Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/115508
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Type: Journal article
Title: A review of the mechanisms of cone degeneration in retinitis pigmentosa
Author: Narayan, D.
Wood, J.
Chidlow, G.
Casson, R.
Citation: Acta Ophthalmologica, 2016; 94(8):748-754
Publisher: Wiley-Blackwell
Issue Date: 2016
ISSN: 1755-375X
1755-3768
Statement of
Responsibility: 
Daniel S. Narayan, John P. M. Wood, Glyn Chidlow, Robert J. Casson
Abstract: Retinitis pigmentosa (RP) is an inherited condition that features degeneration of rod and cone photoreceptors. In all forms of RP, the genetic mutation is expressed exclusively in rods; however, cones die too. The secondary death of cones in RP remains somewhat mysterious. A better understanding of the mechanisms that cause cone degeneration in RP could lead to novel treatments that preserve cones. There are a number of prevailing theories that attempt to explain cone degeneration in RP. One concept is that cone survival is dependent on trophic factors produced by rods. Another hypothesis is that cones suffer from a nutrient shortage after rods have been lost. Additionally, oxidative stress and pro-inflammatory microglial activation have also been suggested to play a role in cone death. The present review evaluates the evidence supporting these theories and provides an update on the mechanisms of cone degeneration in RP.
Keywords: Cones; microglia; oxidative stress; RdCVF; retinitis pigmentosa; trophic factors
Rights: © 2016 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd
RMID: 0030058406
DOI: 10.1111/aos.13141
Appears in Collections:Opthalmology & Visual Sciences publications

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