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Reactive oxygen species (ROS) induced damage to DNA plays a major role in carcinogenesis. In order to estimate the level of oxidative damage and its role in breast cancer, 8-hydroxy-2'-deoxyguanosine (8-OHdG) was determined in DNA isolated from human breast tissue. Furthermore, we investigated whether polymorphisms in genes for enzymes involved in generation and elimination of ROS had any association...
There is increasing evidence that catecholestrogens may contribute to the development of breast cancer. Specifically, inactivation of catecholestrogens may prevent the genesis and arrest the progression of the disease. Catechol-O-methyltransferase (COMT), Glutathione S-transferase (GST) M1 and GSTP1 are responsible for the detoxification of catecholestrogens, and are polymorphic in the human population...
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