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- W2016554865 abstract "Purpose.: The major aims of this study were to evaluate the effect of retinal ischemia by behavioral testing and histologic analyses, to visualize ischemia-induced changes of cortical activity by optical imaging of intrinsic signals, and to test the therapeutic effectiveness of simvastatin. Methods.: Retinal ischemia was induced monocularly by elevating intraocular pressure. Visual function was tested behaviorally with a virtual reality optomotor system, physiologically with optical imaging of intrinsic signals, and histologically by counting the surviving retinal ganglion cells (RGCs) in the same animal. Results.: Visual acuity (−38%) and contrast sensitivity (−78%) were significantly reduced 6 days after ischemia compared with controls. The number of RGCs was reduced by 16%. In contrast, optical imaging revealed essentially unchanged cortical activity maps in spite of the lesion. Treatment of mice with simvastatin applied after the ischemic insult significantly improved both visual function as measured behaviorally (∼95% visual acuity, ∼165% contrast sensitivity) and RGC survival (∼30%) compared with vehicle-treated animals (∼42% visual acuity, ∼85% contrast sensitivity). Conclusions.: This specific combination of behavioral measurements of visual function, cortical activity imaging, and histologic analyses is ideally suited to follow ischemia-induced changes and to monitor the effect of therapeutic approaches. Statin therapy may be a promising pharmacologic tool for the treatment of acute retinal ischemia in particular because, in our study, simvastatin was applied after ischemia, a treatment regimen with much greater clinical relevance than preventive administration, as in previous studies." @default.
- W2016554865 created "2016-06-24" @default.
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- W2016554865 date "2011-04-20" @default.
- W2016554865 modified "2023-10-16" @default.
- W2016554865 title "Simvastatin Improves Retinal Ganglion Cell Survival and Spatial Vision after Acute Retinal Ischemia/Reperfusion in Mice" @default.
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- W2016554865 doi "https://doi.org/10.1167/iovs.10-6005" @default.
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