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Tag: "antioxidant" at biology news

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,” ...

A cherry on top: Tart cherries may alter heart/diabetes factors

... a positive effect from the high concentrations of antioxidant compounds called anthocyanins that are found in ta...often eaten raw, and have higher concentrations of antioxidant anthocyanins than sweet cherries. By the end of the study, the rats that received the 1-percent ...

Heavy multivitamin use may be linked to advanced prostate cancer

...iscuss the positive and negative health effects of antioxidant supplements. “Lawson [and colleagues] add to the g...ng evidence that questions the beneficial value of antioxidant vitamin pills in generally well-nourished populations and underscore the possibility that antioxidan...

No magic tomato? Study breaks link between lycopene and prostate cancer prevention

...on Cancer Research Center report that lycopene, an antioxidant predominately found in tomatoes, does not effectiv...ers noted an association between beta-carotene, an antioxidant related to lycopene, and an increased risk for aggressive prostate cancer. According to the researc...

Studies force new view on biology of flavonoids

...en thought to be nutritionally important for their antioxidant activity, actually have little or no value in that...in recent years had indicated that they had strong antioxidant activity ?and because of that, they might be important to biological function and health. "If you...

Scientists find genes involved in the battle between Hessian flies and wheat

...increased production of enzymes triggered by their antioxidant genes in order to detoxify wheat anti-insect poiso...presents a step in understanding the complexity of antioxidant defense responses during interaction between Hessian flies and wheat, he said. It may also be applic...

Grape expectations for healthier wine

...doi 10.1002/jsfa.2780). It is not yet known why antioxidant levels increase, but because these compounds are up-regulated in response to environmental stress in plant cells, it could be that the ozone is perceived as a biochemical insult. Andrew Waterhouse, Chair of the Department of Viticulture at Univers...

Strawberry daiquiris -- the extra-healthy cocktail?

...ing the berries with alcohol led to an increase in antioxidant capacity and free radical scavenging activity with...measured by several different laboratory tests for antioxidant activity (SCI’s Journal of the Science of Food and Agriculture, doi 10.1002/jsfa.2841). Coloured ...

NIH announces phase III clinical trial of creatine for Parkinson's disease

...roduce energy inside cells. It also may act as an antioxidant that prevents damage from compounds that are harmful to cells in the brain. In a mouse model of PD, creatine is able to prevent loss of the cells that are typically affected. "Creatine, or any compound that may slow the progression of PD, could h...

Scripps Research study reveals new activation mechanism for pain sensing channel

...e 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 successful collaboration with the Ben Cravatt...

Organic is healthier: Kiwis prove that green is good

...d coloured berries. They also had a higher overall antioxidant activity, as well as higher levels of ascorbic aci...h could help the fruits resist insects, and higher antioxidant activity which is thought to be a natural by-product of stress. However, some people are still u...

Honeydew honeys are better antioxidants than nectar honeys

...generated by bees feeding on honeydew have greater antioxidant properties than those produced by bees feeding on ...e of physical and chemical tests. Honeys with high antioxidant properties (measured by the DPPH test) also had high total polyphenol content, net absorbance (as co...

Unique tomatoes tops in disease-fighting antioxidants

...entists are working on ways to enhance the fruit's antioxidant content and composition," Schwartz continued. The findings appear in a recent issue of the Journal of Agricultural and Food Chemistry. Lycopene is a carotenoid that contains a variety of related compounds called isomers. Isomers share the same...

Researchers seek to design first treatment for neuroAIDS

...s, with several now in human trials. These include antioxidant medications, calcium channel antagonists, NMDA antagonists like the Alzheimer's drug Memantine, platelet activating factor (PAF) inhibitors, and in the case of the new grant, drugs that inhibit glycogen synthase kinase 3 beta (GSK-3b) and mixed linea...

Edible coatings will be the packaging of the future

... the experiment was used to incorporate nisine, an antioxidant agent that penetrates the foodstuff little by little and thus offers an ongoing protection. The idea was to extend the conservation time for a chicken breast would go from the current 7 days to 15, but the results were negative. However, a very inter...

Antioxidant protects against lung damage in silicosis

Levels of heme oxygenase-1 (HO-1), an antioxidant that protects against reactive oxygen species (damaging oxygen molecules that cause direct tissue injury), become elevated in the lungs of chronic silicosis patients and could represent a new treatment approach for the disease. These results appear ...

Herbal medicine silymarin may help sugar-control in people with type II diabetes

...tle, Silybum marianum (silymarin) is known to have antioxidant properties and research published this week in Phytotherapy Research shows that this extract can help people significantly lower the amount of sugar bound to haemoglobin in blood, as well as reducing fasting blood sugar levels. Silymarin contains ...

Study shows pine bark naturally decreases severe chronic venous insufficiency

...upplementing with Pycnogenol® (pic-noj-en-all), an antioxidant plant extract from the bark of the French maritime pine tree. Over 35 years of research on Pycnogenol® demonstrate the antioxidant's ability to improve blood flow and strengthen venous walls. Published results from this study showed Pycnogenol® to ...

UC Davis researchers reveal apples' protective ways

... 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 mash made from different apple varieties. The researchers then challenged these cells by exposing them to tumor ...

Natural vitamin E tocotrienol reaches blood at protective levels

...or most common, form of vitamin E is known for its antioxidant properties. In previous studies, the scientists...on of TCT was needed: Tocotrienol does not exhibit antioxidant properties until it reaches a concentration 10 to 25 times stronger than the concentration that prev...

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