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Tag: "antioxidant" at biology news

Green tea boosts production of detox enzymes, rendering cancerous chemicals harmless

...in gallate (EGCG), a catechin known for its potent antioxidant activity, and are currently being tested against a variety of cancers in clinical trials. This study was designed to see if green tea catechin concentrate had any effect on the levels of GST enzymes in healthy individuals − research that coul...

Antioxidant overload may underlie a heritable human disease

...ive stress levels due to an abundance of a natural antioxidant known as glutathione. The mutant mouse hearts ex...h oxidized glutathione is recycled to its reduced, antioxidant formsoon got out of hand, producing excess levels of the reduced glutathione and a condition of redu...

Grapes, soy and kudzu blunt some menopausal side effects

...ecrease arterial pressure in rats, probably via an antioxidant mechanism. The published results of this study are the first to demonstrate that dietary grape seed polyphenols blunt memory loss and hypertension in an animal model. Study 2: Soy and Hypertension Previous studies from the Wyss lab indicate that ...

Native fruits bear sweet antioxidants

...s (cultivar Biloxi) a fruit renowned for its high antioxidant properties. Finding unique food ingredients and ...food industries. Studies to identify additional antioxidant compounds as well as clinical trials for testing the fruits bioactivity in vivo, are in progress. he...

JCI table of contents: August 1, 2007

... mice. Importantly, treatment of the cells with an antioxidant increased the lifespan of the red blood cells lacking Foxo3. A lack of Foxo3, and therefore high levels of oxidants, also decreased the rate of red blood cell development and led the authors to posit that it might be possible to exploit these functio...

Research shows NPD1 protects a key component of vision

...nd that NPD1 elicits a specific action rather than antioxidant activity to counteract A2E-induced cell death in RPE cells. One of these papers reports also the discovery that the daily interaction of photoreceptors and RPE cells balance against damage is maintained by NPD1. The regulation of these proteins inv...

Isoprene emission from plants -- a volatile answer to heat stress

...ene confer heat tolerance? Does isoprene act as an antioxidant due to its chemical reactivity" And more generally: Is this effect of significance under natural conditions for poplar and other isoprene-emitting species" The researchers aim to analyse the biophysical and biochemical mechanisms of heat effects on p...

New joint replacement material developed at MGH put to first clinical use

...d that oxidation could be blocked by diffusing the antioxidant vitamin E throughout the polyethylene material. Both mechanical testing and animal studies have shown that the new material resists wear as well as the first generation and is much stronger. Vitamin-E-stabilized, highly crosslinked polyethylene has...

New clue into how diet and exercise enhance longevity

...s showed higher levels of superoxide dismutase, an antioxidant enzyme that protects cells from damage by highly reactive chemicals called free radicals. Our findings put a mechanism behind what your mother told when you were growing upeat a good diet and exercise, and it will keep you healthy, said White. Diet,...

Brightly colored birds most affected by Chernobyl radiation

...ize. All four of these factors are associated with antioxidant levels, suggesting that reduced antioxidant levels may cause population declines when species are exposed to radiation. Among the brightly col...

FDA finds no strong link between tomatoes and reduced cancer risk

...etween the consumption of tomatoes or lycopene, an antioxidant that gives tomatoes their red hue, and a decreased risk of some cancers, particularly prostate cancer. In order for foods and dietary supplements to be labeled with such health claims, the FDA must review and approve these claims based on the availab...

Fat horses face health problems

...ls, oxidative stress, inflammatory biomarkers, and antioxidant mechanisms. However, the preliminary data clearly demonstrates that this research has important implications for both equine and human health. For example, the knowledge gained concerning the correlation between fortified forage and lack of exerci...

A compound from olive-pomace oil gets 80 percent slowing down of HIV spread

... or crataegolic acid is a pentacyclic terpene with antioxidant and anticancer effects found in wax from olive skin, alongside oleanolic acid. The effects of this compound in the fight against AIDS are simultaneously being studied in the UGR and in Hospital Carlos III in Madrid by a team headed by Prof. Vallejo...

Tracing Parkinson's lethal mechanism

...Cdk5 activation and downregulation of an important antioxidant enzyme, can increase oxidative load, leading ultimately to death, concluded the scientists. Taken together, our findings suggest that strategies to modulate Prx2 activity serve as beneficial targets for treatment of PD, they concluded. This is of p...

Early environmental exposure may accelerate age-related neurodegeneration

...6070 years. A subset of mice that received the antioxidant at the same time that they were exposed to paraquat exhibited reduced levels of dopamine-producing neuron death, suggesting they were protected from oxidative damage. Aging is the single major risk factor for PD, but the findings from Andersen and he...

Can a Mediterranean diet help prevent colon cancer?

...doubled the blood levels of carotenoids, which are antioxidant micronutrients from fruits and vegetables. Researchers believe changes in dietary fatty acids from the higher monounsaturated fat intake with a Mediterranean diet will decrease the levels of certain proteins in the body that are linked to the dev...

Vets seeing more horses with nutritional issues this year

...tion, hay that is not fresh can lack vitamin E, an antioxidant which is important for nerve health in a horse. Some horse owners unknowingly compensate for this deficiency by feeding their animals with nutritional supplements. Those horses that suffer from a vitamin E deficiency typically show symptoms that incl...

ASU research shows connection between testosterone, dietary antioxidants and bird coloration

...al to attract potential mates. They also act as an antioxidant in the body, which improves immune system function. Researchers in animal behavior often study what keeps sexual signals like bright colors or elaborate songs honest, or why all individuals cannot produce them ad nausea and try to get mates, said ...

Plants that produce more vitamin C may result from UCLA-Dartmouth discovery

...lants convert glucose into vitamin C, an important antioxidant in nature. "If we can find ways to enhance the a...vitamin for humans, vitamin C is also an important antioxidant for animals and plants. Humans do not have the ability to make vitamin C and get it from dietary sou...

A close-up on pancreatic disease: How do we improve the odds?

...severe GI complications. To study the effect of antioxidant supplementation on pain relief, oxidative stress and antioxidant status in CP, the team randomized patients with CP and abdominal pain to receive either placebo (n=5...

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(Date:11/23/2009)...INE, Calif. -- More than 160 participants gathered...es Keck FUTURES INITIATIVE conference. This year,s...ntists, engineers, and medical researchers to expl... surrounding the emerging field of synthetic biolo...biology at Princeton University and this year,s co...
(Date:11/23/2009)...HAMPAIGN, Ill. A new study provides "incontrovert... Toba on the island of Sumatra about 73,000 years ...iles from the epicenter, researchers report. , T...rs of ash into the atmosphere, leaving a crater (n...kilometers long and 35 kilometers wide. Ash from t...
(Date:11/23/2009)...ERMORE, Calif. - By producing some of the highest ... surfaces, scientists have a deeper understanding ...his research may lead to a new treatment for kidne...ch appears in the Nov. 23 online edition of the jo...nces , explores how peptides interact with mineral...
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