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1 General aspects (0)   1.1 Epidemiology (19)   1.2 Population genetics (0)   1.3 Pathogenesis (3)   1.4 Quality of life (4)   1.5 Glaucomas as cause of blindness (9)   1.6 Prevention and screening (8) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (4)   2.2 Cornea (22)   2.3 Sclera (2)   2.4 Anterior chamber angle (2)   2.5 Meshwork (0)     2.5.1 Trabecular meshwork (8)     2.5.2 Schlemms canal (0)     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 (1)       2.6.2.2 Uveoscleral (0)     2.6.3 Compostion (1)   2.7 Episcleral veins and venous pressure (0)   2.8 Iris (6)   2.9 Ciliary body (0)   2.10 Lens (0)   2.11 Vitreous body (0)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (5)   2.13 Retina and retinal nerve fibre layer (9)   2.14 Optic disc (11)   2.15 Optic nerve (3)   2.16 Chiasma and retrochiasmal central nervous system (6)   2.17 Stem cells (2)   2.20 Other (0) 3 Laboratory methods (0)   3.1 Microscopy (2)   3.2 Electron microscopy (1)   3.3 Immunohistochemistry (2)   3.4 Molecular genetics (0)     3.4.1 Linkage studies (1)     3.4.2 Gene studies (29)   3.5 Molecular biology incl. 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    12.8.1 Without tube implant (9)     12.8.2 With tube implant or other drainage devices (18)     12.8.3 Non-perforating (5)     12.8.4 Using laser (0)     12.8.5 Other (0)     12.8.10 Woundhealing antifibrosis (8)     12.8.11 Complications, endophthalmitis (3)   12.9 Trabeculotomy, goniotomy (7)   12.10 Cyclodestruction (3)   12.11 Cyclodialysis (0)   12.12 Cataract extraction (0)     12.12.1 Intracapsular (0)     12.12.2 Extracapsular (0)     12.12.3 Phacoemulsification (6)   12.14 Combined cataract extraction and glaucoma surgery (0)     12.14.1 Intracapsular (0)     12.14.2 Extracapsular (0)     12.14.3 Phacoemulsification (10)   12.15 Capsulotomy (0)   12.16 Vitrectomy (0)   12.17 Anesthesia (4)   12.20 Other (2) 13 Therapeutic prognosis and outcome (0)   13.1 Prognostic factors (1)   13.2 Outcome (0)     13.2.1 IOP (0)     13.2.2 Visual field (0)       13.2.2.1 Progression (0)       13.2.2.2 Improvement (0)     13.2.3 Other (0) 14 Costing studies; pharmacoeconomics (3) 15 Miscellaneous (20)

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Abstract #50376 Published in IGR 14-2

Poly-ε-caprolactone microspheres as a drug delivery system for cannabinoid administration: Development, characterization and in vitro evaluation of their antitumoral efficacy

Herná,n Pé,rez de la Ossa D; Ligresti A; Gil-Alegre ME; Aberturas MR; Molpeceres J; Di Marzo V; Torres Suá,rez AI
Journal of Controlled Release 2012; 161: 927-932

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Cannabinoids show promise for the treatment of various medical conditions such as emesis, anorexia, pain, cancer, multiple sclerosis, Parkinson's disease and glaucoma. However, their high lipohilicity and instability complicate their handling and dosing, and restrict their use as pharmaceuticals. The objective of the present work was to assess the feasibility of developing cannabinoid loaded poly-ε-caprolactone (PCL) microparticles prepared by the oil-in-water emulsion-solvent evaporation technique as a suitable dosage form for their administration. Spherical microparticles with a size range of 20-50μm, and high entrapment efficiency (around 100%) were obtained. Cannabidiol (CBD) dissolved in the polymeric matrix of the microspheres was slowly released in vitro within 10days. In vitro cell viability studies demonstrated the antitumoral activity of CBD released from microparticles. After 4 and 7days of incubation, CBD in microspheres significantly inhibited the growth of MDA-MB-231 cells by 60% as compared to the 50% attained with free drug. The results suggest that PCL microparticles could be an alternative delivery system for long-term cannabinoid administration, showing potential therapeutic advantages over free drug.

Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain.

Full article

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Classification:

11.16 Vehicles, delivery systems, pharmacokinetics, formulation (Part of: 11 Medical treatment)
11.15 Other drugs in relation to glaucoma (Part of: 11 Medical treatment)

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