PURPOSE: This study examines the levels of oxidative damage in patients with cataract. METHODS: Blood samples were collected from 60 patients with cataract and 60 age- and gender-matched healthy individuals to measure 8-hydroxy 2-deoxyguanosine (8-OHdG) and malondialdehyde (MDA) levels. RESULTS: A significant difference was observed in leukocyte 8-OHdG levels in patients with cataract in comparison with healthy persons (p < 0.001). Similarly, a significant difference was observed in plasma MDA levels in patients with cataract in comparison with healthy persons (p<0.001). In addition, a significant correlation was found between levels of 8-OHdG in leukocyte DNA and plasma MDA (r = 0.859, p < 0.001). CONCLUSION: This study measured the oxidative DNA damage by measuring the 8-OHdG in the leukocyte DNA in patients with cataract. In addition, the level of MDA - a marker for lipid peroxidation - was measured to determine lipid peroxidation.
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Ateş et al. (2009) studied this question.
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