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Link Between High Glucose Levels and Diabetes Complications Explored

by Kathy Jones on October 26, 2013 at 11:17 PM
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 Link Between High Glucose Levels and Diabetes Complications Explored

The way in which high glucose levels drive diabetes-associated complications, including retinopathy, neuropathy, and nephropathy, is not well-understood.

There is evidence that cultured cells exposed to high levels of glucose produce reactive oxygen species (ROS); however it is unknown if ROS contributes directly to diabetes complications. In this issue of the Journal of Clinical Investigation, Kumar Sharma and colleagues at the University of California, San Diego determined that ROS production was actually reduced in kidneys of diabetic mice, and this decrease was associated with lowered activity of the major energy-sensing enzyme, AMPK. Furthermore, AMPK activity was also reduced in kidneys of diabetic patients. Treatment of diabetic mice with a compound that increased AMPK activity reduced kidney-associated symptoms, including fibrosis and albuminuria. In the companion commentary, Dwight Towler of the Sanford-Burnham Medical Institute discusses how this view of ROS in diabetes will require a new look at therapeutic approaches for relieving diabetes complications.

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Source: Eurekalert

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