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Tag: "radicals" at biology news

Researchers develop buckyballs to fight allergy

...ucture of the buckyball enables it to bind to free radicals dramatically better than any anti-oxidant currently available, such as vitamin E. Free radicals are molecules that cause oxidative stress, which experts believe may be the basis of aging. “The ...

Maggots rid patients of MRSA

...tment, which uses ionized air to create superoxide radicals and eradicate bacteria. Professor Boulton said: "This is very exciting. We have demonstrated for the first time the potential of larval therapy to eliminate MRSA infection of diabetic foot ulcers. If confirmed in a randomized controlled trial, lar...

Putting an old drug to a new use

...etrimental as iron promotes the formation of toxic radicals leading to tissue damage. Iron overload is the consequence of one of the most common genetic disorders in Europe, hereditary hemochromatosis, which affects about one in 300 Europeans. Excess iron also accumulates after repeated blood transfusions and...

Strawberry daiquiris -- the extra-healthy cocktail?

...ders. They work by helping to mop up damaging free radicals produced naturally during a person’s normal metabolism. Those who aren’t keen on strawberry daiquiris might be relieved to know that the scientists found similar results with blackberries, meaning that a blackberry-crowned champagne cocktail migh...

Scripps Research study reveals new activation mechanism for pain sensing channel

...; KEAP1 is a sensor for oxidative damage from free radicals and upregulates expression of antioxidant enzymes. Apparently, reactive compounds can activate at least two pathways through cysteine modification as a warning against cell damage, the study concluded. "Our findings, which are the result of a suc...

Honeydew honeys are better antioxidants than nectar honeys

...ey operate by mopping up potentially damaging free radicals that are released in the body. Honey is one source of antioxidants. The composition of honey depends greatly on where honeybees collect their raw materials. There are two key types of source. First, honeybees can collect nectar from flowers, and t...

Bacterial response to oxidation studied as toxin barometer

...ress is caused by unbalanced molecules called free radicals and other oxidation-promoting molecules that damage cells and genetic material by removing electrons. Gram negative heterotrophic bacteria “spit?potassium in the presence of oxidative stress, said Nancy Love, a professor in civil and environmental...

Chemicals in brown algae may protect against skin cancer

...kin cells and neutralize the cancer-causing oxygen radicals that are produced by UV exposure." Laboratory research has shown that BAPs are strong antioxidants and may have anticancer properties. For this study, Stoner and his collaborators used a strain of hairless mice that are particularly susceptib...

Breathing easy: When it comes to oxygen, a bug's life is full of it

...oxygen, which can result in the production of free radicals which cause tissue damage, he has said. His work could have applications to insect control in agriculture. Jake Socha, Argonne National Laboratory, Chicago, and the University of Chicago will discuss “Control of internal convection in beetles usin...

Osteoarthritis may be sign of faster 'biological ageing'

...ficient repair of the damage caused by oxygen free radicals (oxidative stress). Oxygen free radicals are the unstable molecules produced as a by-product of normal bodily processes, as well as external ...

Record ozone loss during 2006 over South Pole

...g of chlorine compounds into highly ozone-reactive radicals that break ozone down into individual oxygen molecules. A single molecule of chlorine has the potential to break down thousands of molecules of ozone. The ozone hole, first recognised in 1985, typically persists until November or December, when th...

Heart smart: new drug improves blood flow

...own that oxidative stress - the appearance of free radicals in the walls of arteries - is a key mechanism underlying cardiovascular disease. "Free radicals contribute to the formation of arterial blockages. What's more, as the number of free radicals incre...

Carnegie Mellon scientists use 'green' approach to transform plastics manufacturing

...cing" agents -- vitamin C, sugars or standard free radicals -- to chemically reduce CuII to CuI. This unprecedented approach continuously reduces CuII to CuI at the same rate CuII forms while retaining the desired balance between the two states. Ultimately, this technique dramatically lowers the overall amoun...

New sunscreen ingredient to heal sunburn and help prevent skin cancer

... catalysts for the generation of more harmful free radicals that cause severe cell damage. "Many forms of c...thought to be the result of reactions between free radicals and DNA, causing mutations that can disrupt the cell cycle and potentially lead to cancer. "We wa...

Free radical cell death switch identified

...exhaust product known as free radicals. When free radicals are not destroyed by antioxidants, they create oxi... As the body ages, it produces more and more free radicals and its own antioxidants are unable to fight this process, which results in the generation of highly...

Cutting calories slightly can reduce aging damage

...age are caused by unstable molecules known as free radicals and by cellular oxidation and inflammation. "In a calorie-restricted environment, you reduce the inflammatory response and prevent cell death," Leeuwenburgh said. John O. Holloszy, a professor of medicine in the division of geriatrics and nutrition...

Diabetes research takes wing thanks to long-lived fruit fly

...ster winter: Free-wheeling molecules known as free radicals zing through materials and run roughshod over anything in their way, including vital proteins and DNA. It's a major reason why generally our bodies falter as we age ?we're literally dinged to death by free radicals. While scientists knew that JNK in...

Links between DNA damage and breast cancer studied

...occurrence of damage to stromal DNA caused by free radicals and other oxidants. NIST researchers used a high-precision chemical analysis technique (liquid chromatography/mass spectrometry with isotope dilution) to identify specific DNA lesions, while the PNRI team used a spectroscopic technique (Fourier trans...

UC Davis researchers reveal apples' protective ways

...es--behave as anti-oxidants, taking up free oxygen radicals that can damage precious DNA. The UC Davis study takes that research further by looking beyond the antioxidant effects of apple flavonoids. In the current study, Gershwin and his colleagues exposed human endothelial cells to an extract of an apple m...

Natural vitamin E tocotrienol reaches blood at protective levels

...s cells against the effects of free radicals. Free radicals are potentially damaging by-products of energy metabolism that can damage cells and are implicated in the development of cardiovascular disease and cancer. The tocopherol, or most common, form of vitamin E is known for its antioxidant properties. ...

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