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Abstract #49314 Published in IGR 14-1
Reduced Axonal Transport and Increased Excitotoxic Retinal Ganglion Cell Degeneration in Mice Transgenic for Human Mutant P301S Tau
Bull ND; Guidi A; Goedert M; Martin KR; Spillantini MGPLoS ONE 2012; 7: e34724
The effects of tau hyperphosphorylation and aggregation on axonal transport were investigated in the optic nerve of mice transgenic for human mutant P301S tau. Transport was examined using cholera toxin B tracing. Retrograde transport was reduced in transgenic mice at 3 and 5 months of age, when compared to C57/Bl6 control mice. Anterograde axonal transport was also reduced in 3-month-old transgenic mice. Mild excitotoxic injury of retinal ganglion cells resulted in greater nerve cell loss in retinas from 3- and 5-month old P301S transgenic mice, when compared to controls. In conjunction with the detection of abnormal tau in the optic nerve in human and experimental glaucoma, the present findings suggest that tau hyperphosphorylation and aggregation may constitute targets for neuroprotective therapies in glaucoma as well as tauopathies.
Cambridge Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Cambridge, Cambridgeshire, UK.
Full articleClassification:
5.1 Rodent (Part of: 5 Experimental glaucoma; animal models)
3.9 Pathophysiology (Part of: 3 Laboratory methods)
3.6 Cellular biology (Part of: 3 Laboratory methods)
