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1 General aspects (0)   1.1 Epidemiology (6)   1.2 Population genetics (0)   1.3 Pathogenesis (4)   1.4 Quality of life (6)   1.5 Glaucomas as cause of blindness (1)   1.6 Prevention and screening (3) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (3)   2.2 Cornea (5)   2.3 Sclera (2)   2.4 Anterior chamber angle (2)   2.5 Meshwork (1)     2.5.1 Trabecular meshwork (8)     2.5.2 Schlemms canal (2)     2.5.3 Scleral outlet channels (0)   2.6 Aqueous humor dynamics (0)     2.6.1 Production (2)     2.6.2 Outflow (4)       2.6.2.1 Trabecular meshwork (0)       2.6.2.2 Uveoscleral (0)     2.6.3 Compostion (1)   2.7 Episcleral veins and venous pressure (0)   2.8 Iris (0)   2.9 Ciliary body (0)   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 (11)   2.14 Optic disc (9)   2.15 Optic nerve (4)   2.16 Chiasma and retrochiasmal central nervous system (0)   2.17 Stem cells (0)   2.20 Other (0) 3 Laboratory methods (10)   3.1 Microscopy (1)   3.2 Electron microscopy (5)   3.3 Immunohistochemistry (9)   3.4 Molecular genetics (1)     3.4.1 Linkage studies (16)     3.4.2 Gene studies (2)   3.5 Molecular biology incl. 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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 (1)       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 (1)     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 (7) 11 Medical treatment (0)   11.1 General management, indication (10)   11.2 Cholinergic drugs (2)   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 (15)     11.3.5 Other (0)   11.4 Prostaglandins (35)   11.5 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Abstract #11284 Published in IGR 6-3

Molecular and cellular reactions of retinal ganglion cells and retinal glial cells under centrifugal force loading

Kashiwagi K; Iizuka Y; Tanaka Y; Araie M; Suzuki Y; Tsukahara S
Investigative Ophthalmology and Visual Science 2004; 45: 3778-3786

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PURPOSE: To investigate changes in retinal ganglion cell (RGC) survival and morphology, retinal glial cell effects on RGC survival, and changes in mRNA expression during centrifugal force loading using a newly developed device. METHODS: Changes in RGC survival and morphology were examined when isolated RGCs from 2-day-old rats were loaded with centrifugal force equivalent to 16, 28, or 33 mmHg. The effects of cocultured retinal glial cells on RGC survival were studied in the presence of centrifugal force equivalent to 16 and 28 mmHg for 48 hours. The microarray method and real-time polymerase chain reaction confirmed changes in mRNA expression when RGCs and retinal glial cells were loaded with centrifugal force equivalent to 28 mmHg for 24 hours. RESULTS: The survival of isolated RGCs and the number of neurites were significantly decreased by centrifugal force loading. Conversely, there was no significant change in the survival of isolated retinal glial cells. The survival of cocultured RGCs was significantly better than that of isolated RGCs. In contrast to the numerous changes in the mRNA expression of retinal glial cells subjected to centrifugal force loading, there was no significant change in the mRNA expression of RGCs. CONCLUSIONS: The developed device may have potential for use as an in vitro model of RGC damage. The response to centrifugal force loading varies according to cell type, and the marked changes in the mRNA expression of retinal glial cells may be involved in the improvement of RGC survival.

Dr. K. Kashiwagi, Department of Ophthalmology, University of Yamanashi Faculty of Medicine, Yamanashi, Japan. kenjik@yamanashi.ac.jp

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Classification:

3.6 Cellular biology (Part of: 3 Laboratory methods)
2.13 Retina and retinal nerve fibre layer (Part of: 2 Anatomical structures in glaucoma)

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