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1 General aspects (0)   1.1 Epidemiology (9)   1.2 Population genetics (3)   1.3 Pathogenesis (7)   1.4 Quality of life (20)   1.5 Glaucomas as cause of blindness (7)   1.6 Prevention and screening (12) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (13)   2.2 Cornea (20)   2.3 Sclera (18)   2.4 Anterior chamber angle (4)   2.5 Meshwork (0)     2.5.1 Trabecular meshwork (22)     2.5.2 Schlemms canal (1)     2.5.3 Scleral outlet channels (1)   2.6 Aqueous humor dynamics (0)     2.6.1 Production (1)     2.6.2 Outflow (3)       2.6.2.1 Trabecular meshwork (0)       2.6.2.2 Uveoscleral (0)     2.6.3 Compostion (8)   2.7 Episcleral veins and venous pressure (0)   2.8 Iris (5)   2.9 Ciliary body (0)   2.10 Lens (0)   2.11 Vitreous body (0)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (16)   2.13 Retina and retinal nerve fibre layer (43)   2.14 Optic disc (50)   2.15 Optic nerve (4)   2.16 Chiasma and retrochiasmal central nervous system (11)   2.17 Stem cells (6)   2.20 Other (0) 3 Laboratory methods (0)   3.1 Microscopy (0)   3.2 Electron microscopy (0)   3.3 Immunohistochemistry (1)   3.4 Molecular genetics (0)     3.4.1 Linkage studies (2)     3.4.2 Gene studies (32)   3.5 Molecular biology incl. 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surgery (0)     12.8.1 Without tube implant (29)     12.8.2 With tube implant or other drainage devices (63)     12.8.3 Non-perforating (5)     12.8.4 Using laser (0)     12.8.5 Other (4)     12.8.10 Woundhealing antifibrosis (23)     12.8.11 Complications, endophthalmitis (20)   12.9 Trabeculotomy, goniotomy (18)   12.10 Cyclodestruction (22)   12.11 Cyclodialysis (3)   12.12 Cataract extraction (1)     12.12.1 Intracapsular (0)     12.12.2 Extracapsular (1)     12.12.3 Phacoemulsification (5)   12.14 Combined cataract extraction and glaucoma surgery (0)     12.14.1 Intracapsular (0)     12.14.2 Extracapsular (0)     12.14.3 Phacoemulsification (28)   12.15 Capsulotomy (0)   12.16 Vitrectomy (0)   12.17 Anesthesia (4)   12.20 Other (3) 13 Therapeutic prognosis and outcome (0)   13.1 Prognostic factors (0)   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 (10) 15 Miscellaneous (40)

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Abstract #80927 Published in IGR 20-3

A Highly Effective and Ultra-Long-Acting Anti-Glaucoma Drug, with a Novel Periorbital Delivery Method

Woodward DF; Wang JW; Coleman RA; Coleman RA; Woodrooffe AJ; Woodrooffe AJ; Clark KL; Clark KL; Stamer WD; Tao G; Fan S; Toris CB
Journal of Ocular Pharmacology and Therapeutics 2019; 35: 265-277

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Two features define the future of glaucoma therapeutics: (1) greatly improved ocular hypotensive efficacy and (2) a delivery method that improves patient convenience and compliance. A highly efficacious and extraordinarily long-acting ocular hypotensive agent PGN 9856-isopropyl ester represents a potential next-generation anti-glaucoma drug. A new periorbital drug delivery route was also investigated. PGN 9856-isopropyl ester pharmacology was determined by employing human cells, including prostanoid receptor transfectants, and FLIPr or cellular dielectric spectroscopy technology. Intraocular pressure (IOP) was measured in conscious cynomolgus monkeys trained to accept pneumatonometry when under gentle restraint. For periorbital application, the compound was applied radially using a roller-ball device connected to a cylindrical reservoir. Pharmacokinetic data were obtained using LC/MS/MS instrumentation. Single doses of PGN 9856-isopropyl ester, administered over a 0.001%-0.01% dose range, produced profound decreases in monkey IOP that persisted for at least 5 days, which was long after the drug was detectable in ocular tissues. It was not uncommon for a single eye drop to reduce IOP to the level of 4-7 mm Hg. Drug application to the periorbital dermis of ocular normotensive monkeys produced a similarly profound reduction in IOP, which was well maintained. PGN 9856-isopropyl ester appears to possess efficacy and duration of action properties unmatched by currently prescribed anti-glaucoma agents and by those currently undergoing clinical evaluation. In addition, application to the periorbital skin using a roller-ball device offers a more convenient method of ophthalmic drug delivery than eye drops and is noninvasive, unlike other "dropless" technologies.

Full article

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Classification:

11.14 Investigational drugs; pharmacological experiments (Part of: 11 Medical treatment)
3.7 Biochemistry (Part of: 3 Laboratory methods)

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