Abstract：
PURPOSE:Remodeling of the extracellular matrix occurs in the lamina cribrosa in progressed glaucomatous optic nerve damage including disc cupping. We examined immunohistochemical changes in the transforming growth factor (TGF)-beta and platelet-derived growth factor (PDGF) in the optic nerve head in an experimentally induced glaucoma model. METHODS:We used 3 cynomolgus and 2 Japanese monkey eyes. Glaucoma was induced by repeated argon laser photocoagulation of the chamber angle. Eyes were enucleated after disc cupping had formed 3 to 5 months after photocoagulation. The optic nerve head was examined for expression of TGF-beta1, -beta2 and -beta3 and PDGF-A and -B in frozen sections and by the biotin ExtraAvidin-alkali phosphatase method. RESULTS:Normal monkey eyes showed TGF-beta1, -beta2 and -beta3, and PDGF-A and -B in the optic nerve head including the nerve fibers, glial cells, and vascular cells. Glaucomatous eyes showed stronger expression of TGF-beta1 and -beta2 in the glial cells around the lamina cribrosa. The staining intensities for TGF-beta3, PDGF-A and -B were the same as in normal eyes. CONCLUSIONS:Eyes with experimental glaucoma showed higher expression of TGF-beta1 and -beta2 around the lamina cribrosa. These findings may show upregulation of extracellular matrix production as related to remodeling of the lamina cribrosa in glaucoma.
journal_name
Jpn J Ophthalmoljournal_title
Japanese journal of ophthalmologyauthors
Fukuchi T,Ueda J,Hanyu T,Abe H,Sawaguchi Sdoi
10.1016/s0021-5155(01)00414-2keywords:
subject
Has Abstractpub_date
2001-11-01 00:00:00pages
592-9issue
6eissn
0021-5155issn
1613-2246pii
S0021515501004142journal_volume
45pub_type
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