期刊
JOURNAL OF INTERNATIONAL MEDICAL RESEARCH
卷 42, 期 3, 页码 799-805出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0300060513516294
关键词
Vitiligo; narrowband UVB phototherapy; oxidative stress; erythrocyte malonyldialdehyde; erythrocyte glutathione peroxidase activity; GSH-Px; erythrocyte superoxide dismutase
Objectives: To evaluate the role of oxidative stress in the pathogenesis of vitiligo and the effect of narrowband (NB) ultraviolet (UV) B phototherapy on oxidative stress markers. Methods: Patients with vitiligo and healthy control subjects were included in the study. Patients in the vitiligo group were treated with an NB-UVB regimen (3 x weekly for 6 months). Erythrocyte superoxide dismutase activity (SOD), erythrocyte malonyldialdehyde (MDA) and erythrocyte glutathione peroxidase activity (GSH-Px) levels were assessed in all participants at baseline, and after NB-UVB phototherapy in patients with vitiligo. Results: A total of 24 patients with vitiligo and 27 control subjects were included in the study. Before treatment, erythrocyte MDA levels were significantly higher, and SOD and GSH-Px levels were significantly lower, in patients with vitiligo compared with controls. NB-UVB phototherapy was associated with a significant reduction in MDA levels and a significant increase in GSH-Px levels, compared with baseline, in patients with vitiligo. Conclusion: NB-UVB phototherapy may relieve oxidative stress in patients with vitiligo by reversing the oxidant-antioxidant imbalance that is considered to play a role in the pathogenesis of this disease.
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