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Articles 1 - 3 of 3
Full-Text Articles in Ophthalmology
The Proliferation Of Porcine Retinal Ganglion Cells Using Pnu 282987, Rebecca Karl, David Linn
The Proliferation Of Porcine Retinal Ganglion Cells Using Pnu 282987, Rebecca Karl, David Linn
Honors Projects
The retinal ganglion cells (RGCs) from porcine eyes were extracted to work towards a potential therapy for glaucoma. There is not a known cause of glaucoma or the apoptosis of RGCs that cause the eventual blindness associated with glaucoma. The goal of this protocol is to protect the RGCs from dying by adding a nicotinic acetylcholine receptor activator to induce neuronal proliferation and protect against glutamate-induced excitotoxicity. PNU 282987 was used as the nicotinic acetylcholine receptor activator due to its neuroprotective properties. We hypothesized that we would observe the proliferation of RGCs (associated with increased cell numbers) with varying levels …
Loss Of Displaced Starburst Amacrine Cells In A Rat Glaucoma Model, C A. Cooley-Themm, Q Ameel, David M. Linn, Cindy L. Linn
Loss Of Displaced Starburst Amacrine Cells In A Rat Glaucoma Model, C A. Cooley-Themm, Q Ameel, David M. Linn, Cindy L. Linn
Peer Reviewed Articles
Acetylcholine (ACh) release by starburst amacrine cells (SACs) has been implicated in the production of retinal waves during early retinal development. Inhibitory gamma-aminobutyric acid (GABA) release by SACs is known to be involved in directional selectivity in the mature retina. However, the role of SAC release of ACh in the adult developed mammalian retina is not entirely understood. Some evidence suggests a neuroprotective effect on retinal ganglion cells (RGCs) acting through alpha7 nicotinic acetylcholine receptors (nAChRs) present in RGCs. If ACh released by SACs is neuroprotective to RGCs, it would follow that this cholinergic transmission might be compromised in glaucoma …
Prevention Of Glaucoma-Induced Retinal Ganglion Cell Loss Using Alpha7 Nachr Agonists, P J. Birkholz, C A. Gossman, M K. Webster, David M. Linn, Cindy L. Linn
Prevention Of Glaucoma-Induced Retinal Ganglion Cell Loss Using Alpha7 Nachr Agonists, P J. Birkholz, C A. Gossman, M K. Webster, David M. Linn, Cindy L. Linn
Peer Reviewed Articles
In this study, the neuroprotective effect of various nicotinic alpha7 acetylcholine receptor agonists in an in-vivo model of glaucoma using adult Long Evans rats was analyzed. Glaucoma-like conditions were induced in the eyes of Long Evans rats after injection of hypertonic saline into episcleral veins to create scar tissue and increase the animal’s intraocular pressure. This procedure produced significant loss of retinal ganglion cells within one month and was associated with an increase of intraocular pressure. Using this model system, various alpha7 nicotinic acetylcholine receptor (a7 nAChR) agonists were applied at different doses as eye drops to the right eye …