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Glucose and reactive oxygen species
Dominique Bonnefont-Rousselot1
1Laboratoire de Biochimie Métabolique et Clinique, Faculté de Pharmacie; and Laboratoire de Biochimie B, Hôpital de la Salpêtrière, Paris, France. dominique.rousselot@pls.ap-hop-paris.fr
Current Opinion in Clinical Nutrition and Metabolic Care
|August 13, 2002
Summary
High glucose in diabetes increases oxygen free radicals, leading to oxidative stress and complications. New antioxidant therapies targeting these mechanisms are being explored for diabetes treatment.
Area of Science:
- Biochemistry
- Endocrinology
- Pathophysiology
Background:
- Diabetes mellitus is a metabolic disorder characterized by hyperglycemia.
- Hyperglycemia triggers increased production of reactive oxygen species (ROS).
- ROS play a significant role in the pathogenesis and complications of diabetes.
Purpose of the Study:
- To review novel concepts of glucose-induced cellular damage in diabetes.
- To elucidate the role of increased oxygen free radical production in diabetes.
- To discuss emerging therapeutic strategies targeting oxidative stress in diabetes.
Main Methods:
- Literature review of studies on glucose metabolism and oxidative stress.
- Analysis of mechanisms linking hyperglycemia to ROS production.
- Synthesis of findings on the role of ROS in diabetes complications.
Main Results:
- Hyperglycemia induces ROS via multiple pathways including glucose autoxidation, polyol pathway, NADPH oxidase, and AGEs.
- Oxidative stress resulting from ROS imbalance is implicated in diabetes pathogenesis.
- ROS contribute to vascular dysfunction, impaired vasorelaxation, platelet dysfunction, and altered glucose transport.
Conclusions:
- Increased ROS production is a key mechanism of glucose-induced damage in diabetes.
- Oxidative stress contributes significantly to diabetes complications like atherosclerosis.
- Future therapeutic strategies may focus on antioxidants and targeting ROS-regulated pathways.