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Miscellaneous (41)

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Abstract #76855 Published in IGR 19-3

A porcine ex vivo model of pigmentary glaucoma

Dang Y; Waxman S; Wang C; Loewen RT; Sun M; Loewen NA
Scientific reports 2018; 8: 5468

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Pigment dispersion can lead to pigmentary glaucoma, a poorly understood condition of younger myopic eyes with fluctuating high intraocular pressure. It has been difficult to investigate its pathogenesis without a model similar to human eyes in size and behavior. Here we present a porcine ex vivo model that recreates several features of pigmentary glaucoma, including intraocular hypertension, accumulation of pigment in the trabecular meshwork, and declining phagocytosis. We found that trabecular meshwork cells regulate outflow, form actin stress fibers, and have a decreased phagocytic activity. Gene expression microarrays and a pathway analysis of TM monolayers as well as ex vivo anterior segment perfusion cultures indicated that RhoA plays a central role in regulating the cytoskeleton, motility, and phagocytosis in the trabecular meshwork, providing new insights and targets to investigate in pigmentary glaucoma.

Department of Ophthalmology, School of Medicine, University of Pittsburgh, Pittsburgh, United States of America.

Full article

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Classification:

9.4.3.1 Pigmentary glaucoma (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders > 9.4.3 Glaucomas associated with disorders of the iris and ciliary body)
5.3 Other (Part of: 5 Experimental glaucoma; animal models)

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