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1 General aspects (0)   1.1 Epidemiology (4)   1.2 Population genetics (1)   1.3 Pathogenesis (4)   1.4 Quality of life (2)   1.5 Glaucomas as cause of blindness (6)   1.6 Prevention and screening (4) 2 Anatomical structures in glaucoma (1)   2.1 Conjunctiva (0)   2.2 Cornea (6)   2.3 Sclera (0)   2.4 Anterior chamber angle (0)   2.5 Meshwork (2)     2.5.1 Trabecular meshwork (5)     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 (0)       2.6.2.1 Trabecular meshwork (0)       2.6.2.2 Uveoscleral (0)     2.6.3 Compostion (0)   2.7 Episcleral veins and venous pressure (0)   2.8 Iris (0)   2.9 Ciliary body (2)   2.10 Lens (1)   2.11 Vitreous body (0)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (0)   2.13 Retina and retinal nerve fibre layer (13)   2.14 Optic disc (6)   2.15 Optic nerve (2)   2.16 Chiasma and retrochiasmal central nervous system (0)   2.17 Stem cells (0)   2.20 Other (0) 3 Laboratory methods (1)   3.1 Microscopy (1)   3.2 Electron microscopy (0)   3.3 Immunohistochemistry (7)   3.4 Molecular genetics (0)     3.4.1 Linkage studies (10)     3.4.2 Gene studies (1)   3.5 Molecular biology incl. SiRNA (11)   3.6 Cellular biology (5)   3.7 Biochemistry (2)   3.8 Pharmacology (3)   3.9 Pathophysiology (2)   3.10 Immunobiology (0)   3.11 Pharmacogenetics (0)   3.12 Proteomics (0)   3.13 In vivo imaging (0)     3.13.1 Laser Scanning (0)       3.13.1.1 Confocal Scanning Laser Ophthalmoscopy (0)       3.13.1.2 Confocal Scanning Laser Polarimetry (0)     3.13.2 Optical Coherence Tomography (0)       3.13.2.1 Anterior Segment (0)       3.13.2.2 Posterior Segment (0)     3.13.3 RGC Imaging (0)     3.13.4 Other (0)   3.20 Other (2) 4 Tissue culture of ocular cells (0) 5 Experimental glaucoma; animal models (24)   5.1 Rodent (0)   5.2 Primates (0)   5.3 Other (0) 6 Clinical examination methods (0)   6.1 Intraocular pressure measurement; factors affecting IOP (18)     6.1.1 Devices, techniques (0)     6.1.2 Fluctuation, circadian rhythms (0)     6.1.3 Factors affecting IOP (0)   6.2 Tonography, aqueous flow measurement (see also 2.6) (1)   6.3 Biomicroscopy (slitlamp) (2)     6.3.1 Anterior segment (1)     6.3.2 Posterior segment (0)   6.4 Gonioscopy (1)   6.5 Ophthalmoscopy (0)   6.6 Visual field examination and other visual function tests (0)     6.6.1 Conventional manual (0)     6.6.2 Automated (4)     6.6.3 Special methods (e.g. color, contrast, SWAP etc.) (9)   6.7 Electro-ophthalmodiagnosis (5)   6.8 Photography (0)     6.8.1 Anterior segment (0)     6.8.2 Posterior segment (3)   6.9 Computerized image analysis (0)     6.9.1 Laser scanning (13)       6.9.1.1 Confocal Scanning Laser Ophthalmoscopy (0)       6.9.1.2 Confocal Scanning Laser Polarimetry (0)     6.9.2 Optical coherence tomography (9)       6.9.2.1 Anterior (0)       6.9.2.2 Posterior (0)     6.9.5 Other (1)   6.10 Fluorescein (ICG) angiography (0)     6.10.1 Anterior segment (0)     6.10.2 Posterior segment (0)   6.11 Bloodflow measurements (4)   6.12 Ultrasonography and ultrasound biomicroscopy (1)   6.13 Provocative tests (1)   6.19 Telemedicine (1)   6.20 Progression (6)   6.30 Other (2) 8 Refractive errors in relation to glaucoma (0)   8.1 Myopia (0)   8.2 Hypermetropia (0)   8.3 Contact lenses (0)   8.4 Refractive surgical procedures (2)   8.5 Other (0) 9 Clinical forms of glaucomas (0)   9.1 Developmental glaucomas (5)     9.1.1 Congenital glaucoma, Buphthalmos (1)     9.1.2 Juvenile glaucoma (0)     9.1.3 Syndromes of Axenfeld, Rieger, Peters, aniridia (0)     9.1.4 Other (0)   9.2 Primary open angle glaucomas (0)     9.2.1 Ocular hypertension (0)     9.2.2 Other risk factors for glaucoma (6)     9.2.3 Open angle glaucoma with elevated IOP (0)     9.2.4 Normal pressure glaucoma (4)   9.3 Primary angle closure glaucomas (6)     9.3.1 Acute primary angle closure glaucoma (pupillary block) (5)     9.3.2 Chronic primary angle closure glaucoma (pupillary block) (0)     9.3.3 Plateau iris syndrome (0)     9.3.4 Primary angle closure suspect (0)     9.3.5 Primary angle closure (0)     9.3.10 Other (2)   9.4 Glaucomas associated with other ocular and systemic disorders (0)     9.4.1 Steroid-induced glaucoma (2)     9.4.2 Glaucomas associated with disorders of the cornea, conjunctiva, sclera (0)       9.4.2.1 Iridocorneal endothelial syndrome (ICE, incl. irisatrophy) (1)       9.4.2.2 Posterior polymorphous dystrophy (0)       9.4.2.3 Fuchs' endothelial dystrophy (0)       9.4.2.5 Other (0)     9.4.3 Glaucomas associated with disorders of the iris and ciliary body (0)       9.4.3.1 Pigmentary glaucoma (0)       9.4.3.5 Other (0)     9.4.4 Glaucomas associated with disorders of the lens (0)       9.4.4.1 Exfoliation syndrome (6)       9.4.4.2 Glaucomas associated with cataracts (0)       9.4.4.3 Glaucomas associated with lens dislocation (0)       9.4.4.5 Other (0)     9.4.5 Glaucomas associated with disorders of the retina, choroid and vitreous (1)       9.4.5.1 Neovascular glaucoma (2)       9.4.5.5 Other (0)     9.4.6 Glaucomas associated with inflammation, uveitis (4)     9.4.7 Glaucomas associated with ocular trauma (0)     9.4.8 Glaucomas associated with intraocular tumors (0)     9.4.9 Glaucomas associated with elevated episcleral venous pressure (0)       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 (3)     9.4.20 Other (0) 10 Differential diagnosis e.g. anterior and posterior ischemic optic neuropathy (2) 11 Medical treatment (0)   11.1 General management, indication (4)   11.2 Cholinergic drugs (0)   11.3 Adrenergic drugs (1)     11.3.1 Epinephrine (0)     11.3.2 Thymoxamine, dapiprazole (0)     11.3.3 Apraclonidine, brimonidine (2)     11.3.4 Betablocker (10)     11.3.5 Other (0)   11.4 Prostaglandins (15)   11.5 Carbonic anhydrase inhibitors (2)     11.5.1 Systemic (0)     11.5.2 Topical (2)   11.6 Osmotic treatment (0)   11.7 Treatment of bloodflow (1)   11.8 Neuroprotection (8)   11.9 Gene therapy (0)   11.13 Combination therapy (0)     11.13.1 Betablocker and pilocarpine (0)     11.13.2 Betablocker and carbon anhydrase inhibitor (0)     11.13.3 Betablocker and brimonidine (0)     11.13.4 Betablocker and prostaglandin (0)     11.13.5 Other (0)   11.14 Investigational drugs; pharmacological experiments (8)   11.15 Other drugs in relation to glaucoma (2)   11.16 Vehicles, delivery systems, pharmacokinetics, formulation (5)   11.17 Cooperation with medical therapy e.g. persistency, compliance, adherence (6)   11.20 Other (0) 12 Surgical treatment (0)   12.1 General management, indication (1)   12.2 Laser iridotomy (1)   12.3 Laser iridoplasty (0)   12.4 Laser trabeculoplasty and other laser treatment of the angle (3)   12.7 Surgical iridectomy (1)   12.8 Filtering surgery (0)     12.8.1 Without tube implant (10)     12.8.2 With tube implant or other drainage devices (9)     12.8.3 Non-perforating (3)     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 (1)   12.10 Cyclodestruction (2)   12.11 Cyclodialysis (0)   12.12 Cataract extraction (1)     12.12.1 Intracapsular (0)     12.12.2 Extracapsular (0)     12.12.3 Phacoemulsification (9)   12.14 Combined cataract extraction and glaucoma surgery (0)     12.14.1 Intracapsular (0)     12.14.2 Extracapsular (0)     12.14.3 Phacoemulsification (2)   12.15 Capsulotomy (0)   12.16 Vitrectomy (0)   12.17 Anesthesia (1)   12.20 Other (1) 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 (7) 15 Miscellaneous (7)

