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Fig. 4 | Journal of Neuroinflammation

Fig. 4

From: A small peptide antagonist of the Fas receptor inhibits neuroinflammation and prevents axon degeneration and retinal ganglion cell death in an inducible mouse model of glaucoma

Fig. 4

Post-elevated IOP treatment with ONL1204 protects RGCs and prevents axon degeneration in microbead-induced model of glaucoma. WT C57BL/6J mice received an intravitreal injection of ONL1204 (2 μg/1 μl injection) or vehicle at 7 days post-anterior chamber injection of microbeads or saline. a IOP measurements were taken by rebound tonometry every 3–4 days. Data is presented as mean IOP ± SD, N = 6 mice per group. IOP was significantly elevated on days 3–21 in microbead-injected WT mice treated with ONL1204 or vehicle when compared to saline-injected WT controls treated with ONL1204 or vehicle (****P < 0.0001). b Representative confocal images of retinal flatmounts isolated at 28 days post-microbead or saline injection and stained with an anti-Brn3a antibody (red, an RGC-specific marker) and a DAPI nuclear stain (blue) (scale bar, 50 μm). c Quantification of Brn3a-positive RGCs represented as the mean RGC density/mm2 retina ± SD. N = 6 per group (***P < 0.001, ****P < 0.0001). d Representative photomicrographs of PPD-stained optic nerve cross-sections at 28 days post-microbead or saline injections (scale bar, 20 μm). e Quantification of healthy axons represented as the mean axon density (104)/mm2 ON ± SD. N = 6 per group, **P < 0.01

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