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- W2413246318 abstract "Diabetic retinopathy (DR), the main cause of blindness among diabetic patients, affects both neuronal and vascular cells of the retina. Studies show that neuronal cell death begins after 4 weeks of diabetes and could be related with an increase in oxidative stress. System xc− is a glutamate/cystine exchanger, formed by a catalytic subunit called xCT and a regulatory subunit 4F2hc, whose activity is crucial to the synthesis of glutathione, which is a key antioxidant molecule for cells. Although some studies have shown that glutamate transport mediated by excitatory amino acid transporters (EAATs) in diabetic rats is downregulated, there are no studies investigating system xc− in this context. To evaluate whether system xc− is modified by early onset of diabetes, primary retinal cell culture exposed to high glucose and retinas of rats 3 weeks after streptozotocin injection were used. We observed that xCT subunit protein expression both in cultures and in vivo were diminished. Furthermore, system xc− activity and GSH levels were also decreased whereas oxidative stress was increased in retinas of diabetic animals. Therefore, this study raises the possibility that alterations in system xc− expression and activity could occur during early onset of diabetes. In that way, system xc− modifications could be related to increased ROS in diabetic retinopathy." @default.
- W2413246318 created "2016-06-24" @default.
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- W2413246318 date "2016-05-01" @default.
- W2413246318 modified "2023-10-13" @default.
- W2413246318 title "Early changes in system <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML altimg=si1.gif overflow=scroll><mml:mrow><mml:msup><mml:mrow><mml:msub><mml:mtext>x</mml:mtext><mml:mtext>c</mml:mtext></mml:msub></mml:mrow><mml:mi mathvariant=normal>−</mml:mi></mml:msup></mml:mrow></mml:math> and glutathione in the retina of diabetic rats" @default.
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- W2413246318 doi "https://doi.org/10.1016/j.exer.2015.11.027" @default.
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