File Name: oxidative stress and cancer .zip
- Everything You Should Know About Oxidative Stress
- Oxidative stress and breast cancer biomarkers: the case of the cytochrome P450 2E1
- Oxidative Stress, Antioxidant and Cancer
Everything You Should Know About Oxidative Stress
Reactive oxygen species ROS can damage lipids, nucleic acids, and proteins, thereby altering their functions. When a balance between production of ROS and antioxidative defense is disturbed, state of oxidative stress occurs. Oxidative stress leads to many diseases. There are few biomarkers that are used for better understanding how oxidative stress is involved in cancer pathophysiology.
This review focuses on 8-hidroxydeoxyguanosine 8-OHdG and antioxidative enzymes as biomarkers for measurement of oxidative stress in different types of cancer. This review also deals with the product of lipid peroxidation, malondialdehyde MDA , and across a variety of cancers. To address this aim, analysis of studies of breast, prostate, lung, colon, cervical, ovarian, brain, bladder, renal, thyroid cancer, and chronic lymphocytic leukemia has been conducted. Further research is needed, with focus on correlation levels of these biomarkers and advancement of the disease.
Moreover, all studies explored the idea of those biomarkers as a useful tool in determining the levels of oxidative stress. Some of the studies proposed their potential in defining the stage of tumor progression. Advanced Search. Pisoschi AM, Pop A. The role of antioxidants in the chemistry of oxidative stress: A review. Eur J Med Chem ; Antioxidant status in advanced cervical cancer patients undergoing neoadjuvant chemoradiation.
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J Biol Chem ;
Oxidative stress and breast cancer biomarkers: the case of the cytochrome P450 2E1
Reactive oxygen species ROS can damage lipids, nucleic acids, and proteins, thereby altering their functions. When a balance between production of ROS and antioxidative defense is disturbed, state of oxidative stress occurs. Oxidative stress leads to many diseases. There are few biomarkers that are used for better understanding how oxidative stress is involved in cancer pathophysiology. This review focuses on 8-hidroxydeoxyguanosine 8-OHdG and antioxidative enzymes as biomarkers for measurement of oxidative stress in different types of cancer. This review also deals with the product of lipid peroxidation, malondialdehyde MDA , and across a variety of cancers.
The generation of reactive oxygen species ROS and an altered redox status are common biochemical aspects in cancer cells. ROS can react with the polyunsaturated fatty acids of lipid membranes and induce lipid peroxidation. The end products of lipid peroxidation, 4-hydroxynonenal HNE , have been considered to be a second messenger of oxidative stress. Indeed, in tumors in advanced stages, a further increase of oxidative stress, such as that occurs when using several anticancer drugs and radiation therapy, can overcome the antioxidant defenses of cancer cells and drive them to apoptosis. High concentrations of HNE can also induce apoptosis in cancer cells.
Correspondence Address: Dr. E-mail: cdemonacos manchester. Demonacos joined the University of Manchester, Manchester Pharmacy School in where he is involved in the investigation of the role of ROS in cellular energy metabolism and breast carcinogenesis. In addition, Dr. Demonacos' laboratory explores the signaling events that facilitate cancer cells to evade immunosurveillance.
Oxidative Stress, Antioxidant and Cancer
Oxidative stress is an imbalance of free radicals and antioxidants in the body, which can lead to cell and tissue damage. Oxidative stress occurs naturally and plays a role in the aging process. A large body of scientific evidence suggests that long-term oxidative stress contributes to the development in a range of chronic conditions. Such conditions include cancer , diabetes , and heart disease.
Click on image for details. Obesity-induced chronic inflammation promoted by adipose tissue dysfunction is a key feature, which is thought to be an important link between obesity and cancer. Oxidative stress OS has been suggested to play an important role in carcinogenesis.
Oxidative stress is an imbalance between free radicals and antioxidants in your body. Free radicals are oxygen-containing molecules with an uneven number of electrons. The uneven number allows them to easily react with other molecules.
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