Ciliary neurotrophic factor (CNTF)-mediated ganglion cell survival in a rodent model of non-arteritic anterior ischaemic optic neuropathy (NAION)
| Autor: | Steven L. Bernstein, Patricia Langenberg, Yan Guo, Michaela K. Mathews |
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| Rok vydání: | 2014 |
| Předmět: |
Genetically modified mouse
Male Retinal Ganglion Cells medicine.medical_specialty genetic structures Cell Survival Green Fluorescent Proteins Stereology Cell Count Mice Transgenic Ciliary neurotrophic factor Neuroprotection Retinal ganglion Article Cellular and Molecular Neuroscience Mice Ophthalmology medicine Animals Optic Neuropathy Ischemic Ciliary Neurotrophic Factor Retina Arteritis biology business.industry eye diseases Sensory Systems Surgery Ganglion Disease Models Animal medicine.anatomical_structure Neuroprotective Agents Intravitreal Injections biology.protein Optic nerve sense organs business |
| Zdroj: | The British journal of ophthalmology. 99(1) |
| ISSN: | 1468-2079 |
| Popis: | Background Ciliary neurotrophic factor (CNTF) has been shown to protect retinal ganglion cells (RGCs) in traumatic optic nerve injury. We sought to evaluate this neuroprotective effect of CNTF after an ischaemic event using rodent anterior ischaemic optic neuropathy (rAION), a mouse model of non-arteritic anterior ischaemic optic neuropathy (NAION). Methods We induced rAION in Thy1- cyan fluorescent protein (CFP) transgenic mice by exposing the optic nerve to frequency doubled neodymium yttrium aluminium garnet laser pulses following intravenous rose bengal injection. One day after rAION induction, an intravitreal injection of 0.75 μg CNTF or vehicle (sham injection) was given. Animals were euthanised on day 15 after induction, tissues isolated and CFP cells in the RGC layer were counted using stereology in flat-mounted retina. The average number of CFP-positive (CFP+) cells was determined for each study group and the percentages of RGC loss were compared between the different groups. Results Two weeks after rAION induction, significantly more (CFP+) cells were preserved in CNTF-treated eyes than in sham-injected controls. Sham-treated animals showed a 58% loss of CFP+ cells. In contrast, CFP+ cell density in CNTF-treated eyes decreased by only 10%, when compared with untreated control eyes. This increased survival was statistically significant (p Conclusions CNTF exerts a neuroprotective effect in ischaemic optic nerve injury and promotes RGC survival, suggesting that CNTF may be effective in the clinical treatment of human NAION. |
| Databáze: | OpenAIRE |
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