 Scleral outlet channels (0)   2.6 Aqueous humor dynamics (0)     2.6.1 Production (0)     2.6.2 Outflow (1)       2.6.2.1 Trabecular meshwork (2)       2.6.2.2 Uveoscleral (0)     2.6.3 Compostion (4)   2.7 Episcleral veins and venous pressure (0)   2.8 Iris (4)   2.9 Ciliary body (1)   2.10 Lens (1)   2.11 Vitreous body (0)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (6)   2.13 Retina and retinal nerve fibre layer (14)   2.14 Optic disc (11)   2.15 Optic nerve (2)   2.16 Chiasma and retrochiasmal central nervous system (4)   2.17 Stem cells (0)   2.20 Other (0) 3 Laboratory methods (0)   3.1 Microscopy (4)   3.2 Electron microscopy (1)   3.3 Immunohistochemistry (0)   3.4 Molecular genetics (0)     3.4.1 Linkage studies (2)     3.4.2 Gene studies (38)   3.5 Molecular biology incl. 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Miscellaneous (14)

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Abstract #50989 Published in IGR 14-3

Preparation and characterization of polymeric and lipid nanoparticles of pilocarpine HCl for ocular application

Lütfi G; Müzeyyen D
Pharmaceutical Development and Technology 2013; 18: 701-709

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Pilocarpine is used topically in the treatment of glaucoma. Various studies were performed to improve the bioavailability and prolong the residence time of drugs in ocular drug delivery. Drug loaded polymeric and lipid nanoparticles offer several favourable biological properties, such as biodegradability, nontoxicity, biocompatibility and mucoadhesiveness. Therefore, preparing positively-charged pilocarpine HCl-loaded polymeric and lipid nanoparticles was the purpose of this study. Nanoparticles were prepared by quasi-emulsion solvent evaporation technique. The non-biodegradable positively-charged polymer Eudragit(®) RS 100 and semi-solid lipid excipient Gelucire(®) 44/14 were used as a vehicle, the cationic lipid octadecylamine was used as a cationic agent. The formulations were evaluated in terms of particle size, size distribution, zeta potential measurement, thermal behavior (Differential Scanning Calorimetry DSC), entrapment efficacy and pH. Characterizations of nanoparticles were analyzed during the storage period of 6 months for stability tests. Polymeric and lipid nanoparticles could be prepared successfully promising their use for ophthalmic delivery.

Department of Pharmaceutical Technology, Faculty of Pharmacy, Anadolu University , Eskişehir , Turkey.

Full article

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Classification:

11.16 Vehicles, delivery systems, pharmacokinetics, formulation (Part of: 11 Medical treatment)
11.2 Cholinergic drugs (Part of: 11 Medical treatment)

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