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1 General aspects (0)   1.1 Epidemiology (10)   1.2 Population genetics (0)   1.3 Pathogenesis (2)   1.4 Quality of life (3)   1.5 Glaucomas as cause of blindness (2)   1.6 Prevention and screening (7) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (9)   2.2 Cornea (20)   2.3 Sclera (6)   2.4 Anterior chamber angle (4)   2.5 Meshwork (0)     2.5.1 Trabecular meshwork (11)     2.5.2 Schlemms canal (1)     2.5.3 Scleral outlet channels (0)   2.6 Aqueous humor dynamics (0)     2.6.1 Production (1)     2.6.2 Outflow (0)       2.6.2.1 Trabecular meshwork (1)       2.6.2.2 Uveoscleral (0)     2.6.3 Compostion (1)   2.7 Episcleral veins and venous pressure (0)   2.8 Iris (9)   2.9 Ciliary body (0)   2.10 Lens (2)   2.11 Vitreous body (0)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (3)   2.13 Retina and retinal nerve fibre layer (20)   2.14 Optic disc (23)   2.15 Optic nerve (5)   2.16 Chiasma and retrochiasmal central nervous system (18)   2.17 Stem cells (3)   2.20 Other (0) 3 Laboratory methods (0)   3.1 Microscopy (2)   3.2 Electron microscopy (0)   3.3 Immunohistochemistry (0)   3.4 Molecular genetics (0)     3.4.1 Linkage studies (0)     3.4.2 Gene studies (22)   3.5 Molecular biology incl. 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    12.8.1 Without tube implant (14)     12.8.2 With tube implant or other drainage devices (28)     12.8.3 Non-perforating (4)     12.8.4 Using laser (0)     12.8.5 Other (0)     12.8.10 Woundhealing antifibrosis (13)     12.8.11 Complications, endophthalmitis (17)   12.9 Trabeculotomy, goniotomy (7)   12.10 Cyclodestruction (3)   12.11 Cyclodialysis (1)   12.12 Cataract extraction (0)     12.12.1 Intracapsular (0)     12.12.2 Extracapsular (0)     12.12.3 Phacoemulsification (3)   12.14 Combined cataract extraction and glaucoma surgery (0)     12.14.1 Intracapsular (0)     12.14.2 Extracapsular (0)     12.14.3 Phacoemulsification (6)   12.15 Capsulotomy (0)   12.16 Vitrectomy (0)   12.17 Anesthesia (0)   12.20 Other (0) 13 Therapeutic prognosis and outcome (0)   13.1 Prognostic factors (0)   13.2 Outcome (0)     13.2.1 IOP (1)     13.2.2 Visual field (0)       13.2.2.1 Progression (1)       13.2.2.2 Improvement (0)     13.2.3 Other (0) 14 Costing studies; pharmacoeconomics (7) 15 Miscellaneous (18)

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Abstract #54046 Published in IGR 15-2

Lgr4 in ocular development and glaucoma

Siwko S; Lai L; Weng J; Liu M
Journal of Ophthalmology 2013; 2013: 987494

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The leucine-rich repeat-containing G protein-coupled receptor 4 (LGR4, also called GPR48) plays a key role in multiple developmental processes, and mice lacking Lgr4 display anterior segment dysgenesis leading to early-onset glaucomatous retinal ganglion cell loss as well as defective eyelid formation. This paper will review Lgr4 signaling and its regulation of the Axenfeld-Rieger syndrome gene Pitx2, a crucial developmental transcription factor. In addition, Wnt signaling plays an important role in eye development, with Norrin functioning to activate the Wnt receptor Frizzled 4 required for proper retinal vascularization. Recent discoveries identifying Lgr4 as a receptor for Norrin highlight the potential for Lgr4 function in retinal vascularization. Finally, several unanswered questions impeding a full understanding of Lgr4 in glaucoma are considered as avenues for further research.

Center for Cancer and Stem Cell Biology, Institute for Biosciences and Technology, Texas A & M Health Science Center, Houston, TX 77030, USA.

Full article

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Classification:

3.9 Pathophysiology (Part of: 3 Laboratory methods)
3.6 Cellular biology (Part of: 3 Laboratory methods)
5.1 Rodent (Part of: 5 Experimental glaucoma; animal models)

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