کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4011113 1602580 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The role of astrocytes in optic nerve head fibrosis in glaucoma
ترجمه فارسی عنوان
نقش آستروسیت در فیبروز سر عصب بینایی در گلوکوم
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ایمونولوژی و میکروب شناسی (عمومی)
چکیده انگلیسی


• The structural ONH alterations are found at the lamina cribrosa in glaucoma.
• In glaucoma, disordered depositions of elastic and collagen fibers are observed.
• Astrocytes are reactivated in advanced glaucoma.
• Glaucomatous ECM changes are related to reactivated astrocytes in the LC region.
• ECM changes might be due to a disturbed homeostatic balance of growth factors.

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 IOP are taking part in the retinal ganglion cell loss in glaucoma.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Eye Research - Volume 142, January 2016, Pages 49–55
نویسندگان
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