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Etiopathogenesis of systemic sclerosis is not well-known and oxidative stress has been supposed to play a role in the endothelial damage at the initial phase of the disease. In systemic sclerosis and Raynaud phenomenon, decrease in antioxidant potential and increase in the free radicals were detected in circulation. It is necessary to show production of excess amounts of free radicals or deficiency of antioxidants to detect oxidative stress. In patients with systemic sclerosis, the etiology of decrease in the antioxidant enzymes is unknown. Changes in the intermediate metabolism of antioxidants or consumption of antioxidants caused by hypoxia which is induced by Raynaud phenomenon may be the cause. Ischemia itself, especially if it is together with hypoxia may cause tissue damage. Endothelial cell dysfunction occurs especially at early stages of the disease.
Other ID | JA82TT68CN |
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Journal Section | Research Article |
Authors | |
Publication Date | December 1, 2012 |
Published in Issue | Year 2012 Volume: 13 Issue: 3 |