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Latest Reactive oxygen species Stories

2009-06-03 14:41:45

When you were a kid your mom poured it on your scraped finger to stave off infection. When you got older you might have even used it to bleach your hair. Now there's another possible function for this over-the-counter colorless liquid: your body might be using hydrogen peroxide as an envoy that marshals troops of healing cells to wounded tissue.Using the zebrafish as an animal model, researchers in the lab of Harvard Medical School professor of systems biology Timothy Mitchison and Dana...

2009-05-29 08:05:14

Oxidative stress has been linked to aging, cancer and other diseases in humans. Paradoxically, researchers have suggested that small exposure to oxidative conditions may actually offer protection from acute doses. Now, scientists at the University of California, San Diego, have discovered the gene responsible for this effect. Their study, published in PLoS Genetics on May 29, explains the underlying mechanism of the process that prevents cellular damage by reactive oxygen species (ROS)."We...

2009-05-06 08:49:10

By lending them a gene normally reserved for other classes of animals, researchers have shown they can rescue flies from their Parkinson's-like symptoms, including movement defects and excess free radicals produced in power-generating cellular components called mitochondria. The gene swap also protects healthy flies' mitochondria, and to a large extent the flies themselves, from the damaging effects of cyanide and other toxins, the team reports in the May issue of Cell Metabolism, a Cell...

2009-04-28 13:16:14

U.S. scientists say they've determined immune cells don't kill bacteria by damaging their DNA, reversing a widespread assumption in the scientific community. The University of Illinois researchers said they discovered macrophages -- the immune cells that engulf and kill bacteria -- direct their attack on targets outside the bacteria's membrane-bound cytoplasm. University of Illinois Graduate student Maureen Craig and Professor James Slauch said they discovered macrophages kill bacteria with...

2009-04-28 11:23:10

 For decades, microbiologists assumed that macrophages, immune cells that can engulf and poison bacteria and other pathogens, killed microbes by damaging their DNA. A new study from the University of Illinois disproves that.The study, published in the journal PLoS ONE, shows that macrophages focus their most potent poisons, known as reactive oxygen species (ROS), on targets outside the cytoplasm.Macrophages are voracious eaters that "swallow" cellular debris and invading organisms. They...

2009-03-17 08:00:00

Breakthrough Comes as Scientific Community Intensifies Anti-Aging Research DETROIT, March 17 /PRNewswire-USNewswire/ -- EXT Life Sciences, Inc., a biotechnology start-up company spun off from Wayne State University that develops proprietary, targeted antioxidant treatments to slow the aging process, announces the development of a treatment that stops hair from graying as it ages. EXT's new treatment is the only targeted antioxidant of its kind. EXT is located in the WSU tech park known as...

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2009-01-23 09:46:01

Brown University researchers have identified a cellular mechanism that could someday help fight the aging process. The finding by Stephen Helfand and Nicola Neretti and others adds another piece to the puzzle that Helfand, a professor of biology, molecular biology, cell biology and biochemistry, first discovered in 2000. Back then, he identified a mutation in the Indy ("I'm Not Dead Yet") gene that can extend the life span of fruit flies. Subsequent studies of the Indy flies have led to the...

2008-09-28 03:00:14

By Shelley, Suzanne ENVIRONMENTAL Tetra-amido macrocyclic ligands (TAMLs) are environmentally friendly catalysts with a host of pollution- reduction and clean-up applications, and are a prime example of green chemistry. Terry Collins, professor of chemistry and director of the Center for Green Science at Carnegie Mellon Univ., created the catalysts and now believes that small-molecule catalysts have the potential to be even more effective than previously proven. The oxidation catalysts...

2008-08-22 09:01:11

Synta Pharmaceuticals Corp., (NASDAQ: SNTA) today announced the publication of new findings in the American Association for Cancer Research journal, Molecular Cancer Therapeutics that describe the novel mechanism of action of elesclomol: driving programmed cell death (apoptosis) in cancer cells through the selective induction of oxidative stress. Elesclomol is currently in a global, pivotal Phase 3 clinical trial (SYMMETRY(SM)) in combination with paclitaxel for the treatment of metastatic...

2008-08-17 18:00:39

By Dan, Yinghui Abstract Browning and necrosis of transformed cells/ tissues, and difficulty to regenerate transgenic plants from the transformed cells/tissues (recalcitrance) are common in Agrobacterium-mediated transformation process in many plant species. In addition, most crop transformation methods that use NPTII selection produce a significant number of nontransgenic shoots, called "shoot escapes" even under stringent selection conditions. These common problems of plant...


Word of the Day
glogg
  • Scandinavian punch made of claret and aquavit with spices and raisins and orange peel and sugar.
This word comes from the Swedish 'glogg,' which is an alteration of 'glodgat,' mulled (wine).
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