4754 Accumulation Of Lipofuscine In Retina Pigment Epithelium Cells Increases Susceptibility To Oxidative Stress

SciVee ◽  
2012 ◽  
Author(s):  
yu yi lin
Keyword(s):  
Oxidative Stress ◽  
Pigment Epithelium ◽  
Epithelium Cells ◽  
Retina Pigment Epithelium

scholarly journals High-Salt Enhances the Inflammatory Response by Retina Pigment Epithelium Cells following Lipopolysaccharide Stimulation

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Dike Zhang ◽  
Chaokui Wang ◽  
Shuang Cao ◽  
Zi Ye ◽  
Bolin Deng ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Autoimmune Disease ◽  
Osmotic Stress ◽  
P38 Mapk ◽  
Inflammatory Mediators ◽  
Pigment Epithelium ◽  
High Salt ◽  
Stress Control ◽  
Epithelium Cells ◽  
Retina Pigment Epithelium

High-salt has been shown to play a role in the pathogenesis of autoimmune disease. In this study, we investigated the effect of high-salt on the production of inflammatory mediators by ARPE-19 cells and the possible mechanisms involved. ARPE-19 cells were cultured with LPS in DMEM to which extra NaCl had been added (20 mM and 40 mM). NaCl had no influence on the apoptosis and proliferation of ARPE-19. Addition of 40 mM NaCl significantly induced IL-6 and MCP-1 production but had no effect on IL-8 secretion. High mannitol, as an osmotic stress control, did not affect the secretion of inflammatory mediators by ARPE-19 cells indicating that the effect was not mediated by osmolarity. Coculture of ARPE-19 cells with NaCl resulted in significant increases in the phosphorylation of p38 MAPK, Akt, and NF-κB and an upregulation of the transcription factors NFAT5 and SGK1. High-salt significantly promotes IL-6 and MCP-1 production by ARPE-19 cells and is associated with activation of the p38 MAPK, Akt, and NF-κB pathway and NFAT-SGK1 pathways.

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