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Tag: "points" at biology news

BMI not accurate indicator of body fat

... an athlete or a 75-year-old man, all the same cut points are used." "BMI should be used cautiously when classifying fatness, especially among college-age people," said Jim Pivarnik, an MSU professor of kinesiology and epidemiology. "It really doesn't do a good job of saying how fat a person really is." ...

Study suggests some drug resistance to influenza B medications

...ernative mechanisms of action and target different points in the viral life cycle. The emergence of drug-resistant influenza B should draw attention to the importance of continual monitoring of strains over time and to the need for frequent rethinking of policies for use of antiviral drugs. While the news a...

Vitamins: Science doesn't always match policy

...vitamins," says Rosenberg. Furthermore, Rosenberg points to research indicating that people who use multivitamins usually have better diets and participate in more physical activity. "Since multivitamin-users are generally healthier, it might not be feasible to attribute health outcomes to vitamin use unti...

Arsenic in chicken feed may pose health risks to humans, C&EN reports

.... are fed a diet containing roxarsone, the article points out. Complicating the issue is the fact that no one knows the exact amount of arsenic found in chicken meat or ingested by consumers who frequently eat chicken. “Neither the Food and Drug Administration nor the Department of Agriculture has actua...

MIT model helps researchers 'see' brain development

... Charting each baby's brain requires about 130,000 points per hemisphere. Yu decomposed these points into a representation using just 42 points that shows only the coarsest folds. By adding more points...

LIAI completes world's most comprehensive analysis on influenza virus data

... respond to influenza, Wilson said two significant points emerged. "One concern is that most of the current influenza research is based on strains maintained in the lab, rather than wild influenza strains. Since we know the virus mutates, research needs to be done using influenza strains currently circula...

Enhancing activity of marijuana-like chemicals in brain helps treat

... a condition similar to Parkinson's. "This study points to a potentially new kind of therapy for Parkinson's disease," said senior author Robert Malenka, MD, PhD, the Nancy Friend Pritzker Professor in Psychiatry and Behavioral Sciences. "Of course, it is a long, long way to go before this will be tes...

Bacterial walls come tumbling down

... now have the details of its shape and key contact points between enzyme and antibiotic. The enzyme structure is the first ever solved of a member of a family of enzymes that remove sugars from lipids and attach them to other sugars. This process is used in a wide range of biochemical reactions, includin...

Chlamydia vaccine a step closer to reality

...as selected QUT to help develop Chlamydia vaccines points to the value of the work being done here," he said. "Despite this current injection of funds, further work and funding is still needed to take this current research through to a vaccine product." QUT researchers working on the project are par...

Gene elevating breast cancer risk also causes prostate cancer

...amilial breast cancer," says Winqvist. Winqvist points out that, in spite of recent advances, known factors can only explain a fraction of heritable susceptibility to breast cancer. He is nonetheless disposed to believe that the evaluation of yet other biologically significant factors will in time improv...

Genetic pathways to curable and incurable forms of pancreatic cancer identified

...ind their distinct behavior and hopefully identify points of vulnerability in the more fatal form to improve survival," Hingorani said. ...

New protein inhibitor impedes growth of cancerous cells

...unction to be experimentally disrupted at specific points during the cell-division cycle, thereby revealing the normal roles of Plk1 in new detail, and potentially identifying specific cellular processes that might be targeted by future anti-cancer therapeutics. ...

Why doesn't the immune system attack the small intestine?

...l-cell antigens to the immune system. "Our study points to a previously unknown mechanism of immune system tolerance," Turley explains. "When you think of the conditions in the small intestine, with so many millions of bacteria cells and so much opportunity for dendritic cells to stimulate an immune attac...

20-year study shows significant rise in childhood obesity, especially among girls

...-olds and the lack of major change in 16-year-olds points to a recent change in the children's environment and lifestyles. We should point out, however, that the weight data was missing from a greater percentage of the 16 year-olds' records in 2002 and this could be because some of the more overweight teena...

Gene that makes people 'early to bed and early to rise' demystified

...earchers added, "PER2 levels are lower at all time points and, in the latter half of a cycle, fall below the threshold earlier than normal, leading to activation of transcription earlier and resulting in a shorter period." The advance in understanding of PER2's role may ultimately lead to methods for peop...

Researchers from the UGR use a bacterium to obtain biopreservatives from food

...e acquired by bacteria. Researcher Sánchez Hidalgo points out that natural antimicrobial cationic peptides such as bacteriocins "represent a good alternative." Bacteriocins are proteins that are biologically active against members of the same species or species closely related to the producing bacterium....

Breakthrough in understanding type-2 diabetes as key genes identified

...etes. The researchers identified four loci, or points on individuals' genetic maps, which corresponded to a risk of developing the disorder. The scientists, from Imperial College London, McGill University, Canada, and other international institutions, believe their findings explain up to 70% of the gene...

Natural gut hormone offers hope for new obesity drug

... polypeptide may be the answer." Professor Bloom points to research showing that people with benign PP-secreting tumours have elevated levels of the hormone and yet appear to show no adverse side-effects. "These people may have had high levels of PP for ten or fifteen years without showing side effects,...

Twin studies reveal genetic components leading to cardiac and kidney disease

...ilters are caused by genetic variation at multiple points along the adrenergic pathway. Links between adrenergic activity and renal injury could lead to novel approaches to predicting, preventing, diagnosing and treating kidney disease. These findings are published in the May 1, 2007 issue of Hypertension....

Antarctic warming to reduce animals at base of ecosystem, shift some penguin populations southward

...by a couple of meters compared to today. Lyons points to the fact that all the global climate models predict a warming in the Antarctic and a decrease in sea ice along its margins. "Those two things will have great impacts on both the glacial dynamics of the continent but also on the fragile marine ...

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