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Abstract #13458 Published in IGR 8-1

Microarray analysis of retinal gene expression in the DBA/2J model of glaucoma

Steele MR; Inman DM; Calkins DJ; Horner PJ; Vetter ML
Investigative Ophthalmology and Visual Science 2006; 47: 977-985

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PURPOSE: The DBA/2J mouse is a model for secondary angle-closure glaucoma, due to iris atrophy and pigment dispersion, which ultimately lead to increased intraocular pressure (IOP). The study was undertaken to correlate changes in retinal gene expression with IOP elevation by performing microarray analysis of retinal RNA from DBA/2J mice at 3 months before disease onset and at 8 months after IOP elevation. METHODS: IOP was monitored monthly in DBA/2J animals, and animals with normal (3 months) or elevated IOP (8 months) were identified. RNA was prepared from three individual retinas at each age, and the RNA was amplified and used to generate biotin-labeled probe for high-density mouse gene microarrays (U430.2; Affymetrix, Santa Clara, CA). A subset of genes was selected for confirmation by quantitative RT-PCR, by using independent retina samples from DBA/2J animals at 3, 5, and 8 months of age and compared to retinas from C57BL/6J control animals at 3 and 8 months. RESULTS: There were changes in expression of 68 genes, with 32 genes increasing and 36 genes decreasing at 8 months versus 3 months. Upregulated genes were associated with immune response, glial activation, signaling, and gene expression, whereas downregulated genes included multiple crystallin genes. Significant changes in nine upregulated genes and two downregulated genes were confirmed by quantitative RT-PCR, with some showing changes in expression by 5 months. CONCLUSIONS: DBA/2J retina shows evidence of glial activation and an immune-related response after IOP elevation, similar to what has been reported after acute elevation of IOP in other models.

Dr. M.R. Steele, Department of Neurobiology and Anatomy, University of Utah, Salt Lake City, UT 84132, USA

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Classification:

2.13 Retina and retinal nerve fibre layer (Part of: 2 Anatomical structures in glaucoma)
3.5 Molecular biology incl. SiRNA (Part of: 3 Laboratory methods)
5 Experimental glaucoma; animal models

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