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Rapid restoration of visual pigment and function with oral retinoid in a mouse model of childhood blindness

By J. Preston Van Hooser, Tomas S. Aleman, Yu-Guang He, Artur V. Cideciyan, Vladimir Kuksa, Steven J. Pittler, Edwin M. Stone, Samuel G. Jacobson and Krzysztof Palczewski

Abstract

Mutations in the retinal pigment epithelium gene encoding RPE65 are a cause of the incurable early-onset recessive human retinal degenerations known as Leber congenital amaurosis. Rpe65-deficient mice, a model of Leber congenital amaurosis, have no rod photopigment and severely impaired rod physiology. We analyzed retinoid flow in this model and then intervened by using oral 9-cis-retinal, attempting to bypass the biochemical block caused by the genetic abnormality. Within 48 h, there was formation of rod photopigment and dramatic improvement in rod physiology, thus demonstrating that mechanism-based pharmacological intervention has the potential to restore vision in otherwise incurable genetic retinal degenerations

Topics: Biological Sciences
Publisher: The National Academy of Sciences
Year: 2000
OAI identifier: oai:pubmedcentral.nih.gov:26998
Provided by: PubMed Central
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