Journal Article10.1152/JN.00144.2007
Emergence of Sustained Spontaneous Hyperactivity and Temporary Preservation of off Responses in Ganglion Cells of the Retinal Degeneration (rd1) Mouse
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TL;DR: Striking alterations occur in inner retinal physiology as retinal degeneration progresses in the rd1 mouse, and such features should be considered in designing more effective treatments for these disorders.
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Abstract: Complex alterations in the anatomy of outer retinal pathways accompany photoreceptor degeneration in the rd1 mouse model of retinitis pigmentosa, whereas inner retinal neurons appear relatively pre...
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Citations
Differential Alterations in the Expression of Neurotransmitter Receptors in Inner Retina following Loss of Photoreceptors in rd1 Mouse
Prerna Srivastava,Sumit K. Sinha-Mahapatra,Abhinaba Ghosh,Ipsit Srivastava,Narender K. Dhingra +4 more
TL;DR: The number of GABAa-immunoreactive somas in the inner nuclear layer of rd1 mouse retina was significantly higher than in wild-type, and these findings provide further insights into neurochemical remodeling in theinner retina of r d1 mouse, and how it might lead to oscillatory activity in RGCs.
Rhythmic ganglion cell activity in bleached and blind adult mouse retinas.
TL;DR: Oscillatory activity in healthy retinas shares many features with the functional phenotype detected in rd10 retinas, and quantitative physiological differences advance the understanding of the degeneration process and may guide future rescue strategies.
The response of retinal neurons to high-frequency stimulation
TL;DR: The response differences between cell types suggest some forms of preferential activation may be possible, and further testing is warranted, and the scope of the response differences found here suggests activation mechanisms that are more complex than those described in previous studies.
Cell type-specific changes in retinal ganglion cell function induced by rod death and cone reorganization in rats.
TL;DR: The extent of functional remodeling in the retina following rod death but before cone loss is identified, and new potential challenges to restoring normal vision by replacing lost rod photoreceptors are indicated.
Developmental time course distinguishes changes in spontaneous and light-evoked retinal ganglion cell activity in rd1 and rd10 mice.
TL;DR: Compared spontaneous and light-evoked activity among retinal ganglion cells in rd1 and rd10 mice, strains with closely related retinal disease, raises hope that visual function might be preserved or restored despiteganglion cell hyperactivity seen in inherited retinal degenerations, particularly if treatment or manipulation of early developmental plasticity were to be timed appropriately.
References
Retinal degeneration in the rd mouse is caused by a defect in the β subunit of rod cGMP-phosphodiesterase
Cathy Bowes,Tiansen Li,Michael Danciger,Michael Danciger,Leslie C. Baxter,Meredithe L. Applebury,Debora B. Farber +6 more
TL;DR: Evidence is presented that the candidate cDNA is the murine homologue of bovine phosphodiesterase β cDNA and that the mouse rd locus encodes the rod photoreceptor cGMP-phosphodiesterases β subunit.
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Neural remodeling in retinal degeneration.
TL;DR: Retinal remodeling is not plasticity, but represents the invocation of mechanisms resembling developmental and CNS plasticities and together, neuronal remodeling and the formation of the glial seal may abrogate many cellular and bionic rescue strategies.
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Retinal degeneration mutants in the mouse.
TL;DR: The cpfl1 mutation is the first naturally-arising mutation in mice to cause cone-specific photoreceptor function loss and may provide a model for congenital achromatopsia in humans.
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Retinal Prosthesis for the Blind
Eyal Margalit,Mauricio Maia,James D. Weiland,Robert J. Greenberg,Gildo Y. Fujii,Gustavo Torres,Duke V. Piyathaisere,Thomas M. O’Hearn,Wentai Liu,Gianluca Lazzi,Gislin Dagnelie,Dean A. Scribner,Eugene de Juan,Mark S. Humayun +13 more
TL;DR: Cortical prostheses will be described only because of their direct effect on the concept and technical development of the other prostheses, and this will be done in a more general and historic perspective.
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Connexin36 Is Essential for Transmission of Rod-Mediated Visual Signals in the Mammalian Retina
TL;DR: Data presented represent direct proof that electrical synapses are critical for the propagation of rod signals across the mammalian retina, and they demonstrate the existence of multiple rod pathways, each of which is dependent on electricalsynapses.
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