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Plos Genetics : Mapping of the Disease Locus and Identification of Adamts10 as a Candidate Gene in a Canine Model of Primary Open Angle Glaucoma, Volume 7

By Barsh, Gregory S.

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Book Id: WPLBN0003931718
Format Type: PDF eBook :
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Reproduction Date: 2015

Title: Plos Genetics : Mapping of the Disease Locus and Identification of Adamts10 as a Candidate Gene in a Canine Model of Primary Open Angle Glaucoma, Volume 7  
Author: Barsh, Gregory S.
Volume: Volume 7
Language: English
Subject: Journals, Science, Genetics
Collections: Periodicals: Journal and Magazine Collection (Contemporary), PLoS Genetics
Historic
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Publisher: Plos

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Barsh, G. S. (n.d.). Plos Genetics : Mapping of the Disease Locus and Identification of Adamts10 as a Candidate Gene in a Canine Model of Primary Open Angle Glaucoma, Volume 7. Retrieved from http://members.worldlibrary.net/


Description
Description : Primary open angle glaucoma (POAG) is a leading cause of blindness worldwide, with elevated intraocular pressure as an important risk factor. Increased resistance to outflow of aqueous humor through the trabecular meshwork causes elevated intraocular pressure, but the specific mechanisms are unknown. In this study, we used genome-wide SNP arrays to map the disease gene in a colony of Beagle dogs with inherited POAG to within a single 4 Mb locus on canine chromosome 20. The Beagle POAG locus is syntenic to a previously mapped human quantitative trait locus for intraocular pressure on human chromosome 19. Sequence capture and next-generation sequencing of the entire canine POAG locus revealed a total of 2,692 SNPs segregating with disease. Of the disease-segregating SNPs, 54 were within exons, 8 of which result in amino acid substitutions. The strongest candidate variant causes a glycine to arginine substitution in a highly conserved region of the metalloproteinase ADAMTS10. Western blotting revealed ADAMTS10 protein is preferentially expressed in the trabecular meshwork, supporting an effect of the variant specific to aqueous humor outflow. The Gly661Arg variant in ADAMTS10 found in the POAG Beagles suggests that altered processing of extracellular matrix and/or defects in microfibril structure or function may be involved in raising intraocular pressure, offering specific biochemical targets for future research and treatment strategies.

 

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