Abstract Title:

Green tea polyphenols attenuating ultraviolet B-induced damage to human retinal pigment epithelial cells in vitro.

Abstract Source:

Invest Ophthalmol Vis Sci. 2010 Aug 11. Epub 2010 Aug 11. PMID: 20702817

Abstract Author(s):

Jing-Yi Xu, Liang-Yu Wu, Xin-Qiang Zheng, Jian-Liang Lu, Ming-Yan Wu, Yue-Rong Liang

Article Affiliation:

Tea Research Institute, Zhejiang University, Hangzhou, China.

Abstract:

PURPOSE. To examine the protective effect of green tea polyphenols against ultraviolet B (UVB) induced damage to retinal pigment epithelium (RPE) cells. METHODS. Green tea polyphenols (GTP) was used to treat RPE cells before or after exposure to UVB. Viability of RPE cells was tested by 3,(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium bromide (MTT) assay. Survivin gene expression was examined by Real-time PCR analysis. Ultrastructure of RPE cells was exmanined by transmission electron microscopy. RESULTS. GTP effectively suppressed the decrease in viability of the UVB stressed RPE cells and the UVB suppression of Survivin gene expression level. GTP alleviated mitochondria dysfunction and DNA fragmentation induced by UVB. CONCLUSIONS. GTP protected RPE cells from UVB damage through its increase in the Survivin gene expression and its attenuation of mitochondria dysfunction and DNA fragmentation. GTP is a potential candidate to be further developed as a chemoprotective factor for the primary prevention of age-related eye diseases such as age-related macular degeneration (AMD).

Study Type : In Vitro Study

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