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1 General aspects (0)   1.1 Epidemiology (6)   1.2 Population genetics (1)   1.3 Pathogenesis (0)   1.4 Quality of life (1)   1.5 Glaucomas as cause of blindness (4)   1.6 Prevention and screening (2) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (1)   2.2 Cornea (2)   2.3 Sclera (0)   2.4 Anterior chamber angle (2)   2.5 Meshwork (1)     2.5.1 Trabecular meshwork (16)     2.5.2 Schlemms canal (0)     2.5.3 Scleral outlet channels (0)   2.6 Aqueous humor dynamics (0)     2.6.1 Production (2)     2.6.2 Outflow (2)       2.6.2.1 Trabecular meshwork (2)       2.6.2.2 Uveoscleral (1)     2.6.3 Compostion (0)   2.7 Episcleral veins and venous pressure (0)   2.8 Iris (0)   2.9 Ciliary body (1)   2.10 Lens (0)   2.11 Vitreous body (0)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (1)   2.13 Retina and retinal nerve fibre layer (8)   2.14 Optic disc (11)   2.15 Optic nerve (1)   2.16 Chiasma and retrochiasmal central nervous system (0)   2.17 Stem cells (0)   2.20 Other (1) 3 Laboratory methods (0)   3.1 Microscopy (0)   3.2 Electron microscopy (0)   3.3 Immunohistochemistry (11)   3.4 Molecular genetics (3)     3.4.1 Linkage studies (6)     3.4.2 Gene studies (7)   3.5 Molecular biology incl. 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with intraocular tumors (0)     9.4.9 Glaucomas associated with elevated episcleral venous pressure (2)       9.4.10 Glaucomas associated with hemorrhage (0)     9.4.11 Glaucomas following intraocular surgery (0)       9.4.11.1 Ciliary block (malignant) glaucoma (0)       9.4.11.2 Glaucomas in aphakia and pseudophakia (0)       9.4.11.3 Epithelial, fibrous, and endothelial proliferation (0)       9.4.11.4 Glaucomas associated with corneal surgery (0)       9.4.11.5 Glaucomas associated with vitreoretinal surgery (0)     9.4.15 Glaucoma in relation to systemic disease (4)     9.4.20 Other (1) 10 Differential diagnosis e.g. anterior and posterior ischemic optic neuropathy (6) 11 Medical treatment (0)   11.1 General management, indication (6)   11.2 Cholinergic drugs (0)   11.3 Adrenergic drugs (0)     11.3.1 Epinephrine (0)     11.3.2 Thymoxamine, dapiprazole (0)     11.3.3 Apraclonidine, brimonidine (5)     11.3.4 Betablocker (14)     11.3.5 Other (2)   11.4 Prostaglandins (22)   11.5 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tube implant (5)     12.8.2 With tube implant or other drainage devices (8)     12.8.3 Non-perforating (12)     12.8.4 Using laser (0)     12.8.5 Other (0)     12.8.10 Woundhealing antifibrosis (14)     12.8.11 Complications, endophthalmitis (3)   12.9 Trabeculotomy, goniotomy (2)   12.10 Cyclodestruction (4)   12.11 Cyclodialysis (0)   12.12 Cataract extraction (0)     12.12.1 Intracapsular (0)     12.12.2 Extracapsular (0)     12.12.3 Phacoemulsification (3)   12.14 Combined cataract extraction and glaucoma surgery (0)     12.14.1 Intracapsular (0)     12.14.2 Extracapsular (0)     12.14.3 Phacoemulsification (0)   12.15 Capsulotomy (0)   12.16 Vitrectomy (0)   12.17 Anesthesia (2)   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 (3) 15 Miscellaneous (4)

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Abstract #9706 Published in IGR 5-3

Gene microarray analysis of experimental glaucomatous retina from cynomologous monkey

Miyahara T; Kikuchi T; Akimoto M; Kurokawa T; Shibuki H; Yoshimura N
Investigative Ophthalmology and Visual Science 2003; 44: 4347-4356

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PURPOSE: To systematically explore changes in gene expression in the retina of monkeys with laser-induced glaucoma and to validate the microarray data on eyes with experimental glaucoma. METHODS: Glaucoma was induced in the right eye of four monkeys by repeated argon laser photocoagulation of the trabecular meshwork. The left eye served as the control. Retinas were isolated from glaucomatous and control eyes 30 days after photocoagulation. Gene expression changes were analyzed by human microarray chips which displayed a total of 9182 elements including Expression Sequence Tag (EST) clones. Changes in the expression of some genes were further confirmed by real-time PCR analysis. Immunohistochemical studies to examine protein expression of some gene products were also done for several genes that showed up- or down-regulation by the microarray analysis. RESULTS: Two eyes with mild glaucoma and two with severe glaucoma were produced. In the mild and severe glaucomatous retina, the number of upregulated genes was 45 and 18, and the number of downregulated genes was 17 and 21, respectively. The number of genes that were up- or down-regulated was 0.7% of all the genes examined. The real-time PCR analysis confirmed expression changes of some genes found in the microarray analysis. Ceruloplasmin was one of the up-regulated genes, and it was found by immunohistochemical analyses to be expressed in Müller cells. CONCLUSIONS: Gene expression profiles in laser-induced glaucomatous monkey retinas were determined, and only a very small population of genes was up- or downregulated in glaucomatous eyes. Up-regulation of ceruloplasmin protein was found in the Müller cells.

Dr. T. Miyahara, Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Japan

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Classification:

3.4 Molecular genetics (Part of: 3 Laboratory methods)

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