Neuroprotective effect of epigallocatechin-3-gallate against N-methyl-D-aspartate-induced excitotoxicity in the adult rat retina
Abstract. Purpose: Epigallocatechin-3-gallate (EGCG), the major polyphenol of green tea, has been suggested to reduce glutamate excitotoxicity. We therefore investigated the potentially protective effects of EGCG against N-methyl-d-aspartate (NMDA)-induced excitotoxicity in the retina. Methods: Fema...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2012
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| In: |
Acta ophthalmologica
Year: 2012, Volume: 90, Issue: 8, Pages: e609-e615 |
| ISSN: | 1755-3768 |
| DOI: | 10.1111/j.1755-3768.2012.02502.x |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1111/j.1755-3768.2012.02502.x Verlag, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1755-3768.2012.02502.x 
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| Author Notes: | Fei Chen, Libin Jiang, Ceying Shen, Hongfei Wan, Liang Xu, Ningli Wang, Jost B. Jonas |
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| 245 | 1 | 0 | |a Neuroprotective effect of epigallocatechin-3-gallate against N-methyl-D-aspartate-induced excitotoxicity in the adult rat retina |c Fei Chen, Libin Jiang, Ceying Shen, Hongfei Wan, Liang Xu, Ningli Wang, Jost B. Jonas |
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| 520 | |a Abstract. Purpose: Epigallocatechin-3-gallate (EGCG), the major polyphenol of green tea, has been suggested to reduce glutamate excitotoxicity. We therefore investigated the potentially protective effects of EGCG against N-methyl-d-aspartate (NMDA)-induced excitotoxicity in the retina. Methods: Female Wistar rats (n = 171) were divided into a normal control group (n = 9); saline control group with intravitreal saline injections (n = 54); NMDA control group with an intravitreal NMDA injection and intraperitoneal saline injections (n = 54); and NMDA study group (n = 54) receiving an intravitreal NMDA injection plus intraperitoneal EGCG (25 mg/kg) injections. Starting at 2 days prior to the intravitreal NMDA injection, the intraperitoneal injections were performed daily for the whole study period. At 12 hr, 1, 2, 3 days, 1 and 2 weeks after the intravitreal NMDA injection, the animals were killed. We counted the neurons in the retinal ganglion cell layer (GCL) on histological sections, measured the thickness of Thy-1 immunoreactivity and assessed the expression of Thy-1 mRNA by real-time polymerase chain reaction. Results: At all time-points, GCL cell density, thickness of Thy-1 immunoreactivity and expression of Thy-1 mRNA were significantly (all p < 0.05) lower in the NMDA control group than in the NMDA study group, in which the parameters were significantly (all p < 0.05) lower than in the saline control group and the normal control group. In both groups with an intravitreal NMDA injection, GCL cell density, thickness of Thy-1 immunoreactivity and expression of Thy-1 mRNA decreased significantly with increasing follow-up time. Conclusions: Intraperitoneal application of EGCG resulted in a significantly less marked NMDA-associated loss of retinal ganglion cells. | ||
| 650 | 4 | |a epigallocatechin-3-gallate | |
| 650 | 4 | |a excitotoxicity | |
| 650 | 4 | |a glaucoma | |
| 650 | 4 | |a N-methyl-d-aspartate | |
| 650 | 4 | |a neuroprotection | |
| 650 | 4 | |a optic nerve | |
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