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Ultrastructural Abnormalities of the Trabecular Meshwork Extracellular Matrix in Cyp1b1-Deficient Mice

Cytochrome P450 1B1 (CYP1B1) is highly expressed in human and murine ocular tissues during development. Mutations in this gene are implicated in the development of primary congenital glaucoma (PCG) in humans. Mice deficient in Cyp1b1 (Cyp1b1–/– ) present developmental abnormalities similar to human...

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Published in:Veterinary pathology 2015-03, Vol.52 (2), p.397-403
Main Authors: Teixeira, L. B. C., Zhao, Y., Dubielzig, R. R., Sorenson, C. M., Sheibani, N.
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cited_by cdi_FETCH-LOGICAL-c500t-5c90e25d9202cbecc7f8e52495dcc8f91d5a8f1514ddba1fb131e83d2b0756a13
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container_title Veterinary pathology
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creator Teixeira, L. B. C.
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description Cytochrome P450 1B1 (CYP1B1) is highly expressed in human and murine ocular tissues during development. Mutations in this gene are implicated in the development of primary congenital glaucoma (PCG) in humans. Mice deficient in Cyp1b1 (Cyp1b1–/– ) present developmental abnormalities similar to human primary congenital glaucoma. The present work describes the ultrastructural morphology of the iridocorneal angle of 21 eyes from 1-week-old to 8-month-old Cyp1b1–/– mice. Morphometric and semiquantitative analysis of the data revealed that 3-week-old Cyp1b1–/– mice present a significantly (P < .005) decreased amount of trabecular meshwork (TM) collagen and higher TM endothelial cell and collagen lesion scores (P < .005) than age-matched controls. Collagen loss and lesion scores were progressively increased in older animals, with 8-month-old animals presenting severe atrophy of the TM. Our findings advance the understanding of the effects of CYP1B1 mutations in TM development and primary congenital glaucoma, as well as suggest a link between TM morphologic alterations and increased intraocular pressure.
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source Sage Journals Online
subjects Animals
Cytochrome P-450 CYP1B1 - deficiency
Cytochrome P-450 CYP1B1 - genetics
Cytochrome P-450 CYP1B1 - metabolism
Disease Models, Animal
Extracellular Matrix - metabolism
Female
Glaucoma - congenital
Glaucoma - pathology
Humans
Mice
Mice, Knockout
Mutation
Oxidative Stress
Trabecular Meshwork - ultrastructure
title Ultrastructural Abnormalities of the Trabecular Meshwork Extracellular Matrix in Cyp1b1-Deficient Mice
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