Schneider, Magdalena and Fuchshofer, Rudolf (2016) The role of astrocytes in optic nerve head fibrosis in glaucoma. EXPERIMENTAL EYE RESEARCH, 142. pp. 49-55. ISSN 0014-4835, 1096-0007
Full text not available from this repository. (Request a copy)Abstract
Glaucoma is defined as a progressive optic neuropathy and is characterized by an irreversible loss of retinal ganglion cells. The main risk factor to develop glaucoma is an increased intraocular pressure (IOP). During the course of glaucoma structural changes in the optic nerve head (ONH) take place which lead to the characteristic excavation or cupping of the ONH. In this review we will focus on mechanisms and processes involved in structural alterations of the extracellular matrix in the lamina cribrosa (LC) of the ONH, which are associated with astrocytes. In glaucoma, a disordered deposition of elastic and collagen fibers and a typical pronounced thickening of the connective tissue septae surrounding the nerve fibers can be observed in the LC region. The remodeling process of the LC and the loss of ON axons are associated with a conversion of astrocytes from quiescent to a reactivated state. The extracellular matrix changes in the LC are thought to be due to a disturbed homeostatic balance of growth factors and the reactivated astrocytes are part of this process. Reactivated astrocytes, remodeling of the ECM within the LC and an elevated lOP are taking part in the retinal ganglion cell loss in glaucoma. (C) 2015 Elsevier Ltd. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | OPEN-ANGLE GLAUCOMA; TISSUE GROWTH-FACTOR; ELEVATED INTRAOCULAR-PRESSURE; EXTRACELLULAR-MATRIX PROTEINS; OCULAR HYPERTENSION TREATMENT; BONE MORPHOGENETIC PROTEINS; CILIARY NEUROTROPHIC FACTOR; HUMAN TRABECULAR MESHWORK; NORMAL-TENSION GLAUCOMA; RETINAL GANGLION-CELLS; Astrocytes; Glaucoma; Optic nerve head; Fibrosis; Growth factors; Lamina cribrosa |
| Subjects: | 500 Science > 570 Life sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Anatomie > Lehrstuhl für Humananatomie und Embryologie |
| Depositing User: | Petra Gürster |
| Date Deposited: | 01 Mar 2019 12:36 |
| Last Modified: | 03 Sep 2020 09:28 |
| URI: | https://pred.uni-regensburg.de/id/eprint/2196 |
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