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LABORATORY SCIENCES Protection of Retinal Ganglion Cells and the Optic Nerve During Short-term Hyperglycemia in Experimental Glaucoma Andreas Ebneter, MD; Glyn Chidlow, DPhil; John P. M. Wood, DPhil; Robert J. Casson, MB, BS(Hons), DPhil Objective: To evaluate the neuroprotective effect of vival of retinal ganglion cell perikarya increased to a simi- short-term hyperglycemia on the retinal ganglion cell body lar extent in hyperglycemic rats. and axon in a rat model of experimental glaucoma. Conclusions: The optic nerve and retinal ganglion cells Methods: Using a well-described limbal laser tech- are partially protected by short-term hyperglycemia in nique, unilateral ocular hypertension was induced in 2 this rat model of experimental glaucoma. Energy sub- groups (26 per group) of Sprague-Dawley rats. One group strate availability may therefore play a role in glaucoma- remained normoglycemic; the other was rendered hy- tous optic neuropathy. perglycemic by means of an intraperitoneal injection of streptozocin. After 2 weeks of elevated intraocular pres- Clinical Relevance: Our findings, to some extent, sup- sure, axonal and retinal damage profiles were compared port the claims of the Ocular Hypertension Treatment using several histological techniques. Immunohisto- Study, in which diabetes appeared to protect against the chemical changes in the retina and
JAMA Ophthalmology – American Medical Association
Published: Oct 1, 2011
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