Source:http://linkedlifedata.com/resource/pubmed/id/16197943
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4
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pubmed:dateCreated |
2006-1-27
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pubmed:abstractText |
To examine the expression of phosphorylated c-Jun N-terminal kinase (JNK) in cells in the retinal ganglion cell layer of glaucoma, intraocular pressure (IOP) of adult Wistar rats was elevated unilaterally by repeated trabecular argon laser photocoagulation 5 days after intracameral injection of India ink. Animals were euthanized after 3 days, and 1, 2, and 5 weeks of IOP elevation. Immunohistochemistry with specific antibodies against phosphorylated JNK was performed on retinas. Retrograde labeling using Fluorogold and fluorescence immunohistochemistry was performed on retinas 5 weeks after IOP elevation. TdT-mediated biotin-dUTP nick end labeling (TUNEL) was performed on the retinal sections to determine the rate of cell death. There was increased IOP (52.3%) from 3 days to 5 weeks after repeated trabecular laser photocoagulation. Mean number of TUNEL-positive cells in the retinal ganglion cell layer of eyes with experimental glaucoma was 0.43, 0.36, 0.57, and 0.19 per retinal section at 3 days, and 1, 2 and 5 weeks, respectively. No TUNEL-positive cells were noted in controls. In parallel to TUNEL, significantly increased numbers of phosphorylated JNK-labeled cells in the retinal ganglion cell layer were noted at 3 days (9.95 versus 4.15; P=0.005), 1 week (7.65 versus 4.00; P=0.006), 2 weeks (9.13 versus 4.48; P=0.032), and 5 weeks (8.06 versus 4.96; P=0.017) of IOP elevation when compared with contralateral control eyes. Fluorogold labeled RGCs were co-localized with increased phosphorylated JNK immunoreactivity. Some TUNEL-positive cells were phosphorylated JNK immuno-positive. Phosphorylation of JNK occurs in experimental glaucoma and may play a role in retinal ganglion cell death.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Apr
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pubmed:issn |
0014-4835
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
82
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
576-82
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pubmed:dateRevised |
2009-11-19
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pubmed:meshHeading |
pubmed-meshheading:16197943-Animals,
pubmed-meshheading:16197943-Cell Death,
pubmed-meshheading:16197943-Disease Models, Animal,
pubmed-meshheading:16197943-Glaucoma,
pubmed-meshheading:16197943-Immunohistochemistry,
pubmed-meshheading:16197943-In Situ Nick-End Labeling,
pubmed-meshheading:16197943-Intraocular Pressure,
pubmed-meshheading:16197943-JNK Mitogen-Activated Protein Kinases,
pubmed-meshheading:16197943-Phosphorylation,
pubmed-meshheading:16197943-Rats,
pubmed-meshheading:16197943-Rats, Wistar,
pubmed-meshheading:16197943-Retinal Ganglion Cells
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pubmed:year |
2006
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pubmed:articleTitle |
Expression of phosphorylated c-Jun N-terminal protein kinase (JNK) in experimental glaucoma in rats.
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pubmed:affiliation |
Department of Ophthalmology, Jules Stein Eye Institute, David Geffen School of Medicine at University of California Los Angeles, Room B-146, 100 Stein Plaza, Los Angeles, CA 90095-7000, USA. kwong@jsei.ucla.edu
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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