Abstract
Oxidative stress is believed to contribute to the pathogenesis of many diseases including metabolic and cardiovascular diseases, cancers, and the normal process of aging. In cells, mitochondria are the primary source of reactive oxygen species (ROS) and have been considered exclusively as unwanted by-products of oxidative phosphorylation. There is now growing evidences that redox signaling can occur by mitochondrial generation of free radicals. Injurious effects of excessive ROS production in cells are well documented. These oxidants may have deleterious effects by oxidizing proteins, lipids, and DNA, leading, for example, to the initiation of apoptosis. In this review, we will focus on the apparent dual role of mitochondrial ROS production, “good” biological or “bad” pathological. These findings suggest that therapeutic intervention aimed at decreasing ROS formation in various diseases needs to be reconsidered.
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Abbreviations
- 8 oxodG:
-
8-Oxo-2′-deoxyguanosine
- CoQ:
-
Coenzyme Q
- E3:
-
Dihydrolipoamide dehydrogenase
- eNOS:
-
Endothelial nitric oxide synthase
- ETC:
-
Electron transport chain
- ETF:
-
Electron transfer protein flavoprotein
- GSH:
-
Glutathione system
- H2O2 :
-
Hydrogen peroxide
- HIF:
-
Hypoxia-inducing factor
- MCL-1:
-
Myeloid cell leukemia-1
- MFRTA:
-
Mitochondrial free radical theory of aging
- MnSOD:
-
Manganese superoxide dismutase
- NFκB:
-
Nuclear factor-kappa B
- NO:
-
Nitric oxide
- O2 :
-
Oxygen
- O2 •− :
-
Superoxide anion
- PKC:
-
Protein kinase C
- PTEN:
-
Lipid phosphatase and tumor suppressor
- QH− :
-
Semiubiquinone
- QH2:
-
Ubiquinol
- ROS:
-
Reactive oxygen species
- TNFα:
-
Tumor necrosis factor alpha
- TRXSH2:
-
Thioredoxin systems
- UCP:
-
Uncoupling proteins
- VEGF:
-
Vascular endothelial growth factor
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Duluc, L., Andriantsitohaina, R., Simard, G. (2014). Mitochondrial and Free Radical Metabolism – Biological and Pathological Implications. In: Laher, I. (eds) Systems Biology of Free Radicals and Antioxidants. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-30018-9_7
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DOI: https://doi.org/10.1007/978-3-642-30018-9_7
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