Journal
ACTA ONCOLOGICA
Volume 48, Issue 7, Pages 1054-1061Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02841860902824909
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Background. Cigarette smoke is strongly associated with NSCLC, but the carcinogenesis of NSCLC is poorly understood. Methods. To discover the role of oxidative stress and anti-oxidative defense in NSCLC, we measured NADPH oxidase (NOX) activity, myeloperoxidase activity, 8-OHdG, and glutathione content from lung specimens. These came from 32 patients: 22 NSCLC patients and ten controls without cancer. Results. In NSCLC patients, NOX activity was significantly higher both in the malignant (p = 0.001) and non-malignant (p = 0.044) samples from NSCLC patients, than in the control specimens. Myeloperoxidase activity was lower (p = 0.001) and glutathione content (p = 0.009) higher in malignant tissue. No significant difference was observable in 8-OHdG content between patient groups. Conclusions. Increase in NOX activity in the malignant tissues was independent of smoking history and myeloperoxidase activity, suggesting its independent role in NSCLC pathogenesis.
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