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Latest Superoxide Stories

2009-05-05 08:02:43

Obstructive sleep apnea, or periodic interruptions in breathing throughout the night, thickens sufferers' blood vessels.  Moreover, it increases the risk of several forms of heart and vascular disease. Emory researchers have identified the enzyme NADPH oxidase as important for the effects obstructive sleep apnea has on blood vessels in the lung. The results are published in the May 1 issue of the American Journal of Respiratory Cell and Molecular Biology. C. Michael Hart, professor of...

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...

2009-03-09 06:00:00

Nu Skin Presents Findings at Asian Societies of Cosmetic Scientists Meeting PROVO, Utah, March 9 /PRNewswire-FirstCall/ -- Additional research on a newly identified internal free radical generator, age-related NOX (arNOX), by scientists working with Nu Skin Enterprises, Inc. (NYSE: NUS) links the enzyme to age-related skin damage, such as decreased elasticity and discoloration. The research was presented at the 9th Scientific Conference of the Asian Societies of Cosmetic Scientists (ASCS),...

2007-02-02 18:00:52

By Corbin, Joseph F III; Teel, Amy L; Allen-King, Richelle M; Watts, Richard J ABSTRACT: The enhanced treatment of sorbed contaminants has been documented in modified Fenton's reactions; contaminants are desorbed and degraded more rapidly than they desorb by fill-and-draw or gas- purge desorption. The reactive species responsible for this process was investigated using dodecane as a model sorbent. Hydroxyl radical, hydroperoxide anion, and superoxide radical anion were generated...

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2006-02-23 12:45:00

One day, humans will step foot on Mars. And they'll be hungry. Growing food on a frozen desert planet with a suffocatingly thin atmosphere, however, will be a challenge. Scientists are now bioengineering plants that can grow on mars. NASA -- Plants and animals are fragile life forms. Dry them out, freeze them, expose them to high doses of radiation - they don't do so well. But not all organisms are so picky. Many archaeans, for example, are distinguished by their ability to adapt to a...

2005-11-03 15:23:23

Bethesda, MD - Scientists recently discovered an anti-aging hormone called Klotho. Now, a new study shows that this protein acts by increasing the cell's ability to detoxify harmful reactive oxygen species. The research appears as the "Paper of the Week" in the November 11 issue of the Journal of Biological Chemistry, an American Society for Biochemistry and Molecular Biology journal. The klotho gene, named after the Greek goddess who spins life's thread, is associated with preventing aging...

2004-11-27 03:00:10

EXPANDED ABSTRACT KEY WORDS: * superoxide dismutase * reactive oxygen species Manganese superoxide dismutase (MnSOD)3 is a nuclear-encoded antioxidant enzyme that localizes to the mitochondria (1). Increased expression of MnSOD suppresses cancer phenotypes in a large number of human and murine tumors (2). MnSOD can also regulate tumor formation in MnSOD-overexpressing and MnSOD-deficient mice by modulating apoptotic and proliferation pathways in situ (3,4). The presence of MnSOD in...


Word of the Day
snash
  • To talk saucily.
  • Insolent, opprobrious language; impertinent abuse.
This word is Scots in origin and probably imitative.