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Histochem Cell Biol. 2004 Oct;122(4):333-8. Epub 2004 Jul 15.

Hyperglycemia-induced oxidative stress in diabetic complications.

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Section on Vascular Cell Biology and Complications, Joslin Diabetes Center, Boston, Massachusetts, USA.


Reactive oxygen species are increased by hyperglycemia. Hyperglycemia, which occurs during diabetes (both type 1 and type 2) and, to a lesser extent, during insulin resistance, causes oxidative stress. Free fatty acids, which may be elevated during inadequate glycemic control, may also be contributory. In this review, we will discuss the role of oxidative stress in diabetic complications. Oxidative stress may be important in diabetes, not just because of its role in the development of complications, but because persistent hyperglycemia, secondary to insulin resistance, may induce oxidative stress and contribute to beta cell destruction in type 2 diabetes. The focus of this review will be on the role of oxidative stress in the etiology of diabetic complications.

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