Quantcast
Last updated on April 23, 2014 at 1:22 EDT

Latest Reactive oxygen species Stories

2009-12-02 19:14:35

Memory and learning improved in mice with Alzheimer's disease that were crossbred with animals that produced large amounts of a potent antioxidant enzyme made in the mitochondria said researchers from Baylor College of Medicine and New York University in a report that appeared in the Proceedings of the National Academy of Sciences. "This is one of the first reports with so many improvements in cognition in these mice," said Dr. Robia Pautler, assistant professor in the departments of...

2009-11-10 18:39:59

Age-related hearing loss is the most common sensory disorder among the elderly. But scientists are still trying to figure out what cellular processes govern or contribute to the loss. Now a University of Florida team and researchers from University of Wisconsin and three other institutions have identified a protein that is central to processes that cause oxidative damage to cells and lead to age-related hearing loss. The findings help point the way toward a new target for antioxidant...

2009-11-06 13:30:16

Researchers at the Virginia Bioinformatics Institute (VBI) at Virginia Tech and Montana State University have discovered a fungal protein that plays a key role in causing disease in plants and animals and which also shields the pathogen from oxidative stress. The researchers have found that the fungal protein TmpL is critical for the infection of host tissue and helps these pathogens regulate oxidative stress responses that are caused by the presence of destructive reactive oxygen species, a...

2009-11-04 08:30:44

If a circadian rhythm is like an orchestra - the united expression of the rhythms of millions of cells - a common chemical may serve as the conductor, or at least as the baton. The chemical is hydrogen peroxide (H2O2), the active ingredient in color safe bleach. Produced in all animal cells, hydrogen peroxide may act as a signal for the active and resting phases of living things, new research by USC biologists suggests. A study published in the journal PLoS ONE shows that hydrogen peroxide...

2009-10-07 15:22:52

An international team of scientists, led by Monash University researchers, has found that anti-oxidants commonly touted for their health-promoting benefits, could contribute to the early onset of Type 2 diabetes. The team, led by Professor Tony Tiganis from the Monash Department of Biochemistry and Molecular Biology, has found that molecules known as Reactive Oxygen Species (ROS) may play a protective role in the early stages of Type 2 diabetes by enhancing insulin action. Anti-oxidants...

2009-10-06 15:06:59

We've all heard about the damage that reactive oxygen species (ROS) "“ aka free radicals "“ can do to our bodies and the sales pitches for antioxidant vitamins, skin creams or "superfoods" that can stop them. In fact, there is considerable scientific evidence that chronic ROS production within cells can contribute to human diseases, including insulin resistance and type 2 diabetes. But a new report in the October 7th Cell Metabolism, a Cell Press publication, adds to evidence that...

2009-09-24 08:02:14

For years, health conscious people have been taking antioxidants to reduce the levels of reactive oxygen in their blood and prevent the DNA damage done by free radicals, which are the result of oxidative stress. But could excessive use of antioxidants deplete our immune systems? Research at UCLA's Jonsson Comprehensive Cancer Center has raised that question. It has been known for decades that reactive oxygen species (ROS) - ions or very small molecules that include free radicals - damage...

2009-09-22 13:51:47

Research published in the journal Genetics suggests new ways to stop byproducts from the air we breathe from harming our muscles If you think the air outside is polluted, a new research report in the September 2009 issue of the journal Genetics (http://www.genetics.org) might make you to think twice about the air inside our bodies too. That's because researchers show how about 3 percent of the air we breathe gets converted into harmful superoxides, which ultimately harm our muscles....

2009-09-21 12:31:18

Scientists at the Burnham Institute for Medical Research in California say they've discovered reactive oxygen plays a key role in cancer metastasis. The researchers, led by Professor Sara Courtneidge, said they determined reactive species, such as superoxide and hydrogen peroxide, help form invadopodia -- cellular protrusions implicated in cancer cell migration. They found inhibiting reactive oxygen reduces invadopodia formation, thereby limiting cancer cell invasion. Reactive oxygen has a...

2009-09-13 07:55:14

The growth of cancerous tumors is fueled, at least in part, by the buildup of free radicals"”highly reactive oxygen-containing molecules. It stands to reason, then, that cancer should respond to treatment with antioxidants, which inhibit the rogue radicals, or with pro-oxidants, which go the opposite direction, increasing "oxidative stress" on cancer cells to the point of vanquishing them. But experiments with such treatments have had mixed results, possibly because patients differ in...