Review Article
Pathways to photoreceptor cell death in inherited retinal degenerations
Eric A. Pierce,
Corresponding Author
Eric A. Pierce
F.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, University of Pennsylvania School of Medicine, 305 Stellar-Chance Labs, 422 Curie Boulevard, Philadelphia, PA 19104-6100
F.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, University of Pennsylvania School of Medicine, 305 Stellar-Chance Labs, 422 Curie Boulevard, Philadelphia, PA 19104-6100.Search for more papers by this author
Eric A. Pierce,
Corresponding Author
Eric A. Pierce
F.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, University of Pennsylvania School of Medicine, 305 Stellar-Chance Labs, 422 Curie Boulevard, Philadelphia, PA 19104-6100
F.M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, University of Pennsylvania School of Medicine, 305 Stellar-Chance Labs, 422 Curie Boulevard, Philadelphia, PA 19104-6100.Search for more papers by this authorAbstract
The mutations that cause many forms of inherited retinal degenerations have been identified, yet the mechanisms by which these mutations lead to death of photoreceptor cells of the retina are not completely understood. Investigations of the pathways from mutation to retinal degeneration have focused on spontaneous and engineered animal models of disease. Based on the studies performed to date, four major categories of degeneration mechanism can be identified. These include disruption of photoreceptor outer segment morphogenesis, metabolic overload, dysfunction of retinal pigment epithelial cells, and chronic activation of phototransduction. Future investigations will likely identify additional mechanisms of photoreceptor damage. This review will summarize what has been learned from studying animal models of non-syndromic inherited retinal degenerations. BioEssays 23:605–618, 2001. © 2001 John Wiley & Sons, Inc.
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