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Published in: Acta Neuropathologica Communications 1/2018

Open Access 01-12-2018 | Research

Degeneration of human photosensitive retinal ganglion cells may explain sleep and circadian rhythms disorders in Parkinson’s disease

Authors: Isabel Ortuño-Lizarán, Gema Esquiva, Thomas G. Beach, Geidy E. Serrano, Charles H. Adler, Pedro Lax, Nicolás Cuenca

Published in: Acta Neuropathologica Communications | Issue 1/2018

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Abstract

Parkinson’s disease (PD) patients often suffer from non-motor symptoms like sleep dysregulation, mood disturbances or circadian rhythms dysfunction. The melanopsin-containing retinal ganglion cells are involved in the control and regulation of these processes and may be affected in PD, as other retinal and visual implications have been described in the disease. Number and morphology of human melanopsin-containing retinal ganglion cells were evaluated by immunohistochemistry in eyes from donors with PD or control. The Sholl number of intersections, the number of branches, and the number of terminals from the Sholl analysis were significantly reduced in PD melanopsin ganglion cells. Also, the density of these cells significantly decreased in PD compared to controls. Degeneration and impairment of the retinal melanopsin system may affect to sleep and circadian dysfunction reported in PD pathology, and its protection or stimulation may lead to better disease prospect and global quality of life of patients.
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Metadata
Title
Degeneration of human photosensitive retinal ganglion cells may explain sleep and circadian rhythms disorders in Parkinson’s disease
Authors
Isabel Ortuño-Lizarán
Gema Esquiva
Thomas G. Beach
Geidy E. Serrano
Charles H. Adler
Pedro Lax
Nicolás Cuenca
Publication date
01-12-2018
Publisher
BioMed Central
Published in
Acta Neuropathologica Communications / Issue 1/2018
Electronic ISSN: 2051-5960
DOI
https://doi.org/10.1186/s40478-018-0596-z

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