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- W2078647260 abstract "In the present study we localized glial cell line-derived neurotrophic factor (GDNF), and the high affinity receptor for GDNF (GFRα-1) in the rat retina. We also examined the effects of neurturin on the survival of axotomized retinal ganglion cells (RGCs) and compared neurturin-mediated RGC rescue to GDNF and brain-derived neurotrophic factor (BDNF) neuroprotection. We administered combined injections of neurturin with BDNF or GDNF in order to determine if these factors rescue RGCs by different mechanisms. GDNF immunoreactivity was localized to RGCs, photoreceptors, and retinal pigment epithelial cells. GFRα-1 immunoreactivity was localized to RGCs, Müller cells, and photoreceptors. RGC densities in control retinas decreased from the original value of 2481±121 (RGCs/mm2±S.D.) to 347±100 at 14 days post-axotomy. Neurturin treatment significantly increased RGC survival after axotomy (745±94) similar to GDNF (868±110). BDNF treatment resulted in higher RGC survival (1109±156) than either neurturin or GDNF. Combined administration of neurturin with BDNF had additive effects on the survival of axotomized RGCs (1962±282), similar to combined administration of GDNF and BDNF (1825±269). Combined administration of neurturin and GDNF (1265±178) had an enhanced effect on RGC survival. These results suggest that neurturin, GDNF, and BDNF act independently to rescue injured RGCs. Our results also suggest that RGCs and retinal Müller cells may be responsive to GDNF because they both express GFRα-1. The present findings have implications for the rescue of injured retinal ganglion cells, as well as other CNS neurons that are responsive to neurturin, GDNF, and BDNF, including midbrain dopaminergic neurons and motor neurons." @default.
- W2078647260 created "2016-06-24" @default.
- W2078647260 creator A5052888852 @default.
- W2078647260 creator A5068420533 @default.
- W2078647260 date "2002-03-01" @default.
- W2078647260 modified "2023-09-25" @default.
- W2078647260 title "Neurturin enhances the survival of axotomized retinal ganglion cells in vivo: combined effects with glial cell line-derived neurotrophic factor and brain-derived neurotrophic factor" @default.
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- W2078647260 doi "https://doi.org/10.1016/s0306-4522(01)00557-7" @default.
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