Increased oxidative DNA damage and impaired antioxidant defense system in patients with gastrointestinal cancer
European Journal of Internal Medicine , 05/10/2012Gönenc A et al.
The results demonstrate that the oxidant/antioxidant balance was altered in favor of free radicals and DNA damage in gastrointestinal cancer patients. Significant increases in 8–hydroxy–deoxyguanosine, glutathione and decreases in nitrite+nitrate, SOD, CAT activities and antioxidant molecules suggest the possible involvement of oxidative stress in gastrointestinal cancer. Glutathione peroxidase activities in postoperative patients were higher compared to inoperative patients.
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