reactive oxygen species


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reactive oxygen species,

n molecules and ions of oxygen that have an unpaired electron, thus rendering them extremely reactive. Many cellular structures are susceptible to attack by ROS contributing to cancer, heart disease, and cerebrovascular disease.
References in periodicals archive ?
Nicotine- and tar-free cigarette smoke induces cell damage through reactive oxygen species newly generated by PKC-dependent activation ofNADPH oxidase," Journal of Pharmacological Sciences, vol.
Next, the team sprinkled in another chemical, called thiourea, which can quell rebellious reactive oxygen species.
The research team -- from the University of Hull's Department of Chemistry -- placed one kind of photosensitiser inside each nanoparticle and another on the outside, which meant that far more reactive oxygen species could be created from the same amount of light.
This "strongly suggests" depression involves suppression of a major buffer to reactive oxygen species, Dr.
The SOD2 gene produces a protein that protects cells from damage caused by reactive oxygen species.
Oxidative stress is a result of the imbalance between reactive oxygen species (ROS) and antioxidants in the body.
While environmental toxin exposure, increased generation of reactive oxygen species, and inhibition of mitochondrial electron transport is the current hypothesis, the mechanisms of dopamine neuron degeneration and increase in the production of reactive oxygen species in Parkinson's disease is unknown.
Key words: catalase, peroxidase, superoxide dismutase, Eichhornia crassipes, heavy metals, Pistia stratiotes, reactive oxygen species.
These reactive oxygen species may impair the endothelium-dependent activation of protein C, thus predisposing a patient to thrombosis.
Our data indicates that vascular reactive oxygen species are release from cells during hypoxia.

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