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Type: Journal article
Title: Homozygous mutations in PXDN cause congenital cataract, corneal opacity, and developmental glaucoma
Author: Khan, K.
Rudkin, A.
Parry, D.
Burdon, K.
McKibbin, M.
Logan, C.
Abdelhamed, Z.
Muecke, J.
Fernandez-Fuentes, N.
Laurie, K.
Shires, M.
Fogarty, R.
Carr, I.
Poulter, J.
Morgan, J.
Mohamed, M.
Jafri, H.
Raashid, Y.
Meng, N.
Piseth, H.
et al.
Citation: American Journal of Human Genetics, 2011; 89(3):464-473
Publisher: Univ Chicago Press
Issue Date: 2011
ISSN: 0002-9297
Statement of
Kamron Khan, Adam Rudkin... Robert J. Casson... et al.
Abstract: Anterior segment dysgenesis describes a group of heterogeneous developmental disorders that affect the anterior chamber of the eye and are associated with an increased risk of glaucoma. Here, we report homozygous mutations in peroxidasin (PXDN) in two consanguineous Pakistani families with congenital cataract-microcornea with mild to moderate corneal opacity and in a consanguineous Cambodian family with developmental glaucoma and severe corneal opacification. These results highlight the diverse ocular phenotypes caused by PXDN mutations, which are likely due to differences in genetic background and environmental factors. Peroxidasin is an extracellular matrix-associated protein with peroxidase catalytic activity, and we confirmed localization of the protein to the cornea and lens epithelial layers. Our findings imply that peroxidasin is essential for normal development of the anterior chamber of the eye, where it may have a structural role in supporting cornea and lens architecture as well as an enzymatic role as an antioxidant enzyme in protecting the lens, trabecular meshwork, and cornea against oxidative damage.
Keywords: Cornea; Animals; Humans; Mice; Corneal Opacity; Cataract; Glaucoma; Genetic Predisposition to Disease; Peroxidase; Extracellular Matrix Proteins; Microscopy, Fluorescence; Pedigree; Sequence Analysis, DNA; Base Sequence; Mutation; Models, Molecular; Molecular Sequence Data
Rights: ©2011 by The American Society of Human Genetics. All rights reserved.
RMID: 0020112604
DOI: 10.1016/j.ajhg.2011.08.005
Appears in Collections:Opthalmology & Visual Sciences publications

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