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Cell Damage Oxidative Stress
Oxidative stress represents an imbalance between the systemic manifestation of reactive oxygen species and a biological system's ability to readily detoxify the reactive intermediates or to repair the resulting damage. Disturbances in the normal redox state of cells can cause toxic effects through the production of peroxides and free radicals that damage all components of the cell, including proteins, lipids, and DNA. Further, some reactive oxidative species act as cellular messengers in redox signaling. Thus, oxidative stress can cause disruptions in normal mechanisms of cellular signaling.
In humans, oxidative stress is thought to be involved in the development of many diseases or may exacerbate their symptoms. These include cancer, Parkinson's disease, Alzheimer's disease, atherosclerosis, heart failure, myocardial infarction, Schizophrenia; Bipolar disorder, fragile X syndrome, Sickle Cell Disease,and chronic fatigue syndrome. However, reactive oxygen species can be beneficial, as they are used by the immune system as a way to attack and kill pathogens. Short-term oxidative stress may also be important in prevention of aging by induction of a process named mitohormesis.
FREE REVIEW ARTICLES
- Oxidative stress and condition-dependent sexual signals: more than just seeing red, Michael Garratt and Robert C. Brooks. Oxidative stress and condition-dependent sexual signals: more than just seeing red. Proc R Soc B, 2012; 279: 3121 - 3130.
- Oxidative stress and redox signaling mechanisms of inflammatory bowel disease: updated experimental and clinical evidence, Hong Zhu and Y Robert Li. Oxidative stress and redox signaling mechanisms of inflammatory bowel disease: updated experimental and clinical evidence. Exp Biol Med, 2012; 237: 474 - 480.
- Oxidative Stress-Mediated Regulation of Proteasome Complexes, Charity T. Aiken, Robyn M. Kaake, et al. Oxidative Stress-Mediated Regulation of Proteasome Complexes. Mol. Cell. Proteomics, 2011; 10: R110.006924.
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