期刊
CURRENT EYE RESEARCH
卷 28, 期 3, 页码 153-157出版社
TAYLOR & FRANCIS INC
DOI: 10.1076/ceyr.28.3.153.26246
关键词
ganglion cell; glaucoma; glaucoma pharmacology; intraocular pressure; nitric oxide
Purpose. To investigate the effect of Ginkgo biloba extract (EGb 761) against neurotoxicity of retinal ganglion cells of rats with chronic moderately elevated intraocular pressure (IOP). Methods. Unilateral chronic moderately elevated IOP was produced in rats by cautery of three episcleral vessels. Secondary degeneration was measured with and without EGb 761 for 5 months. At 5 months, retinal ganglion cells were labeled with a fast blue tracer applied to both superior colliculi. Densities of surviving retinal ganglion cells were estimated by counting fast blue labeled cells in whole mounted retinas. Results. When compared with their contralateral control eyes with normal IOP, in the peripheral retina, retinal ganglion cell loss in eyes with chronic, moderately elevated IOP was 29.8+/-1.5% (n=5) at 5 months in untreated animals and 4.6+/-4.5% (n=5) at 5 months in treated animals with EGb 761. Conclusions. Pretreatment and early posttreatment with EGb 761 is an effective neuroprotectant in a rat model of chronic glaucoma.
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