期刊
NEUROCHEMICAL RESEARCH
卷 36, 期 11, 页码 1955-1961出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11064-011-0518-y
关键词
Ocular hypertension; Nogo-A; Myelin-associated glycoprotein; Oligodendrocyte myelin glycoprotein; Retina
资金
- University of Hong Kong
- NSFC [30801272, 81071030]
- Science and Technology Foundation of Guangdong Province, China [2008B030301090, 2010B031600089]
- RFDP [200805581160]
- Fundamental Research Funds for the Central Universities [09ykpy25, 09ykpy31]
- National Basic Research Program of China (973 Program) [2011CB707501]
Nogo-A, a major myelin inhibitory protein, inhibits axon growth and synaptic function in the central nervous system. Glaucoma is a progressive neuropathy as a result of retinal ganglion cell (RGC) death. Synaptic degeneration is thought to be an early pathology of neurodegeneration in glaucoma and precedes RGC loss. Here experimental ocular hypertension model was induced in adult rats with laser coagulation of the episcleral and limbal veins. The expression of Nogo-A, myelin-associated glycoprotein (MAG) and oligodendrocyte myelin glycoprotein (OMgp) in the retina was investigated using immunohistochemistry and Western blotting. We found that Nogo-A was expressed in the RGCs and upregulated after the induction of ocular hypertension. OMgp was only expressed in the inner plexiform layer. There was no MAG expression in the retina. Our data provided, for the first time, the expression patterns of three myelin proteins in the adult retina and suggested an important role of Nogo-A in the RGC death and synaptic degeneration in glaucoma.
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