【摘 要】
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Hyperglycemic memory occurs in diabetic cardiovascular complications, but the underlying mechanism remains to be elucidated. Although the depletion of SET8 lead
【机 构】
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Department of Anaesthesiology, Fudan University Shanghai Cancer Centre, Department of Oncology, Shan
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Hyperglycemic memory occurs in diabetic cardiovascular complications, but the underlying mechanism remains to be elucidated. Although the depletion of SET8 leads to increased mitochondrial oxidative stress via increasing cellular reactive oxygen species (ROS) production, the role of SET8 in hyperglycemic memory-induced mitochondrial dysfunction is not well understood. Here, we investigated the role of SET8 in this setting. Our results showed that high glucose-induced vascular inflammation, ROS production and apoptosis remained at high levels even when glucose retued to normal level. Elevated glucose reduced SET8 expression, which also remained at low level after retuing to normoglycemia. SET8 overexpression protected cells from elevated glucose and hyperglycemic memory-induced endothelial injury by blocking ROS accumulation, attenuating vascular inflammation, and restoring nitric oxide production. Thus, our results suggest that SET8 may be a key mediator in hyperglycemic memory.
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