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RSS FeedsIJMS, Vol. 20, Pages 4649: Retinal Ganglion Cell Death as a Late Remodeling Effect of Photoreceptor Degeneration (International Journal of Molecular Sciences)

 
 

19 september 2019 18:01:39

 
IJMS, Vol. 20, Pages 4649: Retinal Ganglion Cell Death as a Late Remodeling Effect of Photoreceptor Degeneration (International Journal of Molecular Sciences)
 


Inherited or acquired photoreceptor degenerations, one of the leading causes of irreversible blindness in the world, are a group of retinal disorders that initially affect rods and cones, situated in the outer retina. For many years it was assumed that these diseases did not spread to the inner retina. However, it is now known that photoreceptor loss leads to an unavoidable chain of events that cause neurovascular changes in the retina including migration of retinal pigment epithelium cells, formation of “subretinal vascular complexes”, vessel displacement, retinal ganglion cell (RGC) axonal strangulation by retinal vessels, axonal transport alteration and, ultimately, RGC death. These events are common to all photoreceptor degenerations regardless of the initial trigger and thus threaten the outcome of photoreceptor substitution as a therapeutic approach, because with a degenerating inner retina, the photoreceptor signal will not reach the brain. In conclusion, therapies should be applied early in the course of photoreceptor degeneration, before the remodeling process reaches the inner retina.


 
206 viewsCategory: Biochemistry, Biophysics, Molecular Biology
 
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