Abstract
Glia play important roles in neural function, including but not limited to amino acid recycling, ion homeostasis, glucose metabolism, and waste removal. During retinal degeneration and subsequent retinal remodeling, Müller cells (MCs) are the first cells to show metabolic and morphological alterations in response to stress. Metabolic alterations in MCs chaotically progress in retina undergoing photoreceptor degeneration; however, what relationship these alterations have with neuronal stress, synapse maintenance, or glia-glia interactions is currently unknown. The work described here reconstructs a MC from a pathoconnectome of early retinal remodeling retinal pathoconnectome 1 (RPC1) and explores relationships between MC structural and metabolic phenotypes in the context of neighboring neurons and glia. Here we find variations in intensity of osmication inter- and intracellularly, variation in small molecule metabolic content of MCs, as well as morphological alterations of glial endfeet. RPC1 provides a framework to analyze these relationships in early retinal remodeling through ultrastructural reconstructions of both neurons and glia. These reconstructions, informed by quantitative metabolite labeling via computational molecular phenotyping (CMP), allow us to evaluate neural-glial interactions in early retinal degeneration with unprecedented resolution and sensitivity.
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Change history
10 April 2020
The title of the chapter is “Melatonin as the Possible Link Between Age-Related Retinal Degeneration and the Disrupted Circadian Rhythm in Elderly” but degeneration was incorrectly published as regeneration. Now this has been corrected to degeneration.
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Acknowledgments
This work was supported by the National Institutes of Health R01 EY015128, RO1 EY028927, P30 EY014800, T32 EY024234; and an Unrestricted Research Grant from Research to Prevent Blindness, New York, NY to the Department of Ophthalmology & Visual Sciences, University of Utah.
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Pfeiffer, R.L. et al. (2019). Pathoconnectome Analysis of Müller Cells in Early Retinal Remodeling. In: Bowes Rickman, C., Grimm, C., Anderson, R., Ash, J., LaVail, M., Hollyfield, J. (eds) Retinal Degenerative Diseases. Advances in Experimental Medicine and Biology, vol 1185. Springer, Cham. https://doi.org/10.1007/978-3-030-27378-1_60
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DOI: https://doi.org/10.1007/978-3-030-27378-1_60
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