PURPOSE: We investigated the progressive nature of neurodegenerative structural changes following injury to retinal ganglion cell (RGC) axons using quantifiable and noninvasive in vivo imaging techniques. METHODS: To track degenerative RGC progression in retinas following optic nerve crush (ONC) injury, spectral-domain optical coherence tomography (SD-OCT) was used to quantitate the RGC nerve fiber layer (NFL) density. The RGC soma cell density (RCD) was measured by confocal scanning laser ophthalmoscopy (CSLO). The RCD counts were performed using blood vessels as landmarks to anatomically track defined progressive changes in enhanced yellow fluorescent fusion protein (EYFP)-labeled RGCs. RESULTS: Following ONC injury, 68% of the observed decrease in RCD measured by CSLO and 54% of the NFL thickness obtained by SD-OCT imaging (N=4 retinas) occurred within the first week. Between days 7 and 14, an additional 22% decrease in RCD was concurrent with a 31% decrease in overall NFL thickness. Finally, between days 14 and 21, an additional 10% decrease in RCD measured in vivo by CSLO and 15% decrease in NFL thickness by SD-OCT was observed. CONCLUSIONS: Our data suggest that in vivo CSLO imaging of EYFP-RGC expression and SD-OCT measured NFL thickness are fast and reliable methods that longitudinally track neurodegenerative progression following ONC injury. Neurodegenerative changes in NFL thickness measured by SD-OCT imaging have the same overall trajectory as those observed by CSLO for RCD; however, changes in NFL thickness initially lag behind in vivo RGC soma counts with a slower decline in overall measurable change. Copyright 2014 The Association for Research in Vision and Ophthalmology, Inc.
PURPOSE: We investigated the progressive nature of neurodegenerative structural changes following injury to retinal ganglion cell (RGC) axons using quantifiable and noninvasive in vivo imaging techniques. METHODS: To track degenerative RGC progression in retinas following optic nerve crush (ONC) injury, spectral-domain optical coherence tomography (SD-OCT) was used to quantitate the RGC nerve fiber layer (NFL) density. The RGC soma cell density (RCD) was measured by confocal scanning laser ophthalmoscopy (CSLO). The RCD counts were performed using blood vessels as landmarks to anatomically track defined progressive changes in enhanced yellow fluorescent fusion protein (EYFP)-labeled RGCs. RESULTS: Following ONC injury, 68% of the observed decrease in RCD measured by CSLO and 54% of the NFL thickness obtained by SD-OCT imaging (N=4 retinas) occurred within the first week. Between days 7 and 14, an additional 22% decrease in RCD was concurrent with a 31% decrease in overall NFL thickness. Finally, between days 14 and 21, an additional 10% decrease in RCD measured in vivo by CSLO and 15% decrease in NFL thickness by SD-OCT was observed. CONCLUSIONS: Our data suggest that in vivo CSLO imaging of EYFP-RGC expression and SD-OCT measured NFL thickness are fast and reliable methods that longitudinally track neurodegenerative progression following ONC injury. Neurodegenerative changes in NFL thickness measured by SD-OCT imaging have the same overall trajectory as those observed by CSLO for RCD; however, changes in NFL thickness initially lag behind in vivo RGC soma counts with a slower decline in overall measurable change. Copyright 2014 The Association for Research in Vision and Ophthalmology, Inc.
Authors: Michael G Anderson; Richard S Smith; Norman L Hawes; Adriana Zabaleta; Bo Chang; Janey L Wiggs; Simon W M John Journal: Nat Genet Date: 2001-12-17 Impact factor: 38.330
Authors: H A Quigley; R W Nickells; L A Kerrigan; M E Pease; D J Thibault; D J Zack Journal: Invest Ophthalmol Vis Sci Date: 1995-04 Impact factor: 4.799
Authors: G Feng; R H Mellor; M Bernstein; C Keller-Peck; Q T Nguyen; M Wallace; J M Nerbonne; J W Lichtman; J R Sanes Journal: Neuron Date: 2000-10 Impact factor: 17.173
Authors: Balwantray C Chauhan; Kelly T Stevens; Julie M Levesque; Andrea C Nuschke; Glen P Sharpe; Neil O'Leary; Michele L Archibald; Xu Wang Journal: PLoS One Date: 2012-06-29 Impact factor: 3.240
Authors: Weiye Song; Sipei Fu; Shangshang Song; Sui Zhang; Lei Zhang; Steven Ness; Manishi Desai; Ji Yi Journal: Neurophotonics Date: 2019-07-09 Impact factor: 3.593
Authors: Adeleh Yarmohammadi; Linda M Zangwill; Alberto Diniz-Filho; Min Hee Suh; Siamak Yousefi; Luke J Saunders; Akram Belghith; Patricia Isabel C Manalastas; Felipe A Medeiros; Robert N Weinreb Journal: Ophthalmology Date: 2016-10-07 Impact factor: 12.079
Authors: Peter J Snyder; Jessica Alber; Clemens Alt; Lisa J Bain; Brett E Bouma; Femke H Bouwman; Delia Cabrera DeBuc; Melanie C W Campbell; Maria C Carrillo; Emily Y Chew; M Francesca Cordeiro; Michael R Dueñas; Brian M Fernández; Maya Koronyo-Hamaoui; Chiara La Morgia; Roxana O' Carare; Srinivas R Sadda; Peter van Wijngaarden; Heather M Snyder Journal: Alzheimers Dement Date: 2020-10-08 Impact factor: 21.566